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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9919389 B1

PDFFull Text
Date of Patent:
Mar. 20, 2018

Filed:

Mar. 15, 2013

Method and tool for producing an exact-fit cylindrical bore by removal of material from an existing bore with a finishing allowance

Applicant:

Audi Ag, Ingolstadt, DE;

Inventors:

Peter Kopton, Kösching, DE;

Eugen Maurer, Ober-Mörlen, DE;

Assignee:

Audi AG, Ingolstadt, DE;

Attorney:

Henry M. Feiereisen LLC

Primary Examiner:

Erica E Cadugan

Int. Cl.
CPC ...
B23P 13/02 (2006.01); B23C 3/00 (2006.01); B23C 5/00 (2006.01); B23C 7/04 (2006.01); B23B 35/00 (2006.01); B23B 51/06 (2006.01); B23D 5/02 (2006.01); B23D 79/02 (2006.01); B23D 79/04 (2006.01); B23C 3/12 (2006.01); B23D 11/00 (2006.01); B23D 13/00 (2006.01); B23D 37/22 (2006.01); B23D 43/02 (2006.01); B23B 27/00 (2006.01); B23D 79/00 (2006.01); B21D 28/34 (2006.01); B23B 27/10 (2006.01);
U.S. Cl.
CPC ...
B23P 13/02 (2013.01); B21D 28/34 (2013.01); B23B 27/00 (2013.01); B23B 35/00 (2013.01); B23C 3/124 (2013.01); B23C 5/00 (2013.01); B23C 7/04 (2013.01); B23D 5/02 (2013.01); B23D 11/00 (2013.01); B23D 13/00 (2013.01); B23D 37/22 (2013.01); B23D 43/02 (2013.01); B23D 79/00 (2013.01); B23D 79/04 (2013.01); B23B 27/10 (2013.01); B23B 2215/24 (2013.01); B23B 2222/12 (2013.01); B23B 2226/125 (2013.01); B23B 2226/315 (2013.01); Y10T 29/49995 (2015.01); Y10T 29/5115 (2015.01); Y10T 29/5168 (2015.01); Y10T 408/03 (2015.01); Y10T 408/356 (2015.01); Y10T 408/45 (2015.01); Y10T 408/78 (2015.01); Y10T 408/89 (2015.01); Y10T 409/303808 (2015.01); Y10T 409/50082 (2015.01); Y10T 409/500984 (2015.01); Y10T 409/501804 (2015.01); Y10T 409/502788 (2015.01); Y10T 409/502952 (2015.01); Y10T 409/503116 (2015.01); Y10T 409/509348 (2015.01);
Abstract

The provided method and material-removing tool serve for producing an exact-fit cylindrical bore with a high degree of surface quality and a length that may be a multiple of the diameter from an existing bore with a finishing allowance. In order to reduce the time taken for the finishing by means of a reamer to be performed, it is proposed to use a tool in the form of an impact die, which is formed at the front end with a circular or substantially circular cutting edge, the diameter of which corresponds to the nominal diameter of the bore to be produced, and which tapers from directly behind the cutting edge or behind a front region of a certain length.

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