Clamping device for securely clamping a workpiece on a clamping table

A device for securely clamping a workpiece on a clamping table, the device comprising:

• a guide shoe arranged and configured to be fastened on the clamping table, the guide shoe including a substantially longitudinal body, a substantially flat bottom surface arranged and configured to engage a top surface of the table, first and second side wails extending upward from the bottom surface, a central longitudinal space between the first and second side walls, a longitudinal slot disposed on each side wall adjacent the longitudinal space, wherein the side walls, longitudinal space and slots form an inverted T-shaped cross-section which extends over the length of the guide shoe:
• a clamping claw including a first end, a second end and a center portion disposed between the first and second ends, the clamping claw arranged and configured to form a tilting lever pivotable about the center portion, the clamping claw including a clamping leg at the first end, a bracing leg disposed at the second end, and a bearing surface disposed in the center portion;
• a clamping bolt arranged and configured to pass through the clamping leg and fix the bracing leg into a clamping position such that the bracing leg securely clamps the workpiece against the table;
• a bearing plate disposed between the guide shoe and the clamping claw, the bearing plate including first and second longitudinal protrusions which are complementary in shape to the slots in the first and second side walls of the guide shoe, respectively, wherein the bearing plate is guided in a longitudinally sliding manner in the T-shaped cross-section, the bearing plate further including a bearing surface on a top portion thereof for pivotally receiving the bearing surface disposed on the center portion of the clamping claw such that the clamping claw pivots with respect to the bearing plate;
• and
• wherein the clamping bolt is threadingly received through the second end of the clamping claw and adapted to engage the bearing plate to pivot the clamping claw about its bearing surface to pivot the bracing leg into the clamping position, to secure the workpiece against the table and stabilize the bearing plate with respect to the guide shoe;
• whereby disengagement of the clamping bolt from the bearing plate allows the bearing plate to longitudinally translate with respect to the guide shoe for repositioning the clamping leg inward from a border portion of the workpiece.