A GEAR-TOOL BOX STRUCTURE OF POLISHING MACHINE

摘要

PURPOSE: A gear tool box structure for a polishing machine is provided to control polishing performance of a polisher by including an upper and lower tool box, and freely moving or restricting rotation of the lower tool box if necessary. CONSTITUTION: A polisher(4) polishes the surface of stone such as concrete. A tool box part(3) includes an upper tool box(3a) and a lower tool box(3b). The upper tool box includes a bearing hub assembly(30a). The lower tool box is installed under the upper tool box. The lower tool box is freely rotated around the bearing hub assembly for a polishing operation of the polisher by centrifugal force due to friction. An idle stopper controls free rotation of the lower tool box according to work.