초록 ▼

A wheel hub is provided for use in combination with conventional depressed center grinding wheels. The hub includes a generally cylindrical aperture bushing. A disc shaped flange extends radially from a medial portion of the bushing and terminates at a peripheral lip. The bushing is adapted to exten

A wheel hub is provided for use in combination with conventional depressed center grinding wheels. The hub includes a generally cylindrical aperture bushing. A disc shaped flange extends radially from a medial portion of the bushing and terminates at a peripheral lip. The bushing is adapted to extend through a central bore of the wheel so that the lip engages the backing face of the wheel proximate an outermost circumference of the depressed center. A grinding face end of the bushing is flangeable radially outward to engage the front grinding face of the wheel and mechanically capture the wheel between the grinding face end and the flange. The flange, lip and backing face form a cavity into which epoxy resin is placed to chemically bond the hub to the wheel. The combination of mechanical fastening and chemical bonding adequately secures the hub to the wheel, nominally without requiring the flange to extend over the stub. The present invention thus advantageously enables the wheel to be ground nominally to the stub, to provide improved wheel utilization.

대표청구항 ▼

[ I claim:] [1.] A grinding wheel hub for mounting an abrasive grinding wheel having a depressed center on a grinding apparatus, the abrasive grinding wheel having a grinding face and a backing face disposed on opposite sides of the abrasive grinding wheel, and a substantially flat, depressed center

[ I claim:] [1.] A grinding wheel hub for mounting an abrasive grinding wheel having a depressed center on a grinding apparatus, the abrasive grinding wheel having a grinding face and a backing face disposed on opposite sides of the abrasive grinding wheel, and a substantially flat, depressed center, having a mounting aperture being disposed centrally within the depressed center; said grinding wheel hub comprising:an aperture bushing of substantially cylindrical configuration, adapted for co-axial extension through and engagement with the surface of the mounting aperture;a grinding face fastener disposed on said aperture bushing and adapted to engage the grinding face of the wheel;a backing flange extending substantially radially outward from said aperture bushing member, and adapted for superposed alignment with the backing face;an annular engagement surface disposed along a periphery of said backing flange, and adapted to engage the backing face of the wheel; rein said backing flange has a substantially concave surface adapted to face the backing face; andsaid annular engagement surface is adapted to engage the backing face of the wheel proximate an outermost circumference of the depressed center of the wheel.