Centerless grinding is the process of removing material from the outside diameter of a workpiece using an abrasive wheel. In its simplest form, a centerless grinder consists of the machine base, grinding wheel, regulating wheel and work blade. With centerless grinding, the workpiece is not mechanically held to drive the part.
The Workpiece is located on its outside diameter and supported by the work blade which is between the regulation wheel and the grinding wheel. The regulating wheel drives the part and the grinding wheel removes the material
Mainly used for grinding tungsten carbide, ceramics , magnetic material, stainless steel bar, PCD and PCBN, etc.
1.The grinding process is essentially continuous, because the loading time, when compared to grinding between centers, is exceedingly small.
2.The work is rigidly supported directly under the grinding cut as well as for the full length of the cut. This means that no deflection takes place during the grinding operation, permitting heavier passes than grinding between centers.
3.No axial thrust is imposed on the work while grinding. The absence of end pressure makes it possible to grind long pieces of brittle materials and to grind easily distorted parts.
4.Because the error of centering is eliminated, a true floating condition exists during the grinding process. This results in less stock needed and longer wheel life / yield.
5.Large quantities of smaller size work can be automatically ground by means of a magazine, gravity chute, or hopper feeder attachments, depending on the shape of the workpiece.
※Resin bond and vitrified bond
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