Bearings
in the grinding process, the appearance of their operations through the
grinding wheel rotating at high speed, so sea-resistant bearings in the
grinding if not according to operating instructions and to adjust the
equipment, it will appear in the bearing operation circuit breaker Bearings are all kinds of defects, resulting in the overall quality of the bearing. Bearing fine grinding, because the rough request is very high, the
appearance of the work surface grinding traces can usually be observed
with the naked eye to observe the appearance of the following main
traces of grinding.
Embody
the phenomenon of interspersed spiral traces showing the traces of the
main factors is to engage in wear and tear bearing grinding wheel
because of poor straightness, there is a high and low scene, grinding,
the wheel and the workpiece is only some touch when the workpiece or
wheel reciprocating motion After reflected in the workpiece will reproduce the interspersed spiral and the naked eye can be observed.
The pitch of these helixes is related to the speed of the workpiece
table and the speed of the workpiece. Together with the axis of the
grinding wheel and the guide rail of the workbench, it is also related
to the non-parallelism.
(A) The main factor of spiral formation
1. Bad dressing wheel, the corner is not chamfered, did not use coolant for dressing;
2. Workbench guide guide oil too much, resulting in work platform floating;
3. Machine accuracy is not good;
4. Grinding pressure is too large.
(B) the composition of the spiral has a factor
1. V-shaped rail rigidity is not good, when the grinding wheel offset occurs, only the wheel edge and touch the job appearance;
2. When dressing the quarrel, the speed of the working platform is not
stable and the accuracy is not high, so that the margin of the grinding
wheel is slightly less.
3. The workpiece itself is poor rigidity;
4. Abrasion
on the grinding wheel is too broken off the sand and the iron filings
under the workpiece grinding attached to the surface of the wheel, this
should be a good dressing wheel rinse or clean with cooling water.
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