This standard specifies the type and parameters, accuracy, requirements, test methods, inspection rules, marking and packaging of rotary tops. This standard applies to rotary centers for ordinary machine tools and CNC machine tools.
JB/T 3580-2011 Referenced Document
GB/T 1443-1996 Machine tools--Self-holding tapers for tool shanks
GB/T 17421.1-1998 Test code for machine tools. Part 1: Geometric accuracy of machines operating under no-load or finishing conditions