To machine an internal hole in a broaching operation, the broach is gripped by the _____.

Explanation:

Broaching Operation

• Broaching is a machining process that uses a toothed tool, called a broach, to remove material. There are two main types of broaching: linear and rotary. In both processes, the broach is used to machine internal holes, splines, keyways, or other shapes in a workpiece.
• In a broaching operation, the broach is drawn or pushed through the workpiece to shape or enlarge a hole. The broach has a series of progressively larger teeth that cut the material in a single pass, producing a precise and smooth finish. The operation can be performed on a broaching machine, which is specifically designed for this purpose.
• In internal broaching operations, the broach is typically pulled through the workpiece using a puller. The pilot is a cylindrical portion at the front of the broach that helps in aligning and guiding the tool through the hole before the cutting teeth engage. The puller attaches to the pilot to draw the broach through the component, ensuring proper orientation and control during the cutting process.

Applications: Broaching is widely used in industries such as automotive, aerospace, and manufacturing to produce internal gears, keyways, splines, and other precise shapes.