文档介绍：?????????ъ???? CAD??? QQ 194535455 ?????????????????ж?????????????θ??θ????傧?????θ??┗?????????????????????θж?????????????????????????????????θ?????θ????????θ????????ど????????????????θ???????????????????????θ????????ж??????????????〃??ф?????????????????θ???????????θ???????θ???????θ?????喵?θ????????????р??????θ????????????????θф????????????θ??????儎???????????φ???; 喵?; ???; ??; ???????????ъ???? CAD??? QQ 194535455 Abstract Automotive transmission is one of the most ponent. Its task is to adjust the transformation engine performance, the power effectively and economically to drive wheels, thus to meet the use requirement. Transmission is an important part of a drive train task, one is to determine the ponents of the vehicle performance. The design of the transmission level directly affects the vehicle power performance, fuel economy, reliability and portability, transmission shift control stability and efficiency, etc. With the development of auto industry, auto transmission design trend is to increase the transmission power and the ratio of the weight, and require transmission can have a smaller size and good performance. This design with the basis of the existing enterprise is producing car santana transmission, in a given engine output torque, speed and maximum speed, maximum gradability and other conditions, focuses on the structure of the structural parameters of the transmission gear, shaft size and so on to carry on the design calculation, At the same time design the transmission scheme and structure of transmission form,And the operating mechanism and the synchronizer structure design, To better improve the overall performance of the car. Key words: Transmission; Gear; Synchronizer; Design; Structure ?????????ъ???? CAD??? QQ 194535455 ????......................................................... 1 ?жㄖ???.................................................. 2 ??..................................................... 2 ??????????................................