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Ruiniu analyzes the application of arc sensor technology in weld seam tracking

Ruiniu analyzes the application of arc sensor technology in weld seam tracking

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  • Time of issue:2019-07-08
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(Summary description)The essence of weld tracking is to align the welding arc with the welding position so as to ensure the welding joint forming and welding quality. It detects the arc deviating from the welding seam by the sensor, and adjusts the relative position of arc and welding seam by the automatic control system to reduce the deviation until it disappears.

Ruiniu analyzes the application of arc sensor technology in weld seam tracking

(Summary description)The essence of weld tracking is to align the welding arc with the welding position so as to ensure the welding joint forming and welding quality. It detects the arc deviating from the welding seam by the sensor, and adjusts the relative position of arc and welding seam by the automatic control system to reduce the deviation until it disappears.

  • Categories:Company news
  • Author:
  • Origin:
  • Time of issue:2019-07-08
  • Views:0
Information

【 Abstract 】 : The essence of welding seam tracking is to align welding position of welding arc so as to ensure welding joint forming and welding quality. It detects arc deviation from welding seam information through sensors, and adjusts the relative position of arc and welding seam by automatic control system to reduce the deviation until it disappears.

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The essence of weld tracking is to align the welding arc with the welding position so as to ensure the welding joint forming and welding quality. It detects the arc deviating from the welding seam by the sensor, and adjusts the relative position of arc and welding seam by the automatic control system to reduce the deviation until it disappears.

According to the characteristics of the sensor, seam tracking sensor can be divided into the following several types: arc sensor, electromagnetic induction sensor, photoelectric sensor and the mechanical sensor and so on, which arc sensor as a kind of real-time sensing devices compared with other types of sensors, has a relatively simple structure, low cost and fast response characteristics, is an important developing direction of seam tracking sensor.

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Unique advantages of arc sensor:

(1) The detection point is the welding point, there is no sensor first problem, is a completely real-time sensor.

(2) As the arc itself as a sensor, so it is not affected by arc deflection caused by bending welding wire.

(3) not only can track sensing, to ensure the stability of welding parameters, but also can improve the weld forming effect.

(4) Anti-light, electromagnetic, thermal interference, long service life.

Current sensor has been widely used in electric arc welding robot system, using the arc sensing technology can real-time correction of welding path independently, in order to adapt to the changing of the weld position in the various forms of weld (V, Y, U, fillet weld) during the welding process of precise guidance welding torch to track along the seam welding, real-time monitoring, automatic correction.

Welding robot, its seam tracking system is mainly composed of arc sensor circuit board and shunt resistor. The arc sensor Circuit board A130 is plugged into the PC computer of the KUKA control cabinet, and the shunt resistors R1 and R2 are located on the side of two welding power supplies respectively. Robot in the process of welding, the shunt resistance real-time detection and signal feedback to arc sensing circuit, arc sensor circuit calculation and judgment of the detected signal, and sent to a PC computer, the signal by a PC computer for processing, transfer command signal to the robot internal shaft drive, drive control, make the robot arm to make compensation movement, adjust the welding-torch gesture, to ensure that the center line of the welding trajectory in the center of the weld groove.

The arc sensor technology of IGM welding robot is actually to judge the central position of welding seam according to the real-time detection feedback of shunt resistance to welding current change, and the welding gun makes corresponding adjustment action, so as to realize the automatic tracking of actual welding seam track.

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