Armin Bijanzad 3rd week definition

Adequate clamping force

The workholder must hold the workpiece immobile against the forces of gravity,centrifugal forces,inertial forces, and cutting forces.Milling and broaching operations, in particular ,tend to pull the workpiece out of the fixture, and the designer must calculate these machining forces against the fixture's holding capacity. The device must be rigid. (DeGarmo's materials and processes in manufacturing J. Temple Black, Ernest Paul DeGarmo, Ronald A. Kohser
p.342)