INTRODUCTION: Because the centreless grinder has the characteristics of high productivity and elimination of positioning errors, it has been commonly used in the field of machining. However, the centreless grinding machine often has prismatic error in the workpiece ground out, if the outer circle of the workpiece ground out by the centreless grinding machine is trigonal shape

The manufacturing error of the machine tool covers various aspects such as spindle rotation error, guideway error and transmission chain error. Spindle rotary error, that is, the spindle in the actual rotary process, its axis and the average axis of the deviation between, which is directly related to the accuracy of the workpiece processing.

About the last article on the wire cutting knowledge is not much, I went back to make up for the EDM wire cutting processing, summed up some of the basics to bring you. Processing objects: ordinary metals, high hardness alloy materials, artificial diamond, semiconductor materials, conductive ceramics, ferrite materials, etc..

Precision steel tube parts machining process innovation research, steel tube, cold drawing, tooling, billet, processing technology