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Sintering tool for planetary gear

A planetary gear and tooling technology, applied in the field of powder metallurgy, can solve the problems of reducing product quality, increasing the internal stress of planetary gears, and not controlling the number of multi-layer superimposed planetary gears, so as to achieve the effect of improving the qualification rate

Inactive Publication Date: 2018-03-02
南通冠达粉末冶金有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a planetary gear sintering tool, which can solve the problem that the general planetary gear adopts multi-layer superimposed planetary gears without controlling the number; the internal stress of the planetary gear at the bottom during the sintering process is greatly increased, reducing problem of product quality

Method used

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  • Sintering tool for planetary gear

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Embodiment Construction

[0018] The following examples can enable those skilled in the art to understand the present invention more comprehensively, but the present invention is not limited to the scope of the described examples.

[0019] Such as figure 1 The one shown results in a greatly increased internal stress on the planetary gear at the bottom during the sintering process, reducing the quality of the product.

[0020] In order to solve the above technical problems, the technical solution of the present invention is: a planetary gear sintering tool, on which the planetary gear is nested; including a bottom plate 1 and a gear assembly platform 2, and the gear assembly platform 2 is vertically arranged on the bottom plate 1 ; Planetary gear 3 sintered tooling can be stacked on each other.

[0021] The gear assembly platform 2 includes a mounting platform 21 and a sleeve rod 22; the sleeve rod 22 is vertically installed on the mounting platform 21, and the mounting platform 21 and the sleeve rod 2...

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Abstract

The invention relates to a sintering tool for a planetary gear. A planetary gear is embedded on the tool. The sintering tool is characterized by comprising a base plate and a gear assembly table, wherein the gear assembly table is vertically arranged on the base plate; and the planetary gear sintering tools can be stacked with each other. Through designing the size of the height of a sleeve rod ofthe sintering tool associated with the thickness of the planetary gear, internal stress produced by the stacked planetary gears under the effect of pressure during a sintering process of the planetary gears can be ensured within an adjustable range; the qualified rate of the planetary gears after being sintered can be improved; the diameter of the sleeve rod is the same as the diameter of the planetary gear, the top end of the sleeve rod is chamfered, so the planetary gear can be embedded on the sleeve rod and clearance fit can be achieved.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a planetary gear sintering tool. Background technique [0002] Macroscopic definition: At high temperature (not higher than the melting point), the solid particles of ceramic green bodies are bonded to each other, the grains grow, the voids (pores) and grain boundaries gradually decrease, and the total volume shrinks through the transfer of substances, and the density Increase, and finally become a dense polycrystalline sintered body with a certain microstructure, this phenomenon is called sintering; [0003] Microscopic definition: there is mutual attraction between molecules (or atoms) in the solid state, and the particles gain enough energy to migrate through heating, so that the powder particles are bonded, the strength is generated, and the process of densification and recrystallization is called sintering; [0004] Regardless of the macroscopic definition or the microscopi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/08B22F3/10
CPCB22F5/08B22F3/10B22F2003/1042
Inventor 纪桂林
Owner 南通冠达粉末冶金有限公司
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