Boring Cycle, Reverse Countersinking (G87) - Siemens Sinumerik 840D sl Programming Manual

Example
M3 S150
G90 G0 Z100
G90 G99 G86 X200. Y-150. Z-100.
R50. F150.
Y-500.
Y-700.
X950.
Y-500.
G98 Y-700.
G80
G28 G91 X0 Y0 Z0
M5
4.1.9

Boring cycle, reverse countersinking (G87)

This cycle can be used for precision drilling.
Format
G87 X... Y... R... Q... P... F... K... ;
X,Y: Drilled hole position
Z: Distance from bottom of the hole to point Z
R: Distance from the initial plane to plane R (bottom of a hole)
Q: Tool offset amount
P: Dwell time
F: Feedrate
K: Number of repetitions
ISO Milling
Programming Manual, 06/09, 6FC5398-7BP10-1BA0
;Rotary motion of stem
;Positioning, drilled hole 1,
;then return to point R
;Positioning, drilled hole 2,
;then return to point R
;Positioning, drilled hole 3,
;then return to point R
;Positioning, drilled hole 4,
;then return to point R
;Positioning, drilled hole 5,
;then return to point R
;Positioning, drilled hole 6,
;then return to initial plane
;Deselection of the fixed cycle
;Return to reference position
;Spindle stop
Additional functions
4.1 Program supporting functions
93