Grinding wheel assembly
AssigneeMachinery Brokers, Inc.
InventorJudson M. Grayston
Life of this patent
Estimating the term…
Abstract
A grinding wheel assembly having a throw-away type hub construction in which the insert member imbedded in the molded abrasive disk hub portion is provided with a plurality of circumferentially spaced grooves in the juncture between the cylindrical section and annular flange section thereof. The die cast metallic shaft engaging member is provided with mating tongues or projections shaped to engage axially within the grooves when the extremity of the cylindrical portion of the die cast member is swaged into engagement with the adjacent face of the hub portion when in assembled relation therewith.
Claims10
A grinding wheel assembly for attachment to a rotary shaft comprising in combination:
- a sheet metal member shaped to define a cylindrical section extending radially outwardly from one end of said cylindrical section,
- a wheel member having at least one operative abrasive surface and a disk-shaped central hub portion for connection with a rotating shaft,
- said hub portion being molded of moldable material with said sheet metal member embedded therein in a position such that (1) the exterior surface of said cylindrical section and the surface of the annular flange section facing the opposite end of the cylindrical section are contacted by the moldable material of the hub portion and (2) the opposite surfaces of both sections of said sheet metal member are exposed, and
- a cast metallic member including a cylindrical hub connecting portion having an exterior diameter slightly less than the interior diameter of the cylindrical section of said sheet metal member, an annular hub face engaging flange portion extending outwardly from one end of said cylindrical portion and a central shaft connecting portion extending axially from said annular flange portion having interior shaft end engaging surfaces and exterior wrench engaging surfaces,
- said sheet metal member having groove means formed therein at the juncture between the cylindrical and annular flange sections thereof, said groove means being open in an axial direction opposed to the axial direction of extent of said cylindrical section from said annular flange section,
- said cast metallic member having tongue means formed in the juncture between said cylindrical portion and said annular flange portion, said tongue means being of a size and shape to engage in mating relation within said groove means,
- said cast metallic member and said wheel member with said sheet metal member embedded therein being aligned axially and moved axially together into an assembled position wherein (1) said cylindrical portion extends through the exposed interior surface of said cylindrical section outwardly of one face of said hub portion, (2) said flange portion is disposed in adjacent relation to the exposed surface of said annular flange section and the opposite face of said hub portion, and (3) said tongue means is engaged in mating relation within said groove means,
- the extremity of said cylindrical portion of said cast metallic member extending outwardly of said one hub portion face being deformed annularly outwardly into axially inwardly engaged relation to said one hub portion face to fixedly retain said cast metallic member and said wheel member with said sheet metal member embedded therein in said assembled position.
Dependencies are inferred from the claim text.