Fixture device used for inertia radial direction friction welding

Abstract

The invention relates to a fixture for inertia radial friction welding, which is characterized in that the fixture comprises a clamp (1), a positioning bearing (2) located in the radial through hole of the clamp (1), a bearing seat (3) passing through the inner hole of the positioning bearing (2), a positioning shaft (4) passing through the inner hole of the bearing seat (3), a positioning block (6) fixedly connected with the front end of the positioning shaft (4), a positioning spring (5) arranged on the positioning shaft (4), a plurality of claws (7) radial movably connected on the circumference at the front end of the clamp (1), and reset rings (8) connected movably with the axial directions of the outer surfaces of the claws (7). The invention provides an inertia radial friction welding fixture structure for welding rings with cylinders, and rings with circular pipes, which has simple and reasonable structure and convenient operation, assembly and disassembly, and can realize pre-clamping and accurate positioning at any position of circular jobs, control the welding distortion and prevent any cylindrical and tubular jobs from scuffing at the clamping position.

Description

technical field [0001] The invention relates to a special tooling device for inertia friction welding, in particular to a special tooling device for friction welding on the circumferential surface of a ring and a cylinder, or a ring and a round tube. Background technique [0002] At present, when the friction welding technology is used to realize the radial connection of cylindrical, tubular parts and ring parts, there is no special radial friction welding equipment, and the friction welding pressurization system is generally applied on the axial friction welding machine Radial pressure is achieved through special tooling to change direction. The special tooling is used to clamp ring parts, usually mainly composed of thrust part, clamping part, bearing and supporting part. The axial thrust of the main oil cylinder is transformed into radial pressure. When doing radial welding, the clamping cylinder at the moving fixture end of the original axial friction welding machine doe...

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Problems solved by technology

The problems of this kind of special tooling are: it needs to bear a large axial force, the structure is complex, and it takes time and effort to assemble and unload; and the tooling is clamped by the Morse taper, and it is always in a free state, and it is impossible to achieve any position accuracy and positioning of the ring workpiece. Pre-clamping, it is easy to make radial deformation of the pipe fittings; secondly, radial friction welding is carried out on the axial friction welding machine. When the forward movement drives the radial pressure of the claws, the slide table also moves forward accordingly, so there is a certain space at the rear end where the tooling is connected to the main shaft at the end of the moving fixture. During the welding process, the cylindrical and round tubular weldments The end of the cantilever is in a cantilever state, and the clamping torque of the rotating fixture cannot overcome the influence of the welding torque during welding, which may easily cause surface strain on the clamped cylindrical and tubular weldments

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