See Kibbe, et al p 550-551 for a more detailed description of vertical spindle milling machine.
	Note that this is the most flexible type of milling machine.� On the newer Dynamytes, there is no real separate knee or toolhead or quill.� Have a saddle that slides along base and a table which slides in the saddle.� Ram can move up and down, giving the dynamyte machines 3 possible axis of motion.� Again, recall that the controller can actually only move 2 of these at any time, making the DynaMyte milling machines 2 1/2 DOF machines.� (This is little tidbit has found its way onto many past ME/IWSE 683 finals).
	Further note that in this generic case, one has 3 DOF between table, saddle, and quill (giving full x,y,z positioning) and 2 DOF in joints between toolhead and ram (control of normal).� Thus can have 5 DOF with just these, in addition have sliding motion of knee, and swiveling and sliding motion of ram.� What do these extra motions allow??� They allow one to overcome machine travel limits and work around obstacles.