Pull Broaching Machines

Pull Broaching Machines

Pull Broaching Machines - In such machines, the broaching tool is pulled through or across the work which is stationary. The broach may be pulled up or pulled down through or across the workpiece. A vertical pull down machine consists of a worktable, usually having a spherical seated work bolder, a broach elevator above the table, and a puller mechanism below the table.

When the elevator raises the broach above the table, the work can be placed into position. The elevator then lowers the pilot end of the broach through the hole in the workpiece where it is engaged by the puller.

Pull Down Broaching

The elevator releases the upper end of the broach and the broach is pulled through the workpiece thereby giving to the hole in the workpiece, the required size and shape. The work piece is removed from the table, and the broach is raised upward to be engaged by the elevator mechanism.