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Journal articles on the topic 'CNC machining'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 March 2023

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1

Yan, Xiangsong. "Research and Application of CNC Machining Method Based on CAD/CAM/Robot Integration." Advances in Multimedia 2022 (July 9, 2022): 1–11. http://dx.doi.org/10.1155/2022/5397369.

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In order to improve the effect of intelligent CNC machining, this paper combines the CAD/CAM/Robot integration method to improve the CNC machining method and analyzes the tool path planning method and the path generation algorithm of the five-axis CNC machining machine. Through the tool processing calculation of the representative curved surface, this paper studies the basic theory, process planning, and tool parameter selection of the blade of the representative curved surface in the five-axis CNC machining and generates the blade CNC machining tool path through the simulation software. In addition, this paper analyzes the trajectory of the workpiece through the intelligent processing process and builds an intelligent processing system. Through the statistics of simulation test data, it can be seen that the CNC machining method based on CAD/CAM/Robot integration can effectively improve the intelligence of modern CNC machining and improve the effect of intelligent machining.

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2

Liu, Pei Ling. "Towards Smart and Competitive Sustainable Machining." Key Engineering Materials 447-448 (September 2010): 301–5. http://dx.doi.org/10.4028/www.scientific.net/kem.447-448.301.

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Computer Numeric Control (CNC) revolutionized the machining technology and has been the cutting edge of digital manufacturing since 1950s. CNC machining model, simulation, verification, and optimization have been a vivid research topic of Smart Machining that automated the CNC programming (CAM) and cutting process, hence greatly increased machining productivity since 1990s. This paper traces back the history of CNC simulation, analysis the different CNC machining models, tested with application examples, and listed different CNC verification industry applications for the last 20 years. The new challenge comes from sustainable manufacturing. Towards smart and competitive sustainable machining, CNC model and simulation will be used to optimize the machining process, where the raw material could be saved through First Part Correct technology, the energy could be saved through cutting speed optimization, and used parts could be saved by remanufacturing.

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3

Kuczmaszewski, Józef, Paweł Pieśko, and Magdalena Zawada-Michałowska. "A Comparative Analysis of the Impact of CNC Miller Programming on Machining Effects." Multidisciplinary Aspects of Production Engineering 1, no. 1 (September 1, 2018): 161–67. http://dx.doi.org/10.2478/mape-2018-0021.

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Abstract This paper presents a comparison of the impact of the programming methods of a CNC miller on the machining effects. As a part of the study, the test samples were made of the EN AW-2024 aluminium alloy. The CNC machining programs compared were developed with two programming methods: by inputting the CNC machining program directly from the CNC miller's control panel (machine level programming) and in a CAM software environment (CAM programming). The machining effect indicators adopted included: machining time, surface quality, and dimensional deviation of specific geometrical features. A measurement of the machining times revealed than the CAM programming reduced the machining time up to 20% from the machining time of the machine level programming. A conclusion stands valid that CNC machining programs developed in the CAM software environment are more efficient than CNC programming directly with the CNC miller control panel, most likely due to the machining path optimisation in CAM. In addition, given the experimental test results, it was found that smaller machined errors were also obtained for CAM programming. To conclude, the comparative analysis revealed that CAM programming provided better machining results than the machine level programming.

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4

Yinsheng, Wan. "Influence of CNC Tools on CNC Machining Technology." IOP Conference Series: Materials Science and Engineering 569 (August 9, 2019): 032043. http://dx.doi.org/10.1088/1757-899x/569/3/032043.

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5

Ruan, Xiao Guang, Yin Chen Wang, Dang Fei Zhang, Han Xin Cao, Min Sun, and Fu Yang Li. "Introduction of Characteristics and Choice of CNC Machining Cutter." Advanced Materials Research 421 (December 2011): 329–33. http://dx.doi.org/10.4028/www.scientific.net/amr.421.329.

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The article introduces the unique characteristics of CNC machining center cutter compared to traditional cutters, analyzes the choice of CNC machining cutter and factors of choice. Meanwhile, proved by the examples with manufacture software CAXA2004, the correct choice of CNC machining center cutter can give full play to the advantages of CNC machining and improve the economic efficiency and production levels of enterprises.

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6

Zhang, Er Hong, and Hua Long Zhang. "Control System for Automatic Surface CNC Machining." Applied Mechanics and Materials 741 (March 2015): 768–71. http://dx.doi.org/10.4028/www.scientific.net/amm.741.768.

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CNC technology is mechanical movement with digital information and work process control technology, data processing is the reverse engineering of important technical aspects, which determines whether the subsequent model reconstruction process easy and accurate manner. In this paper, CNC machining complex surfaces feature full potential of existing CNC equipment, automatic control system designed to make CNC machining equipment to achieve higher processing speed, high precision machining, and CNC equipment in order to achieve high efficiency machining.

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7

Bao, Mei Lian. "Automatic Programming Based on the Feature of the Parts." Applied Mechanics and Materials 401-403 (September 2013): 1586–89. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.1586.

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The structure of machining workpiece is more and more complex, from the perspective of CNC machining, contains a lot of processing features generally. Machining feature plays an important role for production process for CNC machining programming, CNC code, as well as the analysis of clamping. Feature programming is one of the development trend of automatic CNC programming. This improve the efficiency of programming greatly.

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8

Agrisa, Herick Henci. "An Overview of process CNC Machining." Journal of Mechanical Science and Engineering 6, no. 2 (July 8, 2020): 029–33. http://dx.doi.org/10.36706/jmse.v6i2.32.

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This paper discusses the pre and process of running a computer numerical control machine (CNC) using computer-aided design (CAD) software commonly used to design products to be produced and computer-aided manufacture (CAM) software used to control machines during the manufacturing process. Some types of CNC machines in general, namely CNC lathe machine and CNC milling machine. The history of the development of the CNC Machine was begun in 1952 by John Pearseon of the Massachusetts Institute of Technology on behalf of the United States Air Force, which aims to make complicated special workpieces. In addition, this paper also discusses the basic numerical code types used in CNC machines.

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9

Lin, Xin Gui, Kai Dou, and Gen Miao Yi. "The Application of Simulation Software in CNC Multi-Axis Machining Teaching." Advanced Materials Research 971-973 (June 2014): 2693–96. http://dx.doi.org/10.4028/www.scientific.net/amr.971-973.2693.

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Combined with the requirements for multi-axis CNC machining technicians in manufacturing industry, the current situation and problems existed in CNC multi-axis machining teaching are analyzed initially in this paper. Afterwards, in order to solve these problems and achieve theoretical teaching and skills training purposes, the advantages of CNC simulation software are applied in CNC multi-axis machining teaching. Finally, the deficiencies of the CNC simulation software are discussed so as to avoid in teaching.

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10

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 on-line monitoring technology based on neural network, can identify the changes of machining accuracy.

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11

Shin, Yung C., Henry Chin, and Michael J. Brink. "Characterization of CNC machining centers." Journal of Manufacturing Systems 10, no. 5 (January 1991): 407–21. http://dx.doi.org/10.1016/0278-6125(91)90058-a.

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12

Ma, Yan, Wei Li, and Dan Ping Li. "Reliability Study of CNC Machining Centers." Advanced Materials Research 418-420 (December 2011): 581–84. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.581.

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CNC machining centers were analyzed by the failure mode, effect and criticality analysis (FMECA) method for identifying the weakest links of a CNC machining center and obtaining that the spindle system is the primary factor that affects the reliability of CNC machining centers. The spindle system was analyzed at different feed speed by the finite element method. The results have important guiding significance for the reliability research of CNC machine tools.

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13

Luo, Hong Qi, Tian Yu Xia, and Yu Jie Zhang. "Research on the Mechanism and Developing Tendency of CNC Ultrasonic Machining." Applied Mechanics and Materials 159 (March 2012): 240–43. http://dx.doi.org/10.4028/www.scientific.net/amm.159.240.

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CNC ultrasonic machining is an effective method to machine hard and fragile materials. It can realize producing complicate-shaped parts with simple tools. Mechanism of CNC ultrasonic machining was presented. The main components of CNC ultrasonic machine tool were analyzed, including the principle of the ultrasonic generator, selecting suited transducer, designing appropriate horn and impedance matching of tools. Finally, developing tendency of the CNC ultrasonic machining was discussed.

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14

Wang, Haiyan, and Fanwei Meng. "Control Method of Nanomaterial Numerical Control Electronic Processing Based on RBF Neural Network." Advances in Materials Science and Engineering 2022 (August 17, 2022): 1–10. http://dx.doi.org/10.1155/2022/1904431.

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With the rapid development of social economy and modern industry, the performance requirements of some important nanomaterials in various fields are constantly improving. The processing of these nanomaterials will have a direct impact on the development level of some core industries, such as aerospace, medical devices, and automobile manufacturing. In the early stage of the machining process, the BP neural network is generally used to control the CNC machining. However, it also has some shortcomings, such as the inability to determine the initial parameter weights according to the errors in the processing process, which limits its application in processing control. Therefore, this paper used RBF neural network to solve the problems in the process of CNC machining of nanomaterials and, at the same time, integrated RBF neural network technology into CNC electronic machining control, so as to improve the precision of CNC electronic machining of nanomaterials and avoid the occurrence of errors to the greatest extent. The method proposed in this paper used the self-learning and self-adaptive ability of RBF neural network to adjust the parameters of CNC machining control and relied on its fast convergence speed and strong approximation ability to achieve better CNC machining control effect. The experimental results showed that, after integrating the control technology of RBFNN in the CNC machining process of nanomaterials, the roundness error and roughness error of the machined workpiece were reduced by 70% and 50%, respectively. The control method proposed in this paper has high precision and strong stability.

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15

Tian, Cun Xia. "Analysis of Key Technology of NC Turning Machining." Applied Mechanics and Materials 615 (August 2014): 3–6. http://dx.doi.org/10.4028/www.scientific.net/amm.615.3.

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Through the process of NC machining analysis, summed up the points of NC machining process analysis, through the process of a comprehensive and reasonable analysis procedure for CNC turning and CNC programming formulation provides an important basis and guarantee, so as to improve the machining quality and the machining accuracy requirements.

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16

James, Sagil, and George Eckert. "A Feasibility Study on Mixed Reality-Based Visualization and Interaction Tool for Performance Improvement of Metal Cutting Processes." Metals 13, no. 2 (January 31, 2023): 286. http://dx.doi.org/10.3390/met13020286.

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Modern CNC machining industries rely on the application of high-technology virtual simulations such as Finite Element Analysis (FEA) to become economically competitive, improve productivity, and ensure sustainability. However, the traditional way of using FEA in CNC machining industries is to perform the virtual studies at a completely offline location, that often leads to erroneous results, along with massive wastage of resources, time, and money. Real-time FEA is an emerging technique that generates real-time solutions in response to actual load variations. This research aims to integrate real-time FEA results with the corresponding real CNC machining process using Mixed Reality (MR) technologies to facilitate the machining operations to be economically competitive with higher efficiencies and improved sustainability. The proposed MR-based system enhances the real-time decision-making capability of the CNC machine operator. The preliminary results show that the use of real-time FEA could significantly improve the CNC machining results.

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17

Li, Yan, Jing Jia Qi, and Yang Nan. "Innovative Application Research on CNC Machining Technology in Mould." Applied Mechanics and Materials 288 (February 2013): 328–32. http://dx.doi.org/10.4028/www.scientific.net/amm.288.328.

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This paper mainly based on the analysis of current CNC machining technology in the application of mould, and combining modern development achievements of CNC processing technology and demand of mould industry, explanatorily puts forward the innovative application methods of CNC machining technology in the mold.

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18

Sakarinto, Wikan, Hiroshi Narazaki, and Keiichi Shirase. "A Knowledge-Based Model for Capturing and Managing the Knowledge of CNC Operators for Integrating CAM-CNC Operation." International Journal of Automation Technology 5, no. 4 (July 5, 2011): 575–86. http://dx.doi.org/10.20965/ijat.2011.p0575.

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This study is aimed at filling the gap between CAM and CNC operations. The problem is important in practice but has been rarely addressed in the resarch community. In practice, the machining parameters designed by a CAM operator are not always applicable to the machining process by a CNC operator due to several reasons such as tool wear, in-availability, inefficiency, etc. This is mainly due to the discrepancy of knowledge between CAM and CNC operators. To deal with this situation, this study proposes a knowledgebased model for capturing the know-how of CNC operators in the assessment of the product data (CAM files) produced by CAM operators. The assessment determines whether the designed machining parameters are appropriate or not before proceeding further to the machining process. This assessment is the main process where the know-how of a CNC operator is actualized. Based on the data extracted from CAM files, this study discusses a method that captures the knowledge of CNC operators in the process of an assessment. In this work, the discussion is focused on common CNC milling operations.

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19

Zeng, Fenfang, Hu Fan, Huanqing Li, and huachang Wang. "The Reuse method of the Part CNC process based on 3D feature matching." Journal of Physics: Conference Series 2396, no. 1 (December 1, 2022): 012020. http://dx.doi.org/10.1088/1742-6596/2396/1/012020.

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Abstract Aiming at the problem of efficient reuse of existing parts CNC process, this paper presents a reuse method of the part CNC process based on 3D feature matching. It’s assumed the part which is the most similar to the 3D features of the new part has been found in the CNC history library. To reuse the CNC process of the existing part, the CNC programs and machining parameters of the existing part are imported into the new part as the machining template firstly, then the improved 3D polar radius surface moments are used to extract the 3D shape and position vectors of the machining area of each CNC program of the existed part and each face of the new part, finally the weighted Euclidean distance is used as a metric to find the most similar matching of each machining area in the new part, and the matching result is optimized by the greedy algorithm based fragmented surface matching algorithm and the overall optimization algorithm. Hundreds of sets of 3D feature similar parts were verified in the prototype system based on this method. The results show that this method can effectively reuse the existing CNC parts, and significantly improve the efficiency of CNC programming.

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20

Zhang, Yan Rui, Hai Xia Bi, Tie Cheng Wang, and Shi Jie Li. "The Modeling and Simulation of Digital Lathe Based on OpenGL." Advanced Materials Research 988 (July 2014): 659–62. http://dx.doi.org/10.4028/www.scientific.net/amr.988.659.

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In the article, a digital machining environment of CNC lathe is established. On the basis of the idea of Constructive Solid Geometry method, the system consists of the blank display model, the tool and fixture model, CNC machining program editing model and machining simulation model. By making use of VC++ and OpenGL graphics technology the program is done for machine tool motion simulation and cutting simulation. It is an effective accessory tool in the application of CNC lathe to digital production.

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21

Loc, Nguyen Huu, and Nguyen Phuoc Hung. "UTILIZING RESPONSE SURFACE METHODS DESIGNS FOR OPTIMIZATION OF TECHNOLOGICAL PARAMETERS ON THE VIBRATION AMPLITUDE OF CNC ROUTER SPINDLE." ASEAN Engineering Journal 11, no. 1 (March 16, 2021): 34–44. http://dx.doi.org/10.11113/aej.v11.16665.

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For CNC machines, machining accuracy is of ultimate importance since it determines the quality of the products. Among many factors, vibration amplitude and stiffness are the key ones that influence the machining accuracy of a CNC machine. Remarkably, it is essential to conduct study into structural stiffness and the effect of technological parameters on the vibration amplitude of CNC router spindle with various second-order designs in order to improve machining accuracy. The research focuses on the application and comparison of the response-surface methods, the experimental research on the factors affecting the vibration amplitude, and the determination of the optimal working parameters for the CNC router.

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22

He, Wei, Min Ren, and Ying Qi Tan. "Realization of NURBS Surface CNC Machining Simulation in Matlab." Advanced Materials Research 461 (February 2012): 381–83. http://dx.doi.org/10.4028/www.scientific.net/amr.461.381.

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This paper presents a method of realization of NURBS surface CNC Machining simulation in matlab, including NURBS surface production, tool path generation, discrete surface and simulation model construction and CNC machining simulation realization.

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23

Fritz, Christian. "Automated Process Planning for CNC Machining." AI Magazine 37, no. 3 (October 7, 2016): 116–17. http://dx.doi.org/10.1609/aimag.v37i3.2665.

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This article describes our application of AI planning to the problem of automated process planning for machining parts, given raw stock and a CAD file describing the desired part geometry. We have found that existing planners from the AI community were falling short on several requirements, most importantly regarding the expressivity of state and action representations, and the ability to exploit domain-specific knowledge to prune the search space. In this article we describe the requirements we had in this application and what kind of results from the planning community helped us most. Overall, in this project as well as others, we found that even significant results from domain-independent planning may not be relevant in practice.

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24

Maksimov, Y. V., A. A. Bekayev, M. A. Nadolskiy, and A. V. Prokhorov. "Precision of machining on CNC machines." Izvestiya MGTU MAMI 6, no. 2-2 (March 20, 2012): 129–30. http://dx.doi.org/10.17816/2074-0530-68466.

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The authors consider the algorithm of creation of mathematical model of form-building system of CNC machine-tool, allowing to consider errors of positioning of movable objects of the machine with help of introduction of the module of correction in the operating program.

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25

Norris, D. "The complete guide to CNC machining." Production Engineer 64, no. 4 (1985): 10. http://dx.doi.org/10.1049/tpe.1985.0091.

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26

Lee, Jeng-Dao, Cheng-Wei Tsai-Lin, Yi-Cheng Lee, Min-Che Liu, and Li-Yin Chen. "Fully automatic CNC machining production system." MATEC Web of Conferences 108 (2017): 04002. http://dx.doi.org/10.1051/matecconf/201710804002.

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27

Breaz, Radu-Eugen, Sever-Gabriel Racz, and Octavian-Constantin Bologa. "5-axes modular CNC machining center." MATEC Web of Conferences 112 (2017): 06004. http://dx.doi.org/10.1051/matecconf/201711206004.

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28

Tseng, A. A., S. P. Kolluri, and P. Radhakrishnan. "A CNC machining system for education." Journal of Manufacturing Systems 8, no. 3 (January 1989): 207–14. http://dx.doi.org/10.1016/0278-6125(89)90042-3.

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29

Newman, S. T., and A. Nassehi. "Universal Manufacturing Platform for CNC Machining." CIRP Annals 56, no. 1 (2007): 459–62. http://dx.doi.org/10.1016/j.cirp.2007.05.110.

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30

Rădulescu, Mara-Cristina, and Bruno Rădulescu. "Simulation of a CNC Machining Program." Bulletin of the Polytechnic Institute of Iași. Machine constructions Section 68, no. 4 (December 1, 2022): 105–8. http://dx.doi.org/10.2478/bipcm-2022-0040.

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31

Sun, Peng. "CNC Processing Method of Complicated Curved Surface." Advanced Materials Research 785-786 (September 2013): 1181–84. http://dx.doi.org/10.4028/www.scientific.net/amr.785-786.1181.

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To get complicated curved surface parts in wire cut electronic discharge machining, a rotary CNC processing table was designed. Through establishing the mathematical equations of the general motion form, the several major processed forms are obtained. Then the processing system and its experimental device were established. Through machining experiment and error analysis, it shows that the system has high machining quality and low cost and has practical applicability, to produce a novel research direction for solving the difficult problems of machining spatial curved surface parts.

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32

Kong, Fan Xin, Jian Min Zuo, Hong Yan Hao, and Bo Rong Zhou. "Study on System of 3D Virtual NC Machining Environment." Applied Mechanics and Materials 44-47 (December 2010): 859–63. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.859.

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This paper, combining with actual machining situation of CNC milling , put forward system architecture based 3D（three-dimensional）visual virtual machining environment. Based on key technologies including geometric modeling ，behavioral modeling technology and NC code analysis of simulation system of three-dimensional virtual CNC milling，it developed simulation system of CNC milling that can realize the function of operation and programming.

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33

Wang, Yan Zhong, Liang Wei Hou, Yan Qiang Liu, Rong Shen, Can Hui Wu, Hong Xia Ge, Zu Zhi Zhang, Wu Zou, and Yuan Li. "Research on Machining Method of Complex Surface Face Gears." Applied Mechanics and Materials 163 (April 2012): 233–37. http://dx.doi.org/10.4028/www.scientific.net/amm.163.233.

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This paper describes the machining method of complex surface face gear used CNC machine tools and hob cutter, Based on surface characteristics and gear hob principle. A coordinate transformation process is explained in detail in the five axes CNC machining of complex parts. A CNC hob method is proposed about surface orthogonal gear. An experiment is done for validating the method.

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34

Anggraini, Lydia, and Ivan Junixsen. "OPTIMATION PARAMETERS OF CNC MILLING PROGRAMMING MACHINE ON THE PROCESS TIME AND ITS EFFECT ON THE EFFICIENCY." Journal of Mechanical Engineering and Mechatronics 3, no. 2 (January 18, 2019): 62. http://dx.doi.org/10.33021/jmem.v3i2.538.

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The problems revealed in this research is about Optimization parameters of CNC milling programing machine on the process time and its effect on the efficiency. The purpose of this research are to know the effect of feed rate, depth of cut, and maximum stepdown on processing time in CNC milling programming and searching for the best machining parameters that yield optimal processing time on CNC milling programming. The result can be in the simulation of machining distance or operation time, length of feed step or feed cut length, and length of step without feeding or fast traverse length. Experiment result data is used for see the influence, and contribution of each parameter to the machining process time, also the contribution of the optimized parameters for each process that makes the CNC milling machining process time, and cost will be more efficient.

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35

Zhang, Lian Jun, Chun Li He, and Guang Jun Chen. "Application of Tool Compensation in CNC Machining." Materials Science Forum 800-801 (July 2014): 435–39. http://dx.doi.org/10.4028/www.scientific.net/msf.800-801.435.

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Tool compensation determines the machining precision and quality . There are tool length compensation,tool radius compensation and corner radius compensation in CNC system .The parameters of these compensation are all static.The purpose of this study was that the machining precision and quality were improved by changing the parameters of tool compensation,based upon changing the static parameters into the dynamic parameters of tool compensation.The three tool compensations were introduced and discussed about these being used in machining process and the function in processing.The concept of dynamic tool compensation was proposed in this paper. The method was used that the dynamic parameter substituted the static parameter in the processing by calculating . The process machining crafts information was included in tool compensation in every process step. The computer program was finished about how to calculate the dynamic parameter. The results indicate that high-precision machining is within the range of the maximum probability and the large machining error is within the range of the minimum probability by useing this method. Further more, the end qualified product is more than before.Process indicators and tool compensation merged is a breakthrough research by probability calculating for impoving the machining precision.We confirmed that the proposed method could be l used widely.

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36

Almeida, Sergio Tadeu, John Mo, Cees Bil, Songlin Ding, and Xiangzhi Wang. "Conceptual Design of a High-Speed Wire EDM Robotic End-Effector Based on a Systematic Review Followed by TRIZ." Machines 9, no. 7 (July 7, 2021): 132. http://dx.doi.org/10.3390/machines9070132.

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Exotic materials such as titanium offer superior characteristics that, paradoxically, make them hard-to-cut by conventional machining. As a solution, electric discharge machining (EDM) stands out as a non-conventional process able to cut complex profiles from hard-to-cut materials, delivering dimensional accuracy and a superior surface. However, EDM is embodied in CNC machines with a reduced axis and machining envelope, which constrains design freedom in terms of size and shape. To overcome these CNC constraints, traditional machining using six-axis industrial robots have become a prominent research field, and some applications have achieved cost efficiency, an improved envelope, and high flexibility. However, due to the lack of stiffness and strength of the robot arm, accuracy, material rate removal, and surface finishing are not comparable to CNC machining. Therefore, the present study investigates the design of a novel WEDM combined with six-axis robotic machining to overcome the limitations of traditional robotic machining and enhance EDM applications. This study extends the work of a conference paper to confirm potential outcomes, quantifying and ranking undesired interactions to map technical problems and applying the TRIZ approach to trigger solutions. Finally, an effective robotic end-effector design is proposed to free EDM from CNC and deliver robotic machining as a flexible and accurate machining system for exotic materials.

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37

Xu, Sha, En Qi Wu, and Guo Liu. "Study and Implementation of CNC Lathe Machining Simulation System." Applied Mechanics and Materials 395-396 (September 2013): 1222–26. http://dx.doi.org/10.4028/www.scientific.net/amm.395-396.1222.

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Virtual manufacturing technology is used to simulate the computer numerical control (CNC) lathe, virtual prototype of the CNC lathe is established. In the simulating process, the explain module and the check module of the CNC code are analyzed, the differential radial dynamic scaling technology is used to simulate the workpiece forming process, then the motion simulation of the virtual CNC lathe system is realized, and the system is drived by the CNC code. The machining process and workpiece forming process can be observed directly in the virtual environment, so the correctness of the CNC code can be checked in advance to avoid the interference, collisions or other problems in the actual lathe processing and reduce the the scrap rate of the workpiece and tool in the actual machining process.

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38

Dowluru, Sreeramulu, Roopsandeep Bammidi, Patta Srinivasa Rao, Kummari Tavitiraju, Nemalipuri Manisankar, and Banki Sunil Kumar. "A FRAME WORK FOR SEAMLESS INTEGRATION OF DESIGN AND MANUFACTURING USING CNC." International Journal of Engineering Applied Sciences and Technology 7, no. 4 (August 1, 2022): 227–32. http://dx.doi.org/10.33564/ijeast.2022.v07i04.036.

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Machining is an important manufacturing process that is used in a wide range of applications. From aerospace applications to the manufacturing of energy systems we see a major reliance on machining. Nowadays, CNC machining is found in many industries to aid production by manufacturing process. CNC machining is absolutely essential for manufacturing and it is important. Some major benefits of CNC machining is manufacturing are greater efficiency, more accuracy and fabrication. In this project focus on gaining an improved understanding of the mechanics of machining and different factors that contribute to part quality. The aim of this work is to develop a frame work for seamless integration of design and manufacturing using CNC machine. For this process involves some steps. The selection of the component and design a 3D model of the component using CATIA software is presented here. Later generate the tool paths and program (contains G & M codes) using Dell CAM software. A post processor is used to converts the CAM data into specific commands that can be read a machine controller to move the cutting tool along the programmed paths. After the basic selections and decisions the preparation of a program will be done. After the lots of observation will go for fabrication of component using CNC vertical milling machine to achieve a designed shape with smooth finished surface, high accuracy and less machining time which directly increases the productivity.

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Dowluru, Sreeramulu, Roopsandeep Bammidi, Patta Srinivasa Rao, Kummari Tavitiraju, Nemalipuri Manisankar, and Banki Sunil Kumar. "A FRAME WORK FOR SEAMLESS INTEGRATION OF DESIGN AND MANUFACTURING USING CNC." International Journal of Engineering Applied Sciences and Technology 7, no. 3 (July 1, 2022): 277–82. http://dx.doi.org/10.33564/ijeast.2022.v07i03.039.

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Machining is an important manufacturing process that is used in a wide range of applications. From aerospace applications to the manufacturing of energy systems we see a major reliance on machining. Nowadays, CNC machining is found in many industries to aid production by manufacturing process. CNC machining is absolutely essential for manufacturing and it is important. Some major benefits of CNC machining is manufacturing are greater efficiency, more accuracy and fabrication. In this project focus on gaining an improved understanding of the mechanics of machining and different factors that contribute to part quality. The aim of this work is to develop a frame work for seamless integration of design and manufacturing using CNC machine. For this process involves some steps. The selection of the component and design a 3D model of the component using CATIA software is presented here. Later generate the tool paths and program (contains G & M codes) using Dell CAM software. A post processor is used to converts the CAM data into specific commands that can be read a machine controller to move the cutting tool along the programmed paths. After the basic selections and decisions the preparation of a program will be done. After the lots of observation will go for fabrication of component using CNC vertical milling machine to achieve a designed shape with smooth finished surface, high accuracy and less machining time which directly increases the productivity.

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Zhang, Chun Liang, and Yuan Yuan Wang. "Realization on Cycloid Tooth Profile for CNC Processing." Applied Mechanics and Materials 197 (September 2012): 60–63. http://dx.doi.org/10.4028/www.scientific.net/amm.197.60.

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The machining difficulty of cycloid disk has limited the extensive application of Cycloidal-pin gear planetary mechanism. The conventional machining methods and devices are a main reason. A new method is provided through a 3D software simulation and CNC numerical machining to assure the machining precision of cycloid disk and reduce the machining difficulty. The detail comparisons with old methods are analysized. The modeling and path stimulation are expressed. The NC programs are output. The method can largely reduce the production difficulty of cycloid disk and make high precise cycloidal transmission more accessible.

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Fatriyana, Maya. "CNC PROGRAM AND PROGRAMMING OF CNC MACHINE." Journal of Mechanical Science and Engineering 7, no. 1 (October 7, 2020): 019–23. http://dx.doi.org/10.36706/jmse.v7i1.37.

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A programming to make parts are CNC Programming (Computer Numerical Control Programming) for machines. An NC program consists of a sequence of instructions that control the motion and automatic sequences of an NC Machine to perform a particular processing task. In a general sense, the term NC programming refers to the creation of control data for machining workpieces on NC and CNC machines. NC programming has a decisive influence on the cost-effectiveness and profitability of NC manufacturing. The selection of a programming system is mostly guided by the need for software that is suitable for the application at hand, readily available, and as universally applicable as possible.

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Yang, Zhaojun, Chao Chen, Jili Wang, and Guofa Li. "Reliability Assessment of CNC Machining Center Based on Weibull Neural Network." Mathematical Problems in Engineering 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/292197.

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CNC machining centers, as the key device in modern manufacturing industry, are complicated electrohydraulic products. The reliability is the most important index of CNC machining centers. However, simple life distributions hardly reflect the true law of complex system reliability with many kinds of failure mechanisms. Due to Weibull model’s versatility and relative simplicity and artificial neural networks’ (ANNs) high capability of approximating, they are widely used in reliability engineering and elsewhere. Considering the advantages of these two models, this paper defined a novel model: Weibull neural network (WNN). WNN inherits the hierarchical structure from ANNs which include three layers, namely, input layer, hidden layer, and output layer. Based on more than 3000 h field test data of CNC machining centers, WNN has been successfully applied in comprehensive operation data analysis. The results show that WNN has good approximation ability and generalization performance in reliability assessment of CNC machining centers.

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Guo, Peng, Yijie Wu, Guang Yang, Zhebin Shen, Haorong Zhang, Peng Zhang, Fei Lou, and Hengbo Li. "A Feedrate Planning Method for the NURBS Curve in CNC Machining Based on the Critical Constraint Curve." Applied Sciences 11, no. 11 (May 27, 2021): 4959. http://dx.doi.org/10.3390/app11114959.

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The curvature of the NURBS curve varies along its trajectory, therefore, the commonly used feedrate-planning method, which based on the acceleration/deceleration (Acc/Dec) model, is difficult to be directly applied in CNC machining of a NURBS curve. To address this problem, a feedrate-planning method based on the critical constraint curve of the feedrate (CCC) is proposed. Firstly, the problems of existing feedrate-planning methods and their causes are analyzed. Secondly, by considering both the curvature constraint and the kinematic constraint during the Acc/Dec process, the concept of CCC which represents the relationship between the critical feedrate-constraint value and the arc length is proposed. Then the CCC of a NURBS curve is constructed, and it has a concise expression conforming to the Acc/Dec model. Finally, a feedrate-planning method of a NURBS curve based on CCC and the Acc/Dec model is established. In the simulation, a comparison between the proposed method and the conventional feedrate-planning method is performed, and the results show that, the proposed method can reduce the Acc/Dec time by over 40%, while little computational burden being added. The machining experimental results validate the real-time performance and stability of the proposed method, and also the machining quality is verified. The proposed method offers an effective feedrate-planning strategy for a NURBS curve in CNC machining.

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Cheng, Xiao Min, Gen Zhou, Peng Wu, and Yue Ding Wu. "Research on CNC Machining System of Directly Driven by Image Based on PMAC." Applied Mechanics and Materials 599-601 (August 2014): 405–8. http://dx.doi.org/10.4028/www.scientific.net/amm.599-601.405.

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This paper establishes a system that can automatically generate CNC code based on readable image formats such as *. jpg, *. gif, *. bmp, *. pcd, *. tif, and make use of machine tool for CNC machining. This system first vectorizes an image by using preprocessing such as smooth processing, edge detection, and contour tracking, and converts it into CNC code, then generates a program that can be identified by PMAC, and drives machine tool to process CNC machining. At last, an example proves the validity of this method.

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Li, Xia, and Hong Bin Liang. "Development of a STEP-NC Controller for 5-Axis Machining of NURBS Surfaces." Advanced Materials Research 317-319 (August 2011): 1940–48. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.1940.

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In conventional machining of free form surfaces, incomplete information exchange between CNC and CAD/CAM results in many limitations need to be rectified. In the paper, a new structure of CNC based on STEP-NC is proposed. A 5-axis real-time interpolator for NURBS surfaces machining is realized. A STEP-NC controller has been developed, which is a software modular CNC system. The CNC system has been installed on a tilt-rotary type 5-axis machine tool. The milling experiment has been performed.

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Liu, Ying, Fan Xie, Jie Liu, and Jin Cheng Wang. "The NC Machining Post-Processing Technology Based on UG." Advanced Materials Research 753-755 (August 2013): 1254–57. http://dx.doi.org/10.4028/www.scientific.net/amr.753-755.1254.

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Post-processing technology is the key to CNC automatic programming technology and an important module of the CAD / CAM system. Post-processing technology converts the NC program that is produced by the CNC automatic programming tool into the file that can be identified by CNC system. Moreover, the generated tool path files must match with the CNC system. Post-processing techniques and UG software are briefly introduced. Using them, a post-processor for FANUC CNC systems is created. The program that generated by the special processor is contrasted with the general processor. The results illustrat that using the dedicated post-processor in engineering applications can improve programming efficiency and processing reliability.

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Liang, H., H. Hong, and J. Svoboda. "A Combined 3D Linear and Circular Interpolation Technique for Multi-Axis CNC Machining." Journal of Manufacturing Science and Engineering 124, no. 2 (April 29, 2002): 305–12. http://dx.doi.org/10.1115/1.1445154.

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In multi-axis CNC machining of sculptured surfaces, a linear interpolation technique has been used to generate the command signals for positions along the straight line segments that connect each consecutive data point. Due to the rotational movements superimposed on the translational movements in multi-axis CNC machining, the actual cutter contact (CC) point moves along a space curve path, while the linear interpolation technique generates positions along the straight line path. The nonlinear curve segments deviate from the linearly interpolated line segments resulting in nonlinearity errors, which in turn, commonly cause difficulties to ensure high precision machining. An interpolator design technique for solving the nonlinearity errors problem in multi-axis CNC machining is presented. A combined 3D linear and circular interpolation principle is developed on the basis of the 3D linear and circular interpolation principles. The new designed interpolator is capable of driving the rotation movement pivot along a predesigned 3D curve path, so that the CC point motion trajectory is via a straight line connecting machining data points. Therefore, the proposed interpolator design technique on-line eliminates nonlinearity errors, and provides a solution to the nonlinearity errors problem for multi-axis CNC machining.

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Li, Ai Qin, and Kun Tang. "A New Intelligent CNC Compound Machine." Applied Mechanics and Materials 644-650 (September 2014): 731–34. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.731.

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The new intelligent computer number control (CNC) compound machine is introduced.The machining can load and unload automatically by industrial robot,and can synchronously carry on three processes for drilling,chamfering and tapping with high-composite and high-efficiency .Thus this machining can achieve unmanned intelligent operation in production .

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Cioca, Lucian-Ionel, Radu-Eugen Breaz, and Sever-Gabriel Racz. "Selecting the Safest CNC Machining Workshop Using AHP and TOPSIS Approaches." Safety 7, no. 2 (April 2, 2021): 27. http://dx.doi.org/10.3390/safety7020027.

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Machining operations on computer numerically controlled (CNC) machine tools are essential for the machining industry. Most of these operations take place in machining workshops. Safety issues in machining workshops shops can affect not only the health of the operators, which is extremely important, but also the productivity of the process and the accuracy of the parts. The research presented in this article addresses the issue of evaluating the safety of a CNC machining workshop, using a combined approach based on the analytic hierarchy process (AHP) and technique for order performance by similarity to ideal solution (TOPSIS) methods. A set of four evaluation criteria was proposed and the methods of processing the information for each criterion were used to extract the significant data needed for the evaluation. The proposed method was used to select the safest CNC machining workshop out of a total of three considered for assessment.

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Wang, Kun Qi, Jing Wei Yang, and Chuan Chang Li. "CNC System Based on FPGA for Line Contact Machining." Applied Mechanics and Materials 241-244 (December 2012): 1444–48. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.1444.

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A novel CNC system for line contact machining is put forward to mill ruled surface efficiently. The motion control card based on FPGA is designed in the system for line contact machining. To meet the complex interpolation requirements of CNC system, NC embedded PC structure is used to improve the performance of the CNC system. Computer input and output program by C + + Builder are operated in DLL with WinIO component, to realize the communication between PC and movement control card. Three interpolation modules are simulated in Quartus II. Simulation result shows that linear interpolation, circular interpolation and complex interpolation function are realized on the motion control card based on FPGA, and the line contact machining can be realized in the CNC system efficiently.

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