关键词: 织构拉刀, 负载建模, 矩形织构槽, 圆弧效应

Abstract: Aiming at the problems that traditional model of broaching load is not clearly and the modeling errors are quite big， the slots on the broach teeth were defined as surface texture grooves herein.A more detailed computational model of broaching load for texture broaches was provided with a consideration on texture groove parameters of cutter teeth， the circular holes of workpieces and tooth contacting cycle in broaching.First of all， based on the classical theory of cutting loads， a single tooth broaching load model for texture broaches was proposed.Then， the single tooth broaching load model was optimized with the influences of workpiece circular holes on the cutting areas.Finally， a universal computational model of broaching loads was obtained by adding tooth contacting cycle effects decided by workpiece lengths.The simulation and experimental results show that the proposed model may predict broaching load well.Moreover， it is proved that the texture groove may be used to reduce the broaching loads.And groove numbers aren't the more， the better.There is a optimal value for groove numbers.

Key words: texture broach, load modeling, rectangular groove, circle effect