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Journal articles on the topic 'Machine-tools Machine-tools Machining'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

MATSUBARA, Atsushi, Motoyuki SUGIHARA, Ahmed A. D. SARHAN, Hidenori SARAIE, Soichi IBARAKI, and Yoshiaki KAKINO. "Research on Spindle and Machining Process Monitoring for Intelligent Machine Tools(Advanced machine tool)." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.2 (2005): 469–74. http://dx.doi.org/10.1299/jsmelem.2005.2.469.

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2

INOUE, Shinichi. "3408 Machining dynamics and machine tools." Proceedings of the JSME annual meeting 2008.4 (2008): 259–60. http://dx.doi.org/10.1299/jsmemecjo.2008.4.0_259.

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3

Shen, Xue Hong, and Hong Bing Zhao. "The Method of Transforming Ordinary Machine Tools to Ultrasonic Vibration Deep Hole Drilling Machine Tools." Applied Mechanics and Materials 541-542 (March 2014): 538–43. http://dx.doi.org/10.4028/www.scientific.net/amm.541-542.538.

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Ultrasonic vibration deep hole drilling is a kind of new technology for combining ultrasonic vibration with deep hole drilling. This paper mainly describes the transformation of lathe, vertical milling machine and vertical machining center by bits vibration direction or adding some auxiliary institutions, then make it have the ability of drilling deep hole. With these transformation, machine tools have some advantages, such as the efficiency and precision are improved, machining quality is stable, chip removal is easy, the cost is low. Besides, it also provides a good way for making full use o

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4

Nieszporek, Tadeusz, and Andrzej Piotrowski. "Parametric Programming of CNC Machine Tools." Applied Mechanics and Materials 282 (January 2013): 203–10. http://dx.doi.org/10.4028/www.scientific.net/amm.282.203.

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CNC machine tools are increasingly often used in industry, and the development of the methods of their programming is also proceeding. Modern multipurpose multi-axial machine tools are programmed using special CAD/CAM software programs. Universal special programs for controlling CNC machine tools can, however, be generated in programs written in high-level languages. An example can be the machining of gears on universal CNC machine tools using versatile machining tools.

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5

SAITO, Masataka, Yoshikazu KOBAYASHI, and Kenji SHIRAI. "Machining Load Prediction of a Machine Tools." Proceedings of Autumn Conference of Tohoku Branch 2003.39 (2003): 263–64. http://dx.doi.org/10.1299/jsmetohoku.2003.39.263.

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6

Zhu, Gao Feng, and Yan Lei Zhang. "Research on Error Compensation Techniques for NC Machine Tools." Applied Mechanics and Materials 321-324 (June 2013): 833–37. http://dx.doi.org/10.4028/www.scientific.net/amm.321-324.833.

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Cause of machining error for NC Machine Tools is described, and principle of NC machinings error compensation on the basis of the existing in-line detection model of NC machine tools is analyzed in this paper. Regularity of error Modeling based on multi-body system is found,accordingly, we will find the corresponding characteristic matrix and transformation matrix if location features and sport features of the adjacent body are confirmed. Then, formula of error model is found, and we can get numerical solution and compensate error according to the identified error parameter. As a result, the m

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7

Aurich, Jan C., Christopher Müller, Martin Bohley, Peter Arrabiyeh, and Benjamin Kirsch. "Recent Developments in Desktop-Sized Machine Tools." Solid State Phenomena 261 (August 2017): 425–31. http://dx.doi.org/10.4028/www.scientific.net/ssp.261.425.

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The miniaturization of components and the functionalization via micro structures demands for flexible and economic manufacturing processes. Micro machining, i.e. micro milling and micro grinding can meet these requirements. In this paper, desktop-sized machine tools and their components that were developed at our institute are presented. With those machine tools, micro tools can be machined and used in one clamping, allowing for increased machining quality. Grooves milled with such machine tools achieve a bottom surface roughness below 10 nanometer.

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8

Yamada, Makoto, Tsukasa Kondo, Fumiki Tanaka, and Takeshi Kishinami. "Tilted Tool Axis Machining on 5-Axis Machine Tools." International Journal of Automation Technology 1, no. 2 (2007): 120–27. http://dx.doi.org/10.20965/ijat.2007.p0120.

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High-efficiency machining and high-quality cutting are required in mold and die machining. To produce high-quality molds and dies, we require high rigidity for cutting tools and machining with effective cutting edges. We propose tilted tool axis machining, which involves indexing using 2-axis rotary motion and machining using 3-axis feed motion on a 5-axis machining center. To conduct tilted tool axis machining by ball end mill, we must know the tool attitude to ensure stable cutting and how to control the tool attitude to stable cutting conditions. Our main objective was to clarify the tool a

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9

Rahou, Mohamed, Fethi Sebaa, Abdelmadjid Cheikh, and Sid Ahmed Benmansour. "Error compensation in NC machine tools." Global Journal of Computer Sciences: Theory and Research 7, no. 1 (2017): 24–30. http://dx.doi.org/10.18844/gjcs.v7i1.2694.

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This work contributes to the development of new approaches to tolerancing for machining using a machine tool with digital control. Our research is focused in two directions. First, it focuses on the manufacturing tolerances. The aim was to establish procedures for validating ranges of light manufacturing dispersions, manufacturing errors and machine tools with digital control, and cover various types of critical tolerances targeted. The second deals with design tolerances, for which we proposed a method for calculating functional tolerances. Keywords: Errors, tolerance, manufacturing.

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10

Guo, Lei, Hui Zhang, and Xin Chun Lu. "Dimension Optimization of Machine Tools' Components." Applied Mechanics and Materials 312 (February 2013): 177–81. http://dx.doi.org/10.4028/www.scientific.net/amm.312.177.

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Light weight design without loss of stiffness may reduce the cost and promote the performance of machine tools. A new dimension optimization method is promoted to optimize the vertical slide of a horizontal machining center. The influence of the cross section dimensions to the stiffness and mass is analyzed. A program is compiled to search the minimum weight of the vertical slide with sufficient stiffness. Finite element analysis is used to validate the stiffness of the new design. The result shows that the method is effective in machine tools' components design.

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11

Oda, Yohei, Makoto Fujishima, and Yoshimi Takeuchi. "Energy-Saving Machining of Multi-Functional Machine Tools." International Journal of Automation Technology 9, no. 2 (2015): 135–42. http://dx.doi.org/10.20965/ijat.2015.p0135.

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The purpose of the study described in this paper was to develop an energy-saving strategy for machining of multi-functional machine tools by pairing various turning and milling processes with various cutting conditions. The amounts of electric energy consumed during turning, facing, end milling, and drilling were measured and analyzed. Based on the experimental results, the most efficient machining processes and methods for reducing electric energy were identified. It was found to be important to employ severe cutting conditions as much as possible and to reduce the electric energy associated

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12

Korostelev, D., D. Yaminsky, and I. Yaminsky. "Machine Tools and machining centers for Russian nanoindustry." Nanoindustry Russia, no. 3 (2015): 60–68. http://dx.doi.org/10.22184/1993-8578.2015.57.3.60.68.

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13

Fan, Kuang-Chao, Hsi-Ming Chen, and Tzu-Hsin Kuo. "Prediction of machining accuracy degradation of machine tools." Precision Engineering 36, no. 2 (2012): 288–98. http://dx.doi.org/10.1016/j.precisioneng.2011.11.002.

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14

SENDA, Harumitsu. "Technology for Intelligent Machine Tools and Machining Example." Journal of the Japan Society for Precision Engineering 78, no. 9 (2012): 748–51. http://dx.doi.org/10.2493/jjspe.78.748.

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15

FUJISHIMA, Makoto, Masahiko MORI, Koichiro NARIMATSU, and Naruhiro IRINO. "UTILISATION OF IOT AND SENSING FOR MACHINE TOOLS." Journal of Machine Engineering 19, no. 1 (2019): 38–47. http://dx.doi.org/10.5604/01.3001.0013.0447.

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Strong requirements for automation in the production processes using machine tools have been increasing due to lack of high-skilled machining engineers. Automation used to be utilised in mass production, but it is also necessary in medium- to low-volume production recently. Next requirements will be monitoring or sensing functions to make the following possible: prompt service when the machine stops; detection of abnormality before the machine breaks down; and compensation of thermal displacement to ensure machining accuracy. These now need to be performed automatically in place of operators s

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16

Shi, Rong Bo, Zhi Ping Guo, and Zhi Yong Song. "Research of On-Line Monitoring Technology of Machining Accuracy of CNC Machine Tools." Advanced Materials Research 846-847 (November 2013): 268–73. http://dx.doi.org/10.4028/www.scientific.net/amr.846-847.268.

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This paper analyzes CNC machine tools machining error sources, put forward a kind of on-line monitoring technology of CNC machine tools machining accuracy based on online neural network. Through the establishment of CNC machine tools condition monitoring platform, collection sensor signal of the key components of CNC machine tools, using time domain and frequency domain method of the original signal processing, extract the characteristic related to machining accuracy change, input to the neural network, identification the changes of machining accuracy. The experimental results show that, the o

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17

Zhou, Quan, and Kai Liu. "Fault Diagnosis of CNC Machine Tools Common." Advanced Materials Research 317-319 (August 2011): 1882–85. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.1882.

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CNC machining is a mechanical and electrical integration in the field of typical products , it’s complex structure and variety.To be able to troubleshoot quickly and accurately,reduce economic losses caused by the failure,require staff not only need to have a wealth of theoretical knowledge and practical experience,must also possess a certain amount of fault diagnosis.

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18

Wang, Chen Sheng, Tjamme Wiegers, and Joris S. M. Vergeest. "An Implementation of Intelligent CNC Machine Tools." Applied Mechanics and Materials 44-47 (December 2010): 557–61. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.557.

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Improving the machining efficiency of CNC machine tools by introducing intelligence is now gaining more attention from both researchers and entrepreneurs. Based on the assessment of existing strategy of intelligent machine tool design, an implementation and preliminary evaluation of an intelligent CNC lathe has been reported in this paper. Techniques discussed in this paper are expected to benefit CNC machine tool researchers and designers in terms of the development of intelligent CNC machine tools.

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19

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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20

Xin, Yupeng, Xitian Tian, and Lijiang Huang. "Optimal Machine Tools Selection Using Interval-Valued Data FCM Clustering Algorithm." Mathematical Problems in Engineering 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/921647.

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Machine tool selection directly affects production rates, accuracy, and flexibility. In order to quickly and accurately select the appropriate machine tools in machining process planning, this paper proposes an optimal machine tools selection method based on interval-valued data fuzzy C-means (FCM) clustering algorithm. We define the machining capability meta (MAE) as the smallest unit to describe machining capacity of machine tools and establish MAE library based on the MAE information model. According to the manufacturing process requirements, the MAEs can be queried from MAE library. Subseq

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21

Song, R. J., J. L. Niu, and Dong Hai Chen. "Current Development and Countermeasure of Ultra-Precision Machine Tools." Key Engineering Materials 455 (December 2010): 632–36. http://dx.doi.org/10.4028/www.scientific.net/kem.455.632.

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Ultra-precision machine tools is an important machinery equipment to implement ultra-precision machining. Current development and the trend of the ultra-precision machine tools was analyzed. The factors influencing machining accuracy were pointed out from the viewpoint of system. Some suggestions were put forward on the domestic development and research of the ultra-precision machine tools.

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22

Mekid, Samir. "Micro Machining Issues: Design and Machining Process." Advanced Materials Research 739 (August 2013): 238–44. http://dx.doi.org/10.4028/www.scientific.net/amr.739.238.

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Numerical controlled high speed micromachining on desktop machines is known to induce inherently new types of errors and machining issues at micro scale. The sources of these errors are either not known, or difficult to be modeled. Some of these errors are due to the downscaling effect of machine elements to a small micro-machine. This paper attempts to explore key issues proper to micro machines that are different from standard scale NC machine tools. Experimental observations are shown to support the discussion. The knowledge gained from these phenomena is used to nurture the design methodol

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23

Wąsik, Mateusz, Krzysztof Lis, Krzysztof Lehrich, and Łukasz Mucha. "Model-Based Dynamic Structural Modification of Machine Tools." Shock and Vibration 2018 (May 30, 2018): 1–9. http://dx.doi.org/10.1155/2018/3469171.

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The article proposes modification of machine tool structures methodology on the example of a body of vertical milling centre stand. It is based on the results of experimental research and allows for the prediction of dynamic features of individual bodies and complete structures on the basis of the described modal model. It takes into account the possibility of mass change at the model node and the introduction of additional rigidity and damping by a combination of selected nodes of the model. The methodology can be applied in the case of machine tools in which the loss of stability has been fo

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24

Nakamoto, Keiichi, and Yoshimi Takeuchi. "Recent Advances in Multiaxis Control and Multitasking Machining." International Journal of Automation Technology 11, no. 2 (2017): 140–54. http://dx.doi.org/10.20965/ijat.2017.p0140.

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This paper presents an overview of recent advances in multiaxis control and multitasking machining, the machine tools’ kinematic configurations, and the supporting and cutting technologies used for complex form shaping. The functions of the metal cutting machine tools have been expanded to meet high productivity and high accuracy requirements for machining complicated and difficult parts on a single machine. Among these functions, the increase in the number of controlled axes and the multitasking capability in one chucking process enable machine tools to manufacture complex products efficientl

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25

TSUTSUMI, MASAMI. "Interface technology for high machining speeds in machine tools." Journal of the Japan Society for Precision Engineering 53, no. 7 (1987): 1015–17. http://dx.doi.org/10.2493/jjspe.53.1015.

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26

Abdul Kadir, Aini, Xun Xu, and Enrico Hämmerle. "Virtual machine tools and virtual machining—A technological review." Robotics and Computer-Integrated Manufacturing 27, no. 3 (2011): 494–508. http://dx.doi.org/10.1016/j.rcim.2010.10.003.

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27

Lin, Rong-Shine, and Yoram Koren. "Ruled Surface Machining on Five-Axis CNC Machine Tools." Journal of Manufacturing Processes 2, no. 1 (2000): 25–35. http://dx.doi.org/10.1016/s1526-6125(00)70010-7.

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28

NAKAMURA, Koushi, Nobuhiro SUGIMURA, and Naoki SATONAKA. "615 Analysis of machining accuracy of complex machine tools." Proceedings of Conference of Kansai Branch 2009.84 (2009): _6–15_. http://dx.doi.org/10.1299/jsmekansai.2009.84._6-15_.

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29

Froncki, Wiesław. "Closed hydrostatic guides in machine tools for abrasive machining." Mechanik, no. 8-9 (September 2015): 710/96–710/99. http://dx.doi.org/10.17814/mechanik.2015.8-9.350.

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30

Brecher, C., F. du Bois-Reymond, J. Nittinger, et al. "Qualifying multi-technology machine tools for complex machining processes." CIRP Journal of Manufacturing Science and Technology 13 (May 2016): 1–14. http://dx.doi.org/10.1016/j.cirpj.2015.11.001.

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31

Tapie, L., K. B. Mawussi, and B. Anselmetti. "Circular tests for HSM machine tools: Bore machining application." International Journal of Machine Tools and Manufacture 47, no. 5 (2007): 805–19. http://dx.doi.org/10.1016/j.ijmachtools.2006.06.021.

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32

Szulewski, Piotr, and Dominika Śniegulska-Grądzka. "Systems of automatic vibration monitoring in machine tools." Mechanik 90, no. 3 (2017): 170–75. http://dx.doi.org/10.17814/mechanik.2017.3.37.

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The paper illuminates and discusses some examples of process status monitoring systems in machining. The special techniques based on advanced signals analysis from force sensors, accelerometers, or acoustic emissions are used to detect of chatter vibrations. Monitoring systems could also co-operate with CNC controllers for effective vibration elimination by changing process parameters.

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33

Huang, Qi Hong. "Five-Axis Machining Method of Complicated Curved Surface." Advanced Materials Research 915-916 (April 2014): 1005–8. http://dx.doi.org/10.4028/www.scientific.net/amr.915-916.1005.

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Five-axis CNC machine tools are constituted by three-axis machine tools and two rotational degrees of freedom. Using the two rotary axes, five-axis CNC machine tools can improve the accessibility and become an important means of machining complex surface parts. In order to get high tapered complicated curved surface parts, a dual turntable five-axis machine with A-C tables was introduced and the mathematical models of the CNC processing of the workpiece were established. Through machining experiment of the several major processed forms, it shows that the dual turntable five-axis machine system

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34

Li, Lian Yu, and Jian Dong Li. "Research on Simulation and Optimization of Dynamic Path Error of NC Machine Tools." Applied Mechanics and Materials 397-400 (September 2013): 494–500. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.494.

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Based on the introduction of the control principle of path machining of NC machine tools, this paper studies and simulates the dynamic path error of machine tools. Simulation result shows that the dynamic path error is related to the path curvature and the feed speed of machine tools. In the case that the path curvature has been set, this paper proposes a variable feed speed strategy to optimize the dynamic path error of NC machine tools. The comparison simulation result shows that this strategy can decrease dynamic path error and improve the machining precision effectively.

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35

Wang, Zhiming, and Hao Yuan. "Enhancing machining accuracy reliability of multi-axis CNC machine tools using an advanced importance sampling method." Eksploatacja i Niezawodnosc - Maintenance and Reliability 23, no. 3 (2021): 559–68. http://dx.doi.org/10.17531/ein.2021.3.17.

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The purpose of this paper is to propose a general precision allocation method to improve machining performance of CNC machine tools based on certain design requirements. A comprehensive error model of machine tools is established by using the differential motion relation of coordinate frames. Based on the comprehensive error model, a reliability model is established by updating the primary reliability with an advanced importance sampling method, which is used to predict the machining accuracy reliability of machine tools. Besides, to identify and optimize geometric error parameters which have

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36

Nakaminami, Masamitsu, Tsutomu Tokuma, Toshimichi Moriwaki, and Keiichi Nakamoto. "Optimal Structure Design Methodology for Compound Multiaxis Machine Tools - I - Analysis of Requirements and Specifications -." International Journal of Automation Technology 1, no. 2 (2007): 78–86. http://dx.doi.org/10.20965/ijat.2007.p0078.

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The functionality of compound multiaxis machine tools is becoming increasingly versatile as NC lathes evolve. A single compound multiaxis machine tool functions as a 2-axis NC lathe and as a 5 axis machining center. The compound multiaxis machine tool executes machining such as inclined surface and gear cutting, conventionally executed by dedicated machines with special jigs and fixtures. A survey has shown that most machining executed by conventional compound multiaxis machine tools consists of basic drilling and milling on the orthogonal plane, indicating that compound multiaxis machine tool

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37

Moon, Yong-Mo, and Sridhar Kota. "Generalized Kinematic Modeling of Reconfigurable Machine Tools." Journal of Mechanical Design 124, no. 1 (1998): 47–51. http://dx.doi.org/10.1115/1.1424892.

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To accommodate frequent changes in product design and to be able to process a family of products in a timely and cost-effective manner, the next generation of machine tools should be reconfigurable. Reconfigurability enables reduction not only in machine design lead time but more significantly a reduction in machine set-up and ramp-up time. The essential characteristics of Reconfigurable Machine Tools (RMTs) include modularity, convertibility, flexibility, and cost-effectiveness. This paper presents a mathematical representation scheme using screw theory that lays the foundation for systematic

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38

Mori, Kotaro, Daisuke Kono, Iwao Yamaji, and Atsushi Matsubara. "Support Placement for Machine Tools Using Stiffness Model." International Journal of Automation Technology 9, no. 6 (2015): 680–88. http://dx.doi.org/10.20965/ijat.2015.p0680.

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The support stiffness model and the stiffness tuning technique are applied to a practical situation. The support stiffness model is integrated with finite element analysis (FEA) to simulate the rocking vibration mode. The support stiffness of a machining center prototype is calculated based on the support stiffness model. The stiffness tuning technique is used to determine the placement of support structures in the simulation. The calculated support stiffness is integrated into a three dimensional model as springs. Rocking vibration modes are obtained from simulations by using the support stif

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39

Schofield, S., and P. Wright. "Open Architecture Controllers for Machine Tools, Part 1: Design Principles." Journal of Manufacturing Science and Engineering 120, no. 2 (1998): 417–24. http://dx.doi.org/10.1115/1.2830142.

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In Part 1 of this two-part paper, we review the development of open architecture controllers for machine tools. General design principles are described, followed by specific hardware and, software recommendations. These specific recommendations are then used for the construction of an open architecture device, MOSAIC-PM, (Machine tool Open System Advanced Intelligent Controller for Precision Machining). The machine has now been used in a wide variety of experiments to demonstrate open architecture control. These experiments include sensor based machining, rapid prototyping and manufacturing ov

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40

Zheng, Dong Xi. "The Error Analysis of Surface Machining on the CNC Machine Tools." Applied Mechanics and Materials 494-495 (February 2014): 681–84. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.681.

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The surface machining is more and more in modern manufacturing, it is able to machine the high precision surface by CNC machine tools, but there are many cutting errors yet. To reduce the cutting errors in surface machining effectively, the paper analyzed the errors of surface machining by flat milling cutter on theory, it found the main reasons of cutting errors in machining the surface, and got the method to compensate the errors, so it provided the theoretical basis of compensation algorithm of cutting errors in the machining the surfaces.

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41

Li, Tie Gang, Dong Mei Liu, Zhi Guang Fan, Chun Lin Fu, and Wan Shan Wang. "Design of a Generic Postprocessor Based on UG." Advanced Materials Research 335-336 (September 2011): 625–28. http://dx.doi.org/10.4028/www.scientific.net/amr.335-336.625.

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With the development of NC machine tool and NC machining, the postprocessor is play a vital role increasingly, which is an interface of operations in CAM and NC machine tools transformed cutter location data into machining control data. The general kinematics model of various machine tools was constructed by analysis of machine tools configuration and NC control systems. The coordinates were of machining files calculated using Coordinate transformation matrix in the process of post-processing. Finally, a postprocessor develop by VC++ and secondary development tool in UG, through the implementa

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42

Hu, Zhan Qi, Ya Fei Xie, and Jin Chao Liu. "The Research of Super-Heavy CNC Machine Accuracy Reliability Based on Multi-Body Kinematics." Advanced Materials Research 211-212 (February 2011): 115–21. http://dx.doi.org/10.4028/www.scientific.net/amr.211-212.115.

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In order to solve the key technical problem in maintenance and repairing of heavy CNC machine tools, the concept of precision reliability and its forecasting module are proposed. The method is especially used for researching of reliability of heavy machine tools of which the samples are not enough for statistical methods. Firstly, spatial error module is established for a type of super heavy mill &boring machine tool based on multy-body kinematics. Then, the effect of wearing amount of kinematic pair of machine tools on machining precision is researched. Therefore forecasting modules for m

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43

Zhang, Xiang, Zhen Yu Han, Ya Zhou Sun, and Hong Ya Fu. "Equipments and Strategies of Machining 3D Meso-Scale Parts." Key Engineering Materials 431-432 (March 2010): 78–81. http://dx.doi.org/10.4028/www.scientific.net/kem.431-432.78.

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Currently machine tools and strategies researched in micro-milling field universally cannot be applied to 3D meso-scale parts machining directly, so great importance should be attached to the research on 5-axis machine tools and the suitable strategies for 3D meso-scale machining. This paper introduced a self-made 5-axis machine tool and several micro-milling strategies which were applicable to 3D meso-scale parts machining. Using these strategies, a mini impeller was successfully machined on the 5-axis machine tool developed independently. The experiment result showed the machine tool and the

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44

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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45

Batke, Christoph, Karl Heinz Wurst, Armin Lechler, and Alexander Verl. "The Printed Machine Tool for Micro Machining." Advanced Materials Research 1018 (September 2014): 433–40. http://dx.doi.org/10.4028/www.scientific.net/amr.1018.433.

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Machine tools for micro machining are so far not adapted to work piece sizes and process forces. They feature hardly any modularity and do not allow reconfiguration in a significant process change. One possibility to adapt the machines is to produce them from plastic or composite materials through generative methods. This “printed” machine is a reconfigurable, monolithic module, in which drives are integrated. By a cooperative motion generation, larger workspaces can be realized while the installation spaces decreases. This gives the possibility to use alternative drive technologies for exampl

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Aoyama, Tojiro. "Mini Special Issue on Machining Control and Process Monitoring." International Journal of Automation Technology 8, no. 6 (2014): 791. http://dx.doi.org/10.20965/ijat.2014.p0791.

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Control and process monitoring are key technologies supporting high machining accuracy and efficiency. This special issue features six papers taking novel approaches to controlling machine and cutting tools and monitoring the machining process. The motion control of machine tools and cutting tools are introduced. A new challenge for monitoring the machining process by referring to NC control servo signals implements a practical proposal. The precise identification of friction at driving elements of machine tool components is an important factor in improving machine tool control motion accuracy

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Fujishima, Makoto, Takashi Hoshi, Hiroki Nakahira, Masafumi Takahashi, and Masahiko Mori. "Machine Tool Service for Mass-Production Machining Systems." International Journal of Automation Technology 12, no. 4 (2018): 507–13. http://dx.doi.org/10.20965/ijat.2018.p0507.

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Mass-production machining systems that are comprised of machine tools are often configured in series by dividing the machining processes in order to manage the large production volume. This indicates that if one of the machines stops owing to a mechanical malfunction, the entire production line needs to be stopped. Thus, machine tools in mass-production systems are required to be highly reliable and easy to maintain. Predictive maintenance, which enables operators to detect any signs of failure in the machine tool components, needs to be performed for the machines as well. In this work, variou

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STRYCZEK, Roman, and Wojciech SZCZEPKA. "SIMULATION TESTS OF ADAPTIVE CONTROL STRATEGIES FOR CNC MACHINE TOOLS." Journal of Machine Engineering 19, no. 2 (2019): 73–82. http://dx.doi.org/10.5604/01.3001.0013.2225.

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The issue addressed in the article concerns the current needs and possibilities of computer-aided design of adaptive control strategies in machining processes. A simulative method of selecting the adaptive feed control strategy while rough turning materials difficult to machine, effective and inexpensive in its implementation, based on controlling the load placed on the machine's drives, has been presented. The results of a number of virtual tests of the proposed feed control strategy have been included, while paying particular attention to the stability of the machining process during moments

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Huang, Xue Mei, Li Hong Zhao, and Yong Xiang Tong. "Virtual Machining Environment Construction in Vericut for Process Planning." Applied Mechanics and Materials 668-669 (October 2014): 1629–32. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.1629.

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Virtual machining environment in Vericut was proposed with purpose of enhancing process planning practice training for undergraduates. Main issues include construction of virtual manufacturing resource library and virtual machining process execution environment for planned process. Virtual manufacturing resource library is composed of virtual and digital models for diverse kinds of machine tools. Type determination and classification principle of machine tools and virtual equipment modeling method in the proposed environment are studied. Virtual machining for particular process by multi setup

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Ihara, Yukitoshi. "Ball Bar Measurement on Machine Tools with Rotary Axes." International Journal of Automation Technology 6, no. 2 (2012): 180–87. http://dx.doi.org/10.20965/ijat.2012.p0180.

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A ball bar is a very convenient device for measuring the motion accuracy of machine tools. Some trials have also been done for measuring motion accuracy of industrial robots. Nowadays, multi-axis machines such as five-axis machining centers are very popular, and therefore, there is increased demand for checking their accuracy. This paper introduces an idea for checking the motion accuracy of five-axis machining centers and diagnosing error sources by reviewing trial measurements on articulated industrial robots. There are two problems. The first problem is that the ball bar can measure only di

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