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Gear with bionic non-smooth surface and machining method thereof

A non-smooth surface and surface processing technology, applied to components with teeth, metal processing equipment, gear lubrication/cooling, etc., can solve the problem of difficult control of material properties and structural dimensions, affect the consistency of gear surface quality, and prolong the manufacturing cycle to reduce the probability of sliding plow damage, avoid damage, and improve stress distribution

Pending Publication Date: 2021-05-25
HARBIN UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research on the bionic non-smooth surface treatment of gears is mostly based on laser processing, and the processing method is relatively simple, and the company needs to be equipped with special processing equipment and develop specific processing technology; secondly, the bionic non-smooth surface unit body after laser treatment It is difficult to control the material properties and structural dimensions of the gear surface, which affects the quality consistency of the gear surface; finally, similar to the surface strengthening treatment, the existing bionic non-smooth surface treatment technology of the gear surface increases the manufacturing cost and prolongs the manufacturing process virtually. There is a great contradiction between the cycle and the actual needs of the development of the gear industry

Method used

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  • Gear with bionic non-smooth surface and machining method thereof
  • Gear with bionic non-smooth surface and machining method thereof
  • Gear with bionic non-smooth surface and machining method thereof

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Embodiment Construction

[0018] High-speed milling with ball-end milling cutter, the inclination angle between the milling cutter and the gear working surface is in the range of 20°~30°, the cutting amount on the back of the milling cutter is between 0.1~0.25mm, and the relationship between the machining line spacing and the feed amount per tooth of the milling cutter It is 2:1, the feed rate of each tooth of the milling cutter is between 0.1~0.5mm / z, and the feed direction of the milling cutter is parallel to the direction of the gear pair transmission. By adjusting the milling parameters, the working surface of the gear can be processed. Regular quadrilateral pit-like surface morphology, and the quadrilateral pits are evenly distributed.

[0019] Using experiments and ANSYS software to load and analyze the stress of the new gear, the results show that when the working surface of the gear is evenly distributed with a quadrilateral pit with a depth of 0.05mm, a length of 0.706mm, and a width of 0.351mm...

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Abstract

The invention discloses a gear with a bionic non-smooth surface. Compared with a conventional gear pair, the gear has better wear resistance, and is characterized in that quadrilateral pits with the length-width ratio of 2: 1 are distributed on the surface of the gear pair, and the depth of the pits is 0.01-0.1 mm. Under the extreme working conditions of high speeds and heavy loads, multiple effects of complex mutual friction, high temperature and high stress exist on the gear surface, but the gear has a shape similar to a pit on the surface of a dung beetle head, so that the lubrication of the gear surface can be effectively improved, the friction of the gear surface can be reduced, and the friction reduction effect is further achieved. Compared with a conventional gear with the same base material, the service life of the gear is remarkably prolonged, and the mechanical property of the gear is remarkably improved.

Description

technical field [0001] The invention relates to the field of mechanical transmission, in particular to a gear with a bionic non-smooth surface. Background technique [0002] With the advancement of industrial technology, the high-end equipment manufacturing industry has put forward more stringent requirements for the gear transmission mechanism in terms of high speed and heavy load. The existing gear transmission technology has become one of the key bottlenecks restricting the localization of high-end electromechanical equipment. In the process of gear transmission, the friction environment of the tooth surface is extremely complex, especially in high-speed and heavy-load conditions, which will cause the temperature of the friction interface of the gear to rise, it is difficult to form a lubricating film, and the friction pairs are prone to pitting, falling off and gluing. Severe tooth surface friction and wear will reduce gear transmission efficiency, cause tooth surface te...

Claims

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Application Information

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IPC IPC(8): F16H55/06F16H55/14F16H55/17F16H57/04B23F9/08B23F23/06
CPCB23F9/08B23F23/06F16H55/06F16H55/14F16H55/17F16H57/0006F16H57/0412F16H57/045
Inventor 张为冯仁义孙永雷
Owner HARBIN UNIV OF SCI & TECH
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