An analysis of the volumetric error uncertainty of a three-axis machine tool by beta distribution
SCIE
SCOPUS
- Title
- An analysis of the volumetric error uncertainty of a three-axis machine tool by beta distribution
- Authors
- Ahn, KG; Cho, DW
- Date Issued
- 2000-12
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Abstract
- This paper addresses the stochastic nature of the volumetric error of a machine tool in 3-dimensional workspace, and proposes a new model helping the prediction of the tolerances of products caused by uncertainties of a machine tool without going through very costly and time-consuming production evaluation. The probability of the volumetric error within the prescribed tolerance in the case of a vertical type 3-axis machine tool is obtained in 3-dimensional graphical form and the beta distribution is adopted to obtain a distribution that can better approximate the real distribution of the sum of the variables. The direction of approach of a tool/workpiece is considered when the stochastic error parts of a machine tool are evaluated. In addition, we verified experimentally that the stochastic parts of the volumetric error are also affected by the direction of approach of a tool/workpiece. (C) 2000 Published by Elsevier Science Ltd.
- Keywords
- machine tool accuracy; volumetric error; random uncertainty; direction of approach; quality control; ACCURACY; METHODOLOGY; CENTERS; MODEL
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/19835
- DOI
- 10.1016/S0890-6955(00)00048-1
- ISSN
- 0890-6955
- Article Type
- Article
- Citation
- INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, vol. 40, no. 15, page. 2235 - 2248, 2000-12
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