Breeds Of Grinder Machine
There are many different types of grinder machine available which are used to obtain very close tolerances and fine finishes. Grinding machines are used for grinding flat surfaces, external and cylindrical surfaces, tapered surfaces, and irregular surfaces. Production parts are typically ground to tolerances of plus or minus 0.0001 in and special parts for precision instruments are ground to plus or minus 0.000020 in. All industrial grinding machines utilize a rotating abrasive wheel or moving belt in contact with a workpiece to remove metal.
Various combinations of wheel feed, either along or normal to the axis of wheel rotation, and also rotary or linear workpiece motion, are provided by the different breeds of grinder machine. To produce shapes of cylindrical section, workpiece and wheel both rotate on parallel axes while one or the other is fed along its own axis of rotation. Contact between workpiece and wheel is on the outside diameter of the wheel and the work is mounted between centers, chucked, or rotated without centers by a back-up wheel.
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