초록 ▼

A polishing tool includes a tool body and a polishing member which is mounted rotatably on the tool body and which has a central hole unit formed through the polishing member. The working surface of the polishing member has a plurality radially extending slots which are spaced apart from each other

A polishing tool includes a tool body and a polishing member which is mounted rotatably on the tool body and which has a central hole unit formed through the polishing member. The working surface of the polishing member has a plurality radially extending slots which are spaced apart from each other in an angularly equidistant relation and which extend from the inner periphery of the working surface to the outer periphery of the working surface. A plurality of flat working surface sections are defined on the working surface of the polishing member by the slots. When a slurry consisting of a lubricating liquid and abrasive grains flows onto the working surface of the polishing member via the central hole unit and when the polishing member is rotated on the tool body, each of the abrasive grains moves across all of the slots and from the inner periphery of the working surface to the outer periphery of the working surface, by hydrodynamic effect, so as to polish positively and effectively the workpiece.

대표청구항 ▼

A polishing tool adapted to polish a workpiece which is placed in front of the tool, said tool comprising: a tool body having a slurry passage unit which is formed therein and which is adapted to permit flow of a slurry therethrough that consists of a lubricating liquid and abrasive grains; a polish

A polishing tool adapted to polish a workpiece which is placed in front of the tool, said tool comprising: a tool body having a slurry passage unit which is formed therein and which is adapted to permit flow of a slurry therethrough that consists of a lubricating liquid and abrasive grains; a polishing member mounted rotatably on said tool body and having an axially extending central hole unit formed through said member and communicated fluidly with said slurry passage unit, and a front end surface formed with a plurality of radially extending slots which are angularly spaced apart from each other and which extend from an inner periphery of said front end surface to an outer periphery of said front end surface, so as to define on said front end surface a plurality of flat working surface sections which are of a number corresponding to that of said slots, in such a manner that each of said flat working surface sections is located between an adjacent pair of said slots, said slurry flowing from said slurry passage unit of said tool body into said slots of said member via said central hole unit of said member; and a driving unit being capable of being activated so as to rotate said member on said tool body; whereby, in use, when said driving unit activates said member to rotate on said tool body and when the slurry is supplied into said slurry passage unit of said tool body, each of said abrasive grains moves from one of said slots onto one of said flat working surface sections and between the one of said flat working surface sections and the workpiece, and enters into another one of said slots, by virtue of hydrodynamic effect, with a result that said abrasive grains move from the inner periphery of said front end surface of said member to the outer periphery of said front end surface of said member.