Positioning device having static fluid bearings

Details Positioning device having static fluid bearings Positioning device having static fluid bearings

1990-11-26

1992-04-21

Bishop, Steven C.

Turning

Lathe

Having facing tool fed transverse to work

82 12, 82137, 82149, B23B 312, B23B 2100

Patent

active

051056925

ABSTRACT:
A machine tool comprising a third carriage which is guided along a circular cylindrical guide of a second carriage by means of a static fluid bearing and which can thus rotate about an axis of rotation which coincides with a centerline of the circular cylindrical guide. A working point of a tool fastened to the third carriage lies on the axis of rotation so that an angular adjustment of the tool effected by rotation of the third carriage can take place independently of a position adjustment of the working point effected by a displacement of the second carriage and a first carriage. The machine tool can be used for the processing of surfaces, in particular in the manufacture of linear and circular Fresnel lenses for projection television screens by means of a cutting tool.

REFERENCES:
patent: 2895386 (1959-07-01), Mann
patent: 3128657 (1964-04-01), Hebert
patent: 4172398 (1979-10-01), Asmanes
patent: 4417489 (1983-11-01), Liu
patent: 4552045 (1985-11-01), Inoue et al.
patent: 4698575 (1987-06-01), Bouwer
patent: 4833764 (1989-05-01), Guhring

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