To a large extent, disc spring is replacing cylindrical coil spring.
It is commonly used in heavy machinery (such as press), artillery, aircraft and other weapons. It is used as a strong buffer and damping spring, as a compression spring of clutch and safety valve of truck and tractor, and as energy storage element of mechanical equipment.
Disadvantages: it is difficult to guarantee the load deviation.
Disc spring can be divided into three types according to the different cross-section shapes: ordinary disc spring (whose cross-section shape is rectangular), disc spring with radial groove and trapezoidal cross-section disc spring. The ordinary disc spring is divided into two types: one with supporting surface and the other without supporting surface; the other with radial groove is on the basis of ordinary disc spring, which has several evenly distributed slots along the radial direction, which can be opened from the inner hole to the outer circle, or from the outer circle to the internal control direction; the trapezoidal cross-section disc spring can be divided into two types: the inner edge thickness is greater than the external support thickness, and the inner edge thickness is less than There are two types of cylindrical thickness.
Because the deformation and load value of single disc spring can not meet the requirements of use, it can be used in groups to form disc spring assembly (column).
The typical combination methods are: composite disc spring, composite disc spring and other combination disc spring.
Compared with cylindrical coil spring, disc spring has the following characteristics:
1、 The load deformation characteristic curve is nonlinear.
2、 The disc spring is in sheet shape and easy to form a combination. It can be assembled and replaced by building blocks, so it is convenient for maintenance.
3、 The disc spring with radial groove has zero stiffness characteristic. This characteristic can be used in some deformation range where the spring force is basically stable.
4、 The vibration absorption performance of the disc spring is not lower than that of the cylindrical spiral spring. When the laminated combination is adopted, the disc spring has greater damping and dissipates the impact energy due to the friction between the disc springs.