This machine type can have 6 cross slides and 6 end working stations. Each tooling station performs a distinct segment of the machining process. To produce specific part diameters, a dovetail form tool is typically applied. Standard tools produce drilled, tapped and reamed holes. There is no computer or control to tell the tool stations or the stock how and where to move.
Cams typically control the main slide movement.
PLC units replace some of the cams used to action machine movements. This PLC unit can fire a slide forward until an electrical proximity switch is actuated at the full tool slide position. The most noteworthy aspect of a multi-spindle machine is, of course, the cycle time. With all six spindles machining at the same time, an entire part can be machined in the time it takes to perform the longest operation. A total of six end working and six cross working tools can be applied simultaneously.