Clamping device for processing of excircle thin wall part

A clamping device for processing the excircle of thin wall part is provided, comprising a jig body, a pressing plate, on which is provided a compression screw, which is connected onto the jig body, on which are provided an end face and a cylindrical surface for workpiece positioning. The clamping device in the utility model uses the part inner circle and the end face to perform the positioning, the clamping part is on the workpiece end face, the part undertakes axial force instead of radial force, therefore, the workpiece will not be deformed during the clamping process, with a high precision of processing. The clamping device has advantages of eliminating part clamping position, greatly improving material utilization rate, reducing manufacture cost by more than one third, and also has advantages of simple structure, easy manufacture, and high production efficiency.