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Multi-layer metal/resin gear, as well as manufacturing process and application thereof

A multi-layer, resin technology, applied in the direction of belts/chains/gears, components with teeth, portable lifting devices, etc., can solve problems such as poor fit between the axle and the hub, complicated manufacturing process, and insufficient strength of the gears, etc. , to achieve the effect of saving material cost, low elastic rate and improving bonding force

Pending Publication Date: 2019-07-19
浙江美亚特精密机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In view of the problems existing in the prior art, one of the purposes of the present invention is to provide a multi-layered metal / resin gear with good transmission relationship, high strength, high precision, high output torque, stable operation and low noise to overcome The axle part and the hub part are not closely matched, the assembly precision is low, the manufacturing process is complicated, the difficulty is high, the cost is high, the tooth precision is low, the gear strength is insufficient, etc.

Method used

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  • Multi-layer metal/resin gear, as well as manufacturing process and application thereof
  • Multi-layer metal/resin gear, as well as manufacturing process and application thereof
  • Multi-layer metal/resin gear, as well as manufacturing process and application thereof

Examples

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Embodiment

[0053] Carbon steel is used to manufacture an integrally formed metal core with an axle portion and a hub portion by casting, and the outer diameter of the axle portion is 30mm. The hub portion has an outer diameter of 70 mm and a thickness of 4 mm. There are 16 through holes evenly distributed along the circumference, with a diameter of 5 mm, arranged on the outer side of the hub portion. The finished metal core is placed in an injection mold. A fiber reinforced polyamide resin is injected to form a support ring surrounding the outer periphery of the hub portion, the resin filling the through holes. A plurality of grooves are arranged on the end surface and the tooth surface of the protruding teeth of the support ring. Then, wrap PA66 resin on the outer peripheral surface of the support ring to form the outer gear layer. The support ring and the outer tooth layer constitute the ring gear part, which has an outer diameter of 90 mm, a thickness of 18 mm, and 44 teeth. The m...

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Abstract

The invention discloses a multi-layer metal / resin gear which comprises a metal core part with a wheel axle part and a hub part, and a resin gear ring part surrounding the periphery of the hub part. The multi-layer metal / resin gear is characterized in that the wheel axle part and the hub part of the metal core part are integrally molded through a forging or casting manner; the resin gear ring partcomprises a support ring with bulging teeth and an outer tooth layer; the support ring is molded on the periphery of the metal core part through a first resin; and the outer tooth layer is formed by asecond resin so as to be coated on the periphery of the support ring. According to a manufacturing process provided by the invention, the processing efficiency is improved, and the manufacturing costis greatly reduced. The multi-layer metal / resin gear provided by the invention has the advantages of good transmission fit relation, high strength, high precision, high output torque, operation stability, low noise and the like.

Description

technical field [0001] The present invention relates to the technical field of gears, in particular to the technical field of metal / resin composite gears, and more specifically to a multi-layered metal / resin gear and its manufacturing process and application. Background technique [0002] Gear transmission is a main form of transmission of mechanical power and motion. Gear transmission has high efficiency, stable transmission ratio, and compact structure, so it is widely used. Internationally, power transmission gears are developing in the direction of light weight, high speed and standardization. [0003] Metal gears have problems of vibration and noise due to meshing due to transmission errors and tooth collision due to backlash. Compared with metal gears, resin gears not only have low production cost, good molding process, and high production efficiency, but also have the advantages of light weight, stable transmission, vibration absorption and noise reduction, and good ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/17F16H55/14B29C45/14
CPCF16H55/17F16H55/14B29C45/14
Inventor 周友华
Owner 浙江美亚特精密机械有限公司
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