Workhead with workpart chuck and workpart fluid bearing

Details Workhead with workpart chuck and workpart fluid bearing Workhead with workpart chuck and workpart fluid bearing

1987-09-04

1990-01-02

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51227R, 51238S, 82164, B27B 316

Patent

active

048904244

ABSTRACT:
The workhead includes a spindle disposed on a base member and rotatable about a rotational axis. The spindle includes a chuck for fixedly clamping one end of an elongated workpart, such as a valve lifter body, having a bore between opposite ends with the longitudinal axis of the bore substantially coaxial with the rotational axis. A fluid bearing such as a hydrostatic bearing is disposed on the base member adjacent the other end of the workpart for providing pressurized fluid at sufficient locations around the other end to resist machining forces tending to deflect the other end off axis relative to the fixedly clamped end during machining of the bore to improve bore roundness and straightness.

REFERENCES:
patent: 3145513 (1964-08-01), Porath
patent: 3209494 (1965-10-01), Seidel
patent: 4180894 (1980-01-01), Link

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