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Solid lubrication method for cup-shaped harmonic gear reducer

A gear reducer, solid lubrication technology, applied in the direction of gear lubrication/cooling, elements with teeth, belts/chains/gears, etc., can solve the problems of low hardness, limited wear resistance, sensitive tribological properties, etc.

Active Publication Date: 2020-07-14
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the current solid lubrication technology of harmonic gear reducers in the aerospace field, the solid lubricating materials used, such as soft metals and dichalcogen layered structure compounds, have good lubricating properties under vacuum conditions, but have low hardness and resistance Limited abrasiveness, and its tribological properties are sensitive to the atmospheric environment

Method used

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  • Solid lubrication method for cup-shaped harmonic gear reducer
  • Solid lubrication method for cup-shaped harmonic gear reducer
  • Solid lubrication method for cup-shaped harmonic gear reducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) After splitting the XBS-80-100 cup-type harmonic gear reducer into rigid wheels, flexible wheels, flexible bearing inner rings, flexible bearing outer rings, flexible bearing steel balls, cams and baffles, the Ultrasonic cleaning was carried out in gasoline and acetone (analytical pure), and air-dried to obtain the components to be treated with solid lubrication.

[0052] (2) Equipped with clean gloves, load the flexible spline, large block and small block to be treated with solid lubrication on the workpiece rack of the coating vacuum chamber at the same time, close the door of the vacuum chamber, turn on the mechanical pump and molecular pump in turn to pump the vacuum chamber to Vacuum degree is 5.0×10 -3 Pa; turn on the argon valve and gas filling valve in turn, fill the vacuum chamber with argon until the partial pressure of argon in the vacuum chamber is maintained at 2.5Pa; turn on the DC bias power supply, adjust the DC bias value until the argon plasma is g...

Embodiment 2

[0065] The difference between this embodiment and embodiment 1 is only that the conditions of film deposition are different:

[0066] The power supply of Cr target sputtering and WC target sputtering is 4kW, the DC bias voltage is -50V, the deposition time is 10min, and the rotation speed of the workpiece holder is 1r / min;

[0067] The WC target sputtering power of plasma-assisted chemical vapor deposition combined with closed-field unbalanced magnetron sputtering is 2kW, the DC bias voltage is -500V, the deposition time is 60min, and the rotation speed of the workpiece holder is 1r / min.

[0068] MoS 2 Target sputtering and WS 2 The power of the target sputtering is 4kW, the DC bias voltage is -50V, the deposition time is 60min, and the rotating speed of the workpiece holder is 1r / min.

[0069] The thickness of the deposited film was measured by light interference microscopy, where MoS 2 / WS 2 The thickness of the nanometer multilayer self-lubricating film is 1.2 μm, and t...

Embodiment 3

[0073] The difference between this embodiment and embodiment 1 is only that the conditions of film deposition are different:

[0074] The power of Cr target sputtering and WC target sputtering is both 8kW, the DC bias voltage is -200V, the deposition time is 20min, and the rotation speed of the workpiece holder is 10r / min; the combination of plasma-assisted chemical vapor deposition The power of WC target sputtering in closed field unbalanced magnetron sputtering is 4kW, the DC bias voltage is -700V, the deposition time is 90min, and the rotating speed of the workpiece holder is 10r / min.

[0075] MoS 2 Target sputtering and WS 2 The power of the target sputtering is 6kW, the DC bias voltage is -100V, the deposition time is 90min, and the rotating speed of the workpiece holder is 3r / min.

[0076] The thickness of the deposited film was measured by light interference microscopy, where MoS 2 / WS 2 The thickness of the nanometer multilayer self-lubricating film is 2.9 μm, and ...

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Abstract

The invention provides a solid lubrication method for a cup-shaped harmonic gear reducer, and relates to the technical field of lubrication of reducers. The solid lubrication method comprises the following steps: depositing transition layers on the surfaces of a flexible wheel of the cup-shaped harmonic gear reducer and a large stop sheet and a small stop sheet in a wave generator by utilizing a closed field unbalanced magnetron sputtering method; depositing C-WC composite film layers on the surfaces of the transition layers of by utilizing plasma-assisted chemical vapor deposition and closedfield unbalanced magnetron sputtering; and depositing MoS2 / WS2 nano multilayer self-lubricating film layers on the surfaces of a rigid wheel of the cup-shaped harmonic gear reducer and a flexible bearing inner ring and a flexible bearing outer ring in the wave generator by utilizing the closed field unbalanced magnetron sputtering method. According to the solid lubrication method, the cup-shaped harmonic gear reducer has low friction torque under the conditions of atmospheric environment, vacuum environment and high-low temperature environment, the transmission characteristics of the cup-shaped harmonic gear reducer are insensitive to the environment temperature, and adaptability is high.

Description

technical field [0001] The invention relates to the technical field of lubrication of reducers, in particular to a solid lubrication method for a cup-type harmonic gear reducer. Background technique [0002] Harmonic gear reducers have technical characteristics such as large transmission ratio, high transmission precision, small size, and light weight, so they are widely used in the field of aerospace technology. The use of suitable lubricating methods or lubricating materials is the key to long service life of harmonic gear reducers in the aerospace field. [0003] Judging from the current research reports at home and abroad, the harmonic gear reducer for aerospace mainly has two main methods: solid lubrication and solid-liquid composite lubrication. Among them, solid lubrication is mostly lubricated by soft metal or dichalcogen layered compound film. Solid-liquid composite lubrication mainly uses soft metal and low saturated vapor pressure lubricating grease for composite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/14C23C14/06C23C14/50C23C14/34C23C14/02C23C16/50C23C16/26C23C28/00F16H55/06F16H57/04F16C33/64F16C33/66
CPCC23C14/022C23C14/0623C23C14/0635C23C14/14C23C14/3407C23C14/35C23C14/505C23C16/26C23C16/50C23C28/322C23C28/341F16C33/62F16C33/64F16C33/6696F16C2202/50F16C2223/60F16C2361/61F16H55/06F16H57/041Y02T10/86
Inventor 高晓明翁立军孙嘉奕胡明伏彦龙杨军王德生姜栋王琴琴
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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