The formulas for calculating equation of saw cutting speed and kinematic equation of saw cutting and cutting area are derived through theoretical derivation in detail.

After analyzing the feed rate in numerical-controlled machining,this paper introduces the working principles and advantages of the toolpath optimization model of the software,and presents the actual process of optimizing toolpath in VERICUT.

According to the characteistics of cold ring rolling and the working theory of cold ring rolling mill,four kinds of feed rate design were offered.

Feed rate optimization for the rough machining means that it takes maximum machining efficiency as object function, it takes maximum main power and so on as limitation, feed rate in different stages are automatically adjusted according to optimization parameters designed by customers to keep maximum main power in a constant state, which makes material removal rate maximum.

Feedrate is one of the most important indexes in the CNC system, and the transition velocity of the linking lines or arcs influence the feedrate heavily.

The angular interpolation generates the reference commands along the given position curve and orientation curve based on specified angular feedrate.

The behaviors of grinding point's instantaneous feedrate, contact status and metal removal rate (grinding load) during cam NC polar grinding process are deeply analyzed.