Relevant bibliographies by topics / CNC vertical milling machine

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'CNC vertical milling machine'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "CNC vertical milling machine"

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Ahmad Bakir, Azman, Zainal Abidin Ahmad, Mazlan Mohamed, Mohd Nor Hakim Hassan, and Muhamad Iqbal bin Ahmad. "Feed Rate Influence on Motion Error Characteristics of CNC Vertical Milling Machine." Applied Mechanics and Materials 393 (September 2013): 36–41. http://dx.doi.org/10.4028/www.scientific.net/amm.393.36.

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The increasing number of the Computer Numerical Control (CNC) machines usage in the manufacturing field appears to suggest that they are expected to be in good running condition. Machine tools such as CNC vertical milling machines are meant to produce precise work parts. Motion errors are factors which can directly affect the accuracy of the machine. This study presents an opportunity for interested parties to understand the characteristics of motion errors that exist in the CNC vertical milling machines with different feed rate settings. The purpose of this project is to find out any abnormalities apparent to the machine performance as the feed rate setting is increased. The motion errors of the CNC machines were examined by using a measuring device, namely Double Ball Bar (DBB). This equipment is designed to examine machine performance by measuring the accuracy of its movements. This device, which has two balls of identical size at the end of the bar, was mounted on a spindle and onto a special holder which is mounted on the working table. The machine is programmed to move in a circular motion, clockwise and anti-clockwise in three planes, XY, YZ and ZX. Any deviation from the standard data will represent the imperfection of the machines condition, especially mechanical components such as the slide bearing, spindle bearing or servo motor responses. By knowing the most significant error origin, the corrective countermeasures can then be carried out.
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Kwintarini, Widyanti, Agung Wibowo, and Yatna Yuwana Martawirya. "Mathematical Approach for Geometric Error Modeling of Three Axis CNC Vertical Milling Machine." Applied Mechanics and Materials 842 (June 2016): 303–10. http://dx.doi.org/10.4028/www.scientific.net/amm.842.303.

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The aim of this paper overviews about to find out the errors that come from three axis CNC vertical milling machine. The errors come from, the CNC milling machine can be modelled into mathematical models and later on these error models will be used to analyse the errors in the measured data. Many errors from CNC machine tools have given significant effects toward the accuracy and repeatability of manufacturing process. There are two error sources come from CNC machine tools such as tool deflection and thermal distortions of machine tool structure. These errors later on will contribute to result in the geometrical deviations of moving axis in CNC vertical milling machine. Geometrical deviations of moving axis such as linear positioning errors, roll, pitch and yaw can be designated as volumetric errors in three axis machine tool. Geometrical deviations of moving axises happen at every axis in three axis CNC vertical milling machine. Geometrical deviations of moving axises in linear and angular movement has the amount of errors up to twenty one errors. Moreover, this geometrical errors play the major role in the total amount of errors and for that particular reason extra attention towards the geometrical deviation errors will be needed along machining process. Each of geometrical error of three axes vertical machining center is modeled using a homogeneous transformation matrix (HTM). The developed mathematical model is used to calculate geometrical errors at each axis and to predict the resultant error vector at the interface of machine tool and workpiece for error compensation.
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Ford, DG, A. Myers, F. Haase, S. Lockwood, and A. Longstaff. "Active vibration control for a CNC milling machine." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 2 (April 4, 2013): 230–45. http://dx.doi.org/10.1177/0954406213484224.

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There is a requirement for improved three-dimensional surface characterisation and reduced tool wear when modern computer numerical control (CNC) machine tools are operating at high cutting velocities, spindle speeds and feed rates. For large depths of cut and large material removal rates, there is a tendency for machines to chatter caused by self-excited vibration in the machine tools leading to precision errors, poor surface finish quality, tool wear and possible machine damage. This study illustrates a method for improving machine tool performance by understanding and adaptively controlling the machine structural vibration. The first step taken is to measure and interpret machine tool vibration and produce a structural model. As a consequence, appropriate sensors need to be selected and/or designed and then integrated to measure all self-excited vibrations. The vibrations of the machine under investigation need to be clearly understood by analysis of sensor signals and surface finish measurement. The active vibration control system has been implemented on a CNC machine tool and validated under controlled conditions by compensating for machine tool vibrations on time-varying multi-point cutting operations for a vertical milling machine. The design of the adaptive control system using modelling, filtering, active vibration platform and sensor feedback techniques has been demonstrated to be successful.
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O¨zel, Cihan, Ali I˙nan, and Latif O¨zler. "An Investigation on Manufacturing of the Straight Bevel Gear Using End Mill by CNC Milling Machine." Journal of Manufacturing Science and Engineering 127, no. 3 (August 1, 2005): 503–11. http://dx.doi.org/10.1115/1.1863256.

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Accurate manufacturing of bevel gears is an important problem for small workshops because the module milling cutters used for manufacturing are not accurate enough for the task. In this study, manufacturing of straight bevel gears is investigated by using end mills in CNC milling with a vertical machining center. By using this method, use of auxiliary apparatus, special cutters (such as the circular cutter, the rack cutter, etc.), and special machine tools are not required. For the study, first the straight bevel gear was modeled by Tredgold’s approach and manufacturing equations of the straight bevel gear were obtained. For the straight bevel gear manufacturing, a macro program was prepared and used. Afterward, the straight bevel gear was manufactured by using this program in a CNC milling machine, the Dyna 2900 machine. The results of the measurement data for a single tooth on the gear manufactured and the theoretical values are presented and discussed.
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Luo, Qing Hai, Wen Wu Peng, and Peng Fei Zhang. "Structure Improvement of the Principal Axis of a CNC Vertical Boring-Milling Machine." Advanced Materials Research 199-200 (February 2011): 1320–23. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.1320.

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The rigidity of the principal axis of a CNC vertical boring-milling machine was analyzed, and the belt tension and end deformation were also calculated. A project was proposed to improve the structure of the principal axis for finish machining. After the discharge belt pulley was applied on the principal axis, the force transmission and the rigidity of principal axle system were improved considerably. The design and process means were proposed for the three added parts of the improved structure. The improved structure is simplified, secure and low-cost. The machining precision was increased, and the fixing was also become convenient.
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Kaczmarek, Jan, Sebastian Lange, Robert Święcik, and Artur Żurawski. "Diagnostics of the rotary table of vertical CNC milling center using machine tool probe." Mechanik, no. 10 (October 2016): 1484–85. http://dx.doi.org/10.17814/mechanik.2016.10.422.

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Zhu, Xiu Rong. "Study on the NC Machining Theory and Simulation of Hypoid Gear." Applied Mechanics and Materials 539 (July 2014): 34–37. http://dx.doi.org/10.4028/www.scientific.net/amm.539.34.

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Based on NC machining principle of hypoid gears and NC machining with high efficiency quality, This paper discusses the feasibility of the hypoid gear processing, establishes the mathematical model of face gear wheel hypoid milling machining adjustment, that will be take the basic data into vertical machining center machine tool, tool, fixture, the installation and adjustment of parameters, and we write a program of the CNC machining and corresponding code, combined with the specific wheel blank parameters to milling simulation test and milling tests, we obtain a new process methods.
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Piyush pandey, Piyush pandey. "Process Parametric Optimization of CNC Vertical Milling Machine Using Taguchi Technique in Varying Condition." IOSR Journal of Mechanical and Civil Engineering 6, no. 5 (2013): 34–42. http://dx.doi.org/10.9790/1684-0653442.

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Daymi, A., M. Boujelbene, E. Bayraktar, A. Ben Amara, and D. Katundi. "Influence of Feed Rate on Surface Integrity of Titanium Alloy in High Speed Milling." Advanced Materials Research 264-265 (June 2011): 1228–33. http://dx.doi.org/10.4028/www.scientific.net/amr.264-265.1228.

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Titanium alloys have been widely used in industries, especially aerospace, energy and medical industries, due to their good mechanical and chemical properties. However, titanium alloys are typically difficult-to-cut materials. Milling induced surface integrity, including anisotropic surface roughness, residual stress, surface microstructure alterations and microhardness, has received little attention. This work investigated the effect of machining conditions, especially the federate, on surface integrity of workpiece of Ti-6Al-4V alloy machined using high speed ball end milling process. The experimental tests were performed at various cutting parameters and carried out in dry conditions on a vertical five-axis CNC milling machine, using a coated carbide tool. Surface finish was studied based on 3D topographic maps and microhardness depth profiles beneath the machined surface. Microstructure of the sub-machined surface was observed using an optical microscope in order to investigate the metallurgical deformation. X-ray diffraction analysis is performed to obtain the residual stress distribution beneath the surface.
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Mahmud, M. A., A. K. M. Nurul Amin, and Muammer Din Arif. "Optimization of Cutting Parameters in High Speed End Milling of Soda Lime Glass with Coated Carbide Tools Using Directional Compressed Air Blowing." Advanced Materials Research 576 (October 2012): 111–14. http://dx.doi.org/10.4028/www.scientific.net/amr.576.111.

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An experimental study of high speed machining of soda lime glass using directional compressed air blowing for removal of the ductile chips from the machined surface, is presented. High speed end milling of soda lime glass is performed on a vertical CNC milling machine to observe the effects of machining parameters i.e. spindle speed, depth of cut and feed rate on the resultant surface roughness. The design of the experiments was performed following the Central Composite Design (CCD) of the Response Surface methodology (RSM) using the Design Expert Software. Optimization of machining parameters was conducted using desirability function of the Design Expert software based on minimum surface roughness criterion. Finally, experimental verification tests were conducted to validate the predicted optimized value.
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Dissertations / Theses on the topic "CNC vertical milling machine"

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Kalina, Vladimír. "Malá CNC frézka." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-319489.

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The content of this diploma thesis is the design and construction of small vertical CNC milling machines. In the thesis are listed and machines that appear in today's production on the market. The components are designed for tools, for ball screw, linear guide. Parts are attached to the 3D models with vertical machine and drawings of the proposed machinery.
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Trunda, Jiří. "Technologie výroby frézováním na CNC strojích." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228382.

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Objective graduation theses, is determining and propound optimal alternate manufacturing section servant as base of electron microscope. As a production method is used chippy cutting on numerical controlled machine behind by the help of usage progressive cutting tools. To construction control program was use 3D CAD/CAM system of Solid Vision, Ltd. Corporation. Product working is complete project and procedure on manufacturing section, that is in finish well-founded technoeconomic evaluation.
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Láznička, Petr. "Manipulační nástrojová jednotka." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232125.

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The thesis is focus on design solutions of automatic tool changer for CNC vertical milling machine SLV 300 in cooperation with the design company IMC/Engineering s. r. o. The main goal of theses is the creation of several design variants based on the critical research of similar machinery and the subsequent choice of the most appropriate solution. The assessment of the various options is done with amount of the changes caused on the existing design of the machine. It is essential the suitability of the solution from the perspective of the customer's company SolidVision s. r. o. Design solution is being designed for the possibility of a presentation device with unique features in its class, which is meant to be a simple maintenance free design with the possibility of easy service access For the chosen solution of the automatic tool changer are by calculation verified by the most exposed part of the device. In the thesis is also design documentation, for a better understand of the design solution.
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Jagoš, Roman. "Konstrukce malé CNC frézky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230234.

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This master´s thesis deals with design of small CNC milling machines and comparing CNC tabletop milling machines in the world market. It is also done design of small CNC milling machine through the use of contemporary and modern trends, used in design of machine tools.
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Večeř, Petr. "Konstrukční návrh malé modelářské CNC frézky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-254333.

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This thesis deals with the structural design of small model CNC milling machines. The work includes research modeller CNC milling machines available primarily on the Czech market, on whose basis are then selected the appropriate parameters for machine design. The thesis contains further structural calculations, selection of appropriate components, production drawings and 3D model that shows the final solution of constructed facility.
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Resiga, Alin. "Design Optimization for a CNC Machine." PDXScholar, 2018. https://pdxscholar.library.pdx.edu/open_access_etds/4257.

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Minimizing cost and optimization of nonlinear problems are important for industries in order to be competitive. The need of optimization strategies provides significant benefits for companies when providing quotes for products. Accurate and easily attained estimates allow for less waste, tighter tolerances, and better productivity. The Nelder-Mead Simplex method with exterior penalty functions was employed to solve optimum machining parameters. Two case studies were presented for optimizing cost and time for a multiple tools scenario. In this study, the optimum machining parameters for milling operations were investigated. Cutting speed and feed rate are considered as the most impactful design variables across each operation. Single tool process and scalable multiple tool milling operations were studied. Various optimization methods were discussed. The Nelder-Mead Simplex method showed to be simple and fast.
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Ebrahimi, S. Morteza K. "Dynamic modelling and simulation of a CNC milling machine." Thesis, Cardiff University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287909.

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Son, Seung-Kil 1964. "A hybrid type small 5-axis CNC milling machine." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/29275.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2002.
Includes bibliographical references (leaves 116-119).
5-axis CNC milling machines are important in a number of industries ranging from aerospace to consumer-die-mold machining because they can deliver high machining accuracy with a spindle tilting capacity. Most of these machines have serial mechanisms so that low static and dynamic stiffness become very critical design issues especially for high speed machining. Parallel mechanisms have recently received attention from machine tool designers because of their inherent potential for stiffness and because of their compactness. However, much of the promised advantages of parallel machines only occur within a very small region of their workspace with the expense of the large machine-tool foot print. We discuss some of the kinematic and structural challenges to extracting machining performance from serial and parallel machines. We compare a hybrid machine, which combines serial and parallel mechanisms, with typical serial and parallel machines such as Euler angle machines and the Hexapod. In particular, we consider singularities, reversal characteristics, and manufacturability. We show that hybrid machines can benefit from the advantages of serial and parallel mechanisms while avoiding most potential pitfalls of both mechanisms. However, hybrid structures can suffer from the manufacturing problem of over-constraint. We show that the degree of over-constraint depends on the size of the parallel machine. We have designed and fabricated a small hybrid 5-axis motion platform, the MIT-SS-1, which can tolerate this over-constraint through a novel layout of axes. Numerical and experimental test results of the MIT-SS-1 are presented and compared. Finally we show that this structure has potential as a small 5-axis CNC milling machine.
by Seung-Kil Son.
Ph.D.
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Ajilo, Deborah (Deborah M. ). "eyeDNA : Tool Condition Monitoring for a desktop CNC milling machine." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/115670.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 81-84).
Tool wear is a major obstacle to realizing full automation in metal cutting operations. In this thesis, we designed and implemented a low cost Tool Condition Monitoring (TCM) system using off-the-shelf sensors and data acquisition methods . Peripheral end milling tests were done on a low carbon steel workpiece and the spindle vibration, cutting zone temperature and spindle motor current were recorded. Features from these data sources were used to train decision tree models in MATLAB with the aim of classifying the stages of tool wear. Results showed that the feature sets fusing information from all data sources performed the best, classifying the tool wear stage with up to 93% average accuracy.
by Deborah Ajilo.
S.M.
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Hanzal, Jiří. "Návrh malé modelářské CNC frézky s pevným stolem." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-433604.

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The topic of this work is the design of a small model CNC milling machine with a fixed table for machining wood, plastic, or light alloys (Al, Zn, etc.). It also includes a calculation report and drawing documentation of selected nodes. The beginning of this work consists of an introduction to the issue of milling machines, their distribution and subsequent market analysis. Subsequently, the input parameters are designed on the basis of market analysis and in the last part there is a calculation report, the design of the milling machine itself and a short economic evaluation.
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Books on the topic "CNC vertical milling machine"

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Inc, Cincinnati Milacron, ed. Parts and service manual for Cincinnati Milacron vertical 3-spindle 5-axis high performance rail type profiler with Acramatic CNC model 950-MC Release 3.0. Cincinnati, Ohio: Cincinnati Milacron, 1996.

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Book chapters on the topic "CNC vertical milling machine"

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El-Midany, T. T., I. M. Elewa, and A. Mostafa. "Design and Manufacturing of CNC Training Vertical Milling Machine." In Proceedings of the Twenty-eighth International, 147–53. London: Macmillan Education UK, 1990. http://dx.doi.org/10.1007/978-1-349-10890-9_21.

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Nangare, Akshay S., and V. S. Jadhav. "Optimization of Process Parameters for Machining of EN8 Steel on CNC Vertical Milling Machine." In Lecture Notes on Multidisciplinary Industrial Engineering, 503–11. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4550-4_31.

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Jabran, Sohaib, Shajee Ahmed, Sarmad Afzal, and Faizan Tariq. "Axes CNC Milling Machine." In Functional Reverse Engineering of Strategic and Non-Strategic Machine Tools, 41–56. First edition. | Boca Raton : CRC Press, 2021. |: CRC Press, 2021. http://dx.doi.org/10.1201/9780367808235-5.

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Gordon, Seamus, and Michael T. Hillery. "Linear Motor based High Speed CNC milling Machine." In Proceedings of the 33rd International MATADOR Conference, 519–24. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0777-4_80.

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Kumar, Narendra, Prashant K. Jain, Puneet Tandon, and Pulak M. Pandey. "Toolpath Generation for Additive Manufacturing Using CNC Milling Machine." In 3D Printing and Additive Manufacturing Technologies, 73–82. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0305-0_7.

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Gurbuz, Riza. "Mechatronics Approach for Desk-Top CNC Milling Machine Design." In Solid State Phenomena, 175–80. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908451-60-4.175.

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Svetlík, Jozef, Juraj Kováč, Patrícia Dudová, Jozef Dobránsky, and Michal Považan. "Manufacturing Precision of the CNC Milling Machine with Three Controlled Axes." In Industry 4.0: Trends in Management of Intelligent Manufacturing Systems, 87–97. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-14011-3_8.

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Suh, Suk-Hwan, and Jung-Jae Lee. "Flank Milling of Ruled Surface with Additionally-Five-Axis CNC Machine." In Integrated Design and Manufacturing in Mechanical Engineering, 389–98. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5588-5_39.

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Abdul Hamid, Rahimah, Wan Nur Amirah Wan Muhamad, Raja Izamshah, and Mohd Shahir Kasim. "Surface Roughness Analysis of Zirconia Dental Restoration Manufactured Through CNC Milling Machine." In Lecture Notes in Mechanical Engineering, 361–71. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-9539-0_36.

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Ayala-Chauvin, Manuel, Fernando Saá, Ricardo Rodríguez, Carles Domènech-Mestres, and Genís Riba-Sanmartí. "Design and Construction of a Low Cost CNC Milling Machine for Woodworking." In Communications in Computer and Information Science, 379–90. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71503-8_29.

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Conference papers on the topic "CNC vertical milling machine"

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Sridevi, S., J. Dhanasekar, and G. Manikandan. "A methodology of retrofitting for CNC vertical milling machine." In 2015 International Conference on Robotics, Automation, Control and Embedded Systems (RACE). IEEE, 2015. http://dx.doi.org/10.1109/race.2015.7097257.

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Li, Heliang, Haiting Fan, and Yunbin Cheng. "Design of MR Damping Platform of XK7132 Vertical CNC Milling Machine." In 2019 Chinese Control Conference (CCC). IEEE, 2019. http://dx.doi.org/10.23919/chicc.2019.8865313.

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Wang, Chun-Xian, Fan Zhang, Yan-Fei Zhu, Shuo-Shuo Wei, and Sheng-Lai Hu. "Research on the Key Technologies of a New CNC Turret Vertical Drilling and Milling Machine." In 2015 International Conference on Material Science and Applications (icmsa-15). Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icmsa-15.2015.119.

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Mekid, S. "Enhanced Deterministic Design: Application to a Micro CNC Machine Design." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-38171.

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This paper introduces an enhanced deterministic design approach for the design of a micro mechanical system with the objective to achieve better accuracy through miniaturisation. The methodology of design encompasses optimisation using Taguchi technique, finite element modelling, and, added functions considering a number of micro physical problems that may characterise the micro mechanical system. Typical micro physical problems of a micro milling machine were enumerated with possibilities to include some of them within the overall methodology was observed. Micro physical effects may not all have a known model. An objective function was created to satisfy part of the specifications. An example of a vertical column of the micro mill was designed and evaluated within the concept of the proposed design methodology. Initial results and error assessment measured on the micro machine are presented.
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Tani, Giovanni, Raffaele Bedini, Alessandro Fortunato, and Claudio Mantega. "Dynamic Hybrid Modeling of the Vertical Z Axis in an HSM Machining Center: Towards Virtual Machining." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84810.

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The paper describes the dynamical real-time simulation of the Z axis of a five axis machining center for high speed milling. The axis consists of a mechanical structure: machine head and electro-mandrel, a CNC Control System provided with feed drives and a Pneumatic System to compensate the weight of the entire vertical machine head. These three sub-systems have been studied and modeled by means of: • FEM modeling of the mechanical structure; • an equation set to represent the main functions of the CNC; • an equation set to represent the functioning of the Pneumatic System. These different modeling sub-systems have been integrated to obtain the entire actual dynamical behavior of the Z axis. A particular analysis was developed to represent the friction phenomena by a specific analytical model. Experimental activity was developed to test and validate the different modeling sub-systems, and other experimental tests were performed on the machining center to compare simulation outputs with experimental responses.
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Wu, H., D. Xue, J. Harder, J. L. Ronsky, P. Poncet, J. Jaremko, G. Clynch, A. Gyorffy, and R. F. Zernicke. "Design and Manufacturing of Customized Braces for Scoliosis Treatment." In ASME 2002 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/detc2002/cie-34477.

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A new method to design and manufacture customized braces is introduced in this research for scoliosis treatment. In this method, a geometric model of a scoliosis patient’s torso is achieved using a laser optical scanning device. The brace geometry is obtained by generating the offset geometry of the torso’s surface, selecting vertical boundaries, removing holes and noise data, creating symmetrical geometry, and modifying the geometry near the pelvis curves. Manufacturing of the brace is conducted by producing a male die with a sculptured surface using a custom-designed 5-axis CNC milling machine and creating the plastic brace using a thermoforming process.
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Singh, Arshpreet, and Anupam Agrawal. "Experimental Investigation on Elastic Spring Back in Deformation Machining Bending Mode." In ASME 2015 International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/msec2015-9283.

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Deformation machining is a combination of thin structure machining and single point incremental forming. It enables the creation of thin monolithic structures with complex geometries in one setup, employing conventional manufacturing techniques. Elastic spring back is a major contributor to dimensional inaccuracy of the thin formed structures. Correct prediction of elastic spring back and its compensation is of utmost importance for the overall quality of the formed components. In the present work, an experimental study on elastic spring back in deformation machining bending mode components has been performed. Effect of machining and forming parameters along with dimensional attributes on the elastic spring back has been studied. The components were fabricated using a 3 axis CNC vertical milling machine and inspected for elastic spring back on a coordinate measuring machining (CMM). Other factors contributing to the dimensional inaccuracy, such as curvature in the bent structure and inclination of structure along its length have also been explored.
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Ammouri, A. H., and R. F. Hamade. "Toward an Affordable Automation Scheme of Friction Stir Processing." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-53314.

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Friction stir processing (FSP), an offshoot from friction stir welding (FSW), is an intricate operation that involves refining the material by a rotating tool. Active control of the resulting size and distribution uniformity of grain structure is desirable. Achieving such a control across the processed area requires real-time control of the process input variables in order to control the pertinent state variables (e.g., temperature, strain, and strain rate) throughout the process. Many active control schemes typically used in friction stir processes (such as position-, speed-, force-, and torque-control schemes) require the utilization of dynamometers to provide feedback to the control loop. Many drawbacks are associated with such utilization including the complexity of the required instrumentation and control systems. Another complexity is the required rigidity of the machine tool needed to perform friction stir processes. In this work, we advance the notion of eliminating the usage of dynamometers by using the readily available motor current signals from the NC machine tool in the computer numeric control (NC) machines. This approach would drastically reduce the cost of FSP machine retrofitting. Presented in this work are guidelines for the implementation of affordable automation of CNC milling machines to perform friction stir processes. The guidelines are demonstrated by retrofitting a vertical machining center with current transducers to replace the usage of a dynamometer. The current transduces were tapped on the output of the drivers of the spindle and the z-drive motors. A custom LabVIEW software program was developed to control the machining center via direct numeric control mode and to monitor current signals which were in turn, correlated to the generated forces. To demonstrate the methodology, friction stir processing was performed on magnesium alloy sheets for a wide range of process parameters. The tool rotational speed was varied from 600 RPM to 2000 RPM and the traverse feed from 75 mm/min to 900 mm/min. Current signals were monitored during frictions stir processing and were related to the process forces which were measured using a 4-component dynamometer. Linear relations between thrust force and torques with current signals of the spindle and the z-drive motors were established and the signal to noise ratio for each correlation was investigated. It was found that the current spindle signals are highly correlated to the process torque where results can be used in a torque control loop without the need for expensive dynamometers. To a lesser extent was the correlation satisfactory between thrust force and z-drive motor signal due to bad signal to noise ratio.
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Choudhary, Rohit, Sambhav, Sunny David Titus, P. Akshaya, Jose Alex Mathew, and N. Balaji. "CNC PCB milling and wood engraving machine." In 2017 International Conference On Smart Technologies For Smart Nation (SmartTechCon). IEEE, 2017. http://dx.doi.org/10.1109/smarttechcon.2017.8358577.

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Wang, Shu-yuan, Wei-min Wang, and Xin Zhang. "The extension of the function of CNC milling machine—Slotting key-groove replaced by CNC milling machine." In EM 2011). IEEE, 2011. http://dx.doi.org/10.1109/icieem.2011.6035271.

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Reports on the topic "CNC vertical milling machine"

1

Kramer, Thomas R. Process plan expression, generation, and enhancement for the Vertical Workstation milling machine in the Automated Manufacturing Research Facility at the National Bureau of Standards. Gaithersburg, MD: National Bureau of Standards, 1987. http://dx.doi.org/10.6028/nbs.ir.87-3678.

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Kramer, Thomas R., and W. Timothy Strayer. Error prevention and detection in data preparation for the Vertical Workstation milling machine in the Automated Manufacturing Research Facility at the National Bureau of Standards. Gaithersburg, MD: National Bureau of Standards, 1987. http://dx.doi.org/10.6028/nbs.ir.87-3677.

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3

A machine operator dies after becoming caught in a computer numerical controlled vertical milling machine - Massachusetts. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, May 2008. http://dx.doi.org/10.26616/nioshsface05ma035.

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A Hispanic machine operator died when struck in the abdomen by a piece of acrylic being milled on a vertical milling machine. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, August 2007. http://dx.doi.org/10.26616/nioshsface06ca005.

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