Water-jet guided laser cutting energy uniform distribution control method

Abstract

The invention discloses a water-jet-guided laser cutting energy uniform distribution control method, and relates to the technical field of laser cutting, the water-jet-guided laser cutting energy uniform distribution control method comprises a cutting point scanning thread and a tool bit movement control thread, the cutting point scanning thread comprises the following steps: step 1, graph introduction and processing; step 2, setting specified parameters; step 3, scanning and judging; and 4, recording a data mechanism and updating a cutting point. Through cooperation of a cutting point scanning thread and a tool bit movement control thread, coordinated matching switch light control is carried out according to the diameter of a cutting laser point as a dispersion stepping amount and movement control, light switching is carried out once every time a movement mechanism moves by one stepping amount, and therefore materials can be cut according to discrete switch laser; as the diameter of the laser point is very small, the laser point is a smooth cutting surface from the macroscopic view, and cutting with uniform distribution of laser point energy is realized through coordination and matching of cutting motion control and laser switch control of equipment.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting, and in particular to a method for controlling uniform energy distribution of water-conducting laser cutting. Background Art

[0002] Laser cutting is a method of cutting workpieces by irradiating a focused high-power density laser beam to rapidly melt, vaporize or ignite the irradiated material, and at the same time, using a high-speed airflow coaxial with the beam to blow away the molten material, thereby cutting the workpiece. It is divided into four categories: laser vaporization cutting, laser melting cutting, laser oxygen cutting, and laser scribing and controlled fracture.

[0003] The existing technology has the following problems: In existing laser cutting applications, laser cutting of regular graphics and laser cutting control can basically meet the requirements. However, in complex path applications of special-shaped cutting, whether the laser point energy can be evenly distributed on the cutting path puts forward higher requirements on the coordinated matching of the equipment's cutting motion control and the laser switch control to achieve uniformly distributed cutting of the laser point energy. Therefore, a water-guided laser cutting energy uniform distribution control method is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a method for controlling uniform energy distribution of water-conducting laser cutting, wherein the cutting laser spot diameter is used as a discrete step amount to coordinate and match the switching light control with the motion control, and the motion mechanism switches the light once every time it moves a step amount, so that the material can be cut by discrete switching laser. Since the laser spot diameter is very small, from a macroscopic point of view, it is a smooth cutting surface, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A method for controlling uniform energy distribution of water-conducting laser cutting, comprising a cutting point scanning thread and a cutter head movement control thread, wherein the cutting point scanning thread comprises the following steps: Step 1: Graphics import and processing; Step 2: Set the specified parameters; Step 3: Scan and judge; Step 4: Record the data structure and update the cutting point; Step 5: Determine the cutting point.

[0006] A further improvement of the technical solution of the present invention is that the step 1, graphics import and processing, specifically includes the following steps: Import dxf graphics files; Preprocess the graphic files and set the cutting start point, end point, cutting path direction and sequence and other preprocessing operations.

[0007] A further improvement of the technical solution of the present invention is that the step 2 of setting the specified parameters specifically includes the following steps: For the preprocessed graphics, the laser spot diameter is set as the minimum moving distance of the laser spot; Then set the starting cutting point as the current cutting point.

[0008] A further improvement of the technical solution of the present invention is that the step 3, scanning and judging, specifically includes the following steps: Scan the next point one by one to see if the distance between the center of the current point is equal to the minimum moving distance. If not, return to the previous process to scan again. If yes, proceed to step 4.

[0009] A further improvement of the technical solution of the present invention is that the step 4, recording the data structure and updating the cutting point specifically includes the following steps: Record the scanned cutting point and enter the cutting point queue data structure, update the scanned cutting point as the current cutting point, and then enter the cutter head movement control thread.

[0010] A further improvement of the technical solution of the present invention is that the step 5 of determining the cutting point specifically includes the following steps: Determine whether the current cutting point is the end point. If so, end the process. If not, return to step 3 to scan again.

[0011] A further improvement of the technical solution of the present invention is that the tool head movement control thread specifically includes: real-time reading of the cutting point queue data to move the laser head for cutting, the tool head movement control thread and the record scanned cutting point enter the cutting point queue data mechanism, and update the scanned cutting point to be connected to the current cutting point.

[0012] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art: 1. The present invention provides a method for controlling uniform energy distribution in water-conducting laser cutting. The method uses the cooperation of the cutting point scanning thread and the cutter head movement control thread, and coordinates and matches the switch light control according to the cutting laser spot diameter as a discrete step amount and the motion control. The motion mechanism switches the light once every step amount, so that the material can be cut by discrete switch laser. Since the laser spot diameter is very small, it is a smooth cutting surface from a macroscopic perspective. The cutting motion control of the equipment and the laser switch control are coordinated and matched to achieve uniform energy distribution cutting of the laser spot.

[0013] 2. The present invention provides a method for controlling uniform energy distribution in water-conducting laser cutting. During the cutting process, for special-shaped cutting paths, the cutting points can be evenly distributed on the cutting path, avoiding repeated accumulation and discrete distribution of the cutting points, so as to achieve uniform and smooth texture on the cutting surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic flow chart of the control method of the present invention. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with embodiments: Example 1 like Figure 1 As shown, the present invention provides a method for controlling uniform energy distribution of water-conducting laser cutting, the method comprising a cutting point scanning thread and a cutter head movement control thread, the cutting point scanning thread comprising the following steps: Step 1: Graphics import and processing; Step 2: Set the specified parameters; Step 3: Scan and judge; Step 4: Record the data structure and update the cutting point; Step 5: Determine the cutting point.

[0016] Step 1: Graphics import and processing specifically includes the following steps: Import dxf graphics files; Preprocess the graphic files and set the cutting start point, end point, cutting path direction and sequence and other preprocessing operations.

[0017] Step 2, setting the specified parameters, specifically includes the following steps: For the preprocessed graphics, the laser spot diameter is set as the minimum moving distance of the laser spot; Then set the starting cutting point as the current cutting point.

[0018] Step 3, scanning and judging, specifically includes the following steps: Scan the next point one by one to see if the distance between the center of the current point is equal to the minimum moving distance. If not, return to the previous process to scan again. If yes, proceed to step 4.

[0019] Step 4, recording the data structure and updating the cutting point, specifically includes the following steps: Record the scanned cutting point and enter the cutting point queue data structure, update the scanned cutting point as the current cutting point, and then enter the cutter head movement control thread.

[0020] Step 5, determining the cutting point specifically includes the following steps: Determine whether the current cutting point is the end point. If so, end the process. If not, return to step 3 to scan again.

[0021] The tool head movement control thread specifically includes: reading the cutting point queue data in real time to move the laser head for cutting, the tool head movement control thread and recording the scanned cutting point into the cutting point queue data mechanism, and updating the scanned cutting point to be connected to the current cutting point.

[0022] In this embodiment, the cutting point scanning thread and the cutter head movement control thread are coordinated and matched with the motion control according to the cutting laser spot diameter as the discrete step amount. The light switch control is performed once every time the motion mechanism moves a step amount. In this way, the material can be cut by discrete switching laser. Since the laser spot diameter is very small, it is a smooth cutting surface from a macroscopic perspective. The cutting motion control of the equipment and the laser switch control are coordinated and matched to achieve cutting with uniform laser point energy distribution.

[0023] In addition, the overall working steps of the present invention are: First, import the dxf graphic file, pre-process the graphic file, set the cutting start point, end point, cutting path direction and sequence and other pre-processing operations; Then, for the preprocessed graphics, the laser point diameter is set as the minimum moving distance of the laser point, and the starting cutting point is set as the current cutting point; Then scan the next point one by one to see if the distance between the center of the current point is equal to the minimum moving distance. If not, return to the previous process to scan again. If they are, record the scanned cutting point into the cutting point queue data mechanism, and update the scanned cutting point as the current cutting point. Then enter the cutter head movement control thread, read the cutting point queue data in real time, and move the laser head for cutting. Finally, determine whether the current cutting point is the end point. If so, end the process. If not, return to scan again.

[0024] In summary, the present invention achieves the following effects through the above method: utilizing the cooperation of the cutting point scanning thread and the cutter head movement control thread, coordinating and matching the switch light control according to the cutting laser spot diameter as the discrete step amount and the motion control, the motion mechanism switches the light on and off once each time it moves a step amount, so that the material can be cut by discrete switch laser. Since the laser spot diameter is very small, from a macroscopic point of view, it is a smooth cutting surface. The cutting motion control of the equipment and the laser switch control are coordinated and matched to achieve uniformly distributed cutting of the laser point energy. During the cutting process, for special-shaped cutting paths, the cutting points can be evenly distributed on the cutting path to avoid accumulation, duplication and discrete distribution of cutting points, so as to achieve uniform and smooth texture of the cutting surface.

[0025] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A method for controlling uniform energy distribution in water-conducting laser cutting, characterized in that: The water-guided laser cutting energy uniform distribution control method includes a cutting point scanning thread and a cutter head movement control thread, wherein the cutting point scanning thread includes the following steps: Step 1: Graphics import and processing; Step 2: Set the specified parameters; Step 3: Scan and judge; Step 4: Record the data structure and update the cutting point; Step 5: Determine the cutting point.

2. A method for controlling uniform energy distribution in water-conducting laser cutting according to claim 1, characterized in that: The step 1, graphics import and processing, specifically includes the following steps: Import dxf graphics files; Preprocess the graphic files and set the cutting start point, end point, cutting path direction and sequence and other preprocessing operations.

3. The method for controlling uniform energy distribution of water-conducting laser cutting according to claim 2, characterized in that: The step 2, setting the specified parameters specifically includes the following steps: For the preprocessed graphics, the laser spot diameter is set as the minimum moving distance of the laser spot; Then set the starting cutting point as the current cutting point.

4. The method for controlling uniform energy distribution in water-conducting laser cutting according to claim 3, characterized in that: The step 3, scanning and judging, specifically includes the following steps: Scan the next point one by one to see if the distance between the center of the current point is equal to the minimum moving distance. If not, return to the previous process to scan again. If yes, proceed to step 4.

5. A method for controlling uniform energy distribution in water-conducting laser cutting according to claim 4, characterized in that: The step 4, recording the data structure and updating the cutting point specifically includes the following steps: Record the scanned cutting point and enter the cutting point queue data structure, update the scanned cutting point as the current cutting point, and then enter the cutter head movement control thread.

6. A method for controlling uniform energy distribution in water-conducting laser cutting according to claim 5, characterized in that: The step 5, determining the cutting point specifically comprises the following steps: Determine whether the current cutting point is the end point. If so, end the process. If not, return to step 3 to scan again.

7. The method for controlling uniform energy distribution in water-conducting laser cutting according to claim 5, characterized in that: The tool head movement control thread specifically includes: reading the cutting point queue data in real time to move the laser head for cutting, the tool head movement control thread and recording the scanned cutting point into the cutting point queue data mechanism, and updating the scanned cutting point to be connected to the current cutting point.

Images