Metal fusion bonding – With means to handle work or product – Including means to orient work or position work portion...
Patent
1987-05-29
1989-09-19
Seidel, Richard K.
Metal fusion bonding
With means to handle work or product
Including means to orient work or position work portion...
269 481, B23K 3704
Patent
active
048673684
ABSTRACT:
Apparatus for centering and clamping pipe workpieces to be welded to one another, which has, on both sides of a welding zone equipped with an inert-gas supply system, clamping units of which the first comprises at least one clamping device and the second at least two clamping devices. These consist of clamping grooves opening outwards in the form of a wedge and each containing a row of clamping members. Their walls are formed by annular parts movable axially relative to one another. The two outermost of these annular parts are connected releaseably to one another via a pull rod and a drive body, by means of which they can be brought closer to one another counter to a spring-force accumulator and moved away from one another again by means of the spring-force accumulator. The inner annular parts and the welding zone are arranged on a holding body. To make it possible to use the apparatus for different purposes, the inner annular parts and the welding zone can be changed over on the piston rod and on the holding body, in such a way that, in a first assembly state, the welding zone is arranged near the free end of the apparatus, the first clamping unit being located between the free end of the apparatus and the welding zone, or, in a second assembly state, the welding zone is arranged further from the free end of the apparatus, the second clamping unit being located between the free end of the apparatus and the welding zone. If there are four clamping devices altogether, there can also be a third assembly position, in which the two clamping units each comprise two claiming devices.
REFERENCES:
patent: 4405075 (1983-09-01), Roddy
patent: 4648544 (1987-03-01), Puisais et al.
Cuda Carmine
Seidel Richard K.
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