A linear motion shaft, in which a first shaft and a second shaft are coupled by friction welding, has improved coaxiality between a section having a first input part and a section having a second input part. A screw shaft (29), which is the first shaft, is provided with a gripping part (56) for centering. While the gripping part (56) of the screw shaft (29) is gripped by a first gripping tool (57) for centering, and a rack shaft (28), which is the second shaft, is gripped by a second gripping tool (58) for centering, the first gripping tool (57) and/or the second gripping tool (58) is rotationally driven. This action causes an axial direction end of the rack shaft (28) and an axial direction end of the screw shaft (29) to abut each other while the screw shaft (29) and the rack shaft (28) are rotated relative to each other, and as a result the rack shaft (28) and the screw shaft (29) are coupled by friction welding.
关于通过摩擦压接结合第一轴部和第二轴部的直线驱动轴,提高具有第一输入部的部分与具有第二输入部的部分的同轴度。在作为第一轴部的丝杠轴部(29)设置定心用的把持部(56),利用定心用的第一把持件(57)把持丝杠轴部(29)的把持部(56),而且利用定心用的第二把持件(58)把持作为第二轴部的齿条轴部(28),在该状态下,旋转驱动第一把持件(57)和第二把持部(58)中的至少一方的把持部,由此使丝杠轴部(29)和齿条轴部(28)相对旋转,并且使齿条轴部(28)和丝杠轴部(29)的轴向端部彼此对顶,从而通过摩擦压接结合齿条轴部(28)和丝杠轴部(29)。
LINEAR MOTION SHAFT FOR STEERING DEVICE, STEERING DEVICE, AND METHOD OF MANUFACTURING THESE
转向装置用的直线驱动轴、转向装置以及它们的制造方法
2021-08-24
Patent
Electronic Resource
Chinese
IPC: | B21H MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS , Herstellen besonderer Gegenstände aus Metall durch Walzen, z.B. Schrauben, Räder, Ringe, Büchsen, Kugeln / B21K MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS , Herstellen von Schmiede- oder Presserzeugnissen aus Metall, z.B. Hufeisen, Nieten, Bolzen oder Rädern / B23K Löten , SOLDERING OR UNSOLDERING / B62D MOTOR VEHICLES , Motorfahrzeuge / F16H Getriebe , GEARING |
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