Control device for a machine tool and method for controlling the machine tool with evaluation module having memory storing reference signal profile

摘要

The invention relates to a machine controller comprising a sensor module (4), an evaluation module (9) and a control module (5), and the sensor module (4) has a convertor which converts a mechanical variable acting on the sensor module (4) into a proportional electric characteristic variable, and the evaluation module (9) is connected via a first signal connection (8) to the sensor module (4) and via a second signal connection (11) to the control module (5). The evaluation module (9) generates a signal profile from the detected electric signal by means of an analysis of potential and/or change, which is compared with at least one reference signal profile stored in a memory means of the evaluation module (9) by means of a comparison module of the evaluation module (9), from which the control signal is generated. Furthermore, at least one of the two signal connections (8, 11) is based on a wireless design.

主权项

1. Machine controller comprising a sensor module (4), an evaluation module (9) and a control module (5) in which the control module (5) has means for activating or deactivating at least one drive means (6) of a machine tool (1) on the basis of an incoming control signal,
the sensor module (4) also having a convertor which converts a command into a proportional electric characteristic variable, the command comprising a physical variable acting on the sensor module (4) for a period of time, the evaluation module (9) being connected via a first signal connection (8) to the sensor module (4) and via a two-way second signal connection (11) to the control module (5), and in addition at least one of the two signal connections (8, 11) is a high-frequency local area data link, and the sensor module (4) is disposed on or in a shoe, wherein the evaluation module (9) generates a signal profile from the detected electric signal by running an analysis of potential and/or change, wherein the evaluation module (9) has a memory means in which a reference signal profile having a threshold value for an intensity of the signal is stored, the evaluation module (9) also has a comparison module which compares the detected signal profile with the stored signal profile and generates the control signal to activate or deactivate the at least one drive means when there is a rise above or drop below the threshold value throughout the period of time, and the control module (5) has a position locating or position identifying module (28) with at least two co-operating receiver stations (27) wherein an ultra-sound based wireless third signal connection (23) exists between the evaluation module (9) and the receiver stations (27), and the position locating or position identifying module (28) is configured to evaluate the travel time difference of the signals emitted simultaneously from the evaluation module (9) across the second (11) and third (23) signal connections and from this, information pertaining to position is determined.