High-precision cutting and boring mill

摘要

A Cutting & Boring Tool which is capable of performing both conventional milling and high-precision automated machining operations is disclosed. One preferred embodiment of the invention comprises a compact Boring Mill (200) which includes five independently controlled and operated drive mechanisms: a spindle rotation motor (202) for rotating a spindle (208), a Z-axis spindle drive motor (204), a tool bit advance mechanism (206) which functions like a continuously variable transmission and which regulates the radial advance of a tool bit (211) and X-and-Y axis motors (218, 220), which provide motion along the side- to-side (X) and front-to-back axes (Z). A variety of tool bits (211) may be employed to drill, bore and form internal and external contours in a workpiece (212) made from metal, plastic or a composite material. The invention is extremely useful as part of an integrated CNC Machining System.