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1
Shi, Hongyan, Xiaoke Lin, and Yun Wang. "Characterization of drill bit breakage in PCB drilling process based on high-speed video analysis." Circuit World 43, no. 3 (2017): 89–96. http://dx.doi.org/10.1108/cw-12-2016-0066.
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Purpose The purposes of this paper are to study the characterization of drill bit breakage in printed circuit board (PCB) drilling process based on high-speed video analysis and to provide an important reference for micro drill bit breakage prediction. Design/methodology/approach Based on PCB drilling experiment, the high-speed camera was used to observe the micro drill breakage process and the chip removal process. The variation of chip in the drilling process was studied and one of the key reasons for the drill bit breakage was analysed. Finally, the swing angles’ feature during the breakage process of the micro drill was analysed and researched with the image processing tools of MATLAB. Findings The micro drill was prone to breakage mainly because of the blocked chips. The breakage process of the micro drill can be divided into the stage of stable chips evacuation, the stage of blocked chips and the stage of drill bit breakage. The radians of swing angles were basically in the range of ±0.01 when the drilling possess is normal. But when the radians of swing angles considerably exceeded the range of ±0.01, the micro drill bit may be fractured. Originality/value This paper presented the method to study the characterization of drill bit breakage in the PCB drilling process by using high-speed video analysis technology. Meanwhile, an effective suggestion about monitoring the radians of swing angles to predict the breakage of micro drill bit was also provided.
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Jeong, Min-Jae, Sang-Woo Lee, Woong-Ki Jang, Hyung-Jin Kim, Young-Ho Seo, and Byeong-Hee Kim. "Prediction of Drill Bit Breakage Using an Infrared Sensor." Sensors 21, no. 8 (2021): 2808. http://dx.doi.org/10.3390/s21082808.
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In this paper, a novel drill bit breakage prediction method featuring a low-cost commercial infrared sensor to monitor drill bit corner wear is proposed. In the proposed method, the drill bit outer corner wear state can be monitored by measuring reflected infrared light because the reflection phenomenon is influenced by wear, edge shape, and surface roughness of the drill bit. In the experiments, a titanium workpiece was drilled without using cutting fluid to accelerate drill bit fracture. After drilling a hole in the workpiece, reflected infrared light was measured for the drill bit rotating at 100 rpm. Collected data on intensity of infrared light reflected from the circumferential surface of the drill bit versus the rotation angle of the drill bit were considered to predict tool breakage; two significant positions to predict tool breakage were found from the reflected infrared light graphs. By defining gradient vectors from the slopes of the reflected infrared light curves, a reliable criterion for determining drill bit breakage could be established. The proposed method offers possibilities for new measurement and analysis methods that have not been used in conventional tool wear and damage studies. The advantage of the proposed method is that the measurement device is easy to install and the measured signal is resistant to electromagnetic noise and ambient temperature because optical fiber is used as the signal transmission medium. It also eliminates the need for complex analysis of the measured signal, eliminating the need for a high-performance analyzer and reducing analysis time.
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Zheng, Hui Meng, Jian Qing Chen, and Shou Xin Zhu. "On-Line Fuzzy Monitoring of Micro-Hole Drilling Based on Genetic Algorithm." Applied Mechanics and Materials 184-185 (June 2012): 1588–91. http://dx.doi.org/10.4028/www.scientific.net/amm.184-185.1588.
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In automated micro-hole drilling system, in order to improve the drilling performance and reduce of production costs by maximizing the use of drill life and preventing drill failures, the drill bit wear state monitoring is more important. However, drill bit wear is difficult to measure in drilling process. By observation, wear failure of the drill bit could cause related changes of the spindle current signal, so construct fuzzy control mathematical models with the relationship between drill bit wear and spindle current, genetic algorithm and fuzzy control theory are applied to micro-drilling system in this paper .The membership functions of fuzzy control model are optimized by genetic algorithms. Through calculation, we can get drill bit wear value which used as monitoring threshold value in micro-hole drilling on-line monitoring system to avoid the drill breakage and improve the monitoring reliability.
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MYRZAKHMETOV, B. A., B. К. MAULETBEKOVA, A. A. MYRZABEKOVA, and Zh K. TATAEVA. "THE FEATURES OF WORK OF CARBIDE-TIPPED DRILL IN CRUMBLING ROCKS." Neft i Gaz 139, no. 1 (2024): 52–60. http://dx.doi.org/10.37878/2708-0080/2024-1.04.
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The drill bit in the oil and gas industry plays a key role in the drilling process, but its operation in the field, filled with difficulties and dangers, emphasizes the need for careful study of its behavior. This equipment, which is the head of the well, is forced to face various challenges during drilling, where danger can await at every step. However, special attention should be paid to those cases when the drill bit collides with crumbling rocks. In conditions of high pressure and friction associated with drilling, the drill bit is subjected to significant loads. These conditions can lead to damage and breakage of equipment, which in turn creates additional risks for workers on site. Understanding the behavior of a drill bit in crumbling rock is becoming an extremely important aspect to ensure the efficiency and safety of field work. The analysis of the technical characteristics and mechanisms of the impact of the drill bit on crumbling rocks makes it possible to develop more reliable and durable tools capable of withstanding extreme conditions. This, in turn, increases drilling efficiency, reduces the risk of industrial accidents and ensures safer working conditions in the oil and gas industry.
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Fu, J. C., C. A. Troy, and P. J. Phillips. "A matching pursuit approach to small drill bit breakage prediction." International Journal of Production Research 37, no. 14 (1999): 3247–61. http://dx.doi.org/10.1080/002075499190266.
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Wang, Jin Song, Pin Lu Cao, and Kun Yin. "Structure Design of and Numerical Simulation on an Annular Reverse Circulation Drill Bit." Applied Mechanics and Materials 733 (February 2015): 558–61. http://dx.doi.org/10.4028/www.scientific.net/amm.733.558.
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The reverse circulation drilling technology of hollow through DTH air hammer is a set of efficient coring with DTH air hammer, full-hole reverse circulation with drilling fluids, and continuous coring without power lack. It been successfully applied in mineral resources exploration, water well drilling, infrastructure construction and other fields. We designed a new type of annular reverse circulation drilling bit in order to prevent drilling accident when drilling in complex strata, such as breakage and leakage. In this paper, the computational fluid dynamics (CFD) code, FLUENT, is employed to simulate the flow phenomena of reverse circulation drill bit. Numerical simulation results show that the values of negative pressure of new type annular reverse circulation drill bit which formed in the center channel and the bottom of hole were larger than those of the normal bit. Under the same conditions, the suction quantity from annulus of annular drilling bit is 1.4 times to the normal one.
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Szwajka, Krzysztof, Joanna Zielińska-Szwajka, Krzysztof Żaba, and Tomasz Trzepieciński. "An Investigation of the Sequential Micro-Laser Drilling and Conventional Re-Drilling of Angled Holes in an Inconel 625 Ni-Based Alloy." Lubricants 11, no. 9 (2023): 384. http://dx.doi.org/10.3390/lubricants11090384.
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The conventional (mechanical) micro-drilling of Inconel 625 alloys suffers from premature breakage of the drill bit due to its brittle nature and limited cutting tool life. Even greater problems are encountered when micro-drilling holes at an acute angle to the machining plane. In such a process, there are great difficulties associated with the low stiffness of the tool, which leads to the frequent breakage of the drill during machining. Therefore, in this type of mechanical drilling operation, the hole surface is usually milled with an end mill to provide a flat surface on the entry side of the drill bit. The aim of this article is to recognise the process of sequential micro-drilling and to assess the possibility of its use as an effective and efficient method of micro-drilling in hard-to-cut metals. The paper describes the process of initial laser drilling followed by final mechanical micro-drilling. Inconel 625 Ni-based alloy sheets were used as the test material. The shape and microstructure of pre-holes made with a laser, the volumetric efficiency of laser processing, the energy in the mechanical drilling process, and tool wear were analysed. The research results show that in the sequential drilling process, mechanical re-drilling eliminates the geometrical discrepancies resulting from the laser pre-drilling. In addition, it was found that, compared to mechanical micro-drilling, the use of sequential micro-drilling resulted in a two-fold increase in drill life. It has been also observed that sequential machining reduces the energy demand by 60% compared to mechanical micro-drilling. In addition, it was found that the edge of the drill bit is a key factor in deciding the target diameter of the laser-drilled pilot hole, and thus in selecting the micro-drilling parameters.
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Ayop, Ahmad Zhafran, Ahmad Zafri Bahruddin, Belladonna Maulianda, et al. "Numerical modeling on drilling fluid and cutter design effect on drilling bit cutter thermal wear and breakdown." Journal of Petroleum Exploration and Production Technology 10, no. 3 (2019): 959–68. http://dx.doi.org/10.1007/s13202-019-00790-7.
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Abstract The unconventional reservoir geological complexity will reduce the drilling bit performance. The drill bit poor performance was the reduction in rate of penetration (ROP) due to bit balling and worn cutter and downhole vibrations that led to polycrystalline diamond compact (PDC) cutter to break prematurely. These poor performances were caused by drilling the transitional formations (interbedded formations) that could create huge imbalance of forces, causing downhole vibration which led to PDC cutter breakage and thermal wear. These consequently caused worn cutter which lowered the ROP. This low performance required necessary improvements in drill bit cutter design. This research investigates thermal–mechanical wear of three specific PDC cutters: standard chamfered, ax, and stinger on the application of heat flux and cooling effect by different drilling fluids by using FEM. Based on simulation results, the best combination to be used was chamfered cutter geometry with OBM or stinger cutter geometry with SBM. Modeling studies require experimental validation of the results.
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Zhou, Hu, Bin Yu, Ning Li, et al. "Preparation and performances of coated and aluminous entry boards with water-soluble resins for PCB drilling." Circuit World 42, no. 4 (2016): 153–61. http://dx.doi.org/10.1108/cw-05-2016-0018.
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Purpose This paper aims to provide a new drilling entry board for printed circuit board (PCB) process, superior in heat dissipation, lubrication, water solubility and hole location accuracy, achieving an excellent drilling process. Design/methodology/approach Using a mixture of polyethylene glycol (PEG) and water-soluble adhesives as hydrosoluble, endothermic and lubricant resins and aluminum foils as baseplates, a series of coated and aluminous entry boards (CABs) for PCB drilling was successfully prepared. The surface appearance of the entry boards was observed clearly by scanning electron microscopy (SEM). The endothermic and lubricant effects of the resins applied on the CABs was characterized by differential scanning calorimetry (DSC) and their water solubility was tested in the normal-temperature water (25°C). Moreover, the CABs’ good drilling properties were tested when they were used for PCB drilling. Findings The SEM analysis showed that the surfaces of the resin layers coated on the CABs whose coating thicknesses were less than 80 μm were smoother and flatter, which could improve hole location accuracy and reduce drill breakage ratio. By virtue of DSC, the endothermic and lubricant effects of the CABs were proven. The fusion of PEG in the resin layers could absorb the heat produced by drilling, restrain the temperature of the drill bit and hole rising and lubricate the drill bit efficiently when a hole was being drilled, which could achieve high-quality holes with good production efficiency. The water-soluble test showed that the prepared CABs had excellent water solubility at normal temperature, enabling the resin left on the hole walls and in the flute of the drill bit to be washed away easily and thereby improving the drilling efficiency and quality. The drilling tests showed that the increase in the thickness of the CABs’ coating could improve the hole location accuracy and alleviate the bit wear. In addition, the suitable coating thickness could ensure the firm adhering of the resin coating the aluminum foil, effectively avoid drill intertwist and prevent the resin debris from blocking the drilled holes on the surface of the entry board, which could hinder chip removal, resulting in poor hole wall quality and drill breakage. Originality/value This paper has a remarkably high industrial practicality in the PCB manufacture process.
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Hase, Alan. "In Situ Measurement of the Machining State in Small-Diameter Drilling by Acoustic Emission Sensing." Coatings 14, no. 2 (2024): 193. http://dx.doi.org/10.3390/coatings14020193.
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In drilling small holes with diameters of 1 mm or less, minute clogging and twining of chips or the adhesion of the workpiece material can become factors in causing breakages of the drill bit; moreover, it can be difficult to identify the machining state. Acoustic emission (AE) sensing is a nondestructive inspection technique that measures the elastic-stress waves that are generated when a material is deformed and fractured. AE sensing permits highly sensitive measurements to be made without changing the rigidity of the experimental system, unlike force sensing of cutting resistance, etc. In the present study, attempts were made to identify the machining state and tool wear, and to predict abnormalities in small-diameter drilling by using the change in the frequency of AE signal waveforms arising from deformation and fracture. It was shown that it is possible to predict the breakage of the drill bit by detecting high-frequency AE signals at about 1 MHz, caused by the adhesion of the workpiece material. In addition, a correlation map of the AE frequency spectrum for identifying the machining state in a drilling operation is suggested.
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Zhang, Li Gang, Tie Yan, and Shi Bin Li. "Design of High-Efficient Bits for Igneous Rock in Xushen Gasfield." Applied Mechanics and Materials 385-386 (August 2013): 308–11. http://dx.doi.org/10.4028/www.scientific.net/amm.385-386.308.
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The igneous rocks in deep formations of the Xushen gasfield have the following characters: high abrasive property, high hardness, and high drillability, which lead to many drill bit accidents, few footage per bit , low efficiency of drilling, long drilling cycle, these severely restrict the exploration and development process of gas field. According to the features of deep formation, a hybird cutters bit is designed. It has three cones, with the overhang cone , duplicate taper and offset cone characters. The tungsten carbide cutters and the polycrystalline diamond compacts cutters are alternative collocation in the same tooth row in the bit. The exposed height of the tungsten carbide cutters is higher than polycrystalline diamond compacts cutters. The back rake angle of polycrystalline diamond compacts cutters is 10 ~ 40 °, the side rake angle is 10 ~ 30 °. The normal direction of working face stay the same with the composite slip direction, and the side rake pointed at adjacent gullet. Through the design method, it is integrated that the advantages of roller bit and PDC bit, the way of impact breakage and rotational shear breakage and the prominent performance of tungsten carbide cutters and polycrystalline diamond compacts cutters. It can improveROP and bit life.
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Aliyev, A. M. "Study of the Mechanism of Tooth Wear in the Drilling Rotor." Herald of Azerbaijan Engineering Academy 15, no. 1 (2023): 55–64. https://doi.org/10.52171/2076-0515_2023_15_01_55_64.
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Since the bevel gears used in the drilling rotor operate under high stress-strain conditions, varioustypes of failures can occur. In rotary drilling, the rock is destroyed by the drill bit as a result of the longitudinal load applied to the bit and the rotation of the bit. When working with a downhole motor, the reactivetorque generated from rotation is transferred to the body due to the stop of the driven conical wheel of therotor; in both cases, the conical pair of the rotor is in a stress-strain state. If we take into account that thestarting torque of the engine exceeds the nominal value, the shocks that occur in each cycle are repeatedand affect the contact of the gear pair. The combined effect of axial, torsional and transverse vibrationsthat occur at the bottom of the well leads to crushing, bending and breakage of the teeth of the rotorwheels. To use the power of drilling motors effectively, it is important to choose the right combination ofthrust force and rotational speed depending on the diameter of the bit. These issues are resolved dependingon many factors, including well depth, bit diameter, drilling fluid parameters, thrust values and frequency.rotation, drill string diameter.
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Samant, Vinay, Ashraf Shaikh, Mohan Desai, Rudra Prabhu, Rachit Sekhrajka, and Rohit Somani. "Intraosseous Retrieval of Broken Guide Wire while Fixing Proximal Femur Fractures – A Report of 2 Cases and Review of Literature." Journal of Orthopaedic Case Reports 13, no. 11 (2023): 37–41. http://dx.doi.org/10.13107/jocr.2023.v13.i11.3998.
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Introduction: Hardware breakage during surgery is a known risk that may result in serious complications. Drill bits and guide wires are particularly prone to breakage, and if not promptly recognized and removed, can cause damage to intrapelvic structures, or may lead to hip arthritis later. Herein, we present two cases in which broken guide wire fragments were safely retrieved through the same incision, resulting in good outcomes and reduced morbidity. Case Report: In the first case, a broken guide wire piece that had been pushed into the hip joint during intertrochanteric fracture surgery was retrieved using disc forceps after reaming over the same guide tract. In the second case, the broken tip of a partially withdrawn guide wire was removed from a transcervical femur fracture using a cannulated drill bit. Conclusion: Our approach highlights the importance of attempting retrieval of broken hardware through the same tract using unconventional instruments, such as disc forceps, before resorting to more invasive methods, such as arthrotomy or separate incisions. These cases demonstrate the feasibility of this approach and its potential to reduce morbidity associated with hardware retrieval. Keywords: Proximal femur fracture, broken hardware, unconventional methods, drill bits, guide wires, disc forceps.
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Mori, K., N. Kasashima, J. C. Fu, and K. Muto. "Prediction of small drill bit breakage by wavelet transforms and linear discriminant functions." International Journal of Machine Tools and Manufacture 39, no. 9 (1999): 1471–84. http://dx.doi.org/10.1016/s0890-6955(99)00004-8.
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Rai, Bharatendra K., Ratna Babu Chinnam, and Nanua Singh. "Prediction of drill-bit breakage from degradation signals using Mahalanobis-Taguchi system analysis." International Journal of Industrial and Systems Engineering 3, no. 2 (2008): 134. http://dx.doi.org/10.1504/ijise.2008.016741.
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Ge, Zhaolong, Lei Wang, Man Wang, Zhe Zhou, Songqiang Xiao, and Hanyun Zhao. "Rock-Breaking Properties Under the Rotatory Impact of Water Jets in Water Jet Drilling." Applied Sciences 9, no. 24 (2019): 5417. http://dx.doi.org/10.3390/app9245417.
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Water jet drilling is widely used to develop coalbed methane reservoirs. The water jet drill bit is the core component, and a self-rotating bit is an economical bit because of its high rock-breaking efficiency and low energy consumption. Because the important parameters concerning the rock-breaking efficiency of these drill bits are unclear, this study carried out rock-breaking experiments on water jet rotation under different conditions of drill bit rotation speed, jet pressure, and jet impact angle. How the rock was fractured and eroded under these different conditions was analyzed. The results show that the volume of rock broken under rotary jet erosion increases exponentially with increasing jet pressure. The rock-breaking depth is the most important factor that influences the volume of rock broken, whereas the diameter of the area broken is a secondary factor. There is an optimum water jet rotation speed for the most efficient rock breakage, and this rotation speed is positively correlated with jet pressure. There is also an optimum water jet impact angle for rock breaking, and, in our experiments, this angle was 10°. The rotary impact of the water jet causes the rock to be in a three-way tension state, and this reduces the water cushion effect and jet reflection. This study can be used as a reference and guide for optimizing the design of self-rotating water jet bits and the determination of reasonable drilling parameters.
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Karri, V., and T. Kiatcharoenpol. "A Monitoring System of Drill Wear States Using a Hybrid Neural Network." Materials Science Forum 471-472 (December 2004): 697–701. http://dx.doi.org/10.4028/www.scientific.net/msf.471-472.697.
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A reliable and sensitive technique of cutting tool condition monitoring in drilling is essential help for practising engineers. It is commonly known that a worn drill bit produces a poor quality hole. In extreme cases, a catastrophic failure of a drill bit during cutting can destroy a work-piece and damage a machine tool resulting in low productivity and expensive down time To detect the states of cutting tool wear condition, attempts are made to physically measure wear land. An intelligent system for detecting wear condition without interrupting the process is essential to avoid unexpected cutting tool breakage. In this work, an intelligent algorithm is proposed to real-time monitoring of drill wear states, in the form of a digital display, over a comprehensive range of cutting conditions. A novel neural network, Hybrid Neural Network (HNN), was developed and tested in this task. The results of the HNN have shown the ability to accurately monitor the wear states up to a 92% success rate. With such a highly accuracy of results, the developed system can be used for monitoring wear states in drilling and warning operators.
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Ariyanto, Sudirman Rizki, Muhammad Yandi Pratama, Warju Warju, Rachmad Syarifudin Hidayatullah, and Muhammad Syahrul Anwari. "ANALISIS KEGAGALAN PADA PATAHAN MATA BOR TIPE HIGH SPEED STEEL." Steam Engineering 6, no. 2 (2025): 104–11. https://doi.org/10.37304/jptm.v6i2.19625.
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Drill bit failure in the drilling process often occurs due to exposure to mechanical, thermal, and chemical loads during operation. Nachi HSS drill bits, as critical components in the manufacturing industry, are prone to sudden wear and breakage due to dynamic processes involving material fragmentation, friction, and increased local temperatures. This study analyses the root cause of Nachi HSS drill bit failure through fracture investigation, chemical composition, and microstructure. The analysis methods include macroscopic testing to identify fracture patterns, optical microscopy to evaluate surface deformation, and X-ray Fluorescence (XRF) testing to verify material composition. The results showed that the fault was a brittle fracture due to a mismatch in chemical composition: molybdenum (Mo) levels were not detected. At the same time, chromium (Cr) and vanadium (V) only reached 3.85% and 0.95%, 0.45% lower than factory standards. This deficiency reduces resistance to thermomechanical loads, triggering stress concentration and rapid crack propagation during the drilling of ST37 steel material at a speed of 1,800 RPM. These findings emphasize the importance of quality control of material composition and optimization of operating parameters to prevent premature failure.
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Wu, Zebing, Ruofei Yuan, Wenxi Zhang, Jiale Liu, and Shiyao Hu. "Structure Design of Bionic PDC Cutter and the Characteristics of Rock Breaking Processes." Processes 12, no. 1 (2023): 66. http://dx.doi.org/10.3390/pr12010066.
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The rational structural design of polycrystalline diamond compact (PDC) cutters effectively enhances the performance of drill bits in rock fragmentation and extends their service life. Inspired by bionics, a bionic PDC cutter was designed, taking the mole claw toe, shark tooth, and microscopic biomaterial structures as the bionic prototypes. To verify its rock-breaking effectiveness, the finite element method was employed to compare the rock-breaking processes of the bionic cutter, triangular prism cutter, and axe cutter. The study also investigated the influence of different back rake angles, cutting depths, arc radii, and hydrostatic pressures on rock breaking using the bionic cutter. Prior to this, the accuracy of the finite element model was validated through laboratory tests. Subsequently, a drill bit incorporating all three types of cutters was constructed, and simulations of rock breaking were conducted on a full-sized drill bit. The results demonstrate that the bionic cutter exhibits superior load concentration on the rock compared to the triangular prism cutter and the axe cutter. Additionally, its arc structure facilitates the “shoveling” of the rock, making it more susceptible to breakage under tensile stress. As a result, the efficiency of the bionic cutter surpasses that of the triangular prism and axe cutters. Similarly, it exhibits minimal fluctuations and values in cutting force. As the back rake angle and cutting depth increase, the MSE and cutting force of all three cutters also increase. However, the bionic cutter consistently maintains the lowest MSE and cutting force, confirming the superiority of its bionic structural design. The MSE and cutting force of the bionic cutter fluctuate with the increase of the arc radius, and the optimal arc radius falls within the simulation range, between 21 mm and 23 mm. Compared to the other two types of cutters, bionic cutters possess a unique structure that allows for better release of internal stress within the rock, thereby ensuring higher efficiency in rock-breaking, particularly in deep geological formations. The rock breaking simulation results of full-sized drill bits show that the use of a bionic cutter can improve the drill bit’s ability to penetrate the formation, reduce the possibility of drill bit bounce during the rock breaking process, prevent the occurrence of stick-slip, improve the drilling stability, effectively improve the efficiency and service life of the drill bit during the rock breaking process, and reduce the drilling cost. It is concluded that the research results of bionic PDC cutters are helpful to the development of high-performance drill bits and the reduction of drilling costs.
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KASASHIMA, Nagayoshi, Kazuo MORI, FU J.C., TROY C., and Yoshihiro TAKEYASU. "Prediction of Small Drill Bit Breakage Using the Discrete Wavelet Transforms and Linear Discriminant Functions." Journal of the Japan Society for Precision Engineering 65, no. 4 (1999): 598–603. http://dx.doi.org/10.2493/jjspe.65.598.
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Liu, Yong, Juan Zhang, Tao Zhang, and Huidong Zhang. "Optimal Nozzle Structure for an Abrasive Gas Jet for Rock Breakage." Geofluids 2018 (October 30, 2018): 1–14. http://dx.doi.org/10.1155/2018/9457178.
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Abrasive gas jet technologies are efficient and beneficial and are widely used to drill metal and glass substrates. When the inlet pressure is increased, gas jets could be powerful enough to break rock. They have potential uses in coal-bed methane exploration and drilling because of their one-of-a-kind nonliquid jet drilling, which avoids water invasion and borehole collapse. Improving the efficiency of rock breakage using abrasive gas jets is an essential precondition for future coal-bed methane exploration. The nozzle structure is vital to the flow field and erosion rate. Furthermore, optimizing the nozzle structure for improving the efficiency of rock breakage is essential. By combining aerodynamics and by fixing the condition of the nozzle in the drill bit, we design four types of preliminary nozzles. The erosion rates of the four nozzles are calculated by numerical simulation, enabling us to conclude that a nozzle at Mach 3 can induce maximum erosion when the pressure is 25 MPa. Higher pressures cannot improve erosion rates because the shield effect decreases the impact energy. Smaller pressures cannot accelerate erosion rates because of short expansion waves and low velocities of the gas jets. An optimal nozzle structure is promoted with extended expansion waves and less obvious shield effects. To further optimize the nozzle structure, erosion rates at various conditions are calculated using the single-variable method. The optimal nozzle structure is achieved by comparing the erosion rates of different nozzle structures. The experimental results on rock erosion are in good agreement with the numerical simulations. The optimal nozzle thus creates maximum erosion volume and depth.
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Meeks, Brett, Eric Kiskaddon, Michael Boin, Tejas Patel, Richard Laughlin, and Michael Prayson. "Novel Technique for Fixation of Medial Malleolus Fractures." Foot & Ankle Orthopaedics 2, no. 3 (2017): 2473011417S0002. http://dx.doi.org/10.1177/2473011417s000291.
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Category: Ankle, Trauma Introduction/Purpose: The traditional method for fixation of medial malleolar fractures has been with partially threaded (PT) lag screws extending beyond the physeal scar. Recent studies have shown fully threaded (FT) bicortical fixation in the tibial metaphysis provides superior biomechanical, radiographic and clinical outcomes. Risks with the bicortical technique include drill bit breakage, as well as injury to structures lateral to the tibial metaphysis if the far cortex is overdrilled. We hypothesized that far endosteal fixation, without penetration of the far cortex, would provide increased biomechanical strength compared to traditional PT lag screw fixation, while minimizing the risks associated with bicortical fixation. Methods: Twelve matched pairs of cadaver ankles were harvested and an oscillating saw was used to make an osteotomy at a 45- degree angle to the axilla. The medial malleolus was then re-approximated and held in the correct orientation using two kirschner wires. A 2.7 mm drill bit was used to drill a unicortical pilot hole perpendicular to the osteotomy. The left ankle was used for all PT 3.5 mm cancellous screws and all screw lengths were 45 mm. For the contralateral ankle, the 2.7 mm drill bit was used to drill to the lateral tibial cortex. The depth gauge was then used and five millimeters was added to the measured number to achieve endosteal purchase with the appropriate FT screw. Screw lengths varied in size from 55-70 mm. Screws were then placed using a torque measuring screw driver and final torque was recorded. Finally, radiographs were taken to confirm appropriate placement. Results: Average torque for unicortical PT cancellous screws was 5.02 inch-pounds with a standard deviation of 2.34. Average torque for all FT cortical screws was 7.63 inch-pounds with a standard deviation of 3.86 (Fig. 1A). A paired student’s t-test was performed comparing both fixation methods and the measured P-value was <0.01. Visual and radiographic inspection revealed no displacement of the fracture site using the FT endosteal screw (Fig. 1C). Conclusion: Our results indicate superior biomechanical torque with far endosteal fixation as compared to a traditional PT lag screw, while minimizing risks associated with bicortical fixation. This novel technique may provide added strength with minimal risk in vivo. Further clinical studies comparing radiographic results and outcomes of far endosteal fixation versus bicortical fixation are needed to ascertain the value of this fixation technique for medial malleolus fractures.
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Salunke, Abhijeet Ashok, Prem Haridas Menon, Gurunathampalayam Ilango Nambi, et al. "Removing a broken guidewire in the hip joint: treatment options and recommendations for preventing an avoidable surgical catastrophe. A case report." Sao Paulo Medical Journal 133, no. 6 (2015): 531–34. http://dx.doi.org/10.1590/1516-3180.2014.9061512.
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ABSTRACT CONTEXT: Hardware breakage during hip surgery can pose challenging and difficult problems for orthopedic surgeons. Apart from technical difficulties relating to retrieval of the broken hardware, complications such as adjacent joint arthritis and damage to neurovascular structures and major viscera can occur. Complications occurring during the perioperative period must be informed to the patient and proper documentation is essential. The treatment options must be discussed with the patient and relatives and the implant company must be informed about this untoward incident. CASE REPORT: We report a case of complete removal of the implant and then removal of the broken guidewire using a combination of techniques, including a cannulated drill bit, pituitary forceps and Kerrison rongeur. CONCLUSIONS: We suggest some treatment options and recommendations for preventing an avoidable surgical catastrophe.
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Liu, Qingyun, Yiwen Zha, Tao Liu, and Chao Lu. "Research on Adaptive Control of Air-Borne Bolting Rigs Based on Genetic Algorithm Optimization." Machines 9, no. 10 (2021): 240. http://dx.doi.org/10.3390/machines9100240.
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Rotation speed and propulsive force are the two critical parameters in the work of the air-borne bolting rig. To address the problem that unreasonable rotation speed and propulsive force will induce the breakage of the drill pipe and the inability of the drill bit to cut coal adequately this paper proposes an adaptive control strategy for the air-borne bolting rig based on genetic algorithm optimization. Firstly, we obtain the corresponding coal hardness by the real-time acquisition of the working torque of the drill pipe. Then we calculate the reasonable rotation speed of the hydraulic motor and the propulsive force of the hydraulic cylinder on the coal of different hardness. Secondly, the genetic algorithm is applied to optimize the parameters of the PID (proportion integration differentiation) controller so that the system may attain the target value fast and reliably and achieve adaptive control. Finally, a simulation model of the slewing system and the propulsion system of the air-borne bolting rig are established in the AMESim hydraulic software, and the simulation tests were carried out under two distinct working conditions: single coal hardness and coal hardness of sudden change. The results indicate that the PID control strategy based on genetic algorithm optimization has a shorter response time, a smaller overshoot, and a lower steady-state error than the traditional PID control strategy.
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Ivanov, Ilya I., and Sergey A. Voronov. "Processing parameters influence on dynamics of vibratory drilling with adaptive control." MATEC Web of Conferences 226 (2018): 02001. http://dx.doi.org/10.1051/matecconf/201822602001.
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Chip segmentation is one of necessary conditions of ensuring the deep hole drilling quality when processing hard-to-machine metals. It may be achieved through making drill bit harmonic oscillations in axial direction. Possible way to maintain such vibrations is to replace the standard drilling head with special vibratory head which includes elastic element giving the instrument a possibility to move in axial direction. Self-excitation of drill regenerative oscillations is possible if elastic element stiffness and processing parameters are chosen properly. It is advisable to complement this way of excitation by control action which is determined in feedback circuit and sustains required vibration process characteristics in wide range of processing parameters. In present paper the adaptive control algorithm of vibratory drilling process dynamics is proposed. Control action on oscillation system is proportional to drill vibrational velocity, the feedback gain is determined in adaptation circuit basing on comparison of actual peakto- peak vibrational displacement and its target value. Simulation of closedloop nonlinear system «elastic system – machining process – control system» dynamics has been performed for different values of processing parameters for cases with or without control. The simulation revealed efficiency of suggested algorithm in wide range of processing parameters. Joined influence of processing parameters and target peak-to-peak displacement values on chip breakage conditions is studied. Recommendations for choice of processing parameters and control parameters values are developed. Influence of control action magnitude limit on control system possibilities to achieve control target is analyzed.
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Du, Cuiming, Yanxia Xing, Liangpeng Hao, Peng Hu, and Songgang Chai. "Effects of CCL inorganic filler on hole performance in PCB drilling process." Circuit World 44, no. 4 (2018): 161–64. http://dx.doi.org/10.1108/cw-11-2017-0069.
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Purpose This paper aims to investigate and document the effects of copper-clad laminate (CCL) inorganic filler on the hole performance in printed circuit boards drilling process. Design/methodology/approach Drilling of brittle laminates can result in hole cracking, layer-to-layer delamination and drill-bit wear and tool breakage. Adding large amount of fillers not only shortens the life of the drilling tool but also affects the drilling properties significantly regarding hole quality. This paper introduces the influence of filler content, type, hardness, particle size and the compounding method in the manufacture of the CCL on the drilling performance. Findings The filler content, filler type, hardness of filler, particle size of filler and the compounding method used for the filler have a great influence on the drilling properties of CCL. The higher the filler content, the larger the particle size and the more the hardness of the filler, the worse the drilling properties. The combination of hard particles like silica with softer particles can improve the drilling performance of CCL. Originality/value The paper describes what affects the drilling performance of CCL and how this knowledge can be used to design CCL with good drilling performance.
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Yang, Bin, and Honglin Xu. "Analysis of Bottomhole Rock Stress in Deep-Well Drilling Considering Thermal-Hydro-Mechanical Coupling." Processes 11, no. 3 (2023): 683. http://dx.doi.org/10.3390/pr11030683.
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Drilling is a key step in the exploitation of deep oil and gas resources. In order to clarify the stress state of the rocks and the mechanism of rock breakage in deep-well drilling, a thermal-hydro-mechanical coupling model for deep-well drilling was established, and the effects of drilling on the temperature, pressure, and stress in the formation were studied. Furthermore, the effects of the formation parameters and wellbore parameters on the bottomhole stress were analyzed. The results revealed that after the formation was drilled, the temperatures in different horizontal in situ stress directions were not significantly different, but the difference in the pore pressure between the maximum and minimum horizontal stress directions was large. The average effective stress at the bottom of the hole was the smallest, and in some areas, it was tensile stress. For deep-well drilling, as the formation pressure increased, the in situ stress increased, and the permeability decreased, leading to greater average effective stress of the bottomhole rock. As a result, it was harder to break the rock, and the drilling efficiency decreased. Reducing the wellbore pressure and wellbore temperature is conducive to forming tensile stress near the borehole axis in the bottomhole, causing tensile damage. The average effective stress of the formation near the shoulder of the drill bit was compressive stress, and it is advisable to take advantage of the rock shear failure characteristics to improve the drilling efficiency in this area. The results of this study can help us to understand the stress state of the bottomhole rocks and the mechanism of rock breakage and can provide a reference for the optimization of drilling tools and drilling parameters in deep-well drilling.
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Liu, Jiliang, Jinsheng Sun, Guancheng Jiang, and Yongjin Yu. "A Study on the Influence of Core Stability on the Coring Process of Long-Barrel Coring Tools." Processes 12, no. 12 (2024): 2847. https://doi.org/10.3390/pr12122847.
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In the process of long-barrel coring, the improper selection of operating parameters can easily cause blocked deformation, violent vibration of the core, core fracture, and impact crushing, which lead to a reduction in the stability of the core and core harvesting rates. Accurate knowledge of the influence of relevant factors on core stability is the key to improving core harvesting rates. Therefore, in this study, a numerical calculation model for tight and fractured cores in a barrel was constructed based on the Drucker–Prager criterion, using the finite element method. A numerical calculation model of a core broken into a barrel was constructed using the discrete element method. A study was conducted on the influence law of core stability under different core lengths, rotational speeds, weights on bit, and well inclination angles. The influence of each factor on core stability was analysed based on the vibration displacement and stress distribution characteristics of the core. The calculations show that increasing the weight on bit and reducing the rotation speed can effectively reduce the radial vibration displacement and local stress in tight and fractured cores, reduce the possibility of core fracture or breakage, and improve core stability. When the well inclination angle is large, it can easily cause core deformation and wall sliding, generating large contact stress and radial vibration displacement, significantly reducing the core stability. A broken core has the worst stability and is easily compacted in the core barrel, producing secondary crushing and plugging effects. Increasing the core barrel length resulted in a more unstable core. Compared with single-barrel coring, the distortion of the core column under double-barrel coring was more evident. In addition, the coring process, cuttings distribution, and drill bit hydraulic characteristics were studied based on the CFD-DPM method. The conclusions of this study are of great significance for optimising coring operation parameters to further improve core stability and coring harvest rate.
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Ren, Haitao, Jingwei Xu, Xin Jia, et al. "Numerical Simulation Study on Vibration Reduction Effect of Flexible Cutting Tooth Unit." Processes 11, no. 9 (2023): 2658. http://dx.doi.org/10.3390/pr11092658.
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Under the conditions of drilling in gravel-bearing and heterogeneous stratas, the movement and force of the PDC bit during drilling are highly unstable. Irregular impact loads often cause fatigue failures such as tooth fracture, tooth breakage and delamination of the composite sheet. Dynamic impact load is the main cause of fatigue failure of cutting teeth, which seriously affects the rock-breaking performance of PDC bits. This paper proposes a flexible cutting tooth unit consisting of a central tooth, an elastic element and a base. And the technical concept of flexible cutting rock breaking is to reduce the impact load amplitude suffered during the cutting process to a certain threshold range by setting elastic elements or reducing the support stiffness of cutting teeth, so as to inhibit the expansion of micro defects caused by impact dynamic load of cutting teeth and prolong the service life of drill bits. The finite element models of flexible cutting teeth for rock cutting were established. The influence of cutting depth, front rake angle and stiffness of elastic elements on the cushioning and vibration absorption effect of flexible cutting was analysed. The results show that flexible cutting can reduce the peak and average value of von Mises stress at the cutting edge. Under different cutting depth conditions, the decline rates were 21.45–49.02% and 9.42–17.8%, respectively. Then, under different front rake angle conditions, the decline rates were 20.51–24.02% and 9.41–17.8%, respectively. There is a suitable stiffness of the elastic element, which makes the peak and average value of von Mises stress at the cutting edge of the flexible cutting tooth unit perform better and the effect of improving the uneven stress distribution at the cutting edge better. Flexible cutting technology can effectively improve the adaptability of PDC bit in heterogeneous formation and reduce the occurrence of abnormal failure of cutting teeth. The research results of this paper can provide theoretical support for the drilling speed of PDC bits in hard formations.
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Orelaja, Oluseyi Adewale, Xingsong Wang, Donghua Shen, et al. "Comparative Analysis of Cutting Forces, Torques, and Vibration in Drilling of Bovine, Porcine, and Artificial Femur Bone with Considerations for Robot Effector Stiffness." Journal of Healthcare Engineering 2020 (October 19, 2020): 1–12. http://dx.doi.org/10.1155/2020/8817422.
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Bone drilling is known as one of the most sensitive milling processes in biomedical engineering field. Fracture behavior of this cortical bone during drilling has attracted the attention of many researchers; however, there are still impending concerns such as necrosis, tool breakage, and microcracks due to high cutting forces, torques, and high vibration while drilling. This paper presents a comparative analysis of the cutting forces, torques, and vibration resulted on different bone samples (bovine, porcine, and artificial femur) using a 6dof Robot arm effector with considerations of its stiffness effects. Experiments were conducted on two spindle speeds of 1000 and 1500 rpm with a drill bit diameter of 2.5 mm and 6 mm depth of cut. The results obtained from the specimens were processed and analyzed using MATLAB R2015b and Visio 2000 software; these results were then compared with a prior test using manual and conventional drilling methods. The results obtained show that there is a significant drop in the average values of maximum drilling force for all the bone specimens when the spindle speed changes from 1000 rev/min to 1500 rev/min, with a drop from (20.07 to 12.34 N), approximately 23.85% for bovine, (11.25 to 8.14 N) with 16.03% for porcine, and (5.62 to 3.86 N) with 33.99% for artificial femur. The maximum average values of torque also decrease from 41.2 to 24.2 N·mm (bovine), 37.0 to 21.6 N·mm (porcine), and 13.6 to 6.7 N·mm (artificial femur), respectively. At an increase in the spindle speed, the vibration amplitude on all the bone samples also increases considerably. The variation in drilling force, torque, and vibration in our result also confirm that the stiffness of the robot effector joint has negative effect on the bone precision during drilling process.
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Abbas, Abdalla Abbas Said, and Khaled Abou-El-Hossein. "Investigation of Drill Bit Temperature during Automatic Bone Drilling." International Journal of Engineering Materials and Manufacture 3, no. 4 (2018): 245–50. http://dx.doi.org/10.26776/ijemm.03.04.2018.09.
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Bone drilling operations are carried out in hospitals in different surgical operations worldwide (e.g. orthopedic surgeries and fixing bone breakages). It is considered one of the most sensitive processes in biomedical engineering field. During drilling, the most critical problem is the rise in the temperature of the bone above the allowable limit. A Study showed that the allowable limit that must not be exceeded is 50oC. Moreover, if this limit is exceeded, the bone may sustain serious damage, namely, thermal necrosis (cell death in bone tissue). The research in this paper focuses on reducing the temperature rise during bone drilling. A study was conducted to observe the effect of the drill rotational speed, feed rate and drilling depth on the drill bit temperature during drilling of goat and cow bone. Experimental methods were engaged to optimise the drilling parameters in order to achieve an accepted level of drill bit temperature.
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Bharatendra, Rai. "A Study of Classification Models to Predict Drill-Bit Breakage Using Degradation Signals." July 4, 2014. https://doi.org/10.5281/zenodo.1093996.
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Cutting tools are widely used in manufacturing processes and drilling is the most commonly used machining process. Although drill-bits used in drilling may not be expensive, their breakage can cause damage to expensive work piece being drilled and at the same time has major impact on productivity. Predicting drill-bit breakage, therefore, is important in reducing cost and improving productivity. This study uses twenty features extracted from two degradation signals viz., thrust force and torque. The methodology used involves developing and comparing decision tree, random forest, and multinomial logistic regression models for classifying and predicting drill-bit breakage using degradation signals.
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Sanchez, Christine E. "Broken Drill Bits During Surgical Procedures: A Review of 156 Patient Safety Events." PATIENT SAFETY 6, no. 1 (2024). https://doi.org/10.33940/001c.124086.
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Background Broken surgical drill bits pose a risk to patient safety. A routine review of event reports submitted to the Pennsylvania Patient Safety Reporting System (PA-PSRS) uncovered an increase in the number of event reports related to broken drill bits, prompting an exploration to better understand patterns of drill bit breakage in Pennsylvania. Methods We queried the PA-PSRS database to identify event reports describing a broken drill bit during surgery submitted between January 1, 2021, and December 31, 2023. Event reports were manually coded to identify the procedure, anatomic location of breakage in the patient’s body, timing of discovery, and fragment fate. Results A total of 156 relevant event reports were identified. The procedure being performed was determined in 64 of 156 event reports. Fracture repair procedures were most commonly reported to encounter a broken drill bit (27 of 64; 42.2%). We were able to determine the anatomic location in the patient’s body where the drill bit breakage occurred in 108 of 156 event reports. The most commonly reported anatomic location was the femur (27 of 108; 25.0%). We were able to determine the fate of the broken drill bit in 141 of 156 event reports, and most drill bits were retained in the patient (99 of 141; 70.2%). Conclusion This data analysis provides insight into broken drill bits in Pennsylvania facilities. Because drill bits are commonly broken pieces of equipment and the fragments from these broken pieces are frequently retained, it is important to prevent drill bit breakage to improve patient safety. Table 2 (251188) outlines prevention strategies established by equipment manufacturers and previous research. Implementing these strategies can address breakage across multiple procedures and patients. Plain Language Summary While a rare occurrence, surgical instruments may break during a procedure. In the case of drill bits, which are one of the most frequently broken surgical instruments, pieces that are left inside of a patient could cause harm, and may migrate to other parts of the body. When Patient Safety Authority researchers noted an increased number of events involving broken and retained drill bits during surgery, they analyzed data from the Pennsylvania Patient Safety Reporting System (PA-PSRS) to help decrease the risk of broken drill bits in surgery. In studying cases involving a drill bit breaking during surgery, researchers learned that most of these events occurred during fracture repair procedures and joint replacement surgery, and drill bits most frequently broke in the femur (thigh bone). In most event reports, the broken drill bit was discovered during the procedure, but in 2.6% of event reports (4 out of 156 reports) it was discovered after the operation. Removing drill bit fragments is recommended; however, surgeons may decide to leave them in place if removal risks damage to the surrounding area, and in many event reports broken drill bits were retained following the surgery with no further intervention. Hospitals and surgical facilities should look to existing literature and device manufacturers’ guidelines for prevention strategies, such as recommended surgical techniques; drill bit sterilization, reprocessing, and storage; and general safety measures, some of which are summarized in the article.
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Chen, Guoqing, Shujing Wu, Dazhong Wang, and Wenqing Dai. "Study on machinability of three-step drill in drilling Ti6Al4V." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, August 18, 2022, 095440542211161. http://dx.doi.org/10.1177/09544054221116169.
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As the research progresses, titanium alloy materials have more applications in aerospace and other fields. However, problems such as chip winding and serious tool wear are easy to occur in the machining process. In this research, the three-step drill has changed the main cutting-edge structure, which is more conducive to chip breakage. Firstly, the drilling force of the three-step drill bit is analyzed, and the alternating stress that makes the chip thickness change is obtained by the cutting-edge structure of the three-step drill bit. The simulation and experiment are verified by each other, and the feasibility of three-step drilling to improve the processing quality is obtained. The results show that the improved drill has good chip breaking performance, low thrust force, and better machining performance compared with the twist drill. In addition, the improved drill can obtain a more complete inner wall of the hole and reasonably improve the surface quality. Through experiments, it is found that changing cutting parameters such as feed rate has different effects on chip thickness, thrust and tool wear. It was found that the drilling force was reduced by drilling Ti6Al4V material with the three-step drill. Moreover, the three-step drill can produce smaller chip thicknesses and make the chip more prone to breakage when compared with the twist drill. The high wear of three-step drill bits can also be better weakened by coating materials.
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Toshov, J., B. Baratov, K. Sherov, et al. "Ways to Optimize the Kinetic Parameters of Tricone Drill Bits." Material and Mechanical Engineering Technology 1 (March 30, 2024). http://dx.doi.org/10.52209/2706-977x_2024_1_35.
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The improvement of the operation of roller cone bits, only drilling indicators are optimized, which include axial load, frequency of rotation, borehole diameter and rock fortress coefficient. The use of one or another roller bit can be justified by the physical-mechanical properties of rocks, which can have different values depending on the depth of drilling and the horizon. However, while resolving energy costs on the basis of the quality of the drill bits’ interaction with the physical-mechanical properties of rocks and the condition of the cutters at the bottom of the well, which require high-tech solutions with scientific bases, it is possible to make the choice and justify a more efficient design of the drill bit. The article discusses a new method for determining the patency of a drilling cone bit using the determination of the workload of teeth and crowns based on kinematic calculations. Based on the kinematic parameters, the gear ratio of the cones, the specific indicators of contact and operation of the teeth on the bit crowns are determined, which in turn show the most loaded crowns. Based on these indicators, it is possible to determine crowns that are prone to breakage during the operation of bits. By this calculation was made a new program which by geometrical parameters of the tricone drill bit can show graphics of the work cones and crowns.
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Prabhat, Vinay, Kamlesh Kumar, Kumar Gaurav, and Rohit Topno. "Retrieval of Broken Guidewire from the Hip Joint Protruding inside the Pelvic Cavity: A Rare Case Report." Annals of African Medicine, August 13, 2024. http://dx.doi.org/10.4103/aam.aam_51_24.
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Abstract Hardware breakage in the form of guide wire or drill bit is a devastating complication particularly if occurs around hip joint during cephalo-medullary nailing. It should be removed on urgent basis as it can migrate to the pelvic cavity and damages adjacent neuro-vascular bundle and visceral organ immediately as well joint arthritis later on. There are very few cases report available in the literature with retrieval techniques by using disc forceps, pituitary forceps, oversized reamers, arthrotomy with joint dislocation and through ilioinguinal approaches occasionally. We are presenting an interesting and rare case of broken guide wire inside hip joint protruding into the pelvic cavity which got retrieved through lower midline open laparotomy approach.
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Luenam, Suriya, and Arkaphat Kosiyatrakul. "Triple suture fixation for displaced comminuted olecranon fracture with a stable ulnohumeral joint." Journal of Orthopaedic Surgery 31, no. 3 (2023). http://dx.doi.org/10.1177/10225536231215576.
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Purpose To report the outcome of a novel fixation technique using three high-strength sutures which is including articular buttress suture, cerclage suture, and tension band with off-loading triceps suture (triple suture fixation) in the treatment of displaced comminuted olecranon fracture with a stable ulnohumeral joint (Mayo type IIB). The rationale of using this technique is that the sutures have been used to stabilize multiple fracture fragments in all sides of the olecranon. Material and Methods Between July 2018 and July 2021, 10 patients (7 women, 3 men; mean age, 49.9 years; mean follow-up duration, 27.8 months) with Mayo type IIB olecranon fractures who underwent triple suture fixation were included in the study. The elbow was immobilized in a splint for 2 weeks postoperatively. Range-of-motion exercises were initiated after splint removal and weight bearing was allowed at 6 weeks postoperatively. Results Average active range of motion of the elbow was 145° of flexion (range, 135°–150°), 6.5° of extension (range, 0°–30°), 83° of supination (range, 70°–85°), and 77.5° of pronation (range, 70°–80°). Mean MEPS was 98.3 (range, 85–100) and DASH score was 3.1 (range, 0–10) at the final follow-up. Radiographic data at the final follow-up analyzed by paired t test demonstrated that there was no statistically significant difference of proximal olecranon height (OH), trochlear notch width (TW), and OH/TW ratio between postoperative treatment and normal side ( p-value >.05). No complication of implant prominence, fixation failure, nonunion, infection or heterotopic ossification was found postoperatively. Breakage of drill bit occurred during drilling a distal oblique hole for articular buttress suture in one patient. Conclusion The triple suture fixation is an effective treatment with low incidence of complications in treatment of Mayo type IIB olecranon fractures. Larger comparative studies are needed to confirm the value of such technique.