A motion control method suitable for automatic welding of complex curve devices

Abstract

The invention discloses a motion control method suitable for automatic welding of a complex curve device. The motion control method comprises the following steps: a three-dimensional motion control card is plugged in a PCI bus interface of an upper computer, and is connected with an automatic welding bench through a motor; the three dimensional spatial structure of a to-be-welded device is simulated on the upper computer; a control instruction is sent to the three-dimensional motion control card according to the three dimensional spatial structure of the to-be-welded device; the three dimensional control card controls the working state of the motor according to the control instruction; the motor controls the welding bench to conduct linkage according to the predetermined motion of the three dimensional spatial structure of the to-be-welded device; the welding bench conducts automatic welding on the to-be-welded device, and feeds back current welding coordinate to the upper computer in a real-time manner. The motion control method is suitable for welding of a complex curve path, and has the advantages that the motion control method is low in cost, flexible to control, and high in work efficiency and automation degree.

Description

Technical field [0001] The invention relates to the field of automatic processing technology, and in particular to a motion control method suitable for automatic welding of complex curve devices. Background technique [0002] As a very important manufacturing process, welding is widely used in machinery manufacturing, petrochemicals, marine ships, bridge construction, metallurgy and mining, aerospace electronic information and other industrial sectors. Today, welding has developed into an independent discipline. [0003] In recent years, with the continuous rise of automation and intelligent manufacturing in various countries, the research on the field of automatic processing has always been a research hotspot in various countries. With the development of microelectronics technology, digital signal processing technology and embedded systems related to various programming languages, the integration and reliability of the motion control card have been continuously improved, which led...

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Problems solved by technology

[0005] Manual welding has low production efficiency and low quality, and it is easy to cause defects such as spot spots, burn-through, impermeable welding, and air holes in the weld seam; the invention patent with application number 201310530045.5 discloses the existing automatic welding system, although it can improve Production efficiency, but it usually puts forward higher requirements on the control system hardware, and needs to be matched with complex software program control; and there are often processing and assembly errors in the components or workpieces to be welded, and the fixed welding trajectory given in advance is difficult to solve these problems. error, it is also difficult to adapt to the deformation caused by the welding heat process

However, the existing automatic welding control schemes often have complicated software program control and huge data information processing, which can neither guarantee the quality of automatic welding nor perform real-time control according to the current welding situation.

Most of the current automatic welding control methods are based on the image processing method of the welding arc, such as the application number 201010566521.5, the name is the invention patent of the automatic welding system and its operation method based on image recognition technology, but due to the arc light in the welding process Affected by many factors, such as welding position, welding material type, etc., the accuracy of arc image processing will be greatly reduced, and the huge image data processing also reduces the real-time control

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