Profile-shaped spring forming machines are specialized forming equipment for the production of various stretch springs, torsion springs and various clasp and other elastic elements. The complexity of this kind of special machine is higher than the winding compression spring coil spring machine, also known as multi-station machine. The common special machine for winding the tail hook torsion spring is the straight tail spring coiling machine. Its action adopts pinion and rack mechanism, feeding mode is reciprocating one-way feeding mechanism, coil spring form is core-wound, its pitch control depends on the vertical movement of the slider through the CAM to achieve. The cutting mechanism is also controlled by a CAM. This type of machine can only make a simple torsion spring. The domestic model is Z56-25. We can only produce torsion spring with steel wire diameter below 2.5mm.

The machine used to make the clasp, called a bending machine, takes the form of a multi-station machine. The steel wire is fed into the mold and then bent into the desired shape through a series of clamping actions. The key of this kind of machine tool lies in the design and manufacture of mould. It takes longer to adjust.

Due to the variety and shape of the spring, the spring mechanical energy is required to meet the requirements of easy adjustment and suitable for many varieties. The new special-shaped spring forming machine has been able to complete a series of complex actions, such as feeding from steel wire to spring coil and bending, and finally can complete the hook and ring processing of the spring tail. It not only can be rolled compression spring, and the stretch spring, torsion spring, double-head torsion spring, double spring, all kinds of spring can be applied freely to make. There are many types of foreign special-shaped spring forming machines, the main models are ZO type and FTU type of WAFIOS Of West Germany, MS type and AT type of TC and HP of France, MCF type of Okno Corporation of Japan and VF-800 type of Xinxing Corporation of Japan etc