Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1980-05-05
1982-06-01
Whitehead, Harold D.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
74526, B24B 4900
Patent
active
043321100
ABSTRACT:
An abrasive grinding machine wherein the periphery of a rotatable grinding wheel always is returned to, and during grinding maintained at, a constant and precise workpiece grinding position irrespective of the reduction of the diameter of the wheel from wear and/or dressing. The grinding wheel is mounted rotatably on the distal end of a rockable pivot arm which, during grinding, is actuated periodically to retract the wheel from and return it to workpiece grinding position. A control mechanism, constituted by a fixed stop on the pivot arm, a moveable cam for the stop and a programmable drive motor for the cam, is operative periodically, in harmony with the reciprocable movement of the pivot arm, to adjust the cam relative to the stop to permit controlled, incremental increases in the distance over which the grinding wheel is periodically retracted from and returned to workpiece grinding position. The invention finds particular use in conjunction with dressing tools or wheels for a grinding machine. It provides for the selectively controlled, automatic and periodic dressing of a grinding wheel, to retrue its worn periphery repetitively throughout the useful life of the grinding wheel, and while the grinding machine is carrying out an abrasive grinding operation.
REFERENCES:
patent: 1659544 (1928-02-01), Dodge
patent: 2028642 (1936-01-01), Arter
patent: 3222823 (1965-12-01), Seidel
patent: 3513596 (1970-05-01), Beauchet
patent: 3959930 (1976-06-01), Hatta
patent: 4074467 (1978-02-01), Robillard
patent: 4123878 (1978-11-01), Lizotte
Weldon Hydraulics, Inc.
Whitehead Harold D.
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