Universal alignment fixture

Details Universal alignment fixture Universal alignment fixture

1988-10-25

1989-08-29

Echols, P. W.

Metal working

Means to assemble or disassemble

Means to assemble electrical device

29759, 198345, 1983462, 269903, B23P 1900

Patent

active

048604399

ABSTRACT:
An apparatus is configured to pick up and hold a pin grid array (PGA) and to automatically align it in that process by using the electrical lead pins themselves of the pin grid array as the indexing element for the pick up process. Included are a plurality of grippers, each of the grippers having an alignment surface for engaging from outside the rectangular perimeter of lead pins on the PGA, at least one side of the rectangular perimeter of the pins, each of the grippers having a gripper indexing surface. The apparatus also includes a base for holding the PGA and the plurality of grippers. The base has a base indexing surface for each gripper indexing surface, the base having a spring element for pulling on each of the grippers so as to bring each of the gripper indexing surfaces into juxtaposition with its respective base indexing surface. Each base indexing surface is located such that when the gripper indexing surface is pulled against the base indexing surface, the alignment surface of each gripper is located at a position that would engage that side of the rectangular perimeter of the pins.

REFERENCES:
patent: 3590457 (1971-07-01), Gustetic
patent: 4320574 (1982-03-01), Harigane et al.
patent: 4521959 (1985-06-01), Sprenkle
Sorenson, W. W., Western Electric Technical Digest, No. 46, p. 31, Apr., 1977.

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