Hydraulic pressure interpolates rotation formula clamping device for CNC tube bending machine

The utility model discloses a hydraulic pressure interpolates rotation formula clamping device for CNC tube bending machine belongs to the CNC tube bending machine field, and it has solved current for the CNC tube bending machine among clamping device when hydraulic controller and clamping device synchronous revolution easy oil leak affect using effect and life's problem. The utility model discloses a pneumatic cylinder and hydraulic controller, pneumatic cylinder include cylinder body anterior segment, cylinder body back end and piston rod, and cylinder body anterior segment and cylinder body back end junction set up first oil pocket, and the piston rod is provided with the second oil pocket with cylinder body back end junction, and hydraulic controller includes the fuel feeding seat, sets up first fuel feeding chamber, the second fuel feeding chamber on the fuel feeding seat and set up first oil circuit and the second oil circuit in the cylinder body back end. The utility model discloses can make hydraulic