Mechanical upward-pull type internal broacher

A mechanical upward-pull type internal broacher comprises a base and a broacher body. The base is provided with a main broach clamping base which is provided with a main broach clamping part for fixing the bottom of a broach. The broacher body is provided with rolling guide rail pairs. The two sides of the main broach clamping base are respectively provided with a rolling lead screw pair. A main slide carriage is located above the main broach clamping base. The two sides of the front end of the main slide carriage are connected with the rolling lead screw pairs respectively, and the two sides of the back end of the main slide carriage are connected with the rolling guide rail pairs respectively. The main slide carriage is driven by the rolling lead screw pairs to horizontally move up and down along the rolling guide rail pairs, and the two rolling lead screw pairs and the two rolling guide rail pairs are arranged in an isosceles trapezoid mode. The broacher body is further provided with a transmission part an