LUBRICATION STRUCTURE OF BEARING DEVICE

• Main Authors: MIZUTANI MAMORU, MORI MASATSUGU, ONDA YUJI
• Format: Patent
• Language: English; Japanese
• Published: 24.11.2017
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide a lubrication structure of a bearing device capable of excellently lubricating a rolling bearing, and efficiently cooling an inner ring of the rolling bearing, an inner ring spacer and a main shaft fitted into inner peripheries thereof.SOLUTION: A bearing device is configured such that an outer ring spacer 4 and an inner ring spacer are respectively interposed between outer rings of a plurality of rolling bearings and between inner rings 3 thereof, the rolling bearings aligned in an axis direction; the outer rings and the outer ring spacers 4 are installed in the housing; and the inner ring 3 and the inner ring spacers are fitted to a main shaft. In the outer ring spacer 4, provided is a nozzle 12 configured to spray lubrication fluid to an outer peripheral surface of the inner ring 3 or inner ring spacer and supply it to the rolling bearing, the lubrication fluid comprising a mixture of air and oil, or only oil. The nozzle 12 is provided so as to make a discharge port side inclined forward in a rotation direction of the main shaft.SELECTED DRAWING: Figure 3 【課題】 転がり軸受を良好に潤滑することができ、かつ転がり軸受の内輪、内輪間座、およびこれらの内周に嵌合する主軸を効率良く冷却できる軸受装置の潤滑構造を提供する。【解決手段】 軸受装置は、軸方向に並ぶ複数の転がり軸受の外輪間および内輪３間に外輪間座４および内輪間座をそれぞれ介在させ、外輪および外輪間座４がハウジングに設置され、内輪３および内輪間座が主軸に嵌合される。外輪間座４に、内輪３または内輪間座の外周面に対してエアと油の混合物または油のみからなる潤滑用流体を吹き付けて転がり軸受に供給するノズル１２を設ける。このノズル１２は、吐出口側を主軸の回転方向の前方へ傾斜させて設ける。【選択図】 図３