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(11) | EP 0 255 267 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Improvements in or relating to the dressing of grinding wheels |
| (57) In a method of dressing a grinding wheel 14 to form thereon a peripheral surface
of a required cross-sectional profile, the grinding wheel is rotated at a predetermined
speed, and rotated about a parallel axis is a dressing wheel (10) having a hard peripheral
forming surface the cross-sectional profile of which is the complementary inverse
of said required cross-section profile. The peripheral surface of the grinding wheel
14 is brought into pressing engagement with the peripheral surface of the dressing
wheel 10, and while maintaining the pressing engagement the speed of rotation of the
dressing wheel is controlled in a manner to provide a difference in speed between
the engaging peripheral surfaces. The speed of rotation may be controlled by direct
control of an electric servo-motor 12 driving the dressing wheel 10, or by controlled
braking of the dressing wheel. For a given composition of grinding wheel and dressing
wheel the surface characteristics of the finished wheel may thus be determined in
a predictable fashion by pre-setting an appropriate predetermined speed of rotation
for the dressing wheel. |