Guidance of a cutting head in relation to a material

Abstract

The invention relates to a method for guiding a cutting head (12) in relation to a material (14), wherein - at least one desired position value (x) and at least one desired speed value (v) are established by an interpolator unit (16), a position and a speed of the cutting head (12) are set by means of a drive unit (18) in dependence on the desired position value (x) and the desired speed value (v) in that a control signal (20) for the drive unit (18) is determined, a distance between the cutting head (12) and the material (14) is detected by means of a distance sensor (28) and a corresponding distance signal (30) is provided, the distance signal (30) is compared with a predetermined comparison distance (32) and a distance-control signal (64) is determined, and the control signal (20) is determined, in addition, in dependence on the distance-control signal (64), the comparison distance (32) is subtracted from the distance signal (30) and the difference is superimposed on the actual position signal (24), which is delayed by a first time period (38), in order for the distance-control signal (64) to be determined.

Description

technical field [0001] The present invention relates to a method for guiding a cutting head relative to a cutting material, by means of the cutting method carried out by the cutting head and by virtue of the relative movement of the cutting head with respect to the cutting material, incisions are introduced into the cutting material, wherein an interposer unit is At least one position setpoint and at least one speed setpoint are provided to guide the cutting head; the position and speed of the cutting head relative to the cutting material are set according to the position setpoint and the speed setpoint by means of the drive unit by: determining from the position setpoint Setpoint orientation signal, in the context of a first comparison, the actual orientation signal provided by the drive unit is compared with the setpoint orientation signal, and a control signal for the drive unit is determined as a function of the first comparison and the speed setpoint value; the cutting is ...

AI Technical Summary

Problems solved by technology

Although the use of capacitive distance sensors has proven to be reliable, it has proven to be disadvantageous that, after detection of an instantaneous distance, a certain period of time elapses before the distance sensor provides an associated distance signal

This results in the disadvantage that a corresponding time delay occurs compared to the motor sensor which supplies the actual orientation signal of the cutting head

This is especially disadvantageous for spacing adjustments with such capacitive spacing sensors

In addition, the above-mentioned disadvantages lead to strong movement overshoots, especially when the cutting head is moved to the cutting material guided by the sensor

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