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    • 5. 发明公开
    • Fixed type constant velocity universal joint
    • 宇宙大师Festgleichlaufgelenk
    • EP1770298A1
    • 2007-04-04
    • EP07001115.0
    • 2004-08-31
    • NTN CORPORATION
    • Kobayashi, MasazumiNakagawa, TohruKobayashi, TomoshigeNakamura, Masamichi
    • F16D3/224F16D3/223
    • F16D3/2237F16D3/223F16D3/2245F16D2003/22303F16D2003/22309Y10S464/906
    • There is provided a fixed type constant velocity universal joint comprising an outer joint member (1) having eight arcuate guide grooves (1b) extending in the axial direction in an inner spherical surface (1a) thereof, an inner joint member (2) having eight arcuate guide grooves (2b) extending in the axial direction in an outer spherical surface (2a) thereof, eight balls (3) disposed between the guide grooves (1b) of the outer joint member (1)and guide grooves (2b) of the inner joint member (2), and a cage (4) interposed between the outer joint member (1) and inner joint member (2) for retaining the balls (3). The center (P) of guide grooves (1b) of the outer joint member (1) is offset from the center (O) of the inner spherical surface (1a), and the center (Q) of the guide grooves (2b) of the inner joint member (2) is offset from the center (O) of the outer spherical surface (2a) by equal distance (F) to opposite sides in the axial direction. The constant velocity joint is an undercut free type constant velocity joint and the relationship 0.65
    • 提供了一种固定式等速万向接头,包括:外接头构件(1),其具有在其内球面(1a)中沿轴向延伸的八个弓形引导槽(1b),具有八个 在外球面(2a)中沿轴向延伸的弓形引导槽(2b),设置在外接头构件(1)的引导槽(1b)和引导槽(2b)之间的八个球(3) 内侧接头构件(2)和夹在外侧接头构件(1)和保持球(3)的内侧接头构件(2)之间的保持架(4)。 外侧接头构件(1)的导向槽(1b)的中心(P)偏离内侧球面(1a)的中心(O),导向槽(2b)的中心 内侧联接构件(2)从外球面(2a)的中心(O)偏移到轴向相对侧的距离(F)。 等速万向节是无切削等速万向节,建立了0.65 <= B / A <= 0.85的关系,其中A代表保持架(4)的壁厚,B代表球的径向位移(3 )在最大关节角度。
    • 9. 发明公开
    • Fixed-type constant-velocity universal joint
    • 固定等速万向节
    • EP1705395A3
    • 2009-08-19
    • EP06251417.9
    • 2006-03-16
    • NTN Corporation
    • Hoshino, ManabuNakagawa, TohruTone, HiroshiSuganuma, Wasaburo
    • F16D3/16
    • F16D3/2237F16D3/223F16D2003/22303Y10S464/906
    • Internal dimensions for fixed-type constant velocity universal joints are defined to optimize the geometry of the components of the joints and to readily achieve a larger operating angle of the joints.
      In the joint, the track grooves of an outer ring (10) and an inner ring (20) are tapered by an angle not exceeding 12°. The ratio (f/PCR) of the cage (40) offset amount f to PCR is greater than 0 and smaller than or equal to 0.12. The ratio (Do/d) of the cage (40) outer diameter (Do) to the ball (30) diameter (d), the ratio (t/d) of the cage wall thickness (t) to the ball (30) diameter (d), and the ratio (w/d) of the cage width (w) to the ball diameter (d) are such that 3.9 ≤ Do/d ≤ 4.1, 0.31 ≤ t/d ≤ 0.34, and 1.8 ≤ w/d ≤ 2.0, respectively. The end of the spherical outer surface (42) of the cage (40) adjacent to the open end is axially extended, and the end of the spherical inner surface (44) of the cage adjacent to the open end is tapered so that the tapered surface has an increasing diameter toward the end of the spherical outer surface (42) adjacent to the open end. Part of the spherical outer surface (42) of the cage (40) is cut on the open end side of pockets (46), and the outer diameter of the cage (40) across the two opposing planer cut faces is smaller than the spigot diameter of the outlet ring (10).
    • 10. 发明公开
    • A method of fabricating a power transmission shaft
    • Eine Methode zur Herstellung einerKraftübertragungswelle
    • EP2065605A2
    • 2009-06-03
    • EP09001944.9
    • 2004-11-12
    • NTN Corporation
    • Sakurai, KatsuhiroNakagawa, Tohru
    • F16D1/06F16D3/02
    • F16D3/02F16D1/06F16D3/06F16D2001/103Y10S464/906Y10T403/7035
    • A method of fabricating a power transmission shaft having axial teeth in an outer periphery thereof in order to transmit torque between the teeth (21) and an associated member through tooth surfaces (21c), an end of a valley section (21a) of the tooth (21) leading to an outer surface of the power transmission shaft through a diameter expansion surface (22), the diameter of which is enlarged in an axial direction, wherein a first blunt section is provided in a corner (C1) between the diameter expansion surface (22) and the tooth surface (21c) adjacent to the diameter expansion surface (22) in order to blunt an edge between them,
      the method comprising forming the blunt sections simultaneously with the teeth (21) during a form rolling step.
    • 为了通过齿面(21c)在牙齿(21)和相关联的构件之间传递转矩,制造在其外周具有轴向齿的动力传递轴的方法,齿的谷部(21a)的端部 (21),其通过其直径在轴向方向上扩大的直径膨胀面(22)通向所述动力传递轴的外表面,其中在所述直径膨胀部(22)的角部(C1)中设置有第一钝部, 表面(22)和邻近直径膨胀表面(22)的齿表面(21c),以使它们之间的边缘钝化,所述方法包括在成形轧制步骤期间与齿(21)同时形成钝部。