Cylindrical grinding and surface grinding typically utilize a single rotating “ grinding wheel ; therefore, these two methods tend to be less critical than centerless grinding. Unacceptable finishes are more a symptom of the machine condition or set-up. As long as the plastic is properly held or fixtured in place, the grinder will make sure the rotating wheel does its job. centerless grinding wheel With a centerless grinder, set up is extremely important. This type of grinder uses two rotating wheels…a grinding wheel and a “regulating” wheel. The regulating wheel is non-abrasive and is strictly used to feed the rod or tube and apply force pushing it against the grinding wheel as it passes through. Proper set-up of the centerless grinder helps to ensure proper tolerance control and consistent circularity of the finished rod or tube. In this dual wheel grinder, the wheels are located in parallel, side-by-side. The spacing between these two wheels is adjustable and determines how
