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1. WO2022210722 - BEARING DEVICE AND SPINDLE DEVICE

Publication Number WO/2022/210722
Publication Date 06.10.2022
International Application No. PCT/JP2022/015481
International Filing Date 29.03.2022
IPC
F16C 25/08 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
25Bearings for exclusively rotary movement adjustable for wear or play
06Ball or roller bearings
08self-adjusting
F16C 35/07 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
35Rigid support of bearing units; Housings, e.g. caps, covers
04in the case of ball or roller bearings
06Mounting of ball or roller bearings; Fixing them onto shaft or in housing
07Fixing them on the shaft or housing with interposition of an element
F16C 35/12 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
35Rigid support of bearing units; Housings, e.g. caps, covers
08for spindles
12with ball or roller bearings
F16C 41/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
41Other accessories for bearings
CPC
F16C 25/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
25Bearings for exclusively rotary movement adjustable for wear or play
06Ball or roller bearings
08self-adjusting
F16C 35/07
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
35Rigid support of bearing units; Housings, e.g. caps, covers
04in the case of ball or roller bearings
06Mounting ; or dismounting; of ball or roller bearings; Fixing them onto shaft or in housing
07Fixing them on the shaft or housing with interposition of an element
F16C 35/12
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
35Rigid support of bearing units; Housings, e.g. caps, covers
08for spindles
12with ball or roller bearings
F16C 41/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
41Other accessories, ; e.g. devices integrated in the bearing not relating to the bearing function as such
Applicants
  • NTN株式会社 NTN CORPORATION [JP]/[JP]
Inventors
  • 福島 靖之 FUKUSHIMA, Yasuyuki
  • 小池 孝誌 KOIKE, Takashi
  • 澁谷 勇介 SHIBUYA, Yusuke
Agents
  • 弁理士法人深見特許事務所 FUKAMI PATENT OFFICE, P.C.
Priority Data
2021-06068131.03.2021JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) BEARING DEVICE AND SPINDLE DEVICE
(FR) DISPOSITIF DE PALIER ET DISPOSITIF DE BROCHE
(JA) 軸受装置およびスピンドル装置
Abstract
(EN) A bearing device (30) comprises: at least one bearing (5a) including an outer ring (5ga), an inner ring (5ia), and a rolling element (Ta); a first member (6g) disposed on a path (P1) through which is transmitted a pressing force generating pre-compression between the rolling element (Ta) and each raceway surface of the outer ring (5ga) and the inner ring (5ia); a load sensor (50) disposed on the first member (6g); a temperature detector (60) disposed on the outer ring (5ga) or the first member (6g); and a load computation processing unit (70) that estimates the pre-compression on the basis of an output from the load sensor (50) and a change amount in a load value on the load sensor (50) due to thermal expansion of the outer ring (5ga) and the first member (6g), the thermal expansion corresponding to the output of the temperature detector (60). Through this, a bearing device and a spindle device that can accurately detect pre-compression of a bearing are provided.
(FR) Un dispositif de palier (30) comprend : au moins un palier (5a) comportant une bague externe (5ga), une bague interne (5ia), et un élément de roulement (Ta) ; un premier élément (6g) situé sur un trajet (P1) à travers lequel est transmise une force de pression générant une pré-compression entre l'élément de roulement (Ta) et chaque surface de chemin de roulement de la bague externe (5ga) et de la bague interne (5ia) ; un capteur de charge (50) situé sur le premier élément (6g) ; un détecteur de température (60) situé sur la bague externe (5ga) ou le premier élément (6g) ; et une unité de traitement de calcul de charge (70) qui estime la pré-compression sur la base d'une sortie provenant du capteur de charge (50) et d'une quantité de changement d'une valeur de charge sur le capteur de charge (50) due à la dilatation thermique de la bague externe (5ga) et du premier élément (6g), la dilatation thermique correspondant à la sortie du détecteur de température (60). Ainsi, l'invention concerne un dispositif de palier et un dispositif de broche qui peuvent détecter avec précision la pré-compression d'un palier.
(JA) 軸受装置(30)は、外輪(5ga)、内輪(5ia)および転動体(Ta)を含む少なくとも1つの軸受(5a)と、外輪(5ga)および内輪(5ia)の各軌道面と転動体(Ta)との間に予圧を発生させる押圧力が伝達する経路(P1)上に配置される第1の部材(6g)と、第1の部材(6g)に配置される荷重センサ(50)と、外輪(5ga)または第1の部材(6g)に配置される温度検出器(60)と、荷重センサ(50)の出力と、温度検出器(60)の出力に対応する外輪(5ga)および第1の部材(6g)の熱膨張による荷重センサ(50)への荷重値の変化量とに基づいて予圧を推定する荷重演算処理部(70)とを備える。これにより、軸受の予圧を正確に検出することが可能な軸受装置およびスピンドル装置を提供する。
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