Turning tool mechanism for hydraulic oil cylinder piston rod

The utility model provides a turning tool mechanism for a hydraulic oil cylinder piston rod. The turning tool mechanism comprises a machine body. The machine body is provided with a clamp mechanism; the upper front end of the machine body is provided with a main shaft case; an output end of the main shaft case is equipped with a main shaft; the turning tool mechanism is mounted on the side surface of the output end of the main shaft case; the turning mechanism is formed by a turning tool seat on the side surface of the output end of the main shaft case; a connection plate is installed on the turning tool seat via a rotation shaft; an adjusting groove is arranged on the connection plate; and the adjusting groove is provided with an installation plate via an adjusting bolt. By the use of the turning tool mechanism for the hydraulic oil cylinder piston rod, turning tool and work piece positions can be automatically adjusted, so the work piece can be turned by the turning tool; accurate position can be achieved; and turning can be automatically adjusted and turning positions can be positioned, so the turned work piece possesses beautiful contour.