Wireworking – Wire straightening
Patent
1988-10-20
1990-07-17
Combs, E. Michael
Wireworking
Wire straightening
B21F 102
Patent
active
049415166
ABSTRACT:
Method and apparatus for straightening the pins of a computer chip, logic or integrated circuit, or other type of semiconductor device having a pin grid array (16). The apparatus includes a rotating turret (28) for positioning the pin grid array (16) at a plurality of stations (20) and (22) for performing a series of straightening operations to the pins (18) at each station, first and second rakes (110) and (110.sup.2), each of the rakes (110 and 110.sup.2) having a plurality of tines (112) extending therefrom for insertion between the pins (18) of the pin grid array (16) in first and second directions, a jig (136) having a plurality of holes (146) therein for receiving the pins (18) when the jig (136) is moved toward the wafer (40) of the pin grid array (16) to straigthen the pins (18), and appropriate controls for advancing the pin grid array (16) positioned in the turret (28) from one station to another and controlling the insertion of the tines (112) of the first and second rakes (110) and (110.sup.2), the raising and lowering of the rakes (110) and (110.sup.2) and the jig (136), and activating the mechanisms for loading and unloading the pin grid array (16) into the turret (28). The method includes the steps of raking the pins (18) of the pin grid array (16) in a first direction, raking the pins (18) in a second direction, and then finely straightening the pins (18) by moving a jig (136) having a plurality of holes (146) therein for receiving the pins (18) toward the wafer (40).
REFERENCES:
patent: 3225797 (1965-12-01), Stoody
patent: 3344816 (1967-10-01), Zemek
patent: 3520336 (1970-07-01), Zemek
patent: 3525372 (1970-08-01), Haven
patent: 3687172 (1972-08-01), Suverkropp
patent: 3857420 (1974-12-01), Newman
patent: 4094410 (1978-06-01), Fegley et al.
patent: 4643234 (1987-02-01), Alemanni
patent: 4691747 (1987-09-01), Sokolovsky
patent: 4789011 (1988-12-01), Moloney
2,187,123 A, U.K. Patent Application; pub. Sep. 3, 1987, inventor-Othmar Horat (4 sheet drwg and 4 page spec.).
IBM Technical Disclosure Bulletin, vol. 22, No. 3, Aug. 1979, pp. 1102, "Precision Pin Straightening Comb" by Cioffi, Jr. et al.
LandOfFree
Method and apparatus for straightening the pins of a pin grid ar does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for straightening the pins of a pin grid ar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for straightening the pins of a pin grid ar will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-90696