GRINDING APPARATUS

摘要

PURPOSE: A polishing device is provided to control a forward driving power of abrasive friction by installing an electronic brake on a wheel and to use an abrasive material until being completely worn away by a cover which vertically moves with an abrasive material. CONSTITUTION: A polishing device comprises: a body(100) wherein a wheel(120) is installed to move the body; a grinding unit(200) which is rotating on a surface to be grounded with descending a rotary shaft to the objective surface; a cover(300) wherein a grinding chamber(310) which surrounds the grinding unit is divided in order to prevent scattering of dust; and a dust collecting unit which inhales and filters the dust in the cover.