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2. 发明申请

US20100162843A1 RACK AND MANUFACTURING METHOD THEREOF 审中-公开
标题翻译：其框架及其制造方法
公开(公告)号：US20100162843A1
公开(公告)日：2010-07-01
申请号：US12447785
申请日：2007-10-30
申请人： Kazuto Kobayashi , Yuki Mizushima , Kotaro Hirota , Akira Tsubouchi
发明人： Kazuto Kobayashi , Yuki Mizushima , Kotaro Hirota , Akira Tsubouchi
IPC分类号： F16H19/04 , B21D31/00
CPC分类号： F16H55/26 , B21J5/12 , B21K1/767 , Y10T29/49467 , Y10T29/49472 , Y10T29/49474 , Y10T74/1967
摘要： To sufficiently secure the width dimension, strength and rigidity of the rack teeth 10, and to realize the light weight construction and the manufacturing method of the rack 8, the rack teeth 10 is formed by plastic working on one side surface in the radial direction of part in the axial direction of a rod unit 9 having a circular cross-sectional shape, and the curvature radius of the portion which is separated in the radial direction from the portion where the rack teeth 10 is formed, is made greater than that of the cross sectional shape of the outer surface of the axial remaining portion of the rod unit 9. For this purpose, as shown in (A) to (B), while a portion in the circumferential direction of part in the axial direction of a material 13 is compressed, the remaining portion in the circumferential direction of this part in the axial direction is formed into a partial cylindrical surface 17 whose curvature radius is larger than that of the outer surface of the material 13, to form an intermediate material 20. Then, as shown in (C) to (D), the rack teeth 10 are formed on the circumferential portion of the axial part of the intermediate material 20. At last, as shown in (E) to (F), sizing is performed to obtain the rack 8.
摘要翻译：为了充分确保齿条齿10的宽度尺寸，强度和刚性，为了实现齿条8的轻量化结构和制造方法，齿条齿10通过塑料加工形成在一个侧面上具有圆形横截面形状的杆单元9的轴向部分，以及沿着径向与形成齿条齿10的部分分开的部分的曲率半径大于为此，如（A）〜（B）所示，在材料13的轴向部分的圆周方向的一部分被压缩，该部分在轴向方向上的剩余部分形成为曲率半径大于材料13的外表面的部分圆柱形表面17，以用于然后，如（C）至（D）所示，齿条齿10形成在中间材料20的轴向部分的圆周部分上。最后，如（E）至（ F），进行尺寸调整以获得架子8。

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