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Supersonic motor thermosetting resin base friction material and friction layer manufacturing method and auxiliary tool

A technology of friction materials and ultrasonic motors, applied in the field of ultrasonic motors, can solve problems such as low surface tension and difficult stator friction layers, and achieve the effects of suitable hardness, excellent output characteristics, and superior wear resistance

Inactive Publication Date: 2006-10-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low surface tension of thermoplastics and the cogging of the stator, it is very difficult to make the stator friction layer

Method used

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  • Supersonic motor thermosetting resin base friction material and friction layer manufacturing method and auxiliary tool
  • Supersonic motor thermosetting resin base friction material and friction layer manufacturing method and auxiliary tool
  • Supersonic motor thermosetting resin base friction material and friction layer manufacturing method and auxiliary tool

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Experimental program
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Effect test

specific Embodiment approach 1

[0031] Embodiment 1: A thermosetting resin-based friction material for an ultrasonic motor, its composition and mass percentage: 47% epoxy resin, 33% curing agent, 15% nano wear-resistant powder, 10% carbon fiber and 5% copper powder.

[0032] The method for making the friction layer of the ultrasonic motor by using the above-mentioned materials comprises the following steps:

[0033] 1. At room temperature, mix the epoxy resin-based ultrasonic motor friction material according to the above ingredients and mass ratio, and stir evenly;

[0034] 2. Directly stick and coat the prepared material on the specially designed rotor or stator test piece which has not yet been formed;

[0035] 3. Put the rotor or stator coated with friction material at a temperature of 30°C to 45°C, vibrate, level and remove the gas in the material through an ultrasonic vibrator;

[0036] 4. Put the test piece in the oven and bake it at 50-90°C for 30-180 minutes;

[0037] 5. Machining the grilled test...

specific Embodiment approach 2

[0041] Embodiment 2: A thermosetting resin-based ultrasonic motor friction material, its composition and mass percentage: 38.2% epoxy resin and 26.8% curing agent, 12.5% ​​nano wear-resistant powder, 12.5% ​​carbon fiber and 10% copper powder. In this embodiment, copper powder is added to improve the heat dissipation of the friction layer. The fabrication method of the friction layer of the ultrasonic motor is similar to that in Embodiment 1.

specific Embodiment approach 3

[0042] Specific embodiment 3: A thermosetting resin-based ultrasonic motor friction material, its composition and mass percentage: 38.2% epoxy resin and 26.8% curing agent, 5% nano wear-resistant powder, 15% carbon fiber, 5% copper oxide and poly Tetrafluoroethylene 5%, copper powder 5%. In this embodiment, polytetrafluoroethylene is added in Embodiment 1 to reduce the hardness of the material and reduce the wear on the counter surface. The fabrication method of the friction layer of the ultrasonic motor is similar to that in Embodiment 1.

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Abstract

The invention relates to an ultrasound dynamo thermosetting resin radical friction material and friction layer making method and the assistant tools. The material is made up of 35-80% thermosetting resin, 0-34% curing agent, 5-15% nanometer antifriction powder, 5-15% carbon fiber, 0-10% copper oxide, 0-5% polytetrafluoroethylene, 5-10% copper powder, 2-10% graphite, 0-5% nitrile butadiene rubber, and 0-10% mineral substance. The invention has excellent wear resistance, suitable rigidity, good output characteristic, etc. And the method is low cost and simple. The assistant tool is made up of moving bar and base.

Description

1. Technical field: [0001] The invention relates to a thermosetting resin-based friction material for an ultrasonic motor, a friction layer manufacturing method and an auxiliary tool, and belongs to the technical field of ultrasonic motors. 2. Background technology: [0002] Ultrasonic Motor (Utrasonic Motor, USM) is a new type of micro-motor developed at the end of the 20th century. It uses the inverse piezoelectric effect of the piezoelectric material to excite the ultrasonic vibration of the elastic body to realize the conversion of electrical energy to mechanical energy, and uses the friction between the vibrator and the mover to transmit the motion and force. Since the ultrasonic motor transmits energy through friction, the quality of the friction material largely determines the service life and performance of the ultrasonic motor. [0003] Domestic research on ultrasonic motors and their friction materials started relatively late, and there are not many research units...

Claims

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Application Information

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IPC IPC(8): C08J5/14
Inventor 姚志远丁庆军赵淳生
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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