This standard specifies the requirements and inspection methods for the geometric accuracy and working accuracy of vertical single-axis tongue and groove machines. This standard applies to vertical single-axis tongue and groove machines.
JB/T 3290.2-1999 history
2014JB/T 3290.2-2014 Vertical single spindle mortising machines for woodworking.Part 2: Accuracy
1999JB/T 3290.2-1999 Vertical single shaft mortising machine Precision