Steel bar connecting end polishing and threading equipment and application method thereof

The invention relates to the field of manufacturing equipment, in particular to steel bar connecting end polishing and threading equipment and the application method thereof. The equipment is characterized in that a rolling and threading device and a polishing device are arranged on a machine frame, the rolling and threading device is fixed to the machine frame, and the rolling and threading device is provided with a steel bar clamping position; the polishing device is located on one side of the clamping position, and the polishing device can move in the direction of the axis of the clamping position. The equipment has the advantages that steel bar burrs can be polished conveniently and quickly, secondary transfer and secondary machining are avoided, and then working efficiency is improved; meanwhile, burrs at the ends of butt joint steel bars are polished off, so that workers are prevented from being cut by the burrs at the ends of butt joint steel bars in the steel bar transfer process, and safety is guaranteed; furthermore, the number of threads in a connecting sleeve meets the butt joint requirement in the steel bar butt joint process, so that steel bar butt joint firmness is ensured and a project meets the quality requirement.