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Relevant bibliographies by topics / Machine-tools - Numerical control - Programming

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Academic literature on the topic 'Machine-tools - Numerical control - Programming'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 January 2023

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Journal articles on the topic "Machine-tools - Numerical control - Programming"

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Kolczyńska, Katarzyna, and Krzysztof Turczyński. "New solutions of programming numerical control machine tools." Mechanik, no. 7 (July 2016): 730–31. http://dx.doi.org/10.17814/mechanik.2016.7.146.

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Zhou, Jian Hong, Peng Shen, and Zheng Weng. "Study on Numerical Control System of Lampcover Spinning Machine." Applied Mechanics and Materials 336-338 (July 2013): 1303–8. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.1303.

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Chinese spinning technology has developed for more than 40 years. Especially in recent years, various kinds of spinning equipment have been developed and contributed a lot to Chinese equipment manufacturing industry, but it is blank in the light industry and civil industry. Due to the high cost and programming complexity of NC machine tools, we have no dedicated spinning machine and mostly rely on simple manual in the lampcover production. As to the above problems, we developed the lampcover NC spinning machines that can generate the track automatically and complete automatic control in the machining process.

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Piquero Calleja, J. M., E. M. Rubio Alvir, and M. A. Sebastián. "Computer-Aided System for Teaching Machining with Numerical Control." Materials Science Forum 625 (August 2009): 35–41. http://dx.doi.org/10.4028/www.scientific.net/msf.625.35.

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This paper presents SimUned-CN, software to learn the programming for Computer Numerical Control Machine Tools. This software is able to interpret any code of numerical control and simulates both lathes as milling machines. In addition, it has developed a help system for users less experts. Finally, the application takes up a small size, requires few resources and is able to run on most computers.

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Wang, Shan, and Bao Hua Wang. "Teaching Reform of Numerical Control Machine Tools and Programming Based on Modern Engineering Education." Advanced Materials Research 591-593 (November 2012): 2216–19. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.2216.

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Modern engineering education focuses on enhancing the comprehensive quality of talents and training their practice, innovation as well as openness. In this case, the course of numerical control machine tools and programming must respond positively to the development demand in higher vocational colleges. Under the guidance of its ideas, through purposefully, designedly integrating curriculum resources, strengthening practice teaching and reforming teaching methods together with teaching means, this paper aims at cultivating well-qualified engineering talents to better adapt to the development of society, science and technology in the 21st century.

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Haas, Titus, Sascha Weikert, and Konrad Wegener. "MPCC-Based Set Point Optimisation for Machine Tools." International Journal of Automation Technology 13, no. 3 (2019): 407–18. http://dx.doi.org/10.20965/ijat.2019.p0407.

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Numerical control code is typically used for manufacturing a workpiece using machine tools. Most state-of-the-art approaches decouple the set point optimisation into two steps: the geometry and the feed rate optimisation that does not necessarily result in time-optimal set points for the desired geometry. Given the originally programmed geometry through the numerical control code, dynamic constraints of the machine tool, and maximum permissible contour error for the optimisation, a model predictive contouring control based set point optimisation approach is developed to generate time-optimal set points for machine tools globally. A suitable error definition and its linearisation are used whereby the optimisation problem can be represented by a quadratic programming problem with linear constraints. Compared to most state-of-the-art methods, a direct approach is presented and no previous geometry optimisation step is required. Depending on the demands of accuracy, different maximum contour error constraints and penalisation as well as various maximum permissible axis velocities and accelerations are presented and tested on a test bench. The method is shown to be adaptable to different demands on the set points, and the contour errors can be affected by either the constraints or penalising factors.

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Mwinuka, Tito E., and Beda M. Mutagahywa. "2D AutoCAD Geometric Data Extraction and Post- Processing for Numerical Control." Tanzania Journal of Engineering and Technology 34, no. 1 (2013): 44–54. http://dx.doi.org/10.52339/tjet.v34i1.458.

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In this paper, a method of extracting 2D geometric data from AutoCAD drawing and post- processing for Numerical Control (NC) is presented. Geometric data already available in the Drawing Interchange Files (DXF) can be utilized to accurately and economically prepare part programs for controlling NC/CNC machine tools. AutoCAD, being generalpurpose software, stores its geometric data in a form that cannot be directly applied for automatic generation of Numerical Control (NC) codes. The way around the discrepancy between the structure of a drawing database (DXF files) and the information requirement for part programming is addressed in this work. NC programming of a test componentdrawn in AutoCAD is also presented.

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Yu, Ying Liang, and Zai Dan Geng. "The Study on Application of Worm’s Numerical Control Machining." Key Engineering Materials 455 (December 2010): 594–98. http://dx.doi.org/10.4028/www.scientific.net/kem.455.594.

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One of the significant features of CNC technological superiority is in the practical applications, according to the necessary movement of processed parts required, we can use generating method to transform CNC machine tools and receive the desired results. This article discussed under the premise that lack of special equipment, transforming ordinary horizontal CNC milling to machine worm gear. The advantage of this numerical transformation approach is using the processing functions of thread and tapered thread instruction, skillfully translating into control of the CNC machining worm, expanding the CNC machining capabilities and the scope of practical application. Also apply the advantages of CNC technology, reduce or eliminate the accumulation of worm in the processing of pitch error which makes the worm processing precision and smoothness of worm drive better. This paper discussed the principles of numerical control transformation, transformation of milling machine structure and the conversion calculation of parameters in programming, analyzed the causes and processing effects of worm gear processing errors control and accuracy improving.

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Pereverzev, P. P., and D. Yu Pimenov. "Optimization of control programs for numerically controlled machine tools by dynamic programming." Russian Engineering Research 35, no. 2 (2015): 135–42. http://dx.doi.org/10.3103/s1068798x15020197.

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Wang, Chao, Lin Nan Han, Yuan Yao, Qian Sheng Zhao, and Qing Xi Hu. "Research on Numerical Control Machining Simulation Based on Power Mill and VERICUT." Applied Mechanics and Materials 121-126 (October 2011): 2200–2204. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.2200.

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To prevent the collision of tools and machine during the process of numerical control processing, reduce the number of cutting experiments and improve the production efficiency, it is a better way by using virtual simulation. This paper based on a mold cavity model of STL files, realized the numerical control programming based on Power Mill, researched the dynamic simulation process based on VERICUT, and at last verified the correctness and practicability of VERICUT simulation result by physical processing, which provided a reliable reference for physical machining.

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Gao, Hong Hong, Ping Li, and Qi Cheng Lao. "Numerical Control Reformation for Gear Shaving Machine." Advanced Materials Research 411 (November 2011): 158–62. http://dx.doi.org/10.4028/www.scientific.net/amr.411.158.

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A numerical control (NC) reformation scheme is presented to reduce the failure rate and improve the performance and efficiency of the old gear shaving machine. On the basis of study the mechanical structure and shaving methods, the numerical control system 828D and the servo driver S120 developed by Siemens Company are used to replace the old control system. The diagonal shaving method is selected to design shaving program after analysis of the process route. The reformation completed parametric programming, realized numerical control of the shaving machine and improved the reliability and flexibility of the system.

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Dissertations / Theses on the topic "Machine-tools - Numerical control - Programming"

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黃永耀 and Wing-yiu Wong. "An octree and face oriented approach for NC machining." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1989. http://hub.hku.hk/bib/B3120899X.

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Peng, Jie. "Design and analysis of a CNC system for machining and monitoring." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/29730.

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The development of unmanned machining systems has been a recent focus of manufacturing research. Computer Numerical Control (CNC) units, which monitor and control many tightly coupled machining tasks, are inseparable parts of the unmanned manufacturing system. This thesis addresses the detailed design and analysis of a modular CNC system for a milling machine. The feed drive control system of the machine tool is thoroughly studied. The mathematical model for the feed drive control system, which consists of a motion controller, power amplifiers and DC-servo motors, is developed and experimentally verified. A method of estimating cutting forces from current drawn by feed drive motors is developed. The viability of the current sensor as a feeding-force sensing component is illustrated and experimentally tested on the milling machine. Successful application of the current sensor to tool breakage detection in milling operation is presented. The performance of the multi-axis contouring system in precision machining is discussed. The contouring errors induced by feed drive positioning systems in CNC machine tools is investigated using the state space model of the CNC system. The influence of the cutting force on the accuracy of machining is shown to be negligible for feed drives driven by ball leadscrews. Various control strategies for the improvement of machining accuracy are tested in the simulation studies.<br>Applied Science, Faculty of<br>Mechanical Engineering, Department of<br>Graduate

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Basar, Feza. "Development Of A 3 Axes Pc Numerical Control System For Industrial Applications." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1022565/index.pdf.

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In this study, a three-axes PC numerical control system for industrial applications has been developed. With this system, fast and cheap prototyping of designed objects can be realized. The system consists of software and a hardware which includes an XYZ positioning table and three step motors controlling this table. A proper drive circuit for the stepper motors is utilized. The software digitizes two dimensional drawings of three dimensional objects and generates the control signals for the XYZ positioning table. The software is developed under Microsoft Studio Visual Basic 6.0 environment regardless of the OS of the PC. The parallel port of the PC has been utilized for generating the necessary control signals for the stepper motors.

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Castro, Marcelo Hirai. "Processo para obtenção de furos quadrados utilizando máquinas ferramentas CNC com ferramenta em rotação." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264536.

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Orientador: Amauri Hassui<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-21T02:13:50Z (GMT). No. of bitstreams: 1 Castro_MarceloHirai_M.pdf: 4008200 bytes, checksum: a0c71450e4b5c3ac934e22f6e3cc9f4b (MD5) Previous issue date: 2012<br>Resumo: A inovação é a chave para o diferencial da indústria no mercado competitivo atual. Fazer diferente, melhor e mais barato sempre agrega valor ao produto. Por outro lado, a resistência às mudanças faz parte do comportamento humano, seja na sociedade, ou na indústria. O objetivo principal deste trabalho é estudar a viabilidade de se fazer furos não cilíndricos com uma ferramenta em rotação utilizando máquinas-ferramenta CNC. Estes sempre foram obstáculos na indústria de fabricação pela dificuldade de obtenção. Sendo assim, o processo apresentado nesse trabalho busca usinar um furo quadrado com a mesma configuração de ferramentas e fixação de peças utilizadas para um furo cilíndrico, tão comum à indústria. Isso visa reduzir custos de fabricação e facilitar a obtenção de furos não cilíndricos com os recursos de equipamentos programáveis existentes no chão de fábrica. A partir de um modelo matemático, a máquina é programada para executar movimentos sincronizados entre a rotação e os deslocamentos do eixo da ferramenta. Diversas programações foram testadas em diferentes máquinas ferramenta CNC, com diferentes comandos, com e sem recursos de alta velocidade, com diferentes quantidades de pontos programados, interpolações lineares e circulares. A partir dos experimentos, foram analisadas as configurações das máquinas, a capacidade de execução do controlador numérico instalado, a velocidade desenvolvida pela máquina na operação e a geometria obtida dos furos quadrados. Os experimentos apontam que para executar o furo quadrado, os comandos devem ser capazes de controlar um eixo rotativo como eixo propriamente dito, além de sincronizarem mais três eixos lineares. O crítico para este tipo de operação é a velocidade desempenhada pela máquina, sendo o fator mais significativo, o tempo que o comando precisa para o processamento do bloco de programação, independentemente da ativação de recursos de alta velocidade, interpolações lineares ou circulares. Verificou-se também que quanto maior a quantidade de pontos para compor a trajetória do centro da ferramenta, melhor será a geometria obtida do furo. Sendo assim, as máquinas ferramenta CNC que estão em operação na indústria são capazes de realizar a furação não cilíndrica de forma muito próxima à furação cilíndrica quanto ao tempo de usinagem e ao sistema de fixação da ferramenta e da peça, sendo necessária uma programação sincronizada do eixo spindle presente em toda e qualquer máquina ferramenta<br>Abstract: The innovation is the key for the differential of the industry on the competitive market nowadays. To make different, better and cheaper always it is worth a lot to the product. By the other side, the resistance to changes makes part of the human behavior, in society, or in the industry. The main goal of this work is to study the feasibility to machining of non-cylindrical holes by a tool in rotation using CNC machine tools. That always has been offering obstacles to manufacturing industry by the difficulty of fabrication. Thus, the process presented on this work will machining a square hole with the same configuration of tools and systems for fixation of the parts, used for a cylindrical drilling, so common to industry. This intends to reduce the costs of fabrication and make easier to get non-cylindrical drilling using resources of the programmable equipment which are working at the shops. From a math model on, the machine is programmed to execute synchronized movements between the rotation and the displacements of the axis of the tool. Different programs were tested in different CNC machine tools, with different controllers, with and no resources for high speed, with different quantity of programmed points, with linear and circular interpolations. From the experiments, it was analyzed the configuration of the machines, the capacity for execution of the controller installed, the speed developed by machine at the operation and the geometry of the square holes. The experiments show that to machine a square hole, the controllers must be able to control a rotating axis itself, beyond to synchronize three axis. The critical to this kind of operation is the speed developed by the machine, being the most significant factor, the time the controller needs to process the block of programming, independently the activation of resources for high speed, linear or circular interpolations. It was verified than as larger the amount of points to compose the trajectory of the center of tool, better will be the geometry of the hole. Thus, the CNC machine tools in operation in the industry are able to machine the non-cylindrical drilling in a way very closely the cylindrical drilling as the time of machining and the fixing system of the tool and parts, requiring a programming that synchronizes the main spindle installed in any machine tool<br>Mestrado<br>Materiais e Processos de Fabricação<br>Mestre em Engenharia Mecânica

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Karyagina, Marina. "Life cycle cost modelling for fault-tolerant CNC architectures." Thesis, Queensland University of Technology, 1998.

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Quesada, Robert E. "Alternative assessment of computer numerical control (CNC) machine tool students." Online version, 1999. http://www.uwstout.edu/lib/thesis/1999/1999quesada.pdf.

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Olson, Kevin. "Set up reduction and standardization for computer numerical control pulley cell at West Industries, Inc." Online version, 1998. http://www.uwstout.edu/lib/thesis/1998/1998olsonk.pdf.

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Wiggins, John Sterling. "Design and specification of a PC-based, open architecture environment controller." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/17299.

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Roberts, Bryndan. "Integration of an electrical discharge machining module onto a reconfigurable machine tool." Thesis, Nelson Mandela Metropolitan University, 2014. http://hdl.handle.net/10948/6182.

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Electrical Discharge Machining (EDM) is a non-contact manufacturing process in which material is removed from a metal workpiece by high frequency electrical pulses produced between an electrode and the workpiece. EDM machines are usually stand-alone devices, and are quite expensive. The objective of this research was to integrate an EDM machine and an existing reconfigurable CNC machine tool, using a modular approach, to enable conventional milling and EDM to be conducted in a co-ordinated fashion on the same machine tool.

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Hecker, Rogelio Lorenzo. "Part surface roughness modeling and process optimal control of cylindrical grinding." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/16704.

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Books on the topic "Machine-tools - Numerical control - Programming"

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Computer numerical control programming. Prentice Hall, 1997.

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Laviana, Kenneth J. Basic computer numerical control programming. 2nd ed. Merrill Pub. Co., 1990.

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Jon, Stenerson, and Stenerson Jon, eds. Computer numerical control: Operation and programming. 3rd ed. Prentice Hall, 2005.

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Joseph, Pusztai, ed. Computer numerical control programming. Prentice-Hall, 1990.

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Joseph, Pusztai, ed. Computer numerical control programming. Prentice Hall, 1990.

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Horath, Larry. Computer numerical control programming of machines. Merrill, 1993.

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Numerical control programming in APT. Prentice-Hall, 1986.

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Stenerson, Jon. Computer numerical control: Operation and programming. Prentice Hall, 1996.

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Stanley, Gabrel, ed. Programming of computer numerically controlled machines. Industrial Press, 1992.

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CNC programming handbook: A comprehensive guide to practical CNC programming. 2nd ed. Industrial Press, 2003.

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Book chapters on the topic "Machine-tools - Numerical control - Programming"

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Kumar, Kaushik, Divya Zindani, and J. Paulo Davim. "Machine Tools: Numerical Control Perspective." In Materials Forming, Machining and Tribology. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-76075-9_1.

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Wang, Jun. "Application of Computer Aided Design and Numerical Control Technology in Error Analysis of Numerical Control Machine Tools." In Application of Intelligent Systems in Multi-modal Information Analytics. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-74814-2_24.

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Li, Xiao-dong. "Human Factors Application in Exterior Design of the Numerical Control Machine Tools." In Proceedings of the 6th International Asia Conference on Industrial Engineering and Management Innovation. Atlantis Press, 2015. http://dx.doi.org/10.2991/978-94-6239-148-2_72.

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Shi, Xiumin, Yi Dai, Xuecui Yang, and Wei Liu. "Arc Interpolation Control of Numerical Control Machine Tools and Its Realization Based on Multi-axis Motion Control Card." In Advances in Intelligent and Soft Computing. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-03718-4_10.

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Thyer, G. E. "Computer-aided part programming." In Computer Numerical Control of Machine Tools. Elsevier, 1991. http://dx.doi.org/10.1016/b978-0-7506-0119-1.50018-7.

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Thyer, G. E. "Part programming for lathe work." In Computer Numerical Control of Machine Tools. Elsevier, 1991. http://dx.doi.org/10.1016/b978-0-7506-0119-1.50017-5.

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Thyer, G. E. "Part programming for milling and drilling work." In Computer Numerical Control of Machine Tools. Elsevier, 1991. http://dx.doi.org/10.1016/b978-0-7506-0119-1.50016-3.

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"Convex Programming Numerical Tools." In Control Theory and Design. Elsevier, 1997. http://dx.doi.org/10.1016/b978-012179190-2/50016-1.

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Xu, Xun. "Program CNCs." In Integrating Advanced Computer-Aided Design, Manufacturing, and Numerical Control. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-59904-714-0.ch009.

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A CNC machine can be programmed in different ways to machine a workpiece. In addition to creating the cutting program, many other factors also need to be considered or programmed. These include workholding devices, cutting tools, machining conditions as well as the machining strategy. The first generation CNCs were programmed manually and punched tapes were used as a medium for transferring the machine control data (MCD), that is, G-codes into a controller. Tapes were later replaced by RS232 cables, floppy disks, and finally standard computer network cables. Today’s CNC machines are controlled directly from files created by CAD/CAM or CAM software packages, so that a part or assembly can go directly from design to manufacturing without the need of producing a drafted paper drawing of the component. This means that for the first time, bringing design and manufacturing under the same automation regime becomes a reachable target. Error detection features give CNC machines the ability to alert the operator in different ways including giving a ring to the operation’s mobile phone if it detects that a tool has broken. While the machine is awaiting replacement on the tool, it would run other parts that are already loaded up to that tool and wait for the operator. The focus of this chapter is on a detailed account of the basics of CNC programming, and the emphasis is on G-code and Automatic Programming Tool (APT). G-code is still the dominant manual programming language for CNC machine tools. It is also the main form of control commands many CAD/CAM (or CAM) systems output. APT was developed soon after G-codes and CNC machine tools were developed to alleviate the drudgery work of straight G-code programming. Modern CAD/CAM systems these days are now becoming the main-stream tools for CNC programming.

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Thyer, G. E. "Control of machine tools." In Computer Numerical Control of Machine Tools. Elsevier, 1991. http://dx.doi.org/10.1016/b978-0-7506-0119-1.50007-2.

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Conference papers on the topic "Machine-tools - Numerical control - Programming"

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Michaloski, John L., Johannes A. Soons, and Frederick M. Proctor. "Accessing the Performance of Model-Based Control in a Distributed Machine Tool Control Environment." In ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/detc2004-57792.

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Although Computerized Numerical Controller (CNC) machine tools have greatly improved precision, quality and productivity, there are still many areas where inaccuracies and inefficiencies remain. Model-Based Control (MBC) is a technique to advance machine tool accuracy and part quality by compensating for machine and process errors. Nominal Differential Expansion (NDE) thermal compensation is one MBC approach which we have integrated into a CNC turning machine testbed. To allow portability and redeployment of the CNC technology, the MBC testbed was implemented as a component-based system using a distributed programming infrastructure. This paper looks at software and performance issues related to distributed MBC architecture, which is slower due to increased overhead from network communication. We look at the requirements of distributed infrastructure as implemented by the Distributed Component Object Model (DCOM), and assess the performance of various DCOM configurations matching the MBC requirements. Results from our analysis of the distributed performance using MBC-based DCOM configurations are presented.

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Sang, Zhiqian, and Xun Xu. "Development of a Smart Computer Numerical Control System." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65984.

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Traditional Computer Numerical Control (CNC) machines use ISO6983 (G/M code) for part programming. G/M code has a number of drawbacks and one of them is lack of interoperability. The Standard for the Exchange of Product for NC (STEP-NC) as a potential replacement for G/M code aims to provide a unified and interoperable data model for CNC. In a modern CNC machine tool, more and more motors, actuators and sensors are implemented and connected to the NC system, which leads to large quantity of data being transmitted. The real-time Ethernet field-bus is faster and more deterministic and can fulfill the requirement of data transmission in the high-speed and high-precision machining scenarios. It can provide more determinism on communication, openness, interoperability and reliability than a traditional field-bus. With a traditional CNC system using G/M code, when the machining is interrupted by incidents, restarting the machining process is time-consuming and highly experience-dependent. The proposed CNC controller can generate just-in-time tool paths for feature-based machining from a STEP-NC file. When machining stoppage occurs, the system can recover from stoppage incidents with minimum human intervention. This is done by generating new tool paths for the remaining machining process with or without the availability of the original cutting tool. The system uses a real-time Ethernet field-bus as the connection between the controller and the motors.

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Xie, Tancheng, and Xiang Nan. "Research and Applications of Fuzzy-PID Control on PFPL." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66582.

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This dissertation mainly introduces Fuzzy-PID Control which are used in the PFPL (Pseudo-flexible Production Line). The servo system plays an important role in the NC machine. The performance of servo system decide the quality of NC machine in very great degree This dissertation research and develop a milling and paring manufacture unit of open CNC system – Numerical control unit of PFPL. By using the GT-SV motion controller, put up the software and hardware platform of NC unit rapidly with module design method and the target-oriented programming idea. Take NC milling machine as the process platform, this dissertation use intellectual PID control method to improve the servo control of motion controller, through the pointing accuracy survey of the milling machine, confirmed the actual effect of Fuzzy-PID control.

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Bosetti, Paolo, and Francesco Biral. "Rapid Development of a CNC Software Within Manufacturing Automation Courses." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68420.

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A significant part of a Manufacturing Automation course is devoted to CNC machine tools, their architecture, and the part programming languages (APT, ISO G-code and so on). Nevertheless, it is not trivial to provide the students with a complete understanding of the relationships between the machine dynamics, the path planning strategy, and the control systems. For this reason, a short laboratory course has been developed aimed at the programming of a simplified CNC software with the following functionalities: to parse a part program written in a subset of the ISO G-code; to process the instruction blocks and to generate trapezoidal velocity profiles; to convert the velocity profiles reference trajectory; to interpolate the reference trajectory at the servo loop control frequency. In order to shorten the development time, the following choices have been made. The parser only implements a small subset of the ISO G-code, which is point-to-point positioning (G00), linear interpolation (G01) and full stop (M30). The velocity profiles are calculated as acceleration-limited trapezoidal profiles with zero-feed velocity boundary conditions. Finally, the system is developed in Ruby, which is an object-oriented scripting language, easy to learn and well suited for rapid prototyping of complex software systems. This is why the project has been named RNC (Ruby Numerical Control). At the course start, the overall system architecture is explained and is translated in the set of Ruby classes that have to be developed, and classes interfaces are mandatorily determined. During the laboratory activity, students work in teams, and each team is encouraged to work separately on the development of each Ruby class. At the end of the development phase, the students can interface the RNC they wrote with a machine tool simulator (developed separately) and use the whole software system to test the accuracy of the tool-tip trajectories as a function of the system parameters (servo loop gains, motors torque, masses and dynamic performance of the virtual machine tool). Moreover, thanks to the object-based architecture of RNC and to the common, pre-determined class interfaces, the students can then swap and mix different implementations of the above reported functionalities, as well as enhanced versions provided by the teacher. With respect to other similar Mathlab/Simulink based solutions, the presented laboratory activity brings a more detailed insight into a CNC software still limiting the code complexity thanks to the Ruby language and it is only based on open-source tools.

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Han, Jiang, Xiao-qing Tian, Lian Xia, Fu-gen Li, Jie Cheng, and Bao Chen. "Key Technologies of Embedded Gear Machining CNC System." In ASME 2013 International Manufacturing Science and Engineering Conference collocated with the 41st North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/msec2013-1083.

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A reconfigurable gear machining numerical control system (NC/CNC) architecture is proposed in this paper. The CNC platform can be quickly applied to gear hobbing, shaping, milling and grinding machine, through simple reconfiguring or parameter setting. Parametric automatic programming technology, high speed and high precision electronic gearbox, process database technology are studied. Based on the analysis of the gear machining process, the mathematic model on automatic programming of gear machining is established. Based on the Windows CE operating system, the CNC gear machining automatic programming system is developed on the ARM+DSP hardware platform, including the design of human-machine interface, automatic programming algorithm and other modules. With the support of the automatic programming and process database modules, NC codes can be generated automatically just by inputting gear parameters, tool parameters and process parameters, then, the interpolation data structure can be generated by interpreter module. A new kind of software electronic gearbox (EGB) and its implementation methods are also researched in the embedded CNC. Data flow among the modules is analyzed. Finally, experiments are conducted, and the tracking error and contour error are analyzed. The results show that the proposed gear machining CNC architecture is effective.

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Spicer, J. Patrick, and Hector J. Carlo. "Simultaneous Scalable-Reconfigurable Manufacturing System Design and Inventory Control Policy Decision Making." In ASME 2006 International Manufacturing Science and Engineering Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/msec2006-21083.

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Scalable reconfigurable manufacturing systems (scalable-RMS) consist of standardized modular equipment that can be quickly added or removed to adjust the production capacity. Each modular machine, referred to as a scalable reconfigurable machine tool (scalable-RMT), is composed of identical modules that can be added to, or removed from the machine depending on its required throughput. In previous work, conceptual scalable-RMTs have been described. Additional scalable-RMTs are presented in this paper to highlight the applicability of this concept in manufacturing. As an extension to existing scalable-RMS literature, this paper incorporates multiple products in the system configuration design. Specifically, this paper proposes an integer programming based iterative algorithm for finding the minimum cost configuration of a multi-product system. It is shown that the proposed algorithm converges to the optimal solution under the majority of practical conditions. Then, a mathematical formulation to minimize the system investment and operational costs in a multi-product scalable-RMS is presented. A numerical example compares the solution obtained using the traditional approach of determining the system design and then the inventory control policy versus the proposed simultaneous approach. It is concluded that the simultaneous approach yields significant improvement over the traditional (decoupled) approach.

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Uebel, Karl, Henrique Raduenz, Petter Krus, and Victor Juliano de Negri. "Design Optimisation Strategies for a Hydraulic Hybrid Wheel Loader." In BATH/ASME 2018 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/fpmc2018-8802.

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This paper deals with design optimisation of hydraulic hybrid drivelines during early concept design phases. To set the design parameters of a hybrid driveline such as gear ratios, pump/motor displacements and size of energy storage, the energy management of the hybrid machine needs to be considered as well. This is problematic since a nested design and control optimisation normally requires substantial computer power and is time-consuming. Few previous studies have treated combined design and control optimisation of hydraulic hybrid vehicles using detailed, non-linear component driveline models. Furthermore, previously proposed design optimisation methods for on-road vehicles are not suitable for heavy off-road machines operating in short repetitive cycles with high transient power output. The paper demonstrates and compares different optimisation approaches for design and control optimisation combining deterministic dynamic programming and non-gradient based numerical optimisation. The results show that a simple rule-based energy management strategy can be sufficient to find the optimal hardware design even though non-optimal control laws are used.

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Barata, Jorge M. M., André R. R. Silva, and Raúl L. M. Garcês. "A Design Study of a Low-Cost Heterogeneous Parallel Computer." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-2108.

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Abstract A design study of a low-cost heterogeneous parallel computer based on already existing hardware is presented. The UNIX operating system is used together with PVM for message passing control. The parallel machine is constructed using existing Intel PC’s and Alpha workstation platforms. The new techniques and algorithms are successfully applied to the grid generation problem based on the solution of partial differential equations with control of the boundary point distribution. Two different programming models were used. One uses decomposition of the domain into as many parts as there are processors, and revealed high reductions on the total turnaround time, although load balancing was a major problem. The other programming model has the possibility of changing the position of the points of the interface between each sub-grid, and allows reductions of the total turnaround time up to 1.6 times for the case of 3 processors, while the quality characteristics of the final grid are maintained. The communication times were reduced up to 7.5% of the total turnaround times, but the recursive nature of the numerical iterative process of the grid generation method causes a substantial increase in the number of iterations, reducing the parallel machine performance.

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Bin, Li, Dai Yi, Cao Yajuan, and Li Qingjun. "Electromagnetic Compatibility Issues in Numerical Control Machine Tools." In 2010 International Conference on Electrical and Control Engineering (ICECE). IEEE, 2010. http://dx.doi.org/10.1109/icece.2010.901.

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Yu, Tianbiao, Jing Wang, Tianrui Zhang, Da Ha, Wei Yao, and Wanshan Wang. "Research on Recycling of Numerical Control Machine Tools." In 2011 Second International Conference on Digital Manufacturing and Automation (ICDMA). IEEE, 2011. http://dx.doi.org/10.1109/icdma.2011.346.

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