Auxiliary clamping tool for tensile test of cylindrical part

The invention relates to the technical field of test equipment, and discloses an auxiliary clamping tool for a tensile test of a cylindrical part, the auxiliary clamping tool comprises two first fixing blocks and a fastener, each first fixing block is of a cuboid structure, each surface of each first fixing block is provided with at least one arc groove, the section of each arc groove is arc-shaped, and the fastener is arranged in the arc groove; the arc grooves extend to the two opposite side faces of the first fixing block, and the diameters of the arc grooves are different. The two first fixing blocks are in butt joint, and the two opposite arc grooves form a fixing groove used for clamping and fixing a cylindrical part. Mounting holes are formed in each surface of the first fixing block; the fastener penetrates through the mounting holes of the two first fixing blocks so as to fasten the two first fixing blocks. The auxiliary clamping tool is simple in structure, the clamping force is convenient to adjust