Journal of the Korean Society for Precision Engineering (한국정밀공학회지)
- Volume 15 Issue 6
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- Pages.33-39
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- 1998
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- 1225-9071(pISSN)
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- 2287-8769(eISSN)
Economic Design of Tool Resetting Period in NC Machining
NC 선반가공에서 공구 조정주기의 경제적 설계
Abstract
This paper is related to economic design of tool-resetting period in NC machining. In NC lathe machining, the mean and variance of components dimension fluctuate in slow time and we should reset tool program to compensate the variation from the fluctuation. In this paper. we propose the procedure determining the optimal resetting period based on the total expected operating cost which consists of resetting cost and the quality cost related to dimension variation. As a case study, using experimental data about dimension changes of a lathe machining, we obtain the regression equations of mean and variance of the dimension fluctuation, total expected operating cost, and optimal resetting period.
Keywords