Mounting plate for rotary granite polishing disc - has fixed and removable profiled half rings retaining dovetail grooved disc

摘要

The mounting plate (1, 2) for a rotary grinding disc (3) has a fixed (4) and a demountable (5) half ring retaining the dovetail grooved (8) disc haunch. The detail is partic. for deployment on granite polishing power grinders. The demountable half-ring (5) is fixed in position (11, 12) by a radial screw. The mounting plate (2) may have a circumferential groove (6) in the edge face. The groove (6) may be of uniform rectangular section and is engaged by a continuous reciprocally shaped flange (7) which projects from the demountable half ring (5). Above the flange half-ring may form a half dovetail (10) in cross-section. The dovetail (10) secures the disc by engaging a reciprocal triangular groove (8) on the disc (3) haunch (13) periphery.