Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 619)

Turning Operations
Chapter 18
18-3
ATTENTION: When programming the single pass cycle, the
first move to the grinding/dressing depth is a rapid move. Make
sure that the grinding wheel or dresser does not contact the part
on this initial move.
The single pass cycle uses the currently active programmed
grinding/dressing feedrate. You can specify a different grinding/dressing
feedrate in the single pass cycle block.
Use the rapid feedrate (for the axis in motion as assigned in AMP) for the
approach feedrate to the part and the return feedrate from the part to the
start point.
G20 Straight O.D. and I.D. Grinding/Dressing
The format for the G20 straight grinding/dressing cycle is:
G20X__ Z__;
Where : Is :
X__ the grinding/dressing depth for the X-axis. In incremental mode, specify the
amount of infeed. In absolute mode, specify the coordinate position at the
desired grinding/dressing depth. X can be programmed as either a diameter or
radius value.
Z__ the length of grind along the Z-axis. In incremental, specify the amount of feed
across the part. In absolute, specify the coordinate position of the end point of the
grinding pass.
After the control executes the G20 block, the control re-executes the cycle
for any following blocks that command axis motion (until you cancel the
cycle). The values of the axis words in the following block replace the
values of the parameters specified in the original G20 block and the cycle
is re-executed using these new values.
Example 18.1
Straight Grinding Cycle
G08G90G00X40.Z60.;
G20X28.Z25.F10.;
X24.;
X20.;