
13. FUNCTIONS TO SIMPLIFY
PROGRAMMING
B–64112EN/01
NC FUNCTION
152
The intermittent feed plane grinding cycle is possible by the following
command.
G79 I_ J_ K_ X_ R_ F_ P_ L_ ;
I : The first cutting depth (Cutting direction is by command coding.)
J : The second cutting depth
(Cutting direction is by command coding.)
K : Total cutting depth
X : Grinding range (Grinding direction is by command coding.)
R : Feed rate of I and J
F : Feed rate of X
P : Dwell time
L : Grindstone wear compensation number (Note 1)
Note 1) L is specified when performing continuous dressing.
Note 2) I, J, K and X commands are all incremental commands.
I
J
X
(R)
P
(F)
P
X
Z
(F)
(R)
The intermittent feed plane grinding cycle is made up from the following
sequence of 6 operations.
The operations from up to are repeated until the grindstone cutting
depth reaches the total cutting depth specified by address K.
Grindstone cutting :
Cuts in Z axis direction by cutting feed only the amount specified by
the first cutting depth I. The feed rate becomes the rate specified by
R.
Dwell :
Performs dwell for only the time specified by P.
Grinding :
Shifts by cutting feed only the amount specified by X in the X axis
direction. The feed rate becomes the rate specified by F.
Grindstone cutting :
Cuts in Z axis direction by cutting feed only the amount specified by
the second cutting depth J. The feed rate becomes the rate specified
by R.
13.13.4
Intermittent Feed Plane
Grinding Cycle (G79)
Format