(1) Cold forming process of spring

1) One-time automation of cold forming process. Cold forming machine has been developed to 12 claws. Steel wire in the size of (0.3 ~ 14)mm, basically in the 8 claw forming machine at a time. The development direction of forming process equipment at present:

(1) Improve the forming speed, the main development trend is to improve the forming speed of equipment, that is, the production efficiency;

(2) Improve the durability of equipment by improving the precision of equipment parts and strengthening the heat treatment effect;

③ Add length sensor and laser rangefinder to automatically control the process of CNC forming machine.

2) Cold forming process scale ability. At present, the large wire diameter spring coiling machine, the maximum standard can reach 20mm, 2000MPa, winding ratio 5. The cold forming process of Minic-Block spring and eccentric spring with variable diameter or equal diameter material is still limited.

(2) Hot forming process of spring

1) Hot forming process speed ability. At present, our country is formed on (9 to 25)mm standard only CNC2 shaft hot coil spring machine, maximum speed of 17 per minute. Compared with developed countries, the gap is large.

2) Large spring hot forming process control ability. Because there is only CNC2 shaft hot spring coiling machine, the shape control is less than three directions and the accuracy is poor. And there is no automatic bar rotation control and adjustment mechanism, so the hot coil spring forming process level and ability is low. Therefore, the precision level of the spring and the surface oxidation and decarbonization level is also low.