After the spring is formed, it generally needs to be subjected to low temperature stress removal annealing or blue treatment at 220 ~ 330 ℃, or according to the requirements of the operating conditions of the spring and the nature of the selected material, it needs to be hardened and tempered to improve the spring force. However, clamps should be used during the heat treatment of the spring to prevent the ring from shrinking and jamming with the shaft when working. Others, such as removing the corners of the two outer ends, radial burrs, etc., cannot be ignored. In the event of a spring with a tendency to bend, a coil of strips can be used to rub the tensioned spring along the longitudinal direction of the axis repeatedly until the surface is locally hardened. Spring is not in place, failure mode and reason: In actual work, we often encounter that the spring cannot push the moving object to the set position, which means that the calculated free length of the spring becomes shorter. The main reason is that there is no initial compression treatment, that is, a manufactured spring is compressed to its compression height or tight height (if necessary) with a relatively large force, and it cannot be restored to its original shape after being released. The free length of the operation. The amount of shortening is called "initial compression". Generally, after 3-6 times of compression, the length is no longer shortened, that is, the spring is "positioned". The spring undergoes permanent deformation after initial compression Precaution: In actual work, the compression spring should be able to maintain its working length even if it is subjected to a force beyond the elastic limit of the material. Therefore, the length of the finished spring should be equal to the calculated length of the spring plus the initial compression, which can prevent the spring from being out of place, so as to avoid dangerous stress when the coil is tightened, which may cause the spring indicator line to be abnormal and not in place. In the heat treatment process of the finished spring, especially the hardening and tempering process, the workpiece must be placed horizontally (horizontally) i

Torsion springs are one of the more complicated design principles among all spring categories, and the type changes are also quite lively, so the theory involved in the design is also the most cumbersome. Torsion springs are helical springs. The ends of the torsion spring are fixed to other components, and when the other components rotate around the center of the spring, the spring pulls them back to their original positions, generating torque or rotational force. The torsion spring can store and release angular energy or rotate the arm around the central axis of the spring body to statically fix a device. This type of spring is usually dense, but there is a pitch between the coils to reduce friction. They generate resistance to rotation or external forces of rotation. According to the application requirements, design the direction of rotation of the torsion spring to determine the direction of rotation of the spring. The circles are either tightly or separated around each other, which can be adapted to torsion load. The end of the spring can be wound into a hook shape or a straight torsion arm.

A torsion spring is a mechanical part that uses elasticity to work. Generally made of spring steel. It is used to control the movement of parts, ease the impact or vibration, store energy, measure the size of the force, etc. It is widely used in computers, electronics, home appliances, cameras, instruments, doors, motorcycles, harvesters, automobiles, and other industries. The main equipment of the production equipment includes: digital control multi-function computer spring coiling machine, mechanical automatic spring coiling machine, spring grinding machine, heat treatment equipment, large-scale hot coil spring production line, and quality inspection equipment. Why can torsion springs be used in a wide range of fields? We can understand the working principle of torsion spring. In application, the bottom part of the torsion spring is often fixed to other places, which forms the phenomenon that other components rotate around the center of the torsion spring. Once the other components begin to rotate around the center of the spring, the spring quickly pulls the other components back to their original positions, which will form a rotational force that changes the generated rotational force into the required resistance. In this way, the torsion spring can fix a device in a static manner by storing or releasing this energy, and achieve the desired result. Of course, we can also find that the places of application are different, and the number of turns of the torsion spring is also different. Therefore, there is a lot of physics and mathematics involved. The number of turns required by the torsion spring is calculated by the resistance required to fix the device. Moreover, in the calculation process, the rotation direction of the torsion spring is designed according to the actual requirements of the application.

Performance factors: spring stiffness, maximum deformation, maximum load and direction of rotation specifications. Spring stiffness refers to the angular return torque produced by a unit angular displacement. The maximum amount of deformation refers to the maximum amount of deformation before the spring is damaged. The rotation direction of the torsion spring is right-handed, left-handed and double-handed. Application of torsion spring A torsion spring is a mechanical part that uses elasticity to work. Generally made of spring steel. It is used to control the movement of parts, ease the impact or vibration, store energy, measure the size of the force, etc. It is widely used in computers, electronics, home appliances, cameras, instruments, doors, motorcycles, harvesters, automobiles, and other industries! The main equipment of production equipment includes: digital control multi-function computer spring coiling machine, mechanical automatic spring coiling machine, spring grinding machine, heat treatment equipment, large-scale hot coil spring production line, and quality inspection equipment. large torsion springs

Spring steel belongs to steel for mechanical structure; according to its quality grade, it belongs to special quality steel, that is, steel that requires strict quality and performance control during the production process. Classified according to chemical composition: 1. Carbon spring steel. 2. Alloy spring steel. 1. Carbon spring steel: mostly used materials: 65#, 70#, 65mn, 82b, 72a, 72b steel wire, characterized by low plasticity, strong elasticity, and strong stress resistance. Uses: mostly used in Simmons beds, automobiles and other Kinds of cushions, machinery manufacturing, stationery, power tools, sports equipment, torsion springs, tension springs, electrical equipment and other industries. Specification range: wire diameter φ0.20mm-φ6.50mm. Standard: carbon spring steel wire national standard gb4357-89 Main purpose: used to manufacture springs that are wound and formed in a cold state without being quenched 2. Alloy spring steel: Alloy spring steel is a type of steel used to make springs or other elastic parts. Springs generally work under alternating stress, and the common form of failure is fatigue failure. Therefore, alloy spring steel must have a high yield point and yield ratio (σs/σb), elastic limit, and fatigue resistance to ensure that the spring has Sufficient elastic deformation capacity and able to withstand larger loads. At the same time, alloy spring steel is also required to have a certain degree of plasticity and toughness, a certain degree of hardenability, not easy to decarburize and not easy to overheat. Some special springs also require heat resistance, corrosion resistance or stable elasticity over a long period of time. Both medium carbon steel and high carbon steel can be used as springs, but because of their low hardenability and strength, they can only be used to make springs with smaller cross-sections and smaller forces. Alloy spring steel can produce important springs with larger cross-sections and higher yield limits. In some occasions with specific requirements, such as high pH and humid environments, we often use stainless steel materials to make springs. The material of the mould spring is generally chromium alloy s

1. As a compression spring or tension spring There is no difference in function between left-handed spring and right-handed spring when used as tension and compression springs, but the right-handed spring is the main application. 2. As a torsion spring 1. Left-handed spring: The torsion force of the left-handed spring acts on the left-handed rotation, so it can only be used where the left-handed force is needed during application. 2. Right-handed spring: The torsion force of the right-handed spring is to rotate to the right, and the applicable range can only be the position that needs to be rotated to the right. Three, spiral spring The left-handed spring and the right-handed spring are just accumulators. They have the function of storing energy, but they cannot release the energy slowly. To realize the function of releasing slowly, it should be realized by the "spring + large transmission ratio mechanism". Classification of coil springs: 1. According to the different characteristics of the load during work, the spiral spring can be divided into three types: compression, tension and torsion; 2. According to the structural characteristics, it can be divided into two categories: cylindrical spiral spring and variable diameter spiral spring; variable diameter spiral spring mainly bears compression load; 3. According to its shape characteristics, it can be divided into cone, scroll, concave and convex. 4. In production and use, coil springs can also be divided into two types according to the forming method and material diameter: large coil springs and small coil springs; the former is usually hot-formed, and the latter is cold-formed. 5. In other categories, there are many types of spiral springs, which can be divided into: ordinary cylindrical spiral springs; variable diameter spiral springs. According to the direction of the helix, it can be divided into: left-handed spring; right-handed spring. 6. Variable diameter spiral springs are divided into: conical spiral springs, scroll spiral springs, and concave spiral springs. 7. Cylindrical spiral spring, simple structure, convenient manufacturing, and the most widely used. Its characte