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Method of manufacturing composite grinding wheel

  • US 4,523,930 A
  • Filed: 08/06/1984
  • Issued: 06/18/1985
  • Est. Priority Date: 08/06/1984
  • Status: Expired due to Term
First Claim
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1. The method of making a composite grinding wheel having an annulus forming a support member, the annulus having a groove surrounding its periphery, said groove being defined by side walls and having an inner and outer periphery and being adapted to receive and be bonded to the grinding medium, said annulus including a shoulder around its periphery for defining a floor and one wall of said groove, and said composite wheel including a ring element adapted to be assembled over said shoulder and bonded to said annulus to complete said composite wheel comprising the steps of:

  • supporting said annulus and said ring in spaced apart but concentric relationship;

    fitting a plurality of mold components together with said spaced apart annulus and ring elements to form a mold cavity that defines the outer periphery of said groove and is concentric with said inner periphery;

    filling said cavity with unbonded grinding medium;

    cold pressing said annulus and ring together and compacting said grinding medium while moving said shoulder and said ring elements into a concentric juxtaposed position; and

    sinter bonding said cold pressed grinding medium; and

    then stripping said mold components from the assembled bonded grinding medium, shoulder, and ring element that has been bonded to said shoulder.

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