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1. (WO2018199016) BALL BEARING
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Pub. No.: WO/2018/199016 International Application No.: PCT/JP2018/016445
Publication Date: 01.11.2018 International Filing Date: 23.04.2018
IPC:
F16C 35/063 (2006.01) ,F16C 19/06 (2006.01) ,F16C 33/58 (2006.01) ,F16C 43/08 (2006.01) ,F16H 1/32 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
C
SHAFTS; 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
35
Rigid support of bearing units; Housings, e.g. caps, covers
04
in the case of ball or roller bearings
06
Mounting of ball or roller bearings; Fixing them onto shaft or in housing
063
Fixing them on the shaft
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
C
SHAFTS; 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
19
Bearings with rolling contact, for exclusively rotary movement
02
with bearing balls essentially of the same size in one or more circular rows
04
for radial load mainly
06
with a single row of balls
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
C
SHAFTS; 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
33
Parts of bearings; Special methods for making bearings or parts thereof
30
Parts of ball or roller bearings
58
Raceways; Race rings
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
C
SHAFTS; 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
43
Assembling bearings
04
Assembling rolling contact bearings
06
Placing rolling bodies in cages or bearings
08
by deforming the cages or the races
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
H
GEARING
1
Toothed gearings for conveying rotary motion
28
with gears having orbital motion
32
in which the central axis of the gearing lies inside the periphery of an orbital gear
Applicants:
NTN株式会社 NTN CORPORATION [JP/JP]; 大阪府大阪市西区京町堀1丁目3番17号 3-17, Kyomachibori 1-chome, Nishi-ku, Osaka-shi, Osaka 5500003, JP
Inventors:
林 康由 HAYASHI Yasuyoshi; JP
Agent:
鎌田 直也 KAMADA Naoya; JP
鎌田 文二 KAMADA Bunji; JP
中谷 弥一郎 NAKATANI Yaichiro; JP
Priority Data:
2017-08710726.04.2017JP
Title (EN) BALL BEARING
(FR) ROULEMENT À BILLES
(JA) 玉軸受
Abstract:
(EN) The present invention prevents, when strain wave gearing is used, the occurrence of displacement of a ball bearing (1) that is interposed between a flexspline (3) and a cam (4), the displacement being caused by a thrust force acting on the ball bearing (1), and also prevents an inner ring (5) from being cracked due to interference between the inner ring (5) and the cam (4). The ball bearing (1) is configured such that, when the ellipse circumferential length of an outer periphery (4a) formed into an elliptical shape on the cam (4) is L1, and the circumferential length of an inner surface (5a) of the inner ring (5) is L2, the value of L1/L2 falls within the range from 1.0001 to 1.0007.
(FR) La présente invention empêche, lorsqu'un engrenage à ondes de déformation est utilisé, l'apparition d'un déplacement d'un roulement à billes (1) qui est interposé entre une cannelure souple (3) et une came (4), le déplacement étant provoqué par une force de poussée agissant sur le roulement à billes (1), et empêche également une bague interne (5) d'être fissurée en raison d'une interférence entre la bague interne (5) et la came (4). Le roulement à billes (1) est configuré de telle sorte que, lorsque la longueur circonférentielle d'ellipse d'une périphérie externe (4a) formée en une forme elliptique sur la came (4) est L1, et la longueur circonférentielle d'une surface interne (5a) de la bague intérieure (5) est L2, la valeur de L1/L2 se situe dans la plage allant de 1,0001 à 1,0007.
(JA) 波動歯車装置の使用時、フレクスプライン(3)とカム(4)との間に介在する玉軸受(1)に作用するスラスト力による玉軸受(1)のずれ動きが生じないようにすると共に、内輪(5)とカム(4)間の締め代による内輪(5)の割れを防ぐ。カム(4)に楕円状に形成された外周面(4a)の楕円周長をLとし、内輪(5)の内径面(5a)の円周長をLとしたとき、L/Lの値が1.0001以上1.0007以下である玉軸受(1)とする。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)