Rolling tool for annular workpieces avoiding edge pressure - comprises radii of curvature of concave support surfaces of exceeding radii of curvature of convex profiles of support rolls, for bearing mfr.

摘要

The tool comprises a) the rolling mandrel (1) outside the profiled middle part (2) with concave surfaces (7, 8) acting as the contact areas between the rolling mandrel (1) and support rolls (5, 6) having convex surfaces (9, 10); b) the radius of the concave surfaces (7, 8) of the rolling mandrel (1) larger than the radius of the convex surfaces (9, 10) of the support rolls (5, 6); and c) the support rolls (5, 6) arranged so the inner curved surfaces bear against the profiled middle piece (2) of the rolling mandrel (1), or the support surfaces of the rolling mandrel are concave only adjacent to the profiled middle piece. USE/ADVANTAGE - Used in rolling bearing mfr. It eliminates the problem of edge pressure due to a deflection of the rolling mandrel.