4) when the grinding of a large radial force. This will cause machine - wheel - a flexible work system to give way so that the actual depth of cut is less than the name of the deep cut. Therefore, grinding to be completed should not feed mill for light to eliminate errors.

     5) blunt abrasive grinding, grinding force also increased, resulting in debris or broken off, re-exposed sharp edge, this characteristic is called "sexual Rui." Since the sharp grinding to make a certain period of time to carry out normal, but more than a certain time, the manual should be repaired so as not to increase the grinding force caused by vibration, noise and damage the workpiece surface quality.

     Wheel

     Grinding wheel is the cutting tool of many small, hard abrasive and sticky binder from the porous objects. Abrasive directly responsible for cutting the work must be sharp and have high hardness, patience and a certain toughness. There are commonly used aluminum oxide, also known as abrasive corundum) and two types of silicon carbide. Type of high-alumina abrasive hardness, toughness, and for grinding steel. Type of silicon carbide abrasive hardness higher and more sharp, good thermal conductivity, but more Brittle, for grinding and cast iron carbide.

     Similarly, the abrasive wheel, because of its size, processing after the workpiece surface roughness and processing efficiency is not the same as for coarse grinding of the coarse abrasive, abrasive small for fine grinding, abrasive, the more rough, the smaller size, .

     Binder from bonded abrasives. Ceramics are commonly used binders, followed by resin binder.

     Binder finish, the impact of the wheel corrosion resistance, strength, heat resistance and toughness, and so on.

     More firmly bond abrasive, the more it is not easy from a wheel fell off, the hardness of the wheel, said that the wheel is the hardness of the surface of the abrasive wheel in the external force under the ease off. Off easily as the software and hardware called the contrary. Wheel hardness and abrasive hardness are two different concepts. Grinding the surface of the workpiece to be soft, abrasive edge of the edges and corners) is not easy to wear, so that the use of abrasive can be a longer period of time, that is optional bonding of the wheel more firmly higher hardness wheel). On the other hand, the hardness of low grinding wheel for the high hardness of workpiece.

  Wheel in the high-speed conditions, in order to ensure the safety of the installation before the inspection, there should be no defects such as cracks; order for the smooth work of the grinding wheel, the use of pre-balancing test should be carried out.

     Wheel work after a certain period of time, and its surface space debris would be blocked, the acute angle of abrasive grinding will be blunt, the original geometry of the distortion would be. Must be repaired to restore cutting ability and the correct geometry. Diamond grinding wheel required pen and carry out rectification.

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