Right-angle tenon clamping device

The utility model discloses a right-angle tenon clamping device which comprises a pressing piece, a compression spring, a telescopic rod, a cushion block, a screwing piece, a locking piece, a tenon piece and a mortise. The internal hexagonal wrench is used for rotating and adjusting the screwing piece, so that the telescopic rod is stretched or shortened, the length of the telescopic rod is changed to drive the pressing piece to be tightly attached to the tenon cheek of the tenon piece, and a certain pressure is applied to the pressing piece in cooperation with elastic potential energy contained in the tightening state of the compression spring; the cushion block can be continuously, effectively and tightly connected to the tenon piece, so that the expected clamping effect of the tenon piece is achieved, waste of tenon materials caused by errors of the production process is avoided, the modularized threaded connection design is adopted, each part can meet the clamping requirement, and meanwhile the clamping e