Curved frock of

The utility model discloses a curved frock of, including the backup pad, the equal fixedly connected with supporting leg in both sides of backup pad bottom, the quantity of supporting leg be four, thetop fixedly connected with workstation of backup pad, there is the wheel of buckling at the top of workstation through rotation axis and bearing swing joint, and the return bend groove has been setedup on the surface of the wheel of buckling, and one side threaded connection of the wheel of buckling has transmission handle, and the top of workstation just is located the right side fixedly connected with who takes turns that buckles and fails the tube sheet. The utility model discloses a casing, trompil, connecting plate, guiding axle, maneuvering board, screw hole, spiral shell rasp bar, stopper, joint board, the cooperation of rotating hand wheel, first joint groove and second joint groove are used, can be according to steel tube machining's demand and change different defeated tube sheets, and easy operation, c