Tormach 1100M - Machining Operations Are Loud (Chattery)

12: TROUBLESHOOTING
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Specifications subject to change without notice.
Page 252 Tormach 1100M® Operator's Manual (Version 1223A)
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12.9.2 Machining Operations are Loud ("Chattery")
Cause: Inappropriate cutting parameters or CAMsettings.
Probability How-To Steps
High
1. Verify that you're using the correct cutting parameters: use the feed rate and spindle overrides
to adjust cutting parameters during operation.
2. Confirm that tool offsets are correct.
Cause:Worn or broken cutting tools.
Probability How-To Steps
High
Inspect for worn or broken cutting tools, and replace as necessary.
Cause: Swarf in the spindle or on the tool holder's shank.
Probability How-To Steps
Medium
1. Inspect inside the spindle and on the tool holder's shank for swarf. If necessary, clean the
components.
2. Verify that the spindle and tool holder's contact surfaces are clean, dry, and free of grease or
oil.
Cause: Insufficient preload of drawbar springs.
Probability How-To Steps
Medium Verify that there's sufficient preload of the drawbar disc springs:
1. Examine the shop air pressure, and verify that there's a minimum of 90 psi compressed air at
the machine's FRLFilter-Regulator-Lubricator.
If the machine's inlet air pressure is too low, it limits the machine's maximum tool clamping
force.
2. Tighten the drawbar to increase the tool's clamping force.
3. Verify that the clamping force is increased as high as possible while still smoothly and reliably
clamping and unclamping tool holders.
Cause:Cracked or broken disc springs.
Probability How-To Steps
Low
Remove the disc springs from the drawbar assembly and inspect them for damage.
If you find any cracked or fractured springs, replace all eight disc springs in the stack with Power
Drawbar Spring Washer (PN 31319).