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Journal articles on the topic 'Choice of machine tool'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Wegener, Konrad, and Atsushi Matsubara. "Special Issue on Advanced Material Driven Design of Machine Tools." International Journal of Automation Technology 14, no. 2 (2020): 261–63. http://dx.doi.org/10.20965/ijat.2020.p0261.

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The design of machine tools strongly depends on the materials chosen. Increasing requirements on machine tools require the joint optimization of material and design and thus also drive the development of new materials in this field. Digital technologies finally creating a digital shadow of the machine in development also enable the required co-development taking into consideration dynamic, thermal and long term influences and behavior, enabling state and health monitoring to increase the performance of the machine tool to the maximum possible. The choice of material for the different component

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2

Yang, Chun Qing. "The Study of CNC Machine Tools Interface Design." Applied Mechanics and Materials 109 (October 2011): 695–98. http://dx.doi.org/10.4028/www.scientific.net/amm.109.695.

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CNC Machine tools is an important tool in modern manufacturing technique. This paper analysis the use of the human size and human factors were sufficiently considered. The design principles of the choice of human size of Numerical control machine were studied.

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3

Krichevsky, M., and E. Serova. "Machine learning as a tool for choice of enterprise development strategy." E3S Web of Conferences 224 (2020): 03006. http://dx.doi.org/10.1051/e3sconf/202022403006.

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One of the main objectives of strategic management is the development and selection of strategies to achieve the desired results. The main goal of this paper is the analysis of the main domains or areas of machine learning application to support the process of strategic planning and decision making. The scientific methodology of the research studies is methods and procedures of modeling and intelligent analysis. This is theoretical and empirical paper in equal measure. This paper deals with the issues of machine learning implementation and how intellectual models and systems can be used to sup

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Molodtsov, Vladimir Vladimirovich, and Andrey Yurevich Barbin. "Reasonable Choice of Motorized Spindles with HSK Tool Connection." Applied Mechanics and Materials 607 (July 2014): 229–34. http://dx.doi.org/10.4028/www.scientific.net/amm.607.229.

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The article describes the problem of reasonable choice of parameters of main motion drive of modern multi-purpose machine tools. Authors propose a multi-purpose methodological model for reasonable estimation of operational capabilities of motorized spindles and efficiency of equipment usage for performing of required technological operations. Dependencies are provided considering influence of HSK connection on operational parameters of drives.

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5

Golovko, Aleksandr, and Sergey Petrov. "Definition of the initial information for selecting the cutting tool for automated production preparation." MATEC Web of Conferences 224 (2018): 01103. http://dx.doi.org/10.1051/matecconf/201822401103.

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The certain supply of cutting tools is formed on the machine-building enterprises of the parts group related to tooling as a result of application of technological processes. At preproduction of new pats group it is necessary to be determined with the choice of tool: to project special or to apply already present. In second case it is required to find from a database a suitable tool on totality of preset parameter. The large variety of constructions and methods of application of cutting tools hampers such choice. The article presents the initial information for selecting a cutting tool for aut

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Yan, R., F. Y. Peng, J. Z. Yang, and Bin Lin. "Tool Posture Optimization Subjected to the Rigidity of Multi-Axis Machine Tool." Key Engineering Materials 392-394 (October 2008): 271–77. http://dx.doi.org/10.4028/www.scientific.net/kem.392-394.271.

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In order to achieve higher product quality for sculptured surface productions, an advanced strategy are proposed for machining planning, namely a tool-posture-control strategy. In the tool-posture-control strategy, machining chatter is reduced by controlling the machine rigidity along cutting feed direction. This proposed strategy, which improved product quality of sculptured surface when subjected to both the part geometry and the machine rigidity constrains, is described in this paper. A new machining-planning aid called local stiffness index is developed to help tool posture planning. This

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Böhl, Sebastian, Sascha Weikert, and Konrad Wegener. "Enhancing Signal Quality of Capacitive Displacement Measurements in Machine Tool Environments." Journal of Manufacturing and Materials Processing 3, no. 3 (2019): 76. http://dx.doi.org/10.3390/jmmp3030076.

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Capacitive displacement sensors are a valuable choice for high accuracy geometric spindle measurements. Although these sensors show the specified performance in electromagnetic friendly environments, the performance may degrade drastically in machine tool environments due to electromagnetic disturbances. An in-situ testing procedure based on a cap test setup is proposed, which enables a simplified error diagnosis and verification of sensor performance. The functionality of the device and the application to different practical cases are presented. The results of these tests suggest that a decis

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8

Freiheit, Theodor, and S. Jack Hu. "Impact of Machining Parameters on Machine Reliability and System Productivity." Journal of Manufacturing Science and Engineering 124, no. 2 (2002): 296–304. http://dx.doi.org/10.1115/1.1445153.

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This paper analyzes the impact of machining parameter selection on machining system productivity. The method involves prediction of machine tool reliability from mechanical failure based on process choices and production rate. The machine reliability is then input to a machining system production configuration to estimate productivity. Through a simple turning model example, it is demonstrated that an optimal production rate for maximum productivity exists. The best system configuration for maximum productivity is shown to be affected by the level of machine reliability and the choice of proce

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9

Gouasmi, S., B. Merzoug, G. Abba, and L. Kherredine. "Material Choice for spindle of machine tools." IOP Conference Series: Materials Science and Engineering 28 (February 7, 2012): 012015. http://dx.doi.org/10.1088/1757-899x/28/1/012015.

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10

Sokova, Dagmar, Robert Cep, Lenka Cepova, and Simona Kocifajova. "Experimental Choice of Suitable Cutting Tool for Machining of Plastic." Technological Engineering 11, no. 1 (2014): 35–39. http://dx.doi.org/10.2478/teen-2014-0007.

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Abstract In today's competitive times overall development of the technology is moving somewhere further, including automotive industry, which went toward relieving material. One of the many materials which are applied in the automotive industry, are polymers. The aim of the article was to test three different types of cutters for machining material group N - nonferrous metals. The article was tested three different types of cutters from different vendors on electro material SKLOTEXTIT G 11 and samples size 12x100x500mm. The entire experiment was conducted in a company Slavík- Technické plasty

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11

Ilhan, E., T. E. Motoasca, J. J. H. Paulides, and E. A. Lomonova. "Energy Conversion Loops for Flux-Switching PM Machine Analysis." Engineering, Technology & Applied Science Research 2, no. 5 (2012): 285–90. http://dx.doi.org/10.48084/etasr.209.

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Induction and synchronous machines have traditionally been the first choice of automotive manufacturers for electric/hybrid vehicles. However, these conventional machines are not able anymore to meet the increasing demands for a higher energy density due to space limitation in cars. Flux-switching PM (FSPM) machines with their high energy density are very suitable to answer this demand. In this paper, the energy conversion loop technique is implemented on FSPM for the first time. The energy conversion technique is a powerful tool for the visualization of machine characteristics, both linear an

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12

Reddy, V. R., and A. M. Sharan. "Design of Machine Tool Spindles Based on Transient Analysis." Journal of Mechanisms, Transmissions, and Automation in Design 107, no. 3 (1985): 346–52. http://dx.doi.org/10.1115/1.3260720.

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This investigation is concerned with the design of machine tool spindles based on transient analysis. The dynamic equation of motion of a lathe spindle has been obtained using finite element analysis along with modal analysis. These equations are solved to obtain the displacement distribution along the spindle-workpiece system and thus the maximum dynamic displacement response. The system design parameters should be chosen in such a way that a combination of these would minimize the maximum dynamic displacement response. The global system matrices are replaced by condensed matrices of lower or

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13

Mahardika, Rizka. "THE USE OF TRANSLATION TOOL IN EFL LEARNING: DO MACHINE TRANSLATION GIVE POSITIVE IMPACT IN LANGUAGE LEARNING?" Pedagogy : Journal of English Language Teaching 5, no. 1 (2017): 49. http://dx.doi.org/10.32332/pedagogy.v5i1.755.

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Translation tools are commonly used for translating a text written in one language (source language) into another language (target language). They are used to help translators in translating big numbers of translation works in effective time. There are three types of translation tools being studied in the article entitled Machine Translation Tools: Tools of the Translator’s Trade written by Peter Katsberg published in 2012. They are Fully Automated Machine Translation (or FAMT), Human Aided Machine Translation (or HAMT) and Machine Aided Human Translation (or MAHT). Katsberg analyzed how each

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14

Hu, Zhi Dong, Shuo Ran Du, Bo Chang Shen, and Li Hai Wang. "Mechanical Property Analysis on Cutting Tool of the Ice and Snow Removing Machine Based on ANSYS." Applied Mechanics and Materials 779 (July 2015): 74–79. http://dx.doi.org/10.4028/www.scientific.net/amm.779.74.

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Based on the dynamic analysis of ANSYS for the intense state of cutlery and ice, the device can be judged whether it can successfully finish the ice and snow removing job. And the process of straight cutting tool of the same height, width and length with the bending one removing the same ice is analyzed using ANSYS under the same the situation. So the stress distribution diagrams were studied. Comparing the stress distribution diagrams between the cutting tools and ice and snow, some results can be gotten. In addition, the rationality of the choice of cutting tool can be proved.

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15

Lapshin, Viktor, Iliy Turkin, and Anton Kalinin. "Drop impact estimate at cutting speed growth, force characteristics upon regenerative character of tool vibration." Science intensive technologies in mechanical engineering, no. 4 (April 21, 2020): 22–31. http://dx.doi.org/10.30987/2223-4608-2020-4-22-31.

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Revealed in numerous investigations a phenomenon connecting a cutting force drop at cutting speed growth effects considerably cutting dynamics. In the paper there is considered a dynamics of cutting taking into account the regenerative origin of tool vibrations with the estimate of cutting force changes impact upon vibrations. The results obtains may serve as a basis for a cutting mode choice in machine-tools of a lathe group.

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16

Marobin, Mario. "A Comparative Method of Analysis for Evaluating Sheet Metal Machine Tool Flexibility." Key Engineering Materials 344 (July 2007): 259–68. http://dx.doi.org/10.4028/www.scientific.net/kem.344.259.

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In the machine tool sector, for production purposes, flexibility and automation are elements that play conflicting roles because greater automation generally means less flexible production. As a result, it is not easy to choose between technologies that have different degrees of automation or may even be manual. We are therefore proposing a comparative method of analysis that can be used to evaluate one machine tool with respect to another, which is used as a reference. This combination leads to the identification of breakeven points on productivity, flexibility and automation that, when taken

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17

Meng, Fu, Guan Liwen, Wang Liping, Mo Jiao, and Zhao Xiao. "Tool diameter optimization in S-shaped test piece machining." Advances in Mechanical Engineering 13, no. 1 (2021): 168781402098841. http://dx.doi.org/10.1177/1687814020988414.

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S-shaped test piece is used to assess the performance of five-axis numerical control machine tools. Compared to traditional test method and test pieces, it performs better and was agreed to be included in the draft international standard at the 79th ISO/TC39SC2 meeting. However, the lack of theoretical research is the barrier to apply for standard and to be widely used. Therefore, this paper aims to study one of the theoretical research that how to choose the suitable tool diameter. We proposed a new research method based on software AdvantEdge, Vector Method for error calculation, Microelemen

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18

Krol, Oleg, Petko Tsankov, and Volodymyr Sokolov. "RATIONAL CHOICE OF TWO-SUPPORT SPINDLES FOR MACHINING CENTERS WITH LUBRICATION SYSTEM." EUREKA: Physics and Engineering 3 (May 31, 2018): 52–58. http://dx.doi.org/10.21303/2461-4262.2018.00648.

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In the multivariate design mode, based on the effective parallel design facilities, the rational choice of the design of the two-support spindle for the machining center is the main aim of this article. A modified scheme for selecting a spindle unit is proposed, which reflects the procedure for the formation of its main components: "Representations on the Spindle Unit Variations" and "Representations on the Designer's preferences". A concept is introduced and a component of the selection scheme is described: "Procedural model", which makes it possible to realize the mechanism of forming prefer

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19

Sonawane, Shreeyash, Pallavi Patil, Ramkrishna Bharsakade, and Pankaj Gaigole. "Optimizing Tool Path Sequence Of Plasma Cutting Machine Using TSP Approach." E3S Web of Conferences 184 (2020): 01037. http://dx.doi.org/10.1051/e3sconf/202018401037.

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The paper consists of optimizing the total distance traveled by the Plasma Cutting Tool Head. It is cross-functional implementation traveling salesman problem to the core manufacturing process of plasma cutting. This study contributes to reduce the total rapid traverse length (Total Through-Air Travelled Distance) by the cutting tool (Plasma Beam), which is totally a non-productive as well as non-value adding process contributing to the machine running costs and cycle time of the product directly and indirectly. For deriving this optimal sequence for the plasma cutting head, a heuristic algori

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20

Carpenter, I. D., and P. G. Maropoulos. "Automatic tool selection for milling operations Part 1: Cutting data generation." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 214, no. 4 (2000): 271–82. http://dx.doi.org/10.1243/0954405001517667.

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The selection of tools and cutting data is a central activity in process planning and is often liable to an element of subjectivity. It is further complicated by the wide range of choice presented by the various operation types and the huge portfolio of cutters and inserts available from many different tool manufacturers. This paper describes a procedure to select consistently and efficiently tools for rough and finish milling operations performed on a computer numerical controlled (CNC) machining centre. A wide range of milling operations is considered, including faces, square shoulders, slot

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21

Brecher, Christian, and Adam Wissmann. "Compensation of Thermo-Dependent Machine Tool Deformations Due to Spindle Load Based on Reduced Modeling Effort." International Journal of Automation Technology 5, no. 5 (2011): 679–87. http://dx.doi.org/10.20965/ijat.2011.p0679.

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This paper presents the continuance of the scientific work on compensation of thermo-dependent machine tool deformations due to spindle load in consideration of rough machining. After the development of an indirect compensation method, based on a transfer function using a third order time delay element, further works have been focused on the reduction of the modeling effort. The reduction of the modeling effort makes the developed compensation approach suitable for the industry. The thermo-dependent behavior of machine tools is strongly non-linear. Hence, modeling in several operating points i

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22

Newman, Jeffrey, and Laurie Garrow. "Stacked Hybrid Discrete Choice Models for Airline Itinerary Choice." Transportation Research Record: Journal of the Transportation Research Board 2674, no. 12 (2020): 243–53. http://dx.doi.org/10.1177/0361198120953149.

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This study develops a methodology to train and apply a hybrid stacked discrete choice model for airline itinerary choice. This stacked model framework includes a data-driven component (i.e., gradient boosting machines) as well as a theory-driven component (i.e., utility maximization using generalized extreme value models). The resulting ensemble model combines attractive features of each, including the ability to conform to complex nonlinear relationships among itinerary characteristics, as well as the ability to leverage an analyst’s understanding of travel behavior tendencies and the natural

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23

Simisinov, Denis, Konstantin Porozhkiy, Olga Pozdnyakova, and Ivan Zakharov. "Analysis of methods for assessing the drilling tool performance." E3S Web of Conferences 177 (2020): 03003. http://dx.doi.org/10.1051/e3sconf/202017703003.

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The analysis of methods for assessing the drilling tool performance using various methods was performed. The applicability of the methods was assessed. Methods based on periodic comparative tests were examined in detail. The technical level and operational efficiency of the drilling tool is determined by the resource (tool driftage), drilling speed, durability, power supplied to the bottom of the well. The correct choice of a drilling tool is ultimately determined by economic assessments. The specific drilling costs are proposed to be determined taking into account the cost of one machine hour

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Mrkvica, Ivan, Vladislav Ochodek, Miroslav Janoš, and Petr Sysel. "Tension in Surface Layer of Workpiece by Different Tool´s Geometry." Advanced Materials Research 602-604 (December 2012): 1689–92. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.1689.

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This article deals with influence of the milling cutter tool’s geometry on tension in surface layer of workpiece. It describes, whether the tool brings the residual stress into the surface and its measurement by the magnetoelastic method based on the Barkhausen noise principle. The correct choice of the tool and cutting parameters has significant influence on surface layer of the component and extends so its lifetime and dependability. In this way we try to comply with permanent growing on the machine component.

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Lyubіn, Mykola, and Oleksіі Tokarchuk. "INFLUENCE OF THE METHOD OF FASTENING OF THE STRESSLESS TAGS TO THE THRESHOLD PROCESS." Vibrations in engineering and technology, no. 2(93) (May 31, 2019): 56–61. http://dx.doi.org/10.37128/2306-8744-2019-2-9.

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Introducing chipless taps into production it is necessary to take into account factors arising from the specifics of the method and factors affecting economic efficiency. Significant effect from the introduction of the machine method of manufacturing threaded holes in stainless steels with brushless taps can be obtained only if the complex of measures is observed, related to the choice of the optimum hole diameter and the quality of preparation of the hole for the thread, the choice of mounting the tap on the machine, the speed of thread extrusion, coolant equipment and others. A new contour d

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Yin, Chun Hui, Huai Jing Jing, Nuo Di Huang, and Fei Ren. "A New Compensation Method for Multi-Choice of a Five-Axis Machine with a Tilting Head." Applied Mechanics and Materials 364 (August 2013): 386–90. http://dx.doi.org/10.4028/www.scientific.net/amm.364.386.

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Postprocess capable of converting the cutter location data to machine control data is an important interface between the NC programming design and manufacture.Due to the fact that current research on multi-axis postprocess methods mostly deals with machine tool configurations whose linear and rotational movements are orthogonal, an efficient postprocess algorithm for the five-axis machine with a tilting head is presented in this paper.DMU 80P which is a five-axis machine with a tilting head is selected as an example.Its mechanism model is proposed in this paper according to the mechanism theor

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Duplák, Ján, Jozef Zajac, Zuzana Hutyrová, Miroslav Kormoš, Andrej Czán, and Bożena Kaczmarska. "Impact of Cutting Speed on the Resultant Durability of Cutting Tool in Machining Process of Steel C45." Key Engineering Materials 669 (October 2015): 294–301. http://dx.doi.org/10.4028/www.scientific.net/kem.669.294.

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Precision machining is currently intensively studied. Production of quality products fast, and precise with paying attention on environmental issues, brings many factors which counteracts to ensure these aspects. Is very crucial to know system machine – tool – workpiece and is necessary to characterize all elements and limitations connected with this system. Choice of suitable cutting tools is very important part of production process. Acquisition cost of tools in serial production is only below 10 % but in medium production can be up to 50 % of production cost. Know the characteristic of the

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28

Istomin, A. B., I. N. Gemba, and I. V. Lizunov. "Multi-tool processing in the conditions of complex automation of technical processes." Glavnyj mekhanik (Chief Mechanic), no. 7 (June 11, 2021): 24–30. http://dx.doi.org/10.33920/pro-2-2107-02.

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The article analyzes the influence of errors from elastic deformations on the accuracy of processing in the conditions of complex automation. Different variants of multi-tool processing are considered: parallel processing, when different tools are alternately, one after the other, involved in the processing of the workpiece surfaces, and parallel-sequential processing, when different surfaces of the workpiece are processed simultaneously by several tools located in the working position. Design automation in machine-building production is part of the complex problem of automation of engineering

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Chick, Garry, and Robert D. Hood. "Working and recreating with machines: Outdoor recreation choices among machine‐tool workers in western Pennsylvania." Leisure Sciences 18, no. 4 (1996): 333–54. http://dx.doi.org/10.1080/01490409609513292.

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Vrabel', Marek, Ildikó Maňková, and Numan M. Durakbasa. "Effect of Honing Parameters on Generated Surface Quality of Cylinder Liner within Automotive Engine Production." Solid State Phenomena 261 (August 2017): 189–94. http://dx.doi.org/10.4028/www.scientific.net/ssp.261.189.

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One of the key parameter in evaluation of cylindrical surface quality of the engine liners is surface roughness. A large number of process factors affecting a final surface topography, which has direct impact on fuel consumption and CO2 emission. A suitable choice of honing conditions can results not only to better surface quality, but it can contributes to reducing of environmental impacts in automobile transport. Twelve different engine cylinder liners were machined in various combinations of cutting parameters. Experimental testing was realised on real production machine tool, where process

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Cheng, E. Hsung, Tung Lin Tsai, Ming Jer Lin, et al. "Study of Using Internal Thread Whirling in Machining Titanium Dental Implant." Applied Mechanics and Materials 268-270 (December 2012): 436–41. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.436.

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Swiss-type lathe is the machine tool of choice in machining titanium dental implants. It is able to do turning, drilling, and milling in a single setup. One of the more challenging processes is the internal threading at one end of the dental implants. Threading in titanium at as little as M1.4 and as deep as 6mm possesses certain difficulties in terms of chips disposal, BUE, tool wear, and tool breakage. The study focuses on internal threading whirling. A new method of applying cutting fluid jet has been tested. The experiments have been done by using the Swiss-type lathe, Star SR-20R.

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Marabuto, S. R., D. Afonso, J. A. F. Ferreira, F. Q. Melo, Miguel A. B. E. Martins, and R. J. Alves de Sousa. "Finding the Best Machine for SPIF Operations - a Brief Discussion." Key Engineering Materials 473 (March 2011): 861–68. http://dx.doi.org/10.4028/www.scientific.net/kem.473.861.

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Single Point Incremental Forming (SPIF) given its easy implementation and absence of dedicated tooling is a promising manufacturing technology concerning the production of customized products, low batches or prototyping of ready-to-use parts. The range of application is wide, covering many materials and virtually unlimited geometries. Indeed, current process boundaries are more related to machine limitations than to the procedure itself. In this paper, research is carried out on the state-of-the-art of existing SPIF machine technology, in order to determine an appropriate configuration for an

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Pop, Alina Bianca, and Aurel Mihail Ţîţu. "Applied study on the rotational molding and processing technology of rotational molds." MATEC Web of Conferences 343 (2021): 04005. http://dx.doi.org/10.1051/matecconf/202134304005.

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Computer-aided manufacturing involves a set of computerized activities related to the preparation, launch and follow-up of manufacturing. Computer-aided manufacturing is a tool that allows the use of 3D models based on computer-aided design. This paper addresses the process of rotational formation, with an effective focus on the technology of processing a rotational mold using CAM simulation as a research method. In this sense, the right choice of CNC and cutting tools is essential. The use of numerically controlled machine tools and high-performance cutting tools reduces the number of operati

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Bao, Ze Fu, Ya Zhou Jiang, and Jiang Ping Wang. "NC Grinder Sliding-Table Component Design for Face Gear." Advanced Materials Research 429 (January 2012): 83–87. http://dx.doi.org/10.4028/www.scientific.net/amr.429.83.

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Face gear drive, a new type of gear , is meshed by a cylindrical gear and a bevel gear. It has many unique advantages. Especially in high-speed and heavy-load situation, it has obvious advantages and wide application in the aviation field of power transmission. But the surface gear's major object is low productivity, processing and complex machine tools, adjustment difficulties, high processing costs. Based on this, briefly discussed the status of face gear drive and needs further study, the author proposes a butterfly gear grinding wheel becomes the grinding face gear's theory and the process

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Nallusamy, S., K. Sujatha, K. Rajan, and K. R. Vijaya Kumar. "Analysis of Particle Damping Characteristics on Steel Vertical Machining Centre Column with Epoxy Reinforced Granite." International Journal of Engineering Research in Africa 50 (September 2020): 94–102. http://dx.doi.org/10.4028/www.scientific.net/jera.50.94.

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In high speed machining, performance is generally influenced by the dynamic behaviour of the machine tool structures. The machine tool structure is required to be rigid in order to remove the undesirable vibration and to improve the work piece quality. The most conventional material used in machine tool structure is cast iron which has both stiffness and dynamic characteristics to perform at varying speeds. The objective of this work is to improve damping capacity of vertical machining centre column. The damping capacity of column can be increased further by using passive damping method of bal

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Silva-de-Souza, Wellington, Arman Iranfar, Anderson Bráulio, et al. "Containergy—A Container-Based Energy and Performance Profiling Tool for Next Generation Workloads." Energies 13, no. 9 (2020): 2162. http://dx.doi.org/10.3390/en13092162.

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Run-time profiling of software applications is key to energy efficiency. Even the most optimized hardware combined to an optimally designed software may become inefficient if operated poorly. Moreover, the diversification of modern computing platforms and broadening of their run-time configuration space make the task of optimally operating software ever more complex. With the growing financial and environmental impact of data center operation and cloud-based applications, optimal software operation becomes increasingly more relevant to existing and next-generation workloads. In order to guide

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Grozav, Sorin Dumitru, Vasile Adrian Ceclan, Antoniu Turcu, and Ovidiu Vasile Oprea. "Kinematic Process Plastic Cold Orbital Forming." Applied Mechanics and Materials 808 (November 2015): 98–103. http://dx.doi.org/10.4028/www.scientific.net/amm.808.98.

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In the paper before you, the authors study the kinematics of the orbital deformation process on the base of the trajectory equation of the mobile element of the machine. Also, the authors show that the trajectory is a closed cycle curve with a finite number of lobes. Relations and charts are presented for the calculation of the number of lobes and their width depending on the machine setting. The upper mold half trajectory choice (active tool) to match the best part deformed kinematics requires detailed knowledge of orbital plastic deformation process, something which develops in the present p

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Yagishita, H. "Experimental Research on Circular Milling of Bi-Layer Composite Materials Consisting of CFRP Laminates and Titanium Alloys." Key Engineering Materials 622-623 (September 2014): 1207–14. http://dx.doi.org/10.4028/www.scientific.net/kem.622-623.1207.

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Recently, to construct an airframe 2-layer composite materials consisting of carbon fiber reinforced plastic (CFRP) laminates and TiAl6V4 still need to be machined, whereby drill holes are frequently machined. Special attention has to be paid to the machining quality, which implies hole dimensional accuracy, defect free peripheral zone, edge quality at inlet and outlet of hole and so on. Machining defects often occur as a consequence of excessive mechanical and thermal loads, which are often caused by wrong process conditions or by the wrong choice of machining process itself. With respect to

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Alter, David M., and Tsu-Chin Tsao. "Control of Linear Motors for Machine Tool Feed Drives: Experimental Investigation of Optimal Feedforward Tracking Control." Journal of Dynamic Systems, Measurement, and Control 120, no. 1 (1998): 137–42. http://dx.doi.org/10.1115/1.2801310.

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This paper investigates the use of optimal l1 and H∞ model reference optimal feedforward control to enhance the tracking performance of a linear motor drive. Experimental work is presented which studies the effects of signal preview, tracking constraint, and reference model choice on tracking performance. Suboptimal l1 control where the closed-loop system has a zero on the unit circle due to integral action in the feedback controller is given special attention, and is seen to give near optimal performance for the system under study here. For the specific trajectory employed here, the best perf

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Da Silveira Cavalcante, Luciana, and Shannon N. Tessier. "Zebrafish as a New Tool in Heart Preservation Research." Journal of Cardiovascular Development and Disease 8, no. 4 (2021): 39. http://dx.doi.org/10.3390/jcdd8040039.

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Heart transplantation became a reality at the end of the 1960s as a life-saving option for patients with end-stage heart failure. Static cold storage (SCS) at 4–6 °C has remained the standard for heart preservation for decades. However, SCS only allows for short-term storage that precludes optimal matching programs, requires emergency surgeries, and results in the unnecessary discard of organs. Among the alternatives seeking to extend ex vivo lifespan and mitigate the shortage of organs are sub-zero or machine perfusion modalities. Sub-zero approaches aim to prolong cold ischemia tolerance by

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Datta, Amit, Michael Carl Tschantz, and Anupam Datta. "Automated Experiments on Ad Privacy Settings." Proceedings on Privacy Enhancing Technologies 2015, no. 1 (2015): 92–112. http://dx.doi.org/10.1515/popets-2015-0007.

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Abstract To partly address people’s concerns over web tracking, Google has created the Ad Settings webpage to provide information about and some choice over the profiles Google creates on users. We present AdFisher, an automated tool that explores how user behaviors, Google’s ads, and Ad Settings interact. AdFisher can run browser-based experiments and analyze data using machine learning and significance tests. Our tool uses a rigorous experimental design and statistical analysis to ensure the statistical soundness of our results. We use AdFisher to find that the Ad Settings was opaque about s

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Bhushan, Shanti, Greg W. Burgreen, Wesley Brewer, and Ian D. Dettwiller. "Development and Validation of a Machine Learned Turbulence Model." Energies 14, no. 5 (2021): 1465. http://dx.doi.org/10.3390/en14051465.

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A stand-alone machine learned turbulence model is developed and applied for the solution of steady and unsteady boundary layer equations, and issues and constraints associated with the model are investigated. The results demonstrate that an accurately trained machine learned model can provide grid convergent, smooth solutions, work in extrapolation mode, and converge to a correct solution from ill-posed flow conditions. The accuracy of the machine learned response surface depends on the choice of flow variables, and training approach to minimize the overlap in the datasets. For the former, gro

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Martin, Remi. "The Freedom Machine." After Dinner Conversation 2, no. 6 (2021): 52–65. http://dx.doi.org/10.5840/adc20212654.

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If you could have a tool always whispering in your ear the best choices, would you use it? Is being the best version of yourself the point of life? In this work of philosophical short story fiction, Kiki has a problem, the computer program that continually whispers the best choices, the Infinity System, is broken. She has been using it for years and simply doing what it says. Following its advice has become second nature to her. She heads into the shop to get it looked at, and finds out it must be sent off for repairs. She will be making choices on her own for a few days. The friendly “Masterm

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Zhang, Kun Peng, Cheng Yong Wang, Y. N. Hu, and Y. X. Song. "Experiment on Optimal Selecting for Cutting Tools in Milling of High Hardened Steel." Materials Science Forum 723 (June 2012): 305–10. http://dx.doi.org/10.4028/www.scientific.net/msf.723.305.

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In this paper, with milling characteristics of high hardness hardened steel, we choice six different coated tools to made cutting experiments on high hardness hardened steel Cr12MoV (HRC65). In this stage, through the analysis of cutting force, cutting temperature, cutting vibration, machined quality and tool wear, we have elected the preferred tool and tool geometry parameters for this processing stage. The results of the study show that: TiAlSiN is the most suitable for Cr12MoV (HRC65), which helps to improve cutting processing productivity, prolong tool life, and enhance processing quality

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Zhao, Jinfu, Zhanqiang Liu, Qi Shen, Bing Wang, and Qingqing Wang. "Investigation of Cutting Temperature during Turning Inconel 718 with (Ti,Al)N PVD Coated Cemented Carbide Tools." Materials 11, no. 8 (2018): 1281. http://dx.doi.org/10.3390/ma11081281.

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Physical Vapor Deposition (PVD) Ti1−xAlxN coated cemented carbide tools are commonly used to cut difficult-to-machine super alloy of Inconel 718. The Al concentration x of Ti1−xAlxN coating can affect the coating microstructure, mechanical and thermo-physical properties of Ti1−xAlxN coating, which affects the cutting temperature in the machining process. Cutting temperature has great influence on the tool life and the machined surface quality. In this study, the influences of PVD (Ti,Al)N coated cemented carbide tools on the cutting temperature were analyzed. Firstly, the microstructures of PV

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Rooker, Tim, Graeme Potts, Keith Worden, Nikolaos Dervilis, and Jon Stammers. "Comparing approaches for multi-axis kinematic positioning in machine tools." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 235, no. 10 (2021): 1698–711. http://dx.doi.org/10.1177/09544054211019668.

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Maintaining minimal levels of geometric error in the finished workpiece is of increasing importance in the modern production environment; there is considerable research on the identification, verification and calibration of machine tool kinematic error, and the development of Postprocessor implementations to generate NC-code optimised for machining accuracy. The choice of multi-axis positioning function at the controller, however, is an often-overlooked potential source of kinematic error which can be responsible for costly mistakes in the production environment. This paper presents an investi

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Lee, Jeng Nan, Chih Wen Luo, and Hung Shyong Chen. "Interference-Free Multi-Axis NC Machining of Cylindrical Cam Using Enveloping Element." Key Engineering Materials 419-420 (October 2009): 333–36. http://dx.doi.org/10.4028/www.scientific.net/kem.419-420.333.

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To obtain the flexibility of choice of cutting tool and to compensate the wear of the cutting tool, this paper presents an interference-free toolpath generating method for multi-axis machining of a cylindrical cam. The notion of the proposed method is that the cutting tool is confined within the meshing element and the motion of the cutting tool follows the meshing element so that collision problem can be avoided. Based on the envelope theory, homogeneous coordinate transformation and differential geometry, the cutter location for multi-axis NC machining using cylindrical-end mill is derived a

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Beekhuis, Björn. "Influence of Solid Contaminants in Metal Working Fluids on the Grinding Process." Advanced Materials Research 769 (September 2013): 61–68. http://dx.doi.org/10.4028/www.scientific.net/amr.769.61.

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Metal working fluids (MWF) are widely used in grinding processes to lubricate and to remove the heat and chips from the contact zone. Apart from the chips, abrasive particles from the worn grinding wheel contaminate the metalworking fluid. The solid contaminants, in particular the abrasive particles crumbled from the grinding wheel, are believed to cause several negative effects like for example damaging the guideways of the machine tool. Furthermore, it is assumed that a pronounced interaction of the solid particles and the machined surface will decrease the achievable surface quality of the

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Poulhaon, Fabien, Matthieu Rauch, Adrien Leygue, Jean Yves Hascoet, and Francisco Chinesta. "Toward a Real Time Control of Toolpath in Milling Processes." Key Engineering Materials 554-557 (June 2013): 706–13. http://dx.doi.org/10.4028/www.scientific.net/kem.554-557.706.

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Real-time control of manufacturing processes is a challenging issue for nowadays industry. The need for ever more efficient production requires new strategies in order to make correct decisions in an acceptable time. In a large number of cases, operators working on a CNC machine tool have a reduced number of possibilities for interacting in real-time with the machine. Numerical simulation based control is in that sense an appealing alternative to the conventional approach since it provides the operator with an additional source of information, confirming his choices or in reverse suggesting a

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Ramm, Anita, Riccardo Superbo, Dimitar Shterionov, Tony O’Dowd, and Alexander Fraser. "Integration of a Multilingual Preordering Component into a Commercial SMT Platform." Prague Bulletin of Mathematical Linguistics 108, no. 1 (2017): 61–72. http://dx.doi.org/10.1515/pralin-2017-0009.

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AbstractWe present a multilingual preordering component tailored for a commercial Statistical Machine translation platform. In commercial settings, issues such as processing speed as well as the ability to adapt models to the customers’ needs play a significant role and have a big impact on the choice of approaches that are added to the custom pipeline to deal with specific problems such as long-range reorderings.We developed a fast and customisable preordering component, also available as an open-source tool, which comes along with a generic implementation that is restricted neither to the tr

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