GRINDING CENTER FOR POLYGONAL MATERIAL

PURPOSE:To carry out a multiproduct in-low-quantity production for polygonal materials, by providing a straight line correcting device, a both side surface correcting device, a grindstone cover opening and closing device, a grind stone exchanging device, a workpiece introducing device, etc. in a formed surface grinding machine having Y and X axis control mechanisms. CONSTITUTION:A magnet chuck 4 is replaceably set on a base on a table 3, and a grind stone bisurface correcting device 5 is provided on the side remote from the exchanging position of the chuck. A column 7 is set slidably on a guide surface perpendicular to the table 3 on the upper surface of a bed 1 at a position near to the rear side thereof, and a grind stone shaft head 8 is provided on the front surface thereof, movably in the vertical direction. An automatically opening and closing cover 11 for protecting a grind stone 10 is automatically opened and closed when the grind stone 10 is replaced with new one. Further, a grindstone correcting device 12 is arranged directly above the grindstone 10. A grind stone stocker 10 is planted on one side of the column, and the grindstones are replaced by means of a grindstone exchanging arm 17.