More about Double Disc Grinding

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According to Thomas Net:

“Double disc grinding is an abrasive machining process that removes material from two sides of a part simultaneously. In a typical double disc grinding machine, the grinding discs are side-mounted on a pair of opposed spindles. Because the process grinds both sides at the same time, it offers a high degree of accuracy and parallelism and reduces stress on the part. The process is suitable for a wide range of materials, including stainless steel, sintered metal parts and high-strength alloys.

“Double disc grinders are primarily defined by the method used to feed parts through the grinding wheels. Manual feed is used occasionally, though more often with single disc grinders. Manual feeding does not offer a high level of precision, but it allows an operator to quickly machine a flat surface with little setup time. Thrufeed grinding is much more widely used in double disc grinding and involves automatic feeding of components into one side of the grinder. A series of guides aligns the part for proper movement through the grinding discs, after which the part is driven through the discs, where it is machined. The rotary feeding method incorporates a rotary feeding table that automatically feeds parts into work-holding devices and through the grinding wheels. The parts are then unloaded after they have been machined. Other types of double disc grinding machines include chain hold down grinders, gun feed grinders and reciprocating grinders.

“A wide assortment of parts is machined on double disc grinders, such as stampings, die castings, blankings, rings and valves. The process is used extensively in the manufacture of automotive components, such as bearings, brake pads and engine parts. It best serves high-volume operations that demand close tolerances, as it generally becomes more cost efficient as the size of the production runs increases. On aluminum, the process can achieve surface finishes as high as 16 Ra.”

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