Milling – Smithy Midas 1220 XL User Manual
Page 107
• Speed too high
• Reduce speed
• Too much pressure at tailstock
• Reduce pressure and increase
lubrication
Works stops turning but machine continues to run
Cause
Solution
• Work not mounted securely
• Remount work
• Tools forced into work
• Reduce force on tools
• Belts slipping
• Tension belts, use belt dressing or
replace belts
Diameter of work is not consistent
Cause
Solution
• Too much flex in workpiece
• Use a follow rest
• Too much flex in compound rest,
• Tighten gibs, clean ways
cross-slide or carriage
Too much backlash in the compound
Cause
Solution
• Loose spanner nuts
• Tighten spanner nuts
• Worn nut
• Replace nut
Machine slings oil from behind the chuck or in belt box
Cause
Solution
• Oil reservoir overfilled
• Check oil level
• Worn oil seal
• Replace felt in seal
Milling
Tool chatters
Cause
Solution
• Gibs too loose on cross slide, compound • Readjust gibs
or carriage
• Unused feeds not locked
• Lock all axes but the one moving
• Millhead not locked
• Lock millhead
• Quill too loose
• Tighten quill lock
25-4
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Troubleshooting