FORM ROLLING METHOD OF GEAR SHAPED MEMBER

摘要

PROBLEM TO BE SOLVED: To provide a form rolling method capable of suppressing overloading to a die while maintaining a dimensional precision of a form rolled tooth part and extending a life of a tool die. SOLUTION: A movement suppression means 5 to suppress a stock 1 from relatively moving along the axial direction for a tool die 4 is arranged as facing a restriction side part 44 at the other end side in the axial direction of the tool die 4. A relief space 6 of a material stock of the stock 1 is arranged between a tooth working part 41 of the tool die 4 and the movement suppression means 5. The material stock bulged toward one side (B1 direction) of the stock in form rolling is restricted by a restriction side part 44 of the tool die 4. The material stock bulged toward the other end side (B2 direction) in the axial direction of the tool die 4 is relieved to the relief space 6. The relative movement of the stock 1 along the axial direction resulting from the restriction due to the restricting side part 44 of the tool die 4 is suppressed by the movement suppression means 5.