| Problem |
Possible Cause |
Suggested Correction |
Chatter
|
Wheel out of balance
|
Heavy dress or replace wheel
|
| |
Wheel not tight on spindle
|
Tighten flanges spindle
|
| |
Blade angle too steep
|
Change work blade
|
| |
Work too high above
|
Readjust work blade center
|
| |
Work blade too thin or warped
|
Replace blade
|
| |
Wheel too hard or too fine
|
Replace wheel or make wheel act softer
|
| |
Glazed or loaded wheel
|
Redress
|
| |
Blade not properly clamped
|
Readjust blade
|
| |
Too heavy a cut
|
Decrease stock removal rate
|
| |
Vibration transmitted to machine
|
Check for vibration
|
Feed lines
|
Grinding wheel not relived on exit side
|
Dress wheel so it stops grinding 1/2" from exit table
|
| |
Work guides improperly set
|
Readjust guides
|
| |
Wheel not uniform across face
|
Redress
|
Scored work
|
Pick-up blade (dirt, chips, abrasive)
|
Use coolant with greater lubricity or change work
|
Burned work
|
Improper coolant flow
|
Readjust nozzle
|
| |
Dull diamond glazing
|
Replace diamond or rotate wheel
|
| |
Wheel too hard
|
Replace wheel or make wheel act softer
|
| |
Dress rate too slow
|
increase diamond traverse rate
|
Fish tails
|
Dirty coolant
|
Replace coolant or filters
|
| |
Loose grit in wheel
|
Redress wheel
|
Poor finish
|
Improper wheel grade
|
Proper adjustments are self_evident
|
| |
Dirty coolant
|
|
| |
Dress rate too fast
|
|
| |
Jumpy, erratic dressing traverse rate
|
|
| |
Dull diamond
|
|
| |
Diamond loose |
|
| |
Blade not tight
|
|
| |
Blade angle too steep
|
|
| |
Pick-up on blade
|
|
| |
Oil or loading on wheel face
|
|
| |
Feed wheel loose
|
|
| |
Feed wheel speed too high |
|
| |
Work too high above center
|
|
| Out-of-round |
Work not high enough above center
|
Readjust work blade
|
| |
Work piece bowed
|
Pre-straighten work piece
|
| |
Feed wheel not round
|
Properly redress feed wheel
|
| |
Blade angle not steep enough
|
Change work piece
|
| |
Feed wheel too slow
|
Increase feed wheel speed
|
Barrel-shaped work (low ends)
|
Work guides on entrance and exit sides deflect towards feed wheel
|
Readjust entrance and exit guides
|
| |
Face of feed wheel not straight at contact point with work piece
|
Properly dress feed wheel; be sure truing fixture is properly set
|
Concave work (low center)
|
Work guides on entrance and exit sides deflected toward the grinding wheel. Also see second cause above
|
Readjust entrance and exit guides
|
Taper on front
|
Work guides on end of work deflected toward the feed wheel. Also see second cause in #8
|
Readjust entrance guides
|
Taper on rear
|
Work guides on exit end of work deflected toward the feed wheel. Also see second cause in #8
|
Readjust exit guides
|
Erratic work sizes
|
Gins not adjusted properrly on upper and lower slides
|
Readjust gibs
|
| |
Wear in infeed screw and nut
|
Repair infeed mechanism
|
| |
Infeed lever not held tight
|
Tighten nut
|
| |
Insufficient lubrication on slides
|
Provide proper lubrication
|
| |
Work blade loose
|
Tighten blade
|
| |
Parts too hot (due to wheel and/or coolant)
|
Change wheel, adjust coolant flow, or make wheel cut more freely
|
| |
Feed wheel camming
|
Tighten collet screws, replace feed wheel bearings
|
Work not straight
|
Work not straightened sufficiently before grinding
|
Pre-straighten work piece
|
| |
Too much stock removal on a previous or prior passes
|
Adjust stock removal rates
|
| |
Parts too hot (due to wheel and/or coolant)
|
Change wheel, adjust coolant flow or make wheel cut more freely
|
Straight taper on work
|
Work guides improperly set
|
Readjust guides
|
| |
Blade not level
|
Readjust blade
|
| |
Loose gibs
|
Adjust and tighten gibs
|
| |
Parts not end to end in through feed
|
Adjust feed rate
|
| |
Parts too hot (due to in through feed wheel and/or coolant)
|
Change wheel, adjust coolant flow or make wheel cut more freely
|
