Page:Practical Treatise on Milling and Milling Machines.djvu/191

Rh Cutting a Cylindrical Cam, Using Cam Cutting Attachment

For cutting a cylindrical cam, the head is bolted to the bed parallel to the table and the cam blank is supported on an arbor mounted on the attachment centres and dogged to the spindle. The table is raised to a point that brings the attachment centres at the same height as the axis of the spindle.

A spiral end mill is used for this operation and the necessary movement to feed the work is obtained from the attachment, the table remaining clamped in one position.

This view of the attachment shows very clearly the former on the outer end of the head.