Global Patent Index - EP 2162261 A2

EP 2162261 A2 20100317 - METHOD FOR THE SUPPORT OF A ROTATING WORKPIECE DURING GRINDING AND A HYDRODYNAMIC STEADY REST

Title (en)

METHOD FOR THE SUPPORT OF A ROTATING WORKPIECE DURING GRINDING AND A HYDRODYNAMIC STEADY REST

Title (de)

VERFAHREN ZUR UNTERSTÜTZUNG EINES ROTIERENDEN WERKSTÜCKS BEIM SCHLEIFEN UND HYDRODYNAMISCHE LÜNETTE

Title (fr)

PROCÉDÉ ET SUPPORT POUR SUPPORTER UNE PIÈCE ROTATIVE LORS DU MEULAGE ET LUNETTE HYDRODYNAMIQUE

Publication

EP 2162261 A2 (DE)

Application

EP 08774703 A

Priority

  • EP 2008058585 W
  • DE 102007031512 A

Abstract (en)

[origin: WO2009007301A2] The invention relates to a method for the hydrodynamic support and centering of a rotating workpiece during grinding and a steady rest (10) usable for this purpose. According to the method, 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 (10) has the opening (35) of a cross hole (34) in the hole (30) receiving the shaft 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.

IPC 8 full level

B24B 1/00 (2006.01); B24B 41/06 (2012.01)

CPC (source: EP)

B24B 5/421 (2013.01); B24B 19/12 (2013.01); B24B 41/065 (2013.01); B24B 41/067 (2013.01)

Citation (search report)

See references of WO 2009007301A2

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

DE 102007031512 A1 20090108; DE 102007031512 B4 20130131; AT 539848 T 20120115; CN 101678530 A 20100324; CN 101678530 B 20120201; EP 2162261 A2 20100317; EP 2162261 B1 20120104; ES 2380049 T3 20120508; JP 2010532270 A 20101007; JP 5307130 B2 20131002; RU 2010103984 A 20110820; RU 2460629 C2 20120910; US 2010181712 A1 20100722; US 8641025 B2 20140204; WO 2009007301 A2 20090115; WO 2009007301 A3 20090430

DOCDB simple family (application)

DE 102007031512 A 20070706; AT 08774703 T 20080703; CN 200880020005 A 20080703; EP 08774703 A 20080703; EP 2008058585 W 20080703; ES 08774703 T 20080703; JP 2010513987 A 20080703; RU 2010103984 A 20080703; US 66798708 A 20080703