Internal Circulation Type Ball Screw

Inner circulation: The inner circulation adopts the reverser to realize the ball circulation, and there are two types of reverser. Cylindrical convex key reverser, its cylindrical part is embedded in the nut, and a reverse groove 2 is opened at the end. The reverse groove is positioned by the cylindrical outer surface and the round key 1 on the upper end to ensure the alignment of the thread raceway direction. Oblate insert reverser, the reverser is a general round head flat key insert, the insert is embedded in the groove of the nut, and the end is provided with a reverse groove 3, which is positioned by the outer contour of the insert. Comparing the two reversers, the latter is smaller in size, thereby reducing the radial dimension of the nut and shortening the axial dimension. However, the dimensional accuracy of the outer contour of the reverser and the groove on the nut is relatively high.