The utility model discloses a curved surface steel sheet trompil device, the bearing marking machine comprises a mounting base plate, the last fixedly connected with horizontal pole of mounting plate,two slides that distribute are installed to the terminal fixedly connected with mounting panel of horizontal pole about being on the mounting panel, and the slide includes and spout and rack is equipped with the pivot between spout and the rack, is equipped with the gear in the pivot, and wheel and rack meshing and card are established in the spout, are equipped with the bearing between gear andthe pivot, the top of pivot is connected with the hand wheel, and the bottom is connected with the landing leg seat, it has left branch leg and upper right landing leg to articulate on the landing legseat, it has right side landing leg down to hinge on the upper right landing leg, and the right side is connected with the mounting groove on the landing leg down, installs on the mounting groove andinstalls the piece, installs the flame cut rifle on the installation piece, the cover has spring and cover to be equipped with in the spring sleeve on the flame cut rifle, spring housing bobbin baseportion is connected with the support frame, has that the quality is light and handy, easy operation, swift accuracy and an efficient advantage.