The inverted bevel gear rolling machine (crowding machine) is a special equipment that is applied to the inverted cone cold forming processing of meshing teeth of the gearbox of the automobile gearbox. From the 80's, our factory successfully developed the first inverted taper roller rolling machine in China. The equipment has been updated four times. The QS-015D inverted bevel roller rolling mill and JCK260 CNC rolling machine are widely used nowadays. Realize the roll forming of two inverted cones, namely the internal gear tooth and the external tooth inverted cone.