PORTABLE TYPE GRINDING MACHINE

摘要

PURPOSE: To provide a new portable grinder and a tool used for it for grinding a corner angled workpiece even at its corner and at its inside vertical edge existing at the edge of a ground face. CONSTITUTION: An angular portion 102 having an angle of 90 degrees or less is formed at least one corner of a tool 3 which highly vibrates at a small vibrating angle about a pivotal axis. A side edge 3a ranging adjacent to the angular portion is formed as a swollen out side face protrudedly bent outward. During small vibration motion, the angular portion is intruded to the corner in the corner area of a workpiece for grinding and the swollen side edge 3a of the tool grinds the angular corner area with sliding vibration along the inside vertical edge of the workpiece.