This part of JB/T 7422 specifies the parameters of the honing head for vertical internal honing machines. This section applies to newly designed honing heads for ordinary, semi-automatic and CNC vertical internal honing machines.
1991JB/T 5603-1991 Vertical internal honing machine series type spectrum
JB/T 7422.4-2013 Vertical internal cylindrical honing machines.Part 4: Honing tool parameters has been changed from JB/T 9896-1999 Honing head parameters.