Device for measuring the bias force between two objects

摘要

The bias force between two objects is measured with an expansion element which is adapted to be inserted between the two objects. The expansion element is formed with a flexible contact surface for contacting the objects. The flexible contact surface is formed by a flexible envelope of a pressure cushion. A pressure source is in fluidic communication with the pressure cushion. The pressure in the expansion element is a measure of a magnitude of the bias force between the two objects. The device is particularly suited for measuring the bias force between two mutually contacting cylinder bearers in a rotary printing machine. The expansion element is thereby inserted into a gap formed between two cylinders and it is thereupon subjected to pressure from the pressure source, which forces the cylinders apart until a gap appears between the cylinder bearers. The pressure measured at that instant corresponds to the magnitude of the bias force between the cylinder bearers.