Electric heating – Metal heating – For bonding with pressure
Patent
1986-12-08
1989-05-16
Shaw, Clifford C.
Electric heating
Metal heating
For bonding with pressure
219116, 219120, B23K 1110
Patent
active
048312290
ABSTRACT:
High frequency resistance spot welding structure and method. In one embodiment, the structure includes dual, mirror image welding transformers, each including a transformer secondary circuit, an endless transformer core, and a transformer primary winding wound around the transformer core. The transformer secondary circuits may be single member, U-shaped transformer secondaries with integral electrode portions. In another embodiment, one of the transformers is replaced by a pair of spaced apart welding electrodes which are connected by a conductor. Means are provided for supplying welding pressure to the transformers to move them with their associated welding electrodes during a weld sequence. A high frequency, electrical welding signal is applied to the transformer primary circuits which are synchronized when two transformers are used so that the welding currents passing through the transformer secondary circuits reinforce each other. The structure is small and light weight so as to be inexpensive, positioned immediately adjacent a weld, and moved quickly. The method of the invention includes providing the high frequency welding signal to the mirror image, closely spaced apart welding structures, synchronizing the high frequency welding signal to provide push/pull welding and providing forging pressure through the transformers or transformer to move them with their associated electrodes during spot welding.
REFERENCES:
patent: 553923 (1896-02-01), Lemp
patent: 2680180 (1954-06-01), Worden et al.
patent: 4130750 (1978-12-01), Bennett et al.
patent: 4496821 (1985-01-01), Burgher et al.
Medar Inc.
Shaw Clifford C.
LandOfFree
High frequency resistance spot welding structure and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High frequency resistance spot welding structure and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High frequency resistance spot welding structure and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2324490