공작기계 직선 베어링 안내면의 정도 설계에 관한 연구The Accuracy Design of LM Guide System in Machine Tools

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This paper is concerned with Accuracy Design of LM Guide System in Machine Tools. Elastic deformation of bearing is calculated by Hertz contact theory and motion error of LM block is analyzed. A new algorithm using block stiffness is proposed fur the analysis of motion accuracy of the table. The best advantage of this algorithm is fast analysis speed because it isn't necessary iteration processes for satisfying equilibrium equation of the table. Motion errors of the table analyzed under artificial form error of rail theoretically and experimentally. Only one of two rails is bent by putting a thickness gauge into horizontal direction. This form error of rail is measured by gap sensor against the other rail. Then, motion errors of the table are predicted by proposed new algorithm theoretically and measured by laser interferometer. Measurements are carried out by changing the preload and thickness. The results show that the table motion errors are reduced from 1/2 to 1/60 times than form error of rail according to its height and width. And the effect of preloading is almost negligible.
Publisher
한국정밀공학회 춘계학술대회
Issue Date
2000
Language
KOR
Citation

한국정밀공학회 2000년 춘계학술대회 , pp.692 - 695

URI
http://hdl.handle.net/10203/137547
Appears in Collection
ME-Conference Papers(학술회의논문)
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