| 摘要 |
PURPOSE:To erase cracks generated on the processed surface and thus prevent the strength of a brittle workpiece form being lowered by applying laser beams on the processed surface after processing a workpiece consisting of a brittle material, and dissolving additives in a grain boundary, and then filling cracks therewith. CONSTITUTION:When grinding process for a workpiece W is completed by the grinding wheel G of a plane grinder 10 and signals denoting grinding finish from a grinding control unit to a robot control unit are given, in the robot control unit, grinding data used in the grinding process from the grinding control unit is read for seeking for the processing surface position on the workpiece, and by driving a robot 20, air from an air blowing device is blown on the processing surface toward the workpiece W through a nozzle 27 so as to effect draining of the processing surface. Next, laser beams are directed to a laser torch 26 from a laser oscillator, and in the same manner, by driving the robot 20, laser beam are applied on the processing surface for dissolving the additives contained in the workpiece W, as a result, cracks generated during grinding process are filled with the additives and thus cracks are erased thereby. |
