Chapter 4
43
UM10350_PCNC770_Manual_0916A
Operation
To change a TTS tool holder, loosen the drawbar by one turn with a 13 mm wrench. Then, grasp the
tool holder in one hand and use a mallet to gently strike the top of the drawbar. Remove the tool
holder and repeat steps 5 and 6 (above) to install a new tool holder.
Tips on Using Tormach Tooling System (TTS)
• Never ghten the TTS collet without a tool holder inserted
• Never change tools while a tool holder is in the spindle as this may damage the spindle
alignment pin
• To minimize tool pull-out, periodically wipe tool holder shanks clean/dry with a degreasing agent
• When not in use, apply a protecve spray (WD-40
®
or similar) to prevent surface rust on bare
metal surfaces of tool holders
• The drawbar and TTS collet are wear items. Inspect threads and mang surfaces regularly and
replace if damage or wear is apparent as it reduces the ability to ghten tools properly
R8 collets and R8 taper tool holders are also compable. These are installed in a similar manner to
the TTS collet as described above, but must be removed completely during each tool change.
NOTE: The PCNC 1100 ships with a drawbar with 7/16”-20 UNF thread.
4.6 Part Setup/Workholding
Work must be secured to the table prior to machining. Each PCNC mill has three 5/8” T-slots that run
parallel to the X-axis. The slots are precision ground to:
Center Slot Outer Slots
-0.00 + 0.004” 0.000 + 0.008”
A 5” vise is recommended. Tormach oers the following vises:
PCNC 1100 PCNC 770
PN 31759 or PN 30553 PN 31759
For more informaon on proper setup and use of the 5” vises, refer to documentaon that ships
with product.
A number of other ways can be employed for workholding. These include toe clamps, xture plates,
chucks, and vacuum tables.
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