Abstract

A new machining strategy, called cutting-path/adaptive-feedrate strategy, is proposed to improve the productivity of sculptured-surface productions subjected to force and dimensional constraints. In this proposed strategy, a new machining-planning aid, called maximum feedrate map, is developed. In this map, the maximum allowable feedrates at each control point along all machining directions subjected to the specified constraints are determined using a surface generation model. These local maximum-feedrate boundaries indicate the acceptable range of feedrates that a part programmer can use in the NC programming. In addition, the maximum feedrate map also provides the part programmer an important aid in selecting the cutting directions. The proposed strategy was applied to the machining planning for turbine blade die productions. Both computer simulation and experimental study were performed.

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