Numerical-control-milling disc workpiece composite clamp

The utility model discloses a numerical-control-milling disc workpiece composite clamp which can solve the problems that due to an existing common clamp, clamping force is not easy to control, and universality of the clamp is low. The numerical-control-milling disc workpiece composite clamp comprises a sliding rail, a large adjusting screw rod, a moving block, a large clamping block, a small adjusting screw rod, a fixing block and a small clamping block. The lower end of the sliding rail is arranged on a clamp seat, and the upper end of the sliding rail is pressed on the concave edge of the lower end of the moving block. The large adjusting screw rod is meshed with the moving block, and the clamping face of the large clamping block is a cylindrical face. The lower end of the large claming block is pressed on the concave edge of the upper end of the moving block, and the upper end of the large clamping block is provided with a groove. The section of the upper end of the groove is rectangular, and the lower end of the groove is a dovetail groove. The fixing block is fixed on the side end of the groove of the large clamping block, and the upper end of the small clamping block is arranged at the upper end of the groove of the large clamping block. The lower end of the small claming block is embedded in the dovetail groove at the lower end of the groove of the large clamping block, and the clamping face of the small clamping block is a cylindrical face. The small adjusting screw rod is meshed with the fixing block, and one end of the small adjusting screw rod is fixedly connected with the small clamping block.