Patent ID: 6098258
Filing Date: 2000-08-08
Classification: B23C,B23D,Y10T

Abstract:
A combined machining apparatus for lathing and broaching a workpiece, comprising:a work head for carrying a workpiece to be machined while in rotation, whereby the workpiece at least at one end thereof is clamped;at least one broaching unit disposed in the vicinity of said work head;a unit feed means for displacing said at last one broaching unit in a longitudinal direction of the workpiece;a broach head mounted on said broaching unit;a broach head feed means for displacing said broach head towards and away from the workpiece;a circular broaching tool mounted on said broach head and adapted to carry rough machining tips for lathe machining and finish machining tips for broach machining detachably on an outer peripheral surface of said circular broaching tool for both lathing and broaching the workpiece;a broach drive means operable under an NC for rotating said circular broaching tool; anda broach holding means received in said broach head and adapted to hold said circular broaching tool fixed against rotation when said workpiece is lathed therewith and to permit said circular broaching tool to be rotated with said broach drive means when said workpiece is broached therewith.