| 摘要 |
<p>In an electrical portable polishing machine tool for the machining of surfaces of materials essentially composed by a body (10, 11, 12) encasing a vertical-axis electrical motor, (13) provided with gripping handle (20) and assembled, through interposed elastic elements, (34) on a polishing plate (18) onto which an abrasive sheet (19) is placed, both said plate (18) and said sheet (19) being provided with a plurality of apertures (36) for the passage and the suction of the dust produced by said surface machining, in the lower part of such body (10, 11, 12)a fan (27) is placed, which is operatively controlled by a kinematic couple (29, 30) driven by the shaft (14) of said motor,(13) such as to generate a turning speed of said fan (27) greater than that of said shaft (14) of said motor, (13) said fan (27) being positioned within a chamber (22) connected both to said plurality of openings (36) and to an outwards suction duct. (23)</p> |
