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Journal articles on the topic 'Machining methods'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 May 2022

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1

Putyra, Piotr, Marcin Podsiadło, Jolanta Laszkiewicz-Łukasik, and Tadeusz Krzywda. "Ceramics machining methods." Mechanik, no. 2 (February 2015): 120–22. http://dx.doi.org/10.17814/mechanik.2015.2.17.

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2

Cheng, Chang. "Research on the Machining Methods in Machining Center." Advanced Materials Research 476-478 (February 2012): 681–85. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.681.

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The machining center of SINUMERIK-802D system offers a large variety of machining methods. This paper compares a simplified cutter presetting method and several instructions that are less frequently used including rounding instruction (G1/G2/G3, RND), feed rate override instruction (CFC/CFTCP), helical interpolation instruction (G2/G3, TURN) and automatic input of radius compensation instruction ($TC_DP6) with other common instructions and introduces the flexible and simple application of these unfamiliar methods, in an attempt to provide some reference and inspiration for operators.

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3

Chigirinskii, Yu L. "Distinguishing between machining methods." Russian Engineering Research 32, no. 3 (March 2012): 291–95. http://dx.doi.org/10.3103/s1068798x12030070.

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4

Петраков, Юрій Володимирович. "Methods of control the machining process." Journal of Zhytomyr State Technological University. Series: Engineering 2, no. 2(80) (December 20, 2017): 124–34. http://dx.doi.org/10.26642/tn-2017-2(80)-124-134.

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5

Shchedrin, A. V., V. V. Ul’yanov, V. M. Skoromnov, and A. A. Bekaev. "Bauschinger effect in complex machining methods." Russian Engineering Research 28, no. 8 (August 2008): 797–99. http://dx.doi.org/10.3103/s1068798x08080145.

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6

Смоленцев, Владислав, and Vladislav Smolentsev. "Innovation technologies of combined machining methods." Science intensive technologies in mechanical engineering 2, no. 7 (July 20, 2017): 15–19. http://dx.doi.org/10.12737/article_595256f198a9c5.31338189.

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The analysis of the state of scientific investigations and the results achieved in the matter of the application of product combined machining methods with the use of various kinds of physicochemical impacts in which at least one refers to electric methods of working is presented. The technological possibilities of well-known and new combined processes are shown, the forecasts on their efficient use in mechanical engineering are given.

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7

Scott, Simon, and Zulfiqur Ali. "Fabrication Methods for Microfluidic Devices: An Overview." Micromachines 12, no. 3 (March 18, 2021): 319. http://dx.doi.org/10.3390/mi12030319.

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Microfluidic devices offer the potential to automate a wide variety of chemical and biological operations that are applicable for diagnostic and therapeutic operations with higher efficiency as well as higher repeatability and reproducibility. Polymer based microfluidic devices offer particular advantages including those of cost and biocompatibility. Here, we describe direct and replication approaches for manufacturing of polymer microfluidic devices. Replications approaches require fabrication of mould or master and we describe different methods of mould manufacture, including mechanical (micro-cutting; ultrasonic machining), energy-assisted methods (electrodischarge machining, micro-electrochemical machining, laser ablation, electron beam machining, focused ion beam (FIB) machining), traditional micro-electromechanical systems (MEMS) processes, as well as mould fabrication approaches for curved surfaces. The approaches for microfluidic device fabrications are described in terms of low volume production (casting, lamination, laser ablation, 3D printing) and high-volume production (hot embossing, injection moulding, and film or sheet operations).

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8

Markopoulos, Angelos P., Nikolaos E. Karkalos, and Emmanouil-Lazaros Papazoglou. "Meshless Methods for the Simulation of Machining and Micro-machining: A Review." Archives of Computational Methods in Engineering 27, no. 3 (March 16, 2019): 831–53. http://dx.doi.org/10.1007/s11831-019-09333-z.

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9

Prakash, Marimuthu K., Kumar C. S. Chethan, and Prasada H. P. Thirtha. "Residual Stresses Modelling of End Milling Process Using Numerical and Experimental Methods." Materials Science Forum 978 (February 2020): 106–13. http://dx.doi.org/10.4028/www.scientific.net/msf.978.106.

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Machining has been one of the most sort of process for realizing different products. It has significant role in the value additions process. Machining is one of the production process where material is removed from the parent material to realize the final part or component. Among machining, the well known machining processes are turning, milling, shaping, grinding and non-conventional machining processes like electric discharge machining, ultrasonic machining, chemical machining etc. The fundamental of all these processes being material removal in the form of chips using a tool either in contact or not in contact. In the present work, milling is being taken for study Finite element analysis is being used as a tool to understand the different phenomenon that underlies the machining processes. Of late, the machining induced residual stresses is of great interest to the researchers since the residual stresses have an impact on the functional performances. The present work is to model the milling process to predict the forces and residual stresses using finite element method. Unlike many researchers, the authors have attempted to develop oblique cutting model rather than an orthogonal cutting model. The present work was carried out on AISI 1045 steel.

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10

Chen, Yue Ping, Jian Gao, and Li Feng Wu. "Review on Deflection Compensation Methods for Machining of Thin-Walled Components." Applied Mechanics and Materials 29-32 (August 2010): 1768–76. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.1768.

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The deflection of thin-walled components during machining will seriously affect their machining accuracy and surface quality. This paper presents a state of art review for the research in error prediction and error compensation during machining of these components. Some key techniques, such as the overall scheme, the cutting stability, the machining force modeling methodologies, the machining deformation analysis methodologies based on FEA and NC compensation methodologies, are discussed. The problems which have been highlighted in the research papers are pointed out and some problems which should be further investigated are given.

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11

Brown, C. A. "Strain analysis in machining using metallographic methods." Metallography 20, no. 4 (November 1987): 465–83. http://dx.doi.org/10.1016/0026-0800(87)90020-6.

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12

Kulikov, M. Yu, V. E. Inozemtsev, and A. A. Bocharov. "Complex Quality Assurance Methods for Surface Machining." Procedia Engineering 150 (2016): 953–58. http://dx.doi.org/10.1016/j.proeng.2016.07.069.

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13

Prilutskii, V. A., and V. A. Parfenov. "Machining the Spherical Ends of Solids of Revolution. 2. Search for Machining Methods." Russian Engineering Research 41, no. 4 (April 2021): 370–73. http://dx.doi.org/10.3103/s1068798x21040195.

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14

GRUSZKA, Józef, and Andrzej SUCHECKI. "New methods of internal combustion engine cylinder surface forming." Combustion Engines 130, no. 3 (July 1, 2007): 26–34. http://dx.doi.org/10.19206/ce-117322.

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This article comprises a description of methods of internal combustion engine cylinder machining including a description of traditional machining method and a description of some new machining methods – being in use in the motor industry. Special attention has been given to a laser beam treatment method. Results of cylinder surface structure examination after laser-beam treatment with an electron microscopy method and with the use of a scanning microscope have been always presented.

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15

Mehrvar, Ali, Ali Basti, and Ali Jamali. "Inverse modelling of electrochemical machining process using a novel combination of soft computing methods." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 234, no. 17 (April 2, 2020): 3436–46. http://dx.doi.org/10.1177/0954406220916495.

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Selection of optimal and suitable process parameters is a crucial issue in manufacturing processes especially in electrochemical machining (ECM). Since the utmost target is to find suitable machining parameters for gaining desired machining performances, a new hybrid approach has been applied for inverse modelling of ECM process. Four machining inputs, i.e. voltage, tool feed rate, electrolyte flowrate and concentration; and two machining responses, i.e. surface roughness (Ra) and material removal rate (MRR) are presented as input variables and responses, respectively. In the proposed approach, firstly, comprehensive mathematical equations have been established based on response surface methodology (RSM). The two machining performances are modeled in this step with machining parameters. Then, the differential evolution (DE) algorithm has been used for Pareto-based multi-objective optimization. Finally, group method of data handling (GMDH)-type neural networks is used through the Pareto table for inverse modelling. As a result, four models have been developed for each of the four machining parameters; therefore, each machining parameters is determined according to the machining performance as two new design variables. The results demonstrated that the suggested method is a helpful and promising tool for inverse modelling and determining such important relationships between optimized responses and input variables.

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16

Saushkin, S. B., and Y. A. Morgunov. "Structural modeling and classification of methods of electrochemical machining." Izvestiya MGTU MAMI 5, no. 1 (January 10, 2011): 188–93. http://dx.doi.org/10.17816/2074-0530-69957.

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The article considers the analysis of models used to describe the electrochemical machining. The authors present the structural formula describing numerous ways of electrochemical machining, which were a base for classification of methods and processing techniques.

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17

Hou, Jun Zhan, Wei Zhou, and Ning Zhao. "Methods for Prevention of Ignition during Machining of Magnesium Alloys." Key Engineering Materials 447-448 (September 2010): 150–54. http://dx.doi.org/10.4028/www.scientific.net/kem.447-448.150.

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Magnesium alloys have been increasingly used in automotive and aerospace components and in portable microelectronic devices due to their “ultralightness” and high specific strength. Machining is an important method used to process magnesium alloys. The advantages of machining over other processing methods such as die casting include reduction in power consumption and excellent surface finish. However, the ignition of chips presents a dangerous problem during machining. This problem has attracted considerable research interests. Though coolants can be used effectively to prevent ignition, the pollution of environment and reclamation of chips can not be resolved easily. Therefore, one better approach is to control the machining parameters for minimizing ignition hazard of magnesium alloy chips during dry machining. A systematic study was conducted for a few different magnesium alloys (including AM50A and AZ91D) to understand effect of cutting parameters (cutting speed, feedrate and depth of cut) on ignition of chips during face milling. It is interesting to find that for any fixed cut depth ignition in the forms of sparks, flares or ring of fire occurs only in the moderate cutting speeds and feedrates and can thus be easily prevented by adopting either higher or lower cutting speeds or feedrates. Chips produced in different machining conditions were collected and their morphology was analyzed to understand mechanisms of ignition.

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18

Grigoriev, Sergey N., Andrey A. Kutin, and Mikhail Turkin. "Advanced CNC Programming Methods for Multi-Axis Precision Machining." Key Engineering Materials 581 (October 2013): 478–84. http://dx.doi.org/10.4028/www.scientific.net/kem.581.478.

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This paper presents a method to simultaneously increase the accuracy and decrease the calculation time for complex tool path programming in multi-axis machining centers. Examples of complex parts requiring such complex tool paths include various kinds of turbine blades, pump-forcing augers, teeth surfaces, etc. It explains the creation of topological structures on the basis of analytical spline curves with floating range definitions. The method for tool path calculation accommodates the specific requirements for multi-axis milling. The algorithms developed are the foundation for the CAD/CAM software that allows for NC programming and machining on 5-axis centers employing any design model. Industrial tests reveal a 70-80% reduction of NC programming time of parts with complex surfaces, reduced machining time of approximately 40-50% using basic high-speed cutting methods and custom-made tools. The advanced methods of NC programming result in substantially increasing machining accuracy.

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19

Zhu, Li Feng, Kai Wang, Huan Wu, Dong Xiu, and Li Zhong Sun. "Research on the Methods for Common-Rail Pipe Holes Abrasive Flow Machining." Applied Mechanics and Materials 721 (December 2014): 122–26. http://dx.doi.org/10.4028/www.scientific.net/amm.721.122.

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Abrasive Flow Machining method is an effective means for the common rail inside the tiny hole and cross-hole debarring polishing and machining. In this article, using FLUENT software analysis Abrasive Flow Machining common rail runner and three-dimensional numerical aperture structure, in the inlet velocity for the next 60m / s condition, contrast single, bilateral Abrasive Flow Machining method, derived both steady-state pressure, image analysis and comparison of the results of the dynamic pressure, velocity and turbulence kinetic energy, properly using numerical calculation to guide production process procedures, provide a reference for the optimization of the abrasive flow processing..

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20

Saravanan, S., V. Vijayan, S. T. Jaya Suthahar, A. V. Balan, S. Sankar, and M. Ravichandran. "A review on recent progresses in machining methods based on abrasive water jet machining." Materials Today: Proceedings 21 (2020): 116–22. http://dx.doi.org/10.1016/j.matpr.2019.05.373.

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21

Gorin, Alexander, and M. Mohan Reddy. "Advanced Ceramics: Some Challenges and Solutions in Machining by Conventional Methods." Applied Mechanics and Materials 624 (August 2014): 42–47. http://dx.doi.org/10.4028/www.scientific.net/amm.624.42.

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The lecture discusses various machining methods of advanced ceramics, their performances and limitations. These methods include both conventional turning, grinding and milling operations and some selected from the category of non-traditional machining processes like electrical discharge machining, laser assisted milling, abrasive water jet and other are presented as well. Special consideration is given to machinable glass ceramic and aluminum nitride ceramic representing structural ceramics due to their wide range of applications and attractive properties

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22

Lukovics, Imrich, and Jiří Čop. "Finishing Methods of Tools Functional Surfaces." Key Engineering Materials 581 (October 2013): 18–21. http://dx.doi.org/10.4028/www.scientific.net/kem.581.18.

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Article shows the calculation of the stress in a rotating disc and the possibility of using proprietary forms of instruments for speed grinding. It presents the results of speed and efficient cutting tools in machining these materials alloyed with chromium. In addition, it notes the results of the influence of technological conditions on the quality of surfaces, the residual stress in the workpiece, resulting from the machining speed and the influence of technological conditions on the wear of grinding wheels. Finally, some options for the use of finishing techniques in practice are mentioned.

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23

Huang, Juan, Yun Ming Zhu, Qin Feng Li, and Gui Cheng Wang. "Active Control Methods of Cutting Burr in Precision and Ultra-Precision Machining." Applied Mechanics and Materials 494-495 (February 2014): 620–23. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.620.

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The burr formation and control is one key technology of achieving precision and ultra-precision machining and automatic machining. Based on the theory of system engineering, the metal cutting burr formation, control and removal technology system are constructed in the paper. Then, the basic principles of burr control are presented. Combined with precision and ultra-precision machining and automatic machining, the active control methods and technologies of burr are presented. They are the modified design of parts structure, the option of tool geometry parameters, the adjustment of cutting data and processing technologies optimization etc. So, these methods lay a solid foundation on achieving minimum burrs.

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24

Qian, Ying Ping, Yin He, Ju Hua Huang, and Xi Zhi Zhou. "An Outline of Methods in Machining Curved Hole." Advanced Materials Research 328-330 (September 2011): 181–85. http://dx.doi.org/10.4028/www.scientific.net/amr.328-330.181.

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Cooling stage is a key stage of injection molding. It affects both the quality and efficiency of injection molding of products. Conformal cooling channel, due to its advantages in uniform cooling and rapid cooling, could improve the cooling effect obviously. Therefore, study on methods of machining curved hole are proposed to be used for practice. In this thesis, some methods of machining curved hole and their features in general were introduced.

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25

Brewer, L. N., M. A. Othon, Y. Gao, B. T. Hazel, W. H. Buttrill, and Zhong Zhong. "Comparison of diffraction methods for measurement of surface damage in superalloys." Journal of Materials Research 21, no. 7 (July 1, 2006): 1775–81. http://dx.doi.org/10.1557/jmr.2006.0199.

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Surface damage from machining operations is a potential source of failure in metallic components. The ability to quantitatively characterize the depth and extent of the damage layer is critical to controlling the machining process. Electron back scattered diffraction and synchrotron high energy x-ray diffraction were applied to the measurement of machining surface damage in a Ni-based super alloy. Both techniques clearly showed a plastic deformation profile below the surface as a function of the machining conditions used. Using the average intragrain misorientation parameter, the electron back scattered diffraction was able to quantify the amount of surface damage from one surface treatment to another. In addition, the x-ray diffraction measurements were able to simultaneously measure the elastic strain as a function of depth from the surface.

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26

Wakabayashi, Toshiaki, Keisuke Yamada, Shota Koike, and Toshifumi Atsuta. "Turning of Titanium Alloy Using Near-Dry Methods with MQL, Coolant Mist and Hybrid Mist Supplies." Key Engineering Materials 749 (August 2017): 101–6. http://dx.doi.org/10.4028/www.scientific.net/kem.749.101.

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Because of effective machining operations with a very small amount of cutting fluids, near-dry machining attracts increasing attentions for environmental and economical benefits. MQL machining has so far been recognized as the most representative near-dry method and it is highly successful in machining of most ordinary steels. Recent concern for environmentally friendly manufacturing further encourages the attempts at applying near-dry operations to machining of difficult-to-cut materials. Since titanium alloys are typical difficult-to-cut materials, this paper investigates the cutting performance of various near-dry methods in turning of a titanium alloy from the view point of elongating the tool life. Those near-dry operations include supply methods of regular MQL mist, coolant mist and hybrid mists, where the coolant mist is atomized water-soluble cutting fluid and hybrid mists are the mixture of MQL and coolant mists. The regular MQL operation provided longer tool life than that of dry machining. In addition, compared with MQL machining, the hybrid mist operations could further extend tool life and, in particular, the single coolant mist operations demonstrated the possibility of making the tool life longer than that of ordinary wet machining with flood cutting fluid supply.

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27

Zhang, Xiang Po, Nai Hui Yu, Jian Zhong Shang, and Zhuo Wang. "Study on Reliability Test Methods of Machining Center." Applied Mechanics and Materials 44-47 (December 2010): 829–33. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.829.

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As the main subject of the reliability research, the reliability test is an important technological way to improve the reliability of the machining center (MC). Based on the failure characteristics and reliability research status of machining center, some related issues to the MC’s reliability test were studied in this paper. Three reliability test methods of MC, field test, laboratory test and virtual test were introduced, and the advantages and disadvantages were analyzed. It has some engineering significance as it provided a guideline to select a correct and effective method to the reliability test of MC.

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28

Duffuaa, S. O., A. N. Shuaib, and M. Alam. "Evaluation of optimization methods for machining economics models." Computers & Operations Research 20, no. 2 (February 1993): 227–37. http://dx.doi.org/10.1016/0305-0548(93)90077-v.

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29

Tay, A. A. O. "A review of methods of calculating machining temperature." Journal of Materials Processing Technology 36, no. 3 (March 1993): 225–57. http://dx.doi.org/10.1016/0924-0136(93)90033-3.

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30

Tuersley, I. P., A. Jawaid, and I. R. Pashby. "Review: Various methods of machining advanced ceramic materials." Journal of Materials Processing Technology 42, no. 4 (May 1994): 377–90. http://dx.doi.org/10.1016/0924-0136(94)90144-9.

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31

Kochan, Detlef, and Anette Reichelt. "Process planning for complex machining with AI methods." Computers in Industry 18, no. 2 (1992): 231–34. http://dx.doi.org/10.1016/0166-3615(92)90120-c.

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32

Abrate, S., and D. A. Walton. "Machining of composite materials. Part I: Traditional methods." Composites Manufacturing 3, no. 2 (January 1992): 75–83. http://dx.doi.org/10.1016/0956-7143(92)90119-f.

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33

Saptaji, K., S. N. Afiqah, and R. D. Ramdan. "A Review on Measurement Methods for Machining Induced Residual Stress." Indonesian Journal of Computing, Engineering and Design (IJoCED) 1, no. 2 (September 30, 2019): 106. http://dx.doi.org/10.35806/ijoced.v1i2.64.

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The chip formation in mechanical machining / cutting process involves thermal loading and mechanical loading in the form of large plastic deformations, high strain, strain rates and high temperatures in the cutting zone. These loadings usually induce plastic deformation in the form of residual stresses in the surface and sub-surface of the machined workpiece. Residual stress issue is essential to be studied in order to control the quality and fatigue life of a component or part produced by machining process. Therefore, the magnitude and depth of the residual stresses into the workpiece sub-surface is important and necessary to be measured. The objective of this paper is to discuss various study on the effects of machining parameters on residual stress and residual stress measurement methods for machined workpiece namely non-destructive, semi-destructive and destructive methods. In addition, the effect of machining process into the metallurgical conditions of the workpiece in the form of microstructural changes is also discussed.

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34

Chan, Yuk Lun, and Xun Xu. "Evaluation and comparison of lubrication methods in finish machining of hardened steel mould inserts." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 231, no. 14 (November 23, 2015): 2458–67. http://dx.doi.org/10.1177/0954405415600683.

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Traditionally, metal cutting fluid or lubricant is used in finishing operations of high-speed machining process to reduce the rate of tool wear, which in turn will improve surface quality. In automobile and aerospace industries, minimum quantity lubrication technique is considered to provide the same level of performance as the flood coolant method and offers financial benefits by saving coolant direct and associated costs. However, scant research work has been done on minimum quantity lubrication applications in the die and mould manufacturing industry. In this study, the effects of dry, flood and minimum quantity lubrication machining on surface roughness, tool wear, dimensional accuracy and machining time of hardened steel mould inserts were compared. The results revealed that there were no significant differences between these three lubrication methods. More in-depth experimental study of dry and minimum quantity lubrication machining was then carried out using the design of experiments technique. In terms of surface roughness and tool wear, there were again no significant differences. Nevertheless, minimum quantity lubrication machining produced more accurate results than dry machining in dimensional deviation. The regression models show that feed-rate ( fz) has a larger effect on surface roughness and machining time than step-over ( ae), while depth of cut ( ap) has no significant effect on surface roughness. Based on the test piece shape, a shortest possible machining time of 3.55 h and a good surface finish of 0.28 µm can be achieved using a small feed-rate (0.03 mm/tooth), a large step-over (0.1 mm) and a large depth of cut (0.2 mm). This work shows that when combining the minimum quantity lubrication technique with the right cutting conditions in modern die and mould manufacturing, machining time and polishing time can be saved, which leads to an overall saving in production cost. Using the dry and minimum quantity lubrication techniques for different finish machining situations can therefore be a good economical solution.

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35

Dai, Wei, Jiahuan Sun, Yongjiao Chi, Zhiyuan Lu, Dong Xu, and Nan Jiang. "Review of Machining Equipment Reliability Analysis Methods based on Condition Monitoring Technology." Applied Sciences 9, no. 14 (July 11, 2019): 2786. http://dx.doi.org/10.3390/app9142786.

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The condition of mechanical equipment during machining is closely related to the accuracy and roughness of the workpiece. In an intelligent sensing environment, a large amount of multi-source data reflecting status information are generated during processing, and a number of studies have been conducted for machining equipment reliability analysis. In this paper, the reliability analysis method of machining equipment based on condition monitoring technology is taken as the main line. And an up-to-date comprehensive survey of multi-source information during the cutting process, failure physical analysis for signal selection and reliability assessment based on condition information will be provided. Finally, the future challenges and trends will also be presented. It is a feasible and valuable research direction to evaluate the reliability of machining equipment for product quality characteristics.

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36

Li, Yuanchen, Chengzu Ren, Hui Wang, Yingbin Hu, Fuda Ning, Xinlin Wang, and Weilong Cong. "Edge surface grinding of CFRP composites using rotary ultrasonic machining: comparison of two machining methods." International Journal of Advanced Manufacturing Technology 100, no. 9-12 (October 29, 2018): 3237–48. http://dx.doi.org/10.1007/s00170-018-2901-1.

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37

Wang, Hong Yan, Xue Feng Yang, and Pei Quan Guo. "Research on Machining Methods for Non-Circular Isometric Profile." Key Engineering Materials 407-408 (February 2009): 68–72. http://dx.doi.org/10.4028/www.scientific.net/kem.407-408.68.

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Two machining methods for non-circular isometric profile are introduced. The profile modeling technology and the numerical control technology are analyzed. The dynamic property of in a series profile modeling technology system is revealed, and the design principle for in a series profile modeling technology system is put forward, the value range of damping ratio is instanced at near 0.7. The turning machining system adopting linear servo motor as drive element is brought forward.

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38

Slătineanu, Laurenţiu, Margareta Coteaţă, Irina Beşliu, Geo Caracaş, Gheorghe Bosoancă, and Ciprian Mircescu. "Nonconventional Machining Based on Electrical Charged Particles Motion in Liquid." Applied Mechanics and Materials 657 (October 2014): 316–20. http://dx.doi.org/10.4028/www.scientific.net/amm.657.316.

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<p class="TTPAbstract">Nonconventional machining methods are based on the transfer of the energy to the work zone in ways distinct from those applied in the case of the so-called classical machining methods. A group of nonconventional machining methods achieve material removal from workpiece by using the motion of the electrical charged particles in a liquid. Practically, some machining techniques included in the larger groups of electrical discharge machining and in electrochemical machining are based on the motion of electrical charged particles in fluid. The problem addressed in this paper is to identify the zones where differences between the two groups of machining methods appear. A theoretical analysis was developed in order to identify the common aspects and respectively the differences between the electrical discharge machining and electrochemical machining, if the machining liquid is considered. Some experimental tests were developed to highlight aspects specific to the above mentioned machining techniques. The research facilitated obtaining a more complete image of some common and distinct characteristics of electrical discharge machining and electrochemical machining. The significance of the electroconductive or insulating properties of the work liquid was highlighted.<o:p></o:p></p>

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39

Prihandana, Gunawan S., Muslim Mahardika, Mohammad Hamdi, and Kimiyuki Mitsui. "The Current Methods for Improving Electrical Discharge Machining Processes." Recent Patents on Mechanical Engineering 2, no. 1 (January 9, 2010): 61–68. http://dx.doi.org/10.2174/1874477x10902010061.

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40

Prihandana, Gunawan, Muslim Mahardika, Mohammad Hamdi, and Kimiyuki Mitsui. "The Current Methods for Improving Electrical Discharge Machining Processes." Recent Patents on Mechanical Engineeringe 2, no. 1 (January 1, 2009): 61–68. http://dx.doi.org/10.2174/2212797610902010061.

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41

Yang, Zhi, Richard A. Wysk, Sanjay Joshi, Matthew C. Frank, and Joseph E. Petrzelka. "Conventional machining methods for rapid prototyping and direct manufacturing." International Journal of Rapid Manufacturing 1, no. 1 (2009): 41. http://dx.doi.org/10.1504/ijrapidm.2009.028931.

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Han, Hong Biao, Z. D. Shang, and Ji Shun Li. "CNC Machining Methods of Drum with Fold Line Grooves." Key Engineering Materials 455 (December 2010): 383–87. http://dx.doi.org/10.4028/www.scientific.net/kem.455.383.

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In this paper, processing characteristics and difficulties of drum with fold line grooves are analyzed. Three kinds of CNC machining methods, namely three-axis linkage, single-axis servo and two-axis servo, are introduced. With CNC machining methods of single-axis servo and two-axis servo, the spindle motor of machine tool needs not to transform. A CNC system is developed which acquires the absolute position on the circle of drum through the spindle encoder and spindle zero position switch. It allows simultaneous servo position and velocity control of Z-axis AC servo motor or both Z-axis and X-axis AC servo motors. With the changes of angular displacement of spindle, the system manages the interpolation motion of X-axis and Z axis, so drums with fold line grooves can be achieved by this way. Both of these methods have been applied to transformation of machine tool with simple, economical and reliable operation. This paper also proposes three methods to improve the processing efficiency of the drum: increasing a function of return to zero rapidly, processing with more tools at the same time, processing external steel sleeve with fold line grooves and then installing it on a smooth drum.

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Liang, Jui-Fang, and Y. S. Liao. "Methods to Measure Wire Deflection in Wire EDM Machining." International Journal of Automation Technology 8, no. 3 (May 5, 2014): 461–67. http://dx.doi.org/10.20965/ijat.2014.p0461.

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It is well kown that the wire electrode is flexible and will lead to a big lag in wire EDM machining, especially in the middle area of the work-piece. Methods to measure the wire deflection when it passes through the work-piece are studied in this paper. It is found that there is discharge spark first at the upper and lower parts of the wire when it cuts to the edge of the work-piece. The discharge spark appears at the middle of the work-piece a few seconds later. Based on this result, a method coined Camera Picture Analysis (CPA) is proposed to estimate the wire deflection. Another method of cross section measurement by the CCD is proposed to make a cross reference with the CPA method. By applying these two methods, the wire deflection models can be established, and used for the corner cut control of wire-cut EDM to improve accuracy of the machined parts.

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van Luttervelt, C. A. "TYPOLOGY OF MODELS AND SIMULATION METHODS FOR MACHINING OPERATIONS." Machining Science and Technology 5, no. 3 (November 30, 2001): 415–28. http://dx.doi.org/10.1081/mst-100108623.

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Nayfeh, Ali H., Char-Ming Chin, and Jon Pratt. "Perturbation Methods in Nonlinear Dynamics—Applications to Machining Dynamics." Journal of Manufacturing Science and Engineering 119, no. 4A (November 1, 1997): 485–93. http://dx.doi.org/10.1115/1.2831178.

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The role of perturbation methods and bifurcation theory in predicting the stability and complicated dynamics of machining is discussed using a nonlinear single-degree-of-freedom model that accounts for the regenerative effect, linear structural damping, quadratic and cubic nonlinear stiffness of the machine tool, and linear, quadratic, and cubic regenerative terms. Using the width of cut w as a bifurcation parameter, we find, using linear theory, that disturbances decay with time and hence chatter does not occur if w < wc and disturbances grow exponentially with time and hence chatter occurs if w > wc. In other words, as w increases past wc, a Hopf bifurcation occurs leading to the birth of a limit cycle. Using the method of multiple scales, we obtained the normal form of the Hopf bifurcation by including the effects of the quadratic and cubic nonlinearities. This normal form indicates that the bifurcation is supercritical; that is, local disturbances decay for w < wc and result in small limit cycles (periodic motions) for w > wc. Using a six-term harmonic-balance solution, we generated a bifurcation diagram describing the variation of the amplitude of the fundamental harmonic with the width of cut. Using a combination of Floquet theory and Hill’s determinant, we ascertained the stability of the periodic solutions. There are two cyclic-fold bifurcations, resulting in large-amplitude periodic solutions, hysteresis, jumps, and subcritical instability. As the width of cut w increases, the periodic solutions undergo a secondary Hopf bifurcation, leading to a two-period quasiperiodic motion (a two-torus). The periodic and quasiperiodic solutions are verified using numerical simulation. As w increases further, the torus doubles. Then, the doubled torus breaks down, resulting in a chaotic motion. The different attractors are identified by using phase portraits, Poincare´ sections, and power spectra. The results indicate the importance of including the nonlinear stiffness terms.

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Abrate, S., and D. Walton. "Machining of composite materials. Part II: Non-traditional methods." Composites Manufacturing 3, no. 2 (January 1992): 85–94. http://dx.doi.org/10.1016/0956-7143(92)90120-j.

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Wang, Wei-Kang, Min Wan, Wei-Hong Zhang, and Yun Yang. "Chatter detection methods in the machining processes: A review." Journal of Manufacturing Processes 77 (May 2022): 240–59. http://dx.doi.org/10.1016/j.jmapro.2022.03.018.

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Kuruc, Marcel, Martin Kusý, Vladimír Šimna, and Jozef Peterka. "Influence of Machining Parameters on Surface Topography of Cubic Boron Nitride at Rotary Ultrasonic Machining." Key Engineering Materials 686 (February 2016): 180–85. http://dx.doi.org/10.4028/www.scientific.net/kem.686.180.

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Poly-crystalline cubic boron nitride (PCBN) is one of the hardest known material. Therefore only advanced methods are able to treat such material. Advanced machining methods, proper for machining of hard and brittle materials (such as glass and ceramics) include rotary ultrasonic machining (RUM). This method should achieve high precision and low surface roughness (at least during machining of materials such as ceramics). Achievable roughness is affected by machined material and machining parameters. This contribution investigates influence of machining parameters, such as cutting speed and feed rate, on resultant surface roughness during machining of PCBN by rotary ultrasonic machining.

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Deaconescu, Andrea, and Tudor Deaconescu. "Response Surface Methods Used for Optimization of Abrasive Waterjet Machining of the Stainless Steel X2 CrNiMo 17-12-2." Materials 14, no. 10 (May 11, 2021): 2475. http://dx.doi.org/10.3390/ma14102475.

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Abrasive waterjet machining (AWJM) has a particularly high potential for the machining of stainless steels. One of the main optimization objectives of the machining of X2 CrNiMo 17-12-2 stainless steel is obtaining a minimal surface roughness. This entails selecting an optimum configuration of the main influencing factors of the machining process. Optimization of the machining system was achieved by intervening on four selected input quantities (traverse speed, waterjet pressure, stand-off distance, and grit size), with three set points considered for each. The effects of modifying the set-points of each input parameter on the surface roughness were studied. By means of response surface methodology (RSM) the combination of factor set points was determined that ensures a minimum roughness of the machined surface. The main benefit of RSM is the reduced time needed for experimenting.

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GOK, KADIR. "INVESTIGATION USING FINITE ELEMENT ANALYSIS OF EFFECT ON CRATER GEOMETRY OF DIFFERENT ABRASIVE TYPES IN ABRASIVE WATER JET MACHINING." Surface Review and Letters 28, no. 07 (April 28, 2021): 2150060. http://dx.doi.org/10.1142/s0218625x21500608.

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Today, manufacturing methods are classified into two groups as conventional and non- conventional manufacturing methods. While turning, milling, and drilling are among the conventional manufacturing methods, processes such as laser, plasma, electro erosion, ultrasonic machining and water jet machining are among non-conventional, namely modern manufacturing methods. The cutting tool does not used in modern manufacturing methods. This situation is an advantage. There are some uncertainties on the machining performance of abrasive types, apart from the superior properties of the method. In this study, the effect of different abrasive types on machining performance in abrasive water jet machining (AWJM) was investigated by using computer aided finite element analysis.

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