| 摘要 |
PURPOSE:To prevent loading of a grind stone and prevent generation of droop etc. at the tip of an electrode by pressing and rotating a material to be joined against an elastic grindstone made by adhering grains on an elastic body of network structure, and incorporating the driving device in the control device of a welding robot. CONSTITUTION:A grindstone 4 is attached to the driving shaft 3 of the driving device 2. The grindstone 4 is formed by bonding grains on an elastic material of three-dimensional skeletoal network structure, and this is mounted on both sides of a frame 4. This grinding device is placed on the frame within movable range of an arm H of the welding robot, and connected to the control device of the welding robot, and controlled together by the control signal. When the welding robot performed spot welding specified number of times, the robot arm H is moved to the grinding device, and the tip of electrode D at the tip of the arm H is pressed against the grinding face. At the same time, the driving device 2 is turned on to rotate the grind stone 4, and the tip of the electrode 4 is ground. Thus, long constinued operation of the spot welding robot becomes possible. |
