Back Boring Cycle(G87) - Adtech ADTECH9 Series Programming Manual

2.4.10. Back boring cycle (G87)
This cycle performs precision boring
Format:
Format G76 X_ Y_ Z_ R_ Q_ F_
X_ Y_
Z_
R_
Q_
P_
F_
K_
Details:
Spindle orientation stops
Offset q
(Note: The offset of Q at the bottom of hole is the modal value stored in the fixed cycle. It must be specified
carefully, because this value can also be used as the cutting depth of the G73 and G83 commands. In addition,
since this command requires the spindle to position the borehole, so only the servo spindle can execute this
command).
The sequence of actions can be as follows:
1. Perform G00 command to quickly locate to the positions of X and Y coordinates
2. Perform spindle positioning (Note: Perform servo spindle zeroing--by setting the spindle parameter [No. 15
spindle return-to-zero offset (Angle)] so that the boring tool tip is parallel to the X-axis negative direction)
3. The tool moves Q_in the opposite direction of the tool tip using X-axis (note: this offset Q_ is a relative
movement amount)
ADTECH9 Series CNC Programming Manual
Hole position
Note: Here Z is from the hole bottom to the Point Z
Note: Here R is the position of hole bottom
Offset of tool in X direction
Dwell time at the bottom of hole
Cutting feed rate
Repeat times (if necessary)
Tool
Spindle CW
Spindle CW
Not required
Point Z
Point R