BEARING UNIT AND SPINDLE DEVICE FOR MACHINE TOOL EQUIPPED THEREWITH

PROBLEM TO BE SOLVED: To provide a bearing unit having simple construction for enduring great axial force, and to provide a spindle device for a machine tool equipped therewith. SOLUTION: The bearing unit comprises an inner ring 13 mounted on an inside member 2, an outer ring 14 mounted on an outsid...

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Hauptverfasser:	FUJIOKA KAZUYA, ARAYA HIDEKI, MOCHIZUKI AKIHIRO, NISHIKI TAKAHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	BEARINGS BLASTING BORING COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MACHINE TOOLS MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS THERMAL INSULATION IN GENERAL TRANSPORTING TURNING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a bearing unit having simple construction for enduring great axial force, and to provide a spindle device for a machine tool equipped therewith. SOLUTION: The bearing unit comprises an inner ring 13 mounted on an inside member 2, an outer ring 14 mounted on an outside member 6, a bearing 10 having a number of rolling elements 15 arranged between the outer ring 14 and the inner ring 13, and a transmitting direction changing means A for transmitting axial force F from the inner ring 13 to the outside member 6 when the axial force F transmitted from the inside member 2 to the inner ring 13 is a predetermined value or greater. COPYRIGHT: (C)2008,JPO&INPIT