Broach

Primary Use
One of the many different types of broaches is a linear broach that is used for cutting keyways in holes. A keyway is used so that a circular shaft with a key can be inserted into a hole with a keyway and the shaft will not rotate within the hole. A linear broach is used with a broach machine or some sort of press. A broach is normally very efficient because it completes its cut with only one pass.

Step 1
The first step is to insert the broach bushing into the hole that is having a keyway cut in it.

Step 2
Insert the linear broach into the broach bushing and insert the entire part into the arbor press. Apply steady pressure to the press and you bring the handle down on the broach.

Final Product
The product is just a simple hole with a groove cut out on one side. If a deeper groove is needed, shims can also be added behind the linear broach in the bushing which pushes the cutting blades out further.