Patent ID: 8282333

Claim:
A workpiece transfer robot system comprising: a machine tool provided with a workpiece support section; and a robot capable of transferring a workpiece relative to said workpiece support section of said machine tool; said machine tool comprising a cover surrounding at least said workpiece support section, said cover including a first side wall provided with a first opening usable for a workpiece transferring task of said robot; said robot comprising: a track member defining a traveling axis extending in a direction perpendicular to said first side wall of said cover of said machine tool; a slider attached to said track member and capable of traveling along said traveling axis; a first arm attached to said slider and capable of swinging about a first swing axis; a second arm attached to said first arm and capable of swinging about a second swing axis parallel to said first swing axis; and a workpiece hold section provided on said second arm and capable of accessing said workpiece support section through said first opening of said cover of said machine tool, wherein said traveling axis obliquely intersects with said first swing axis; wherein said traveling axis and said first swing axis are arranged in a virtual plane extending horizontally to a floor face on which said robot is installed; and wherein said first arm extends obliquely relative to said track member.