Bearing block positioning tool

The invention discloses a bearing block positioning tool. A first pressing mechanism, a second pressing mechanism, a third pressing mechanism, an end face positioning pin and a horizontal supporting base are arranged on the front wall of a vertical installing plate. The first pressing mechanism and the horizontal supporting base are arranged at the lower left corner of the vertical installing plate. The second pressing mechanism and the end face positioning pin are arranged at the lower right corner of the vertical installing plate. The third pressing mechanism is arranged over the position between the first pressing mechanism and the second pressing mechanism. The end face positioning pin is horizontally arranged and used for supporting the end face of the lower right corner of a workpiece. The top face of the horizontal supporting base is used for supporting the end face of the lower left corner of the workpiece. A sliding positioning pin is inserted in a strip-shaped groove of the horizontal supporting base. The vertical installing plate is made of a 90-degree iron plate. The second pressing mechanism is located under the end face positioning pin. The horizontal supporting base is located on the left side of the first pressing mechanism. Clamping and positioning are convenient and fast, machining of two end faces is finished at a time through axial press fitting, and the clamping frequency is reduced. The relative precision of components is guaranteed, and meanwhile the production efficiency is improved.