9 GRINDING APPLICATION
9-1
9.1
Centerlessgrinding principle
Centerless grinding means no need to clamp workpiece for griding. The
grindingmethod is as figure shown. It’s consisting of grinding wheel, regulating
wheel and work rest. Grinding wheel is used for grinding, regulating wheel for
controling rotation workpieces and enable its rotation to be teh same as feed speeed.
The workrest is used t osupportworkpiece in girnding. Therer is other smilar ways
for the collaboration of these parts. Other methods are teh same in principle, except
tangential feed grinding.
In the same way as cyindrical grinding, grinding is made by shortening the gap
between center of workpieceand surfaceof grinding wheel. Thus,workrest and
regulating whel are to support, center and rotate workpiece. The turning direction of
grinding wheel is reverse to the regulating wheel. The workpiece is pressed against
workrest and regulating whel in the grinding wheel process. The turning speed of
workpiece is made to be the same as that of regulating wheel. The drive is carried out
by friction between regulating wheel and wrokpiece. Real circle is formed by the
above threee element’s arrangement. First assuming that the workpieces’s center
height is the same as that of the grinding and regulating wheels thus the out of round
part on circumference of workpiecepressng directly opposite place on geometir of
two grinding wheel will from a concave.
A circle with equial diameters after repeating the action mentioned above is formed
9.
GRINDING APPLICATION
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