Sheet metal drilling frock

The utility model discloses a sheet metal drilling frock, including the block, open the recess that has peripheral profile and work piece to suit on the block, the position in the corresponding work piece hole in bottom of recess is equipped with the boss that supports the work piece, the boss upper surface is opened has the blind hole that is greater than the work piece hole with the coaxial and diameter in work piece hole. The sheet metal work piece supports in as for the recess and by the boss owing to have the blind hole on the boss, the blind hole gets into after the drill bit hole on the work piece and in, can not lead to the fact the damage to the block, the boss is strong to sheet metal supporting role simultaneously, the drilling position precision height.