Analysis Of Meshing Performance And Thermal Experiment Of Vacuum Environment Gear

With the development of space technology, the life of the mechanical parts of space technology to become one of the urgent problems. Gear mechanism as a typical transmission mechanism has wide application in spacecraft, the high contact stress, thermal vacuum environment engaging gear lubrication under study space, research gear lubrication failure condition, thereby working to improve the reliability of space gear mechanism It has important theoretical and practical significance of life.Gear frictional heat is essentially a contact stress and friction coefficient and the slip rate of the product, The gear meshing gears determine thermal efficiency, gear meshing efficiency depends on contact stress and contact stress the main factors also gear wear. The topic of the next lunar vacuum environment, high load involute spur gears mathematical modeling, analysis gear slide, heat model and failure type, defined gear friction heat evaporation temperature is reached grease lubrication failure criterion. Thermal coupling gear mechanism exposure to working in a vacuum environment, spatial analysis gear, and thermal vacuum test, comparative analysis of analytical results through simulation and experimental results, draw gear lubricants and lubricant film failure time failure conditions, define gear life, rotary gear lubrication performance evaluation mechanism for the lunar soil drilling support brace.