818~2040 PD
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5-17
5.7.3 SURFACE GRINDING PROBLEM ANALYSIS
Surface grinding defects and causes are shown on below table:
Surface grinding defects and causes
DEFECT CONDITIONS
CAUSES
Burning or
grid pattern
Workpiece
poor finish
Chattering
mark
Scratch
Grinding
wheel
smooth
Grinding
wheel
clogged
Workpiece
not parallel
Workpiece
not parallel
Workpiece
slip on chuck
‧
Machine operation
Coolant dirted
╳
╳
Insufficient coolant amount
╳
╳
╳
Incorrect coolant
╳
╳
Chuck is dirted or has burrs
╳
╳
╳
Insufficient holding force
╳
Poor holding
╳
╳
╳
Workpiece slip on chuck
╳
Diamond is dulled
╳
Grinding wheel is dressed too
fine
╳
╳
╳
╳
╳
Too long grinding travel
╳
Guard is loosened
╳
‧
Grinding wheel
Grains are too fine
╳
╳
╳
Grinding wheel structure is
too tight
╳
╳
Bonding is too hard
╳
╳
╳
╳
╳
╳
Bonding is too soft
╳
╳
‧
Machine setup
Incorrect chuck position
╳
Diamond is loosened or
broken
╳
╳
╳
No magnetic force on chuck
╳
vibration
╳
‧
Workpiece condition
Heat treatment stress
╳
Too thin
╳
Summary of Contents for Supra 2040PD
Page 57: ...818 2040PD 3 CHAP 1 CONTROL PANEL OPERATION 1 1 LAYOUT OF CONTROL PANEL ...
Page 58: ...818 2040PD 4 1 2 MAIN DISPLAY AND BUTTON NUMBERS ON CONTROL PANEL ...
Page 59: ...818 2040PD 5 1 3 GRINDING SETTING DISPLAY AND BUTTON NUMBERS ...
Page 75: ...818 2040PD 21 3 5 SCREEN CONTRAST BRIGHTNESS WINDOW ...
Page 82: ...818 2040PD 28 4 5 SYSTEM PARAMETER Enter from 4 5 1 OPERATOR ...
Page 83: ...818 2040PD 29 SYSTEM MAINTENANCE PERSONNEL ...
Page 84: ...818 2040PD 30 4 5 2 SETTING PASSWORD TABLE ...
Page 85: ...818 2040PD 31 4 5 3 SYSTEM DATE TIME ...
Page 86: ...818 2040PD 32 4 5 4 ADJUSTING CONTRAST BRIGHTNESS ...
Page 91: ...818 2040PD 37 5 2 10 SYSTEM DATA SETTING KEEP SET SYSTEM DISPLAY ...
Page 178: ...1020 PD 1224 PD LUBRICATION SYSTEM 258 PL 16 ...
Page 183: ...14 16 PD SPINDLE PL 01 ...
Page 185: ...14 16 PD COLUMN 3821 3821H 14SERIES 4821 4821H 16SERIES PL 02 ...
Page 187: ...14 16 TD WHEEL GUARD WHEEL FLANGE PL 04 ...
Page 208: ...14 16PD LONGITUDINAL HYDRAULIC SYSTEM PL 10 ...
Page 222: ...14 16 PD LUBRICATION SYSTEM 368 PL 15 ...
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