Optimization Design And Application Of Control System Of Laser Engraving Machine

The engraving process continues to develop,and traditional engraving machines have been unable to fully meet market demand.Laser processing is a non-contact engraving technology,because of its high work efficiency,reliable safety,lower noise and other characteristics are widely used in advertising,crafts processing and other industries.During the application of the laser engraving machine,some drawbacks have gradually been exposed.The main problem is that the control system is weak in processing data for controlling interpolation calculations.Therefore,the smooth processing at the processing inflection point cannot be completed,which reduces the processing accuracy of the workpiece,resulting in the processing efficiency not being further improved and the control response speed being slow.It is very important to improve the data processing capability of the control system and optimize the speed processing at the inflection point.Based on the principle of laser processing,the laser machine hardware and software are optimized for design and selection,by building a perfect laser drive to improve the data processing capability of the control system,and optimizing the data communication structure to improve the data processing capability of the control system during curve processing.The traditional engraving machine has a stand-alone structure,and a small single-chip microcomputer cannot complete sufficient interpolation operations in the processing of complex graphics.On this basis,a masterslave control system structure using FPGA and STM32 master control chip is proposed.The lower computer completes the data information interaction with the upper computer through the STM32 main control chip.Considering that the system needs to perform real-time data interaction on the lower computer position,the PC computer is connected to the lower computer position through the USB data port to complete the upper computer position to the lower computer position to realize real-time information interaction.Aiming at the large number of continuous small line segment defects in the current CNC system in curve processing,a design scheme for improving the interpolation algorithm of the control system is proposed.The traditional algorithm makes the engraving machine processing efficiency low and the control accuracy not high.To optimize the high-speed smooth processing function of continuous small line segments in the engraving machine system,a non-uniform B-spline curve is proposed to achieve a more accurate curve path fitting,by optimizing the speed planning at the corner of the curve and combining the speed forward The asymmetric S-shaped speed algorithm completes the optimization and promotion of the overall control system.This scheme effectively improves the computing power of the control system and the accuracy of interpolation operations.The non-uniform B-spline algorithm is used to more accurately fit the processing curve,and the asymmetric S-shaped speed algorithm is used to improve the control system's ability to plan the speed of the continuous small line of the curve.And add a forward-looking algorithm of speed to the interpolation operation to improve the operation speed of the interpolation algorithm.For the non-uniform B-spline algorithm and speed forward design test,the test results show that the algorithm can effectively improve the curve fitting degree and speed planning.