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Photoelectric sensor type welding seam automatic tracing control method

A photoelectric sensor and automatic tracking technology, applied in arc welding equipment, manufacturing tools, welding equipment, etc., can solve the problems of high cost, complex control system and calculation process, and achieve strong practicability, simplified calculation process and circuit structure, The effect of high system tracking accuracy

Inactive Publication Date: 2004-07-21
XIANGTAN UNIV
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AI Technical Summary

Problems solved by technology

At present, the weld seam tracking sensor commonly used is an optical sensor. Among the weld seam tracking systems using optical sensors, one is to obtain weld position information through structured light three-dimensional vision sensors to realize automatic seam tracking, and the other is to use CCD The charge-coupled sensor is used to detect the shape and position of the groove to control the tracking. Although the precision of these two welding seam automatic tracking control methods is high, the control system and calculation process of these two methods are very complicated and costly.

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  • Photoelectric sensor type welding seam automatic tracing control method
  • Photoelectric sensor type welding seam automatic tracing control method
  • Photoelectric sensor type welding seam automatic tracing control method

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Embodiment Construction

[0013] Depend on Figure 1 to Figure 2 It can be seen that the method of the present invention is to use the white line drawn on one side of the workpiece joint with a width of 2 to 4 mm as the tracking detection object. Its photoelectric sensor is composed of ordinary small electric beads, photosensitive transistor, photoelectric element screen, convex lens and concave lens, etc. The light source forms a rectangular light spot on the workpiece through the concave lens, and the light spot forms an enlarged light spot on the photoelectric element screen through the concave lens and convex lens. Reflective light spot: Three phototransistors are installed side by side on the photoelectric element screen, which are left photosensitive tube DL, middle photosensitive tube DM and right photosensitive tube DR. When the white line on the workpiece is at the center of the light spot, the middle photosensitive tube DM receives the most light. Strong, the output signal UM of the middle ph...

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Abstract

An automatic welded seam tracking and controlling method of photoelectric sensor mode features that the ordinary light source is used for photoelectric sensors which are left, middle and right photosensitive transistors parallelly installed on screen, the error signal generated by said photoelectric sensors is sequentially passed through operating comparator, amplifying-isolating-shaping circuit, signal converter, decoder, waveform generator and driver of torch motor. Its advantages are high accuracy, simple calculation and structure, and low cost.

Description

Technical field [0001] The invention relates to a welding technology, in particular to a control method for automatic welding seam tracking in the welding technology. Background technique [0002] The main problem to be solved by the welding process automatic control system is the automatic seam tracking. At present, the weld seam tracking sensor commonly used is an optical sensor. In the weld seam tracking system using an optical sensor, one is to obtain weld position information through a structured light three-dimensional vision sensor to realize automatic seam tracking, and the other is to use a CCD The charge-coupled sensor is used to detect the shape and position of the groove to control the tracking. Although the accuracy of these two automatic seam tracking control methods is high, the control system and calculation process of these two methods are very complicated and costly. [0003] The photoelectric sensor type arc tracking deviation detection method is currentl...

Claims

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Application Information

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IPC IPC(8): B23K9/127
Inventor 洪波尹懿黄俊屈岳波袁灿涂海湘
Owner XIANGTAN UNIV
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