33
TROUBLESHOOTING (Continued)
BEDKNIFE GRINDING
--POSSIBLE CAUSE--
--REMEDY--
--REASON--
--PROBLEM--
Direct coolant into the grinding
wheel, at the point of the grind.
See Operators Manual.
Take off about .002 to .003"
[.05 to .075mm] per pass
during rough grind. See
Operators Manual.
Dress the wheel before the
finish-grinding pass on each
bedknife. See Operators
Manual.
Dress the wheel before the
finish-grinding pass on each
bedknife. See Operators
Manual.
Take off about .002 to .033"
[.05 to .075 mm] per pass
during rough grind. See
Operators Manual.
Set the traversing speed to 12
FT/MIN.
Visually check the outside-
diameter run out while slowly
rotating the wheel. Also check
the motor without a wheel
installed. Replace the wheel if
out-of -round.
The top face of
the bedknife
shows burn
marks from being
too hot.
Grinding wheel is
glazing too
quickly.
Grinding motor
vibrates exces-
sively.
When the front face of the
bedknife gets too hot, the
steel loses its temper
(softens).
Too much stock removal in
one pass creates too much
heat and softens the steel.
Wheel will glaze if not
dressed often enough.
Also, as a general rule, use
a higher traverse speed for
the heavy grind.
Wheel will glaze if not
dressed often enough. If
grinding wheel is not
extended 1/2" [12 mm] over
bedknife, it will glaze more
quickly because there is
less dressing.
Too light a grinding cut
doesn't permit enough
dressing action on the
wheel, so it glazes.
Too slow a traverse speed
can cause excessive heat
buildup in the grinding
wheel, which glazes the
wheel.
A grinding wheel which isn't
properly trued up on outside
or inside diameters can
vibrate excessively and
transfer that vibration to the
motor.
A--Coolant not directed onto
the bedknife and grinding
wheel.
B--Too heavy stock removal
during grinding.
C--Grinding wheel is glazing.
A--Wheel needs dressing.
B--Too light a cut when rough
grinding.
C--Grinding head is traversing
too slow.
Grinding wheel is out of
balance.
Summary of Contents for ACCU-Pro 670
Page 34: ...34 ELECTRIC SCHEMATIC 67095233...
Page 35: ...35 This Page Left Intentionally Blank for Note Taking Purposes...
Page 36: ...36 PARTS LIST 6709528 MAIN BASE ASSEMBLY...
Page 38: ...38 PARTS LIST Continued 6709529 GRINDING HEAD ASSEMBLY...
Page 40: ...40 PARTS LIST Continued 6709520 TRAVERSE CARRIAGE ASSEMBLY...
Page 42: ...42 PARTS LIST Continued 6709524 BEDKNIFE SUPPORT ASSEMBLY...
Page 44: ...44 PARTS LIST Continued 6709523 CONTROL PANEL ASSEMBLY 50 51...
Page 46: ...46 PARTS LIST Continued 6709523 ELECTRICAL ASSEMBLY...
Page 48: ...48 PARTS LIST Continued 7469909 COOLANT PUMP TANK ASSEMBLY 15...
Page 50: ...50...