APPARATUS AND METHOD FOR FASTENING BOLT IN HIGH SPEED TENSILE TESTER

摘要

The present invention is a fastening bolt fastening apparatus and method of the high-speed tensile tester for pressing the wedge between the upper, lower grip is installed on at least one of the outer surface of any one of the upper, lower grip, wherein the tightening bolt is installed around the grip A fixing part which is installed on the holding part to selectively hold the bolt by performing forward and backward operations, a fastening part which rotates the bolt held by the fixing part in a fastening direction and fastens to have a predetermined tightening force, and is installed on the fastening part And a detector for detecting the bolt fastening force of the fastening part and a controller for detecting the bolt fastening force of the detector to stop the fastening operation of the fastening part at a predetermined bolt fastening force. Optimum tightening by strength of material for tensile test at high speed on the material used Calculate the tightening amount of the bolt and fasten the tightening bolts at the same tightening amount by the automatic fastening device at the same time, so that the wedge can be removed smoothly and easily during the test to prevent the cylinder speed drop. There is. ; High Speed Tensile Testing Machines, Fasteners, Fixtures, Bolts, Fastening Forces, Detectors, Controllers