Grey cylinder of red piston controls the fixture via gear rack drives. Clamping planes of the three racks create a variable uniform triagular prism, center of its base is stationary.
Floating cylinder moves two pink jaws synchonically. The slider-crank mechanisms of orange conrods bear inconsiderable load and ensure that displacements of the two jaws are equal.
Clamping a workpiece (in yellow, cut off half for easy understanding) by a hydraulic cylinder through a wedge and two orange levers. Two violet pins are for positioning the workpiece. …
The fixture can adapt to various heights of the clamped object (in yellow) thanks to various angular positions between the blue hexagon and the green clamp bar. To change the …