Sharp V-1, General & Electrics Manual

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SHARP
V-1 KNEE MILL GENERAL MANUAL
CH8-3 KRDM24C0 V4.0S
8.1.2 TABLE B (FOR MILLING)
Problem Diagnostics Troubleshooting
Cutter misalignment during
rotation
Misalignment in cutter itself
Properly grinding of cutter
and cutting edge
Misalignment while mounting
cutter
Reducing clearance between
shank and hole
Bending of shank
Grinding the shank properly,
reducing tangential forces,
and clearing debris
Vibration during milling
Workpiece moving up while
up milling
Using oblique cutting and
down milling
Shank is long and small Increasing rigidity of shank
Large backlash of lead screw Adjusting the blacklash
Workpiece is not clamped
well
Clamping workpiece firm ly
Heavy load in cutting
Reducing spindle speed,
cutting depth, and feeding
rate
The frequency of cutting force
variation is close to machine
natural frequency
Using cutter with less teeth
Loose of End milling cutter
Axial force acts toward the
direction away from spindle
Selecting proper oblique and
rotational to change the
direction of axial force
Deformation of workpiece
Workpiece is not clamped
properly
Change clamping style and
do not put excessive
clamping force during
finishing cutting
Damage on table surface Smoothing the table surface
residual stress in workpiece
Annealing workpiece
thoroughly
Discontinuity occurred in
plain milling
The center of spindle is not
perpendicular to table or
saddle
Modifying the sliding way and
making it to be
perpendicular to spindle
Thermal deformation
Controlling the temperature
rising of machine
Actual cutting depth does
not match the setting value
Shank deforms while milling
Increasing the rigidity of
shank and reducing cutting
force
Workpiece deformed and was
not fixed well
Fixing the workpiece properly