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Research into Head-body Thermal Bending for High-accuracy Thermal Error Compensation  

Kim, Tae-Weon (Daewoo Heavy Industries and Machinery Ltd.)
Hah, Jae-Yong (Daewoo Heavy Industries and Machinery Ltd.)
Ko, Tae-Jo (Dept.of Mechanical Engineering, Yeungnam University)
Publication Information
Journal of the Korean Society for Precision Engineering / v.19, no.1, 2002 , pp. 56-64 More about this Journal
Abstract
Machine tools are engineered to give high dimensional accuracy in machining operation. However, errors due to thermal effects degrade dimensional accuracy of machine tools considerably, and many machine tools are equipped with thermal error compensation function. In general, thermal errors can be generated in the angular directions as well as linear directions. Among them, thermal errors in the angular directions contribute a large amount of error components in the presence of offset distance as in the case of Abbe error. Because most of thermal error compensation function is based on a good correlation between temperature change and thermal deformation, angular thermal deformation is often to be the most difficult hurdle for enhancing compensation accuracy. In this regard, this paper investigates the effect of thermal bending to total thermal error and gives how to deal with thermally induced bending effects in thermal error compensation.
Keywords
Machine tool; Head body; Thermal error; Thermal bending; Thermal error compensation;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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