| 摘要 |
<p>A clamping device for portable grinding machines is part of the clamping nut (17) that can be screwed on the terminal thread run-out (13) of the driving spindle (10) in order to tighten a grinding wheel (15). The clamping nut (17) carries a non-rotatable and axially movable clamping disk (21). Both comprise annular faces (25, 26) that form together a ball groove along which clamping disk (21) bearing balls (24) can roll. The clamping disk (21) and the clamping nut (17) are coupled by longitudinal pins (36) parallel to the axis that form at the same time ball stops. A ring (29) with a ball groove (32) is axially located between the clamping disk (21) and the clamping nut (17), as well as radial pins (35) that extend into the ball track and are urged by springs (38) against the balls (24). The annular face (25) of the clamping disk (21) comprises recesses (33) into which the balls can penetrate when the actuating element (28) is rotated and the clamping disk (21) is axially released.</p> |
