Surface roughening device for mechanical workpiece machining

The invention discloses a surface roughening device for mechanical workpiece machining, and relates to the technical field of mechanical workpiece machining equipment. Multiple outer roughening wheels and a center roughening wheel are adopted to quickly realize roughening of workpieces; roughening particle sizes of roughening surfaces of the outer roughening wheels and the center roughening wheel are different; after the workpieces are roughened by the outer roughening wheels and the center roughening wheel, different roughening marks on the surfaces can be realized, the roughening roughness effect is achieved, and the roughening efficiency is effectively guaranteed; meanwhile, during roughening, a roughening pressure control module is connected with the outer roughening wheels, so that the roughening pressure control module adjusts the roughening pressure between the outer roughening wheels and the surfaces of workpieces to be roughened during roughening; the roughening pressure is different, and the depths