The primary method for finish machining of the parallel face surfaces of flat articles (e.g., bearing rings) is simultaneous two-sided grinding. Here the grinding wheels are parallel to one another, and the allowance is removed from both faces over a very restricted portion of the grinding zone, i.e., at the entrance to it. This results in rapid and uneven grinding wheels wearing from the periphery toward the center and does not ensure the required parallelism or planarity of the workpiece faces. Moreover, high contact temperatures and hence bum marks on the surface being machined are possible at the entrance to the grinding zone.
展开▼
