Method and apparatus for machining workpieces with eccentric, substantially rotationally symmetrical, workpiece surfaces

US5765270A · kind A · utility

Assignee

• Boehringer Werkzeugmaschinen GmbH · DE

Inventors

• Hans Schrod · Uhingen, DE
• Wolf-Dietrich Voss · Bonndorf, DE
• Rolf Santorius · Uhingen, DE
• Paul Dieter Schapf · Schlat, DE
• Anton Horsky · Schallstadt, DE
• Matthias Kohlhase · Schramberg, DE

Key dates

• Filing date: Dec 22, 1995
• Grant date: Jun 16, 1998
• Expiry date: Dec 22, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T409/400175
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

The invention discloses a method of machining workpieces such as crankshafts, camshafts or similarly shaped members, having surfaces which are disposed both concentrically and also eccentrically relative to a workpiece axis and which are rotationally symmetrical or approximately rotationally symmetrical. The machining of the concentrically curved surfaces is effected by means of turning, rotational broaching and/or turning-rotational broaching and the machining of the eccentric workpiece surfaces is effected by means of end-milling wherein the axis of rotation of the milling cutter is transverse with respect to the spindle axis 3, and the workpiece is subjected to cutting finishing machining and the clamping means.