Tormach PCNC 770 - Page 47

Chapter 5
47
UM10350_PCNC770_Manual_0916A
Intro to PathPilot
2. Type 0 in the tool DRO and press the M6
G43 buon to tell the PathPilot operang
system that we are changing tools and
applying a tool length oset. Tool zero
represents an empty spindle, and there
is no oset to apply. We press the M6
G43 buon to make sure there is no tool
length oset applied before we set the
work oset (see Figure 5.5).
3. Place a piece of scrap 2” x 4” in vise. Make
sure that the top of 2” x 4” is at least 1/4”
above the top of the vise jaws.
4. Place a piece of paper on the 2” x 4” and
jog the spindle down carefully unl the
spindle nose just makes contact with the
top of the 2” x 4”. You will be able to feel
when the paper is pinched (see Figure 5.6).
5. Press the Zero Z buon 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 workpeice.
4. Click the Zero X buon next to the X DRO.
5. Click the Zero Y buon next to the Y DRO.
Figure 5.6
Figure 5.5