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Straight-tooth cylindrical gear radial extrusion die and method

A technology of spur gears and extrusion dies, which is applied to metal extrusion dies and other directions, can solve the problems of large forming load, difficult tooth cavity filling, and low die life, and achieves easy processing, ingenious structural design, and die service life. long effect

Inactive Publication Date: 2017-10-24
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, axial extrusion has technical problems such as difficulty in tooth cavity filling, large forming load, and low die life.

Method used

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  • Straight-tooth cylindrical gear radial extrusion die and method
  • Straight-tooth cylindrical gear radial extrusion die and method

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Embodiment Construction

[0016] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0017] Such as Figure 1~2 As shown, the spur gear radial extrusion die of the embodiment of the present invention includes an upper die, a lower die, and a radial extrusion die fixed between the upper die and the lower die. The upper die includes: an elastic body 20, a pad Plate 18, upper die fixing plate 19, inclined ring plate 12, elastic body 20 is connected with the pressure motor beam, radial extrusion die includes side punch 14, upper and lower groove plates 15, 13, positioning ring 10, inclined ring plate 12. Cylindrical wedge 16, side mold fixing plate 9, outer sleeve 11, spring 23, bolt 24, elastic body 20 of the upper die is flatly embedded in the upper end of cylindrical wedge 16 of the radial extrusion die, and the cylinder oblique The wedge 16 is connected with the pressure motorized beam, the number of side punches matches the number of gear t...

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PUM

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Abstract

The invention discloses a spur gear radial extrusion molding die and method, comprising an upper die, a lower die and a radial extrusion die fixed between the upper and lower dies, the elastic body of the upper die and the cylindrical wedge The pressure motor beam is connected, in which the elastic body is embedded in the upper end of the cylindrical wedge, and the lower mold is fixed on the press table. When extrusion is formed, the upper mold and the lower mold are firstly fixed to fix the gear blank, and then the press compresses it. At the same time, the cylindrical wedge continues to move downward under pressure, and transmits the force to the side punch, so that the side punch moves radially in the upper and lower chute plates and the side mold fixing plate, and completes the radial extrusion of the gear. Forming, the press is picked up, the cylindrical wedge moves upward, and the side punch moves in reverse under the restoring force of the spring bolt, the mold is fully opened, and the gear part is taken out. The invention reduces the load on the mold, improves the life of the mold, fills the tooth cavity more fully, and improves the production efficiency and qualified rate of the gear.

Description

technical field [0001] The invention relates to the extrusion forming technology of spur gears, in particular to a radial extrusion die and method for spur gears. Background technique [0002] Gear is a part that transmits motion and power. It is widely used in various mechanical fields such as automobiles and ships, and has a strong demand and scope. Therefore, the improvement of gear production technology will directly affect the economic benefits of gear manufacturing industry. In recent years, extrusion forming has become the dominant direction of forming gears due to its outstanding advantages, especially the process of axial extrusion forming gears. The metal streamlines of the axially extruded gear tooth are distributed along the continuous tooth profile, and the gear has high strength and long service life. These advantages not only avoid the shortcomings of traditional processing methods, but also have new progress on the existing basis. However, axial extrusion ...

Claims

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Application Information

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IPC IPC(8): B21C25/02B21C23/14
CPCB21C25/02B21C23/14
Inventor 任运来陈跃男
Owner YANSHAN UNIV
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