公开(公告)号：US5473960A

公开(公告)日：1995-12-12

申请号：US208330

申请日：1994-03-10

申请人： Hideji Sakamoto ,  Masayoshi Ozawa ,  Seiji Kanuki ,  Kenji Hoshino ,  Toshiaki Tanaka

发明人： Hideji Sakamoto ,  Masayoshi Ozawa ,  Seiji Kanuki ,  Kenji Hoshino ,  Toshiaki Tanaka

IPC分类号： B62D3/12 ,  C21D1/10 ,  C21D9/00 ,  C21D9/32 ,  F16H55/26 ,  F16H19/04 ,  H05B6/14

CPC分类号： C21D1/10 ,  B21K1/768 ,  B62D3/12 ,  C21D9/0068 ,  F16H55/26 ,  C21D2221/00 ,  C21D9/32 ,  Y02P10/253 ,  Y10T74/1967

摘要： A steering rack shaft having a shaft body and rack teeth formed in a predetermined axial region of the shaft body. This steering rack shaft is formed such that a workpiece is quenched, and is then heated for a predetermined time at a temperature exceeding 400.degree. C. so as to be thermally refined, and the rack teeth are subsequently formed. After the formation of the rack teeth, high-frequency induction hardening is provided to form a teeth-hardened layer. Hence, the machining of the rack teeth is facilitated while reducing strain, and the rigidity and toughness of the overall steering rack shaft are improved.

摘要翻译： 一种转向齿条轴，其具有形成在轴体的预定轴向区域中的轴体和齿条齿。 该转向齿条轴形成为使工件淬火，然后在超过400℃的温度下加热预定时间以进行热精炼，随后形成齿条齿。 在形成齿条齿之后，提供高频感应淬火以形成齿硬化层。 因此，齿轮齿的加工变得容易，同时减小了应变，提高了整个转向齿条轴的刚度和韧性。