1、 Definition of spring force value
1. The spring force value is simply the calculation of the spring force. Spring force value refers to the effect of elastic deformation of the spring on the object in contact with it. This force is called spring force. The spring force value is the calculation of the spring force.
2、 Compression spring force value
1. Compression spring is a spiral spring that bears upward pressure. The material section used is mostly circular, and it is also made of rectangular and multi strand steel. The spring is generally of equal pitch. The shapes of the compression spring include: cylindrical, conical, convex and concave, and a small number of non-circular. There is a certain gap between the coils of the compression spring. When the compression spring is subjected to external load, the spring shrinks and deforms and stores deformation energy. For the design data of compression spring, in addition to the spring size, it is more necessary to calculate the load of Z large load and displacement size;
2. Spring constant: expressed in K, when the spring is compressed, the load (kgf / mm) is increased by 1mm;
3. Spring constant formula (unit: kgf / mm): 3. G = rigidity modulus of wire rod: Piano steel wire g = 8000; Stainless steel wire g = 7300, phosphor bronze wire g = 4500, brass wire g = 3500 d = wire diameter do = od = outer diameter Di = id = inner diameter DM = MD = pitch diameter = do-d n = total number of turns NC = effective number of turns = n-2 spring constant calculation example: for example: wire diameter = 2.0mm, outer diameter = 22mm, total number of turns = 5.5, steel wire material = Qin steel wire III. tension spring force value
1. Tension spring is also called tension spring, which is called tension spring for short. The K value of tension spring is the same as that of pressure spring. 1. Initial tension of tension spring: the initial tension is equal to the force required to pull apart the close springs and coils. The initial tension occurs after the spring is rolled and formed. During the production of tension spring, the initial tension of each tension spring is uneven due to the difference of steel wire material, wire diameter, spring index, static electricity, lubricating grease, heat treatment, electroplating, etc. Therefore, when installing tension springs of various specifications, the force required to slightly separate the parallel coils is called initial tension.
2. Tension spring formula: initial tension = P - (k) × F1) = Z large load - (spring constant) × Stretch length)
4、 Torsion spring force value
1. Spring constant: expressed in K, when the spring is twisted, the load (kgf / mm) per 1 ° torsion angle increase
2. Spring constant formula (unit: kgf / mm): e = rigidity modulus of wire rod: piano wire e = 21000, stainless steel wire e = 19400, phosphor bronze wire e = 11200, brass wire e = 11200d = wire diameter do = od = outer diameter Di = id = inner diameter DM = MD = pitch diameter do DN = total number of turns r = moment arm under load p = 3.1416
