Diaphragm type clamping device and workpiece fixing device

Abstract

The problem this invention aims to solve is to provide a diaphragm-type clamping device that uses a toggle mechanism for opening and closing. To solve this problem, the diaphragm-type clamping device 200 of this invention uses a toggle mechanism 20 to move an intermediate sleeve 25, positioned along the central axis C of the main shaft 10, in the back-and-forth direction along the central axis C, and has clamping jaws 270 that open and close corresponding to the movement of the intermediate sleeve 25; furthermore, it is easily detachable from the main shaft 10.