Development Of Dynamic Load Wear Testing Machine And Material Wear Experiment Investigation

Tribology is the study of friction, wear and lubrication of contacted surfaces in relative motion.tribology-test is a main method for studying tribology, and the tribology-test machine is taken as an important tool. With the development of mechanical engineering and its correlative fields,the research about tribology has been changing from macrocosm field to microcosm field, tribology experiment also develop to microcosm and dynamic test, consequently, it has more strict requirement to the accuracy and real-time performance of experiment data. In order to improve the tribology study of the material, virtual instrument, sensor technology and electromechanical integration have been used in developing the friction and wear machine and its testing system which is controlled with computer. Due to used AC servo motor ,so the structure of the machine is compact, it is easy to control and the noise is low. The testing system is built under Windows, and the signal parameter is picked up through the sensor,magnified by the magnifier, and then collected and disposed through PCI-6221 which is based on PCI bus,and use LabVIEW developed a friendly human-machine panel. It can realize the real-time collections, on-line analyses, off-line disposed and save of experiment parameter.so we can make real-time and quantified evaluation for the friction behavior of the experiment materials.Effects of the characteristic of static and sine wave load on wear in dry friction contion was investigated with the aid of the Timken wear-testing machine.the result shows the more wear amount of the specimen with the addition of the frequency and amplitude of the sine wave load,but effects of change frequency more than change amplitude.The manufacture experiment machine in this paper not only include the function of traditional Timken machine,but also can simulate the real work condition and show the timeliness of the friction coefficient in experiment, therefore, the research concerned friction and wear machine in this paper has important meaning for the study about principles of friction and wear.