Butt welding machine and its fixture device

Abstract

The invention relates to a butt welding machine. The butt welding machine comprises a machine table, a fixture device and a welding machine, wherein the fixture device and the welding machine are arranged on the machine table; the fixture device comprises a first chuck device, a second chuck device, at least one bias device and a chuck opening and closing mechanism; the bias device is connected between the machine table and the corresponding chuck device, so as to apply the bias onto the corresponding chuck device to the other chuck device; the chuck opening and closing mechanism comprises a rotary body, and the rotary body is connected with at least one of the first chuck device and the second chuck device; the rotary body can be rotated between an opening extreme position and a butting extreme position, so as to drive the first chuck device and the second chuck device to relatively move; the distance between the first chuck device and the second chuck device in the opening extreme position along the axial direction is maximum, and the distance between the first chuck device and the second chuck device in the butting extreme position along the axial direction is minimum.

Description

technical field [0001] The invention relates to a welding fixture, in particular to a butt welding machine and its fixture device. Background technique [0002] The butt welding machine realizes the butt joint and welding of two workpieces. Butting and welding taps and spring steel bars is one application. [0003] Manufacturers of standard parts need to use high-precision taps in the process of manufacturing nuts. The taps need to be welded on a 90-degree bent spring steel bar with the same diameter, so as to realize automatic batch tapping and butt joint coaxial The precision requirement is less than or equal to 0.1mm. [0004] There are two ways of butt welding existing taps and spring steel: [0005] 1. After manually aligning with a simple fixture, heat the jointed position with an oxyacetylene flame, and fill in the copper welding wire to connect after reaching a certain temperature. The disadvantages of this connection: first, the fixture is simple, and the coaxia...

AI Technical Summary

Problems solved by technology

The disadvantages of this connection: first, the fixture is simple, and the coaxiality cannot be guaranteed; second, the welding quality of artificial flame brazing is unstable, and skilled workers are needed; third, the heat-affected zone of the flame is large, which will reduce the service life of the tap

The disadvantage of this connection is also that the coaxiality cannot be guaranteed. When the tap is disconnected during use after the welding electrode is repaired, it will not be disconnected at the docking point, but at the tap end near the interface. Irregularity, secondary reconnection cannot be performed, and when the tap needs to be separated from the spring steel after the service life is reached, a part of the spring steel needs to be cut off, so the spring steel also needs to be replaced frequently

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