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    • 4. 发明授权
    • Method for manufacturing drive shaft
    • 驱动轴的制造方法
    • US09375769B2
    • 2016-06-28
    • US14327349
    • 2014-07-09
    • Jong Hoon Jung
    • Jong Hoon JungDong Gun Kim
    • B21C1/24B21D53/84B21D41/04B21C3/16B21C3/02B21C9/00F16C3/02
    • B21C1/24B21C1/003B21C1/18B21C3/02B21C3/16B21C9/00B21D41/04B21D53/84B21D53/88B21K1/10C21D2221/00F16C3/02F16C3/023F16C2220/42
    • Disclosed in a method for manufacturing a drive shaft which comprises forming a first shaft unit by shrinking one side of a metallic pipe which has a uniform first strength; decreasing the thickness of an intermediate portion of the metallic pipe by drawing the intermediate portion of the metallic pipe which is integral with the first shaft unit; forming at an inner side surface of the other side of the metallic pipe a strength decrease unit which has a second strength smaller than the first strength, by heat-treating by a predetermined distance the inner side surface of the other side being opposite to one side of the metallic pipe; and forming a second shaft unit without transforming any portion of the intermediate portion by shrinking the metallic pipe which has the strength decrease unit, wherein the second shaft unit is formed by applying compression force to a portion where the strength decrease unit in the metallic pipe is formed, in a predetermine direction being vertical with respect to the axial direction of the metallic pipe.
    • 一种驱动轴的制造方法,其特征在于,包括:通过收缩具有均一的第一强度的金属管的一侧来形成第一轴单元; 通过拉拔与第一轴单元成一体的金属管的中间部分来减小金属管的中间部分的厚度; 在所述金属管的另一侧的内侧表面上形成强度降低单元,所述强度降低单元具有比所述第一强度小的第二强度,通过将另一侧的内侧表面与一侧相反地预定距离进行热处理 的金属管; 并且通过使具有强度降低单元的金属管收缩而形成第二轴单元而不使中间部的任何部分变形,其中第二轴单元通过对金属管中的强度降低单元的部分施加压力而形成 在相对于金属管的轴向垂直的预定方向上形成。