Sharp TMV Series, Service And Parts Manual

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46
CUTTING "HOGSIN"
1. Peripheral relief too great.
2. Rake, angle too large
3. Improper speed 1. Use recommended angle.
2. Decrease rake angle.
3. Check and adjust.
VIBRATION
1. Insufficient clearance rubbing
2. Machine at fault
1. Use recommended
clearance angle
2. Check machine, be sure
arbor is at least 1/3 diameters
of cutter
CUTTER BURNS
1. Insufficient lubricant
2. Speed too fast 1. Add sulfur base oil
2. Decrease speed
HARD TO CHANGE SPEED OF
HORIZONTAL
1. Gears not meshed
2. Poor lubrication on spindle
shaft and gears
1. Use jog button
2. Check lubrication
POOR SURFACE FINISH
1. Feed too high
2. Dull tool
3. Speed too low
4. Insufficient number of cutter
teeth
1. Decrease feed and increase
speed
2. Resharpen
3. Increase surface speed
4. Use cutter with more
closely spaced teeth
WORK BURNISHING
1. Cut is too light
2. Insufficient peripheral relief
3. Land too wide
1. Increase depth of cut
2. Increase peripheral relief
angle
3. Decrease width of land
TEETH BREAKING Feed too high
Decrease feed per teeth may
be possible to maintain rate
by increasing the number of
teeth
CHATTER
1. Lack of rigidity in the machine,
fixtures arbor or work pie
2. Cutting load too great
3. Dull cutter
4. Poor lubrication
5. Straight tooth cutter
6. Peripheral relief angle too
great
. Improve rigidity
2. Decrease number of teeth
in contact with work piece
3. Resharpen
4. Improve lubrication
5. Decrease relief angle