Method of determining deterioration of pressurizing...

Details Method of determining deterioration of pressurizing... Method of determining deterioration of pressurizing...

2008-07-01

2009-10-13

Caputo, Lisa M (Department: 2855)

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

Reexamination Certificate

active

07600435

ABSTRACT:
A method of determining deterioration of pressurizing performance of a spot welding, the method having: obtaining reference data that reflect a dynamic state of a servo motor in a case where a movable side electrode tip is operated normally and a wok piece is pressurized by a specified pressurizing force; performing data processing on the reference data to extract a reference characteristic value; obtaining diagnostic data that reflect a dynamic state of the servo motor in a case where a operational state of the movable side electrode tip changes and the work piece is no longer pressurized by a specified pressurizing force; performing data processing on the diagnostic data to extract a diagnostic characteristic value; and determining deterioration of pressurizing performance of the spot welding gun based on the reference characteristic value and the diagnostic characteristic value.

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