精选优质文档-倾情为你奉上翻译：朱晓峰 节选至美国机械工程师手册第28版，有错之处，请指正。SPLINES AND SERRATIONSA splined shaft is one having a series of parallel keys formed integrally with the shaft and mating with corresponding grooves cut in a hub or fitting; this arrangement is in contrast to a shaft having a series of keys or feathers fitted into slots cut into the shaft. The latter construction weakens the shaft to a considerable degree because of the slots cut into it and consequently, reduces its torque-transmitting
