Tool and method for forming a thread, in particular an internalthread

US11110530B2 · kind B2 · utility

Assignee

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

Inventors

• Helmut Glimpel · Achern, DE
• Dietmar Hechtle · Pegnitz, DE
• Thomas Funk · Collinsville, US

Key dates

• Filing date: Jun 14, 2019
• Grant date: Sep 7, 2021
• Expiry date: Jun 14, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23G2200/24
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A thread forming tool comprises a thread generating region that extends along a helical line with a thread pitch angle and a thread direction of the thread to be formed and has an active profile corresponding to the thread profile of the thread to be formed, wherein the thread generating region has a thread tooth having a thread profile with a front thread tooth profile flank and a rear thread tooth profile flank, has a front flank relieved surface, adjoining the front thread tooth profile flank and has a rear flank relieved surface, adjoining the rear thread tooth profile flank, wherein the front flank relieved surface is isolated relative to a front thread tooth flank envelope, wherein the rear flank relieved surface is displaced relative to a rear transverse plane wherein the helical line is inclined to the rear relative to the rear transverse plane by the thread pitch angle.