Special fixture for processing plum blossom-shaped hole of double offset ring spanner

The invention discloses a special fixture for processing a plum blossom-shaped hole of a double offset ring spanner, having convenient clamping and comprising a bottom plate. The middle of the bottom plate is provided with a through hole mutually cooperating with the plum blossom-shaped hole of the double offset ring spanner; the bottom plate is fixedly provided with an intermediate plate; the middle of the intermediate plate is provided with a punched hole mutually cooperating with the through hole; the intermediate plate is fixedly provided with a left fixed plate and a right fixed plate respectively; a locating slot mutually cooperating with a hand shank of the double offset ring spanner is formed among the left fixed plate, the right fixed plate and the intermediate plate; the left fixed plate and the right fixed plate of the middle of the locating slot are respectively provided with a left mounting groove and a right mounting groove; and the round end of the double offset ring spanner is arranged in a locating cavity which consists of the left mounting groove, the right mounting groove and the locating slot. The invention has the advantages that the special fixture for processing a plum blossom-shaped hole of the double offset ring spanner, having the structure, has convenient clamping and high work efficiency, and can fix double offset ring spanner workpieces well; the position for clamping the workpieces is the same each time, so that frequent tool setting is not needed, and the operation is simple.