Methods of straightening backplane-supported pins

Details Methods of straightening backplane-supported pins Methods of straightening backplane-supported pins

1980-02-26

1982-07-20

Desmond, Eugene F.

Wireworking

Wire straightening

B21F 102

Patent

active

043400949

ABSTRACT:
A plurality of pins (21) supported by a backplane (22) are initially processed through a straightening operation within a pin straightening apparatus (23) while using a preselected straightening amplitude. The centroids of a statistical sample of the pins (21) are then measured to obtain a measure of pin deviation from nominal. The measured data is then processed by a computer (48) to determine statistical values for mean deviation from nominal and standard deviation. Using the statistical values, a determination is made as to whether another straightening operation is required. If another operation is required, a modified straightening amplitude is determined by using the statistical values and is established within the pin straightening apparatus (23). The pins are then processed through the second straightening operation using the modified straightening amplitude.

REFERENCES:
patent: 3603357 (1971-09-01), Drummond
patent: 3700011 (1972-10-01), Walter
patent: 3730234 (1973-05-01), Hasselmann
patent: 3742987 (1973-07-01), Tarbox et al.
patent: 3779291 (1973-12-01), Yeo
patent: 3903937 (1975-09-01), Drummond

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