The basic forms of commonly used artificial welding positioners mainly include arm type, tilting, and turning type, and double column single turning type. Due to the restriction of the degree of freedom of rotation, these welding positioners can not realize any rotation of the welder in space, so they can not make all kinds of welding joints rotate to the best position required.
Variety of welding positioner
1. Significance of welding positioner for construction machinery structural parts
Many industries in welding or assembly such as engineering, bulldozers, excavators, rollers, and other construction machinery structural parts are most complex, and the welding positioner is the main key component of the whole machine, the quality of its welding, directly affect the performance of the whole machine. Therefore, choosing the right welding positioner can completely improve the welding quality and production efficiency, reduce the labor intensity of workers and the production cost of the factory, strengthen the safety and civilized production, and is conducive to site management.
L-shaped welding positioner
2. Selection of welding positioner for structural parts
(1) according to the characteristics of welding structural parts to choose the appropriate welding positioner, such as bulldozer rear axle box, excavator X frame can be L type double rotary welding positioner, bulldozer frame can be roller frame welding positioner.
(2) According to the situation of the manual welding operation, the selected welding position function can transfer any welding seam of the welding parts to flat welding or ship welding position, avoid vertical welding and upward welding, to ensure the welding quality.
(3) According to the operation needs, choose the welding positioner with good openness, easy operation, compact structure, and small occupation area. The operation difficulty of workers can be low, safe, and reliable. Tooling design should consider the workpiece clamping simple and convenient.
L-shaped welding positioner
Although the welding robot has many degrees of freedom, in practical application, it can reach arbitrary points within the operating range to satisfy the requirements of the welding process. However, in practical operation, if the welding parts with the complex structure are not modified in time, the expected welding effect may not be achieved. At the moment, it reflects the effect of the welding positioner.
Since the welding robot cannot weld according to the set path, to ensure the welding quality and improve the production efficiency, it is generally necessary to adjust the welding seam horizontally and slowly to the appropriate orientation, such as horizontal and slow vertical welding. Therefore, it is necessary to change the orientation of the weldment in time. This is why almost all welding robots need to be equipped with a corresponding welding orientation for welding.
When welding robots and welding positioners are used together, the accuracy requirements of welding positioners are different. In addition to azimuth accuracy, synchronization coordination also requires high precision. Accuracy and motion accuracy. This is the primary difference between robot welding orientation and general welding positioner.
Welding robot is used in conjunction with welding positioner
With regard to the welding positioner, the table is generally associated with angular errors of rotation and tilting motion, and it is parallel to the radius of rotation and the tilting radius of the microscopic portion of the weld. In the actual operation process, the farther the weld is from the center of rotation and zigzag, the greater the arc error will be under the same arc error.
Generally, the positioning accuracy of welding robots is between 0.1 and 1 mm, so the positioning of welding posters should also be within this range. And the larger the weld, the farther the weld from rotation or zigzag, the higher the accuracy of the welding Angle is required.
The multi-functional special positioner is an automatic positioner developed by Wuxi Fengwei. Combined with pipe lifting support and track, the equipment can realize straight pipe + flange, short pipe + flange, flange + elbow, short pipe + elbow, and so on to support and support the pipe, adjust the pipe level, and center height.
Elevating welding positioner
A multi-function welding positioner is a kind of fixture and positioner specially designed for pipe welding production, mainly composed of frame, rotary roller, pipe pressing mechanism, positioner mechanism, electric control system, and so on. Mainly used in pipe, pipe fittings, and flange welding fixtures. It can realize 360° rotation of pipe and ±45° displacement of pipe. It can overcome certain eccentric torque of rotation to ensure continuous and stable rotation of the pipe. At the same time, it is convenient to convert the fillet weld of the flange to ship weld for welding. It is mainly used to change the welding process of butt weld or fillet weld of straight pipe + pipe fittings, which is convenient for manual or automatic welding and can meet the production requirements of seamless steel pipe and seam steel pipe.