Workpiece centerless support device for use in internal grinding

Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool

Patent

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Details

51103R, 51103WH, B25B 500

Patent

active

045862958

ABSTRACT:
In the internal grinding machine intended to perform the concentric bore processing, rotatably supporting the workpiece of which bore is processed in the previous processing step, a workpiece centerless support device for use in the internal grinding machine, comprises of an internal shoe which penetrates the internal bore of the workpiece and contacts with two points internally thereof so as to rotatably support the workpiece; a couple of drive rolls arranged on both side portion of the internal shoe; a couple of spring means which energizes each drive rolls toward the circumference of the workpiece and of which spring pressure is determined in alternatively differential rate so that the contacting location against the internal shoe of the workpiece is always preserved in the side of two contact points; a pusher plate which is inserted from end portion of the workpiece to surround the circumference of the workpiece; an outlet of coolant which is provided on the pusher plate in a manner of being opposed to the other surface of the workpiece.

REFERENCES:
patent: 2716311 (1955-08-01), Berstecher

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