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Journal articles on the topic 'Milling machine construction'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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1

Buyuksahin, Utku. "A New Approach to CNC Milling Machine Spindle Design." Advanced Materials Research 445 (January 2012): 201–6. http://dx.doi.org/10.4028/www.scientific.net/amr.445.201.

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During the technological development, some equipments remain mostly the first days design besides most of others change repeatedly. CNC Milling machines spindle design is one of these which remains mostly the same. With the existing design, in order to obtain the desired torque for metal milling process, the body of the spindle is made huge and heavy which causes the whole machine body to be constructed huge and heavy. In this study a new approach to CNC Milling Machine Spindle Design is made. The design changes the hob to be held indirectly instead of to be held directly at the lower end of t

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2

Zhadanovsky, Boris. "Mechanical processing of concrete and reinforced concrete with diamond tool." MATEC Web of Conferences 193 (2018): 03013. http://dx.doi.org/10.1051/matecconf/201819303013.

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The technology and organization of construction production using high-performance machines equipped with a diamond tool for machining concrete, concrete and stone surfaces is considered. Various installations, machines and mechanisms with a diamond tool for milling, grinding, drilling and cutting surfaces are presented. The design decisions of the grinding machine MSh-300, installations for machining the surfaces of facing slabs, a high-performance drilling machine and a concrete surface milling cutter are considered. An analysis of domestic and foreign installations has been carried out, whic

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3

jito, Sar, Brandon Lau, Rasidi Ibrahim, and Zazuli Mohid. "Structure Analysis of Micro-Milling Machine Construction Frame Design." International Journal of Engineering Trends and Technology 69, no. 1 (2021): 205–12. http://dx.doi.org/10.14445/22315381/ijett-v69i1p231.

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4

Zhang, Xiao Xia, Zhi Chao Wang, and Hong Yang Chen. "Optimization of Milling Parameters for Titanium Alloys Based on Support Vector Machine (Machine Learning) and Ant Colony Optimization Algorithm." Key Engineering Materials 770 (May 2018): 262–67. http://dx.doi.org/10.4028/www.scientific.net/kem.770.262.

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In this paper, the titanium alloy milling process is analysized by finite element method, and the processing quality of this materials will be affected by the milling force. A milling force prediction model was established based on support vector machine (SVM) and ant colony optimization (ACO) for titanium alloy milling process cutting parameters. The main feature of this model design methodology is to hybridize the solution construction mechanism of ant colony optimization (ACO) with support vector machine (SVM) regression based on HYPERLINK "https://cn.mathworks.com/discovery/supervised-lear

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Boral, Piotr. "The design of the CNC milling machine." MATEC Web of Conferences 254 (2019): 01003. http://dx.doi.org/10.1051/matecconf/201925401003.

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CNC machine tools are currently predominating in the machine-building industry. Generally, these machine tools are equipped with control systems supplied by the world's leading manufacturers, such as Siemens, Fanuc or HeidenHein, and are very expensive. In parallel, many cheap amateur and semi-professional CNC machine tool solutions are being developed. Below, a CNC milling machine of welded construction is described, which is intended to be, at the same time, a test stand. The design of the milling machine is based on steel closed sections of a large cross-section and a big wall thickness. Th

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6

Gavrilin, Alexey, Boris Moyzes, Kirill Kuvshinov, Maxim Vedyashkin, and Olga Surzhikova. "Determination of Optimal Milling Modes by Means of Shock-Vibration Load Reduction on Tool and Peak-Factor Equipment." Materials Science Forum 942 (January 2019): 87–96. http://dx.doi.org/10.4028/www.scientific.net/msf.942.87.

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Vibrodiagnostics of metal-cutting machines is an efficient method to increase reliability of all elements of the technological system «machine tool-device-instrument-detail». The development of vibrodiagnostic methods is especially important for milling metal-cutting machines which operate in intermittent cutting mode and are exposed to shock-vibration loads. One of the trends in the development of metal cutting equipment is to increase its productivity by expanding the ranges of cutting modes. Increase in the combination of cutting modes leads to increased probability of coincidence of the na

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7

Pan, Xue Qin, Na Zhu, Yu Cai Dong, Cui Xiang Liu, Min Lin, and Xiao Yan Wang. "A Prediction Model for Surface Roughness in Milling Based on Projection Pursuit Regression." Applied Mechanics and Materials 312 (February 2013): 143–47. http://dx.doi.org/10.4028/www.scientific.net/amm.312.143.

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A novel prediction model for surface roughness based on Projection Pursuit Regression was proposed in this paper. Based on the new model, the effects of milling parameters on surface roughness in milling can be predicted, and the predicted value of surface roughness in the whole working range can be reached with the limited test data, thus the variation law of quality of machined surface following milling parameters can be obtained. Compared with the least square support vector machine, it can be revealed that on the base of the same samples, the construction speed of this Projection Pursuit R

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Gücüyener, İsmet, and Erdal Emel. "A Fiber-Optic Bending Sensor for the Vibration Monitoring of CNC Face-Milling Machine." Solid State Phenomena 147-149 (January 2009): 627–32. http://dx.doi.org/10.4028/www.scientific.net/ssp.147-149.627.

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Vibration measurement of CNC milling is one of the used techniques for prediction of tool wear. Monitoring of tool wear is very important since a worn tool will affect machine and workpiece either. We developed a fiber-optic sensor for spindle vibration of CNC face-milling machine. The sensor is based on monitoring loss of light from the fiber core. For this sensor a laser light transmitter circuit, a sense plane construction, and a light receiver circuit are designed. Designed fiber-optic sensor is tested on Taksan TMC 650V face-milling machine. Obtained signals from this sensor is investigat

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9

Zhang, Rong, and Ya Ping Wang. "On-Machine Measurement System Implemented Based on Fanuc CNC System Using a Touch Trigger Probe." Advanced Materials Research 1016 (August 2014): 3–7. http://dx.doi.org/10.4028/www.scientific.net/amr.1016.3.

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This paper aims to implement an OMM (on-machine measurement) system using a touch trigger probe installed on the spindle of the milling machine with Fanuc 0i-mc CNC system. The CNC used in the milling machine is Fanuc 0i-mc system. The hardware system configuration for OMM and its software were both presented. The software is composed of several modules, and the most significant one is for generating measurement program based on CAD model of workpiece. This paper mainly presents the specific construction of the measurement macro for Fanuc system.

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10

Ding, Guo Fu, X. F. Cheng, R. Li, J. J. Liu, and R. Mi. "Research Progress on Digital Design and Manufacturing for Solid Carbide End Mill." Key Engineering Materials 499 (January 2012): 289–94. http://dx.doi.org/10.4028/www.scientific.net/kem.499.289.

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This paper summarizes the research progress of integral end milling cutter and series of common theories and methods: the construction in the reasoning machine of end milling cutter structure parameters, obtained structure parameter according to the type and the main design parameters of end milling cutter; General the mathematical model and the geometric modeling method of end milling cutter ,based on structure parameters that get from reasoning machine, get 3D parametric model which include all structure information and manufacturing characteristic of end milling cutter; the design technolog

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11

Gürbüz, Riza. "Mechatronics Approach for Desk-Top CNC Milling Machine Design." Solid State Phenomena 144 (September 2008): 175–80. http://dx.doi.org/10.4028/www.scientific.net/ssp.144.175.

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The marriage of computer, electronic technology and traditional machining disciplines has given birth to revolutionary new disciplines, Mechatronics. Therefore Mechatronics requires mechanical, electronic and computer knowledge together. The main aim of this article is to present the mechatronics approach for desk-top CNC milling machine design. Construction of computer controlled (CNC) Machine differs greatly from that of conventional machine tools. This difference arises from the requirement of higher performance levels. Machine Structure, guide ways, feed drives, spindle and spindle bearing

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12

Li, Hong Kun, and Peng Shi Zhao. "Milling Stability Lobe Diagram Construction on FV520B Stainless Steel and Experimental Testing Investigation." Applied Mechanics and Materials 437 (October 2013): 586–89. http://dx.doi.org/10.4028/www.scientific.net/amm.437.586.

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This paper investigates the zero-order analytical method to construct milling stability lobe diagram to improve the impeller milling efficiency. It is used to determine FV520B material milling parameters optimization. This method can select the appropriate number of revolutions and the cutting depth processing avoiding chatter occurrence. It can keep the required accuracy and surface quality for the workpiece. At the same time, it improves the safety of the tool and machine reliability. Through experiments data analysis, parameters constructing lobe diagram can be obtained. Different testing p

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13

HTWE, E. E., S. Hatanaka, and T. Akiyama. "Design and Construction of Automized Assembly Application." ASEAN Journal on Science and Technology for Development 29, no. 1 (2012): 21. http://dx.doi.org/10.29037/ajstd.47.

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Nowadays the main stream of current automatic process and assembly is on intermittent transportation. Robot control systems can be divided into motion control and force control depending on the work. Assembly work is necessary to consider the state of force applied by detection of the force or moment on the fingers of the gripper. In this project, four groups designed and developed each one of the stages of the workpieces until the final piece was delivered; it was composed of three different workpieces. The mechanism was designed to set the shaft and fasten the screw into a vacancy in a workp

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14

Yan, Wei, Xian Qi Huang, and Yong Hu. "The Construction of Optimized Model of Milling Process Based on the Pursue of Economy and Profits." Applied Mechanics and Materials 48-49 (February 2011): 1222–26. http://dx.doi.org/10.4028/www.scientific.net/amm.48-49.1222.

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The optimized model of machine tool processing is a typical one of constrained optimized model. This paper investigates the construction of optimized model of milling under a variety of objective or subjective environment, and aims at minimizing the cost and maximizing the profits.

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15

Wang, Li Meng, Xiao Zhou Li, Jin Kai Xu, Lin Lin, Jing Dong Wang, and Zhan Jiang Yu. "Discuss of Structure and Finite Element Analysis of the Ultrasonic Vibration Turn-Milling Machine Tool." Key Engineering Materials 589-590 (October 2013): 740–45. http://dx.doi.org/10.4028/www.scientific.net/kem.589-590.740.

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In this paper, ultrasonic vibration turn-milling machine tool has been designed based on the analysis of processing principle . CATIA is used to generate three-dimensional solid model for the overall layout structure of high speed miniature lathe, while finite element analysis software is used to achieve dynamic performance analysis, so as to obtain each factorial of machine-tool vibration and natural frequency. The results are important to machine optimization and the construction of experimental prototype, and will guide the next work.

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16

WĄSIK, Mateusz, Krzysztof LEHRICH, and Krzysztof LIS. "Optimisation of a Spindle Body Considering the Vibration Prediction of the Entire Milling Centre Construction." Mechanics 27, no. 1 (2021): 62–69. http://dx.doi.org/10.5755/j02.mech.24429.

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Static and dynamic properties of machine tools have a decisive influence on their accuracy. In case of HSM machine tools, the phenomena associated with them are additionally strengthened by high machining parameters. In order to predict a machine tool behaviour at the design stage, it is necessary to use numerical methods to simulate for its simulation. Thanks to the use of this type of software, it is possible to perform the next step, i.e. the optimisation of the structure. In case of machine tools, due to the multiplicity of factors affecting its accuracy, this should be a multicriterial op

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17

Nikishechkin, Petr, Nadezhda Chervonnova, and Anatoly Nikich. "Approach to the construction of specialized portable terminals for monitoring and controlling technological equipment." MATEC Web of Conferences 224 (2018): 01089. http://dx.doi.org/10.1051/matecconf/201822401089.

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The work deals with the features of construction of human-computer interaction to manage the complex process equipment. The mechanism for creating additional portable terminals for monitoring and controlling complex machine tools is presented. A practical example of using the mechanism for creating additional terminal solutions for monitoring and controlling the Quaser MV184P milling machining center is given.

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18

Nowak, Monika, and Agnieszka Terelak-Tymczyna. "Assessment of the safety of use of portable machine tools." Scientific Journal of the Military University of Land Forces 189, no. 3 (2018): 192–205. http://dx.doi.org/10.5604/01.3001.0012.6237.

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The article presents safety issues related to on-site machining with the use of portable machine tools. Their advantage is the possibility of machining elements at places in which they are used. This especially refers to large-size constructions, welded elements and any items whose disassembly is technically difficult. The authors present tasks performed by the operators of portable machining equipment, working conditions, construction and characteristic features of portable machine tools on the example of a portable boring machine, milling machine and flange facing machine. The presented char

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19

Bogoduhov, S. I., E. S. Kozik, E. B. Shvidenko, and B. S. Garipov. "Processing the Working Parts of Tools Used in Construction Industry Using High Energy Methods." Materials Science Forum 992 (May 2020): 647–51. http://dx.doi.org/10.4028/www.scientific.net/msf.992.647.

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This paper considers the effect of hardening of throwaway cutting inserts made of hard alloy T15K6 using continuous laser impact at various modes. Tests were carried outon inserts made of hard alloy T15K6. The cutting properties of the inserts were determined by cutting on a T612 vertical milling machine. A face mill with a diameter of 100 mm with mechanical mounting of tested inserts was used as a tool.Dry milling was performed using two inserts. At that, cutting mode was of impact natureas the mill diameter was larger than the width of machined workpiece. Number of passes – 5. Cutting modes:

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20

Golka, Wiesław, Grzegorz Żurek, and Jan Radosław Kamiński. "Permanent Grassland Restoration Techniques – An Overview." Agricultural Engineering 20, no. 4 (2016): 51–58. http://dx.doi.org/10.1515/agriceng-2016-0063.

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Abstract Short review of grassland restoration techniques has been made with emphasis on the application of newly developed wide-strip overseeding aggregate. Machines currently available on the market are not suitable for all types of soil and grassland conditions. Vredo seeder is useless on muck soils, while Moore aggregate requires herbicide application. Therefore it is not to be applied in organic farming. Construction designated in ITP Kłudzienko (wide-strip overseeder) is a very economical and effective, possible to be used also on muck soils and without assistance of any chemicals. Opera

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21

Jaskólski, Piotr, Krzysztof Nadolny, Krzysztof Kukiełka, Wojciech Kapłonek, Danil Yurievich Pimenov, and Shubham Sharma. "Dimensional Analysis of Workpieces Machined Using Prototype Machine Tool Integrating 3D Scanning, Milling and Shaped Grinding." Materials 13, no. 24 (2020): 5663. http://dx.doi.org/10.3390/ma13245663.

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In the literature, there are a small number of publications regarding the construction and application of machine tools that integrate several machining operations. Additionally, solutions that allow for such integration for complex operations, such as the machining of shape surfaces with complex contours, are relatively rare. The authors of this article carried out dimensional analysis of workpieces machined using a prototype Computerized Numerical Control (CNC) machine tool that integrates the possibilities of 3D scanning, milling operations in three axes, and grinding operations using abras

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22

Xia, Lian, Jiang Han, and Hu Li. "Research on Rotary and Tilting Table Five-Axis Milling Post-Processing Software Star-Fpost." Advanced Materials Research 403-408 (November 2011): 2962–66. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.2962.

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Based on the MIRON UCP800 rotary and tilting table five-axis machine, this paper studies the mathematical model of Five-Axis machining and derives the algorithm formula of Six-Coordinate axis vector into five-axis AC rotary and tilting table. The Post-Processing process of turning the source file to the machine tool path code is fulfilled by using coordinate transformation matrix; with reading the cutting location file line by line, a dedicated five-axis milling post-processing software through adapting the Keyword-Triggered method is developed by using object-oriented program in the paper. Fi

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23

Boral, Piotr, Tadeusz Nieszporek, and Rafał Gołębski. "The welded CNC machine tool frame." MATEC Web of Conferences 157 (2018): 01003. http://dx.doi.org/10.1051/matecconf/201815701003.

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Machine tools are built based on cast-iron bodies. Cast iron well dumps down vibrations and is dimensionally stable. Therefore, many conventional machine tools are modernized and modified into CNC machine tools based on the seasoned old bodies of those machine tools. Nevertheless, CNC machine tools are also manufactured based on polymer concrete, which vibration damping ability is even better. On the other hand, attempts made in the past by leading machine tool manufacturers to use welded frames in CNC machine tools failed. The revival of interest in welded frames was spurred by economic consi

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Chen, Dong. "Design of Open-Architecture Gantry Milling NC System Based on Motion Control Card." Key Engineering Materials 561 (July 2013): 663–66. http://dx.doi.org/10.4028/www.scientific.net/kem.561.663.

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The open-architecture control system is designed to realize the accurate motion control of gantry milling machine in this article. The hardware construction of control system adopts industry PC + Clipper motion control card architecture to achieve the opening and modularization. The Full coordination method is selected by assigning two motors of the gantry system to the same axis in the same coordinate system. The function modules of control software are demonstrated. It is programmed based on Visual c++ and Pcomm32 pro DLL library. The design of the gantry milling control system can realize t

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Kuo, Cheng-Hsien, and Po-Cheng Chen. "On-Machine Measurement and Error Compensation for 6061 Aluminum Alloy Hexagonal Punch Using a Turn-Milling Machine." Machines 9, no. 9 (2021): 180. http://dx.doi.org/10.3390/machines9090180.

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For machining parts with complex shapes, consisting of computer numerical control (CNC) machine tools, different CNC machine tools will be used according to the machining method. If the workpiece is removed for off-machine measurement after machining, when the size is incorrect, it will need to be returned to the CNC machine tool for secondary machining. In this case, the workpiece surface quality and machining accuracy will be affected, which is very time-consuming. On-machine measurement and complex machine center is a key to solve this problem. In the recent researches that the touch probe

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26

Kang, K. X., B. He, and S. J. Wang. "Experimental Study on the Breaking Ability of the Cutting Angle of Conical Picks." MATEC Web of Conferences 319 (2020): 04002. http://dx.doi.org/10.1051/matecconf/202031904002.

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This Effects of cutting angle of conical picks affecting on rock breaking capacity was researched to calculate the low construction efficiency of the conical picks at hard rock cutting. Firstly, according to the construction situation of the conical picks, the rotary milling test bench of rock was built. Secondly, the physical and mechanical properties of four kinds of rocks (blue sandstone, red sandstone, limestone, granite.) were measured, and the brittleness index of the four kinds of rocks was calculated. Finally, four kinds of rocks were tested at six cutting angles, respectively. The res

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27

Gnatowski, Adam, Rafał Gołębski, and Piotr Sikora. "Analysis of the Impact of Changes in Thermomechanical Properties of Polymer Materials on the Machining Process of Gears." Polymers 13, no. 1 (2020): 28. http://dx.doi.org/10.3390/polym13010028.

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This paper presents an analysis of the impact of modification of thermomechanical properties of polymer materials on the process of gear wheel machining on a CNC machine tool. Polymer materials Tecaflon (PVDA) and polyethylene (PE) were used for processing. The materials underwent thermal modification i.e., annealing. Prepared samples (gear wheel dimensions Ø76.5 × 20 mm) were machined under the same conditions, only changing the feed rate parameter. A CNC milling machine of its own construction was used for machining with a horizontal numerical dividing attachment. The obtained gear wheels we

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28

Denkena, B., B. Bergmann, T. Lepper, et al. "Ein Roboter für die effiziente Zerspanung*/A robot for efficient milling operations - Cutting of carbon fibre reinforced plastics using a new machine kinematic." wt Werkstattstechnik online 109, no. 03 (2019): 194–98. http://dx.doi.org/10.37544/1436-4980-2019-03-92.

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Kohlefaserverstärkte Kunststoffe werden verstärkt in der Luft- und Raumfahrt sowie in der Automobilindustrie eingesetzt, um durch Leichtbau die Energieeffizienz zu verbessern. Die spanende Nachbearbeitung dieser Teile ist besonders bei Funktionsflächen zwingend erforderlich und beeinflusst die Stückkosten wesentlich. Mit einer neu entwickelten Werkzeugmaschinenkinematik, einer von Beginn an berücksichtigten Absaugung sowie einem hohen Automatisierungsgrad sollen die Fertigungskosten gesenkt werden. &nbsp; In aerospace and automobile industry, fibre reinforced plastics are commonly used to

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29

Fomin, K. V. "Method for calculating the spectral density of the moment resistance on the working body of the road mill machine." Nauchno-tekhnicheskiy vestnik Bryanskogo gosudarstvennogo universiteta 6, no. 4 (2020): 518–28. http://dx.doi.org/10.22281/2413-9920-2020-06-04-518-528.

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Milling units are widely used in the construction and repair of roads. They guarantee high quality of work, have high productivity and make it possible to provide comprehensive mechanization of technological operations. During operation, significant dynamic loads occur in the drive elements and the design of the units, which leads to a deterioration in reliability indicators and a decrease in the technical and economic characteristics of their operation. Improving the reliability and efficiency of milling units is an problem, the solution of which is associated with the opportunity to predict

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30

Niu, Qin Zhou, and Yan Fang Song. "A Rapid Design System Integrated CBR with Variant Design." Applied Mechanics and Materials 610 (August 2014): 190–95. http://dx.doi.org/10.4028/www.scientific.net/amm.610.190.

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In the machine tool manufacturing industry, most of the design is based on previous experience and cases. However, some parts in the machine are complex and hard to modify for reuse. In this paper, CBR integrated with variant design is proposed to accelerate the knowledge reuse process. The experience and the cases are saved in the case base, and the similarity of the cases includes the parameters and structure. The revise process is using the proposed variant design to modify the case, and we mainly talking about the process on the construction of the functional relationship, which is the key

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31

Patwari, Anayet U., Waleed F. Faris, A. K. M. Nurul Amin, and S. K. Loh. "Dynamic Modal Analysis of Vertical Machining Centre Components." Advances in Acoustics and Vibration 2009 (February 2, 2009): 1–10. http://dx.doi.org/10.1155/2009/508076.

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The paper presents a systematic procedure and details of the use of experimental and analytical modal analysis technique for structural dynamic evaluation processes of a vertical machining centre. The main results deal with assessment of the mode shape of the different components of the vertical machining centre. The simplified experimental modal analysis of different components of milling machine was carried out. This model of the different machine tool's structure is made by design software and analyzed by finite element simulation using ABAQUS software to extract the different theoretical m

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32

Choirony, Iklil Vurqon, Mohammad Slamed Hariyanto, Miftachul Ulum, Achmad Ubaidillah, Haryanto Haryanto, and Riza Alfita. "Rancang Bangun Acrylic Engraver and Cutting Machine Menggunakan CNC Milling 3 Axis Berbasis Mikrokontroler." Elektrika 13, no. 1 (2021): 13. http://dx.doi.org/10.26623/elektrika.v13i1.3071.

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<p><em><span lang="EN-US">The purpose of this research is to design and implement an automatic acrylic carving and cutting tool using a microcontroller-based 3-axis CNC machine. Computer Numerical Control (CNC) is a machine technology that is operated automatically to support the demand for a product that has a complex shape and high accuracy. In general, the construction of a 3-axis CNC machine and its working system is synchronization between the computer and its mechanics. This tool has a work process by utilizing the G-Code method as a command on the machine to carry out

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33

UBOWSKA, Agnieszka. "THERMOPLASTIC POLYMER MACHINE GUARDS – EXPLOITATION SAFETY." Journal of Science of the Gen. Tadeusz Kosciuszko Military Academy of Land Forces 185, no. 3 (2017): 148–58. http://dx.doi.org/10.5604/01.3001.0010.5130.

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The machine construction sector uses from 2 to 5% of thermoplastic polymer produc-tion. This material is used to make small elements and big parts of equipment, includ-ing guards. The latter have mechanical vibration damping capacity, do not require any maintenance, are cheap and look attractive. Moreover, polymer guards are an essen-tial element of machines as they improve workplace safety. They are used in such ma-chines as lathes, milling machines, drills, extruding machines, presses and grinders. Pursuant to the Ordinance of the Minister of Labour and Social Policy on general provi-sions f

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34

Krishnaraj, Vijayan. "Optimisation of End Milling Parameters on Aluminium/SiC Composites Using Response Surface and Artificial Neural Network Methodologies." Materials Science Forum 766 (July 2013): 59–75. http://dx.doi.org/10.4028/www.scientific.net/msf.766.59.

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In recent years, the utilization of metal matrix composites (MMC) have increased in engineering fields of automobile, aviation, aerospace, construction and microelectronics. In conjunction with innovations in these advanced materials, machining them to obtain good dimensional accuracy and surface integrity has become a challenge. In this present work, 15 % (by weight) SiC particle reinforced aluminium is synthesized by stir casting technique. The synthesized MMC is end milled using Ø16 mm carbide end mill in a CNC milling machine and the machining parameters explicitly cutting speed, feed rate

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35

Ghionea, Ionuţ Gabriel, Adrian Ghionea, and Saša Ćuković. "Simulation of the Machining Process for a Spur Gear Pump Body - A Practical Study." Applied Mechanics and Materials 834 (April 2016): 108–13. http://dx.doi.org/10.4028/www.scientific.net/amm.834.108.

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The paper presents theoretical and applicative aspects concerning the construction, machining technology analysis of a spur gear pump body. For the machining process it is chosen a numerically controlled milling machine tool. The part analysed represents the main component of a hydraulic pump from the current production of a Romanian company. From a technical point of view, the part is highly complex due to the shape and dimensional precision, assembly and operation conditions of the pump as a whole. The authors propose some considerations related to optimization, choice of cutting tools, cutt

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Barbosa, Gustavo Franco, and José Otávio Savazzi. "INFLUENCY OF CUTTING TOOL’S ANGLE ON MILLING OF COMPOSITE MATERIALS PERFORMED BY ROBOTS." Brazilian Journal of Operations & Production Management 13, no. 2 (2016): 226. http://dx.doi.org/10.14488/bjopm.2016.v13.n2.a9.

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Nowadays, the aircraft manufacturing environment has searched for new features related to machining operations in order to improve the performance faced to production requirements. The machining process in aerospace industry has been and will continue to grow at a very high rate due to the high variety of materials to be processed. On this way, composite materials have been largely used as a construction material for parts, components, wings, fuselage sections and furniture of business jets. Especially for the furniture fabrication, one key challenge of the manufacturers is the ability to effi

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Kravchenko, I. I. "Mathematical Model of Flat Surface Machining Inaccuracies due to Elastic Strains of Technological System." Mechanical Engineering and Computer Science, no. 9 (December 2, 2018): 1–14. http://dx.doi.org/10.24108/0918.0001426.

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The paper considers the mathematical model development technique to build a vector field of the shape deviations when machining flat surfaces of shell parts on multi-operational machines under conditions of anisotropic rigidity in technological system (TS). The technological system has an anisotropic rigidity, as its elastic strains do not obey the accepted concepts, i.e. the rigidity towards the coordinate axes of the machine is the same, and they occur only towards the external force. The record shows that the diagrams of elastic strains of machine units are substantially different from the

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Svatoš, Michal, Zdeněk Kopecký, and Miroslav Rousek. "Effects of the technolology of machining on the surface quality of selected wood." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 59, no. 6 (2011): 329–36. http://dx.doi.org/10.11118/actaun201159060329.

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The paper deals with the dependence of using basic types of machining technologies on the surface quality of most common wood. In wood-processing industry, cutting by circular-saw blades and milling are the most often used technology to machining wood materials. The quality and accuracy of the machining are derived from the machine construction, shape and the amount of saw teeth, kind of wood species, feed per tooth and the size of the tool. Research was carried out on an experimental milling stand at setting various feed speeds and the spindle rpm, on an experimental cutting stand at using th

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Wang, Hai Rui, Ya Li, Jian Ying Wang, and Yong Yi Liao. "Application of Siemens 840Di System in the Reconstruction of KISC Roll Collar Grinder." Applied Mechanics and Materials 437 (October 2013): 740–43. http://dx.doi.org/10.4028/www.scientific.net/amm.437.740.

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This work studies the reconstruction of high-speed roll grinder for sculptured surfaces with high feed rates. Experiments and predictions were focused on representative surfaces of dies and molds, whose geometric complexity and complexity distribution were modified parametrically. CNC programs for machining these surfaces were executed in a HERKULES HSF2CNC machining center with a SIEMENS 840D controller, with different levels of programmed feed rate. Discrepancies between programmed and actual feed rates were evaluated. A mechanistic approach for roll grinder in high-speed milling of sculptur

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Polasik, Robert, Janusz Musiał, Jarosław Jasik, Igor Kovtun, and Aleksandr Povareho. "Selected aspects of diagnosing material removal machining processes state." MATEC Web of Conferences 332 (2021): 01014. http://dx.doi.org/10.1051/matecconf/202133201014.

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The article presents the results of works on the analysis of the possibility of using force measurements to determine the state of the machining process, both in relation to the phenomena occurring during machining and the workpiece itself compared to acoustic emission signal (AE). The research and analyzes were carried out for the commonly used material removal processes of objects; turning, milling, grinding and drilling. Various materials were processed - metal alloy Hardox 400 as well as fiber composite materials (GFRP - Glass Fiber Reinforced Polymer) and polymer construction material Ren

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Robeller, Christopher, Mina Konaković, Mira Dedijer, Mark Pauly, and Yves Weinand. "Double-layered timber plate shell." International Journal of Space Structures 32, no. 3-4 (2017): 160–75. http://dx.doi.org/10.1177/0266351117742853.

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This article presents a new lightweight construction system for doubly curved shells made from timber plates, inspired by the masonry vaults of Eladio Dieste. The system was developed for a specific case-study project, and general applications to other freeform surfaces are being discussed. The shells are built from two interconnected layers of structural wood veneer plates, using integral through-tenon joints for a fast, precise, and simple assembly. This allows for the construction of a series of differently shaped vaults without a costly mold or support structure. Instead, inclined joints c

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Yang, James, Patrik Andreasson, Penghua Teng, and Qiancheng Xie. "The Past and Present of Discharge Capacity Modeling for Spillways—A Swedish Perspective." Fluids 4, no. 1 (2019): 10. http://dx.doi.org/10.3390/fluids4010010.

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Most of the hydropower dams in Sweden were built before 1980. The present dam-safety guidelines have resulted in higher design floods than their spillway discharge capacity and the need for structural upgrades. This has led to renewed laboratory model tests. For some dams, even computational fluid dynamics (CFD) simulations are performed. This provides the possibility to compare the spillway discharge data between the model tests performed a few decades apart. The paper presents the hydropower development, the needs for the ongoing dam rehabilitations and the history of physical hydraulic mode

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Bołoz, Łukasz. "Directions for increasing conical picks’ durability." New Trends in Production Engineering 2, no. 1 (2019): 277–86. http://dx.doi.org/10.2478/ntpe-2019-0029.

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Abstract Conical picks are cutting tools used in many branches, in particular in the mining, road construction and building branch. Contact with the excavated face causes their constant wear, which is an unfavorable but unavoidable process. Milling heads of working machines are equipped with several dozen conical picks, and mining in abrasive or hardly accessible rocks can reduce their life to a few hours. It is in the interest of both users and producers to increase their durability, as tools replacement, apart from purchase and logistic costs, results in machine downtimes. In the article var

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Aziz, Ei-Sayed, and C. Chassapis. "Knowledge-based Geometry Generation for Spur and Helical Gears." Concurrent Engineering 10, no. 3 (2002): 251–61. http://dx.doi.org/10.1177/106329302761689160.

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Numerical analysis and true 3-D solid models of gear pairs are highly desirable to simulate real working conditions and reduce long and expensive test phases. This article presents methods, within a knowledge-based Automated Concurrent Engineering Software (ACES) for gear design and manufacturing system, for defining the gear tooth profile analytically from basic geometric parameters (diametral pitch, pressure and helix angles, number of teeth and tooth thickness) and determining the coordinates of all points on the working and the fillet portions of the tooth for standard and nonstandard gear

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Gokul, G., and S. Senthil Kumaran. "Dissimilar Study on Friction Welding of AA 2025 Tube Plate to Copper Tube Using an External Tool." Applied Mechanics and Materials 852 (September 2016): 362–68. http://dx.doi.org/10.4028/www.scientific.net/amm.852.362.

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In this project the feasibility of friction welding in tube to tube plate using an external tool (FWTPET) of commercial Copper and Aluminum 2025 tube plate is investigated using an clearance fit method and the process parameters have been prioritized using Taguchi’s L27 orthogonal array. Than experiment is conducted and take results are compressive strength and hardness testing, Radiography test, Scanning Electron Microscopy and Energy Dispersive Spectroscopy testing. Aluminum 2025 are widely used in aerospace, automotive, marine, defense, construction etc. Friction welding is preferred for jo

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MARSHALL, S., and J. G. GRIFFITHS. "A new cutter path construction technique for milling machines." International Journal of Production Research 33, no. 6 (1995): 1723–36. http://dx.doi.org/10.1080/00207549508930239.

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Patrik, Šarga, Trebuňa František, and Grejták Branislav. "DESIGN OF CONTROL FOR THE DEVICE USING FOR THE DETERMINATION OF RESIDUAL STRESSES BY RING-CORE METHOD." TECHNICAL SCIENCES AND TECHNOLOG IES, no. 4 (14) (2018): 162–68. http://dx.doi.org/10.25140/2411-5363-2018-4(14)-162-168.

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Urgency of the research. Residual stresses in machine parts and constructions greatly affect their service life and reliability. They are introduced into the manufactured object at each production process and their level can change significantly due to the operation of the product. Their main risk lies in the fact that they add up to the external load and can be the cause of the failure of the construction. Residual stresses can not be determined by simulation methods. They can only be determined using experimental methods. One of these method is the Ring-Core method, the principle of which is

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MARSHALL, S., and J. G. GRIFFITHS. "A survey of cutter path construction techniques for milling machines." International Journal of Production Research 32, no. 12 (1994): 2861–77. http://dx.doi.org/10.1080/00207549408957105.

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Furmanov, Denis, Vladimir Chizhov, Ivan Tyuremnov, and Denis Troshin. "Loads on cutter teeth for removing asphalt pavement." E3S Web of Conferences 97 (2019): 06031. http://dx.doi.org/10.1051/e3sconf/20199706031.

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Machines and equipment for asphalt pavement milling are widely used throughout the world. With the growth of road construction, the demand for this class of machinery also rises. At the same time, the optimization of design and technological parameters of the milling machines is impossible without a comprehensive study of processes of milling asphalt concrete with the working elements of a cutter. The article provides a brief overview of different approaches to find out the loads on the working bodies of various machines, as well as indicates the advantages and disadvantages of these approache

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Shnaihej, Kareem Th, Shatha F. Khaleel, and Dr Khalid A. Sukkar. "Preparation of Nano Silica particles by laboratory from Iraqi sand and added it to concrete to improve hardness specifications." Journal of Petroleum Research and Studies 9, no. 3 (2019): 36–58. http://dx.doi.org/10.52716/jprs.v9i3.313.

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Concrete is the most common material used for construction purposes as well as in the lining of oil wells. In this work, the concrete specifications are improved through the preparation of Nano silica particles (SiO2) by laboratory from Iraqi sand and added to the concrete, which gives results with a large gap in the test of compressive strength after the addition of silica nanoparticles prepared to the concrete mixtures compared to the same mixtures without the addition of silica, to give high hardness and great capacity for bearing of compressive strength as well as increase the resistance t

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