This standard specifies the types and dimensions of straight shank conical ball head mold milling cutters. This standard applies to straight shank conical ball head mold milling cutters with a diameter of 6 to 12 mm.
JB/T 7966.6-1999 history
1999JB/T 7966.6-1999 Die milling cutters Part 6: Conical ball end mills with straight shank