9.3.2 High Speed Peck Drill (G73)
The G73 cycle is intended for deep drilling with chip breaking.
The retracts in this cycle break the chip but do not totally
retract the drill from the hole. It's suitable for tools with long
flutes which clear the broken chips from the hole.
Program: G73 X~ Z~ R~ L~ Q~
l Q~ is the delta increment along the Z-axis
The G73 cycle is as follows:
Step 1: Preliminary canned cycle motion.
Step 2: Move the Z-axis only at the current feed
rate downward by delta or to the Z position
(whichever is less deep).
Step 3: Rapid back incrementally in Z 0.010 in.
Step 4: Repeat Step 1 through 3 until the Z
position is reached at Step 1.
Step 5: Rapid back down to the current hole
bottom, backed off a bit.
Step 6: Retract the Z-axis at traverse rate to clear
Z.
Troubleshooting
It's an error if:
l The Q number is negative or zero
l The R number is not specified
9.3.3 Cancel Canned Cycles (G80)
To cancels all canned cycles, program: G80
It's okay to program G80 if no canned cycles are in effect.
After a G80, the motion mode must be set with G00 (or any
other motion mode G word). If motion mode is not set after
G80, this error message appears: "Cannot use axis values
without a g code that uses them."
9.3.4 Drilling Cycle (G81)
The G81 cycle is intended for drilling.
Program: G81 X~ Y~ Z~ A~ R~ L~
The G81 Cycle is as follows:
Step 1: Preliminary canned cycle motion.
Step 2: Move the Z-axis only at the current feed
rate to the Z position.
Step 3: Retract the Z-axis at traverse rate to clear
Z.
Examples
These examples demonstrate how the G81 canned cycle works
in detail. Other canned cycles work in a similar manner.
E X A M P L E
The current position is (1, 2, 3), the XY-plane has been
selected, and the following line of code is interpreted:
G90 G81 G98 X4 Y5 Z1.5 R2.8
This means that it's in absolute distance mode (G90),
old Z retract mode (G98) and the G81 drilling cycle is
performed once. The X number and X position are 4. The
Y number and Y position are 5. The Z number and Z
position are 1.5. The R number and clear Z are 2.8. The
following moves take place:
1. G00 motion parallel to the XY-plane to (4,5,3)
2. G00 motion parallel to the Z-axis to (4,5,2.8)
3. G01 motion parallel to the Z-axis to (4,5,1.5)
4. G00 motion parallel to the Z-axis to (4,5,3)
©Tormach® 2024
Specifications subject to change without notice.
Page 190 UM10811: 1500MX Operator's Manual (Version 0424A)
For the most recent version, see tormach.com/support
9: PROGRAMMING
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