Wuhan Huazhong Numerical Control Co., Ltd HNC-18iT v4.0 Programming Manual page 114

Function Function Function Function
G73 command can cut a wokpiece at a fixed pattern repeatedly.
The machining path is A→A'→B.
Note Note
Note Note
G00 or G01 must be used in the finishing program – between P(ns) and Q(nf).
1)
Otherwise, there is an alarm message.
G73 can not be used in MDI mode.
2)
G98 and G99 can not used in the finishing program – between P(ns) and Q(nf).
3)
The depth for each cutting on X axis = △I/r
4)
The depth for each cutting on Z axis = △K/r
The direction of △I and △K, and the direction of △x and △z should be noted.
5)
9. Functions to Simplify Programming
110