Types of springs Design Machine Elements (DME)

Different types of spring in design machine element subject for gtu students.
Prepared by Amit Makwana

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1. Government Engineering College, Bhavnagar.

2. Branch : 5 th Mechanical Subject : Design of Machine Elements Topic : Types of Springs Prepared by : Amit Makwana (140210119064 ) Dharmesh Baraiya ( 140210119005 ) Hiren Gilatar ( 140210119034 ) Nayan Jasoliya ( 140210119046 )

3. Types of Spring : Helical Springs Conical & Volute Springs Torsion Springs Leaf Springs Disc Springs

4. 1. Helical Springs : Based on the type of axial force, Helical spring can be classified into two categories : Compression Helical Spring Tension Helical Spring The Helical Springs are said to be closely coiled when helix angle is very small, usually less than 10 degree. In this spring wire is coiled so close that there is very small gap between two consecutive coils.

5. The helical springs are said to be open coil when helix angle is large, usually Greater than 10 degree. In this spring, wire is coiled so close that there is large gap between two consecutive coils.

6. 2. Conical & Volute Spring : As shown in fig, Conical and Volute spring is a cone shaped compression spring. This springs are designed to provide a variable spring rate and a solid height lower than a normal spring.

7. These springs are used where axial space is limited. The conical spring is chosen to allow coils to fold into each other when spring is fully compressed.

8. 3. Torsion Spring : As shown in fig, Torsion spring are of helical or spiral type springs. These are used to transmit small torque. Helical type spring rotate about an axis to create load and releases the load in the area around the axis.

9. Spiral spring consist of flat wound in the form of spiral and loaded in torsion.

10. 4. Leaf Spring : The Leaf spring consist of number of strips with same width and different length clamped together by means of clamps and bolts as shown in fig.

11. These springs are capable to absorb heavy shocks loads compared to other conventional type of springs. These are commonly used in automobiles and rail suspension system.

12. 5. Disc Spring : As shown in fig, Disc spring is composed of coned discs which may be stacked up together to give a variety of spring load-deflection characteristics. These springs are used where high stiffness is required.

13. Thanks