The telescopic arm type welding operation frame is also known as the column type welding operation machine, which is composed of column, cross arm feed mechanism, cross arm and traveling trolley. The trolley is equipped with a column, which can rotate around its own axis, the cross arm feeding mechanism can rise and fall along the column, and a cross arm which can move in the horizontal direction is installed in it. The submerged arc welding machine is set at one end of the cross arm. By controlling the position of cross arm, cross arm feed mechanism, column and traveling trolley, the welding machine can be sent to any place within the action range of the welding operator. Due to the large number of activities of the operator, in addition to the sufficient rigidity of each component, it is also necessary to ensure the accuracy of the processing and assembly of the welding automation equipment, which usually integrates a variety of technologies such as welding process, automatic control (including PLC and stepping motor control), precision machinery design and manufacturing. With the increasing development and wide application of automation, intelligence, digitization and other technologies, Welding automation is developing from single machine welding automation equipment to welding automation production line and digital welding workshop.

Reliability principle: because of the complexity of mechanism and many links, the reliability of robot manipulator is particularly important. Generally speaking, the reliability of components should be higher than that of components, while the reliability of components should be higher than that of the whole machine. The reliability of parts or structures can be designed by probability design method, and the reliability of welding operator system can also be evaluated by system reliability synthesis method. Due to the high performance of high-strength steel plate, there are very high requirements for welding equipment, welding materials and cutting and welding technology, especially for the first pass rate of cutting and welding, otherwise the weld quality is difficult to guarantee CNC precision cutting and computer programming nesting technology have been applied. Advanced and efficient new processes, such as CO2 gas and rich argon gas shielded welding or submerged arc welding, are widely used. In machine tool industry, the development of welding technology is developed with the application of welding structure of machine tool products. Metal cutting machine tools, forging machinery and casting machinery products are the main fields of welding technology application in machine tool industry. X-ray inspection and ultrasonic nondestructive inspection are widely used to stabilize the internal quality of the weld. The new technology of vibration aging is extended to reduce and homogenize the residual stress of welding structure, reduce the deformation of welding parts and stabilize the accuracy. Modularization. Modularization and integration make the expansion of system functions very convenient, realize the large-scale mass production of personalized products, reduce costs and shorten delivery time. Networking. The development of modern network technology, such as intelligent interface and remote communication, promotes the development of integrated management and control technology of welding automation equipment.