The factors affecting grinding wheel

The factors affecting grinding wheel

Grinding effect is a general term, because the effect involves several aspects, and there are many factors affecting the grinding effect of the grinding wheel. Therefore, when discussing what factors will affect the grinding effect of the grinding wheel, it is necessary to first clarify the specific measurement standard of the "grinding effect", which covers many aspects, such as grinding efficiency, sharpness, grinding accuracy, finish and grinding wheel life.

1. Grinding efficiency

Grinding efficiency refers to the rate at which workpiece material is removed per unit time, and factors that affect this goal include:

Grinding wheel material and bond type: Different grinding wheel materials (such as corundum, silicon carbide, diamond, cubic boron nitride, etc.) have different hardness and wear resistance, which directly affects the material removal rate during grinding. The type of bond (resin, metal, ceramic, etc.) will affect the retention and self-sharpness of the grinding wheel during grinding.

Abrasive size: large coarse-grained abrasive removal amount, suitable for coarse grinding or rapid removal of materials, but the relative grinding surface is rough; Fine abrasive is suitable for fine grinding, low efficiency.

The hardness of the grinding wheel: the grinding wheel with high hardness has higher grinding efficiency and is suitable for hard materials, but the self-sharpness is poor and may be easy to block; the soft grinding wheel has good self-sharpness, but wears quickly, and frequent dressing will affect the efficiency.

Cutting depth and feed speed: large cutting depth or fast feed speed can improve grinding efficiency, but it is easy to produce high heat and grinding force, resulting in increased grinding wheel wear or workpiece deformation.

Coolant: The proper use of coolant can reduce the grinding temperature, reduce heat damage, and improve efficiency.

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