
13. FUNCTIONS TO SIMPLIFY
PROGRAMMING B–63522EN/02
NC FUNCTION
184
The continuous feed plane grinding cycle is possible by the following
command.
G78 I_ (J)_ K_ X_ R_ F_ P_ L_ ;
I : Cutting depth (Cutting direction is by command coding.)
J : Cutting depth (Cutting direction is by command coding.)
K : Total cutting depth
X : Grinding range (Grinding direction is by command coding.)
F : Feed rate
P : Dwell time
L : Grindstone wear compensation number (Note 1)
Note 1) L is specified when performing continuous dressing.
Note 2) X, I, J and K commands are all incremental commands.
I
I(J)
X
P(Dwell)
(F)
P(Dwell)
(F)
X
Z
The continuous feed plane grinding cycle is made up from the following
sequence of 4 operations.
The operations from up to are repeated until the grindstone cutting
depth reaches the total cutting depth specified by address K.
Dwell
Grinding
Dwell
Grinding (return direction)
In case of single block, the operation from to are performed by one
cycle start.
NOTE
When J is not commanded, it is regarded as J=1.
Further, the J command effective only at the specified block.
It does not remain as modal information. (Irrespective of ”J”
of G75, G77, and G79)
13.14.3
Continuous Feed Plane
Grinding Cycle (G78)
Format