Manufacturing method for toothed part and manufacturing device for toothed part
AssigneeAisin Aw Co., Ltd.
InventorsDaisuke Iwata, Tomoyuki Hori, Naoki Yokoyama, Hiroshi Shibata, Masayuki Maki
Life of this patent
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Abstract
A manufacturing method for a toothed part including a bottom surface portion and a side wall portion provided to extend upright from an outer peripheral end portion of the bottom surface portion, the side wall portion being formed with teeth. The manufacturing method includes a half drawing process of performing draw shaping on a material having a disk shape to form the bottom surface portion and the side wall portion, an inside diameter of which becomes larger in a direction away from the bottom surface portion; and a tooth shaping process of forming the teeth in the side wall portion.
Claims10
A manufacturing method for a toothed part including a bottom surface portion and a side wall portion that extends upright from an outer peripheral end portion of the bottom surface portion, the side wall portion being formed with teeth, the manufacturing method for the toothed part comprising:
- a half drawing process of performing draw shaping on a material having a disk shape with a toothed punch and a drawing die to form the bottom surface portion and the side wall portion such that an inside diameter of the side wall portion becomes larger in a direction away from the bottom surface portion and the side wall portion is conical in shape;
- and
- a tooth shaping process of forming the teeth in the side wall portion with the toothed punch and a tooth die, wherein:
- in the half drawing process, a distal-end portion of an opening end side of the side wall portion does not contact the toothed punch when the distal-end portion contacts an inner peripheral surface of the drawing die, and
- the tooth shaping process is performed after the distal-end portion contacts the inner peripheral surface of the drawing die.
Dependencies are inferred from the claim text.