Dozens of different functions that are assigned to technical springs come to mind as a matter of course. Holding, connecting, clamping, fastening, closing, securing, latching or contacting are the main services required of them. But what is the engineering definition of technical springs and how do they differ? We clarify.
Definition of technical springs
Spring is a technical component made of spring steel that can deform elastically. It gives way under stress and absorbs force, which it releases again when it relaxes and returns to its original shape. The materials from which technical springs are made are primarily spring steel sheet, spring steel strip and spring steel wire. Their designation is often determined by their external appearance: spring clips, form springs, strip springs, flat springs or spring clips.
Formulas of a technical spring
In order to produce technical springs with sustainable functionality, a very precise spring calculation must be carried out. In addition to their shape and the material used, technical springs are defined by the spring constant and the spring characteristic. The spring constant describes the increase in force in relation to the path or the angle of rotation. The spring characteristic curve, in turn, represents the course of a spring constant. This is usually linear, i.e. the force increases evenly with increasing deformation of the spring. One speaks of a progressive characteristic. This is contrasted by the degressive characteristic with its even decrease in force. There are also combined spring characteristics in which the force properties change.
Almost all applications that use technical springs are based on a basic function: technical springs as elastic components yield under load and return to their original shape when relieved. This basic function is used, among other things, to open/close switching contacts or to move parts of a machine. If they are preloaded, they are used as drive energy or as a restoring force, for example in switches. They are also used as a non-positive connection where kinetic energy is converted into potential energy.
Most types of feathers
Straight flat springs are often found in contact systems of electrical switches. They are usually installed preloaded as contact springs. In contrast, curved flat springs and shaped springs have an almost limitless range of applications. While a curved flat spring is punched and shaped in one operation with an automatic stamping and forming machine, a shaped spring is first cut out of spring steel sheet using a laser cutter and then shaped into the desired shape by subsequent forming. Spring clips, also known as pipe clamps or clamping springs, are produced in one or two operations, depending on the application. As a rule, they are responsible for a non-positive connection. Spring clips are the first choice wherever something needs to be fixed, locked, adjusted or snapped in and mounts without screws are required.
From the basic form to the specialty
Take the knowledge behind the above-mentioned basic facts, develop it further along with the rapidly developing technological requirements and enrich it with decades of know-how that has been formed from countless special orders: You get a first address for technical springs that fundamentally and produces an individual and sustainable solution for your task down to the last detail: Schaaf.