齿轮在啮合过程中,为要达到啮合平稳,必须保证相互啮合齿轮的基节相等。但是,由于轮齿在受力后引起的弹性变形,使主动齿轮的基节t_(f1)受压缩短,而从动齿轮的基节t_(f2)则受拉伸长,致使两齿轮的基节不相等,因而即使是齿轮的基节制造得很准确,而在实际啮合过程中其基节仍然是不相等的。下面就以下两种情况来说明,由于 Gears in the process of meshing, in order to achieve a smooth meshing, meshing gears must ensure that the base section is equal. However, due to the elastic deformation caused by the gear tooth, the base gear t_ (f1) of the driving gear is compressed and shortened, while the base gear t_ (f2) of the driven gear is stretched so that the base The knuckles are not equal, so even though the knuckle of the gear is made very accurately, the knuckles of the knuckle are still unequal during the actual engagement. The following two situations to illustrate, due