SB1024/SB1025/SB1026 | TR O U B L E S H O OTI N G | For Machines Mfg. Since 8/09 |
Symptom
Possible Cause
!
Possible Solution
Tool slips in collect. 1. | Collet is not fully drawn into | 1. | Snug up the drawbar to fully seat the collet. |
| spindle taper. |
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2. | Wrong size collet. | 2. | Use correct collect for tool shank diameter. |
3.Debris on mating surfaces of collet 3. Remove oil and debris from mating surfaces, then
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| and spindle. |
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| 4. | Excessive depth of cut. | 4. | Decrease depth of cut and allow chips to clear. |
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Tool breakage. | 1. | Spindle speed too slow/feed rate too | 1. | Use correct spindle speed and feed rate (Page 37). |
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| fast. |
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| 2. | Tool getting too hot. | 2. | Use coolant; reduce spindle speed/feed rate |
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| (Page 37). |
| 3. | Excessive depth of cut. | 3. | Decrease depth of cut and allow chips to clear. |
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Workpiece chatters | 1. | Table/saddle/knee locks not tight. | 1. | Tighten all locks on mill that are not associated |
or vibrates during |
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| with necessary table movement for the operation. |
operation. | 2. | Workpiece not securely clamped to | 2. | Check that clamping is tight and sufficient for the |
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| table or mill vise. |
| operation; make sure mill vise is clamped tight to |
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| table. |
3.Tool not secure or is damaged. 3. Properly secure the tool; replace if damaged.
4.Spindle speed too fast/feed rate too 4. Use correct spindle speed and feed rate (Page 37). slow.
| 5. | Gibs are too loose. | 5. | Properly adjust gibs (Page 58). |
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Table hard to | 1. | Table/saddle/knee locks are | 1. | Full loosen locks needed for movement. |
move. |
| tightened down. |
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2.Chips have loaded up on the ways. 2. Frequently clean away chips from the ways that build up during operation.
| 3. | Ways are dry and in need of | 3. | Use the |
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| lubrication. |
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| 4. | Gibs are too tight. | 4. | Properly adjust gibs (Page 58). |
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Bad surface finish. | 1. | Wrong spindle speed/feed rate. | 1. | Use correct spindle speed and feed rate (Page 37). |
2.Dull/damaged tool; wrong tool for 2. Sharpen/replace tool; use correct tool for operation. operation.
3.Wrong spindle rotation direction for 3. Check for proper spindle rotation direction for tool. tool.
4.Workpiece not securely clamped to 4. Check that clamping is tight and sufficient for the
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| table or mill vise. |
| operation; make sure mill vise is clamped tight to |
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| table. |
5. | Gibs are too loose. | 5. | Properly adjust gibs (Page 58). | |
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Power feed chatters | 1. | Brass bevel gear is not meshed with | 1. | Remove parts from the power feed side of the |
or grinds during |
| the drive gear. |
| longitudinal leadscrew to ensure the bevel gear is |
operation. |
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| properly meshed; make sure the ball handle nut is |
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| tight. |
| 2. | Power feed unit is at fault | 2. | Replace. |
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