Based on JIS B 6191, this standard stipulates the methods for inspecting the static accuracy and machining accuracy of general-purpose knee-shape milling machines with normal accuracy, as well as the allowable values corresponding to each inspection item.
JIS B 6191:1999 Machine tools -- Geometric accuracy tests and practical tests -- Test methods
JIS B 6203-2:2007 history
2007JIS B 6203-2:2007 Test conditions for milling machines with table of variable height -- Testing of accuracy -- Part 2: Machines with vertical spindle
1998JIS B 6204:1998 Knee type vertical milling machines -- Testing of the accuracy
1986JIS B 6204:1986 Test code for performance and accuracy of knee type vertical milling machines