Patent ID: 8308419
Filing Date: 2012-11-13
Classification: B25J

Abstract:
1. A robot system using a robot to load and unload a workpiece into and from a machine tool, said machine tool having a door in a side of the machine tool through which a workpiece is loaded and unloaded, wherein said robot includes a base member installed at a position offset from a front of said door in the horizontal direction so that all parts of said robot can be prevented from overlapping said door, as viewed in a direction vertical to a side surface of said machine tool where said door is provided, a rotary member coupled to said base member so as to be rotatable about a first axis, a first arm member coupled to said rotary member so as to be able to swivel about a second axis perpendicular to said first axis, and a second arm member coupled to said first arm member so as to be able to swivel about a third axis parallel to said second axis; wherein said first axis extends slanted with respect to the vertical direction so as to head toward said door, as viewed in a direction perpendicular to the side surface of said machine tool where said door is provided; wherein the robot is fixed on the base member installed on a floor surface on which the machine tool is installed; the base member is arranged at a position facing the side surface of the machine tool where the door is provided and being offset from the front of the door, as viewed in a direction perpendicular to the side surface; the surface of the base to which the robot is fixed, as viewed in a direction perpendicular to the side surface where the door is provided, is a slanted surface slanted downward toward the floor surface in the direction toward the door; and the base member is fixed on the slanted surface of the base.