Mechanical tensile spring processing equipment and processing production line towards computer control CNC programming and numerical control (CNC) and deep development. With tensile spring material, and a few new changes.

Currently, mechanical tensile spring processing equipment and processing production line to CNC CNC) and the computer control the depth of the CNC program development. With tensile spring material and a few new shape change, also have development processing operations.

1) to stretch the spring diameter, pitch, and the wire diameter change, tensile spring suspension without molding processing. Three changes of tensile spring development,

Has always been the taper winding steel rods in the numerical control lathe processing, yield and prices are not reasonable. Instead of under the thermal state through the spring coiling machine, roll speed and tension control, and help to get the cone shape, and use the quenching process of waste heat.

2) hollow stable tensile spring rod rolled low carbon steel welding.

3) torsion bar using high purity of 45 # steel, the high frequency quenching to obtain high hardness and on the surface of the larger residual compressive stress, so as to improve the fatigue life and relaxation resistance.

4) electronic products are widely used piece of tensile spring basically adopts the stamping and automatic bending forming. Mainly is the development of joint technology of complex materials.

(1) the tensile spring cold forming process

1) cooling one-time automation. The forming process of cooling machine now has grown to 12 feet spring machine. Within the range (0.3 ~ 14) mm steel wire, basically in eight claw spring forming machine forming at a time. News fast development of equipments in the forming process.

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

(2) by improving the equipment parts precision and strengthening effect of heat treatment to improve equipment durable performance;

(3) increase the sensors and a laser range finder, can automatically closed-loop control for CNC numerical control machine manufacturing process.

2) cooling range. The forming process of the large diameter line stretching the spring, spring coiling machine, the largest specifications up to 20 mm, = 2000 mpa, convolute than 5. Diameter or outer diameter, such as the Minic - Block spring and eccentric tension spring cold forming technology still has limitations.

(2) the tensile spring hot forming process

Ability development speed of 1) the hot forming process. At present our country on (9 ~ 25 mm specifications forming only X2 axis CNC CNC computer spring machine hot spring coiling machine, can produce 17 pieces of maximum speed per minute. Compared with developing countries by comparison the gap is bigger.

2) the big extension spring hot forming process control ability. Because only calculation X2 axis CNC CNC hot spring coiling machine shape control three directions, less accuracy; And now have no automatic bar stock rotation control and adjustment, so hot rolled low tensile spring forming technology level and ability. Thus tensile spring level of precision and surface oxidation decarbonization level is low.