| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a tooth profile component, a manufacturing apparatus for a tooth profile component, and a tooth profile component, capable of extending the life of a forming die. <P>SOLUTION: In the method of manufacturing a differential pinion gear 12 by using a forming die based on a cylindrical material 10, a load is applied along axial direction to a central portion 27 of the material 10 while constraining a part of an outer peripheral surface 22 of the material 10, so that the material of component is caused to flow toward the outside, for forming a bevel gear part 11 at an outside portion 43 of the material 10. At that time, the constraint area of the outer peripheral surface 22 of the material 10 is reduced while the component of an intermediate portion 45 of the material 10 is caused to flow along axial direction toward a material escaping part 32, to form a projection part 46. At the time when the load becomes largest, spaces 33 and 47 are provided between the bevel gear part 11 and a tooth profile forming die 16 as well as between the projection part 46 and the tooth profile forming die 16. <P>COPYRIGHT: (C)2012,JPO&INPIT |
