Measuring the punching forces

inside the tool

  • Small nominal distance
  • Rapidly rising force characteristics
  • Pre-loaded load cell
  • Fits into a small space

Task

Inside the tool of a die-cutter is fitted a load cell under spring-loading. The spring force holds the sensor body in place and ensures that all the components contact one another with zero backlash in their direction of action. The load cell itself must occupy the smallest possible space, to prevent weakening the construction of the tool unnecessarily. Yet at the same time it must be repeatedly capable of absorbing the sudden jumps in force that occur during the machining process. The measurements from the load cell are ultimately an indication of the level of wear to the cutting tool and hence the quality of the punched edges.

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