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Journal articles on the topic 'Vertical turning and boring machine'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Feng, Jin Chun, You De Wu, Chao Zhu, Lin Jian Yang, and Lei Li. "Research on the Efficient Cylinder Cutting on CNC Boring Machine Combining with Self-Made Welding Cutter." Applied Mechanics and Materials 34-35 (October 2010): 743–46. http://dx.doi.org/10.4028/www.scientific.net/amm.34-35.743.

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Because of the combination of self-made or common boring bar and CNC program, we machined two external cylinders used for tightening ring (φ500u6(+0.58/+0.54)×130mm ) of a vertical roller mill, and conquered the difficulty on machining high-precision cylindrical on the boring machine. This process improvement not only brings the machining advantage of CNC machine tools into full play, but also organically integrates conventional boring to turning methods, which can cause high machining efficiency. Since the special tooling is not needed and it’s easy to obtain materials from local sources, we

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2

Безъязычный, Вячеслав, Vyacheslav Bezyazychnyy, Александр Чукарин, et al. "Sliding block vibrations when turning." Science intensive technologies in mechanical engineering 2018, no. 11 (2018): 3–8. http://dx.doi.org/10.30987/article_5bd8ab4233c8d4.32366481.

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Computation dependences on the definition of vibration amplitude in machine sliding blocks of a lathe group, in particular, sliding blocks of boring lathes of VM series, feed through cutters and boring ones are defined. Vibration speeds of oscillations in the direction of coordinate axes with the aid of which one defines actually amplitudes of deformations are defined. As a result of investigations there are determined dependences to obtain amplitudes of deformations, mean-square values of oscillation speeds affecting errors at parts machining on boring lathes.

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Lysov, V. E., and S. I. Zakharov. "Spindle motion in coordinate-boring machine along vertical guidepieces." Russian Engineering Research 29, no. 2 (2009): 201–4. http://dx.doi.org/10.3103/s1068798x09020208.

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4

Long, Y., X. Zhibing, L. Xian, N. Juntao, and R. Sebastian. "Application of super large and deep diameter assembly shafts in soft soil layers." IOP Conference Series: Earth and Environmental Science 1333, no. 1 (2024): 012053. http://dx.doi.org/10.1088/1755-1315/1333/1/012053.

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Abstract Considering the background of the Shanghai Jing’an Smart Garage Project, first, we introduced the world’s largest vertical shaft boring machine, which was suitable for vertical shaft excavation of diameter 12∼23 m. Then, we expounded the design points and key technologies of super large and deep diameter assembly shafts in soft soil layers. Finally, we verified the applicability of the vertical shaft boring technology in soft soil layers in Shanghai through on-site measurement results. It was observed that this technology had a minimal impact on the surrounding environment, indicating

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Ghosh, Abhijit, and S. K. Majumdar. "Modeling failure types and failure times of turning and boring machine systems." International Journal of Quality & Reliability Management 27, no. 7 (2010): 815–31. http://dx.doi.org/10.1108/02656711011062408.

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Y. Y. Shayakhmetov, Y. T. Abilmazhinov, D. K. Dukenbayev, S. S. Shakhova, and R. A. Sovetbayev. "ALGORITHM FOR PREDICTING THE ROUGHNESS OF THE INNER SURFACE DURING TURNING PROCESS." Science and Technology of Kazakhstan, no. 4,2023 (December 29, 2023): 100–109. http://dx.doi.org/10.48081/wuty7402.

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The article analyzes the main technological factors affecting the quality of parts, specifically the quality of the treated surface or the roughness of the surface of the part. Turning (boring) was considered as an example, and a number of measures aimed at improving the quality of the surface at the design stage were also proposed. A simulation stochastic model of surface roughness shaping during surface turning was proposed. Based on this model, an algorithm and a computer program were developed to calculate the roughness at the design stage. The initial data for modeling are the main angle

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Peterka, Jozef, Wallyson Thomas De Silva, Róbert Straka, Tomáš Vopát, Jakub Hrbál, and Michaela Kritikos. "Analysis of form Error and Roughness of Hardened Steel Workpieces Internally Turned with Different Tools in Long Overhangs." Research Papers Faculty of Materials Science and Technology Slovak University of Technology 30, no. 50 (2022): 21–29. http://dx.doi.org/10.2478/rput-2022-0003.

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Abstract Internal turning process is a very important and widely used process for enlarging and finishing holes. Especially for the components that work with external members, this operation needs to assure surface and geometric quality. In that case, the correct definition of working parameters will directly contribute to the quality of component. Aim of the current research was to analyse the form error and the roughness of workpieces submitted to internal turning process using boring bars in long overhangs with three different internal tools (steel, carbide and antivibrating tool). For the

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Gustina, Gustina, Gustina Gustina, Dina Satriani, and Vina Vijaya Kusuma. "ANALISA KERUSAKAN MESIN CNC VERTICAL TURNING LATHE DENGAN MENGGUNAKAN METODE FAILURE MODE AND EFFECT ANALYSIS." Jurnal Ilmiah Sains dan Teknologi 4, no. 2 (2020): 96–108. http://dx.doi.org/10.47080/saintek.v4i2.998.

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PT X is a manufacturing company that produces high-precision components, using 13 units of CNC machines as production tools. The target of achieving technical availability for each machine unit is at least 85% in one year. One of the machine units, namely the CNC vertical turning lathe machine in this company, was only able to reach 64% of the technical availability value due to the impact of the damage. This study aims to determine the causes of component failure in machine units that have low technical availability, namely the CNC vertical turning lathe, using the Failure Mode and Effect Ana

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Mareš, Martin, Otakar Horejš, and Jan Hornych. "Thermal Error Minimization of a Turning-Milling Center with Respect to its Multi-Functionality." International Journal of Automation Technology 14, no. 3 (2020): 475–83. http://dx.doi.org/10.20965/ijat.2020.p0475.

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Achieving high workpiece accuracy is a long-term goal of machine tool designers. Many causes can explain workpiece inaccuracy, with thermal errors being the most dominant. Indirect compensation (using predictive models) is a promising thermal error reduction strategy that does not increase machine tool costs. A modeling approach using transfer functions (i.e., a dynamic method with a physical basis) has the potential to deal with this issue. The method does not require any intervention into the machine tool structure, uses a minimum of additional gauges, and its modeling and calculation speed

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Jomaa, Walid, Julie Levesque, and Augustin Gakwaya. "Optimization of Precision Boring Conditions to Enhance the Surface Integrity of a Landing Gear Component." Defect and Diffusion Forum 441 (March 26, 2025): 29–37. https://doi.org/10.4028/p-6r9nxi.

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Boring process, also referred to internal turning, is commonly used to machine critical features of landing gear components like struts, brackets, and main cylinders. Over the past years, extensive research efforts have addressed the stability of the process by developing instrumented boring bars and advanced monitoring techniques. However, although the surface integrity characteristics, particularly the residual stresses, are crucial for structural components, it hasn’t been considered and its evolution over the boring conditions still not well understood. Hence, the present paper proposes a

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Mares, M., and O. Horejs. "ENHANCEMENT OF SPECIALISED VERTICAL TURNING LATHE ACCURACY THROUGH MINIMISATION OF THERMAL ERRORS DEPENDING ON TURNING AND MILLING OPERATIONS." MM Science Journal 2021, no. 3 (2021): 4512–18. http://dx.doi.org/10.17973/mmsj.2021_7_2021053.

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Achieving high workpiece accuracy is a long-term goal of machine tool designers. There are many causes of workpiece inaccuracy, with thermal errors being the most dominant. Indirect compensation (using predictive models) is a promising strategy for reducing thermal errors without increasing machine tool cost. A modelling approach using thermal transfer functions (a dynamic method with a physical basis) embodies the potential to deal with this issue. The method does not require interventions into the machine tool structure, uses a minimum of additional gauges and its modelling and calculation s

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Bohdanov, O., and V. Grigorenko. "Using applied program packages in determining optimum cutting modes." Collection of Research Papers of the National Mining University 72 (March 2023): 194–201. http://dx.doi.org/10.33271/crpnmu/72.194.

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Purpose. Comparison of the functionality of application program packages when determining optimal cutting modes during mechanical processing. Creation of a mathematical model with technological limitations when boring a shaft in one pass and carrying out calculations. The methods. Research methods were based on the principles of optimization of cutting processes, the theory of cutting and cutting tools, standard methods of determining correction factors were used when creating technological limitations. The smallest machine processing time is chosen as the objective function. Using the functio

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Svinin, V. M., V. A. Ushakov, A. G. Tikhonov, A. S. Pyatykh, R. V. Kononenko, and А. E. Rodygina. "Dynamometric cutting tool." iPolytech Journal 27, no. 2 (2023): 263–83. http://dx.doi.org/10.21285/1814-3520-2023-2-263-283.

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The aim was to develop, manufacture and test a technically simple dynamometer for monitoring the cutting process during boring and turning. An S20R-SSSCR09 right-hand cutter was selected as a research object. To register the cutting force and vibration movements of the cutter tip in tangential and radial directions, the cutter was equipped with four KF5P1-10-400-A-12 strain gauges mounted according to a half-bridge scheme. The bending stiffness of the cutter in two directions was measured by a DOU-3-01 compression dynamometer and a DDP-10A dial indicator. The cutter natural frequency was deter

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Wu, Yu Hou, Jian Sun, Hong Sun, Albert J. Shih, and X. Q. Zhao. "Design and Simulation of the Hydraulic System for the Disc Cutter of the Rock Hob Test-Bed." Key Engineering Materials 499 (January 2012): 51–55. http://dx.doi.org/10.4028/www.scientific.net/kem.499.51.

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Rock tunnel boring machine is one of the main machineries and equipments for underground engineering, and the failure of its disc cutter is the main failure form of this machinery. The experiment on the failure and wear of the disc cutter is difficult. In this paper, a rock hob test-bed is designed, and the hydraulic-driven system of its disc cutter of rock hob test-bed is simulated; the effect of load and flow rate of hydraulic oil in this hydraulic system on characteristics of this disc cutter system is analyzed. The results show that the vertical movement speed of disc cutter is directly pr

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15

Sun, Wei-Heng, and Syh-Shiuh Yeh. "Using the Machine Vision Method to Develop an On-machine Insert Condition Monitoring System for Computer Numerical Control Turning Machine Tools." Materials 11, no. 10 (2018): 1977. http://dx.doi.org/10.3390/ma11101977.

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This study uses the machine vision method to develop an on-machine turning tool insert condition monitoring system for tool condition monitoring in the cutting processes of computer numerical control (CNC) machines. The system can identify four external turning tool insert conditions, namely fracture, built-up edge (BUE), chipping, and flank wear. This study also designs a visual inspection system for the tip of an insert using the surrounding light source and fill-light, which can be mounted on the turning machine tool, to overcome the environmental effect on the captured insert image for sub

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., Vipin, R. S. Mishra, and Ranganath M. S. "Optimization of Machining cost and time in Heavy Machining Operation." International Journal of Advance Research and Innovation 2, no. 3 (2014): 160–64. http://dx.doi.org/10.51976/ijari.231424.

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Investigation has been done to determine the optimal machining cost and time parameters for multi-pass operations with carbide tool (P-40) on cast steel material. The experiments were carried out on double column heavy duty turning and boring machine and were analyzed. The temperature, cutting force, surface roughness and tool life equations were obtained in terms of speed, feed and depth of cut. The expressions so developed were used to further optimize the numbers of tool passes to minimize the cost and time.

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Nakaminami, Masamitsu, Tsutomu Tokuma, Kazuhiko Matsumoto, Sachinori Sakashita, Toshimichi Moriwaki, and Keiichi Nakamoto. "Optimal Structure Design Methodology for Compound Multiaxis Machine Tools - II - Investigation of Basic Structure -." International Journal of Automation Technology 1, no. 2 (2007): 87–93. http://dx.doi.org/10.20965/ijat.2007.p0087.

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Compound multiaxis machine tools are used to machine high-value-added parts through integrating milling and turning. Compound machine tools are generally structured based on a conventional NC lathe by incorporating Y axis and automatic tool changer (ATC) components for milling. Due to complexity of the structure and functional versatility required for a compound machine tool, accuracy, productivity, and return on investment (ROI) must be improved over conventional NC lathes and machining centers. In the sections that follow, we discuss design methodology for compound multiaxis machine tools, f

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Arsecularatne, J. A., and P. Mathew. "An Optimal Tool Replacement Strategy for Computer Numerical Controlled Turning Centres." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 209, no. 6 (1995): 481–90. http://dx.doi.org/10.1243/pime_proc_1995_209_112_02.

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For a computer numerical controlled (CNC) turning centre with a multi-station tool turret, this paper describes a tool replacement strategy for tools used for both rough and finish turning, boring and facing operations as well as other end operations which include drilling, grooving, threading and parting-off. The method ensures a convenient replacement strategy where tools in the machine turret are replaced after machining integer multiples of an optimum number of components. This optimum number of components is determined so that the total cost due to tools and tool changing time is minimize

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Luo, Qing Hai, Wen Wu Peng, and Peng Fei Zhang. "Structure Improvement of the Principal Axis of a CNC Vertical Boring-Milling Machine." Advanced Materials Research 199-200 (February 2011): 1320–23. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.1320.

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The rigidity of the principal axis of a CNC vertical boring-milling machine was analyzed, and the belt tension and end deformation were also calculated. A project was proposed to improve the structure of the principal axis for finish machining. After the discharge belt pulley was applied on the principal axis, the force transmission and the rigidity of principal axle system were improved considerably. The design and process means were proposed for the three added parts of the improved structure. The improved structure is simplified, secure and low-cost. The machining precision was increased, a

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20

Wang, Huabei, Liping Xu, Xiaolei Zhou, Bingjing Guo, and Liujin Cai. "Research on the Attitude Control Strategy of TBM Digging with V-Shaped Propulsion System." Applied Sciences 15, no. 4 (2025): 2244. https://doi.org/10.3390/app15042244.

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To address the challenges in controlling a Tunnel Boring Machine (TBM) equipped with a V-type propulsion system during excavation, a digging attitude control strategy based on a nonlinear controller is introduced. First, the mathematical models of the V-type propulsion hydraulic system and the propulsion system’s attitude are developed, followed by an analysis of the system’s nonlinearities and susceptibility to strong disturbances. Second, a nonlinear control strategy tailored to the propulsion system’s characteristics is devised to regulate the digging attitude of the V-TBM. Finally, the pro

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Magstr., Tajimuratov Dilmurod Ochilovich, and rahbar: t.f.f.d. (PhD) Axmedov Kamol Ibragimovich Ilmiy. "ANALYSIS OF LATHE-CAROUSEL MACHINE APPLICATION FIELDS." International journal of advanced research in education, technology and management 2, no. 4 (2023): 83–91. https://doi.org/10.5281/zenodo.7840029.

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The vertical lathe of the lathe carousel series is equipped with a top support, a tool magazine and tool heads for automatic tool change, an automated mechanism for fine adjustment of the spindle, and a servo transmission. It is intended for turning and drilling-milling of various products made of ferrous and non-ferrous metals and other materials without changing their surfaces.

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Chinna, Mr P. ">Design of Hydraulic Power Pack for Vertical Turning Lathe Machine." International Journal of Science, Engineering and Technology 13, no. 2 (2025): 1–8. https://doi.org/10.61463/ijset.vol.13.issue2.300.

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Levit, Viktor, Viacheslav Kamenets, and Yurii Mukomel. "PROSPECTS OF USING THE LATEST TECHNOLOGIES OF SHAFT AND WELL CONSTRUCTION FOR THE POST-WAR DEVELOPMENT OF THE COAL INDUSTRY IN UKRAINE." SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”, no. 1(29)2023 (2023): 98–116. http://dx.doi.org/10.31474/2073-9575-2023-1(29)-98-116.

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Purpose Analysis of production experience, scientific and technical developments and assessment of prospects for the use and development of the latest technologies for the construction of vertical mine shafts and wells for the post-war development of the coal industry of Ukraine. Methods. The methods of analysis of the accumulated production experience of drilling shafts and wells, first, in the leading mining countries and in Ukraine, as well as scientific and technical literature, were use. Findings. The classification of technologies of vertical shafts and wells construction methods was con

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Blokhin, D. A., and I. S. Mikhailov. "The study of the dynamic displacement of the table of a jig boring machine under load." Omsk Scientific Bulletin, no. 189 (2024): 66–72. http://dx.doi.org/10.25206/1813-8225-2024-189-66-72.

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The article presents a technique for evaluation dynamic flexibility of the vertical milling machine table, considering the deformations of the supporting system of the machine under the influence of forces equivalent to cutting forces. The vibration exciter in the form of an electric motor with an unbalanced rotor makes it possible to simulate a dynamic load equivalent to the milling process in terms of the modulus of cutting forces and impact frequency, excluding the use of coolant and chip formation. A setup has been developed to create an equivalent dynamic load on the machine tool. The pro

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Ninomiya, Shinichi, Manabu Iwai, Toshiharu Shimizu, Tetsutaro Uematsu, and Kiyoshi Suzuki. "Purification Effect of Micro Bubble Coolant." Advanced Materials Research 76-78 (June 2009): 651–56. http://dx.doi.org/10.4028/www.scientific.net/amr.76-78.651.

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The authors have proposed a new coolant named “micro bubble coolant” in which micro bubbles (20-50µm in diameter) are included. In the previous study, it was clarified that the tool life is improved by applying this new coolant to various machining such as boring, turning and grinding. This paper deals with purification effect of the micro bubble coolant. It has been found from the experiments that bacteria which cause putrefaction of the conventional water soluble coolant are eliminated by generating micro bubbles in the coolant. It has also been clarified that the micro bubble coolant isolat

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Petronio, Lorenzo, Flavio Poletto, and Andrea Schleifer. "Interface prediction ahead of the excavation front by the tunnel-seismic-while-drilling (TSWD) method." GEOPHYSICS 72, no. 4 (2007): G39—G44. http://dx.doi.org/10.1190/1.2740712.

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Predicting geologic interfaces ahead of a tunnel front is of major importance when boring tunnels. Unexpected variations in ground properties can cause problems for tunnel-boring advance and risk for human safety. The tunnel-seismic-while-drilling (TSWD) method utilizes noise produced during mechanical excavation to obtain interpretable seismic data. This passive method uses accelerometers mounted on the advancing tunnel-boring machine (reference signals) together with seismic sensors located along and outside the tunnel. Data recorded by fixed sensors are crosscorrelated with the reference si

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Mr., Taware Sachin B., and Mundhe Vyankatesh L. Prof. "A Review on use of Damping Materials to Reduce Vibrations during Turning in Lathe Machine." International Journal of Trend in Scientific Research and Development 2, no. 1 (2017): 1243–46. https://doi.org/10.31142/ijtsrd8218.

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Vibration in metal cutting is familiar to every machine tool operator. This phenomenon is recognized in operations such as internal turning, threading, grooving, milling, boring and drilling, to which there are several reasons why this problem occurs. Some are related to the machine tool itself, to the clamping of the tool, the length and diameter of the tool holder and the cutting data to be used. More of this will be discussed later. There will be several different actions to consider when solving this problem. Reducing the process parameters is one such consideration, however, this could ha

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Beloev, Ivan, Volodymyr Kuvachоv, Valerii Adamchuk, and Zinoviy Ruzhylo. "Analytical study of the turns of bridge machines." Naukovij žurnal «Tehnìka ta energetika» 14, no. 3 (2023): 9–20. http://dx.doi.org/10.31548/machinery/3.2023.09.

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The research is devoted to the topical problem of the efficiency of turning wide-span bridge machines in the track farming system. The research aims to study the curvilinear movement along the soil traces of a constant technological track of an arbitrary multi-supported bridge machine, considering its design and method of turning, parameters, modes of movement and loading. Experimental studies were conducted, involving the use of a modern strain track and specially designed equipment for electrical measurements of non-electrical quantities. The processing of research data was carried out on a

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Khan, Dr Imran A., Ghanshyam Patel, Prajwal Barse, Harshit Kunwar, Roshan Satpute, and Manish Hiraskar. "3D Modelling of Scrap Minimizing Machine." International Journal for Research in Applied Science and Engineering Technology 10, no. 4 (2022): 1728–32. http://dx.doi.org/10.22214/ijraset.2022.41604.

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Abstract: Ill as taking care of and transportation of metal chips. Endeavours have been taken to guarantee an effective squander the board framework in shop floors, with least utilization of space and energy with regards to discarding Meta. There are a few modern creation processes that include mechanical machining of cast parts by different activities like turning, processing, and boring. Metal Chips, particularly of aluminium, gentle steel and cold-moved carbon steel, and so on. The assortment, stockpiling, and transportation of metal chips are a significant angle during the time spent reusi

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Yamazaki, Nobutoshi, and Takehiro Nishiie. "Development of an Omnidirectional Rolling Leg Mechanism for Application in a Locomotion Machine." Journal of Robotics and Mechatronics 12, no. 2 (2000): 78–83. http://dx.doi.org/10.20965/jrm.2000.p0078.

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The wheelchair is a superior assistive apparatus in open and flat spaces; however, in Japanese style houses, the conventional wheelchair has several drawbacks, including difficulty in negotiating tight corners and moving over obstacles such as thresholds, as well as damage to delicate surfaces such as Tatami mats. Therefore, we developed a new six-legged mobility assisting machine. The individual legs are designed to have a semi-circular arced sole, which can be made to roll like a wheel in the stance phase using a cam and crank mechanism. Therefore, the machine can move efficiently without ve

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Narimani Dehnavi, Roohollah, and Michael Berner. "Analysing the Feasibility of a Full-face Cutting Machine for the Robominers Project." BHM Berg- und Hüttenmännische Monatshefte 166, no. 2 (2021): 64–69. http://dx.doi.org/10.1007/s00501-021-01082-6.

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AbstractSeveral methods of excavation have previously been studied to choose the most suitable approach to be applied in the Robominers project. Compared to drilling and blasting and partial-face cutting, the full-face cutting option is regarded as one of the methods which can offer, among others, high advance rates and a safer working environment for the machinery. Current technologies of these methods, however, suffer from several limitations, such as the inability to bore very hard rocks, significant lack of geometrical flexibility in mine working areas, and low mobility due to large and he

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Yamaguchi, Takeshi, Yuya Takahashi, and Yoshihiro Sasaki. "Prediction of Three-Directional Ground Reaction Forces during Walking Using a Shoe Sole Sensor System and Machine Learning." Sensors 23, no. 21 (2023): 8985. http://dx.doi.org/10.3390/s23218985.

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We developed a shoe sole sensor system with four high-capacity, compact triaxial force sensors using a nitrogen added chromium strain-sensitive thin film mounted on the sole of a shoe. Walking experiments were performed, including straight walking and turning (side-step and cross-step turning), in six healthy young male participants and two healthy young female participants wearing the sole sensor system. A regression model to predict three-directional ground reaction forces (GRFs) from force sensor outputs was created using multiple linear regression and Gaussian process regression (GPR). The

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Widiyawati, Sri, Oyong Novareza, Dwi Hadi Sulistyarini, and Wisnu Wijayanto Putro. "Pengaruh Penggunaan Cairan Pendingin (Coolant) terhadap Keausan Pahat Bubut HSS." Jurnal Rekayasa Mesin 11, no. 3 (2020): 467–75. http://dx.doi.org/10.21776/ub.jrm.2020.011.03.19.

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Lathe Machine can use for several kinds of the process such as turning, drilling, boring, tapering, and threading. The lathe machine process requires some interaction between processing material with the chisel. Time processing that reaches the worn-out limit is likely called chisel life. One of the factors that affected chisel worn-out is the use of coolant. Therefore researched the effect of one of the variable process that is coolant to HSS Carbide worn-out chisel to predict the lifetime of it. This research was conducted three times without using a coolant, using a coolant ratio of 1:30, a

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Sukharev, R. Yu. "Mathematical models of wheel turning processes road construction vehicles." Nauchno-tekhnicheskiy vestnik Bryanskogo gosudarstvennogo universiteta 7, no. 3 (2021): 259–69. http://dx.doi.org/10.22281/2413-9920-2021-07-03-259-269.

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The construction of highways is a complex, multi-stage process. Most of the construction works are carried out according to the projects of structures and quite high requirements are imposed on the quality of execution. The fulfillment of these requirements is associated with great difficulties in view of the limited accuracy of the road construction machine itself, the lack of on-board control systems and the limited capabilities of the human operator, who is unable to determine the required exact parameters of the structure being built «by eye». To meet the requirements, three-dimensional co

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Li, Yue Qiang, and Ya Ke Liu. "Design Model of the Tunnel Axis and its Algorithm Implementation." Applied Mechanics and Materials 103 (September 2011): 570–77. http://dx.doi.org/10.4028/www.scientific.net/amm.103.570.

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With a large number of construction projects building in urban rail construction, it’s very necessary for researching on the construction axis. Construction axis of the subway is consisted of line segment, circular arc segment and transition curve. The paper introduces design models and algorithms of the tunnel boring machine (TBM) axis (DTA). By analyzing the DTA characteristics of each curve, summing up their general characters, we ultimately make a unified common algorithm and geodetic coordinate calculation model of the design axis in horizontal and vertical planes. It will be very useful

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Liu, De Ping, Jie Li, Yu Feng Su, and Yu Ping Wang. "Temperature Field Modeling and Thermal Deformation Analysis of Turning and Milling Machining Center." Advanced Materials Research 189-193 (February 2011): 1986–90. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.1986.

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Taking the high-speed CX series vertical milling compound machining center of CX8075 produced by Anyang Xinsheng Machine Tool Co., Ltd. as example, the machine three-dimensional simplified model is established, the source of the heat and the distribution of the important hot-points are analyzed, the machine temperature field distribution is derived which lays a foundation for the thermal error compensation. Taking into account the moving part-saddle of the machining center, its mathematic model is obtained, the important hot-points are studied, the thermodynamic parameters are determined. Base

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Souza, Leticia Cardoso, Joel Lima da Silva Junior, João Paulo Ferreira Rufino, Sebastião Corrêa de Nazaré, and Marco Antonio de Freitas Mendonça. "Efficiency of ozone compared to commercial sanitizers for hatching eggs from older breeders." Acta Scientiarum. Animal Sciences 46 (August 16, 2024): e65262. http://dx.doi.org/10.4025/actascianimsci.v46i1.65262.

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This study aimed to evaluate the potential of ozone as a sanitizer compared to commercial sanitizers for hatching eggs stored in hatching machines using different turning systems. The eggs (n = 120) were distributed in a completely randomized design using a factorial scheme (6x2) where the treatments were constituted by different sanitizers applied (non-treated eggs, Ozone 1.6 mg L-1, Ozone 3.2 mg L-1, Cyphenothrin, UVC, and paraformaldehyde) and two turning systems (vertical and horizontal) with 10 eggs each, with the egg considered as a replicate. Data collected were subjected to the Tukey t

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Mei, Yongbing, Yimin Xia, Laikuang Lin, Yongliang Cheng, and Cong Qian. "Influence Factors of Vibration Response on Supporting-Thrusting System of Tunnel Boring Machine." Mathematical Problems in Engineering 2020 (July 29, 2020): 1–10. http://dx.doi.org/10.1155/2020/4650153.

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A supporting-thrusting system is the main load-bearing component of a tunnel boring machine (TBM) and the centralization of vibration response under TBM working. This study combines the structure and working principle of the supporting-thrusting system. Based on the vibration theory and test results at a construction site, the main influence factors of the vibration response of the supporting-thrusting system are the main beam structure, the characteristic parameters of advance cylinder, and the support pressure to surrounding rock. Under the different influence factors, the vibration response

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Park, Byungkwan, Soon-Wook Choi, Chulho Lee, et al. "A Geometric Model for a Shield TBM Steering Simulator." Applied Sciences 13, no. 18 (2023): 10087. http://dx.doi.org/10.3390/app131810087.

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This study aimed to simulate curved excavation using a tunnel boring machine (TBM) steering system based on the proposed mathematical methodology applied in a TBM simulator. We introduce the concept and mechanism of the TBM steering system and describe the mathematical formulae used for simulating curved excavation. Curved excavation in the top- right direction was simulated using a Python program to verify the mathematical formulae. In addition, Python simulations were undertaken to determine the effects of horizontal and vertical articulation angles on pitching and yawing angles. Finally, th

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Zhu, Xiang Heng, Yi Min Xia, Tao Ouyang, and Kai Yang. "Distribution Law of Excavating Load of TBM Disc Cutter and Cutterhead." Applied Mechanics and Materials 615 (August 2014): 22–26. http://dx.doi.org/10.4028/www.scientific.net/amm.615.22.

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Cutterheads and disc cutters are the key components of Tunnel Boring Machine (TBM) used to fulfill the rock-breaking task. In order to study the variation and distribution law of cutting forces induced by disc cutters on TBM cutterhead, a finite element model of rock-breaking process is established based on the extended Drucker-Prager yield criterion for rock and then the excavating process of cutterhead is simulated. The simulation results show that: in the rock fragmentation process, the rock-breaking forces are step changing; with the increase of installation radius, the vertical forces of

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Adamchuk, V., V. Bulgakov, V. Nadykto, and I. Golovach. "Theory of motion controllability of a wheel machine-tractor aggregate." Agricultural Science and Practice 3, no. 2 (2016): 3–10. http://dx.doi.org/10.15407/agrisp3.02.003.

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Aim. To obtain analytically new dependencies, determining the indicator of motion controllability of a wheel machine-tractor aggregate, taking into consideration external forces, constructive and kinematic parameters of the aggregate while the latter moves in the transport mode. Methods. The methods of tractor and vehicle theories, theoretical mechanics, the theory of dynamic stability, and methods of numeric computer calculations. Results. A new theory of motion controllability of a wheel machine-tractor aggregate during its non-linear mo- tion along the surface of the soil at an angle to the

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KARAZEY, VITALIY, KATERYNA SOKOLAN, ANDRIY KUSHNIRCHUK, and OLEKSIY KALININ. "MODERNIZATION OF THE TURNING TABLE FOR NC MACHINE TOOL." Herald of Khmelnytskyi National University 303, no. 6 (2021): 142–46. http://dx.doi.org/10.31891/2307-5732-2021-303-6-142-146.

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The article envisages the increase in the efficiency of NC machine tool due to the use of an upgrades design of turning table for installation and fixing of workpieces, the use of which will lead to improved productivity of machining. With the help of a turning table it is possible to perform machining of workpieces of different shapes from several sides without resetting, and to rotate the workpiece in different coordinates to carry out other technological transitions. Such tables are widely used un multi-position hole machining, milling planes on drilling and milling machines. The workpiece

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Rachmat, Asep, and Muhammad Qori Alfaruq Qori. "PROSES PEMBUATAN STEP SHAFT PADA MIXER VERTICAL." SEMINAR TEKNOLOGI MAJALENGKA (STIMA) 6 (November 21, 2022): 145–53. http://dx.doi.org/10.31949/stima.v6i0.724.

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 Mixing Material (Mixing) is done in the world and everyday life. One of the many used equipment is a vertical shaft mixer (Vertical Stirred Mixer). Mixed materials are generally relatively thick liquid. Other materials processed are microbial fermentation, sand, medicinal material and granular powder. The process of mixing materials in the vertical shaft mixer is a major operating unit that is carried out for the process of chemical products, drugs, paint and paper processing, food processing and water management and activities in mining. The process of making a vertical axle using a co

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Indrawan, Rizal, Salsabila Diya Uhaque, Dhika Aditya Purnomo, Fais Hamzah, and Bayu Wiro Karuniawan. "Design of Bearing Housing JIG and Fixture for Machining Process in Vertical CNC Turning Machine." Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin 9, no. 3 (2024): 121. http://dx.doi.org/10.55679/enthalpy.v9i3.49007.

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Bearing housing merupakan salah satu produk yang diproduksi di PT. X, yang memiliki target produksi sebesar 150 pcs/bulan. PT. X adalah salah satu perusahaan manufaktur terbesar di indonesia yang bergerak di bidang pengecoran pengecoran investasi dan permesinan canggih. Proses pembubutan untuk rumah bearing memiliki beberapa kelemahan, yaitu membutuhkan lebih banyak mesin bubut CNC untuk memproses setiap bagian rumah bearing. Hal ini menyebabkan proses bongkar muat yang memakan waktu. Selain itu, ada kelemahan lain yang menyebabkan diameter yang tidak konsentris yang akan dianggap sebagai prod

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Allen, R., and K. Huang. "Self-Tuning Control of Cutting Force for Rough Turning Operations." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 208, no. 3 (1994): 157–65. http://dx.doi.org/10.1243/pime_proc_1994_208_074_02.

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Considerable developments have taken place in recent years in the versatility and sophistication of computer numerical control (CNC) controllers. Machine tool control schemes have not, however, advanced to the same extent. Control of the metal cutting process has long been advocated as a goal to pursue to improve productivity, but progress has been slow. This paper introduces a simplified generalized minimum variance approach to self-tuning which shows promise for the adaptive control of metal cutting. An experimental rig is described and the results of tests to adaptively control the vertical

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Bulgakov, Volodymyr, Valerii Adamchuk, Volodymyr Nadykto, Volodymyr Kyurchev, and Ladislav Nozdrovický. "Theoretical Consideration of The Controllability Indicator of Machine-Tractor Unit Movement." Acta Technologica Agriculturae 20, no. 1 (2017): 11–18. http://dx.doi.org/10.1515/ata-2017-0003.

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Abstract The paper is focused on the issues of controllability of machine-tractor units based on wheel-type tractors during their non-straight driving on the soil surface, which is positioned at an angle to the horizon. There were obtained analytical expressions for the determination of the actual indicator of control λd, including both the power and the design parameters of the machine-tractor unit, which affect the abovementioned indicator in the longitudinal vertical plane. These expressions are obtained for the tractor driving on both road and also driving during field operation. In additi

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Schwär, Daniel, Germán González, Eric Segebade, Frederik Zanger, and Michael Heizmann. "Evaluation of the acoustic emission caused by the chip segmentation frequency during machining of titanium alloy." tm - Technisches Messen 87, no. 11 (2020): 714–20. http://dx.doi.org/10.1515/teme-2020-0056.

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AbstractThis work investigates the relationship between acoustic emission and chip segmentation frequency of Ti-6Al-4V at the external longitudinal turning process. Therefore, several sensors like structure borne sensors, microphones and a force dynamometer have been installed in a vertical turning machine. To induce a change of the segmentation frequency, several experiments with different feed rates have been carried out. From each experiment the acoustic emissions have been recorded and the generated chips have been analyzed. Since the chips get stretched or compressed during the chip forma

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Wang, Y. H., C. C. Lam, and M. H. Lok. "Prediction of ground surface settlements by analytical and finite element methods." IOP Conference Series: Earth and Environmental Science 1333, no. 1 (2024): 012033. http://dx.doi.org/10.1088/1755-1315/1333/1/012033.

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Abstract The soil surrounding the excavation of shallow tunnels may experience destructive deformation near the tunnels. Particularly in densely populated areas where land resources are scarce, ground subsidence caused by tunnel excavation, which in turn affects surrounding structures, deserves more attention. Over the past few decades, various research methods for predicting the maximum vertical ground surface settlement have been proposed. In this study, an empirical estimation method, an analytical technique for evaluating ground movements, and a numerical simulation method using Plaxis 2D,

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Wang, Guofeng, Fayi Deng, Kaifu Ren, Yougqiao Fang, and Haiyan Xu. "Finite Element Analysis of the Excavation Stability of Deep and Large Ventilation Shafts of Zimuyan Tunnel Using the Raise Boring Machine Method in a Karst Area." Buildings 15, no. 2 (2025): 287. https://doi.org/10.3390/buildings15020287.

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The excavation of deep and large vertical shafts in karst areas can easily lead to sudden changes in the stress field of the surrounding rock and even cause disasters such as cave collapses. To investigate the influence of karst areas on the stability of deep and large vertical shaft excavation using the raise boring machine (RBM) method, based on the ventilation vertical shaft project of Zimuyan Tunnel, the influence of karst caves on the displacement and stress fields of the surrounding rock during the construction stage of the vertical shaft was analyzed using the finite element simulation

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Ryzhov, Sergey, Tatiana Finochenko, Alexander Chukarin, and Ivan Yaitskov. "MODEL VALIDATION OF THE ACOUSTIC SYSTEMS "TOOTH WHEELS-MANDRELS" OF THE VERTICAL GEAR GENERATOR AND GEAR SHAPING MACHINES." Akustika, VOLUME 41 (2021): 90–93. http://dx.doi.org/10.36336/akustika20214190.

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The research paper is devoted to one of the engineering characteristics of the machine tool equipment, which largely determines the safe working conditions for machine operators and competitiveness that is the sound pressure levels at workplaces. The problem of reducing noise levels to sanitary standards at the workplaces of the machine operators is relevant for mechanical engineering and has an important scientific, engineering and socio-economic significance and it corresponds to the priority and advanced scientific directions of the Strategy for scientific and technological development of t

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