Machining jig

A machining jig comprises a base, a carrier plate, a connecting rod, a fixing block, a sliding block, a sliding rail and a pushing component, one end of the carrier plate is hinged to the base, the other end of the carrier plate is a free end, a positioning pin is arranged on the carrier plate, the two ends of the connecting rod are hinged to the back face of the carrier plate and the fixing block respectively, and the pushing component is arranged on the base. The sliding block is fixed on the fixed block, the sliding rail is arranged on the base, the sliding block is connected with the sliding rail in a sliding mode, and the pushing component movably pushes the fixed block so as to adjust the inclination angle of the carrier plate relative to the base. By means of the arrangement, the angle of the mobile phone screen frame or other objects to be machined can be conveniently supported and adjusted so that the mobile phone screen frame or other objects to be machined can be subsequently machined or treated. 一