Reference posrtion #3 150 s 1 to 6 Drilling of a 10r 7 to 10 Drilling of a 20mm diameter 11 to 13 Boring of a 95mm diameter hole(depth 50 mm) 250 Initial level X T3 Fig 4-11: tool path programming sample Fig 4-1l is a program example using tool length offset and canned cycles. Offset value +2000 is set on offset no 11+1900 is set in offset no. 15. and +150.0 is set in offset no 31 NOO1 G92XOY0Z0 Coordinate setting at reference position NO02G90G00Z250.0T1lM6 Tool change No03 G43Z0Hll Initial level tool length offset No04 S30M3 Spindle start No5G99G81X4000RY-350.0 Z-1530R-97.0F120 Positioning, then #l drilling N06Y-550.0 Positioning, then #2 drilling and point r level return NO07G98Y-750.0 Positioning, then #3 drilling and initial level return No08G99X1200.0 Positioning, then #4 drilling and point R level return No09Y-550.0 Positioning, then #5 drilling and point R level return NO10G98Y350.0 Positioning, then #6 drilling and initial level return NOll GO0XOYOM5 Reference, then #6 drilling and initial level return Nol2G49Z250.0T15M6 Tool length offset cancel, tool change No13 G43Z0H15 Initial level. tool length offset NO014S20M3; Spindle start Nol5G99G82X550.0￥-450.0Fig 4-11: tool path programming sample 3 Fig 4-11 is a program example using tool length offset and cannesd cycles. Offset value +200.0 is set on offset No.11 +190.0 is set in offset No.15, and +150.0 is set in offset No.31. ; N001 G92X0Y0Z0; Coordinate setting at reference position N002 G90G00Z250.0T11M6; Tool change N003 G43Z0H11; Initial level, tool length offset N004 S30M3 Spindle start N005 G99G81X400.0RY-350.0 Z-153.0R-97.0F120 Positioning, then #1 drilling N006 Y-550.0 Positioning, then #2 drilling and point R level return N007 G98Y-750.0; Positioning, then #3 drilling and initial level return N008 G99X1200.0 Positioning, then #4 drilling and point R level return N009 Y-550.0; Positioning, then #5 drilling and point R level return N010 G98Y-350.0 Positioning, then #6 drilling and initial level return N011 G00X0Y0M5; Reference, then #6 drilling and initial level return N012 G49Z250.0T15M6; Tool length offset cancel, tool change N013 G43Z0H15; Initial level, tool length offset N014 S20M3; Spindle start N015 G99G82X550.0Y-450.0