Stepless eccentricity adjustable rotating arc sensor

Abstract

The invention discloses a stepless eccentricity adjustable rotating arc sensor, belongs to the field of welding auxiliary devices, and aims to solve the problems of inconvenient adjustment of eccentricity, large mechanical vibration and noise and the like of the conventional rotating arc sensor. The sensor comprises a shell and a conducting rod; an eccentricity adjusting platform is arranged in the shell, and is provided with an eccentricity adjusting motor and a ball screw; a rotary platform driven by a micromotor through a gear is arranged in the eccentricity adjusting platform; a hinge is formed between the upper end of the conducting rod and the top of the shell; the conducting rod passes through an eccentric rotor and is in hinge connection with a self aligning ball bearing; the lower end of the conducting rod is fixedly connected with a vapor protective joint of which the lower end is provided with a conducting nozzle; and a welding wire passes through the conducting rod to rotate, and can form a conducting tight movable fit with the conducting nozzle. The sensor can precisely generate rotating welding arcs with different turning radii, realizes stepless adjustment of eccentric radii, is simple in structure and stable in performance, and is a brand-new concept rotating arc sensor.

Description

Rotating arc sensor with infinitely adjustable eccentricity technical field The invention relates to a welding auxiliary device, in particular to a rotating arc sensor device whose rotation eccentric radius is adjusted by a motor. Background technique Rotate the arc sensor device to make the welding arc swing in the direction perpendicular to the welding process, and the welding torch itself or the conductive rod in the welding torch make a horizontal scanning movement. The main representative mechanisms are: one was invented by NKK Corporation of Japan in the 1980s Conductive rod cylindrical rotation mode, its structure as shown in Figure 2. It relies on the eccentricity of the lead-out hole of the welding wire 24 on the end surface of the conductive rod 1 to realize the arc rotation movement, and the eccentricity of the lead-out hole is the arc rotation radius. The other is the conical rotation mode of the conductive rod developed by the German Aachen company. As shown ...

AI Technical Summary

Problems solved by technology

In order to overcome the defects of inconvenient adjustment of the eccentricity of the existing rotating arc, easy burning of the contact tip, easy damage of the carbon brush, large mechanical vibration and noise, and complicated assembly and disassembly

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