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The functions of contacting hardware shrapnel are as follows:

1. Control the movement of the organization

Use the elasticity of hardware springs to maintain contact between parts to control the movement of the organization, such as valve hardware springs in internal combustion engines, control hardware springs in brakes, clutches, cam structures, speed regulators, safety hardware springs on safety valves, etc.

2. Smooth impact and absorption of oscillations

Use hardware shrapnel deformation to absorb energy during impact and oscillation, such as buffering hardware shrapnel on vehicles and forging equipment, and vibration absorbing hardware shrapnel in couplings.

3. Size of measuring force

Measure the size of the load using the linear relationship between the deformation of the hardware spring and the load it receives, such as the hardware spring in the dynamometer, hardware spring scale, and engine indicator.

4. Storage and output of energy

The energy stored during deformation using hardware shrapnel is used for work, such as hardware shrapnel for wall clocks, hardware shrapnel for gun latches, and hardware shrapnel for tool holders in active machine tools that actively return equipment.