Deep grinding method of grinding disc and transverse grinding method of grinding wheel
The deep grinding method of the grinding disc is different from the transverse grinding method of the grinding wheel piece. It mainly uses a small grinding allowance (0.20-0.60 mm) with a small longitudinal feed amount and is ground in a vertical longitudinal cutting knife. With this grinding method, the grinding piece needs to be trimmed to have a front cone portion or a trapezoidal shape in order to gradually cut the margin, otherwise the cutting work is mainly concentrated on the outer corner of the grinding plate, so that the outer angle of the grinding plate is quickly become dull, affecting the grinding efficiency. And surface quality.
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When trimming the stepped grinding discs, pay attention to the fact that the largest outer circular surface is used for fine grinding and lightening, so it should be trimmed finely. The other step surfaces should be roughened and roughened. In addition, close to the workpiece. The step height of the layer should be made larger, and the step height close to the finished surface is made smaller. In this way, high productivity can be achieved while ensuring a small surface roughness value.
This grinding method is employed. Due to the reduced number of strokes and the rational use of the grinding discs (rough grinding with coarsely trimmed grinding discs, the cross grinding method of the fine grinding wheel is that the workpiece has no longitudinal movement, and the grinding wheel continuously feeds the workpiece to the workpiece at a very slow speed, Until the entire grinding allowance is removed.
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Compared with the longitudinal grinding method of the grinding wheel, the characteristics of the transverse grinding method:
1. The calorific value is large, the heat is several, and the heat dissipation condition is poor. When the supply of the grinding fluid is insufficient, the workpiece is easily burned.
2. The working condition of the abrasive grains on the width of the whole grinding wheel is the same, and the new metal layer is cut, and the cutting ability of the grinding wheel piece is fully exerted, so the grinding efficiency is high.
3. Because there is no axial relative movement, the abrasive particles will leave traces of repeated scribes on the surface of the workpiece. When the grinding wheel is not properly shaped due to poor rest or uneven wear, it will directly affect the geometric accuracy of the workpiece. Therefore, in general, the processing accuracy of the cross-grinding method is low and the surface roughness value is large. In order to partially reduce the above-mentioned defects, manual refeeding can be used in the grinding process of the grinding wheel, in particular, in the final grinding, so that the workpiece can be reciprocated longitudinally for a short distance.