GB/T 31396.1-2015 Machine tools.Dimensions and geometric tests for self-centring chucks with two-piece jaws.Part 1:Manually operated chucks with tongue and groove type jaws
This part of GB/T 31396 specifies the interchangeable dimension and geometric accuracy inspection and corresponding tolerances of self-centering manual chucks with separating jaws (key and groove fit type).
GB/T 31396.1-2015 Referenced Document
GB/T 17421.1-1998 Test code for machine tools. Part 1: Geometric accuracy of machines operating under no-load or finishing conditions
GB/T 31396.1-2015 history
2015GB/T 31396.1-2015 Machine tools.Dimensions and geometric tests for self-centring chucks with two-piece jaws.Part 1:Manually operated chucks with tongue and groove type jaws