Fixture for simultaneously machining multiple workpieces of ball pin

The utility model discloses a clamp for simultaneously machining multiple workpieces of a ball pin. The clamp comprises a clamp seat, a plurality of ball pin positioning mechanisms and a pressing mechanism, the pressing mechanism comprises a column body, a plurality of swing pressing arms, a conical column, a plurality of radial pressing pins and a driving cylinder. A central hole and a plurality of radial holes are formed in the column body; the conical column is in sliding fit with the central hole; the pressing pins are in one-to-one sliding fit with the radial holes; one end of each pressing pin is in contact fit with the outer conical surface of the conical column; each swinging pressing arm is rotatably arranged on the column body; the output end of the driving cylinder is connected with the conical column; the ball pin positioning mechanism comprises a ball part positioning table and a rod part positioning block; and the ball pin positioning mechanisms are in one-to-one correspondence with the swinging