Servo center frame

The utility model relates to a center frame capable of accurately controlling the clamping diameter and the clamping force and generating a feedback signal, in particular to a servo center frame for amachine tool to configure and clamp a thin-wall part. The device comprises a roller supporting part, a centering clamping mechanism part, a servo driving part and a control system part, wherein the roller supporting part is mechanically connected with the centering and clamping mechanism part, and the centering and clamping mechanism part is mechanically connected with the servo driving part; thecontrol system part is connected with the idler wheel supporting part, the centering clamping mechanism part and the servo driving part, and the clamping diameter and the clamping force of the idlerwheel supporting part of the servo center frame can be set through the control system part. The clamping force and the clamping diameter of the center frame can be accurately set, and clamping machining of thin-wall long-cylind