Acer Supra 818PD, Operation Manual

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818~2040 PD
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5-15
5.6.4 ANGULAR SURFACE GRINDING
ANGULAR SURFACE GRINDING: As above mentioned, the angular surface grinding
can be performed by using the straight face of grinding wheel to grind a workpiece, which is
positioned at a desired angle. Or you can dress the grinding wheel to a desired angle, then
downfeed the grinding wheel to workpiece for performing plunge grinding. The so called
plunge grinding is the grinding wheel moves in a radial direction to workpiece for grinding.
When the workpiece is clamped at an angle, grinding performed by a straight grinding wheel
face is same as that of common surface grinding. Dressing the grinding wheel face to a
desired angle according to following procedures:
a. Mount the workpiece on a magnetic chuck or another clamping device.
b. Move the saddle of grinding machine, so that the workpiece is positioned under the
grinding wheel angular face.
c. Tighten the saddle securely, which may avoid displacement during grinding.
d. Start the wheel spindle running, and then lower the grinding wheel until it just touches the
workpiece and sparks occur.
e. Slowly move table, and find the highest point where the grinding wheel touches the
workpiece.
f. The grinding wheel lowers 0.025~0.05mm at each pass. Continuously perform grinding
until size approaches your desired final size.
g. Dress the grinding wheel, and then perform fine grinding operations.