What is broaching operation:
broaching brushConstruction of broaching tools
The construction of any cutting tool is mainly characterized by
Broaching Operation – Finishing HoleChipbreaker
Push-pull brooches are made in the form of slender rods or bars of varying section, having along their length one or more rows of cutting teeth of increasing height (and occasionally width). Push type broaches are subjected to compressive loads and are therefore shorter in length to prevent buckling.
The essential elements of the brooch are:
Essential elements of the brooch tool
Advantages of broaching:
1. It is the fastest way to complete an operation with a single swipe.
2. Very little operator skill is required.
3. It is simple as only a single reciprocating movement is required for cutting.
4. The final machining cost is one of the lowest for mass production.
5. Any type of surface, internal or external, can be generated with broaching.
6. Good surface finish and fine dimensional tolerance can be achieved.
Broaching limitations:
1. Customized brooches are very expensive and therefore generally used for high volume production.
2. Manufacturing time is longer for personalized broaches.
3. A broach can be designed and used for a specific application.
4. As it is a very heavy metal removal operation, it requires the part to be rigid and capable of withstanding large forces.
It can only be carried out on the part whose geometry is such that there is no inference of the movement of the broach for cutting.
