Apparatus for mechanical positioning

Details Apparatus for mechanical positioning Apparatus for mechanical positioning

1991-10-21

1993-06-01

Watson, Robert C.

Work holders

Holder mounted for movement

Including means to shift holder position

269181, 269303, 269285, B23Q 300

Patent

active

052152960

ABSTRACT:
Method and apparatus for the fixturing and positioning of objects such as workpieces or lenses in a repeatably presettable position relative to, for example, a cutting tool or other optical components includes a fixed base (40), a carriage (20) and a lead screw (30) rotatable with respect to the fixed base. The carriage (20) translates relative to the base and moves objects attached to it. The exact position of the carriage is indexed by first pressing a button (80A) to release an inside threaded concave cylindrical clamping piece (64) between the carriage and the lead screw and manually moving the carriage (20) to a desired location dictated by a scale (42A, 42B) on the fixed base (40) to relocate to a course number of thread pitch spacings. Once relocated the button (80A) is released, the carriage (20) is again clamped to the lead screw and the carriage finally incremented into a more accurate fine position with respect to the scale (42A, 42B) by an indexed rotation of a lead screw thumb screw (32) with respect to the scale.

REFERENCES:
patent: 1234606 (1917-07-01), Benedict
patent: 2576340 (1951-11-01), Hammond
patent: 4013280 (1977-03-01), Chitayat et al.
patent: 4787794 (1988-11-01), Guthrie
patent: 4793604 (1988-12-01), Taylor
patent: 4936722 (1990-06-01), Schwinn

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