Results 261 to 270 of about 20,107 (303)

Machine tool thermal error reduction—an appraisal

Proceedings of the Institution of Mechanical Engineers, 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 ...
D G Ford
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Thermal error modeling of machine tool based on dimensional error of machined parts in automatic production line

ISA Transactions, 2023
Thermally induced error has proven to be the major source of machining error for the machine tool working in a non-temperature-controlled workshop. Current research on thermal error modeling and compensation is implemented based on the measured thermal deformation of machine tool, and the data is obtained referring to spindle idling rather than metal ...
Hu Shi, Xuesong Mei, Tao Tao
exaly   +3 more sources

Dynamic Modeling for Machine Tool Thermal Error Compensation

Journal of Manufacturing Science and Engineering, Transactions of the ASME, 2003
This paper proposes a new thermal error modeling methodology called the Dynamic Thermal Error Modeling which improves the accuracy and robustness of the machine tool thermal error model. The characteristics of the thermoelastic system are investigated from the dynamic system viewpoint.
Jun Ni
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Research on Thermal Error Modeling of CNC Machine Tool

Advanced Materials Research, 2010
Four key temperature points of a CNC machine tool were obtained in this paper, and a thermal error model based on the four key temperature points was proposed by using based back propagation neural network. A thermal error compensation system was developed based on the proposed model, and which has been applied to the CNC machine tool in daily ...
Qian Jian Guo, Jian Guo Yang
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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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Reduction and Compensation of Thermal Errors in Machine Tools

CIRP Annals, 1995
Abstract The main reasons for dimensional and geometric errors in workpieces produced on machine tools include low static stiffness of the machine structure, low dynamic performance of feed drives, tool wear and thermal deformations of the tool, machine and workpiece.
M. Weck, P. McKeown, R. Bonse, U. Herbst
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Study on the Thermal Errors of CNC Machine Tools

Advanced Materials Research, 2012
Thermal deformation is produced by heat sources in CNC machine tools. Thermal error is one of the main parts in CNC machining errors. The internal and external heat sources were introduced. The research status about thermal errors was analyzed, including identification of thermal sensitive points, precaution against thermal errors and error ...
Hong Qi Luo, Yue Hua Lai
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Thermal Error Modeling of a CNC Machine Tool

Applied Mechanics and Materials, 2013
The purpose of this research is to improve the machining accuracy of a CNC machine tool through thermal error modeling and compensation. In this paper, a thermal error model based on back propagation networks (BPN) is presented, and the compensation is fulfilled.
Chong Zhi Mao, Qian Jian Guo
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A Combined Error Model for Thermal Error Compensation of Machine Tools

Advanced Materials Research, 2013
In this paper, a combined error model for thermal error compensation of machine tools is presented. Through the analysis of thermal error data of machine spindle at different temperatures, the error variation law is obtained. Experiments on the axial directional spindle deformation on a CNC machine center are conducted to build and validate the ...
Wei Wang, Jian Guo Yang
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