Operations
Symptom |
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Bad surface finish. | 1. | Incorrect spindle speed or feed rate. | 1. | Adjust for proper spindle speed and feed rate (Page | ||||
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| 2. | Dull tool or poor tool selection. | 2. | Use sharp tools; use correct tool for the operation. |
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| 3. | Too much play in gibs. | 3. | Adjust gibs (Page 56). |
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| 4. | Tool too high. | 4. | Lower tool position. |
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Cannot |
| remove | 1. | Quill not retracted all the way back into the | 1. | Rotate the quill handwheel until the tapered tool is | ||
tapered | tool | from |
| tailstock. |
| forced out of quill. | ||
tailstock quill. |
| 2. | Debris/oil not removed from tapered mating | 2. | Always make sure that tapered mating surfaces are | |||
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| surfaces before inserting into quill. |
| clean before inserting. |
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Gear(s) will not line | 1. | Gear(s) not aligned in headstock. | 1. | Rotate spindle by hand until gear(s) falls into place. | ||||
up and mesh. |
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Cutting |
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| tool | 1. | Tool holder not tight enough. | 1. | Check for debris, clean, and | |
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| machine | 2. | Cutting tool too far out from holder; lack of | 2. | |||
components vibrate |
| support. |
| length is sticking out of tool holder. | ||||
excessively | during |
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3. | Too much play in gibs. | 3. | Adjust gibs (Page 56). | |||||
cutting. |
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| 4. | Cutting tool is dull. | 4. | Sharpen/replace. | |
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| 5. | Incorrect spindle speed or feed rate. | 5. | Adjust for proper spindle speed and feed rate (Page |
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Cross/compound | 1. | Too much play in gibs. | 1. | Adjust gibs (Page 56). | ||||
slide | or | carriage | 2. | Handwheel(s) loose. | 2. | Tighten handwheel fasteners. | ||
feed | has | sloppy | 3. | Too much leadscrew backlash (cross slide | 3. | Adjust leadscrew backlash (Page 57). | ||
operation. |
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| 4. | Leadscrew mechanism worn or out of | 4. | Tighten any loose fasteners on leadscrew |
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| adjustment. |
| mechanisms; check for excessive wear/replace if |
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Cross/compound | 1. | Gibs are loaded up with chips/grime. | 1. | Remove gibs, clean ways, lubricate, and properly | ||||
slide | or | carriage |
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| adjust gibs (Page 56). | ||
feed hard to move. | 2. | Gibs are too tight. | 2. | Adjust gibs (Page 56). | ||||
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| 3. | Leadscrew backlash setting too tight (cross | 3. | Properly adjust cross slide leadscrew backlash |
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| slide only). |
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| 4. | Bedways are dirty/dry. | 4. | Clean and lubricate bedways. |
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| 5. | Gearing is at fault. | 5. | Inspect/replace gearing. |
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Inaccurate | turning | 1. | Tailstock not properly aligned with | 1. | Properly align tailstock with headstock (Page 28). | |||
results from one end |
| headstock. |
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of workpiece to the |
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other. |
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Chuck |
| jaws | will | 1. | Chips/debris lodged in jaws. | 1. | Remove jaws, clean and lubricate jaws, | |
not move or do not |
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move easily. |
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Tailstock quill will not | 1. | Quill lock is tightened down. | 1. | Turn quill lock counterclockwise to loosen. | ||||
feed out of tailstock. |
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G9249 12" x 37" Belt Drive Gap Bed Lathe |