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在机械设计和制造过程中,准确测定摩擦系数是很重要的。因为摩擦系数f与互相接触的两构件的材料、材质、接触面的光洁度和湿度等因素有关,所以我厂在对造纸机上的天然花岗石压榨辊进行受力分析、光弹试验与径向压力测定时,首先把与花岗石压榨辊相接触的零件按不同的金属材料、牌号和光洁度制作试样;然后再与花岗石试样一起,用正弦规测定摩擦系数f。这为天然花岗石压榨辊的受力分析、各种试验及新的结构设计,提供了可靠的数据。当物体重力G的沿约束表面分力,使物体有滑动趋势时,静摩擦力达到最大值F_m。法线反作用力N与静摩擦力F的合力与法线成一夹角φ。试样在沿约束
In the mechanical design and manufacturing process, the accurate determination of the friction coefficient is very important. Because the friction coefficient f is related to the material, material, contact surface finish and humidity of the two components contacting with each other, the force analysis of the natural granite press roll on the paper machine is carried out by our factory. The photoelastic test and radial The pressure measurement, the first contact with granite press roll parts made of different metal materials, grades and finish the sample; and then with the granite sample together with the sine law to determine the friction coefficient f. This provides reliable data for stress analysis of natural granite press rolls, various tests and new structural design. When the object gravitational force G along the constrained surface component, so that the object sliding trend, the maximum static friction F_m. The resultant of the normal reaction force N and the static friction force F forms an included angle φ with the normal line. The sample is along the constraint