Cylinder part machining die

The invention discloses a cylinder part machining mold, and belongs to the technical field of molds, the cylinder part machining mold comprises an upper mold and a lower mold, an abutting mechanism used for abutting against the inner wall of a cylinder is fixedly arranged on the upper mold, the abutting mechanism comprises a core rod, a fixing plate, a telescopic abutting plate, a pressing plate and a pressing cover, the core rod comprises an upper end part and a lower end part, and the fixing plate is fixedly arranged on the upper mold. The core rod and the upper die are fixedly arranged, the fixing plate and the upper end portion are arranged in a sliding mode, the multiple telescopic abutting plates are evenly arranged in the circumferential direction of the fixing plate, limiting grooves are formed in the telescopic abutting plates, and limiting rods are fixedly arranged on the fixing plate. Through the arrangement of the abutting mechanism, the multiple telescopic abutting plates abut against all angles