齿轮、皮带轮、联轴器等类零件与轴的联接,多采用键、销类联接。尽管这类联接方法并非十分理想,但在某些场合仍不得不使用。虽然,还有方轴、多弧轴等其他联接方式,但也各有其不足之处。椭圆柱与椭圆孔的配合联接则有其独特之处。最显著的特点是,这种配合联接具有良好的装配性和自动对中性,传动质量较高。其次,这种联接结构简单,占据空间小,材料利用率高,承载能力也大,椭圆的 Gears, pulleys, couplings and other types of parts and the shaft connection, the use of keys, pin type connection. Although this type of joining method is not very satisfactory, it has to be used on some occasions. Although, there are square shaft, multi-arc shaft and other connections, but also have their own deficiencies. Oval cylinder and elliptical hole with the coupling has its own unique place. The most notable feature is that this mating connection has a good fit and automatic neutrality, higher transmission quality. Second, this connection structure is simple, occupy a small space, high material utilization, carrying capacity is also large, oval