国产在线一区二区观看_免费看的日韩性爱视频_在线观看国产爆草网站视频下载_麻豆精品国产一区_亚洲高清视频网站_影音先锋国产精品专区_日韩精品R级国语_亚洲无码电影在线播放完整版_美女视频在线观看永久免费_亚洲一级毛片大全

Development of metallurgical machinery gear theory and manufacturing processes will be further study the mechanism of tooth damage, which is to establish a reliable method of strength calculation basis is to improve the carrying capacity of gears, gear extended theoretical basis of life; the development of a circular arc tooth profile the new tooth representatives; study new materials and manufacturing gear gear new technology; the elastic deformation of gear research, manufacture and installation errors, and the distribution of temperature field, performed tooth modification to improve the smoothness of running gear and at full load increases the contact area between the teeth, thereby enhancing the carrying capacity of gears.

Friction, lubrication technology lubrication theory and metallurgical machinery gears basic research work on the elastic hydrodynamic lubrication theory, promote the use of synthetic lubricants and extreme pressure additives added as appropriate in oil, not only can increase the carrying capacity of the tooth surface but also can improve the transmission efficiency.