Sharp TMV Series Service And Parts Manual page 50

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