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Abstract: The measure mode of wear is proposed for ball-end milling cutter and tool wear model is built. Tool wear model coefficients are decided to use tool wear data measured by mapping mode in ball-end milling cutter. Various experimental works have been performed to verify the validity of the proposed tool wear model. It is shown that the proposed model is capable of accurate prediction tool wear of ball-end milling cutter. At the same time, the algorithm of off-line simulation error compensation is proposed for wear-induced error of ball-end milling cutter. The algorithm predicts the machining error for one tool move using the proposed tool wear model in the NC mill machining and acquires one tool move of over tolerance. The NC programs are modified prior to practical machining operations for one tool move of over tolerance. The error compensation experimental results verify the validity of the proposed algorithm of off-line simulation error compensation and show that the error compensation algorithm is satisfying.
Key words: Ball-end milling cutter Tool wears Machining simulation Error compensation
CLC No:
TP391
教育部高等学校优秀青年教师教学科研奖励计划资助项目(教人司[2002]123号).
Received
20070324,
received
in
revised
form
20071010
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