A die block apparatus for shaping workpieces by way of die stamping includes a die block (40), a first sliding block (10), a second sliding block (30), and a stopper block (50). The die block is dimensioned to receive the first and second sliding blocks and the stopper block. The first sliding block includes a body (11), a pair of inclined rails (16) extending from opposite lateral sides of the body, and a protrusion (17) extending outwardly from the body. The body has a vertical inner surface (12). A groove (14) is defined in the inner surface. The protrusion has a vertical outer surface (18). The second sliding block is a mirror image of the first sliding block. The stopper block includes a base (54) and a vertical beam (52). The stopper block has a vertical contact surface (56), for abutting the outer surface of the first sliding block.