The grindability of cemented carbide is evaluated by grinding ratio, grinding force and ground surface roughness in surface plunge grinding by resin bonded diamond wheel. Main results obtained are as follows; (1) the grinding ratio is increased with the increase of grain size and peripheral wheel speed, and the grinding ratio is increased with the decrease of the wheel depth of cut and the work speed; (2) the grinding force increases with the increase of the wheel depth of cut and the work speed, and the force decreases with the increase of the grain size and the peripheral wheel speed; (3) the ground surface roughness decreases with the increase of the peripheral wheel speed, and the surface roughness decreases with decrease of the grain size, wheel depth of cut and work speed; (4) these grinding conditions are closely related with the grain depth of cut, and the decrease of the grain depth of cut brings about the increase of the grinding ratio, the decrease of the grinding force and the surface roughness; (5) the precision and efficient grinding of cemented carbide is realizable by the control of the grain depth of cut.
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