Choosing the best centerless grinding wheel
Selecting the best grinding wheel for centerless grinding begins at the actual choice of the grinding wheel. The wheel itself must be suited for both the metal from which the workpiece is made from as well as the surface finish you wish to achieve when grinding. Our centerless grinding wheels come in different grain types and grit sizes, often utilizing the strongest materials in the superabrasive industry such as CDX, CBN and Diamond, all available in different diameters and widths/thicknesses. Our wheel shapes can be viewed, from this link.
There are two methods used in the centerless grinding process
The first process is through-feed grinding, which is typically used for parts with consistent roundness across the overall length of the part. During this process, the workpiece travels along the rest blade between the two wheels (regulating and grinding). A slight angle is applied to the regulating wheel, relative to the grinding wheel of course, where through-feed basically “squeezes” the workpiece across the grinding wheel and out the other side.
In-feed Grinding (also called plunge grinding)
In-feed grinding is used for grinding cylindrical parts with notches or complex shapes, such automotive parts like gear shafts. The workpiece rest blade needs to be tooled to match the shape of the part. The actual grinding occurs when the regulating wheel spins the part at one speed while pushing it toward the grinding wheel, which is then spinning at a faster speed. The greater the difference in speeds, the faster the stock removal from the workpiece.
|Thru-feed grinding||In-feed grinding