Welding positioner is mainly used in the manufacturing industry, mainly in some construction machinery, which is used more frequently. It is mainly used for circumferential welding and can be used with other machines. It can be applied in a wide range of fields and has good welding performance. With the increasing demand for welding, there are many different types of welding, and there are more and more models. So how to choose the model? Let's have a look.

1、工件适用原则由于建筑机械不同结构间的外形差异大，焊接时的变位需求也不同，因此根据焊接结构的结构特点和焊接要求，选择适用的焊接变位机。

1. Due to the great difference in shape between different structures of construction machinery and the different displacement requirements during welding, the applicable welding positioner is selected according to the structural characteristics and welding requirements of the welding structure.

2、方便的焊接原则根据手动焊接作业情况，选择的变位机应将被焊工件的任一焊接移动到平焊或船焊位置，避免立焊和背焊，保证焊接质量。

2. Convenient welding principle: according to the manual welding operation, the selected positioner shall move any welding of the welded parts to the flat welding or ship welding position, so as to avoid vertical welding and back welding and ensure the welding quality.

3、可选变位机进行环焊时，应根据焊接物的坡口考虑转速，该速度应在变位机转速调节的范围内，并对工作台运行上的稳定要求，是否能满足整个工艺的加工要求。

3. When the positioner is selected for ring welding, the rotation speed should be considered according to the groove of the weldment. The speed should be within the range of the rotation speed of the positioner, and the stability requirements on the operation of the worktable, whether it can meet the processing requirements of the whole process.

4、如果变位机的焊接物整体的外廓上的尺寸比较大，则考虑到工作台的倾斜，或倾斜的角度能够满足焊接物的焊接位置等，或者在倾斜的角度与焊接物发生接触的情况下，在选择工作台时，距地面的间隙变得更大，保证焊接整体的加工要求。

4. If the overall size of the positioner's weldment is large, then considering the tilt of the worktable, or the tilt angle can meet the welding position of the weldment, or in the case of the tilt angle contacting with the weldment, when selecting the worktable, the gap from the ground becomes larger, so as to ensure the processing requirements of the whole welding.

5、易操作原则可靠，开放性好，操作高度低，选择紧凑的焊接变位机，便于工人操作和变位机的配置。如果焊接构造物的变位机的焊接作业高度高，作业者可以用垫子焊接，也可以通过安装液压升降台进行高度位置调节。

5. Easy to operate principle, safe and reliable, good openness, low operating height, select compact welding positioner, easy for workers to operate and positioner configuration. If the welding height of the positioner of the welding structure is high, the operator can weld with a cushion, or adjust the height and position by installing a hydraulic lifting platform.

以上就是焊接变位机在选择机型时应该考虑的因素，根据不同的需求进行选择，就能较大化的发挥好机器的性能，手动焊接时要考虑到现场的施工情况，结合自己的情况进行选择，才能保证施工过程的顺利进行。

The above are the factors that should be considered when selecting the welding positioner. According to different needs, the performance of the machine can be brought into full play. When manual welding, the construction situation on site should be taken into account, and the selection should be made in combination with one's own situation, so as to ensure the smooth progress of the construction process.