Mobile phone shell side wall trepanning device

The utility model discloses a mobile phone shell side wall trepanning device which comprises a base, abutting blocks are arranged on the two sides of the base respectively, first through die holes are formed in the abutting blocks, a base is arranged between the two abutting blocks, the base can move in the vertical direction, and a second die hole is formed in the base. The surface of the base is sunken downwards to form a mounting groove, a plurality of sliding grooves are formed in the side wall of the mounting groove, one end of a sliding block is connected with a pressing die, the other end of the sliding block extends into the mounting groove, a first driving air cylinder is fixed in the mounting groove, and a piston rod of the first driving air cylinder is connected with the sliding block. The first driving air cylinder stretches out and draws back to drive the pressing die to penetrate through the first die hole. The problems that in the machining process of the mobile phone shell, trepanning operatio