Abstract: A method for monitoring and assessing correct position Pi of a work slide of a wedge drive tool in a press, without a position sensor. The slide of the wedge drive tool is actuated from an end position (XE) back to the starting position (XA) of the slide by a spring. The spring is arranged in the wedge drive tool. The press is opened from a lower press position to an upper press position while a slide bed of the wedge drive tool is relieved. The position of the slide is indirectly detected in that at least the restoring force of the spring is detected and evaluated.

Abstract: The invention relates to a monitoring sensor (1) for measuring, receiving and transmitting a physical variable (P) of a gas pressure spring (2), comprising a sensor element (3) and a pressure relief opening (4), characterized in that the pressure relief opening (4) can be switched from an operating state into a safety state by remotely triggering the sensor element (3) in order to evacuate the gas pressure spring (2), wherein the monitoring sensor (1) is designed with a connection device (5), which can be detached in accordance with the intended use, for connection to a coupling (6) of the gas pressure spring (2).

Abstract: A method for monitoring the position and assessing the correct position Pi of a work slide (5) of a wedge drive tool (2) in a press (11), without a position sensor. The slide (5) of the wedge drive tool (2) is actuated from an end position (XE) back to the starting position (XA) of the slide (5) by a spring (10). The spring (10) is arranged in the wedge drive tool (2). The press (11) is opened from a lower press position to an upper press position while a slide bed (5B) of the wedge drive tool (2) is relieved. The position of the slide (5) is indirectly detected in that at least the restoring force of the spring (10) is detected and evaluated.

Abstract: A gas pressure spring (1), in particular for absorbing stroke movements in a tool or in a machine, is designed and developed, with respect to the replicability and predictability of the behavior during use, as a function of the respective use conditions such that one or more measurement means for monitoring at least one physical measurement variable which occurs inside and/or at the gas pressure spring are provided. Furthermore, a device and a method for monitoring at least one physical measurement variable which occurs inside and/or at a gas pressure spring (1) are proposed.