Grizzly G1007 Owner's Manual page 38

operation and Work results
symptom
tool slips in collet.
Breaking tools or cutters.
Machine is loud when
cutting. overheats or bogs
down in the cut.
Workpiece vibrates or
chatters during operation.
table is hard to move.
Bad surface finish.
-36-
possible Cause
1. Collet is not fully drawn up into
spindle taper.
2. Wrong size collet.
3. debris in collet or in spindle taper.
4. taking too big of a cut.
1. rpM and or feed rate is too fast.
2. Cutting tool getting too hot.
3. taking too big of a cut.
1. excessive depth of cut.
2. dull cutting tools.
1. table locks not tight.
2. Quill lock not tight.
3. Workpiece not securely clamped to
table or into mill vice.
4. rpM and feed rate too high.
1. table locks are tightened down.
2. Chips have loaded up on ways.
3. Ways are dry and in need of lubri-
cation.
4. limit stops are interfering.
5. gibs are too tight.
1. Wrong rpM or feed rate.
2. dull cutting tool or poor cutting tool
selection.
3. Wrong rotation of cutting tool.
4. Workpiece not securely clamped.
possible solution
1. snug up draw bar.
2. Measure tool shank diameter and match with
appropriate diameter collet.
3. remove all oil and debris from collet and spindle
taper.
4. lessen depth of cut and allow chips to clear.
1. set correct rpM and feed rates.
2. use coolant fluid or oil for appropriate application.
3. lessen depth of cut and allow chips to clear.
1. decrease depth of cut.
2. use sharp cutting tools.
1. tighten down table locks.
2. tighten quill lock.
3. Check that clamping is tight and sufficient for the
job. Make sure mill vice is tight to the table.
4. use appropriate rpM and feed for the job.
1. Make sure table locks are fully released.
2. Frequently clean away chips that load up during
milling operations.
3. lubricate ways and handles.
4. Check to make sure that all limit stops are floating
and not hitting the limit switch.
5. adjust gibs (see page 30).
1. adjust for appropriate rpM and feed rate.
2. sharpen cutting tool or select a better cutting tool for
the intended operation.
3. Check for proper cutting rotation for cutting tool.
4. secure properly.
g1006/7 heavy duty Mill/drill