SPINDLE BEARING LUBRICATION STRUCTURE

• Main Authors: OUCHI HISAO, KASAI SHOJI, TAKAMURA SEIZO
• Format: Patent
• Language: English
• Published: 20.05.2004
• Edition: 7
• Subjects: BEARINGS; BLASTING; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERATION; 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; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

PROBLEM TO BE SOLVED: To provide a spindle bearing lubrication structure wherein effectively utilizing the motor output in machining a work. SOLUTION: A spindle 20 has a tool-fitting screw hole 20g in the front end thereof, and is supported by a casing 10 via rolling bearings 22 and 28. A rotor 24 to constitute a motor is fixed to the spindle 20, and a stator 14 is disposed therearound. Nozzles 33 and 35 to feed oil mist are disposed on parts corresponding to the bearings 22 and 28. These nozzles 33 and 35 are provided to spray oil mist from the upstream side toward the downstream side in a rotational direction of the spindle 20 with respect to the bearings 22 and 28. COPYRIGHT: (C)2004,JPO