Types of Springs

Types of Springs

Various types of springs are used for domestic and industrial purposes. It stores mechanical energy and disposes when required. Springs are classified into various categories depending upon various factors.

Classification of springs based on the load applied:

  • Torsion Spring
  • Compression Spring
  • Extension Spring

Classification of springs based on the displacement due to force applied:

  • Constant Force Spring
  • Variable Rate Spring
  • Linear Spring

Classification of springs based on the how they’re made:

  • Coil Spring
  • Flat Spring
  • Molded Spring
  • Machined Spring

Torsion Spring

This acts due to twisting force or torque applied on the spring. For example, mousetrap and clothespin

Compression Spring

This acts due to the force exerted by load which is compressed. These are used in shock absorbers, retractable pens, spring mattress.

Extension Spring

It operates with tensile load and generally used in garage door mechanisms.

Constant Force Spring

Here, the spring is extended while applying a constant force. It is also known as clock springs. It is used in clocks and adjustment of monitor screen.

Variable Rate Spring

It does not have the same spring rate throughout axial length. Depending on the spring rate, it is of three types.

  • Linear Rate Spring which has a constant spring rate
  • Progressive Rate Spring consisting variable spring rate
  • Dual Rate Spring consisting of form rate and soft spring rate

Coil Spring

This types of springs are lightweight and are made of metal wires formed with the help of CNC coiling machine. The springs which comes out of this machine needs to be heated in order to get springy properties and create shape memory.

Flat Spring

These are made by stamping metal parts into a sheet. These are also heat treated to shape memory. These are of all sorts of sizes and shapes and are coiled flat spring as well. These are used in spring washers, retainer clips, clock springs and volute springs.

Molded Spring

These springs are made of plastic or a corrosive material. These has creep and generally used in intermittent cycles. Its application can be seen in food production, marine application and medical.

Machined Spring

These are used in heavy duty application where high strength and precision is required. It is used in mills and lathe machines.

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