Bolt for fastening soft material of robot and used on surface of soft material

The invention belongs to the field of bolt pressing, and particularly relates to a bolt for fastening a soft material of a robot and used on the surface of the soft material, comprising a bolt head, afirst screw, a first bevel gear, a circular ring, a pressing circular ring, an accommodating cavity, a spring, a wedge, a guide groove, a first guide groove and pressing mechanisms, wherein the outercircle face of the first screw is provided with outer threads, one end of the first screw is fixedly arranged on the end face of the bolt head, the inner circle face of the first bevel gear is provided with internal threads, the accommodating cavity is formed in the first bevel gear, the non-through guide groove is formed in the accommodating cavity, and the first bevel gear is arranged at the end, far away from the bolt head, of the first screw through threaded fit. The three pressing mechanisms reduce damage to the surface of a workpiece caused by force application through movement of pressing wheels on the surface