Patent Number: 6,429,397

Title: Programmable pogo welding apparatus and method

Abstract: A pogo welding apparatus especially for spot welding metal sheets at selected locations spaced away from their edges wherein the sheets are held in a temporary assembly with the selected locations engaged and separate programmable positioners move a primary (pogo) electrode and a backup electrode sequentially against opposite sides of the selected locations to spot weld the sheets at the selected locations in sequence. Various alternative programmable positioners, including robots of varying types, may be used to carry the electrodes.

Inventors: Sun; Peter C. (Rochester Hills, MI), Wang; Pei-Chung (Troy, MI), Wampler, II; Charles Weldon (Birmingham, MI), Linn; Douglas Martin (Commerce Township, MI)

Assignee: General Motors Corporation

International Classification: B23K 11/11 (20060101); B23K 009/32 ()

Expiration Date: 08/06/2019