Programming Manual

LNC-MILLG81 Drilling CycleG81 Drilling CycleCommand FormatG81 X╴ Y╴ Z╴ R╴ K╴ F╴;Argument Instruction• X__Y__Coordinate of hole position (mm).• Z__Coordinate of hole bottom (mm).• R__Coordinate of R point (i.e. retraction point) (mm).• K__Times of iteration.• F__Feedrate (G94 mm/min) (G95 mm/rev).Action Instruction (taking G17 plane for example)1. Fast position to hole position (X, Y, yet maintain the original height of tool);2. Fast position to the coordinate of R point (R);3. Cut to the hole bottom position (Z) with specified cutting feedrate andspindle speed;4. In G98 mode, fast return to the starting point; In G99 mode, fast return to Rpoint;5. If K is specified ( > 1) , repeat steps 2~4 until reach specified drilling iterationtimes; otherwise procedure ends;6. In G91 mode, argument R specifies the distance between R point and thestarting point; argument Z specifies the distance between hole bottomposition and R point; if K is specified ( > 1), after each drilling process (steps2~5), the hole position will migrate according to specified X, Y and thencontinue next drilling process.84 LNC Technology Co., Ltd.