Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1975-05-14
1976-11-30
Smith, Al Lawrence
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51 97NC, B24B 322
Patent
active
039940993
ABSTRACT:
Apparatus for screw thread tap grinding is provided in which the tap workpiece is oscillated laterally relative to the thread grinding wheel in order to impart relief to the ground thread form of the tap workpiece. The apparatus consists of base structure mountable in a grinding machine for relative traverse of the base structure and grinding wheel and a cradle having a headstock and tailstock for receiving a tap to be ground rotatably mounted therein between centers and parallel with the axis of the grinding wheel, the cradle being pivotally mounted on the base structure for said lateral oscillation and is operated by a gear driven single lobe cam co-operating with a follower on the cradle for effecting the lateral oscillation of the cradle and tap workpiece relative to the grinding wheel. A headstock work center spindle is driven from the grinding machine by a floating center coupling in order to permit the oscillation of the cradle.
REFERENCES:
patent: 1709617 (1929-04-01), Hanson
patent: 2060438 (1936-11-01), Harley
patent: 2379287 (1945-06-01), Egleston
patent: 2388064 (1945-10-01), Markus
Coventry Gauge & Tool Company Limited
Godici Nicholas P.
Smith Al Lawrence
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