Method and tool for producing a thread in a workpiece

US9662728B2 · kind B2 · utility

Assignees

• EMUGE-WERK RICHARD GLIMPEL GMBH & CO. KG FABRIK FUR PRAZISIONSWERKZEUGE · DE
• AUDI AG · DE

Inventors

• Helmut Glimpel · Achern, DE
• Dietmar Hechtle · Pegnitz, DE
• Peter Kopton · Unterschleißheim, DE

Key dates

• Filing date: Jun 10, 2013
• Grant date: May 30, 2017
• Expiry date: Jul 11, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T409/503116
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A method for producing a thread can include a) generating a number n≧1 of twisted grooves in a wall of the workpiece encircling a thread axis (M) or generating a wall of the workpiece which has a number n≧1 of twisted grooves and encircles a thread axis, b) respectively inserting a thread generating region of a tool into each of the twisted grooves in a twisted insertion movement, c) generating a thread in each wall sub-region, adjoining the groove(s), of the wall of the workpiece by rotating the tool about the thread axis (M) and with a simultaneous axial feed motion of the tool coaxially with respect to the thread axis with a particular axial feed speed and d) moving each thread generating region of the tool out of the associated groove in a twisted removal movement matched to the twisting of the associated twisted groove.