Precision centering device

Details Precision centering device Precision centering device

1977-12-12

1979-11-20

Weidenfeld, Gil

Chucks or sockets

With fluid-pressure actuator

Socket type

279 3, 279112, 269 21, 269111, B23B 3116

Patent

active

041748476

ABSTRACT:
A precision centering device with a pair of relatively movable plates forming a guideway for four relatively movable guides. A tapered centering port having a rectangular profile is formed by the guides which are constrained for mutual coacting movement by the plates. The relative positions of the movable plates define the geometric shape of the centering port and the relative locations of the guides determine the size of the centering port. A reciprocating collet configured to carry a semiconductor chip is received within the centering port at the center thereof. As the collet moves downwardly, the chip is guided through the tapered port and is centered on the collet.

REFERENCES:
patent: 933071 (1909-09-01), Helman
patent: 2940764 (1960-06-01), Krantz
patent: 3167326 (1965-01-01), Heessels
patent: 3460822 (1969-08-01), Link

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