Tormach PCNC 440 - Touch Off the Workpiece to Set Tool Length Offsets

Chapter 5
47
UM10372_PCNC440_Manual_0221A
iNTRO TO PATHPilOT
5. Click the Zero Z buon next to the Z DRO to set the work oset Z to zero.
NOTE: This is just like typing 0.0 into the Z DRO and pressing Enter. To account for the thickness of the
paper used in touching o the work oset, you could type 0.003 in the Z DRO and press Enter.
Seng the X and Y Work Osets
Common posions for the X and Y part zeros are:
• The back le of the workpiece
• The center of the workpiece
• A feature (i.e., a hole or a boss) that already exists on the workpiece
For the rst part tutorial, we will use the X/Y center of the workpiece as the zero point. To set the X
and Y work osets for this part:
1. Using a straight edge, draw two lines on the 2” x 4” from corner to corner, creang an X in the
center of the workpiece.
2. Put the tool holder with the 3/8” end mill in it into the spindle.
3. Jog the mill so that the 3/8” end mill is approximately centered over the X on the workpiece.
4. Click the Zero X buon next to the X DRO.
5. Click the Zero Y buon next to the Y DRO.
5.1.7 Touch Off the Workpiece to Set Tool Length Offsets
This secon assumes that you have already set the work oset Z zero to the top surface of the
part using the steps in Seng Work Oset by Touching o Workpiece. The steps below describe
an alternave to using the TTS height gauge. If you have the 8” Digital Height Gauge (PN 31761), it
may be easier to measure the tools oine and enter their lengths directly into the tool table on the
Osets tab.
To touch o the tool osets:
1. The 3/8” tool used to set X and Y work
osets earlier in this chapter should
sll be in the spindle; this is Tool 1.
Type 1 in the tool DRO and click the
M6 G43 buon to tell the mill that
you have changed tools and want to
apply the tool length oset.
2. Jog the mill down so that the tool
just touches the top of the 2” x 4”
(see Figure 5.7).
Figure 5.7