Abstract:
The following questions are discussed：feature
cluster, feature cluster concept and the reasoning formula. The
defect based on approach direction and feed direction are
analyzed. Feature tool axis direction concept and its definition
method are submitted. The feature for practical part is also
clustered by tool axis direction.
Key words:
Feature Clustering of feature Tool axis direction
* This project is supported by
National Natural Science Foundation of China (No.59875006). Received
February 18, 2001; received in revised form April 9, 2001; accepted
October 12, 2001
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