PURPOSE: A structure for a surveyor for fixing a workpiece is provided to securely fix the workpiece on a surveyor and to easily mount the workpiece on or separate the workpiece from the surveyor. CONSTITUTION: A structure for a surveyor for fixing a workpiece comprises a workpiece fixing plate(10) for fixing a whole workpiece on the top surface and having a fitting groove formed from the front end to the rear end; a fixing member(20) having a fitting protrusion protruding on the top surface to be coupled with the fitting groove and a pressurizing unit installation part forming a certain space portion at the rear of the fitting protrusion by a pair of side walls and a rear wall; a pressurizing unit body provided with a pressurizing part integrated with a pressing part; a hinge to rotatably install the pressurizing unit body between both side walls of the pressurizing unit installation part; and a pressurizing unit including springs which apply upward elastic force to the rear of the pressing part.
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