Broaching Machines

16ME209 Broaching Machines 1 What is Broaching?

• Broaching is a machining operation in which a tool used is called as broach having series of cutting teeth. • In this operation broach is either Pulled or Pushed with the help of broaching machine on the workpiece surface. • Parts that is produced by the broaching have good surface finish and dimensional accuracy.

16ME209 Broaching Machines 2 Broach Tool • Broach consist of three sets of cutting teeth. They are: 1. Roughing teeth 2. Semi finishing teeth 3. Finishing teeth

16ME209 Broaching Machines 3 Principle of Broaching

• When the broach is fed in a straight line, metal is cut in several successive layer with the help of broach. • The thickness of each layer is same and called as feed per tooth and sum of the thickness of all the layers is called as depth of cut.

16ME209 Broaching Machines 4 Broaching Machines • Mainly broaching machines which are used in the industries are of following types:- 1. Horizontal Broaching Machine 2. Vertical Pull Type Broaching Machine 3. Continuous Broaching Machine 4. Rotary Table Broaching Machine 5. Surface Broaching Machine 6. Keyway Broaching Machine

16ME209 Broaching Machines 5 Advantages of Broaching

• Broach has a longer life than other tools. • Broach can perform roughing and finishing operations. • High skilled operator is not required. • Interchangeable components can be produced at faster rate.

16ME209 Broaching Machines 6 Disadvantages of Broaching

• In this process, all jobs need a fixture. • Sharpening of broach is difficult and expensive. • With the help of broaching, it is difficult to produce blind holes. • Initial cost of broach and broaching machine is very high.

16ME209 Broaching Machines 7 Applications of Broaching • Broaching used for producing the variety of shapes, internal and external, regular and irregular profiles. • The examples of components produced by broaching are as follows: 1. Bearing caps 2. Bearing bodies 3. Cylinder blocks 4. Connecting rods 5. Gears and Turbine 6. Keyways 7. Splines

16ME209 Broaching Machines 8 References

• Manufacturing process-1(technical publication) by Anup gohel • www.youtube.com • https://www.Wikipedia.org>wiki>broaching_(metalworking) • www.americanbroach.com

16ME209 Broaching Machines 9 Thank You

16ME209 Broaching Machines 10