Grinding wheel assembly

{
  "publication_number": "US4015371A",
  "country": "US",
  "kind": "A",
  "title": "Grinding wheel assembly",
  "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.",
  "claims": [
    "1. 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.",
    "2. A grinding wheel assembly as described in claim 1 wherein said wheel member is disk-like in configuration with said hub portion being offset axially with respect to the annular portion extending radially outwardly thereof, the direction of axial offset being such that said one hub face is recessed, the deformed extremity of said cylindrical portion being disposed within the recess.",
    "3. A grinding wheel assembly as described in claim 2 wherein said tongue means comprises a plurality of circumferentially spaced tongues and said groove means comprises a corresponding plurality of circumferentially spaced grooves.",
    "4. A grinding wheel assembly as described in claim 3 wherein each tongue is of generally triangular configuration and each groove is of corresponding shape.",
    "5. A grinding wheel assembly as described in claim 4 wherein said sheet metal member includes a plurality of annularly spaced openings in said annular flange section formed by deflecting portions of said annular section axially in a direction toward the opposite end of the cylindrical section thereof.",
    "6. A grinding wheel assembly as described in claim 5 wherein the interior surfaces of the annular flange portion of said cast metallic member comprise threads.",
    "7. A grinding wheel assembly as described in claim 1 wherein said tongue means comprises a plurality of circumferentially spaced tongues and said groove means comprises a corresponding plurality of circumferentially spaced grooves.",
    "8. A grinding wheel assembly as described in claim 7 wherein each tongue is of generally triangular configuration and each groove is of corresponding shape.",
    "9. A grinding wheel assembly as described in claim 1 wherein said sheet metal member includes a plurality of annularly spaced openings in said annular flange section formed by deflecting portions of said annular section axially in a direction toward the opposite end of the cylindrical section thereof.",
    "10. A grinding wheel assembly as described in claim 1 wherein the interior surfaces of the annular flange portion of said cast metallic member comprise threads."
  ],
  "description_excerpt": "This invention relates to the connection of rotatably driven members with driving shafts and more particularly to an improved grinding wheel assembly for connection with a driving shaft end.\n\nThe use of rotatably driven grinding or abrasive wheels is widespread and well known. Also well known are the problems incident to the connection of such wheels to the shaft which is utilized to drive them. It is now accepted practice in many instances to provide such wheels with an inexpensive integrally assembled hub construction configured to facilitate the attachment of the grinding wheel to the shaft end. In many instances, such grinding wheels with integral \"throw-away\" hub constructions are considered to be more efficient than the utilization of grinding wheels of the type requiring the utilization therewith of re-usable arbor parts for effecting the connection of the grinding wheel with the shaft. Basically, the throw-away assemblies are considered sufficiently advantageous from the standpoint that the time required to effectively replace a worn-out grinding wheel with a new grinding wheel is considerably reduced. Thus, grinding wheel assemblies with throw-away hub constructions are greatly preferred in situations where grinding wheels must be relatively frequently replaced.\n\nSince grinding wheels assembled with throw-away hub constructions provide for a relatively quick and effective threaded connection with the shaft (but see U.S. Pat. No.",
  "cpc": [
    "B24D 5/16"
  ],
  "ipc": [
    "B24D 5/16"
  ],
  "assignees": [
    "Machinery Brokers Inc"
  ],
  "inventors": [
    "Judson M. Grayston"
  ],
  "filing_date": "1976-04-08",
  "publication_date": "1977-04-05",
  "grant_date": "1977-04-05",
  "priority_date": "1976-04-08",
  "application_number": "US-67492676-A",
  "family_id": "24708435",
  "cited_by_count": 93,
  "citations": [
    "US2567782A",
    "US3081584A",
    "US3136100A",
    "US3210892A",
    "FR1451937A",
    "US3879178A"
  ]
}