目的 对摩擦机构滑动摩擦力矩进行研究,识别影响摩擦机构力矩的关键因素,为摩擦机构加工、装配、存放和转运过程中的质量控制提供试验依据。方法 以摩擦机构力矩值为指标,通过摩擦力矩自动检测仪、万能拉伸试验机、粗糙度轮廓测量仪、三坐标测量机、维氏硬度机等设备测量和研究摩擦盘粗糙度、结构尺寸和材料性能等因素对摩擦机构力矩值的影响。分别增加摩擦面上铅笔粉末的湿度和温度,将摩擦面混入油烟、灰尘和水汽等单一或混合介质,验证环境因素对摩擦机构力矩的影响。结果 当上、下摩擦盘粗糙度分别稳定在0.3~1.18 μm和0.42~0.90 μm或摩擦面混入灰尘、水汽和油烟等单一介质时,摩擦机构的力矩值无明显变化。当摩擦面混入灰尘、水汽2种介质或混入油烟、灰尘和水汽3种介质时,摩擦机构的力矩值显著增加。结论 综合考虑上述因素对摩擦机构力矩的影响,摩擦面混入灰尘、水汽或混入灰尘、水汽和油烟的混合介质是影响摩擦机构力矩特性的关键因素。因此,为保证产品质量,在实际生产和储存过程中,应严格控制作业环境中的油烟、灰尘和水汽。
Abstract
The work aims to study the sliding friction torque of friction mechanisms, identify the key factors affecting the torque of friction mechanisms from the perspective of design and environments, and provide a test basis for the quality control of friction mechanisms during processing, assembly, storage and transfer. With torque of friction mechanisms as an indicator, the effects of friction disc roughness, structure size and material properties on friction mechanism torque were analyzed by means of automatic friction torque detector, universal tensile tester, roughness and profile measuring instrument, coordinate measuring machine and Vickers hardness tester. The pencil powder on the friction surface was treated with humidity and temperature, and the friction surface was considered to be mixed with a single foreign body or mixed foreign body, such as fume, dust and water vapor, to verify the effect of environmental factors on the torque of the friction mechanism. The roughness of the upper and lower friction discs was stabilized between 0.3-1.18 μm and 0.42-0.90 μm, which had few effects on the friction torque of the guide mechanism. Compared with the normal and special conditions, the effect on the friction torque was very small. When the friction surface was mixed with two media, namely dust and water vapor, or a mixture of oil smoke, dust and water vapor, the torque of the friction mechanism increased significantly. Considering the effects of the above factors on the torque of the friction mechanism, when the friction surface is mixed with dust and water vapor, fume, dust and water vapor mixed foreign matters, it is the key factor affecting the torque characteristics of the friction mechanism. Therefore, in order to ensure product quality, in the actual production and storage process, the fume, dust and water vapor in the operating environment should be strictly controlled.
关键词
摩擦机构 /
力矩 /
粗糙度 /
摩擦面介质 /
环境因素 /
自动检测
Key words
friction mechanism /
torque /
roughness /
foreign matter on friction surface /
environmental factor /
automatic detection
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