Adjust The Initial Setup - Tormach Automatic Tool Changer Owner's Manual

TECHNICAL DOCUMENT
3. Depending on whether the tool holder releases or not, do one of the following:
If the Tool Holder Releases Tighten the Power Drawbar in quarter-turn increments with two
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adjustable wrenches. After each turn, push the Release Tool button. Stop when the tool holder does
not release. Then, loosen the Power Drawbar one quarter-turn with two adjustable wrenches.
If the Tool Holder Doesn't Release Loosen the Power Drawbar in quarter-turn increments with
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two adjustable wrenches while pushing the Release Tool button. Stop when the tool holder releases.
4. Make a visual reference to help you set or adjust the drawbar tension in the future: use a paint pen to make
a witness mark on both the head of the drawbar and the end of the spindle.
About Drawbar Tension
While machining, the Tormach Tooling System (TTS) collet holds a Tormach Tooling System (TTS) tool holder in the
spindle by applying a clamping force to both the shank and the shoulder of the tool. The tension force that is
applied to the drawbar pulls the Tormach Tooling System (TTS) collet into the spindle taper, which then applies the
clamping force to the Tormach Tooling System (TTS) tool.
The force on the drawbar — known as drawbar tension — is applied differently depending on the tool changing
method:
Automatic (using the Power Drawbar) Tension is applied by the compressed spring washers.
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Manual Tension is applied when you tighten the drawbar into the collet using a wrench.
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Adjust the Initial Setup

In this adjustment, you'll verify that there's enough clearance between the end of the drawbar and the Power
Drawbar cylinder.
NOTICE! If you don't do this adjustment, there's a risk that the drawbar can loosen, or that operations can be
louder than normal.
1. Examine the space between the hex head screw on the Power Drawbar cylinder's rod and the top of the
drawbar.
©Tormach® 2020
Specifications subject to change without notice.
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TD10560: Owner's Guide: M ATC Retrofit for PCNC 770 Series 3 (1220A)
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