Smithy Midas 1220 LTD - Manual (Page 96)

• Too much space between bearing and dial • Add shim washers
Lathe Turning
Cut is rough
Cause Solution
• Tool dull • Sharpen or replace tool
• Tool not ground properly • Regrind tool
• Tool at wrong angle • Correct tool position
• Tools not held tightly • Tighten toolholder
• Wrong cutter for material • Use correct cutter
• Cutting speed incorrect • Increase or reduce speed
Work has unwanted taper
Cause Solution
• Work improperly aligned • Realign centers on work
• Debris in spindle, setup, or tools • Clean and reset setup, work, or tool
• Offset tailstock incorrectly positioned • Correct position of tailstock
• Spindle out of alignment • Tighten taper bearings to return to
alignment, replace spindle bearings
Machine vibrates
Cause Solution
• Work mounted wrong • Remount work
• Speed too high • Reduce speed
• Too much pressure at tailstock • Reduce pressure and increase
lubrication
Work 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
crosslide, or carriage
Midas 1220 LTD Operator’s Manual
19-3
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