1. G Function Description
Description:
1. use G00 to move tool to specified (X, Y) point, when performance
start
2. use G00 reach the specified R point(not include spindle
positioning)
3. use G01 reach point Z at the bottom of the hole, dwell P(s) and
spindle positioning and stop the drill
4. shift Q distance
5. use G00 raise to initial point (G98) or programmable point R
(G99)
6. shift Q distance in reverse direction
7. drill start
※ alarm:
Q is a Modal Value that requests in G76 cycle, we must specify
this Q value carefully, because it also use in G73/G83.
OSS(Oriented Spindle Stop) direction is decided by parameter No.
4020:
Parameter
4020
0
OSS direction
+X
1
-X
2
+Y
3
-Y
Note:
1. before G76, use M Code let drill start to rotate CW.
2. if M Code and G76 are specified in the same block ,this M Code
only executes in the first time of positioning in that block
3. when K is used to specify numbers of times, this M Code is
executed for the first only, for the second hole and subsequent
holes, the M Code is not executed.
4. G76 is module G Code ,it is always effective when we use
once ,we only specify (X,Y) in next line of program ,controller
will execute drilling at (X,Y)
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