Tormach PCNC 770 - Tool Holders

Chapter 4
42
UM10350_PCNC770_Manual_0916A
Operation
3. Re-ghten the belt so that there is approximately 1/8”-1/4” of belt deecon midway between
the pulleys with a rm nger press. Lock the motor mounng and stow handles in the vercal
posion.
4.5 Tool Holders
This secon describes using tooling compable with the standard R8 spindle. For more informaon
on other spindle opons, refer to the product-specic documentaon.
The Tormach Tooling System (TTS
®
) is the recommended tool holding method for PCNC mills. The
advantages of TTS over other tooling opons include:
• Exact tool oset repeatability
• Easily adaptable to tool preseng techniques
• Quickest manual tool change me
• Shortest tool change clearance distance
• Compability with Tormach power drawbar and Tormach automac tool changer (ATC)
TTS uses a precision 3/4” collet in combinaon with a drawbar and interchangeable TTS tool holders.
Many dierent TTS tool holders are available.
Prior to using TTS for the rst me, the TTS collet must be installed. To install the collet:
1. Using a clean rag, apply a degreasing agent to the inside taper of the spindle and also the
enre surface of TTS collet. Wipe clean and dry.
2. Apply a small amount of An-seize (PN 31273) grease to the following surfaces: drawbar
threads, outside taper of TTS collet, inside taper of R8 spindle. Do not apply grease to the
inside surface of the TTS collet.
3. Open the spindle door.
4. Swing the spindle locking fork so it engages with the ats on the top of the spindle. If necessary
turn the spindle by hand unl the ats line up.
5. Using one hand, insert the TTS collet into the boom of the spindle. Twist the collet while
applying light upward pressure unl the collet groove aligns with the spindle alignment pin
and the collet is pushed completely inside the spindle taper. With the other hand, insert the
drawbar into the top of the spindle and rotate the drawbar several turns to engage several
threads in the TTS collet.
6. To nish ghtening the drawbar, place and hold a TTS tool holder inside the TTS collet and
against the spindle nose. Use a 13 mm wrench to rotate the drawbar and ghten the collet
against the TTS tool holder.