Grizzly G0808, Руководство пользователя

Страница: 47 / 68

Model G0808 (Mfd. Since 11/15)
-45-
Symptom Possible Cause Possible Solution
Tool loose in
spindle. 1. Tool is not fully drawn up into spindle taper.
2. Debris on tool or in spindle taper.
3. Taking too big of a cut. 1. Tighten drawbar (
Page 30).
2. Clean tool and spindle taper, then re-install.
3. Lessen depth of cut and allow chips to clear.
Breaking tools or
cutters. 1. Spindle speed/feed rate is too fast.
2. Taking too big of a cut.
3. Cutting tool is too small.
4. Cutting tool getting too hot.
5. Spindle extended too far down. 1. Reduce spindle speed ( Page 33); reduce feed rate.
2. Decrease depth of cut and allow chips to clear.
3. Use larger cutting tool and slower feed rate.
4. Use coolant or oil for appropriate application.
5. Fully retract spindle and raise table (
Pages 27 &
31). This increases rigidity.
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. Spindle extended too far down.
5. Quill lock lever not tight.
6. Gibs too loose in table.
1. Tighten table locks (
Page 27).
2. Properly clamp workpiece on table or in vise.
3. Reduce spindle speed (
Page 33); reduce feed rate.
4. Fully retract spindle and raise table ( Pages 27 &
31). This increases rigidity.
5. Tighten quill lock lever ( Page 31).
6. Tighten gibs (
Page 46).
Table is hard to
move. 1. Table locks tightened down.
2. Chips loaded up on ways.
3. Ways dry and need lubrication.
4. Table limit stops interfering.
5. Gibs too tight.
1. Make sure table locks are fully released ( Page 27).
2. Frequently clean away chips that load up during
operations.
3. Lubricate ways.
4. Adjust table limit stops out of the way.
5. Adjust gibs (
Page 46).
Bad surface finish. 1. Spindle speed/feed rate too fast.
2. Dull or incorrect cutting tool/bit.
3. Wrong rotation direction of cutting tool.
4. Workpiece not secure.
5. Spindle extended too far down.
1. Reduce spindle speed ( Page 33); reduce feed rate.
2. Sharpen cutting tool or select one that better suits
the operation.
3. Reverse cutting tool rotation.
4. Properly clamp workpiece on table or in vise.
5. Fully retract spindle (this increases rigidity), and
raise table ( Pages 27 & 31).
Cutting/drilling
results not square. 1. Table and spindle not at 90° to each other.
2. Table travel is inconsistent. 1. Tram spindle (
Page 48).
2. Adjust gibs ( Page 46).
Spindle overheats. 1. Machine operated at high speeds for
extended period.
1. Allow machine to cool.
Lack of power at
spindle. 1. Wrong voltage. 1. Correct voltage.
Spindle does not
fully retract. 1. Poorly adjusted return spring.
2. Worn return spring. 1. Increase return spring tension (
Page 43).
2. Replace return spring.
Drilling Operation
Power Feed
Symptom Possible Cause Possible Solution
Power feed does
not move table or is
slipping. 1. Table locked.
2. Direction lever not engaged.
3. Gears not meshing or teeth missing.
4. Motor shaft and gear shaft not engaged. 1. Disengage table locks ( Page 27).
2. Select speed, engage direction lever ( Page 28).
3. Check gears and adjust/replace.
4. Replace clutch.
Operates at high
speed only or is
inconsistent. 1. Rapid traverse button at fault.
2. Wiring harness unplugged from circuit
board.
1. Inspect/replace rapid traverse button.
2. Reconnect wiring harness.