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CN-121988867-A - Laser flight processing control method, laser processing system and laser processing equipment

CN121988867ACN 121988867 ACN121988867 ACN 121988867ACN-121988867-A

Abstract

The application relates to the technical field of laser processing control and discloses a laser flight processing control method, a laser processing system and laser processing equipment, which comprise the steps of generating a position instruction and a laser control instruction according to target parameters and encoding the position instruction and the laser control instruction into digital signals, wherein the digital signals comprise a servo planning position, the power, the frequency and a switching light instruction of a laser; in the case of slave station clock synchronization, a digital signal is transmitted to each slave station via a communication bus, the slave station is made to perform instruction synchronization in a communication cycle, and the slave station includes a laser and a servo driver. The application uses the industrial communication bus, utilizes digital communication and clock synchronization, ensures the accurate coincidence of the motion trail and the laser action point, realizes the accurate synchronization of motion control and laser control, and simultaneously greatly improves the efficiency and quality of laser flight processing. The application has simple wiring, can reduce the use of hardware circuits in the laser processing equipment and reduce the production, installation, debugging, maintenance and other costs of the equipment.

Inventors

  • JIANG FENG
  • YANG QINGFENG
  • ZHOU ZHIQIANG
  • GONG JIANGANG

Assignees

  • 深圳市创鑫激光股份有限公司

Dates

Publication Date
20260508
Application Date
20251226

Claims (10)

  1. 1. A laser flying machining control method applied to a bus machining control system communicating with a slave station through a communication bus, the laser flying machining control method comprising: Generating a position instruction and a laser control instruction according to target parameters, and encoding the position instruction and the laser control instruction into digital signals, wherein the target parameters comprise a preset motion path and laser parameters, and the digital signals comprise a servo planning position, the power, the frequency and a switching light instruction of a laser; in the case of slave station clock synchronization, the digital signals are transmitted via a communication bus to the slave stations, which are synchronized in order to carry out the command in the communication cycle, wherein the slave stations comprise a servo drive, a laser and a processing head.
  2. 2. The laser fly-by-process control method according to claim 1, wherein before generating the position command and the laser control command and encoding into the digital signal, the laser fly-by-process control method further comprises: in the current communication period, calculating the actual distance between the current servo feedback position and the position to be triggered, wherein the position to be triggered is the next position to be turned on or the next position to be turned off in the processing path, If the actual distance is smaller than the preset distance, calculating a trigger time stamp of the position to be triggered according to the actual distance, wherein the trigger time stamp is an on-light time stamp or an off-light time stamp; The target parameter and the digital signal both comprise the trigger time stamp; Said transmitting said digital signal over a communication bus to each of the secondary stations for command synchronization by the secondary stations during a communication cycle, comprising: And transmitting the digital signals to each slave station through a communication bus to perform instruction synchronization in a communication period, so that the servo motor drives the processing head to reach the position to be triggered at the trigger time stamp, and simultaneously, the laser synchronously performs laser operation at the trigger time stamp, wherein the laser operation comprises a light-on operation or a light-off operation.
  3. 3. The laser flight control method according to claim 2, wherein if the actual distance is smaller than a preset distance, calculating a trigger time stamp of the position to be triggered according to the actual distance includes: if the actual distance is smaller than twice of the product of the running speed and the communication period, calculating a trigger time stamp of the position to be triggered in the target communication period according to the actual distance and the running speed, wherein the servo motor can drive the processing head to reach the position to be triggered in the target communication period.
  4. 4. A laser fly processing control method as claimed in claim 3, wherein the trigger time stamp is calculated by the following formula 1: Timestamp = D/V-T equation 1 Wherein, timestamp is the trigger Timestamp in the target communication period, D is the actual distance, and V is the running speed.
  5. 5. The laser flying machining control method according to any one of claims 2 to 4, characterized in that the laser flying machining control method further comprises: And if the actual distance is not smaller than the preset distance, the step of taking the next communication period as the current communication period and calculating the actual distance between the current servo feedback position and the position to be triggered in the current communication period is circularly executed until the actual distance is smaller than the preset distance.
  6. 6. The laser fly-processing control method according to any one of claims 2 to 4, characterized in that before transmitting the digital signal to each slave station, the laser fly-processing control method further comprises: And performing clock alignment synchronization on a master station and a slave station, wherein the master station comprises the bus processing control system.
  7. 7. The laser flying machining control method according to any one of claims 1 to 4, characterized in that the laser flying machining control method further comprises: Monitoring the communication state of a communication bus and/or the working state of a slave station; And if the abnormality is detected, early warning is carried out.
  8. 8. The laser flight processing control method according to any one of claims 2 to 4, wherein the communication bus is an Ethercat bus, or a Profinet bus; and/or the number of the groups of groups, The actual distance is the linear distance between the current servo feedback position and the position to be triggered or the path distance along the running direction.
  9. 9. A laser processing system for performing laser processing control by the laser flight processing control method according to any one of claims 1 to 8.
  10. 10. A laser processing apparatus, characterized in that the laser processing apparatus comprises the laser processing system of claim 9.

Description

Laser flight processing control method, laser processing system and laser processing equipment Technical Field The application relates to the field of laser processing control, in particular to a laser flight processing control method, a laser processing system and laser processing equipment. Background In the technical field of laser processing control, the existing laser flight processing control (such as flight cutting control and the like) technology mostly adopts a traditional IO signal control mode. The control system is connected with the laser by means of a complex hardware circuit, and PWM and laser power are sent through IO and analog quantity signals, so that the control of the laser power and frequency is realized. The traditional IO and analog quantity control mode depends on hardware circuits, so that the internal circuit layout of the equipment is complex, the volume and weight of the equipment are increased, and a plurality of difficulties are caused in the installation, debugging and maintenance processes of the equipment. The reliability of the line connection and the electromagnetic interference may cause signal abnormality, thereby affecting the cutting quality. In addition, because the hardware signal transmission and the laser signal sampling can both have certain signal distortion and delay, the problems of processing precision reduction, rough cutting surface and the like caused by signal transmission delay or loss in the processing process are more remarkable, and particularly, the problems of cutting non-closure, over-cutting and the like are more remarkable under the conditions of high-speed fly cutting and the like. Therefore, the traditional IO control technology architecture is relatively lagged, and cannot meet the market demands of technology iteration and laser high-speed high-precision machining. Disclosure of Invention The application mainly aims to solve the problems that IO control wiring is complex and easy to interfere, and processing precision is affected due to signal distortion and delay in the prior art. The first aspect of the present application provides a laser flight processing control method applied to a bus processing control system communicating with a slave station through a communication bus, the laser flight processing control method comprising: Generating a position instruction and a laser control instruction according to target parameters, and encoding the position instruction and the laser control instruction into digital signals, wherein the target parameters comprise a preset motion path and laser parameters, and the digital signals comprise a servo planning position, the power, the frequency and a switching light instruction of a laser; In the case of slave station clock synchronization, a digital signal is transmitted via a communication bus to each slave station, which is made to perform command synchronization in a communication cycle, wherein the slave station includes a laser and a servo driver. Optionally, in a first implementation manner of the first aspect of the present application, before generating the position command and the laser control command and encoding them into the digital signal, the laser flight processing control method further includes: in the current communication period, calculating the actual distance between the current servo feedback position and the position to be triggered, wherein the position to be triggered is the next position to be turned on or the next position to be turned off in the processing path, If the actual distance is smaller than the preset distance, calculating a trigger time stamp of the position to be triggered according to the actual distance, wherein the trigger time stamp is an on-light time stamp or an off-light time stamp; The target parameter and the digital signal both comprise the trigger time stamp; Said transmitting said digital signal over a communication bus to each of the secondary stations for command synchronization by the secondary stations during a communication cycle, comprising: And transmitting the digital signals to each slave station through a communication bus to perform instruction synchronization in a communication period, so that the servo motor drives the processing head to reach the position to be triggered at the trigger time stamp, and simultaneously, the laser synchronously performs laser operation at the trigger time stamp, wherein the laser operation comprises a light-on operation or a light-off operation. Optionally, in a second implementation manner of the first aspect of the present application, if the actual distance is smaller than a preset distance, calculating, according to the actual distance, a trigger timestamp of the position to be triggered includes: if the actual distance is smaller than twice of the product of the running speed and the communication period, calculating a trigger time stamp of the position to be triggered in the target communication peri