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目前国外已广泛采用棱轴~*联接,因为它与平键或花键联接相比,具有很多优点:它没有应力集中;联接强度较高;在载荷作用下能自动定心,传动时的振动和噪声大为降低;棱圆形的直径处处相等,便于测量和检验,等等。但目前棱轴的加工尚存在一些问题,倘不用加工棱轴的专用机床(靠模车床或靠模磨床),只能达到9～10级精度;如果棱轴直接在靠模机床上进行精加工,则靠模的精度应比零件精度高2～3级,靠模的制造又
At present, foreign countries have been widely used prism ~ * connection, because it is compared with the flat key or spline connection, has many advantages: it has no stress concentration; higher joint strength; under the action of load can be automatically centering, transmission vibration And noise is greatly reduced; prismatic round diameter equal everywhere, easy to measure and test, and so on. However, there are still some problems in the machining of the prism axis. If only the special machine tool (the lathe by the mold or by the model grinding machine) is not machined, only the accuracy of 9 to 10 grades can be achieved; if the prism axis is directly finished by the machine tool , Then the accuracy of the model should be higher than the accuracy of parts 2 to 3, by the manufacture of mold