As we know,every CNC Machinery Parts products need to test and check before selling out.And they would be tested repeatly.Now we will say about the Current Workshop Unconventional Test for the CNC machining parts . 1: Detection of inner diameter When the workpiece can not be directly measured with the inside micrometer, the following methods can be referred to for inspection. For the workpiece with wall thickness less than 30, first measure the outer circle size of the workpiece, and then measure the wall thickness size with a sharp divider, that is, the inner hole size = the outer circle size -2* the wall thickness size. This method can be controlled within 0.005., Measure the size of the hole by means of the table. First measure the size of the workpiece's outer circle. Then measure the size of the outer circle and the wall thickness with the table.This method can also be controlled within 0.005. Check the hole size with the plug gauge of corre...