EP 1853829 A1 20071114 - HIGH-SPEED MOVABLE BEARING IN PARTICULAR FOR THE MOUNTING OF A MAIN SPINDLE OF A MACHINE TOOL
Title (en)
HIGH-SPEED MOVABLE BEARING IN PARTICULAR FOR THE MOUNTING OF A MAIN SPINDLE OF A MACHINE TOOL
Title (de)
HOCHGESCHWINDIGKEITSLOSLAGER, INSBESONDERE ZUR LAGERUNG DER HAUPTSPINDEL EINER WERKZEUGMASCHINE
Title (fr)
ROULEMENT LIBRE HAUTE VITESSE DESTINE, EN PARTICULIER, A LOGER LA BROCHE PRINCIPALE D'UNE MACHINE-OUTIL
Publication
Application
Priority
- DE 2006000341 W 20060224
- DE 102005009921 A 20050304
Abstract (en)
[origin: WO2006092120A1] According to the invention, the high-speed moving bearing (1) is embodied as an automatically-compensating movable ball bearing with several adjacent races of balls (6, 7, 8, 9, 10) with operation-dependent radial thermal expansion of the bearing rings (2, 3), the bearing rings (2, 3) of which are only in supporting contact with one ball race (8) in the cold state for the high-speed movable bearing (1), by means of a convex embodiment of the running surfaces (5) for the roller bodies (4) on the inner bearing ring (2). With increasing thermal expansion and expansion due to centrifugal force of both bearing rings (2, 3), the further ball races (6, 7, 9, 10) come sequentially into such a contact position with both bearing rings (2, 3) as a result of an elastic radially-flexible embodiment of both bearing rings (2, 3), that the bearing rings (2, 3) at the operating temperature for the high-speed moving bearing (1) are in supporting contact with all ball races (6, 7, 8, 9, 10).
IPC 8 full level
F16C 19/08 (2006.01); F16C 27/04 (2006.01)
CPC (source: EP US)
F16C 19/08 (2013.01 - EP US); F16C 27/04 (2013.01 - EP US); F16C 33/58 (2013.01 - EP US); F16C 2322/39 (2013.01 - EP US); Y10T 409/309352 (2015.01 - EP US)
Citation (search report)
See references of WO 2006092120A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102005009921 A1 20060907; CN 101133255 A 20080227; EP 1853829 A1 20071114; JP 2008536059 A 20080904; US 2008247698 A1 20081009; WO 2006092120 A1 20060908
DOCDB simple family (application)
DE 102005009921 A 20050304; CN 200680007143 A 20060224; DE 2006000341 W 20060224; EP 06706010 A 20060224; JP 2008502235 A 20060224; US 81756906 A 20060224