Drill bit of construction drill

The embodiment of the utility model provides a drill bit of a construction drill, which comprises a drill bit body with a cutter mounting groove at the end part; the cutter is embedded in the cutter mounting groove and comprises a first mounting surface and a second mounting surface which are oppositely arranged; the positioning part is arranged between the cutter and the cutter mounting position, and comprises a first positioning part arranged between the first mounting surface and the cutter mounting position, and a second positioning part arranged between the second mounting surface and the cutter mounting position; and the second positioning part is arranged between the second mounting surface and the cutter mounting position. The technical problem that when a construction drill bit and an alloy sheet are welded, the widths of welding seams on the two faces of the alloy sheet are not uniform is solved. 本实用新型实施例提供了一种建工钻钻头，包括：钻头本体，端部设有刀具安装槽；刀具，嵌设在所述刀具安装槽内，包括相对设置的第一安装面和第二安装面；定位部，设置在所述刀具与所述刀具安装位之间，包括:第一定位部，设置