Apparatus and method for manufacturing abrasive tools

Details Apparatus and method for manufacturing abrasive tools Apparatus and method for manufacturing abrasive tools

2007-05-29

2010-10-26

Rose, Robert (Department: 3727)

Abrading

Machine

Rotary tool

C451S541000, C051S293000

Reexamination Certificate

active

07819722

ABSTRACT:
A compression molding apparatus and method for the manufacture of abrasive layers for abrasive tooling which provides a compression mold space defined between an inflexible wall surface and a flexible wall surface. The apparatus and method of the present invention is particularly well suited to making annular or hollow cylindrical shaped abrasive layers of novel configurations during a single mold cycle useful for grinding wheel and the like, as well as other shapes such as laps, wherein the flexible wall expanded with fluid pressure provides a highly uniform distribution of pressure against the surface of the mold composition being formed. In an annular configuration, the flexible wall is used to radially direct pressure against a molding composition disposed in an annular configuration wherein the axial length of the annular mold shape formed may be many times greater than priorly obtained by the prior art means.

REFERENCES:
patent: 2449407 (1948-09-01), Mulholland
patent: 2557047 (1951-06-01), Goepfert et al.
patent: 2860961 (1958-11-01), Gregor et al.
patent: 1581247 (1980-12-01), None

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