Patent ID: 7044841
Filing Date: 2006-05-16
Classification: B24B

Abstract:
1. A grinding machine comprising: a driving unit including a power source and a control switch for controlling starting and stopping of said power source, said power source including a housing and a driving rod or shaft journalled within said housing, said driving shaft having opposite first and second ends disposed outwardly of said housing; a grinding wheel unit including a support seat disposed fixedly on said housing, a grinding wheel connected fixedly to said first end of said driving shaft, and a protective cover mounted to said support seat for covering a lower portion of said grinding wheel, said protective cover cooperating with said support seat to define a dust-receiving chamber therebetween, said grinding wheel being disposed between said support seat and said protective cover; an abrasive belt unit including a base disposed fixedly on said housing, at least one driven pulley disposed rotatably in said base, a driving pulley disposed rotatably in said base and connected fixedly to said second end of said driving shaft, an abrasive belt trained on said driving pulley and said driven pulley, and a side cover connected fixedly to said base to define an accommodating chamber therebetween; and a dust-collecting device including a dust-guiding unit including a conduit connected fixedly to said support seat of said grinding wheel unit and said base of said abrasive belt unit at two opposite ends thereof, a dust passage port formed through said side cover of said abrasive belt unit, and a dust-guiding seat connected fixedly to said side cover of said abrasive belt unit and said dust-collecting seat so as to define a dust-guiding chamber thereamong, said dust-guiding chamber being in fluid communication with said dust passage port in said side cover and said dust inlet in said dust-collecting seat so that dust is induced by said suction fan assembly to move from said dust-receiving chamber in said grinding wheel unit into said dust-collecting seat via a path defined by said conduit, said accommodating chamber and said dust-guiding chamber.