Wear-resisting gear with multi-material combined tooth face

A multi-material, tooth surface technology, applied in the direction of elements with teeth, belts/chains/gears, portable lifting devices, etc., can solve the problems of easy formation of brittle fracture, poor fatigue performance, high brittleness, and achieve good impact resistance. , good wear resistance, good wear resistance effect

Inactive Publication Date: 2016-06-22
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, simple ceramics have disadvantages such as poor toughness, poor fatigue performance, high brittleness, difficulty in deformation and cutting, making them unable to withstand collisions and impacts. Parts that bear complex loads, especially impact loads, in order to improve the toughness of ceramic materials, the strength and toughness of ceramics are improved by means of phase transformation toughening and microcrack toughening, but the toughness of ceramics after toughening treatment is only that of steel materials. 1 / 10 of that, there are still big deficiencies, which limit the application of ceramics in important mechanical transmission parts that are subjected to complex loads such as friction and impact

Method used

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  • Wear-resisting gear with multi-material combined tooth face
  • Wear-resisting gear with multi-material combined tooth face
  • Wear-resisting gear with multi-material combined tooth face

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] see figure 1 , the gear base 1 is mainly made of a metal material with good impact resistance, and at the same time, a circular unit body 2 made of a ceramic material is inlaid on the tooth surface of the metal material; the gear used in this experiment test, The metal material is 38CrMoAlA, quenched and tempered, the hardness is 230HB, and the precision is 7; the material of the circular unit body 2 is silicon nitride ceramics.

[0015] The impact force during the gear meshing process is borne by the metal material 38CrMoAlA and silicon nitride ceramics on the tooth surface at the same time, which can ensure that the silicon nitride ceramics will not undergo brittle fracture during the gear transmission process and continue to exert its good wear resistance; while in the gear During the wear process, the loss is also borne by the metal material 38CrMoAlA and silicon nitride ceramics on the tooth surface, so it can take advantage of the good wear resistance of ceramic m...

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Abstract

The invention relates to a wear-resistant gear with multi-material combined tooth surfaces, the tooth surfaces of which are inlaid with circular ceramic unit bodies, the number of which is about 15 to 20, and are evenly arranged; the circular unit bodies are projected on the tooth surfaces The area accounts for 30% to 40% of the total area of ​​the tooth surface, and the thickness is roughly 1 / 10 of the tooth thickness. The invention comprehensively utilizes the performance characteristics of various materials, and inlays the ceramic material on the gear base of the metal material. Compared with the prior art, the wear-resistant gear can effectively improve the wear-resistant performance of the gear and greatly prolong the life of the gear.

Description

technical field [0001] The invention relates to the field of mechanical transmission, in particular to a wear-resistant gear with multi-material composite tooth surfaces. Background technique [0002] Gear transmission is the most important form of mechanical transmission and has an irreplaceable important position. With the continuous improvement of the industrial level, the requirements for gear transmission are becoming more and more stringent. In order to meet the requirements of high-performance gear carrying capacity, it is necessary to The load-bearing capacity and reliability of the gear are improved by reducing the stress per unit area of ​​the gear and increasing the strength (hardness) per unit area of ​​the gear tooth. Among them, the means of reducing the stress per unit area of ​​the gear by increasing the modulus of the gear and increasing the thickness of the gear is increased. The volume and weight of the gear are reduced; the traditional surface heat treatm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/06F16H55/17
CPCF16H55/06F16H55/17
Inventor 陈奇徐帆樊浩张振高峰
Owner HEFEI UNIV OF TECH
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