Symptom

Possible Cause

Possible Solution

 

 

 

 

 

Tool slips in collet.

1.

Collet is not fully drawn up into

1.

Tighten drawbar.

 

 

spindle taper.

 

 

 

2.

Wrong size collet.

2.

Measure tool shank diameter and match with

 

 

 

 

appropriate diameter collet.

 

3.

Debris on collet or in spindle taper.

3.

Clean collet and spindle taper.

 

4.

Taking too big of a cut.

4.

Lessen depth of cut and allow chips to clear.

 

 

 

 

 

Breaking tools or cutters.

1.

Spindle speed too slow/feed rate is

1.

Set spindle speed correctly (Page 27) or use a

 

 

too fast.

 

slower feed rate.

 

 

 

2.

Use coolant fluid or oil for appropriate application.

 

2.

Cutting tool getting too hot.

 

(Follow cutting fluid manufacturer's recommendation

 

 

 

 

for proper use and safety.)

 

 

 

3.

Decrease depth of cut.

 

3.

Taking too big of a cut.

4.

Fully retract spindle and lower headstock. This

 

4.

Spindle extended too far down.

 

increases rigidity.

 

 

 

 

 

Workpiece vibrates or

1.

Table locks not tight.

1.

Tighten down table locks (Page 32).

chatters during operation.

2.

Quill lock lever not tight.

2.

Tighten quill lock lever.

 

3.

Workpiece not securely clamped to

3.

Check that clamping is tight and sufficient for the job.

 

 

table or into mill vice.

 

Make sure mill vice is tight to the table.

 

4.

Spindle speed is too slow /feed rate

4.

Set spindle speed correctly (Page 27) or use a

 

 

is too fast.

 

slower feed rate.

 

 

 

5.

Fully retract spindle and lower headstock. This

 

5.

Spindle extended too far down.

 

increases rigidity.

 

 

 

 

 

Table is hard to move.

1.

Table locks are tightened down.

1.

Make sure table locks are fully released.

 

2.

Chips have loaded up on ways.

2.

Frequently clean away chips that load up during

 

 

 

 

milling operations.

 

3.

Ways are dry and need lubrication.

3.

Lubricate ways and handles (Page 36).

 

4.

Table limit stops are interfering.

4.

Check to make sure that all table limit stops are not

 

 

 

 

in the way.

 

5.

Gibs are too tight.

5.

Adjust gibs (see Page 41).

 

 

 

 

 

Bad surface finish.

1.

Spindle speed is too slow/feed rate

1.

Set spindle speed correctly (Page 27) or use a

 

 

is too fast.

 

slower feed rate.

 

 

 

2.

Sharpen cutting tool or select one that better suits the

 

2.

Using a dull or incorrect cutting tool.

 

operation.

 

 

 

3.

Check for proper cutting rotation for cutting tool.

 

3.

Wrong rotation of cutting tool.

4.

Secure properly to the table.

 

4.

Workpiece not securely clamped.

5.

Fully retract spindle and lower headstock. This

 

5.

Spindle extended too far down.

 

increases rigidity.

 

 

 

 

 

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Model G0704 (Mfg. since 09/09)

Page 42
Image 42
Grizzly G0704 owner manual For proper use and safety