A study on optimal structure design for multi-axis machine tools based on statistical deviation of shape generation motions

2017 Fiscal Year Final Research Report

• Project/Area Number: 26420055
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Production engineering/Processing studies
• Research Institution: Osaka Prefecture University
• Principal Investigator: SUGIMURA Nobuhiro 大阪府立大学, 人間社会システム科学研究科, 教授 (80135813)
• Co-Investigator(Kenkyū-buntansha): 岩村 幸治 大阪府立大学, 人間社会システム科学研究科, 教授 (40332001) ; 谷水 義隆 大阪府立大学, 工学(系)研究科(研究院), 教授 (60275279)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 工作機械 / パラレルリンクロボット / 運動偏差 / 幾何公差 / 公差設計

Outline of Final Research Achievements

The objective of the present research is to establish a computer-aided design system for specifying a suitable set of the geometric tolerances of the guide-ways considering the trade-off between the requirements on the kinematic motion deviations and the ease of the manufacturing processes. A mathematical model is proposed to represent the standard　deviations of the shape generation motions, based on the tolerance values of the guide-ways of the machining centers. A systematic method is proposed here, by applying an optimization method, to determine a suitable set of the tolerance values of the guide-ways under the constraints on the kinematic motion deviations. The method is applied to some design problems of the geometric tolerances of the guide-ways included in the five-axis machining centers. The same method is expanded and applied to the tolerance design for the parallel link robots used for the precise and small product assemblies.

Free Research Field

機械生産工学