Influence of discharge gap on machining quality for EDM;

Analysis on Machining Quality and Selection of Technical Parameters for High-speed EDM;

Its machining quality directly impacted on die using performance.

This article analyses in detail the process quality including three factors of surface roughness,process precision and deformation degree in WEDM,and analyses in detail the effect factors of the process quality.

Discuss how to guarantee the process quality.

To accurately predict the process quality information interfered by noise,the method of Wavelet Diagnosis Recursive Partial Least Square(WDRPLS) based on wavelet diagnosis and recursive Partial Least Square(PLS) was proposed.

This paper expatiates the influences brought about by functions to improve mold's processing quality such as precontrol of advanced plugging compressing and numerical driving technologies with SIEMES840D numerical control system SOTT/BRISK and JERK restriction of acceleration forward looking locus control and 840D high-speed fixing circulation and etc.

For the sake of raising processing quality of numerically controlled lathe ,it is necessary to make rational selection of technology and to master the three operating skills of numerially controlled lathe:useing more points of a knife,compensating radius of tool and tool's tear.

Tests in laboratory and industry have shown that ball_milling with variable rotational speed can raise the efficiency of ball_milling by a big margin and improve the processing quality of the powders.

At the same time, we studied the material working quality in different arrangement of blades by experiment.