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发明公开
EP3115635A1 MANUFACTURING METHOD OF ROTATING ELEMENT, CONNECTING STRUCTURE BETWEEN ROTATING ELEMENT AND ROTATING SHAFT, AND STEERING APPARATUS 审中-公开
方法产生旋转要素，结构连接的旋转元件与旋转轴和转向装置之间

MANUFACTURING METHOD OF ROTATING ELEMENT, CONNECTING STRUCTURE BETWEEN ROTATING ELEMENT AND ROTATING SHAFT, AND STEERING APPARATUS
摘要：
A manufacturing method of a rotating element including a cylindrical fitting portion having a pair of circumferential end portions forming an axial slit between the circumferential end portions, the cylindrical fitting portion being serration-fitted to a rotating shaft, includes: clamping the fitting portion (21, 21M) by a clamp jig (30) so that the fitting portion (21, 21M) is elastically deformed in an elliptical shape; forming a female serration (27) arranged in an elliptical shape by use of a tool (50) having an elliptical section, the female serration (27) being formed on an inner peripheral surface (21b) of the fitting portion (21, 21M) elastically deformed in the elliptical shape; and releasing the clamping by the clamp jig (30) so that the arrangement of the female serration (27) is changed to a perfect-circle shape from the elliptical shape.
摘要（中）：

旋转元件包括具有一对在轴向形成圆周方向端部的圆筒状的嵌合部的制造方法，该圆周方向端部之间缝隙的圆筒状的嵌合部为锯齿配合到旋转轴，包括：（夹紧嵌合部21 ，21M）通过一个夹紧夹具（30），所以没有（21，21M）的可弹性以椭圆形状变形的嵌合部; 形成通过使用具有上椭圆截面的工具（50）的在椭圆形状排列的阴锯齿（27），内花键齿（27）形成在与内周面（21B）的嵌合部（21，21M） 弹性变形在椭圆形状; 和释放由象雌锯齿的布置的夹紧夹具（30）夹紧（27）从椭圆形变化为完美圆形状。

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