Cutting head height control method and laser cutting machine

Abstract

The invention relates to the field of laser machining, in particular to a cutting head height control method and a laser cutting machine. The cutting head height control method comprises the followingsteps that an MTX system controls rapid descending of a cutting head of the laser cutting machine; the cutting head descends to the height detection area of a height sensor, the MTX system receives the signal value fed back by the height sensor and a Z-axis encoder and conducts rapid processing, and then the command value is output to control the cutting head to decelerate; and the above steps are repeatedly conducted till the cutting head reaches the set height, and accurate stopping is conducted. After the cutting head descends, the MTX system is used for controlling the cutting head to rapidly descend, and stroke consumed time is greatly shortened; and when the cutting head enters the height detection area, the MTX system rapidly processes the fed-back signal value, and signals are fedback to control the cutting head to decelerate. Compared with a traditional numerical control system, the processing efficiency and control precision of the MTX system are higher, due to accurate andstable control of the MTX system, the problem that a cutting head runs and smashes a plate is solved, and the effect of rapidness and stability in the process from cutting head descending to stoppingis achieved.

Description

technical field [0001] The invention relates to the field of laser processing, in particular to a method for controlling the height of a cutting head and a laser cutting machine. Background technique [0002] At present, many domestic and foreign laser flat cutting machines have corresponding height control schemes according to the feedback value of their height sensors and different numerical control systems, to control the cutting head to descend steadily from a high place to a position at a specified height from the board surface. However, many control schemes currently on the market have the defect that the cutting head's descending speed is slow or the descending speed is fast but the control is unstable, so it is urgent to improve. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a cutting head height control method and a laser cutting machine with fast descending speed and stable control in view of the abov...

AI Technical Summary

Problems solved by technology

However, many control schemes currently on the market have the defect that the cutting head’s descending speed is slow or the descending speed is fast but the control is unstable, so it is urgent to improve

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