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Abrasion-resistant gear with self-adaptive function and manufacturing method thereof

A manufacturing method and self-adaptive technology, applied in the field of mechanical parts manufacturing, can solve the problems of increased tooth surface wear, plastic deformation of the tooth surface, gear failure, etc., and achieve the effects of reducing the gear wear rate, increasing the contact area, and prolonging the service life.

Active Publication Date: 2018-08-17
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to change the design idea of ​​traditional high-performance gears, and use the principle of bionics to provide a wear-resistant gear with self-adaptive function and its manufacturing method, so as to improve the unavoidable transmission process of gears designed and manufactured by traditional methods. Due to overload and high gear temperature, gear failure problems such as aggravated tooth surface wear, tooth surface gluing, tooth surface plastic deformation, and even tooth breakage occur. When the oil supply system fails and the gear temperature rises instantaneously, it can Maintain good transmission capacity for a long time

Method used

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  • Abrasion-resistant gear with self-adaptive function and manufacturing method thereof
  • Abrasion-resistant gear with self-adaptive function and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] (1) Ti, Ni, and Si elemental powders are selected according to a molar ratio of 52.5:39.5:8. The particle size of the powder is about 30 μm, the purity is 99.7%, and the spheroidization rate is 99%. Mix the elemental powders of the three elements evenly, and the bulk density of the mixed powder is 3.3g / cm 3 .

[0039] (2) Use the 3D CAD modeling software Solidworks to establish a 3D model of the gear, and then slice the model to generate a 2D sliced ​​model, which is imported into the computer control system of the 3D printing molding device.

[0040] (3) Set the 3D printing process parameters based on the selected laser melting (SLM) technology: the thickness of the powder layer is 30 μm, the laser power is 300 W, the spot diameter is 80 μm, the scanning speed is 1600 mm / s, and the scanning distance is 60 μm.

[0041] (4) Introduce argon gas protection into the molding cavity, and control the automatic powder spreading device to evenly spread powder on the substrate i...

Embodiment 2

[0045] (1) Ti, Ni, and B elemental powders are selected according to a molar ratio of 46:38:16. The particle size of the powder is about 60 μm, the purity is 99.8%, and the spheroidization rate is 99%. Mix the elemental powders of the three elements evenly, and the bulk density of the mixed powder is 2.4g / cm 3 .

[0046] (2) Use the 3D CAD modeling software Solidworks to establish a 3D model of the gear, and then slice the model to generate a 2D sliced ​​model, which is imported into the computer control system of the 3D printing molding device.

[0047] (3) Set the 3D printing process parameters based on the selected laser melting (SLM) technology: the thickness of the powder layer is 40 μm, the laser power is 150 W, the spot diameter is 80 μm, the scanning speed is 700 mm / s, and the scanning distance is 50 μm.

[0048] (4) Introduce argon gas protection into the molding cavity, and control the automatic powder spreading device to evenly spread powder on the substrate in the...

Embodiment 3

[0052] (1) Select TiNi / TiC composite material powder with a ratio of Ti, Ni, and C of 50:30:20. The particle size of the powder is about 50 μm, the purity is 99.8%, and the spheroidization rate is 99%. Mix the elemental powders of the three elements evenly, and the bulk density of the mixed powder is 2.6g / cm 3 .

[0053] (2) Use the 3D CAD modeling software Solidworks to establish a 3D model of the gear, and then slice the model to generate a 2D sliced ​​model, which is imported into the computer control system of the 3D printing molding device.

[0054] (3) Set the 3D printing process parameters based on the selected laser melting (SLM) technology: the thickness of the powder layer is 60 μm, the laser power is 100 W, the spot diameter is 80 μm, the scanning speed is 200 mm / s, and the scanning distance is 80 μm.

[0055] (4) Introduce argon gas protection into the molding cavity, and control the automatic powder spreading device to evenly spread powder on the substrate in the...

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Abstract

The invention discloses an abrasion-resistant gear with a self-adaptive function and a manufacturing method thereof. The abrasion-resistant gear has a pressure and temperature self-adaptive function and particularly can maintain good drive capacity for a long time when the gear temperature rises instantaneously. In order to solve the problem that TiNi alloy / ceramic bionic structure material gearsare difficult to manufacture by a traditional gear mechanical machining mode, the gear is prepared through a selective laser melting (SLM) according to the following steps: selecting mixed elemental powder, TiNi alloy powder or TiNi alloy / ceramic composite powder, importing a two-dimension slicing model of the gear into a control system of a 3D printing forming device, setting SLM-based 3D printing technical parameters, carrying out 3D printing forming of the gear under vacuum / inert gas shielding, and carrying out thermal treatment on the formed gear under vacuum / inert gas shielding. The service life of the gear is greatly prolonged under high loads, and the gear is a novel high-performance gear with broad application prospects.

Description

technical field [0001] The invention belongs to the field of mechanical part manufacturing, and in particular relates to a wear-resistant gear with self-adaptive function and a manufacturing method thereof. Background technique [0002] As an important transmission part in the mechanical structure, the gear has the advantages of high transmission efficiency, high working stability, accurate transmission ratio, long service life, strong safety and reliability, etc. In the process of gear transmission, due to overload and increased gear friction temperature, gear failure phenomena such as increased tooth surface wear, tooth surface gluing, tooth surface plastic deformation, and even tooth breakage are prone to occur. Especially in the case of an emergency, the oil supply system fails, the gears run under the condition of lack of oil or dry friction, and the temperature of the gears rises instantaneously, causing the gears to glue together and get stuck or broken instantly. Fa...

Claims

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Application Information

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IPC IPC(8): F16H55/06F16H55/14B22F3/105B22F3/24B33Y10/00
CPCF16H55/06F16H55/14B22F3/24B33Y10/00B22F2003/248B22F2003/241B22F10/00B22F10/66B22F10/34B22F10/28B22F10/36B22F10/64B22F10/366B22F10/32Y02P10/25
Inventor 张志辉王胡军梁云虹林鹏宇刘镇宁于征磊李秀娟马志超赵杰刘强郑龙任露泉
Owner JILIN UNIV
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