Method for improving pick reliability in a component...

Details Method for improving pick reliability in a component... Method for improving pick reliability in a component...

2006-05-09

2006-05-09

Noland, Thomas P. (Department: 2856)

Measuring and testing

Instrument proving or calibrating

Displacement, motion, distance, or position

C250S252100, C029S833000, C382S141000, C382S153000, C702S104000

Reexamination Certificate

active

07040137

ABSTRACT:
The present invention features a method whereby the vacuum nozzle of each extendable vacuum spindle in a multi-head component placement machine may be calibrated during component pick/place cycles. Calibration of each vacuum nozzle ensures accurate location of the vacuum nozzle over a component at a component pick station. This is particularly important with extremely small components where a slight misalignment of a vacuum nozzle with a component to be picked could result in a missed pick. Because of the vacuum nozzle inspection and calibration on the fly during the placement cycle, there is no slowdown of the placement machine cycle rate.

REFERENCES:
patent: 4875285 (1989-10-01), Haan et al.
patent: RE35027 (1995-08-01), Ragard
patent: 5539992 (1996-07-01), Woodhouse
patent: 6018865 (2000-02-01), Michael
patent: 6535291 (2003-03-01), Skunes et al.
patent: 6739036 (2004-05-01), Koike et al.
patent: 6744499 (2004-06-01), Skunes et al.

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