Abstract
In this paper, we studied the problems about grinding of the shafts and bores with the polygonal profile sections. Grinding attachments were mounted on the lathe, and the operations were carried out with the peripheral surface of the grinding wheel (1) or the side surface of the cup-grinding wheel (2). The equations of the arc-enveloped polygonal profile (1) and the straightline-enveloped polygonal profile (2) were determined. In the arc-enveloped profile, the differences of the curve due to the variations of the diameter of grinding wheel were studied. About the interference of the profile, the relation between the dimention of wheel and radius of curvature of polygonal curve was obtained. The accuracy of the profile and the roughness of the surface were measured and compared with those of the shafts having the circular sections.
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