Trust is good, control is better
Based on his apprenticeship a machine operator or programmer has been taught to work in such a manner that a workpiece does not get destructed, e.g. when programming the manufacturing steps he builds in a lot of safety measures to minimize this risk. However, in reality, effective measurement data regarding the holding forces of a clamping device, and also in regards to the clamping forces of the clamping cylinder itself can only be obtained as vague reference values. A machine operator who knows how dependent the holding forces of a clamping device derive from its current maintenance status are, or from the centrifugal force losses while turning with jaw chucks, is extremely sceptical of such makeshift calculations and hence builds in a high safety value. Machining of easily deformable components is also extremely critical. Usually only a very small margin of holding force is available. If an item is clamped too strongly, a sensitive component will be excessively deformed. Applying to little clamping force results in an inefficient set-up for rational machining.
Safe results – even with mandrels
However, the globalization of markets requires an optimum of the machining process. Those who face stiff competition can no longer afford to manufacture just by “feeling”. Measurement data is demanded! It not only functions perfectly for outer diameters and during rotation, it also precisely measures the holding force of mandrels for inner diameters.