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    • 7. 发明授权
    • Coil spring forming apparatus and coil spring formed thereby
    • 由此形成线圈弹簧成形装置和螺旋弹簧
    • US08667825B2
    • 2014-03-11
    • US13620113
    • 2012-09-14
    • Takashi Eto
    • Takashi Eto
    • B21F3/04
    • F16F1/047B21F3/04B21F35/00
    • A coil spring forming apparatus including a core bar 2 which rotates around an axis thereof and on which a wire material W fed from a wire material-feeding means is wound; a clamping portion 22 which rotates integrally with the core bar 2 and grips an end of the wire material W on the core bar 2; and first guide rollers 30 and second guide rollers 40 for guiding the wire material W onto the core bar 2; wherein the first guide rollers 30 and the second guide rollers 40 are provided so as to move independently from each other in parallel with the axis of the core bar 2, and a coil spring formed by the above coil spring forming apparatus.
    • 一种螺旋弹簧形成装置,其包括绕其轴线旋转并且从线材进给装置供给的线材W的芯棒2; 夹紧部22,其与芯棒2一体地旋转并且夹持芯棒2上的线材W的端部; 以及用于将线材W引导到芯棒2上的第一导辊30和第二导辊40; 其中第一导辊30和第二导辊40设置成与芯棒2的轴线平行地彼此独立地移动,以及由上述螺旋弹簧形成装置形成的螺旋弹簧。
    • 10. 发明申请
    • COMPRESSION COIL SPRING AND MANUFACTURING DEVICE AND MANUFACTURING METHOD FOR COIL SPRING
    • 压缩螺旋弹簧和制造装置及线圈弹簧的制造方法
    • US20120013059A1
    • 2012-01-19
    • US13244529
    • 2011-09-25
    • Toshio HamanoHideki OkadaKenji Yamamotoya
    • Toshio HamanoHideki OkadaKenji Yamamotoya
    • F16F1/04B21F3/04
    • B21F3/04B21F35/00F16F1/04
    • Bending deformation exceeding a yield stress is applied by winding a material on a mandrel. Coiling is performed simultaneously with the application of the bending deformation, and the load is removed after the coiling. This spring includes an outside surface region having a compressive residual stress and a compressive stress reduction region in which the compressive residual stress is reduced from the outside surface region toward the center of the material. A stress change portion at which a change from the compressive residual stress to a tensile residual stress occurs exists between the outside surface region and the center of the material. The spring further includes a tensile stress peak portion, tensile stress reduction region, and inside surface region. The inside surface region has the tensile compressive residual stress having an absolute value smaller than that of the outside surface region.
    • 通过将材料缠绕在心轴上来施加超过屈服应力的弯曲变形。 在施加弯曲变形的同时进行卷取,并且在卷取之后除去负载。 该弹簧包括具有压缩残余应力的外表面区域和压缩残余应力从外表面区域朝向材料的中心减小的压缩应力减小区域。 在外表面区域和材料的中心之间存在从压缩残余应力向拉伸残余应力的变化的应力变化部。 弹簧还包括拉伸应力峰部分,拉伸应力减小区域和内表面区域。 内表面区域的拉伸压缩残余应力的绝对值小于外表面区域的绝对值。