| 摘要 |
PROBLEM TO BE SOLVED: To provide a fastening torque adjustment device of a screw by which predetermined fastening torque with less variation is obtained.SOLUTION: A fastening torque adjustment device of a screw comprises: clutch means; a base; a circular recess formed at a position centering on a center line of the base; a drum rotatably inserted into the recess via a shaft bearing; an installation part to which a rotary part of a screw fastening tool is attachably/detachably installed; and a connection part which is attachably/detachably installed to a socket to be attachably/detachably installed to the screw. The clutch means comprises a pressure bolt screwed to a screw hole pierced to the base, the tip of the pressure bolt presses a circumferential trunk of the drum, and the clutch means is constituted to operate by fastening the screw by the screw fastening tool until the tip of the pressure bolt slides on the circumferential trunk of the drum. |
