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Harmonic reducer flexible gear with DLC coating

A technology of harmonic reducer and flexible wheel, which is applied in the direction of coating, superimposed layer plating, and components with teeth, etc. It can solve the problems of lower product accuracy, vibration and noise, and reduce temperature rise and noise. , Reduce friction coefficient, high hardness effect

Inactive Publication Date: 2020-08-07
东莞市国森科精密工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] figure 2 In the middle picture, the gear meshing part with darker tooth surface color has obvious glued scratches on the tooth surface, which will reduce the precision of the product and increase the vibration and noise;

Method used

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  • Harmonic reducer flexible gear with DLC coating
  • Harmonic reducer flexible gear with DLC coating
  • Harmonic reducer flexible gear with DLC coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] In order to obtain a harmonic reducer flexible spline with a DLC coating, its characteristic is that the surface of the base material is distributed with a transition layer and a working layer in sequence from the inside to the outside, and the inner thickness of the transition layer is 0.4-0.6 μm. The material of the transition layer is chromium or titanium, and the thickness of the working layer is 0.8-3 μm, SP 2 Bond content is 70%-95%, SP 3 A DLC coating with a bond content of 5%-30%; the flexspline has a surface hardness of 1200 to 2500HV and a surface friction coefficient of 0.1, and the flexspline can be treated by arc ion plating as follows, the specific steps are as follows:

[0016] Step 1. Cleaning of workpiece

[0017] Before the workpiece enters the vacuum chamber for electroplating, it should be cleaned to remove some surface impurities to obtain a good electroplating effect. The specific cleaning steps can include:

[0018] (1a). Ultrasonic cleaning

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Abstract

The invention relates to a harmonic reducer flexible gear with a DLC coating. A transitional layer and a working layer are distributed on the surface of a base body material of the harmonic reducer flexible gear with the DLC coating in sequence from inside to outside; the internal thickness of the transitional layer is 0.4-0.6 microns; the material of the transitional layer is chromium or titanium; the working layer is the DLC coating with thickness of 0.8-3 microns, SP2 bond content of 70-95% and SP3 bond content of 5-30%; and the surface hardness of the flexible gear is 1200-2500 HV, and thesurface friction coefficient of the flexible gear is 0.1.

Description

technical field [0001] The invention relates to a harmonic reducer flex spline with DLC coating. Background technique [0002] As a small-module high-precision transmission part, the harmonic reducer is mainly composed of four basic components: a wave generator (composed of a cam and a flexible bearing), a flexible gear, and a rigid gear. Flexible gears produce controllable elastic deformation and mesh with rigid gears to transmit motion and power. The performance indicators investigated mainly include: bending fatigue life, contact fatigue life, precision retention, noise, vibration, transmission error, etc. Among them, the bending fatigue life of domestic and foreign harmonic reducers is generally 8000 hours, the accuracy maintenance ability is generally 2000 hours, and the contact fatigue pitting failure is not defined. The flexible gear is always deformed during the movement, so the heat treatment of the gear adopts quenching and tempering at medium and high temperature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/06F16H55/17C23C14/02C23C14/16C23C16/26C23C16/455C23C28/00
CPCF16H55/06F16H55/17C23C14/16C23C14/021C23C14/022C23C16/26C23C16/455C23C28/322C23C28/343
Inventor 刘鸣源黄小明
Owner 东莞市国森科精密工业有限公司
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