Millwright Level 1 Practice Exam

How does a hand broach create its cutting action?

1. By shearing material

2. By a series of successive teeth

3. Using a rotating blade

4. With a single pointed tool

The correct answer is: By a series of successive teeth

A hand broach creates its cutting action by using a series of successive teeth. Each tooth on the broach removes a small amount of material as it advances through the workpiece. This design allows for a gradual reduction in the diameter or shape of the hole being broached. The teeth are progressively larger, which enables the broach to achieve the desired dimension and finish in a single pass, making it an efficient tool for creating precise profiles. This method of cutting provides not only accuracy but also a smooth surface finish, as the action of multiple teeth working in succession helps to reduce the amount of material removed at any given time, minimizing the risk of damaging the workpiece. The progressive nature of the teeth means that they work together effectively, resulting in an optimized cutting process.