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Journal articles on the topic 'CNC machining centre'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Cizikova, Andrea, Katarina Monkova, Peter Monka, and Marek Urban. "ANALYSIS OF FREQUENCY CHARACTERISTICS AT SPINDLE CNC MACHINING CENTRE." MM Science Journal 2016, no. 06 (2016): 1515–18. http://dx.doi.org/10.17973/mmsj.2016_12_201627.

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2

Ganea, Macedon, Constantin Bungau, and Rares Pancu. "Modern Flexible Manufacturing Cell (FMC), Build by Retrofitting at Oradea University." Applied Mechanics and Materials 282 (January 2013): 45–50. http://dx.doi.org/10.4028/www.scientific.net/amm.282.45.

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The Faculty IMT (Technological and Managing Engineering into mechanic domain) from Oradea University decided to develop by retrofitting activity one old second hand Horizontal Machining Centre from the Laboratory, in order to obtain the newest level as the most economic investment, able to answer at the educational conditions, according to the academic curriculum for bachelor, master and even PhD levels. The retrofitting activity was based on Fanuc components (CNC, AC drives & servomotors, PLC, measuring system, etc) on the basic machine, but also the machine CNC extension to “five axes ma

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3

Bungău, Constantin, Rareş Pancu, and Traian Buidoş. "Analysis of the Linear Positioning Accuracy on Z Axis at the Horizontal Machining Centre TMA-AL-550." Advanced Materials Research 837 (November 2013): 179–84. http://dx.doi.org/10.4028/www.scientific.net/amr.837.179.

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This paper presents a case study regarding use the laser XL 80 to check the linearity movement of the Z-axis to horizontal machining center, TMA-AL 550. This machining center has been upgraded to the possibility of processing to 3 CNC linear axes and 2 CNC rotary axes (up to 5 CNC simultaneous axes) and also 1 PLC axis (the index table), as well the including of the machine into to the flexible manufacturing cell. This work paper presents the linearity accuracy at machining centre on the Z axis and shows the operating correction parameters by software and the necessity of backlash adjustment b

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4

Ivan, Andrei Mario, Florin Adrian Nicolescu, Georgia Cezara Avram, and Adrian Theodor Mantea. "Off-Line Programming and Functioning Simulation of Robotic Flexible Manufacturing Cell for Part's Turning." Applied Mechanics and Materials 760 (May 2015): 213–18. http://dx.doi.org/10.4028/www.scientific.net/amm.760.213.

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This paper presents the works performed by the authors in the field of robotic flexible manufacturing cell offline programming and simulation. The study includes a manufacturing cell structure which includes a part transport system, a CNC lathe / turning centre and an articulated arm type industrial robot. The robot performs the task of loading / unloading the CNC lathe / manufacturing centre and manipulating the parts inside the cell, while the machining operations are performed by the CNC manufacturing centre. After briefly presenting the layout of the cell, the paper focuses on describing t

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Kminiak, Richard, Kazimierz A. Orlowski, Ladislav Dzurenda, Daniel Chuchala, and Adrián Banski. "Effect of Thermal Treatment of Birch Wood by Saturated Water Vapor on Granulometric Composition of Chips from Sawing and Milling Processes from the Point of View of Its Processing to Composites." Applied Sciences 10, no. 21 (2020): 7545. http://dx.doi.org/10.3390/app10217545.

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The goal of this work is to investigate the impact of thermal modification of birch wood with saturated steam on the particle size distribution of the sawing and milling process. Birch wood (Betula pendula Roth) is an excellent source to produce plywood boards. Wastes from mechanical processing of birch wood are suitable to produce composite materials. Granulometric analyses of chips from sawing processes on the PRW 15M frame saw, as well as on the 5-axis CNC machining centre SCM TECH Z5 and the 5-axis CNC machining centre AX320 Pinnacle, proved that more than 95% of chips are chips of coarse

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6

McKnight, W. W., G. R. Dickson, and D. Crossen. "Utilisation of CNC machining centre as a three-dimensional copy mill." Journal of Materials Processing Technology 43, no. 1 (1994): 61–64. http://dx.doi.org/10.1016/0924-0136(94)90162-7.

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7

Ganesan, H., and G. Mohankumar. "Optimization of Machining Techniques in CNC Turning Centre Using Genetic Algorithm." Arabian Journal for Science and Engineering 38, no. 6 (2013): 1529–38. http://dx.doi.org/10.1007/s13369-013-0539-8.

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8

Ford, DG, MHN Widiyarto, A. Myers, AP Longstaff, and S. Fletcher. "Structural analysis and characterisation technique applied to a CNC vertical machining centre." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 13 (2014): 2357–71. http://dx.doi.org/10.1177/0954406213517496.

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There is a requirement for improved 3D surface characterisation and reduced tool wear, when modern computer numerical-controlled (CNC) machine tools are operating at high cutting velocities, spindle speeds and feed-rates. This research project investigates vibration-induced errors on a CNC vertical machining centre under dynamic conditions. A model of the machine structural dynamics is constructed using the Finite Element Method (FEM) for the comprehensive analytical investigation of the machine vibration behaviour. The analytical model is then validated against the measured results obtained f

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9

van Ligten, R. F., and V. C. Venkatesh. "Diamond Grinding of Aspheric Surfaces on a CNC 4-Axis Machining Centre." CIRP Annals 34, no. 1 (1985): 295–98. http://dx.doi.org/10.1016/s0007-8506(07)61776-4.

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10

Vichare, P., A. Nassehi, and S. Newman. "A unified manufacturing resource model for representation of computerized numerically controlled machine tools." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 223, no. 5 (2009): 463–83. http://dx.doi.org/10.1243/09544054jem1363.

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The capability of any manufacturing system primarily depends on its available machine tools. Thus machine tool representation is a vital part of modelling any manufacturing system. With the rapid advances in computerized numerically controlled (CNC) machines, machine tool representation has become a more challenging task than ever before. Today's CNC machine tools are more than just automated manufacturing machines, as they can be considered multi-purpose, multi-tasking, and hybrid machining centres. This paper presents a versatile methodology for representing such state-of-the-art CNC machini

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11

Jozwik, Jerzy, Paweł Lonkwic, Milan Saga, and Ivan Kuric. "R-Test Static Measurement of The 5-axis CNC Machining Centre Rotary Axis Kinematic Centre Error." Manufacturing Technology 14, no. 2 (2014): 186–93. http://dx.doi.org/10.21062/ujep/x.2014/a/1213-2489/mt/14/2/186.

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12

M., Abd Elkhalek, Elhakim A., Wahba A., and Moughith S. "OPTIMIZATION OF IDLE PATH IN DRILLING ON CNC MACHINING CENTRE USING THE GA." International Conference on Applied Mechanics and Mechanical Engineering 12, no. 12 (2006): 214–28. http://dx.doi.org/10.21608/amme.2006.42253.

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13

BISSCHOP, J. J., H. STEGEMAN, and M. E. A. STRIEKWOLD. "The sequencing of point operations on a CNC-machining centre using a microcomputer." International Journal of Production Research 26, no. 8 (1988): 1375–83. http://dx.doi.org/10.1080/00207548808947952.

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14

Deng, Xiaolei, Jianzhong Fu, and Zichen Chen. "Thermal-structure characteristics coupling analysis and optimisation for horizontal CNC machining centre spindle." International Journal of Materials and Structural Integrity 8, no. 4 (2014): 257. http://dx.doi.org/10.1504/ijmsi.2014.067114.

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15

Bedi, S., W. Chernoff, and G. W. Vickers. "Computer-aided Fairing and Direct Numerically Controlled Machining of Ship Hull Hydrodynamic Testing Models." Transactions of the Canadian Society for Mechanical Engineering 12, no. 1 (1988): 43–48. http://dx.doi.org/10.1139/tcsme-1988-0007.

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A computer-aided method of defining and machining 2-metre ship hull forms for hydrodynamic testing is described. The hull shape is faired from the original table of off-sets using a minimum number of smooth three-dimensional parametric skeletal-lines along the length of the boat. A fine set of smoothly blending station-lines is therby formed. The hull shape is preformed in two halves through a lamination process and machined on a three-axis numerically controlled machining (CNC) centre. A carbide-tipped, end-milling cutter is directed along the closely spaced station-lines to rapidly form an a

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16

Usop, Zuriani, Ahmed A. D. Sarhan, N. A. Mardi, and Md Nizam Abd Wahab. "Measuring of positioning, circularity and static errors of a CNC Vertical Machining Centre for validating the machining accuracy." Measurement 61 (February 2015): 39–50. http://dx.doi.org/10.1016/j.measurement.2014.10.025.

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17

Nayak, Prasmit Kumar, and MS Shunmugam. "CAD simulation and generation machining of discrete ring-involute spherical segment gear pair." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 226, no. 7 (2011): 1832–44. http://dx.doi.org/10.1177/0954406211427833.

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A spherical segment gear pair is useful in robotic wrist and similar such applications that require two degrees of freedom. From the first principle, tooth surface of spherical gear can be mathematically derived from a rack-cutter profile using the coordinate transformation and one-parameter family of envelope theory. Alternatively, the spherical gear tooth surface is obtained as an envelope of a series of cutter surfaces formed during the kinematic motion between work blank and cutter. Conventional gear cutting machines cannot be used to generate the spherical gears and hence the spherical ge

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18

Wang, Xiu Shan, Yan Li, and Yong Chang Yu. "Thermal Error Robust Modeling and Real Time Compensation Based on the GA-BPN Theory on a Vertical Machine Centre." Advanced Materials Research 97-101 (March 2010): 3211–14. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.3211.

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Thermal errors generally account for as much as 70% of the total errors of CNC machine tools, are the most contributor to the workpiece dimensional precision in precision machining process. Thermal error compensation is an effective way to decreasing thermal errors. Precision mode is a key to thermal error compensation. In this paper thermal error modeling method based on the artificial neural networks (ANN) algorithm is applied for a vertical machining center. Four key temperature points of a vertical machining center were obtained based on the temperature field analysis. A novel genetic algo

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19

Hafiz Zani, M., Halim Isa, S. M. Muhammad Syafiq, O. Rawaida, Z. Nuradilah, and Ros Ahmad Fatihah. "The Effects of Roller Conveyor on Muscle Activity in Workpiece Loading on CNC Machining Centre: A Preliminary Study." Applied Mechanics and Materials 761 (May 2015): 673–77. http://dx.doi.org/10.4028/www.scientific.net/amm.761.673.

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In the recent years, Advance Manufacturing Technology (AMT) has been widely used in manufacturing industry to increase manufacturing process capability. However, Computer Numerical Control (CNC) machine designs have only focused on its operational capability. The harmonious coordination between users and CNC machines is often neglected, which can contribute to hazardous working practices that can affect the health of users. Bending posture while loading the work piece to the machine can cause fatigue and discomfort to the users. Thus, the focus of this preliminary study is to analyse the effec

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20

Paulic, Matej, Tomaz Irgolic, and Joze Balic. "Computer Aided Manufacturing of Models for Moulding out of Synthetic Materials for Producing Sand Casting Moulds." Applied Mechanics and Materials 474 (January 2014): 460–65. http://dx.doi.org/10.4028/www.scientific.net/amm.474.460.

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Paper is presenting computer aided machining of models for moulding out of synthetic materials. Goal of the project was to produce a manikin (dummy) from aluminium alloy for testing protective clothes for intervention services. Usage of state-of-the-art software for CAD modeling and CAM machining has been applied. At planning of the machining strategies, the software package UGS NX 7 has been used. Machining of certain models has been done on CNC machining centre Heller BEA 1. Due to dimensional restrictions on the machine workspace we had to part up the models on smaller segments. The model p

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21

Liu, Kui, Pei Ling Liu, Hu Wu, and Kah Chuan Shaw. "Study on Tool-Path Generation for Ultra-Precision Machining of Optical Lens Array." Key Engineering Materials 516 (June 2012): 595–99. http://dx.doi.org/10.4028/www.scientific.net/kem.516.595.

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In this study, a computer numerical control (CNC) programming software platform for ultra precision machining of optical surfaces was developed based on an MS Windows application framework and openGL. Using cylindrical coordinates, the tool path can be generated based on the polar angle, radius and a linear coordinate of the Z-axis, as well as cutting tool nose radius compensation. A 3D simulation based on tool path generation was developed for machining verification, which largely reduces the oscillation of the machine during the ultra precision machining process. Ultra precision machining of

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22

Zhao, Yu Xia, Jie Jian Di, and De Wen Gao. "Solid Modeling and Machining Approach of the Impeller Based on Five-Axis Machine Tool." Advanced Materials Research 189-193 (February 2011): 801–4. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.801.

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An impeller is the core of aviation engine components, the processing quality has a decisive impact on the performance of the engine. An impeller is also one of the most important basic components of centrifugal compressor. When a three-axis CNC machining centre is used for producing an impeller, great difficulties, i.e. collisions between the cutting tool and the impeller, can occur. As the surface is normally twisted in design to achieve the required performance, it can cause overcut and collision problems during machining. To solve these problems, an integrated five-axis machining approach

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23

Igaz, Rastislav, Richard Kminiak, Ľuboš Krišťák, Miroslav Němec, and Tomáš Gergeľ. "Methodology of Temperature Monitoring in the Process of CNC Machining of Solid Wood." Sustainability 11, no. 1 (2018): 95. http://dx.doi.org/10.3390/su11010095.

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The issue of the change in tool temperature as a result of the machining process is presented in this paper. The aim of the paper is to put forward a proposal and subsequently to verify the methodology of temperature monitoring in the process of computer numerical control (CNC) machining in real time. Subsequently, the data can be used in the process of adaptive machine-tool control. Experiments were used to determine whether the research method is appropriate. Oak, beech and spruce wood turning blanks with the thickness of 20 mm were machined using a 5-axis CNC machining centre. A temperature

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24

Bungău, Constantin, Macedon Ganea, and Rares Pancu. "New Tendency of Machine Tool Study Based on Virtual Machining Software Applied at University of Oradea." Applied Mechanics and Materials 613 (August 2014): 396–401. http://dx.doi.org/10.4028/www.scientific.net/amm.613.396.

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The present paper work shows the efforts of the research group from University of Oradea on the introduction into the educational program at all the levels (bachelor, master and PhD) of the newest method of the machine tool study. By these methods is need to understand the educational stages ( engineering for constructive parts, the machining on CNC milling centre up to 5 axes simultaneous, machining of very complexes parts, the programming of the CNC units, the using of the most advanced CAM software, the programming of the robots into the flexible manufacturing cell, etc.). On the other hand

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25

Lian, Ling Neng, Bin Li, and Hong Qi Liu. "Study of Spindle Current Signals for Tool Breakage Detection in Milling." Advanced Materials Research 853 (December 2013): 482–87. http://dx.doi.org/10.4028/www.scientific.net/amr.853.482.

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Failure of cutting tools significantly decreases machining productivity and product quality, thus, tool condition monitoring is significant in modern manufacturing processes. In this paper, a novel method based on singular value decomposition (SVD) and Linear Discriminant analysis (LDA) is proposed for detection of different broken tooth via spindle-motor current signals generated in end milling process. First, SVD algorithm is adopted to extract the useful singular values as salient features for indicating the tool state. Then classify the tool breakage event based on the selected features th

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26

Hanna, M. M., A. Buck, and R. Smith. "Fuzzy Petri nets with neural networks to model products quality from a CNC-milling machining centre." IEEE Transactions on Systems, Man, and Cybernetics - Part A: Systems and Humans 26, no. 5 (1996): 638–45. http://dx.doi.org/10.1109/3468.531910.

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27

Verma, Kuldeep, and Rajendra M. Belokar. "Experimental investigations of ball screws over static and accelerating torque-based lead factor in CNC machining centre." Journal of Engineering 2018, no. 1 (2018): 17–21. http://dx.doi.org/10.1049/joe.2017.0298.

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28

Stalin John, M. R., and B. K. Vinayagam. "Optimization of Ball Burnishing Process on Tool Steel (T215Cr12) in CNC Machining Centre Using Response Surface Methodology." Arabian Journal for Science and Engineering 36, no. 7 (2011): 1407–22. http://dx.doi.org/10.1007/s13369-011-0126-9.

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29

Haba, Sever Alexandru, and Gheorghe Oancea. "Design and Manufacturing Optimization of Single-Cylinder Engine Block Prototype Using CATIA Environment." Applied Mechanics and Materials 474 (January 2014): 165–70. http://dx.doi.org/10.4028/www.scientific.net/amm.474.165.

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This paper presents a complex project, implemented in CATIA V5 environment, used for mechanical design and prototype obtaining of the single-cylinder engine block. The main features which are implemented allow reducing the time for design, using the end user design parameters for the prototype manufacturing, reducing the material consumption, optimization of the numerical control technology for milling process. The paper also presents a software system, developed with Visual Basic in CATIA environment, which can be used to automate the process of 3D model generating, creating the data files fo

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30

Yulian T. Adesta, Erry, Muhammad Riza, and Avicenna Avicenna. "Content Comparative Investigation on Tool Wear During End Milling of AISI H13 Steel with Different Tool Path Strategies." Bulletin of Electrical Engineering and Informatics 6, no. 4 (2017): 327–33. http://dx.doi.org/10.11591/eei.v6i4.852.

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Tool wear prediction plays a significant role in machining industry for proper planning and control machining parameters and optimization of cutting conditions. This paper aims to investigate the effect of tool path strategies that are contour-in and zigzag tool path strategies applied on tool wear during pocket milling process. The experiments were carried out on CNC vertical machining centre by involving PVD coated carbide inserts. Cutting speed, feed rate and depth of cut were set to vary. In an experiment with three factors at three levels, Response Surface Method (RSM) design of experimen

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31

Gopinath, L., and S. Ravishankar. "Manufacturability of Aircraft Winglet for Wind Tunnel Testing." Materials Science Forum 830-831 (September 2015): 100–103. http://dx.doi.org/10.4028/www.scientific.net/msf.830-831.100.

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The form, shape and dimensions of the scaled down winglet model become small and thin bringing complexity to manufacturing. The trailing edge tapers to a thickness varying from 0.065mm to 0.099mm along its length. The mounting portion of the winglet is provided with a close tolerance having a slot gap of 5mm and a depth of 35 mm with an angle. Additionally, wind tunnel models require good surface finish on the aerodynamic surfaces and this involves adopting a manufacturing strategy with a control over on the metal cutting parameters to be implemented on a three axes CNC machining centre. The w

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32

Suárez-Fernández, Daniel, Bradley P. Wynne, Pete Crawforth, Katharine Fox, and Martin Jackson. "A Novel Technique to Assess the Effect of Machining and Subsurface Microstructure on the Fatigue Performance of Ti-6Al-2Sn-4Zr-6Mo." MATEC Web of Conferences 321 (2020): 04012. http://dx.doi.org/10.1051/matecconf/202032104012.

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Aerospace titanium components are manufactured under the strictest standards in order to ensure the highest quality. To develop highly efficient machining processes, extensive research and investment is necessary. For the specific case of rotating titanium critical components, large quantities of forged workpieces are machined to determine the effects of the different machining parameters on tool wear characteristics and component structural integrity and performance. However, testing the different permutations of metal removal parameters and tool combinations is expensive and time consuming a

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33

Vosniakos, G. C., and T. Giannakakis. "Reverse engineering of simple surfaces of unknown shape with touch probes: Scanning and compensation issues." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 217, no. 4 (2003): 563–68. http://dx.doi.org/10.1243/095440503321628233.

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This work discusses issues concerning the implementation of scanning of unknown engineering objects containing just simple (i.e. no freeform) surfaces with touch probes on three-axis computer numerical control (CNC) measuring machines in order to reconstruct their shape in a computer aided design (CAD) system. Several ideas are put forward e.g. scanning along vertical slicing planes adaptive point sampling distances in-process ‘proactive’ segmentation of points into curve sections and probe radius compensation in two directions as well as limited remedy of edge scanning ambiguities. Most of th

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34

Chan, Sunny, Sammy Wong, Tom C. Kong, and Ru Du. "Development of a Millimeter Scale Turning Centre for Gear Hobbing." Key Engineering Materials 364-366 (December 2007): 249–53. http://dx.doi.org/10.4028/www.scientific.net/kem.364-366.249.

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Conventional machining is generally preferred in manufacturing metal components with 2½D features and/or 3D silhouettes. With the ever increasing demand for reduced sizes and increased accuracy, however, traditional machine tools have become ineffective for cutting miniature components. A typical example is gear manufacturing. It is known that gears are machined using the gear hobbing process in which the cutter axis and the workpiece axis are required to be synchronized to an accurate constant ratio. According to a market survey, only a few machine tools can make gears with the size of φ1.0 m

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35

Ford, D. G., S. R. Postlethwaite, J. P. Allen, and M. D. Blake. "Compensation algorithms for the real-time correction of time and spatial errors in a vertical machining centre." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 214, no. 3 (2000): 221–34. http://dx.doi.org/10.1243/0954405001517603.

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This paper describes research into a machine tool error compensation system for universal application. Based on an indirect identification precalibrated technique, it utilizes a unique algorithm, which allows the compensation system to compensate for the geometric error components of any normal orthogonal machine tool configuration. The movement and position of the machine tool axes can affect individual machine tool axis error components (such as yaw, pitch, roll and straightness). The level of this axis coupling is dependent on the machine tool configuration and the rigidity of the machine t

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36

Han, Wei, Li Ming Wu, Yao Hua Deng, and He Yun Zhang. "Researching a Online Method of Measuring Three-Dimensional Deformation for Large Overhead Crossbeam." Key Engineering Materials 522 (August 2012): 272–77. http://dx.doi.org/10.4028/www.scientific.net/kem.522.272.

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Aiming at the difficulty of online measurement for three-dimensional deformation of large overhead crossbeam in gantry CNC machining centre, this paper proposes a measuring method based on multi-points attitude of crossbeam-body. Real-time measuring the attitudes of some equidistant points on crossbeam-body, dealing with the measurement information by adopt shockproof filtering, wavelet denoising and smoothing. Then infer the formulas to calculate deformation of each point along different directions ofx-axis,y-axis,z-axis. The experiment uses triaxial acceleration sensor modules to measure cro

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37

Saknararak, Komate, Phaireepinas Phimpisan, and Chatchapol Chungchoo. "Wear Monitoring of Steel Ball of a CNC Machining Centre by Using Surface Roughness of Finished Test Pieces." Key Engineering Materials 656-657 (July 2015): 410–15. http://dx.doi.org/10.4028/www.scientific.net/kem.656-657.410.

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Currently, there are several methods for indicating wear of the steel ball and screw shaft components of CNC machining centres. These include wear prediction of the steel ball and screw shaft of the ball screw by using the value of backlash. This value, generally, has to be determined using expensive equipment such as a laser interferometer or a ball bar. In order to reduce the monitoring cost of ball screw wear, especially steel ball wear, a new monitoring technique is introduced. This technique was developed from a correlation between steel ball wear and the surface roughness of the machined

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38

Ford, DG, VYM Castaneda, AP Longstaff, C. Pislaru, and A. Myers. "Computer numerical control vertical machining centre feed drive modelling using the transmission line technique." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 9 (2014): 1578–99. http://dx.doi.org/10.1177/0954406214546540.

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This study presents a novel application of the Transmission Line Matrix Method (TLM) for the modelling of the dynamic behaviour of non-linear hybrid systems for computer numerical control (CNC) machine tool drives. The application of the TLM technique implies the dividing of the ball-screw shaft into a number of identical elements in order to achieve the synchronisation of events in the simulation, and to provide an acceptable resolution according to the maximum frequency of interest. This entails the use of a high performance computing system with due consideration to the small time steps bei

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39

Kannan, T. Deepan Bharathi, B. Suresh Kumar, G. Rajesh Kannan, M. Umar, and Mohammad Chand Khan. "Application of Genetic Algorithm Technique for Machining Parameters Optimization in Drilling of Stainless Steel." Mechanics and Mechanical Engineering 23, no. 1 (2019): 271–76. http://dx.doi.org/10.2478/mme-2019-0036.

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Abstract This work is aimed at developing relations between the pertinent variables that affect drilling process of stainless steel using artificial neural network. The experiments were conducted on vertical CNC machining centre. The parameters used were spindle speed and feed rate. The effect of machining parameters on entry burr height, exit burr height and surface roughness was experimentally evaluated for different spindle speeds and feed rates. A model was established between the drilling parameters and experimentally obtained data using ANN. The predicted values and measured values are f

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40

Zapico, Pablo, Héctor Patiño, Gonzalo Valiño, Pedro Fernández, and J. Carlos Rico. "CNC centralized control for digitizing freeform surfaces by means of a conoscopic holography sensor integrated in a machining centre." Precision Engineering 55 (January 2019): 474–83. http://dx.doi.org/10.1016/j.precisioneng.2018.11.001.

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41

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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42

Mîtcă, Luisa N., Mustafa Günay, Radu Liviu Orban, and Ulvi Şeker. "A Study on the Effect of Manufacturing Conditions on Surface Roughness during Machining of Cu/Al₂O₃ Composites." Materials Science Forum 672 (January 2011): 263–70. http://dx.doi.org/10.4028/www.scientific.net/msf.672.263.

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In this study, the machinability of the Cu matrix composites reinforced with 5, 10, 15 and 20 vol.% of Al2O3 particulates produced by powder metallurgy have been investigated. The effects of compaction pressure, sintering duration and volume fraction of reinforcing component on the surface roughness during machining of the considered composites, obtained by the appropriate Cu-Al2O3 powder mixtures cool die pressing at 500, respectively 700 MPa, and sintered at 800 °C for durations of 45 and 60 minutes in an argon atmosphere were determined. The machining tests were performed on a CNC machining

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Kim, Ju-Ho, та Seung-Hwan Chang. "Design of μ-CNC machining centre with carbon/epoxy composite–aluminium hybrid structures containing friction layers for high damping capacity". Composite Structures 92, № 9 (2010): 2128–36. http://dx.doi.org/10.1016/j.compstruct.2009.09.043.

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Krishna Sastry, K. V., and V. Seshagiri Rao. "Multi Response Optimization of Carbon-Carbon (C/C) Drilling Parameters by Using Grey Theory Technique." Advanced Materials Research 936 (June 2014): 1801–8. http://dx.doi.org/10.4028/www.scientific.net/amr.936.1801.

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The objective of this paper is to determine the optimum values of drilling parameters of carbon fibre reinforced carbon (CFRC) composite material with the help of an experimental investigation, which includes the application of unique Grey theory method. The growing application of CFRC composites, which are popularly known as ‘carbon-carbon’ composites in Aerospace, Automobile, Defence and other advanced industries has prompted research studies to develop drilling technology of these special materials. The present work demonstrates the optimization process of multiple responses.The optimum val

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Bejaxhin, A. Bovas Herbert, and G. Paulraj. "Experimental investigation of vibration intensities of CNC machining centre by microphone signals with the effect of TiN/epoxy coated tool holder." Journal of Mechanical Science and Technology 33, no. 3 (2019): 1321–31. http://dx.doi.org/10.1007/s12206-018-1232-3.

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Riza, Muhammad, and Erry Y. T. Adesta. "Cutting Temperature Investigation of AISI H13 in High Speed End Milling." International Journal of Engineering Materials and Manufacture 1, no. 1 (2016): 27–34. http://dx.doi.org/10.26776/ijemm.01.01.2016.06.

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Heat produced at the tool-chip interface during high speed milling operations have been known as a significant factor that affect to tool life and workpiece geometry or properties. This paper aims to investigate cutting temperature behaviours of AISI H13 (48 HRC) under high speed machining circumstances during pocketing. The experiments were conducted on CNC vertical machining centre by using PVD coated carbide insert. Milling processes were done at cutting speeds 150, 200 and 250 m/min and feed rate were 0.05, 0.1 and 0.15 mm/tooth. Depths of cut applied were 0.1, 0.15 and 0.2 mm. Tool path m

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Obreja, Claudiu, Gheorghe Stan, Lucian Adrian Mihaila, and Marius Pascu. "Application of Tree Graph Method for Reducing the Total Time of Tool Changing in Milling and Boring Machine Tools." Applied Mechanics and Materials 371 (August 2013): 431–35. http://dx.doi.org/10.4028/www.scientific.net/amm.371.431.

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With a view of increasing the productivity on CNC machine tools one of the main solution is to reduce, as much as possible, the auxiliary time consumed with the set-up and replacement of the tools and work pieces engaged in the machining process. Reducing the total time of the tool changing process by the automatic tool changer system can be also achieved through minimizing the number of movements needed for the actual exchange of the tool, from the tool magazine to the machine spindle (the optimization of the tool changing sequences). This paper presents a new design method based on the tree-

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Xu, Guo Qiang, Zeng Wen Liu, Jun Wang, and Chuan Zhen Huang. "Characterization of KDP Crystal Surfaces from Single Point Diamond Milling." Advanced Materials Research 1136 (January 2016): 271–76. http://dx.doi.org/10.4028/www.scientific.net/amr.1136.271.

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Potassium Dihydrogen Phosphate (KDP) crystal is widely used in laser frequency multiplications and electro-optical modulators, but its soft-brittle property and thermal sensitive characteristic make it a very difficult-to-machine material. In this paper, an in-house made diamond tool with one tooth is used to face-mill KDP crystal specimens on a high-speed micro CNC machining centre, based on a statistically designed experiment. The morphology and roughness of the milled KDP crystal surfaces are analyzed with respect to the process parameters. It has been found that cutting speed has the large

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Speedie, James A., Ian Black, and James M. Ritchie. "Finding the Optimum Cutting Conditions for Face Milling 13% Manganese Steel Using the Taguchi Design Method and Predictive Equations." Advanced Materials Research 89-91 (January 2010): 527–32. http://dx.doi.org/10.4028/www.scientific.net/amr.89-91.527.

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In this paper, a methodology for determining the optimum machining parameters for a face mill operation is presented. Taguchi design of experiments was used in company with orthogonal arrays in order to study the effects and interactions that selected parameters had on the cutting behaviour. The parameters that were included in the study were cutting speed, feed rate, depth of cut and the effects of cutting fluid. Using the orthogonal array experimental runs were set up and carried out on specimens of metal plate on a CNC milling centre. The studied material was 13% Austenitic Manganese Steel.

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Choudhary, Atul, and Sant Ram Chauhan. "Application of response surface methodology to evaluate the effect of cutting tool inserts on machining of aluminium 7075 alloy on CNC turning centre." International Journal of Machining and Machinability of Materials 13, no. 1 (2013): 17. http://dx.doi.org/10.1504/ijmmm.2013.051906.

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