Experiments on WEDM machining of magnesium alloy(AZ31B) were conducted, and the results showed that magnesium alloy's surface roughness was closely related to the speed of molybdenum wire and the electrical parameter, namely it increased when the speed is increasing.

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.

According to the operating principle and actual work condition of D56G90 cold ring rolling mill,two major factors,feed speed and width-radius ratio,that affected the width spread in cold rolling rectangle cross-section ring were selected to design width-spread experiment.

By adjusting the feed speed with the cutting pow er and roughness as constraint.

They are distributions of machining rate, quantity and density of lubricant, temperature of material, feed speed, reasonable arrangement of program.

The effect of feeding speed on wear of CBN wheel has been studied by experiments.

This paper expounds the conditions and features of plastic deformation of the rediairolling ring, anaiyses the instantaneous maximum of the screwdown and derives the calculatingformulas for the rolling time and the feeding speed.

According to the axisymmetric aspheric machining error feature, this paper analyses the parameters which influence the machining accuracy of workpiece, such as grinding linear velocity and feed velocity of grinding wheel in axisymmetric aspheric machining.

On the base of reliable optimization technology,we have analyzed and calculated the optimization condition of the single process of mechanical machining system,established the optimization mathematics model,further selected the optimization method,and at last found the calculation method of the best feed velocity and cut velocity.

The experiment system of diamond wire saw was constructed,the original parameters of cutting were set,the relation between feed velocity and area and width of cutting at different section of the pipe was analysed.