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AssigneeGohsyu Corporation
InventorsTadashi Okumura, Nobuyasu Nishihata, Kenji Tasaki
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To present a manufacturing apparatus of a plate-like tooth profile member capable of forging and forming in one process by using a closed type die, being hardly accompanied by burrs due to plastic changes in the circumferential direction and in the axial direction of the material of the plate-like tooth profile member. Consisting of an upper die 1 and a lower die 2 of closed type, the lower die 2 is composed of a tooth die 21 for forming a tooth portion in a material W of a plate-like tooth profile member, and movable dies 22, 22 movable relatively in a vertical direction to the tooth die 21 disposed at both sides in the axial direction of the material W of the plate-like tooth profile member of the tooth die 21, a first stroke is executed for confining the circumference at both end portions in the axial direction of the material W of the plate-like tooth profile member by the upper die 1 and the movable dies 22, 22, and a second stroke is executed for forming a tooth portion in the material W of the plate-like tooth profile member by the upper die 1 and the tooth die 21.
A manufacturing apparatus of a plate-like tooth profile member comprising an upper die and a lower die of closed type, wherein one die of the upper die and the lower die is composed of a tooth die for forming a tooth portion in a material of the plate-like tooth profile member, and a movable die movable relatively in a vertical direction to the tooth die disposed at both sides in the axial direction of the material of the plate-like tooth profile member of the tooth die, for executing a first stroke of confining the circumference at both end portions in the axial direction of the material of the plate-like tooth profile member by other die of the upper die and the lower die and the movable die, and a second stroke of forming a tooth portion in the material of the plate-like tooth profile member by the other die of the upper die and the lower die and the tooth die, and the tooth die is composed of a tooth surface forming die for forming a tooth portion in a material of a plate-like tooth profile member divided in a direction orthogonal to the axial direction of the material of the plate-like tooth profile member, and a tooth lateral surface forming die for forming a tooth lateral surface in the material of the plate-like tooth profile member, and the tooth lateral surface forming die is composed of a base body, and a tooth lateral surface forming piece for forming the tooth lateral surface of the material of the plate-like tooth profile member disposed detachably in the base body, and other die of the upper die and the lower die, and the tooth lateral surface forming piece contact flatly with each other in a plane.
2-3. (canceled)
Dependencies are inferred from the claim text.