In progressive tools, there is a danger of force enlargement on packaging stations. This can result in damage on punch or die. In existing tools we avoid this form of damage by installing mechanical safety mechanisms directly above the punch. Safety mechanisms differ from one another, which is discussed in the first part of the work. A new principle for preventing the damage, based on usage of force sensors instead of safety mechanisms, is presented later on. The idea is to connect signals from the sensors to the press controller, which would shut down the machine in case of a force increase. This master's thesis presents a test installation of one sensor, where a separate measurement chain was established for data acquisition. With experiments we proved the appropriateness of new protection principle, assuming the selection of appropriate measuring equipment. According to the dynamics of the process, sufficiently high sampling rate should be used.
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