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Grinding tool grinding wheel using characteristics
source:蓝鸟砂轮|浙江蓝鸟科技股份有限公司【官网】    Release date:2017-11-30 8:55:26
Grinding wheel is the main type of abrasive grinding. In abrasive grinding wheel is to join the binder, the compact, drying, and roasting, made of a porous body. Because of the different abrasive, binder and manufacturing technology, the characteristics of the grinding wheel difference is very big, so the quality of grinding machining, productivity and economy has an important influence. The characteristics of the grinding wheel is dominated by abrasive, strength, binders, hardness, factors such as organization, shape and size.
There are many different kinds of grinding wheel.
According to the abrasive used can be divided into ordinary abrasive corundum and silicon carbide grinding wheel and natural abrasive superhard abrasive (diamond and cubic boron nitride, etc.) and grinding wheel;
According to the shape can be divided into flat wheel, bevel edge grinding wheel, cylinder wheel and cup wheel, disc wheel, etc. According to the binder can be divided into ceramic grinding wheel, resin wheel, rubber wheel, the metal grinding wheel, etc. The characteristics of the grinding wheel parameters are mainly abrasive, viscosity, hardness, binder, shape, size, etc.
Due to the grinding wheel is usually work under high speed, and thus should be done before using turning test (guarantee the grinding wheel working at the highest speed, don't burst) and static balance test (to prevent machine tool vibration by work). Grinding wheel at work after a period of time, should be finishing grinding performance and to restore the correct geometry.
Features are: with the grinding wheel
Due to severe friction, and make the grinding zone temperature is very high. This causes stress and deformation is generated, and even cause surface burn. So when grinding have to inject a large number of cooling liquid, in order to reduce the grinding temperature. Cooling fluid can also be chip removal and lubrication.
When grinding the radial force is very large. This causes system of machine tool, grinding wheel, workpiece elastic, the actual cutting depth is less than nominal cutting depth. Grinding will complete, should be light not feed mill, in order to eliminate the error.
After grinding grain grinding blunt, grinding force also increase, the particle breakage or loss, to reveal the sharp edge, this feature is referred to as "self-sharpening". Since the sharpness grinding in a certain time internal energy to normal, but beyond a certain after working hours, should be artificial nap, so as to avoid vibration and noise caused by grinding force increases and damage to the workpiece surface quality.
Due to the grinding wheel grinding grain itself has the very high hardness and heat resistance, thus can grinding machining of high hardness materials, such as hardened steel, hard alloy, etc.
Grinding wheel and grinding characteristics determine the grinding process system can be uniform micro cutting, general ap = 0.001 ~ 0.005 mm; Grinding speed is very high, generally can reach 30 ~ 50 v = m/s; Grinding machine stiffness; Using hydraulic transmission, so the grinding economy to obtain high machining accuracy (IT6 ~ IT5) and small surface roughness (Ra = 0.8 ~ 0.2 microns). Grinding is one of the main ways to parts finishing.

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