초록 ▼

This is a vacuum clamp for holding workpieces which assures that the workpiece is held without distortion. This is accomplished by providing a fixed support, with a convex surface, and a flexible seal around the fixed support so that when a vacuum is drawn within the seal the workpiece being held ab

This is a vacuum clamp for holding workpieces which assures that the workpiece is held without distortion. This is accomplished by providing a fixed support, with a convex surface, and a flexible seal around the fixed support so that when a vacuum is drawn within the seal the workpiece being held abuts the fixed support tangentially. The convex surface of the support does not force the workpiece to conform to the surface of the support as it would if the surface of the support were flat.

대표청구항 ▼

In a vacuum operating clamp for holding a workpiece in a fixed plane, plural workholding members of a fixed length fixedly mounted on a base, each of said workholding members having a concavity on its upper surface, a flexible sealing member on each of said workholding members around said surface, a

In a vacuum operating clamp for holding a workpiece in a fixed plane, plural workholding members of a fixed length fixedly mounted on a base, each of said workholding members having a concavity on its upper surface, a flexible sealing member on each of said workholding members around said surface, a ball in said concavity, and extending above the upper surface of said workholding member, means adapted to support the upper edge of the sealing member above the upper surface of said ball, and vacuum means passing through said workholding member through which a vacuum may be drawn between a workpiece overlying said flexible sealing member and said upper surface of said ball whereby said work is clamped onto and supported tangentially to said upper surface of said ball without distortion.