Multiple-compliant-bristle, self-centering self-sizing rotary abrasive hone

Claim 1

A multiple-compliant-bristle, self-centering rotary abrasive brush means having enlarged, abrasively coated, outer bristle tip ends of multi-phase material, comprising: a plurality of outwardly directed, flexible, plastic inwardly effectively compressible, elastically bendable bristles mounted in a substantially radially and cylindrically arranged array thereof and provided with and carried by a bristle-mounting base means, each of said bristles being formed of flexible, resiliently elastically bendable, compliant non-metallic plastic material having corresponding exteriorly completely uncoated, flexible, compliant shaft portions made of said plastic material and having a free outer end of said plastic material positioned with respect to the corresponding outer ends of the other bristles in a substantially cylIndrically oriented array thereof and there being provided with and being coated with outer coating means effectively defining an enlarged abrasive globule carried thereby and effectively forming an outer terminus of composite multiphase material comprising the bristle tip end and said enlarged abrasive globule, said enlarged abrasive globule comprising a particulate abrasive material and a wear-attritionable, hardenable and curable plastic resin bonding material for effectively bonding the particulate abrasive material into a globule-like assembled formation of a non-flaking, wearattritionable nature, the outer tip end of each of said bristles carrying a corresponding one of said enlarged abrasive globules being effectively provided on its plastic outer surface and inwardly of said wear-attritionable plastic resin bonding material in an effectively intervening position therebetween with a junction-facilitating, effective bonding surface means having a great junction affinity for the exterior surface of said outer tip end of each such bristle and having a great junction affinity for the inner surface of said wear-attritionable bonding material and thereby functioning as an effective intervening joining bridge means between the surface of the outer tip end of each such bristle and the inner surface of the corresponding wearattritionable bonding material and of greater junction strength than either of the plastic materials effectively joined together in a bridging manner by said junction-facilitating, effective bonding surface means whereby to positively prevent flaking away of pieces of substantial size of the abrasive globule during hard honing, abrading usage thereof against a workpiece surface, comprising an inner surface of substantially cylindrical configuration, which is harder than said wear-attritionable bonding material and softer than said particulate abrasive material; said effective bonding surface means comprising a junction-adhesive material having strongly adhesive junction characteristics insofar as the outer bristle tip ends formed of said flexible resilient plastic material are concerned and having strongly adhesive junction characteristics insofar as said wearattritionable plastic resin bonding material is concerned; each of said enlarged abrasive globules being carried by the radially, substantially cylindrically arranged array of bristles so as to position the plurality of abrasive globules in an annularly cylindrically arranged array thereof with each inner portion of each bristle inwardly of the outer abrasive globule means comprising a major portion of the length of said bristle being substantially entirely free of said outer coating means comprising said abrasive material and said bonding material and also being substantially entirely free of said junctionfacilitating, effective bonding surface means whereby to have substantially unaltered, free flexibility and compliance characteristics forming an inwardly deflectable and, thus, effectively self-sizing and self-centering, multiple-compliantbristle rotary abrasive flexible hone for effectively honing a substantially cylindrical workpiece surface.