Acer Supra 818PD, Operation Manual

Page: 40 / 238

818~2040 PD
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5-12
5.5 VERTICAL SURFACE GRINDING
5.5.1 IMPORTANCE OF VERTICAL SURFACE GRINDING
In some cases, there is a need to grind a vertical surface without need to change the workpiece
position.
5.5.2 MOUNTING WORKPIECE
In grinding a vertical surface, it is requested to mount the workpiece carefully. Make sure the
vertical surface to be ground is parallel with the table travel direction.
5.5.3 UNDERCUT ON STRAIGHT GRINDING WHEEL
In order to have proper clearance in vertical surface grinding when a straight grinding wheel is
employed, the side of grinding wheel should be cut to concave shape from its circumference
to the flange. This is so called as “undercut”, which provides clearance in vertical surface
grinding, shown as below left figure. With the undercut, the workpiece may feed to the
grinding wheel side without binding and no displacement of workpiece on the magnetic chuck.
5.5.4 RELIEVE AT WORKPIECE CORNER
Before performing vertical surface grinding, it is necessary to relieve the angle between the
vertical and horizontal surfaces. This will ensure a proper clearance between the grinding
wheel edge angle and the workpiece. See left figure as below.
圖
(G)
The grinding wheel side is cut
to a concave shape.
A clearance produced between
the workpiece corner.