National Standard for Disc Spring

The national standard of disc spring and its application principle:

Disc spring national standard GB/T1972-92

The disc spring standard specifies the size series, technical requirements, test methods, inspection rules and design calculations of disc springs

The disc spring standard applies to general disc springs

The disc spring standard does not apply to trapezoidal section disc springs, slotted disc springs and wax disc springs

Disc spring reference standard:

GB /T 1222 spring steel

GB/T 2828.1 Sampling inspection procedure by attributes Part 1: Batch inspection sampling plan retrieved by acceptance quality limit (AQI.)

(GB/T 2828.1-2003, ISO 2859-1:1999, IDT)

GB /T 3 279 spring steel hot rolled sheet

GB/T 4 340.1 Metal Vickers Hardness Test Part 1: Test Method (GB/T 4340.1-1999, egvI SO 6507-1:1997)

YB /T 5058 Spring steel, tool steel cold rolled steel strip

principle

The disc spring is a special spring that is tapered in the axial direction and bears the load. After the load is deformed, a certain potential energy is stored. When the bolt is loosened, the disc spring releases part of the potential energy to maintain the pressure between the flange connections. Sealing requirements. The stress distribution of the disc spring decreases evenly from the inside to the outside, which can achieve the effect of low stroke and high compensation force.

Application

In a large range, disc springs are replacing cylindrical spiral springs. They are often used in heavy machinery (such as presses), artillery, aircraft and other weapons, as powerful buffers and damping springs, and used as clutches and safety valves for vehicles and tractors. The compression spring and the energy storage element used as a motorized device.

Disadvantages: The load deviation is difficult to guarantee.

Disc springs can be divided into three categories according to the different cross-sectional shapes: including ordinary disc springs (the cross-sectional shape is rectangular), disc springs with radial grooves, and trapezoidal cross-section disc springs. Common disc springs are divided into: There are two types of support surface and unsupported surface; the disc spring with radial grooves is based on ordinary disc springs, and several uniformly distributed grooves are opened in the radial direction. The grooves can be opened from the inner hole to the outer circle. It can also be opened from the outer circle to the inner control direction; the trapezoidal cross-section disc spring can be divided into two types: the inner edge thickness is greater than the thickness of the external aid and the inner edge thickness is less than the thickness of the outer circle. Due to the deformation of the single-piece disc spring and The load value often cannot meet the requirements of use. At this time, it can be used in groups to form a disc spring assembly (column). The typical combination method is: stack combination disc spring, composite combination disc spring and other combination disc springs.

Compared with cylindrical coil springs, disc springs have the following characteristics:

A, the load deformation characteristic curve is nonlinear.

B, the disc spring is in the shape of a thin plate, which is easy to form a composite part, and can be assembled and replaced in a modular manner, thus bringing convenience to maintenance.

C, the disc spring with radial groove has the characteristic of zero stiffness. This characteristic can be used in a certain deformation range where the spring force is basically stable.

D. The vibration absorption performance of the disc spring is not lower than that of the cylindrical coil spring. When the laminated combination is used, the friction between the disc springs will have greater damping and dissipate impact energy.