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Journal articles on the topic 'Lathes'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 July 2024

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1

Peng, Chong, Lun Wang, Yu Jie Meng, and Li Yun Lan. "The Design of Demountable Modular Milling Attachment Based on Engine Lathes." Applied Mechanics and Materials 347-350 (August 2013): 1224–28. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.1224.

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This paper analyzes the limitation of engine lathes during manufacturing process because of its structural constraints, and designs the demountable modular attachment based on engine lathes. According to the analysis of the cutting process, an appropriate cutter drive servo motor is selected. Combined with the transmission range of tool rotational speed, transmission program is made and its parameters are determined. According to the transmission program, the actual tool change request and mounting dimensions of engine lathes, this paper designs and optimizes the structure of the power transmission device and the tool change device. Eventually the milling attachment is mounted to the engine lathe by the connecting device, reaching the demand of optimizing the working range of the engine lathe, realizing the turn-milling machining and raising fabrication efficiency and accuracy.

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2

Heimers, Uwe, Martin Kupp, and Ulli T. Reitz. "Gildemeister Lathes Ltd." Journal of Business & Industrial Marketing 21, no. 2 (February 2006): 118–23. http://dx.doi.org/10.1108/10610420610651340.

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3

Mamajonovich, Alisher Mamajonov, and Buronov Mizrob Ikrom O`Gli. "DEVICES FOR DIMENSIONAL ADJUSTMENT OF THE CUTTING OF LATHE MACHINES." European International Journal of Multidisciplinary Research and Management Studies 02, no. 10 (October 1, 2022): 105–10. http://dx.doi.org/10.55640/eijmrms-02-10-19.

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In this paper, the factors affecting the processing accuracy of lathes are examined. The paper highlights their environments, the dominant factors that have the greatest influence on the processing accuracy. The possibilities of increasing the processing accuracy on existing lathes by eliminating the influence of dominant factors on the processing accuracy is analyzed. The authors describes the place and value of the dimensional adjustment of the cutting edge of lathes while ensuring the accuracy of processing of parts such as a body of revolution, a method and a schematic diagram of a device for precision adjustment of the cutters of a lathe to the size to be machined are proposed in this paper.

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4

B, Mr Gaurav. "Modify and Convert Conventional Lathe Machine to Special Purpose Lathe Machine Operated using CNC Unit." International Journal for Research in Applied Science and Engineering Technology 11, no. 5 (May 31, 2023): 6696–702. http://dx.doi.org/10.22214/ijraset.2023.53227.

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Abstract: Products are manufactured using modern technology nowadays that uses communication between computer software, hardware and firmware, and lathes play an important role in production. While manual machine lathes are more economical, they have to be made by skilled workers, which limits their precision and poor performance, on the other hand, CNC machines provide the accurate and good results needed, but cost a lot of money. This can be done using ARM. The processor is used to control the work of the lathe. Retrofit is a way to use new technologies and features to improve the performance and security of legacy systems. Since the machining process takes a long time, retrofit applications can be made on traditional lathes. Also, in this traditional turning job, the results are not the same as the result of the work piece depends on the skill of the operator. For this reason, a new design has been created to maintain this lathe and increase its lifespan. Rebuilding and remanufacturing often involves CNC rebuilds.

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5

Billingham, Ray. "From lathes to lasers." Manufacturing Engineer 69, no. 7 (1990): 17. http://dx.doi.org/10.1049/me:19900154.

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6

Yurkevich, V. V. "Vibrational tests of lathes." Russian Engineering Research 32, no. 5-6 (May 2012): 496–97. http://dx.doi.org/10.3103/s1068798x12050255.

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7

Karyadi, Edi, Rusadi Rusadi, Hadimi Hadimi, and Tri Widayanti. "Metrological Analysis of Sphericity Geometry to Lathe Conditions at the Mechanical Technology Laboratory of the Department of Mechanical Engineering Politeknik Negeri Pontianak." Vokasi: Jurnal Publikasi Ilmiah 18, no. 2 (December 31, 2023): 71–75. http://dx.doi.org/10.31573/jv.v18i2.683.

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This research was conducted on the premise that the age of using lathes in the Mechanical Technology Laboratory of the Department of Mechanical Engineering Pontianak State Polytechnic has been more than 30 years since this Polytechnic was established. It is predicted that the resulting workpiece is not exactly sized by the tolerance limit given to students. This research was conducted by measuring geometry (geometric metrology) on lathes used by the Department of Mechanical Engineering students during machining practice. This study aims primarily to see whether there has been a significant deviation / beyond the allowable tolerance limit on the lathe used by students of the Pontianak State Polytechnic Mechanical Department, this research will later be able to take benefits that have to do with improving the skills of students of the Pontianak State Polytechnic Mechanical Engineering Department. Data obtained based on direct experiments on the object under study, the data obtained are processed with several analytical techniques by the variables studied, namely roundness analysis. The results showed that the tolerance of sphericity deviations in lathes MB 2 = 64 μm, can produce workpieces with tolerance values above 64 μm (IT 10). On lathes MB 2 = 84 μm, it can produce workpieces with tolerance values above 84μm (IT 10). Lathe MB 3 = 50 μm, can produce workpieces with tolerance values above 50 μm (IT 9). While the MB 4 lathe tolerance of the deviation of the roundness is 92 μm, it can produce workpieces with tolerance values above 92 μm (IT 11). While the lathe MB 5 tolerance of the deviation of roundness is 80 μm (IT 10), it can produce workpieces with tolerance values above 80 μm. Because these machines are still used for education, especially the implementation of practicum in machining process courses and production activities, improvements should be made to improve their performance.

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8

Безъязычный, Вячеслав, Vyacheslav Bezyazychnyy, Александр Чукарин, Aleksandr Chukarin, Павел Чумак, Pavel Chukarin, Денис Куклин, Denis Kuklin, Александр Сутягин, and Aleksandr Sutyagin. "Sliding block vibrations when turning." Science intensive technologies in mechanical engineering 2018, no. 11 (December 8, 2018): 3–8. http://dx.doi.org/10.30987/article_5bd8ab4233c8d4.32366481.

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

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9

Tachiya, Hiroshi, Hiroki Hirata, Takayuki Ueno, Yoshiyuki Kaneko, Katsuhiro Nakagaki, and Yoshiaki Ishino. "Evaluation of and Compensation for Thermal Deformation in a Compact CNC Lathe." International Journal of Automation Technology 6, no. 2 (March 5, 2012): 137–46. http://dx.doi.org/10.20965/ijat.2012.p0137.

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Because heat sources for compact Computer Numerically Controlled (CNC) lathes are likely to be closely arranged, they may cause large and complicated thermal deformation. Previously, we developed a CNC lathe with its heat sources arranged so as to reduce thermal deformation. This lathe achieved highprecision work under stable temperatures in continuous operation. However, in some cases, it could cause rapid thermal deformation. Previously, we proposed a simple method to compensate for the thermal deformation in CNC lathes by measuring temperatures at only a few points. By developing amodified compensation method capable of estimating minute and complicated thermal deformation and applying this method to the current lathe, processing accuracy will become more precise. Thus, we evaluated the thermal deformation of a compact CNC lathe. As a result, we found that the thermal deformation of the lathe was caused not only by movable parts, such as the spindle motor, but also by non-movable parts, such as the hydraulic unit. We therefore approximated the thermal deformation caused by the non-movable parts and estimated the change in the deformation caused only by the movable parts. This enabled us to express the thermal deformation by a simple linear equation, the form of which was same as that used for previous lathes. From these results, we were able to compensate for the thermal deformation using approximate equations for both movable and non-movable parts and we applied this method to the current lathe. We confirmed that the work error can be reduced under stable conditions using this method.

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10

Бренгауз, Александр, Aleksandr Brengauz, Александр Молчанов, Aleksandr Molchanov, Сергей Досько, Sergey Dosko, Павел Быков, and Pavel Bykov. "MODAL VIBRATION DIAGNOSTICS OF LATHES DESIGNS." Bulletin of Bryansk state technical university 2016, no. 3 (September 30, 2016): 184–90. http://dx.doi.org/10.12737/22079.

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In the paper the problem of reasons elucidation in the matter of lathe instability at groove cross turning and boring is solved. As a tool for the analysis of a structure state there are used potentialities of modal monitoring, and in particular, a correlation of modal parameters, sets of proper characteristics of an elastic system (self-frequencies, modal coefficients damping and own forms of vibrations) of lathes designs with the state of bearings in spindle units. The application of a modal approach to the evaluation of a lathe design state or an elastic system is a new section in a dynamic analysis and may be called modal diagnostics. From the analysis of the modal parameter values of a lathe one traces their tie with the lathe design characteristics, and in particular, with the existence of sever rigidity anisotropy of a spindle unit front bearing and also with its insufficient tightness. Reasoning from the information mentioned of the modal parameters connection with the rigidity of a spindle unit front bearing and a state of bearing design the authors draw a conclusion of the technological state of a spindle unit design. In such a way, by the example of the design of two lathes in the paper there is shown a possibility of transition from experimental frequency characteristics through a procedure of modal diagnostics to the evaluation of the technological state of a spindle unit.

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11

Pini, B. E., Y. V. Maksimov, and P. A. Lebedev. "The turrets lathes with additional drive of rotation axial tools." Izvestiya MGTU MAMI 7, no. 2-2 (March 20, 2013): 366–70. http://dx.doi.org/10.17816/2074-0530-68403.

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Additional rotation tools in the turret lathe is using devices with complex kinematics, so proposed and is considered a simple and reliable construction of axial rotation of the drive tool for turret lathes.

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12

Weiskott, E. "Beowulf 2910a 'leofes ond lathes'." Notes and Queries 62, no. 2 (April 27, 2015): 188–90. http://dx.doi.org/10.1093/notesj/gjv034.

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13

Sankin, Yu N., V. I. Zhiganov, R. Sh Khalimov, and S. V. Zhiganov. "Dynamic Improvement of Precision Lathes." Russian Engineering Research 33, no. 2 (February 2013): 96–99. http://dx.doi.org/10.3103/s1068798x13020196.

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14

Akmaev, O. K., and B. A. Enikeev. "Multipurpose lathes with expanded capabilities." Russian Engineering Research 33, no. 12 (December 2013): 710–13. http://dx.doi.org/10.3103/s1068798x13120034.

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15

Ignatyev, Alexander Anatolevich, Irina Pavlovna Nasad, and Tat'yana Gennadievna Nasad. "Modeling lathe dynamic system in terms of estimated dampening coefficient of autocorrelation function of oscillations." Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics 2023, no. 2 (April 28, 2023): 17–22. http://dx.doi.org/10.24143/2072-9502-2023-2-17-22.

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Part machining on the lathes with automated tools is a complex process that depends on the properties of the lathe dynamic system. Oscillations in processing the main parts determine the dynamic quality of the lathes, quality of the surface layer and resistance of the cutting tool, therefore, it is necessary to identify the methods to control the operation mode. Increased efficiency of the process is provided by the forced cutting modes, which can lead to the deterioration of processing quality and premature wear of a cutting tool. Theoretical definition of rational cutting modes causes certain difficulties, so the experimental search for a solution to the problem is most urgent. In order to select rational cutting modes on the lathes and grinding machines, it is proposed to use the stability margin of the lathe dynamic system (DS), which should be determined from the transfer function of DS using the autocorrelation function (ACF) of oscillations. A condition for identification of the lathe DS is a preliminary identification of ACF, which can be implemented using oscillation records during cutting. Pre-filtering of oscillations is carried out to exclude low-frequency range containing frequencies caused by oscillations of lathe system elements and to save frequencies associated with the cutting process. Cut modes are assigned to the highest stability margin, which ensures high surface quality. There is an unambiguous ana-lytical relationship between the oscillation index and the damping coefficient of the ACF, which makes it possible to calculate the α coefficient, by the value of which it is possible to estimate the stability margin of the ET in different cutting modes and select the most appropriate one. Studying the lathe oscillations in processing high-precision parts makes it possible to control the technological mode, using the oscillation level as one of the indicators of its quality.

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16

Vedernikov, Yu A., N. A. Chemborisov, and M. A. Pokrovskii. "Modernization of universal lathes and numerically controlled lathes for cutting screw surfaces of progressive pitch." Russian Engineering Research 31, no. 3 (March 2011): 280–82. http://dx.doi.org/10.3103/s1068798x11030282.

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17

Trung, Do, Nguyen Truong, and Hoang Thinh. "Combined PIPRECIA method and modified FUCA method for selection of lathe." Journal of Applied Engineering Science 20, no. 4 (2022): 1355–65. http://dx.doi.org/10.5937/jaes0-39335.

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The choice of technological equipment in general or lathe in particular has a great influence on the efficiency of the machining processes. Lathes are often evaluated by many criteria, both quantitative and qualitative. Sometimes the criteria employed by the methods are opposite to each other. Hence the choice of lathe is usually made through the evaluation of multiple criteria, which is known as "Multi-Criteria Decision Making - MCDM". In the research was used PIPRECIA method to determine the weights of the criteria. Modifications to FUCA method were then implemented. The combination of PIPRECIA method and the modified FUCA method were applied to the lathe selection in two cases. In both cases the best and worst alternatives were determined in the same way as when using the CURLI method. This confirms the correct implementation of the FUCA method modification, and the combination of PIPRECIA and the modified FUCA method turns out to be a right approach in the selection of lathes. Details that need to be considered in future research were also mentioned in this study.

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18

Zhang, Yingzhi, Guiming Guo, and Jialin Liu. "Fault Root Cause Tracking of the Mechanical Components of CNC Lathes Based on Information Transmission." Sensors 23, no. 9 (April 30, 2023): 4418. http://dx.doi.org/10.3390/s23094418.

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This study proposes a new method for the immediate fault warning and fault root tracing of CNC lathes. Here, the information acquisition scheme was formulated based on the analysis of the coupling relationship between the mechanical parts of CNC lathes. Once the collected status signals were de-noised and coarse-grained, transfer entropy theory was introduced to calculate the net entropy of information transfer between the mechanical parts, after which the information transfer model was constructed. The sliding window method was used to determine the probability threshold interval of the net information transfer entropy between the lathe mechanical parts under different processing modes. Therefore, the transition critical point was determined according to the information entropy, and the fault development process was clarified. By analyzing the information transfer changes between the parts, fault early warning and fault root tracking on the CNC lathe were realized. The proposed method realizes the digitalization and intelligentization of fault diagnosis and has the advantages of timely and efficient diagnosis. Finally, the effectiveness of the proposed method is verified by a numerical control lathe tool processing experiment.

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19

Wang, Yiqiang, Yazhou Jia, Junyi Yu, and Shangfeng Yi. "Field failure database of CNC lathes." International Journal of Quality & Reliability Management 16, no. 4 (June 1999): 330–43. http://dx.doi.org/10.1108/02656719910266532.

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20

Wang, Yiqiang, Yazhou Jia, Junyi Yu, Yuhua Zheng, and Shangfeng Yi. "Failure probabilistic model of CNC lathes." Reliability Engineering & System Safety 65, no. 3 (September 1999): 307–14. http://dx.doi.org/10.1016/s0951-8320(98)00102-1.

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21

Maximov, J. T., T. V. Kuzmanov, G. V. Duncheva, and N. Ganev. "Spherical motion burnishing implemented on lathes." International Journal of Machine Tools and Manufacture 49, no. 11 (September 2009): 824–31. http://dx.doi.org/10.1016/j.ijmachtools.2009.05.011.

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22

Varonen, Unto. "Safeguarding of lathes and occupational accidents." Safety Science 21, no. 1 (November 1995): 15–22. http://dx.doi.org/10.1016/0925-7535(94)00059-x.

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23

Karpus, V. E., and A. V. Kotlyar. "Multicutter machining on numerically controlled lathes." Russian Engineering Research 27, no. 12 (December 2007): 884–87. http://dx.doi.org/10.3103/s1068798x07120118.

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24

Zhiganov, V. I., and Yu N. Sankin. "Improving precision lathes by dynamic balancing." Russian Engineering Research 31, no. 8 (August 2011): 785–87. http://dx.doi.org/10.3103/s1068798x11080260.

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25

Khusainov, R. M., A. N. Golovko, S. M. Petrov, S. Yu Yurasov, I. P. Balabanov, V. A. Grechishnikov, V. B. Romanov, and P. M. Pivkin. "Selecting optimal cutting tools for lathes." Russian Engineering Research 37, no. 4 (April 2017): 351–53. http://dx.doi.org/10.3103/s1068798x17040128.

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26

Dyakonov, A. A., A. Kh Nurkenov, I. V. Shmidt, A. S. Degtyareva, A. S. Ovsienko, and A. D. Kazanskii. "Static rigidity of numerically controlled lathes." Russian Engineering Research 37, no. 7 (July 2017): 622–25. http://dx.doi.org/10.3103/s1068798x17070103.

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27

Vinogradov, M. V., A. A. Ignat’ev, E. A. Sigitov, T. G. Nasad, E. M. Samoilova, A. A. Kazinskii, I. V. Klepova, M. Yu Zakharchenko, and A. I. Gavrilov. "Mechatronic Chip-Disintegration System for Lathes." Russian Engineering Research 38, no. 11 (November 2018): 882–85. http://dx.doi.org/10.3103/s1068798x18110205.

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28

Maslov, A. R., and E. M. Smolkin. "Tools for Swiss-Type CNC Lathes." Russian Engineering Research 43, no. 3 (March 2023): 383–85. http://dx.doi.org/10.3103/s1068798x23040202.

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29

Bodnarchuk, Andrey I., and Pavel V. Petrov. "THE VERTICAL ARRANGEMENT OF LATHE MACHINING CENTERS: THE TREND OF MACHINE TOOLS OR JUST A VARIETY OF MACHINES?" Interexpo GEO-Siberia 7, no. 1 (July 8, 2020): 10–13. http://dx.doi.org/10.33764/2618-981x-2020-7-1-10-13.

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The article analyzes vertical lathes from a retrospective point of view, defines the stages of formation and development of such machines. The advantages of vertical lathes are analyzed, and an attempt is made to find out the prospects for the development of such machines. The purpose of this work is to clarify the scope of rational use of vertical lathes. The results of calculations proving the advantages of such machines in terms of saving production space in comparison with the horizontal layout are presented.

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30

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 (November 5, 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 tools specifications should be designed to meet these requirements. To improve competitiveness and return investment over conventional NC lathes and machining centers, productivity required for a compound multiaxis machine tool is derived based on the machining time of typical parts on conventional machines. Here, we address systematic analysis and methodology to determine compound multiaxis machine tool specifications from the viewpoints of quality and cost.

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31

Adiyanto Pratama, Sandy, and Engkos Koswara. "PROSES PRODUKSI PART SHAFT MIXER VERTICAL MENGGUNAKAN MESIN BUBUT KONVENSIONAL DAN MESIN MILLING CNC." SEMINAR TEKNOLOGI MAJALENGKA (STIMA) 7 (November 8, 2023): 341–52. http://dx.doi.org/10.31949/stima.v7i0.912.

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PT. Amanah Jaya Persada is a company engaged in the manufacture of automotive parts, precision parts, jigs & fixtures, molds & dies, casting parts, fabrication and manufacture of tools for other industrial needs. PT. Amanah Jaya Persada manufactures Vertical Shaft Mixer Parts using conventional lathes and CNC Milling machines. In the process of making Part Shaft, the process of measuring the initial diameter of the material, making a sketch of the size of the workpiece, and the process of making the CNC Milling program code. The purpose of this research is to find out the production process time for Vertical Shaft Mixer Parts on Conventional Lathes and CNC Milling Machines, to understand the types of program codes on CNC milling machines. The research stages were carried out from the observation stage, problem formulation, literature study, field practice, data collection and data analysis, followed by material specifications, Conventional Lathes and CNC Milling Machines. The results showed that the production process for the Part Shaft Mixer Vertical using a conventional lathe required machining time of 33 minutes 6 seconds, while for a CNC milling machine it took 14 minutes 6 seconds. The CNC milling process uses a combination of G91 incremental and absolute G90 machining commands, G28 to return to the reference point for repeated feeding, as well as M code for rotating spindle commands, changing tools, turning on the coolant and stopping the machine / program is complete.

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32

Klymenko, Galyna, Yana Vasylchenko, and Vladislav Kvashnin. "MODELING OF CUTTING TOOLS WEAR FOR LATHES." Cutting & Tools in Technological System, no. 93 (December 31, 2020): 138–48. http://dx.doi.org/10.20998/2078-7405.2020.93.15.

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33

Goguadze, M. G. "Noise from Boring Machines and Shafting Lathes." Russian Engineering Research 40, no. 6 (June 2020): 495–96. http://dx.doi.org/10.3103/s1068798x20060118.

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34

Bukkapatnam, Satish T. S., Akhlesh Lakhtakia, and Soundar R. T. Kumara. "Nonstationary chaos in acoustic emission from lathes." Journal of the Acoustical Society of America 101, no. 5 (May 1997): 3045. http://dx.doi.org/10.1121/1.418679.

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35

Kwaczyński, Wojciech, and Krzysztof Filipowicz. "Innovations in the use of CNC lathes." Mechanik, no. 8-9 (September 2016): 1206–7. http://dx.doi.org/10.17814/mechanik.2016.8-9.320.

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36

Агеенко, Алексей, Aleksey Ageenko, Дмитрий Петрешин, Dmitriy Petreshin, Олег Федонин, Oleg Fedonin, Виктор Хандожко, and Viktor Khandozhko. "Features modernization feed drives of CNC lathes." Bulletin of Bryansk state technical university 2014, no. 4 (December 5, 2014): 86–91. http://dx.doi.org/10.12737/23105.

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This article proposes a method for modernizing feed drives of CNC lathes. The features of the application of the tracking actuator on the basis of DC brush motors for CNC lathes. The advantages of the electric servo valve to the dc drive. The features of the modernization drive supply turret CNC machine model 1B340F30 under the Department "Automated technological systems" Bryansk State Technical University. Proposed a functional block diagram of the control system drives innings this machine. Rational choice of scheme management system to avoid the effect of some factors on the accuracy of the actuator supply. The use of the electric servo valve possible to reduce the size of the drive and increase the ratio of power-to-weight.

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37

Chen, Ting-Yu, Wei-Jiunn Wei, and Jhy-Cherng Tsai. "Optimum design of headstocks of precision lathes." International Journal of Machine Tools and Manufacture 39, no. 12 (December 1999): 1961–77. http://dx.doi.org/10.1016/s0890-6955(99)00034-6.

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38

Fang, X. Daniel, and N. J. Lee. "A new tooling mechanism for CNC lathes." International Journal of Machine Tools and Manufacture 41, no. 1 (January 2001): 89–101. http://dx.doi.org/10.1016/s0890-6955(00)00059-6.

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39

Denisenko, A. F., V. I. Petrunin, and O. Yu Kazakova. "Positional errors of tools in multipurpose lathes." Russian Engineering Research 27, no. 10 (October 2007): 701–3. http://dx.doi.org/10.3103/s1068798x07100115.

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40

Boldasov, D. D., K. G. Potapov, and A. B. Syritskii. "Phase–chronometric diagnostics of metal-cutting lathes." Russian Engineering Research 36, no. 8 (August 2016): 668–72. http://dx.doi.org/10.3103/s1068798x16080062.

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41

Martinov, G. M., R. A. Nezhmetdinov, and A. U. Kuliev. "Approach to implementing hardware-independent automatic control systems of lathes and lathe-milling CNC machines." Russian Aeronautics (Iz VUZ) 59, no. 2 (April 2016): 293–96. http://dx.doi.org/10.3103/s1068799816020239.

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42

Chen, Dian Sheng, and Tian Shan Lv. "Optimization of Distribution Model for CNC Lathes Early Failures." Key Engineering Materials 407-408 (February 2009): 107–11. http://dx.doi.org/10.4028/www.scientific.net/kem.407-408.107.

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To eliminate early failures of CNC lathes, it is necessary to study the early failure distribution to establish accurate early failure distribution model of CNC lathes. During the modeling process, the same group of failure data obeys Weibull distribution, exponential distribution, super-exponential distribution and gamma distribution at the same time. To optimize the failure distribution model, this paper used “relevant index” method by comparing the distribution function curve fitting and determined that this group of failure data fitted Weibull distribution using maximum likelihood estimation method with its shape parameter k 0.8706 and scale parameter b142.6991.

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Wang, Jun Feng, Xian Feng Du, Qing Ming Hu, and Shi Gang Wang. "System Design of Spindle on High-Precise CNC." Applied Mechanics and Materials 151 (January 2012): 463–68. http://dx.doi.org/10.4028/www.scientific.net/amm.151.463.

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With the rapid development of science and technology, Lathe will be sure to develop in the direction of high speed, high precision and high stability as the most basic and important production equipment in industry. The spindle is the one of important component in the lathe, of which static and dynamic characteristics is directly related to the machining precision and machining stability, and the performance of spindle system directly affects the overall machine specifications. Through the analysis of the characteristics of spindle, the ways and means of the spindle analysis are studied. For the requirements of static and dynamic characteristics analysis in the process of spindle design on high-precise CNC lathes hydrostatic, direct-drive spindle motor mode is used. Three-supporting structure is adapted in the layout of spindle bearing in order to improve the accuracy and stability of the spindle drive. The rolling bearing is used in auxiliary support, the front and rear radial bearing is used in master hydrostatic bearing. Thrust bearings are located on both sides of the former type of radial bearing to complete the selection of the spindle material and the design of the structural primary dimensions. It is meaningful to improve the specifications of CNC lathes, guide the design, generation and modification of the high precise CNC lathe and enhance static dynamic characteristics of the spindle and improve accuracy and stability of the machine tool processing.

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Wang, Yi Qiang, Xiao Jun Wang, and Shun Ming Hua. "Reliability Analysis and Improvement of ATCs of CNC Lathes." Applied Mechanics and Materials 37-38 (November 2010): 939–43. http://dx.doi.org/10.4028/www.scientific.net/amm.37-38.939.

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An automatic tool changer (ATC) is one of the most important subsystems of a computerized numerical control (CNC) lathe. The field failure analysis is very important to improve the reliability of the ATC. The structure and mechanism of an ATC is briefly introduced. Its brief reliability block diagram is set up. With this understanding, through the collection of the field failure data, a coding system to code failure data is devised and a failure analysis database of CNC lathes is accrued. The failure mode and cause are analyzed to indicate the weak subsystem of the ATC. Some suggestions on improving the reliability have been proposed.

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Петрешин, Дмитрий, Dmitriy Petreshin, Олег Федонин, Oleg Fedonin, Алексей Агеенко, and Aleksey Ageenko. "Algorithm for diagnosis the state of CNC lathes." Bulletin of Bryansk state technical university 2014, no. 2 (June 30, 2014): 75–79. http://dx.doi.org/10.12737/23319.

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An algorithm of diagnosing the state of CNC lathes that enables the diagnosis of the system to detect and compensate for static and dynamic components of the contour error path of the executive bodies.

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Xu, Zhi Wei, and Yong Xian Liu. "Study on Modular Design Method for CNC Lathe." Applied Mechanics and Materials 80-81 (July 2011): 1198–202. http://dx.doi.org/10.4028/www.scientific.net/amm.80-81.1198.

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A multi-dimensional module partition methodology is put forward for CNC lathe, in which not only the functional module partition and the physical structure module partition of CNC machine tools are taken into account, but the characteristics of different stages of in the whole life-cycle of machine tools is considered as well. On the basis of this the principle of module partition for CNC machine tools are presented. The mechanical structure system of CNC lathe is elaborated on the functional module and structural module. A CNC machine tool company’s HTC Series CNC lathes modular design is illustrated as an example.

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Muzykant, I. A., Y. V. Maksimov, A. S. Litvinov, E. V. Mironenko, V. S. Gusenko, and S. L. Mirantsov. "Improvement of prefabricated cutting tools for heavy lathes." Izvestiya MGTU MAMI 7, no. 1-2 (March 10, 2013): 68–73. http://dx.doi.org/10.17816/2074-0530-68024.

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This article considers the issues of improvement of prefabricated constructions for the cutters of heavy machine tools with the purpose of increase the durability of the cutting unit and increase the rigidity of the mounting of cutting elements. There are presented the results of analytical studies of the strength and dynamic characteristics of cutting tools for heavy machine tools.

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Kaldashev, Tsvetan. "DEVELOPING LATHES POSTPROCESSOR GENERATING CYCLES OF PROCESSING GROOVES." ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June 20, 2019): 74. http://dx.doi.org/10.17770/etr2019vol3.4186.

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This article explores the possibility of developing a post-processor generating circles for radial and facsimile grooves in PTC Creo environments using a generalized postprocessor G-POST and a specialized language FIL (Factory Interface Language). The proposed development approach can also be applied to post-processor generating cycles for rough and fine turning (G71, G72 and G70).

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Araújo, R. P., and T. L. Rolim. "Systematics for checking geometric errors in CNC lathes." Journal of Physics: Conference Series 648 (October 15, 2015): 012024. http://dx.doi.org/10.1088/1742-6596/648/1/012024.

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Szecsi, Tamas. "Automatic cutting-tool condition monitoring on CNC lathes." Journal of Materials Processing Technology 77, no. 1-3 (May 1998): 64–69. http://dx.doi.org/10.1016/s0924-0136(97)00395-6.

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