Welding positioner is a large-scale welding equipment mainly used for welding circumferential seams. So far, welding positioner is a relatively young product. Due to the varying levels of development among manufacturing industries today, many companies have not yet equipped their welding stations with welding positioners. And the research in this area is not very in-depth either.

  master degree of freedom

To a certain extent, if a welding positioner only performs linear motion, even if it is three-dimensional, it cannot change the shape of the weld seam. This means that the displacement motion is a rotational motion, which is referred to as the main degree of freedom of the displacement machine. Now let's make this assumption: in the X, Y, Z Cartesian coordinate system, there is a spatial linear weld seam that can rotate within a range of 360 ° around the Z axis, and this Z axis, together with the weld seam, can rotate within a range of ≥ 180 ° around the X (or Y) axis. Therefore, the modified weld seam can be moved to the ship corner welding position for welding operations. In other words, a weld joint is composed of two collinear surfaces MN and an angle α. Within the above two rotation ranges, with appropriate rotation, the collinear surfaces MN can be made parallel to the horizontal plane, and the angles between these two surfaces and the horizontal plane are equal, each being α/2, which becomes the ship angle welding position. This sentence means that any complex welded component can meet the requirements of ship welding as long as it is installed on a welding positioner with main degrees of freedom of one and a half rotations. We refer to this dual rotary welding positioner as a functional positioner.

Variable degrees of freedom

Some also involve users' concepts of equipment and equipment, and considering the different uses for handle welding and automatic welding, when selecting and designing a welding positioner, in addition to the main variable degrees of freedom, it is also necessary to consider adding some auxiliary variable degrees of freedom.

In addition, for some welded parts, due to the simple distribution of welds, only one degree of rotational freedom can solve the ship welding requirements for most and important welds in the welded parts. For the remaining small number of non important welds, although ship corner welding cannot be implemented, flat corner welding can be implemented. In this way, to simplify the equipment cost, it is considered to use a single degree of freedom or functionally degraded welding positioner, namely a single rotary positioner, in the process. According to usage requirements, auxiliary degrees of freedom can also be increased. For example, lift type and tailstock mobile type, etc.

Some workstation positioners have certain degrees of freedom that are unrelated to welding, in order to meet the process requirements of welding workstations. From the perspective of workstation design and stability, two or more welding positioners are combined for design, resulting in various workstation transformations and combined multi degree of freedom welding positioners products.

For more information, please consult our customer service staff at Shanghai Jinfande Intelligent Technology Co., Ltd!