A corner cutting method, device, and medium for a laser tube cutting machine

Abstract

The application discloses a corner cutting method, device and medium of a laser pipe cutting machine, and the method comprises the following steps: obtaining pipe parameters of a pipe to be cut, generating a cutting track of the pipe to be cut according to the pipe parameters, determining an out-corner point and an in-corner point corresponding to each corner of the pipe to be cut in the cutting track, determining a corner radius and a corner buffer zone corresponding to the corner according to the out-corner point and the in-corner point, judging whether a cutting focal point corresponding to a cutting head reaches the corner or the corner buffer zone in the process of plane cutting, if yes, determining corner cutting process parameters corresponding to the cutting head at the corner and corner buffer zone cutting process parameters corresponding to the corner buffer zone according to plane cutting parameters corresponding to the plane cutting, so that light cutting of the pipe to be cut is performed according to the corner cutting process parameters when the corner is reached, or light cutting of the pipe to be cut is performed according to the corner buffer zone cutting process parameters when the corner buffer zone is reached.

Description

Technical Field

[0001] This application relates to the field of laser cutting technology, specifically to a method, equipment, and medium for corner cutting using a laser tube cutting machine. Background Technology

[0002] With the upgrading of laser tube cutting machines and the continuous improvement of cutting technology, laser tube cutting machines can process an increasing number of tube types. Besides conventional round tubes, they can also process rectangular tubes, angle steel, channel steel, and other tubes. However, during the processing of these tubes or profiles with corners, issues arise at the corners, including shaky lines, misalignment between the corner and the flat surface, incomplete cuts, overheating, reduced follow-up height of the cutting head, and even collisions between the cutting head nozzle and the tube. This is because the thickness and follow-up height of the tube change constantly during corner cutting. Therefore, when cutting tubes at corners, the cutting process parameters need to be adjusted to ensure the stability of the cut at the corners.

[0003] The commonly used method is to pre-set the corner cutting process by changing parameters such as cutting speed, power, focus, and follow-up height to prevent situations such as incomplete cuts, poor cuts, and collisions between the cutting head and the pipe. However, different pipes vary in quality and thickness, and the angle and size of the corners are also different. Therefore, a certain amount of testing is required when cutting different pipes to obtain better cutting process parameters, which reduces the overall cutting efficiency and also wastes some pipe material during the testing process. Summary of the Invention

[0004] To address the aforementioned problems, this application proposes a corner cutting method for a laser tube cutter, comprising:

[0005] Obtain the pipe parameters of the pipe to be cut, and generate the cutting trajectory of the pipe to be cut based on the pipe parameters; the pipe parameters include at least the pipe type and plane thickness of the pipe to be cut.

[0006] Determine the exit corner point and the entry corner point corresponding to each corner of the pipe to be cut in the cutting trajectory, and determine the corner radius and corner buffer zone corresponding to the corner based on the exit corner point and the entry corner point;

[0007] The cutting head is controlled to perform planar cutting on the pipe to be cut, which is rotating along the cutting trajectory, and during the planar cutting process, it is determined whether the cutting focus corresponding to the cutting head reaches the corner or the corner buffer zone.

[0008] If so, based on the plane cutting parameters corresponding to the plane cutting, determine the corner cutting process parameters corresponding to the corner at the corner and the corner buffer cutting process parameters corresponding to the corner buffer, so that when reaching the corner, the tube to be cut is cut by light emission according to the corner cutting process parameters, or when reaching the corner buffer, the tube to be cut is cut by light emission according to the corner buffer cutting process parameters.

[0009] In one implementation of this application, determining the exit and entry corner points corresponding to each corner of the pipe to be cut in the cutting trajectory specifically includes:

[0010] For each cutting trajectory point in the cutting trajectory, determine the first coordinate value and the second coordinate value corresponding to the previous trajectory point and the next trajectory point, respectively, as well as the coordinate value corresponding to the cutting trajectory point; the horizontal coordinate of the coordinate value, the first coordinate value, and the second coordinate value represents the Y-axis coordinate, the vertical coordinate represents the Z-axis coordinate, and the vertical axis represents the rotation angle;

[0011] The coordinate values ​​are compared with the first coordinate value and the second coordinate value respectively to determine whether the coordinate values ​​are consistent with the first coordinate value and the second coordinate value, so as to determine the exit corner point and the entry corner point corresponding to each corner of the pipe to be cut.

[0012] In one implementation of this application, determining whether the coordinate values ​​are consistent with the first coordinate values ​​and the second coordinate values, in order to determine the exit corner point and the entry corner point corresponding to each corner of the pipe to be cut, specifically includes:

[0013] If the ordinate and vertical coordinate of the cutting trajectory point are the same as the ordinate and vertical coordinate of the previous trajectory point, but different from the ordinate and vertical coordinate of the subsequent trajectory point, then the cutting trajectory point is determined to be the entry point of the corner.

[0014] If the ordinate and vertical coordinate of the cutting trajectory point are the same as the ordinate and vertical coordinate of the subsequent trajectory point, but different from the ordinate and vertical coordinate of the preceding trajectory point, then the cutting trajectory point is determined to be the exit point of the corner.

[0015] In one implementation of this application, determining the corner radius and corner buffer zone corresponding to the corner based on the exit corner point and the entry corner point specifically includes:

[0016] The first exit corner point and the first entry corner point of the cutting trajectory are determined on the first plane, and the second exit corner point is determined on the second plane; wherein the plane containing the second plane is the plane after the first plane has been rotated by a specified angle along the positive rotation direction of the pipe to be cut;

[0017] Determine the center point of the pipe to be cut, and the plane coordinates corresponding to the center point, the first exit corner point, the first entry corner point, and the second exit corner point respectively; the horizontal coordinate of the plane coordinates represents the Y-axis coordinate, and the vertical coordinate represents the Z-axis coordinate;

[0018] Calculate the corner radius corresponding to the corner based on the difference in x-coordinate between the first exit corner point and the first entry corner point, and the difference in y-coordinate between the second exit corner point and the center point:

[0019] Along the positive rotation direction of the pipe to be cut, the corner buffer zone corresponding to the corner is determined based on the entry corner point, the corner radius, and the plane thickness.

[0020] In one implementation of this application, before determining whether the cutting focus corresponding to the cutting head has reached the corner or the corner buffer zone during the planar cutting process, the method further includes:

[0021] Confirm whether the CNC system can generate the corner cutting process parameters corresponding to the corner and the corner buffer cutting process parameters corresponding to the corner buffer based on the plane cutting parameters.

[0022] If not, then the preset corner process cutting parameters are obtained, and during the plane cutting process, it is determined whether the cutting focus corresponding to the cutting head reaches the corner, so that when the corner is reached, the tube to be cut is cut by light output through the preset corner process cutting parameters.

[0023] In one implementation of this application, the corner cutting process parameters and the corner buffer zone cutting process parameters include at least cutting power, follow-up height, cutting speed, and cutting focus.

[0024] In one implementation of this application, the corner cutting process parameters of the cutting head at the corner are determined based on the plane cutting parameters corresponding to the plane cutting, specifically including:

[0025] The corner cutting power of the cutting head at the corner is calculated using the following formula:

[0026]

[0027] Among them, P B P is the corner cutting power. p R1 is the planar cutting power of the cutting head, and R1 is the first correction factor.

[0028] Based on the plane following height corresponding to the plane cutting, calculate the arctangent value of the plane following height, and determine the corner following height of the cutting head at the corner based on the arctangent value and the plane following height;

[0029] Determine the plane cutting speed and plane cutting focus corresponding to the plane cutting, and calculate the corner cutting speed and corner cutting focus of the cutting head at the corner based on the plane cutting speed and plane cutting focus.

[0030] In one implementation of this application, the corner buffer cutting process parameters corresponding to the corner buffer are determined based on the plane cutting parameters corresponding to the plane cutting, specifically including:

[0031] The corner buffer cutting process parameters of the cutting head in the corner buffer zone are calculated using the following formula:

[0032]

[0033] Among them, P e P is the cutting power of the corner buffer zone. p R2 is the planar cutting power of the cutting head, D is the pipe thickness, r is the corner radius, R2 is the second correction coefficient, K is a preset variable, and 0≤K≤r;

[0034] The plane height corresponding to the plane cutting is used as the corner buffer height corresponding to the corner buffer.

[0035] Determine the plane cutting speed and plane cutting focus corresponding to the plane cutting, and calculate the corner cutting speed and corner cutting focus of the cutting head at the corner buffer based on the plane cutting speed and plane cutting focus.

[0036] This application provides a laser tube cutting machine corner cutting device, characterized in that it includes:

[0037] At least one processor; and,

[0038] A memory communicatively connected to the at least one processor; wherein,

[0039] The memory stores instructions that can be executed by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to:

[0040] Obtain the pipe parameters of the pipe to be cut, and generate the cutting trajectory of the pipe to be cut based on the pipe parameters; the pipe parameters include at least the pipe type and plane thickness of the pipe to be cut.

[0041] Determine the exit corner point and the entry corner point corresponding to each corner of the pipe to be cut in the cutting trajectory, and determine the corner radius and corner buffer zone corresponding to the corner based on the exit corner point and the entry corner point;

[0042] The cutting head is controlled to perform planar cutting on the pipe to be cut, which is rotating along the cutting trajectory, and during the planar cutting process, it is determined whether the cutting focus corresponding to the cutting head reaches the corner or the corner buffer zone.

[0043] If so, based on the planar cutting process parameters corresponding to the planar cutting, determine the corner cutting process parameters corresponding to the corner at the corner and the corner buffer cutting process parameters corresponding to the corner buffer, so that when reaching the corner, the tube to be cut is subjected to light-emitting cutting according to the corner cutting process parameters, or when reaching the corner buffer, the tube to be cut is subjected to light-emitting cutting according to the corner buffer cutting process parameters.

[0044] This application provides a non-volatile computer storage medium storing computer-executable instructions, characterized in that the computer-executable instructions are configured as follows:

[0045] Obtain the pipe parameters of the pipe to be cut, and generate the cutting trajectory of the pipe to be cut based on the pipe parameters; the pipe parameters include at least the pipe type and plane thickness of the pipe to be cut.

[0046] Determine the exit corner point and the entry corner point corresponding to each corner of the pipe to be cut in the cutting trajectory, and determine the corner radius and corner buffer zone corresponding to the corner based on the exit corner point and the entry corner point;

[0047] The cutting head is controlled to perform planar cutting on the pipe to be cut, which is rotating along the cutting trajectory, and during the planar cutting process, it is determined whether the cutting focus corresponding to the cutting head reaches the corner or the corner buffer zone.

[0048] If so, based on the planar process cutting parameters corresponding to the planar cutting, determine the corner cutting process parameters corresponding to the corner at the corner and the corner buffer cutting process parameters corresponding to the corner buffer, so that when reaching the corner, the tube to be cut is subjected to light-emitting cutting according to the corner cutting process parameters, or when reaching the corner buffer, the tube to be cut is subjected to light-emitting cutting according to the corner buffer cutting process parameters.

[0049] The corner cutting method for laser tube cutting machine proposed in this application can bring the following beneficial effects:

[0050] The cutting trajectory of the pipe to be cut is generated by the pipe parameters. When the cutting head moves along the cutting trajectory to the corner and the corner buffer zone, the laser cutting head is controlled to switch from the planar cutting process to the corresponding corner cutting process and corner buffer zone cutting process. This ensures that the cutting head can be adjusted to the appropriate cutting process parameters at the corner for light output cutting, avoiding cutting quality and safety problems due to the difference between the planar and the corner, meeting the cutting requirements and improving cutting efficiency. Attached Figure Description

[0051] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0052] Figure 1 A schematic flowchart illustrating a corner cutting method using a laser tube cutter provided in this application embodiment;

[0053] Figure 2 This application provides a schematic diagram of a pipe corner cutting method as an embodiment.

[0054] Figure 3 This application provides a schematic diagram of pipe location markings as an embodiment.

[0055] Figure 4 A schematic diagram of a corner and a corner buffer zone provided in an embodiment of this application;

[0056] Figure 5 Another schematic diagram of a corner and corner buffer zone provided in this application embodiment

[0057] Figure 6 A schematic flowchart of another laser tube cutting machine corner cutting method provided in an embodiment of this application;

[0058] Figure 7 This is a schematic diagram of the structure of a laser tube cutting machine corner cutting device provided in an embodiment of this application. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0060] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0061] like Figure 1 As shown in the embodiment of this application, a corner cutting method for a laser tube cutting machine includes:

[0062] S101: Obtain the pipe parameters of the pipe to be cut, and generate the cutting trajectory of the pipe to be cut based on the pipe parameters; the pipe parameters include at least the pipe type and plane thickness of the pipe to be cut.

[0063] The shape of the pipe to be cut is not limited; it can be a regular pipe such as a rectangular pipe or a triangular pipe, or an irregular pipe with corners. This application uses a rectangular pipe as an example. The pipe parameters include at least the pipe type and the planar thickness. It should be noted that the planar thickness refers to the thickness of the pipe at the non-corner locations. In addition, the pipe parameters also include the maximum thickness at the corners of the pipe to be cut.

[0064] Before performing laser cutting on the pipe, the CNC system needs to obtain its pipe parameters, and then generate the cutting trajectory and corresponding cutting code based on the pipe parameters. Each type of pipe corresponds to one cutting code.

[0065] S102: Determine the exit and entry points of each corner of the pipe to be cut in the cutting trajectory, and determine the corner radius and corner buffer zone based on the exit and entry points.

[0066] The cutting trajectory is used to characterize the cutting path of the laser tube cutter, and includes several cutting trajectory points. For each corner of the tube to be cut, the exit point and the entry point of each corner need to be selected from the above-mentioned cutting trajectory points to determine the specific position of the corner. This allows for timely correction of the cutting process parameters when entering and exiting the corner, ensuring the cutting effect at the corner. It should be noted that the exit point is the point that leaves the corner in the positive direction of rotation of the tube to be cut, and the entry point is the point that enters the corner in the positive direction of rotation of the tube to be cut. The exit point and the entry point serve as the end point and the beginning point of the corner, respectively, which can further determine the position of the corner.

[0067] Specifically, regarding the cutting trajectory point P in the cutting trajectory... n Determine the previous trajectory point P of the cutting trajectory point. n-1 and the next trajectory point P n+1 The corresponding first coordinate values ​​P n-1 (Y n-1 Z n-1 A n-1 ) and second coordinate value P n+1 (Y n+1 Z n+1 A n+1 ), and the coordinate value P corresponding to the cutting trajectory point.n (Y n Z n A n Since the cutting trajectory of the pipe to be cut is based on a planar trajectory generated from the left side of the pipe, such as... Figure 2 As shown, the horizontal coordinate of the coordinate values, the first coordinate value, and the second coordinate value represents the Y-axis coordinate, the vertical coordinate represents the Z-axis coordinate, and the vertical axis represents the rotation angle. The clockwise direction is the positive rotation direction of the pipe to be cut.

[0068] Furthermore, P n The corresponding coordinate values ​​are compared with the first and second coordinate values ​​to determine whether the coordinate values ​​are consistent with the first and second coordinate values, so as to determine the exit and entry corner points of each corner of the pipe to be cut.

[0069] If the ordinate and vertical coordinate of a cutting trajectory point are the same as the ordinate and vertical coordinate of the previous trajectory point, but different from the ordinate and vertical coordinate of the corresponding subsequent trajectory point, that is, when Z... n =Z n-1 ≠Z n+1 And A n =A n-1 ≠A n+1 When the rotational speed of the pipe to be cut is not 0, and the cutting trajectory point is on the same plane as the previous trajectory point, the cutting trajectory point should be used as the entry point of the corner.

[0070] If the ordinate and vertical coordinate of a point on the cutting trajectory are the same as the ordinate and vertical coordinate of a subsequent point on the trajectory, but different from the ordinate and vertical coordinate of a point on the previous trajectory, that is, when Z... n =Z n+1 ≠Z n-1 And A n =A n+1 ≠A n-1 When the cutting trajectory point and the next trajectory point are on the same plane, and the rotational speed of the pipe to be cut is not 0, the cutting trajectory point should be used as the exit point of the corner.

[0071] The entry and exit corner points, serving as the start and end points of the corner respectively, allow for further determination of the corner radius of the pipe to be cut. First, the first exit and first entry corner points on the first plane, and the second exit corner point on the second plane, are determined; where the second plane is the plane formed by rotating the first plane by a specified angle along the positive direction of rotation of the pipe to be cut. For example... Figure 3As shown, P1 and P3 are the exit corner points, and P2 is the entry corner point. Specifically, P1 and P3 are the first exit corner point and the first entry corner point on the first plane, respectively, and P2 is the second exit corner point on the second plane. The first plane refers to the plane containing P1 and P3, while the second plane refers to the plane after rotating the first plane by a specified angle (90°) along the positive rotation direction of the pipe to be cut. Then, the center point of the pipe to be cut, as well as the corresponding plane coordinates of the center point, the first exit corner point, the first entry corner point, and the second exit corner point, are determined. The horizontal coordinate represents the Y-axis coordinate, and the vertical coordinate represents the Z-axis coordinate. That is, the center point P4 (Y4, Z4), the first exit corner point P1 (Y1, Z1), the first entry corner point P2 (Y2, Z2), and the second exit corner point P3 (Y3, Z3). Next, based on the above four points, determine the difference in x-coordinates between the first exit point and the first entry point, and the difference in y-coordinates between the second exit point and the center point. The corner radius corresponding to the corner is then calculated using the following formula:

[0072]

[0073] Where Y1 and Y2 represent the x-coordinates of the first exit corner point and the first entry corner point, respectively; Z3 and Z4 represent the y-coordinates of the second exit corner point and the center point, respectively; and r represents the corner radius.

[0074] Thus, the corner radius has been obtained through the above steps. From the corner radius, the entry point, and the exit point, the corresponding corner can be determined. For example... Figure 4 and Figure 5 As shown, different corner radii determine different corner positions. For a single corner, the cutting thickness is the same at all positions during laser tube cutting. Therefore, the cutting process required for corner cutting in this embodiment is fixed. However, during the process of the cutting head moving from the plane to the corner, it needs to pass through a region of uneven thickness. Within this region, the cutting thickness of the tube changes constantly, and the required cutting process will differ from that of plane cutting and corner cutting. Therefore, a corner buffer zone needs to be determined before the corner to compensate for and correct the process parameters used in plane cutting, thereby adopting an appropriate cutting process for different cutting thicknesses and follow-up heights to maximize cutting efficiency and effect. The determination of the corner buffer zone depends on the corner entry point, corner radius r, and plane thickness D, such as... Figure 3 It can be seen that, along the positive rotation direction of the pipe to be cut, the point with the longest distance from the entry corner point to the plane thickness is taken as the starting point of the corner buffer zone, i.e., P5. At this time, Y5 = Y2 - D. The entry corner point is taken as the ending point of the corner buffer zone, and combined with... Figure 4 and Figure 5As can be seen, the size of the corner buffer zone is determined by the area where the corner is located, thus the corner buffer zone of that corner can be determined.

[0075] S103: Control the cutting head to perform planar cutting on the pipe to be cut, which is rotating along the cutting trajectory, and determine whether the cutting focus corresponding to the cutting head has reached the corner or corner buffer zone during the planar cutting process.

[0076] During the pipe cutting process, the pipe to be cut needs to be rotated to ensure that there are multiple cutting points, allowing for successful cutting. When laser pipe cutting machines perform beam cutting on pipes, planar cutting is typically used for the flat portions of the pipe that are not at corners. However, at corners, where the pipe thickness and other factors can change at any time, continuing to use planar cutting can easily lead to cutting quality and safety issues.

[0077] Therefore, the CNC system can control the cutting head to perform planar cutting on the pipe to be cut, which rotates along the cutting trajectory. During the planar cutting process, it is necessary to determine whether the cutting focus corresponding to the cutting head has reached the corner or corner buffer zone, so as to ensure that the cutting head can switch the cutting process in time at the corner or corner buffer zone.

[0078] S104: If so, based on the plane cutting parameters corresponding to the plane cutting, determine the corner cutting process parameters corresponding to the corner at the corner and the corner buffer cutting process parameters corresponding to the corner buffer, so that when reaching the corner, the tube to be cut is cut with light according to the corner cutting process parameters, or when reaching the corner buffer, the tube to be cut is cut with light according to the corner buffer cutting process parameters.

[0079] If the cutting head reaches a corner or corner buffer zone, the corner cutting process parameters at the corner and the corner buffer zone must be generated in real time based on the planar cutting process parameters. This allows for beam cutting of the pipe at the corner or corner buffer zone, based on the corner cutting process parameters. The corner cutting process parameters and the corner buffer zone cutting process parameters include at least cutting power, follow-up height, cutting speed, and cutting focus.

[0080] It should be noted that the above process is performed on the basis of the CNC system enabling real-time corner generation. However, if the CNC system cannot generate corner cutting or corner buffer cutting processes in real time during the light-emitting cutting process, this embodiment can preset corner cutting process parameters, such as cutting power, follow-up height, cutting speed, and cutting focus at the corner. In this way, it is only necessary to detect in real time whether the cutting focus corresponding to the current cutting head has reached the corner during the planar cutting process. If the corner is reached, a corner cutting process command is inserted, and the preset corner cutting process parameters are used to perform light-emitting cutting on the tube to be cut. After the cutting focus of the cutting head leaves the corner, a planar cutting process command is inserted, and the planar cutting process parameters are used to continue planar cutting.

[0081] The specific process is as follows: Figure 6 As shown, when performing laser cutting on the pipe to be cut, it is first necessary to determine whether the current CNC system has enabled the function of generating corner cutting processes based on planar cutting processes. If not, the preset corner cutting process must be used when the cutting head enters the corner, and the planar cutting process must be continued when exiting the corner. If this function is enabled, corner buffer cutting process parameters must be generated based on the planar cutting process parameters, and it must be determined in real time whether the cutting head has reached the corner buffer. If it has, laser cutting on the pipe to be cut must be performed according to the generated corner buffer cutting process parameters. During this cutting process, it is determined whether the cutting head has reached the corner. If it has, laser cutting on the pipe to be cut is performed according to the generated corner cutting process parameters. When the cutting head leaves the corner, the planar cutting process parameters are used again to perform laser cutting on the remaining pipe until the pipe is completely cut.

[0082] In one embodiment, based on the planar cutting parameters corresponding to the planar cutting, the corner cutting process parameters at the corner and the corner buffer cutting process parameters at the corner buffer are determined. This can be achieved in the following way:

[0083] (1) Cutting power:

[0084] At the corner, the thickness of the pipe does not change. The corner cutting power of the cutting head at the corner can be calculated using the following formula:

[0085]

[0086] Among them, P B For corner cutting power, P p R1 is the planar cutting power of the cutting head, and R1 is the first correction factor.

[0087] In the corner buffer zone, the pipe thickness changes with the cutting thickness. The cutting power of the cutting head in the corner buffer zone can be calculated using the following formula:

[0088]

[0089] Among them, P c For the corner buffer cutting power, P p R1 is the planar cutting power of the cutting head, D is the pipe thickness, r is the corner radius, R2 is the second correction coefficient, and K is a preset variable, where 0 ≤ K ≤ r. K is related to pipe parameters such as pipe material, pipe size, pipe thickness, and pipe quality, and its specific value can be limited according to actual conditions.

[0090] (2) Follow-up height: In the corner buffer zone, the cutting head still cuts on the plane and the follow-up height does not change; while at the corner, the follow-up capacitor changes according to the area between the two electrode plates.

[0091] Therefore, the plane cutting can be corresponding to the plane follow-up height H. P The corner buffer's follow-up height H serves as the corner buffer zone. C .

[0092] As for the corner, its follow-up height is determined by H. P The decision can be made using the following formula:

[0093] H B =R3*H P *arctanH P +R4

[0094] Among them, H B R3 is the corner height at the corner, 0≤R3≤5; R4 is the fourth correction factor, 0≤R4≤10.

[0095] (3) Cutting speed: In order to obtain better cutting results, the cutting speed should also be varied according to the thickness of the pipe and the cutting power.

[0096] Corner cutting speed: V B =R5*V P

[0097] Corner buffer zone cutting speed:

[0098] Where V P R5 is the fifth correction factor, 0≤R5≤10; R6 is the sixth correction factor, 0.5≤R6≤2.

[0099] (4) Cutting focus: In order to obtain better cutting quality, the cutting focus is varied according to the pipe thickness and speed.

[0100] Corner cutting focus: F B =R7*F P

[0101] Corner buffer zone cutting focus:

[0102] Where F P R7 is the seventh correction factor, 0.5≤R7≤20; R8 is the eighth correction factor, 0≤R8≤5.

[0103] It should be noted that R1 to R8 are correction coefficients obtained after multiple cutting experiments by the laser tube cutting machine, and they are related to factors such as the external processing environment (e.g., temperature, humidity) and equipment aging.

[0104] The above are embodiments of the methods proposed in this application. Based on the same idea, some embodiments of this application also provide devices corresponding to the above methods.

[0105] Figure 7 This is a schematic diagram of a laser tube cutting machine corner cutting device provided as an embodiment of this application. Figure 7 As shown, it includes:

[0106] At least one processor; and,

[0107] A memory that is communicatively connected to at least one processor; wherein,

[0108] The memory stores instructions that can be executed by at least one processor, and the instructions, when executed by at least one processor, enable at least one processor to:

[0109] Obtain the pipe parameters of the pipe to be cut, and generate the cutting trajectory of the pipe to be cut based on the pipe parameters; the pipe parameters include at least the pipe type and plane thickness of the pipe to be cut.

[0110] Determine the exit corner point and the entry corner point corresponding to each corner of the pipe to be cut in the cutting trajectory, and determine the corner radius and corner buffer zone corresponding to the corner based on the exit corner point and the entry corner point;

[0111] The cutting head is controlled to perform planar cutting on the pipe to be cut, which is rotating along the cutting trajectory, and during the planar cutting process, it is determined whether the cutting focus corresponding to the cutting head reaches the corner or the corner buffer zone.

[0112] If so, based on the planar cutting process parameters corresponding to the planar cutting, determine the corner cutting process parameters corresponding to the corner at the corner and the corner buffer cutting process parameters corresponding to the corner buffer, so that when reaching the corner, the tube to be cut is subjected to light-emitting cutting according to the corner cutting process parameters, or when reaching the corner buffer, the tube to be cut is subjected to light-emitting cutting according to the corner buffer cutting process parameters.

[0113] This application provides a non-volatile computer storage medium storing computer-executable instructions, characterized in that the computer-executable instructions are configured as follows:

[0114] Obtain the pipe parameters of the pipe to be cut, and generate the cutting trajectory of the pipe to be cut based on the pipe parameters; the pipe parameters include at least the pipe type and plane thickness of the pipe to be cut.

[0115] Determine the exit corner point and the entry corner point corresponding to each corner of the pipe to be cut in the cutting trajectory, and determine the corner radius and corner buffer zone corresponding to the corner based on the exit corner point and the entry corner point;

[0116] The cutting head is controlled to perform planar cutting on the pipe to be cut, which is rotating along the cutting trajectory, and during the planar cutting process, it is determined whether the cutting focus corresponding to the cutting head reaches the corner or the corner buffer zone.

[0117] If so, based on the planar process cutting parameters corresponding to the planar cutting, determine the corner cutting process parameters corresponding to the corner at the corner and the corner buffer cutting process parameters corresponding to the corner buffer, so that when reaching the corner, the tube to be cut is subjected to light-emitting cutting according to the corner cutting process parameters, or when reaching the corner buffer, the tube to be cut is subjected to light-emitting cutting according to the corner buffer cutting process parameters.

[0118] The various embodiments in this application are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the device and medium embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the description of the method embodiments.

[0119] The devices and media provided in this application are one-to-one with the methods. Therefore, the devices and media also have similar beneficial technical effects as their corresponding methods. Since the beneficial technical effects of the methods have been described in detail above, the beneficial technical effects of the devices and media will not be repeated here.

[0120] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0121] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0122] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0123] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0124] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0125] Memory may include non-persistent storage in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0126] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0127] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0128] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for corner cutting using a laser tube cutting machine, characterized in that, The method includes: Obtain the pipe parameters of the pipe to be cut, and generate the cutting trajectory of the pipe to be cut based on the pipe parameters; the pipe parameters include at least the pipe type and plane thickness of the pipe to be cut. Determine the exit corner point and the entry corner point corresponding to each corner of the pipe to be cut in the cutting trajectory, and determine the corner radius and corner buffer zone corresponding to the corner based on the exit corner point and the entry corner point; The cutting head is controlled to perform planar cutting on the pipe to be cut, which is rotating along the cutting trajectory, and during the planar cutting process, it is determined whether the cutting focus corresponding to the cutting head reaches the corner or the corner buffer zone. If so, based on the plane cutting parameters corresponding to the plane cutting, determine the corner cutting process parameters corresponding to the corner at the corner and the corner buffer cutting process parameters corresponding to the corner buffer, so that when reaching the corner, the tube to be cut is subjected to light-emitting cutting according to the corner cutting process parameters, or when reaching the corner buffer, the tube to be cut is subjected to light-emitting cutting according to the corner buffer cutting process parameters; Based on the exit corner point and the entry corner point, the corner radius and corner buffer zone corresponding to the corner are determined, specifically including: The first exit corner point and the first entry corner point of the cutting trajectory are determined on the first plane, and the second exit corner point is determined on the second plane; wherein the plane containing the second plane is the plane after the first plane has been rotated by a specified angle along the positive rotation direction of the pipe to be cut; Determine the center point of the pipe to be cut, and the plane coordinates corresponding to the center point, the first exit corner point, the first entry corner point, and the second exit corner point respectively; the horizontal coordinate of the plane coordinates represents the Y-axis coordinate, and the vertical coordinate represents the Z-axis coordinate; Calculate the corner radius corresponding to the corner based on the difference in x-coordinate between the first exit corner point and the first entry corner point, and the difference in y-coordinate between the second exit corner point and the center point: Along the positive rotation direction of the pipe to be cut, the corner buffer zone corresponding to the corner is determined based on the entry corner point, the corner radius, and the plane thickness.

2. The laser tube cutting machine corner cutting method according to claim 1, characterized in that, Determining the exit and entry corner points corresponding to each corner of the pipe to be cut in the cutting trajectory specifically includes: For each cutting trajectory point in the cutting trajectory, determine the first coordinate value and the second coordinate value corresponding to the previous trajectory point and the next trajectory point, respectively, as well as the coordinate value corresponding to the cutting trajectory point; the horizontal coordinate of the coordinate value, the first coordinate value, and the second coordinate value represents the Y-axis coordinate, the vertical coordinate represents the Z-axis coordinate, and the vertical axis represents the rotation angle; The coordinate values ​​are compared with the first coordinate value and the second coordinate value respectively to determine whether the coordinate values ​​are consistent with the first coordinate value and the second coordinate value, so as to determine the exit corner point and the entry corner point corresponding to each corner of the pipe to be cut.

3. The laser tube cutting machine corner cutting method according to claim 2, characterized in that, Determining whether the coordinate values ​​are consistent with the first and second coordinate values ​​is used to determine the exit and entry corner points corresponding to each corner of the pipe to be cut, specifically including: If the ordinate and vertical coordinate of the cutting trajectory point are the same as the ordinate and vertical coordinate of the previous trajectory point, but different from the ordinate and vertical coordinate of the subsequent trajectory point, then the cutting trajectory point is determined to be the entry point of the corner. If the ordinate and vertical coordinate of the cutting trajectory point are the same as the ordinate and vertical coordinate of the subsequent trajectory point, but different from the ordinate and vertical coordinate of the preceding trajectory point, then the cutting trajectory point is determined to be the exit point of the corner.

4. The corner cutting method of a laser tube cutting machine according to claim 1, characterized in that, During the planar cutting process, before determining whether the cutting focus corresponding to the cutting head has reached the corner or the corner buffer zone, the method further includes: Confirm whether the CNC system can generate the corner cutting process parameters corresponding to the corner and the corner buffer cutting process parameters corresponding to the corner buffer based on the plane cutting parameters. If not, then the preset corner process cutting parameters are obtained, and during the plane cutting process, it is determined whether the cutting focus corresponding to the cutting head reaches the corner, so that when the corner is reached, the tube to be cut is cut by light output through the preset corner process cutting parameters.

5. A laser tube cutting machine corner cutting method according to claim 1, characterized in that, The planar cutting parameters, the corner cutting process parameters, and the corner buffer zone cutting process parameters include at least cutting power, follow-up height, cutting speed, and cutting focus.

6. The corner cutting method of a laser tube cutting machine according to claim 1, characterized in that, Based on the plane cutting parameters corresponding to the plane cutting, the corner cutting process parameters of the cutting head at the corner are determined, specifically including: The corner cutting power of the cutting head at the corner is calculated using the following formula: 1 in, The corner cutting power, This refers to the planar cutting power of the cutting head. 1 is the first correction factor; Based on the plane following height corresponding to the plane cutting, calculate the arctangent value of the plane following height, and determine the corner following height of the cutting head at the corner based on the arctangent value and the plane following height; Determine the plane cutting speed and plane cutting focus corresponding to the plane cutting, and calculate the corner cutting speed and corner cutting focus of the cutting head at the corner based on the plane cutting speed and plane cutting focus.

7. The laser tube cutting machine corner cutting method according to claim 1, characterized in that, Based on the plane cutting parameters corresponding to the plane cutting, the corner buffer cutting process parameters corresponding to the corner buffer are determined, specifically including: The corner buffer cutting process parameters of the cutting head in the corner buffer zone are calculated using the following formula: in, Cutting power for the corner buffer zone, Where is the planar cutting power of the cutting head, D is the pipe thickness, and r is the corner radius. The second correction coefficient is K, which is a preset variable. ; The plane height corresponding to the plane cutting is used as the corner buffer height corresponding to the corner buffer. Determine the plane cutting speed and plane cutting focus corresponding to the plane cutting, and calculate the corner cutting speed and corner cutting focus of the cutting head at the corner buffer based on the plane cutting speed and plane cutting focus.

8. A laser tube cutting machine corner cutting device, characterized in that, include: At least one processor; as well as, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, which, when executed by the at least one processor, enable the at least one processor to: Obtain the pipe parameters of the pipe to be cut, and generate the cutting trajectory of the pipe to be cut based on the pipe parameters; the pipe parameters include at least the pipe type and plane thickness of the pipe to be cut. Determine the exit corner point and the entry corner point corresponding to each corner of the pipe to be cut in the cutting trajectory, and determine the corner radius and corner buffer zone corresponding to the corner based on the exit corner point and the entry corner point; The cutting head is controlled to perform planar cutting on the pipe to be cut, which is rotating along the cutting trajectory, and during the planar cutting process, it is determined whether the cutting focus corresponding to the cutting head reaches the corner or the corner buffer zone. If so, based on the planar cutting process parameters corresponding to the planar cutting, determine the corner cutting process parameters corresponding to the corner at the corner and the corner buffer cutting process parameters corresponding to the corner buffer, so that when reaching the corner, the tube to be cut is subjected to light-emitting cutting according to the corner cutting process parameters, or when reaching the corner buffer, the tube to be cut is subjected to light-emitting cutting according to the corner buffer cutting process parameters; Based on the exit corner point and the entry corner point, the corner radius and corner buffer zone corresponding to the corner are determined, specifically including: The first exit corner point and the first entry corner point of the cutting trajectory are determined on the first plane, and the second exit corner point is determined on the second plane; wherein the plane containing the second plane is the plane after the first plane has been rotated by a specified angle along the positive rotation direction of the pipe to be cut; Determine the center point of the pipe to be cut, and the plane coordinates corresponding to the center point, the first exit corner point, the first entry corner point, and the second exit corner point respectively; the horizontal coordinate of the plane coordinates represents the Y-axis coordinate, and the vertical coordinate represents the Z-axis coordinate; Calculate the corner radius corresponding to the corner based on the difference in x-coordinate between the first exit corner point and the first entry corner point, and the difference in y-coordinate between the second exit corner point and the center point: Along the positive rotation direction of the pipe to be cut, the corner buffer zone corresponding to the corner is determined based on the entry corner point, the corner radius, and the plane thickness.

9. A non-volatile computer storage medium storing computer-executable instructions, characterized in that, The computer-executable instructions are set as follows: Obtain the pipe parameters of the pipe to be cut, and generate the cutting trajectory of the pipe to be cut based on the pipe parameters; the pipe parameters include at least the pipe type and plane thickness of the pipe to be cut. Determine the exit corner point and the entry corner point corresponding to each corner of the pipe to be cut in the cutting trajectory, and determine the corner radius and corner buffer zone corresponding to the corner based on the exit corner point and the entry corner point; The cutting head is controlled to perform planar cutting on the pipe to be cut, which is rotating along the cutting trajectory, and during the planar cutting process, it is determined whether the cutting focus corresponding to the cutting head reaches the corner or the corner buffer zone. If so, based on the planar process cutting parameters corresponding to the planar cutting, determine the corner cutting process parameters corresponding to the corner at the corner and the corner buffer cutting process parameters corresponding to the corner buffer, so that when reaching the corner, the tube to be cut is subjected to light-emitting cutting according to the corner cutting process parameters, or when reaching the corner buffer, the tube to be cut is subjected to light-emitting cutting according to the corner buffer cutting process parameters; Based on the exit corner point and the entry corner point, the corner radius and corner buffer zone corresponding to the corner are determined, specifically including: The first exit corner point and the first entry corner point of the cutting trajectory are determined on the first plane, and the second exit corner point is determined on the second plane; wherein the plane containing the second plane is the plane after the first plane has been rotated by a specified angle along the positive rotation direction of the pipe to be cut; Determine the center point of the pipe to be cut, and the plane coordinates corresponding to the center point, the first exit corner point, the first entry corner point, and the second exit corner point respectively; the horizontal coordinate of the plane coordinates represents the Y-axis coordinate, and the vertical coordinate represents the Z-axis coordinate; Calculate the corner radius corresponding to the corner based on the difference in x-coordinate between the first exit corner point and the first entry corner point, and the difference in y-coordinate between the second exit corner point and the center point: Along the positive rotation direction of the pipe to be cut, the corner buffer zone corresponding to the corner is determined based on the entry corner point, the corner radius, and the plane thickness.

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