Patent ID: 8944887
Filing Date: 2015-02-03
Classification: B24B

Abstract:
1. An apparatus for processing a first workpiece and a second workpiece comprising: a first spindle configured to hold said first workpiece; a second spindle configured to hold said second workpiece; a bridge element laterally movable relative to said first and second spindles; a first grinding wheel coupled to said bridge element; a second grinding wheel coupled to said bridge element, and laterally displaced from said first grinding wheel; a controller in communication with said bridge element, said controller directing said bridge element to move laterally relative to said first and second spindles such that at least one of said first and second grinding wheels overlies at least one of a first surface of said first workpiece and a second surface of said second workpiece to condition said at least one of said first and second surfaces, and said controller further directing said bridge element to move laterally relative to said first and second spindles such that said first grinding wheel overlies an outer edge of said first workpiece to trim said outer edge of said first workpiece and said second grinding wheel is laterally displaced out of contact with said second workpiece; a seal flap coupled to an edge of said bridge element; and a seal flap control element in communication with said seal flap for controlling a position of said seal flap in response to a bridge position of said bridge element, said position being one of an up position and a down position, wherein said seal flap is placed in said up position when said bridge element is directed to move laterally, and said seal flap is placed in said down position when said outer edge of said first workpiece is being trimmed.