Patent · US Active

Method for the support of a rotating workpiece during grinding and a hydrodynamic steady rest

US8641025B2 · kind B2 · utility

0Cited by

12References

9Claims

0Family size

Assignee

Erwin Junker Maschinenfabrik GmbH · DE

Inventors

Georg Himmelsbach · Lenzkirch, DE
Hubert Mueller · Nordrach, DE

Key dates

Filing date	Jul 3, 2008
Grant date	Feb 4, 2014
Priority date	—
Expiry date	Nov 4, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB24B41/067
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

In a method for the hydrodynamic support and centering of a rotating workpiece during grinding and a steady rest usable for this purpose the bearing to be supported is impinged upon by a contact pressure which changes in accordance with rotational speed from a minimum pressure when the shaft is started from a standstill, to a maximum value during the processing rotational speed. The steady rest has an opening of a transversebore in a central bore receiving a supply line by which a lubricant can be supplied as hydraulic fluid to the bearing. The method is particularly suitable for the processing of camshafts and crankshafts.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.