Electrode core for point welding machine

Abstract

The invention discloses an electrode core for a point welding machine, and belongs to the technical field of electrode equipment. The electrode core for the point welding machine comprises a first oblate cylinder part, a circular truncated cone part, a long cylinder part, a second oblate cylinder part and an electrode tip which are sequentially arranged. The electrode core is characterized in that a fillet is arranged between a top plate of the long cylinder part and the side wall of the long cylinder part; the radius R of the fillet is 3.5 mm; the diameter of a lower base of the circular truncated cone part is equal to the diameter of the first oblate cylinder part; the diameter of an upper base of the circular truncated cone part is equal to the diameter of the long cylinder part; the diameter of the second oblate cylinder part is smaller than the diameter of the long cylinder part; the diameter of the bottom of the electrode tip is smaller than the diameter of the second oblate cylinder part; the diameter of the electrode tip is gradually decreased from the second oblate cylinder part to the tail end of the electrode tip; and the diameter of the first oblate cylinder part is 15 mm, and the height of the electrode core is 35 mm. The electrode core is longer in service life, high in welding accuracy and low in part rejection rate, and cost is reduced.

Description

technical field [0001] The invention relates to an electrode core for a spot welding machine, which belongs to the technical field of welding equipment. Background technique [0002] The upper electrode used in the existing spot welding machine includes a motor base and a motor core, the electrode base is a hollow structure, and an electrode core is arranged in the electrode base. The motor base is provided with a water inlet and a water outlet, and the water inlet and the water outlet are respectively connected to the water inlet device and the water outlet device through pipelines. [0003] According to the existing production process, the 181 / 182A Superb NF front longitudinal beam sealing plate assembly will cause the nut to be easily welded to deviation and large spatter during the production process, resulting in a low pass rate of the parts, and the production quality efficiency needs to be improved. When welding 5Q0.804.181A / 182A nuts, new electrodes will be replaced...

AI Technical Summary

Problems solved by technology

[0003]According to the existing production process, the 181 / 182A Superb NF front longitudinal beam sealing plate assembly will cause the nut to be easily welded off during the production process, and the spatter will be large, resulting in The qualification rate of parts is low, and the production quality and efficiency need to be improved

When welding 5Q0.804.181A / 182A nuts, new electrodes will be replaced after welding 100 electrode cores. The replacement frequency is high. The production quantity in a single shift is 750 pieces, and the work efficiency is low. The number of electrode cores used in each shift is 7-8 , high scrap rate

The old electrode core is scrapped immediately, and the production cost is high

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