| 摘要 |
PURPOSE: A clamping device is provided to rapidly, easily, and repeatedly fix a treaded shaft. CONSTITUTION: A clamping device for fixing and non-rotary clamping a threaded shaft(20), particularly threaded shafts used as electrodes for eroding threads, comprises a hollow cylindrical shaft(1) with a clamping sleeve member(2) located at a front end with having a central bore and a rectangular aperture(4) opened to the central bore, a rectangular clamping member slidably housed in the aperture with having a plurality of thread convolutions matching the thread convolutions of the shaft to be combined with facing the central bore at a front surface, and a rotating collar located around the outside of the clamping sleeve member to move the clamping element toward the threaded shaft housed in the central bore with having an inner circular surface with a recessed portion gradually enlarged in a diametral direction at which the clamping element protrudes. By rotating the collar, a clamping element(5) is radially moved toward the threaded shaft inserted into the bore until the thread convolutions of the clamping element are engaged with the thread convolutions of the shaft in the bore. |
