Fanuc G76 fine boring cycle program example

                In this cycle bore a hole precisely. When tool is reach at bottom of hole , the spindle is stop  and tool is shift from machining position and retract .Tool offset in canned cycle mode is ignored.

G76 X_ Y_ Z_ R_ Q_ P_ F_ K_
                    Where , XY- Position of hole
                                  Z-  Depth of operation performe
                                  R-  R plane position.
                                  Q- Shift amount when  tool reach at bottom
                                  P- Dwell time when tool reach at bottom
                                  F- cutting feed rate 
                                  K- no of times operation repeats.

N10   M06 T05 ;
N20   G90 G80 G17 G00 G54 X0 Y0 ;
N30   G43 Z100 H4 ;
N40   M03 S1500 ;
N50   M07 ;
N60   G99 G74 X0 Y0 Z-35 R5 Q3 P1000 F2.5 ;                      
N70   G98 G80 G00 Z100 ;
N80   M05 M09 M30 ;

On above fig. we have to bore 30 mm bore for this we used 30 mm boring bar .

N10- Tool change command , select tool no. 5
N20- Absolute co-ordinate command , cancel canned cycle command , selection of  XY plane, rapid command, work coordinate for tool positioning at  X0 and Y0.
N30- Tool height offset compensation command , where tool is 100 along Z axis , tool hight code H4.
N40- Spindle on clockwise , speed is 1500 rpm .
N50- Coolant ON .
N60- Return to R-plane in canned cycle , fine boring command , Depth of boring is 45 , R- plane distance is 5 , shift amountof tool at bottom of hole, dwell time ,   feed rate per minute is 2.5 
N70- Tool return initial position , cancel canned cycle , rapid command , where tool along Z axis is 100 .
N80- Spindle off , coolant off, Main program end . 
Fanuc G76 fine boring cycle program example Fanuc G76 fine boring cycle program  example Reviewed by harshal on August 18, 2018 Rating: 5
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