A Study on Tool Wear Process Control and Tool Quality Life
Volume 2, Number 2, April 2006 - Paper 5 - pp. 163 - 173
MIN ZHANG , ZHEN HE and YAN-FENG DONDepartment of Industrial Engineering,
Tianjin University, Tianjin, China 300072
(Received on July 3, 2005)
The factors that govern the tool wear vary with the time rather being constant. In this paper, a model for the residual tool wear process is developed using Glejser test for determining the variations in heteroskedasticity of the process. On the basis of this test, a control chart of the tool wear is developed and process capability indices are calculated. The tool quality life is determined once the minimum process capability indices are known. A method is also developed to determine the tool quality life of automatic machine tools by integrating tool cutting life and knowing the desired quality life.
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