Page:Practical Treatise on Milling and Milling Machines.djvu/212

206 Milling Curved and Flat Surfaces at one Setting of Work, Using Vertical Spindle and Circular Milling Attachments

A combination of a vertical spindle and circular milling attachment is shown in this operation. With these two attachments, practically the same variety of work can be done as on a vertical spindle milling machine of equal capacity.

The job being done consists of milling a flat surface on the top of a piece and a curved surface at the end of it. The piece is set over a bushing inserted in the centre of the circular milling attachment table. The work is fed in a circular path by means of the hand-wheel, and when the flat cut is finished, the machine table is raised for milling the curved surface, but the work is not disturbed.

With a vertical spindle milling machine, only the circular milling attachment is needed.