Two forming processes of spring

(1) Cold forming process of spring

1) One-time automation capability of cold forming process. The cold forming machine has now developed to 12 jaws. The steel wire in the range of (0.3-14) mm can basically be formed at one time in the 8-jaw forming machine. The current development direction of forming process equipment:
    ①Increase the forming speed, the main development trend is to improve the forming speed of the equipment, that is, the production efficiency;
    ② Improve the durability of the equipment by improving the precision of the equipment parts and strengthening the heat treatment effect;
    ③Add a length sensor and a laser range finder to automatically close the loop control manufacturing process for the CNC forming machine.

2) The ability of cold forming process range. At present, the large-diameter spring coiling machine has a maximum size of 20mm, 2000MPa, and a winding ratio of 5. There are still limitations in the cold forming process of reducing or equal diameter Minic-Block springs and eccentric springs.

(2) Hot forming process of spring

1) Thermoforming process speed capability. At present, there is only CNC 2-axis hot coil spring machine for forming on the (9-25) mm specification, with a maximum speed of 17 pieces per minute. Compared with developed countries, the gap is large.

2) Large spring hot forming process control ability. Since there is only a CNC 2-axis hot coil spring machine, the shape control is less effective in 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 are low. As a result, the level of precision of the spring and the level of surface oxidation decarburization are also lower.