Support tool used on machine tool for processing barrel type long parts

The utility model relates to a support tool used on a machine tool for processing barrel type long parts, which comprises a check block. The check block is movably connected to a baffle through a first bolt, and the baffle is arranged at the upper portion of the check block. Two horizontal grooves disposed front and back and matched with the machine tool are arranged on the lower surface of the baffle. Right-angled triangle supports are disposed on the upper surfaces of the front portion and the back portion of the baffle, and vertical planes of the two right-angled triangle supports are oppositely placed. An inclined plane of each triangle support is connected with a cylinder body, and the lower surface of the cylinder body is connected with an end cover through a bolt. A support part is disposed in each cylinder body, and a regulating part is inserted in each support part. The tail end of the regulating part penetrates out of the support part and is connected with a handle, one end of the handle penetrates