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Mill/Drill Operation
Symptom
Tool slips in spindle.
Breaking tools or cutters.
Workpiece vibrates or
chatters during operation.
Table is hard to move.
Bad surface finish.
Model G0795 (Mfd. Since 02/15)
Possible Cause
1. Tool is not fully drawn up into
spindle taper.
2. Taking too big of a cut.
3. Debris on tool or in spindle taper.
1. Spindle speed/feed rate is too fast.
2. Cutting tool too small.
3. Cutting tool getting too hot.
4. Taking too big of a cut.
5. Spindle extended too far down.
1. Table locks not tight.
2. Workpiece not secure.
3. Spindle speed/feed rate is too fast.
4. Spindle extended too far down.
1. Table locks are tightened down.
2. Chips have loaded up on ways.
3. Ways are dry and need lubrication.
4. Table limit stops are interfering.
5. Gibs are too tight.
1. Spindle speed/feed rate is too fast.
2. Workpiece not secure.
3. Spindle extended too far down.
4. Dull or incorrect cutting tool.
5. Wrong rotation direction of cutting
tool.
Possible Solution
1. Tighten drawbar.
2. Lessen depth of cut and allow chips to clear.
3. Clean collet and spindle taper.
1. Set spindle speed correctly (Page 26) or use slower
feed rate.
2. Use larger cutting tool and slower feed rate.
3. Use coolant or oil for appropriate application.
4. Lessen depth of cut and allow chips to clear.
5. Fully retract spindle and lower headstock. This
increases rigidity.
1. Tighten table locks.
2. Properly clamp workpiece on table or in vise.
3. Set spindle speed correctly (Page 26) or use a
slower feed rate.
4. Fully retract spindle and lower headstock. This
increases rigidity.
1. Make sure table locks are fully released.
2. Frequently clean away chips that load up during
milling operations.
3. Lubricate ways (Page 35).
4. Check to make sure that all table limit stops are not
in the way.
5. Adjust gibs (see Page 40).
1. Set spindle speed correctly (Page 26) or use a
slower feed rate.
2. Properly clamp workpiece on table or in vise.
3. Fully retract spindle and lower headstock. This
increases rigidity.
4. Sharpen cutting tool or select one that better suits
the operation.
5. Check for proper cutting tool rotation direction.
-39-
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