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Planet carrier and preparation method thereof

A technology of planet carrier and powder metallurgy, which is applied in the direction of mechanical equipment, transmission parts, belts/chains/gears, etc., can solve the problems of long production cycle, troubles in actual production, high production cost, etc., and achieve low production cost and suitable for automation The effect of high production and production efficiency

Active Publication Date: 2012-10-03
扬州意得机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two production methods have a long production cycle and high production costs, which bring great troubles to actual production.

Method used

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  • Planet carrier and preparation method thereof
  • Planet carrier and preparation method thereof
  • Planet carrier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The production method of the planetary carrier is to perform operations such as forming, sintering, carburizing, and finalizing the powder metallurgy planetary carrier, and then through assembly, put the spring, steel ball, and cam into the planetary carrier cavity, and finally connect the gasket to the end face of the planetary carrier It is integrated into a whole by resistance welding, specifically:

[0015] (1) Dosing powder metallurgy planetary carrier according to the following parts by weight of powder metallurgy raw materials: Fe: 92.0 parts, C: 0.8 parts, Ni: 4.5 parts, Mo: 1.2 parts, Cu: 1.5 parts;

[0016] (2) Forming (100-ton forming machine), sintering (1120°C×0.5H), carburizing (830°C×2H, Cp:0.8) and finalization (ordinary 1-ton press) and other operations are carried out in sequence; out of the powder metallurgy planetary frame.

[0017] (3) Place the spring, steel ball, and cam into the cavity of the planetary carrier in sequence.

[0018] (4) The gask...

Embodiment 2

[0022] The method is the same as in Example 1, wherein the powder metallurgy planetary carrier ingredients are: Fe: 95.4 parts, C: 0.6 parts, Ni: 2.5 parts, Cu: 1.5 parts.

[0023] To test the product, the main testing parameters are shown in the table below:

[0024] Product Features Required specification value Product actual value product density 7.0g / cm 3 MIN 7.15g / cm 3 Shaft breakout force 150kgf MIN 165~190kgf Product torque 1000kgf MIN 1250~1500kgf Gasket and planet carrier breakout force 60kgf MIN 80~120kgf MIN

Embodiment 3

[0026] The method is the same as in Example 1, wherein the powder metallurgy planetary carrier ingredients are: Fe: 95.4 parts, C: 0.6 parts, Ni: 2.5 parts, Cu: 1.5 parts.

[0027] To test the product, the main testing parameters are shown in the table below:

[0028] Product Features Required specification value Product actual value product density 7.0g / cm 3 MIN 7.15g / cm 3 Shaft breakout force 150kgf MIN 165~190kgf Product torque 1000kgf MIN 1250~1500kgf Gasket and planet carrier breakout force 60kgf MIN 80~120kgf MIN

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Abstract

The invention discloses a planet carrier and a preparation method thereof. The planet carrier comprises a powder metallurgy planet carrier, springs, steel balls, a cam and a spacer, wherein the cam is arranged in a powder metallurgy planet carrier cavity; the springs and the steel balls which are matched with each other for use are arranged between the cam and the powder metallurgy planet carrier; the spacer is fixedly arranged on the powder metallurgy planet carrier from the outer side; the springs, the steel balls and the cam are sealed in the powder metallurgy planet carrier, so that the cam and the steel balls relatively and bilaterally slide to realize a self-locking function; and the powder metallurgy planet carrier comprises the following powder metallurgy raw materials in parts by weight: 90.0-98.0 parts of Fe, 0-1.0 part of C, 1.0-5.0 parts of Ni, 0-1.0 part of Mo and 1.0-3.0 parts of Cu. The planet carrier and the preparation method thereof have the advantages of easiness in production operation, suitability for automatic production, high production efficiency, capability of producing 3000PCS products every 8H, low production cost, stable product performance, excellent economic prospect and capability of producing excellent social benefit.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a planet carrier and a preparation method thereof. Background technique [0002] The manufacturing method of powder metallurgy planetary carrier is generally completed by forming, sintering, heat treatment, machining or stepped shaft connection. However, for some planetary carriers with self-locking function and impact protection, the normal process is very difficult to manufacture. In many In some cases, it is necessary to cut out a certain space from the planetary carrier body by machining, and then put steel balls, springs, cams, etc. into it, or connect the planetary carrier body and a gasket by pressing a stepped shaft. The above two production methods have long production cycles and high production costs, which bring great troubles to actual production. Contents of the invention [0003] Purpose of the invention: Aiming at the deficiencies in the existing produ...

Claims

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Application Information

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IPC IPC(8): F16H57/08B23P15/14
Inventor 崔永涛官劲松徐同
Owner 扬州意得机械有限公司
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