Fixture - 820 Automatic Clamping

An Automatic Clamp is held in clamping position by mechanical means when the clamping power source fails. The prevention of an alternate source of power avoids the continued machining of a part that is no longer clamped and the resultant damage. Strong springs, toggle linkages, cone locks, wrench-pressured oil, prestressed diaphragm clamps, small angle wedge cams, or spring-loaded collets or chucks are the mechanical means of holding automatic clamps. Frequently stops are added to prevent damage to the fixture in the event no parts is place during the clamping operation.