Combination fixtures, also known as flexible combination fixtures, are divided into machine tool combination fixtures and welding combination fixtures. When in use, suitable components and parts can be selected according to the processing requirements of the workpiece, and assembled into various specialized fixtures in a building block manner, called flexible combination fixtures.

The main functions of using 3D flexible welding fixtures are as follows:

(1) Accurate and reliable positioning and clamping can reduce or even eliminate cutting and marking work. Reducing the dimensional deviation of the product has improved the accuracy and replaceability of the parts.

(2) Preventing and reducing welding deformation.

(3) Place the workpiece in the optimal welding position, improve the formability of the weld seam, significantly reduce process defects, and increase welding speed.

(4) The use of mechanical devices has replaced the heavy work of positioning, clamping, and workpiece flipping during manual assembly of parts, improving the working conditions for workers.

(5) The scope of application of expandable process methods, the comprehensive development of mechanization and automation in the production of welding structures.