Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 591)

Cylindrical Grinding Fixed Cycles
Chapter 17
17-17
Figure 17.4
G83 Incremental Plunge Grinding Motions
Part
X
I
Reciprocation
Z
START
K
Q
Spark--out passes
12054-I
Programming a G83 causes the control to execute a plunge grinding cycle.
This cycle is typically used to grind the diameter of a part. Axis 1, the Z
axis in our case, is the reciprocation axis and axis 2, the X axis, is the
plunge axis. The G83.1 cycle is identical but begins with a pre-dress
operation prior to the grind.
For example, if the G18 (ZX) plane is active and configured such that the
Z axis is axis one and the X axis is axis two, then the X axis would be the
plunge axis and the Z axis would be the reciprocating axis. The cycle
executes as follows:
1. The Z axis moves to the primary reversal point (Z) at feedrate E.
2. The plunge pick move (I) begins at feedrate F as the Z axis
decelerates to the primary reversal point.
Important: It is the programmer’s responsibility to make sure that the
reciprocation moves extend beyond the part sufficiently such that the
plunge move can be completed before the wheel comes back in contact
with the part. Plunge moves begin as the reciprocation axis decelerates.
Therefore, feedrate, acceleration and deceleration should be considered for
all axes involved.
3. The Z axis moves to the secondary reversal point (K).
4. The plunge pick move (Q) begins as the Z axis decelerates to the
secondary reversal point.