Method and apparatus for machining with a pivoting cutting tool
AssigneePakos Group
InventorAndrew E. Pakos
Life of this patent
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Abstract
A method and apparatus has been developed for metal cutting machine using a cutting die tool that pivots as it cuts a metal workpiece. By pivoting the cutting tool, the orientation of the metal surface being cut in the workpiece may be varied along the cutting path. A particular application of the invention is for screw metal cutting machine, e.g., a Swiss-type screw lathe, that cuts screw threads in screw blank rods, such that the threads have a variable cant along the length of the screw. The cutting die tool is mounted in a tool holder that is pivoted by a computer controller in accordance with machining instructions for the screw or other device being machined.
Claims5
A metal cutting machine comprising:
- a rotating chuck for holding a rod stock to be machined, wherein the chuck moves the rod stock reciprocally in a direction coaxial to an axis of the rod stock;
- a cutting tool die aligned to cut metal from the rod stock as the stock is rotated and moved reciprocally by the chuck, and the tool die forming a pitch angle with a surface being cut in the rod stock by the tool die;
- a pivoting cutting tool holder having a bracket holding the tool die cutting the rod stock, wherein the tool holder pivots the tool die as the die cuts the rod stock to vary the pitch angle.
Dependencies are inferred from the claim text.