Signal acquisition device of rotary electric arc sensor

Abstract

The invention discloses a signal acquisition device of a rotary electric arc sensor. The signal acquisition device uses the way of split type mounting way, and comprises an encoding disk and an encoder which is fixed on an encoder fixing cover by a screw, wherein a positioning portion protrudes from one side of the encoder facing the encoder fixing cover, the surface of the encoder fixing cover is cooperated with the positioning portion and a positioning groove is formed in a concave manner. The mounting precision of the encoder on the encoder fixing cover is high due to cooperation of the positioning portion and the positioning groove.

Description

technical field [0001] The present application relates to a rotating arc sensor, in particular to a signal acquisition device of the rotating arc sensor. Background technique [0002] Arc sensors that work in a rotating scanning manner are called rotating arc sensors. The rotating arc sensor is a special welding torch. Although its structure is more complicated than that of the swinging arc sensor, it has outstanding advantages: high-speed rotation increases the detection sensitivity of the position deviation of the welding torch and greatly improves the tracking accuracy; high-speed rotation improves the Quick response characteristics, suitable for high-speed welding and seam tracking of thin plate lapping, occupy an important position in the field of automatic control of arc welding process. [0003] The rotating arc sensor generally includes a conductive rod, a motor that drives the conductive rod to perform conical motion, an eccentric adjustment mechanism, etc. The loc...

AI Technical Summary

Problems solved by technology

[0003] The rotating arc sensor generally includes a conductive rod, a motor that drives the conductive rod to perform conical motion, an eccentric adjustment mechanism, etc. The local degree of freedom of the conductive rod to rotate around its own axis is called the rotation of the conductive rod, which will cause a gap between the conductive rod and the welding wire. The friction will greatly reduce the service life of the conductive rod, which must be limited by an anti-rotation mechanism

Since the conductive rod needs eccentric revolution, the anti-rotation stopper and the conductive rod cannot be in close contact, and a certain gap must be left, but this also causes the problem that the rotation of the conductive rod cannot be completely restrained

[0004] During the welding process, there will be an updraft from bottom to top in the water collection sleeve. At the same time, the iron vapor formed by the welding wire process, coupled with the splash during the welding process, will have a large number of small iron beads and dust entering the shell with the updraft. Seriously affect the service life of internal bearings and other components

[0005] In addition, the traditional rotating arc sensor still has technical problems such as inconvenient disassembly of the water collection sleeve, high motor transmission loss, and large mechanical vibration.

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