Results 231 to 240 of about 6,815,752 (285)

Layout errors of machine tools

International Journal of Machine Tools and Manufacture, 1997
Layout errors are caused by the necessity in a number of cases to simplify machine kinematics or the form of the cutting tool, or to apply an approximate setup of the machine tool, even though this results in systematic deviations of the machined surface form from the nominal form.
V.T. Portman, V.G. Shuster
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Machine Tool Thermal Error Reduction—an Appraisal

Proceedings of the I MECH E Part B Journal of Engineering Manufacture, 1999
It has been shown that machine tool thermal distortion can account for 75 per cent of the total machining error. As a result there has been a great deal of interest in techniques for reducing thermal errors. The approaches taken to thermal error reduction can be divided into two broad categories of reducing structural temperature change and reducing ...
S R Postlethwaite, J P Allen, D G Ford
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Influence of lateral dynamic error on the trajectory error in machine tools

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2023
In machine tools, the trajectory error of the tool center point (TCP) is caused due to the dynamic positioning error of feed drive systems according to the relationship in spatial structure and motion. The dynamic positioning error of the feed drive system includes axial dynamic error and lateral dynamic error.
Chensheng Wang, Yonghao Guo, Hongda Liu, Wentie Niu   +3 more
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Error Modeling in a Reconfigurable Machine Tool

Volume 7: 29th Mechanisms and Robotics Conference, Parts A and B, 2005
This paper proposes a new approach for tool tip error estimation for reconfigurable machine tools by linearly adding the module errors represented by a screw in global coordinate. The presented method is ideal for modular structured reconfigurable machine tools since the errors are represented in modules’ coordinate system in coordinate independent ...
Deepak Giri, Yong-Mo Moon
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Tool path error prediction of a five-axis machine tool with geometric errors

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2002
Predicting the actual tool path of a machine tool prior to machining a part provides useful data in order to ensure or improve the dimensional accuracy of the part. The actual tool path can be estimated by accounting for the effect of the machine tool geometric error parameters. In computer aided design/computer aided manufacture (CAD/CAM) systems, the
Y A Mir, J R R Mayer, C Fortin
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Reduction of machining errors of a three-axis machine tool by on-machine measurement and error compensation system

Journal of Materials Processing Technology, 2004
Abstract This paper suggests a method to reduce the machining errors of a three-axis machine tool by implementing an on-machine measurement with a touch probe. Probing errors of a touch probe and positioning errors of a machine tool, inevitably included in the measurement data, are compensated for to obtain the true machining errors for the repeated ...
J.P. Choi, B.K. Min, S.J. Lee
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Measurement, modeling and compensation of thermal error for machine tools

2015 IEEE International Conference on Advanced Intelligent Mechatronics (AIM), 2015
Thermal error accounts for a large proportion in the error sources of the machine tool. In this paper, the thermal error of a boring and milling machine tool is modeled with the output error model of timing analysis. In order to improve the prediction accuracy, Firefly algorithm is used to optimize the number of groups and the orders of output error ...
Haitong Wang, Fengchun Li, Tiemin Li, Liping Wang 0001   +3 more
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Error compensation in machine tools: a neural network approach

Journal of Intelligent Manufacturing, 1994
For a non-idealized machine tool, each point in the workspace is associated with a tool point positioning error vector. If this error map can be determined, then it is possible to substantially improve the positioning performance of the machine by introducing suitable compensation into the control loop.
John C. Ziegert, Prashant Kalle
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