JP-2026074599-A - Forging dies

JP2026074599AJP 2026074599 AJP2026074599 AJP 2026074599AJP-2026074599-A

Abstract

[Problem] To provide a forging die that can suppress the occurrence of material loss. [Solution] The forging die 10 comprises an upper die 11 having an inner upper die 14 and an outer upper die 15, and a lower die 12 that forms a molding space together with the upper die 11, and the fitting surfaces 18 of the inner upper die 14 and the intermediate upper die 16, and the fitting surfaces 19 of the outer upper die 15 and the intermediate upper die 16 are designed to allow the entry of a release agent. [Selection Diagram] Figure 1

Inventors

平田隆介

Assignees

トヨタ自動車株式会社

Dates

Publication Date: 20260507
Application Date: 20241021

Claims (1)

An upper mold having an inner upper mold, an intermediate upper mold, and an outer upper mold, The system comprises a lower mold that forms a molding space together with the upper mold, A forging die in which the fitting surfaces of the inner upper die and the intermediate upper die, and the fitting surfaces of the outer upper die and the intermediate upper die, are each capable of allowing a release agent to enter.

Description

This invention relates to a forging die. Patent Document 1 describes a forging die comprising an inner die for forming the upper surface of a product and an outer die for forming the outer surface of a product. Japanese Patent Publication No. 2018-192484 This is a cross-sectional view showing an example of a forging die according to Embodiment 1. Embodiment 1 Embodiments of the present invention will be described below with reference to the drawings. Figure 1 is a cross-sectional view showing an example of a forging die according to Embodiment 1. In Figure 1, the forging die 10 comprises an upper die 11, a lower die 12, and a nozzle 13. The upper die 11 also has an inner upper die 14, an outer upper die 15, and an intermediate upper die 16. The upper mold 11 and the lower mold 12 are molds that form a sealed molding space. Furthermore, an intermediate upper mold 16 is provided between the inner upper mold 14 and the outer upper mold 15. The mating surfaces 18 of the inner upper mold 14 and the intermediate upper mold 16, and the mating surfaces 19 of the outer upper mold 15 and the intermediate upper mold 16, allow for the entry of a mold release agent. The nozzle 13 sprays the release agent onto the upper mold 11 while the inner upper mold 14 and the outer upper mold 15 are separated and open. Since the main role of this release agent is to cool the mold, a large amount is applied to the impression area 17 of the upper mold 11. The release agent does not dry before the workpiece is formed, and the workpiece is formed with the impression area 17 of the upper mold 11 still wet with the release agent. Thus, according to the forging die of Embodiment 1, by providing a groove on the uppermost surface of the workpiece, the release agent can be released, and the occurrence of material loss can be suppressed. Furthermore, the present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from the spirit of the invention. For example, the forging die may have a divided die in addition to the upper and lower dies.