Page:Practical Treatise on Milling and Milling Machines.djvu/86

80 Universal Milling Attachment. Fig. 32 shows the Universal Milling Attachment, and as its name implies, it is fully universal in regard to setting the spindle. In addition to the large amount of work already mentioned in connection with the Vertical and Compound Vertical Attachments, this mechanism can be used for many othe. operations, because of the fact that the spindle can be set at any angle in both horizontal or vertical planes. It is clamped to the face of the column and the outer end is inserted in the arbor Fig. 32 yoke to give additional stability.

Horizontal Milling Attachment. We have mentioned the advantages to be derived from the use of vertical spindle milling attachments on horizontal spindle milling machines, and it is reasonable to suppose that to a certain extent, similar advantages are to be gained by the employment of a horizontal milling attachment on vertical spindle milling machines. An attachment of this kind is shown in Fig. 33. It is designed for use upon our No. 1 Vertical Spindle Machine, and with it such work as cutting spiral gears, racks, milling keyseats, etc., can be readily done. It is simple in construction and can be quickly attached to the machine.

Circular Milling Attachments. Circular Milling Attachments provide a means of economically doing such work as milling circles,