What is the advantage of the intermediary back plate?
When introduced in between the tool post carriage of your planer and the seating base of the milling head, an intermediary back plate facilitates setting the spindle axis ±45°, so that you can machine the profiles like tapers etc. Back plate enables easy setting of the spindle axis with respect to the machine table in right angles. It also facilitates full utilization of the quill stroke of the milling head spindle. It is possible to mechanize the tilting mechanism through an integral sector gear and worm mechanism.