Page:Practical Treatise on Milling and Milling Machines.djvu/177

Rh Milling Rack Teeth in Cylindrical Shaft

Sometimes it is required to mill a few rack teeth in a cylindrical shaft or plunger, and where a rack cutting attachment is at hand, this can be readily done. If one is not convenient, however, the work can be done in the manner shown above.

The shaft is supported on a parallel and clamped in a vise, and the teeth are indexed by means of the graduated dial on the cross feed screw.

Before indexing, care should be taken to remove backlash from the screw.