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    • 3. 发明申请
    • Raceway Ring for Radial Ball Bearing and Manufacturing Method Thereof, and Manufacturing Method of High Accurate Ring and Manufacturing Apparatus Thereof
    • 径向球轴承的滚道环及其制造方法及其制造方法及制造方法
    • US20080089631A1
    • 2008-04-17
    • US11663473
    • 2005-09-20
    • Kazuto KobayashiKiyoshi OotsukaIsao ShintouKouhei MoriYu Yasuda
    • Kazuto KobayashiKiyoshi OotsukaIsao ShintouKouhei MoriYu Yasuda
    • F16C33/58B21J5/00B21K1/04
    • F16C33/64B21H1/12B21K1/04B23P15/003F16C19/06Y10T29/49689
    • A manufacturing method of a raceway ring for a radial ball bearing, the radial ball bearing has the raceway ring has at least one of an outer ring formed with an outer ring raceway, of which sectional shape is arcuate, and which is formed entire of circumference on an axially intermediate portion of an inner circumferential face as a raceway surface; and an inner ring formed with an inner ring raceway, of which sectional shape is arcuate, and which is formed entire of circumference on an axially intermediate portion of an outer circumferential face as the raceway surface and plurality of balls rollably provided between the inner ring raceway and the outer ring raceway. The manufacturing method of the raceway ring has a high accurate material working process of preparing a high accurate material of which volume is substantially the same as that of the raceway ring of the radial ball bearing which is a finished product by cold working and a raceway ring working process of plastically deforming the high accurate material by cold working and forming the raceway surface on the axially intermediate portion of either outer or inner circumferential face wherein working for removing material is not conducted before a heat treatment.
    • 一种用于径向球轴承的滚道环的制造方法,具有滚道环的径向球轴承具有形成有外圈滚道的外圈中的至少一个,其截面形状为弓形,并且形成为整个圆周 在作为滚道面的内周面的轴向中间部分上; 以及形成有内圈滚道的内圈,其截面形状为弓形,并且在作为滚道面的外周面的轴向中间部分上形成为圆周,并且多个滚珠可滚动地设置在内圈滚道之间 和外圈滚道。 滚道环的制造方法具有高准确的材料加工过程,其制备高精度材料,其体积与作为成品的径向球轴承的滚道环的体积基本相同,通过冷加工和滚道环 通过冷加工使高精度材料塑性变形的工作过程,并且在外周面或内周面的轴向中间部分上形成滚道表面,其中除去材料的工作在热处理之前不进行。
    • 6. 发明授权
    • Steering rack and method of manufacturing the same
    • 转向架及其制造方法
    • US08156781B2
    • 2012-04-17
    • US12090223
    • 2006-10-12
    • Kazuto KobayashiKotaro HirotaKiyoshi Ootsuka
    • Kazuto KobayashiKotaro HirotaKiyoshi Ootsuka
    • B21D17/02B21D22/02
    • B21D15/04B21K1/063B21K1/768B62D3/126Y10T29/49474Y10T74/1967
    • When a punch is downwardly pressed, an inner circumferential surface of a first rack blank bites into a top surface of a second rack blank. A blank material upwardly flows due to a reaction force and is used to form rack teeth. Thus, a filling degree of the teeth with the material is enhanced. At the time when the forming of the rack teeth is finished, a gap is left between the inner circumferential surface of the first rack blank and the outer circumferential surface of the second rack blank. Thus, a die is not put into a sealed condition. Consequently, a forming load is small so that the lifetime of the die is lengthened. Also, the top surface of the second rack blank bites into a bore hole portion of the first rack blank so that the first rack blank and the second rack blank are joined together. Accordingly, the rigidity of the entire rack teeth is increased.
    • 当向下按压冲头时,第一齿条坯料的内圆周表面咬入第二齿条坯料的顶表面。 空白材料由于反作用力而向上流动并用于形成齿条齿。 因此,增加了与材料的牙齿的填充度。 在齿条齿的形成结束时,在第一齿条毛坯的内周面和第二齿条毛坯的外周面之间留有间隙。 因此,模具不会被置于密封状态。 因此,成形载荷小,使得模具的寿命延长。 此外,第二齿条坯料的顶面咬入第一齿条毛坯的钻孔部,使第一齿条毛坯和第二齿条毛坯接合在一起。 因此,整个齿条齿的刚度提高。