| 摘要 |
A device for holding delicate workpieces, particularly optical lenses, includes a membrane having a clamping surface. To receive a workpiece, the membrane is pressurized and bulges in such a manner that the clamping surface is enlarged and becomes funnel-shaped. In order to clamp the workpiece, the pressure in the membrane is decreased so that the membrane assumes a shape in which the clamping surface is constricted and holds the workpiece with a force which is evenly distributed over its entire periphery, through which deformation and destruction of workpieces is safely avoided.
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