Grizzly G0781, Руководство пользователя

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Model G0781 (Mfd. Since 2/15)
Mill/Drill Operation
Symptom Possible Cause Possible Solution
Tool loose in spindle. 1. Cutter/tooling is loose.
2. Tool is not fully drawn up into spindle taper.
3. Debris on tool or in spindle taper.
4. Taking too big of a cut.
1. Make sure tooling is properly secured.
2. Tighten drawbar (
Page 25).
3. Clean tool and spindle taper.
4. Lessen depth of cut and allow chips to clear.
Breaking tools or
cutters. 1. Spindle speed/feed rate is too fast for
depth of cut, cutting tool size, or workpiece
material.
2. Improper or no lubricant/cutting tool getting
too hot.
3. Dull tooling.
1. Set spindle speed correctly, use slower feed rate
( Page 21), or take lighter cut.
2. Use proper lubricant for operation.
3. Sharpen/replace tooling.
Workpiece or tool
vibrates or chatters
during operation. 1. Table locks not tight.
2. Workpiece not secure.
3. Spindle speed/feed rate is too fast.
4. Gibs too loose in table.
5. Bit is chattering.
6. Chuck or cutter at fault.
1. Tighten table locks.
2. Properly clamp workpiece on table or in vise.
3. Set spindle speed correctly or use slower feed rate
( Page 21).
4. Tighten gibs ( Page 33).
5. Replace/sharpen bit; index bit to workpiece; use
slower feed rate.
6. Replace unbalanced chuck; replace/resharpen
cutter.
Table is hard to
move. 1. Table locks are tightened down.
2. Chips have loaded up on ways.
3. Ways and leadscrew need lubrication.
4. Gibs are too tight. 1. Make sure table locks are fully released.
2. Frequently clean away chips during operations.
3. Lubricate ways (
Page 30).
4. Adjust gibs ( Page 33).
Headstock is hard to
raise. 1. Headstock lock(s) or gib is at fault.
2. Column ways are binding.
3. Gib is too tight. 1. Loosen/replace lock lever and adjust gib.
2. Clean/relubricate column ways and rack (
Page 30).
3. Adjust gib (
Page 33).
Bad surface finish. 1. Spindle speed/feed rate is too fast.
2. Workpiece not secure.
3. Dull or incorrect cutting tool.
4. Wrong rotation direction of cutting tool.
1. Use correct spindle speed or slower feed rate
(
Page 21).
2. Properly clamp workpiece on table or in vise.
3. Sharpen cutting tool; select better tool for operation.
4. Check for proper direction of cutting tool rotation.
Cutting results not
square. 1. Spindle is not exactly 90° to table.
2. Table travel is inconsistent. 1. Tram the spindle (
Page 36).
2. Adjust gibs ( Page 33).
Motor or spindle
overheats. 1. Mill/drill operated at maximum speed for
extended period.
2. Fan cover clogged.
1. Allow mill/drill to cool; avoid operating at maximum
speed for long times.
2. Clean motor, let cool, and reduce workload.