This standard specifies the characteristics, dimensions and cutting tests of standard test pieces under precision machining conditions, and is used to evaluate the cutting accuracy of machine tools. This standard applies to precision machining centers with linear axis strokes up to 2000mm.
JB/T 8772.7-1998 history
1998JB/T 8772.7-1998 Test conditions of precision machining centres.Part 7:Accuracy of a finished test piece