| 摘要 |
Provided are a forging method, a forged-product molding apparatus, and a tripod type constant velocity universal joint which contribute to reduction of shear drop and avoidance of an increase in processing load generated through contact of a leading end surface of a shaft portion and dies even when an excessively-heavy raw material is mixed so that a life of the die can be prolonged. After molding a product-to-be-preliminarily-molded to form a preliminarily molded product (20A) as a material, the preliminarily molded product (20A) is put into a full-enclosed forging die (30) so that a product is molded with the full-enclosed forging die (30). On a preliminary leading-end surface to be formed as a leading end surface (17a) of a shaft portion (17) of the product formed of the preliminarily molded product (20A), there is formed a shear-drop suppressing portion (65) for suppressing thickness reduction on a boss-portion side of an outer peripheral portion of the leading end surface (17a) of the shaft portion (17) of the product (16). At a time of putting the preliminarily molded product (20A) into the full-enclosed forging die (30) so as to mold the product (16), a relief portion (26) is formed between the leading end surface (17a) of the shaft portion (17) to be formed and a cavity (24) of the full-enclosed forging die (30).
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