Laser cutting method and laser cutting machine for I-shaped steel, electronic equipment and storage medium

Abstract

An I-beam laser cutting method, a laser cutting machine, electronic equipment and a storage medium are used for cutting a lingual plate, the I-beam comprises a web and two wing plates, and the method comprises the steps that a laser cutting head conducts first cutting on the wing plates to be cut from the outer side of the I-beam and conducts second cutting on the wing plates to be cut from the inner side, above the web, of the I-beam; the joint of the to-be-cut wing plate and the web plate is subjected to second cutting, the cutting paths of the first cutting and the second cutting stretch across the to-be-removed area of the to-be-cut wing plate in the extending direction of the web plate, the first light direction and the second light direction intersect in the connecting area corresponding to the joint, and the to-be-removed area of the to-be-cut wing plate intersects with the to-be-removed area of the to-be-cut wing plate. The side edge of the tongue plate is cut, so that the side edge of the tongue plate is flush with or contracts inwards relative to the inner side face of the to-be-cut wing plate in the direction perpendicular to the inner side face of the to-be-cut wing plate. Therefore, the cutting efficiency of the tongue plate is improved, and the cutting difficulty is reduced.

Description

Technical Field

[0001] The present invention relates to the field of laser cutting, and in particular to a laser cutting method for I-beams, a laser cutting machine, electronic equipment, and a storage medium. Background Art

[0002] I-beam can be understood as steel with an I-shaped cross-section, which usually includes a web and flanges connected to both ends of the web.

[0003] In the prior art, a method of processing a flange hole is provided to cut a tongue plate on an I-beam. Specifically, Figure 1 and Figure 2 As shown in Figure 2 The viewing direction is Figure 1 In the direction A1, a pair of L-shaped cutting paths are first cut in the wing plate, and then the remaining portion 21 after the L-shaped cutting paths are cut is cut and removed. However, the cutting paths planned for cutting the tongue plate in this method are complex and long in total length, resulting in low cutting efficiency and great difficulty. Summary of the Invention

[0004] The technical problem solved by the present invention is to provide a laser cutting method for I-beams, a laser cutting machine, an electronic device, and a storage medium to improve the cutting efficiency of tongue plates and reduce the cutting difficulty.

[0005] In order to solve the above technical problems, the technical solution of the present invention provides a laser cutting method for an I-beam, which is used for cutting a tongue plate. The I-beam includes a web and two wing plates. The laser cutting method for the I-beam includes: a laser cutting head performs a first cutting on the wing plate to be cut from the outside of the I-beam, and performs a second cutting on the connection between the wing plate to be cut and the web from the inner side of the I-beam above the web. The cutting paths of the first cutting and the second cutting both cross the to-be-cut wing plate's to-be-cut removal area along the extension direction of the web, and the first light direction and the second light direction intersect at the connection area corresponding to the connection to cut out the side edge of the tongue plate, so that the side edge of the tongue plate is flush with or retracted relative to the inner side surface of the wing plate to be cut in a direction perpendicular to the inner side surface of the wing plate to be cut; wherein the wing plate to be cut is one of the two wing plates, the first light direction is the light direction of the cutting laser for the first cutting, and the second light direction is the light direction of the cutting laser for the second cutting.

[0006] Optionally, the connection is the boundary between the wing plate to be cut and the web, and the connection area is based on the boundary, and is an area within a preset deviation along a direction perpendicular to the inner side surface of the wing plate to be cut, and the preset deviation includes a first preset deviation and a second preset deviation, the first preset deviation is a preset deviation corresponding to an offset in the direction of the web based on the boundary, and the second preset deviation is a preset deviation corresponding to an offset in the direction of the wing plate to be cut based on the boundary, the first preset deviation is greater than or equal to zero, and the second preset deviation is greater than or equal to zero and is determined based on the radiation range of the laser emitted by the laser cutting head.

[0007] Optionally, the second cutting is a follow-up cutting. When performing the second cutting, the laser cutting head tilts toward the web, and an acute angle is formed between the direction of the second light and the inner side surface of the wing plate to be cut.

[0008] Optionally, the acute angle between the second light direction and the inner side surface of the wing plate to be cut is in the range of 30° to 45°.

[0009] Optionally, when performing the second cutting, the following height of the laser cutting head relative to the surface of the I-beam is less than 10 mm.

[0010] Optionally, the first cutting is a follow-up cutting. When performing the first cutting, the laser cutting head tilts away from the wing plate to be cut, and an acute angle is formed between the first light direction and the outer side surface of the wing plate to be cut, and the acute angle between the first light direction and the outer side surface of the wing plate to be cut is in the range of 30°~45°.

[0011] Optionally, the first cutting slit at the connection has a first projection on the outer side surface of the wing plate to be cut, the cutting path of the second cutting has a second projection on the outer side surface of the wing plate to be cut, the second cutting has a second slit on the outer side surface of the wing plate to be cut, and the laser cutting method of the I-beam further includes: the laser cutting head performs a third cutting on the wing plate to be cut from the outside of the I-beam, the cutting path of the third cutting is from the top surface of the wing plate to be cut along the boundary of the area to be removed to the position where the second slit is located, the third light direction forms an obtuse angle with the outer side surface of the wing plate to be cut at least in the third cutting area, and the third light direction is opposite to the second light direction at the position where the second slit is located, and the third cutting area is the cutting path of the third cutting. The laser cutting head performs a fourth cutting on the wing plate to be cut from the outside of the I-beam, and the cutting path of the fourth cutting is from the cutting path of the first cutting along the boundary of the area to be removed to the bottom surface of the wing plate to be cut. The fourth light direction forms an acute angle with the outer side surface of the wing plate to be cut at least in the fourth cutting area, and the fourth light direction is consistent with the first light direction at the cutting path of the first cutting. The fourth cutting area is the area corresponding to the first projection in the cutting path of the fourth cutting, and the fourth light direction is the light direction of the cutting laser for the fourth cutting.

[0012] Optionally, the side edges of the tongue plate formed after the first cutting and the second cutting are composed of slopes that are opposite to each other and intersect with each other.

[0013] Correspondingly, the technical solution of the present invention also provides a laser cutting machine, comprising: a placement module for placing the I-beam on the machine tool of the laser cutting machine with the wing plates extending upward; a control module and a laser cutting head, wherein the control module controls the laser cutting head to cut the I-beam according to the above-mentioned laser cutting method.

[0014] Correspondingly, the technical solution of the present invention also provides an electronic device, including a memory, a processor, and a program stored in the memory and executable on the processor, wherein the processor implements the steps of the above-mentioned laser cutting method when executing the program.

[0015] Correspondingly, the technical solution of the present invention further provides a storage medium on which a program is stored, and when the program is executed by a processor, the steps of the above-mentioned laser cutting method are implemented.

[0016] Compared with the prior art, the technical solution of the present invention has the following beneficial effects: In the laser cutting method of I-beams provided by the technical solution of the present invention, since the laser cutting head performs the first cutting and the second cutting from the outside of the I-beam and the inside of the I-beam above the web respectively, and the first light direction and the second light direction intersect in the connection area of ​​the connection between the corresponding web and the wing plate to be cut, therefore, through the first cutting and the second cutting, without flipping the I-beam, the connection between the wing plate to be cut and the web is cross-cut in an "X-type" manner. On this basis, since the cutting paths of the first and second cuts both span the area to be removed of the wing plate to be cut along the extension direction of the web, the first and second cuts can cut between the area to be removed of the wing plate to be cut and the web without flipping the I-beam, thereby cutting out the side edge of the tongue plate, and making the side edge of the tongue plate flush or inward relative to the inner side surface of the wing plate to be cut in a direction perpendicular to the inner side surface of the wing plate to be cut. Thus, on the one hand, the cutting process can directly achieve the formation of a wide tongue plate (a wide tongue plate refers to a tongue plate with a width close to that of the web) without flipping the I-beam (applicable to I-beams of various sizes and various types of laser cutting equipment, including laser cutting equipment without a flipping function); on the other hand, the cutting paths of the first and second cuts are both simple straight lines, which can make the total length of the cutting path shorter. As a result, a wide range of I-beam sizes and types of laser cutting equipment are applicable, and the cutting efficiency of cutting the tongue plate is improved and the cutting difficulty is reduced. In addition, the "X-type" cross-cutting creates a slope with a large inclination angle on the side edge of the tongue plate. Therefore, when the web plate is cut off from the wing plate to be cut in the area to be removed, the cut waste is conducive to sliding down the slope and sliding directly, avoiding adhesion between the waste and the I-beam.

[0017] Furthermore, because the laser cutting head tilts toward the web during the second cut, an acute angle can be formed between the second light direction and the inner side surface of the wing to be cut, thereby achieving an "X-shaped" cross-cut. At the same time, the second cut is a follow-up cut, and when performing the second cut, the laser cutting head needs to move close to the wing to be cut. Therefore, by tilting the laser cutting head toward the web, an acute angle is formed between the second light direction and the inner side surface of the wing to be cut. This can also prevent the laser cutting head from colliding with the wing to be cut during the second cut in a follow-up cut manner. Follow-up cuts have higher cutting accuracy due to the proximity of the cutting head to the surface to be cut, thereby improving cutting accuracy while avoiding damage to the laser cutting head. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the cutting path in a wing plate hole excavation processing method; Figure 2 This is a schematic diagram of the portion remaining after cutting the L-shaped cutting path in a wing plate hole excavation processing method; Figure 31 is a schematic flow chart of a laser cutting method for an I-beam according to an embodiment of the present invention; Figure 4 1 is a schematic structural diagram of an I-beam to be cut in one embodiment of the present invention; Figure 5 This is a schematic structural diagram of a tongue plate according to an embodiment of the present invention; Figure 6 and Figure 7 is a schematic diagram of a first cutting according to an embodiment of the present invention; Figure 8 1 is a schematic structural diagram of an I-beam after first cutting in one embodiment of the present invention; Figure 9 is a schematic diagram of a second cutting according to an embodiment of the present invention; Figure 10 is a schematic diagram of the intersection of a first light direction and a second light direction at a connection area according to an embodiment of the present invention; Figure 11 is a schematic diagram of a connection area according to an embodiment of the present invention; Figure 12 2 is a schematic structural diagram of an I-beam after the second cutting in one embodiment of the present invention; Figure 13 is a schematic diagram of a third cutting according to an embodiment of the present invention; Figure 14 is a schematic diagram of a third light direction according to an embodiment of the present invention; Figure 15 is a schematic diagram of a fourth cutting according to an embodiment of the present invention; Figure 16 is a schematic diagram of a fourth light direction according to an embodiment of the present invention; Figure 17 It is a schematic structural diagram of an I-beam after completing the first cutting, the second cutting, the third cutting and the fourth cutting according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] As described in the background art, the cutting path planned for cutting out the tongue plate in the prior art is complex and has a long total length, resulting in low cutting efficiency and great difficulty.

[0020] In order to solve the above technical problems, the technical solution of the present invention provides a laser cutting method for I-beams, wherein a laser cutting head is used to perform a first cutting on the wing plate to be cut from the outside of the I-beam, and a second cutting is performed on the connection between the wing plate to be cut and the web from the inner side of the I-beam above the web. The cutting paths of the first cutting and the second cutting both cross the area to be removed of the wing plate to be cut along the extension direction of the web, and the first light direction and the second light direction intersect in the connection area of ​​the corresponding connection to cut out the side edge of the tongue plate, so that the side edge of the tongue plate is flush with or retracted relative to the inner side surface of the wing plate to be cut in a direction perpendicular to the inner side surface of the wing plate to be cut, thereby improving the cutting efficiency of the tongue plate and reducing the cutting difficulty.

[0021] To make the above-mentioned objects, features, and beneficial effects of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0022] The terms "first," "second," "third," "fourth," and the like (if any) in the description and claims of the present invention and in the drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments of the present invention described herein can be implemented in orders other than those illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions; for example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements that are not explicitly listed or that are inherent to such processes, methods, products, or apparatuses. In addition, directional terms such as above, below, up, down, upward, downward, left, right, and the like are used relative to the exemplary embodiments as they are shown in the figures, with an upward or upper direction being toward the top of the corresponding figure and a downward or lower direction being toward the bottom of the corresponding figure.

[0023] Figure 3 The figure is a flow chart of a laser cutting method for I-beams according to an embodiment of the present invention.

[0024] Please refer to Figure 3 , the laser cutting method of I-beam includes the following steps: Step S100: The laser cutting head performs a first cut on the wing plate to be cut from the outside of the I-beam; Step S200: The laser cutting head performs a second cut on the connection between the flange to be cut and the web from the inner side of the I-beam above the web; Step S300: The laser cutting head performs a third cut on the wing plate to be cut from the outer side of the I-beam; In step S400, the laser cutting head performs a fourth cut on the wing plate to be cut from the outside of the I-beam.

[0025] Please refer to Figures 4 and 5 , Figure 5 The viewing direction is Figure 4 In the direction A2 (i.e., the top view), the I-beam includes a web 30 and two flanges 40. The two flanges 40 are respectively located on both sides of the web 30 and connected to the web 30, forming an I-shaped structure such as a national standard I-beam, H-steel, etc.

[0026] During the laser cutting process of the I-beam, it is placed in a manner such that the wing panels 40 extend upward.

[0027] In addition, the wing plate 40 is divided into a to-be-cut-away area I and a reserved area II outside the to-be-cut-away area I in the extending direction X of the web 30. Figure 4 The wing plate 40 of the area to be cut I is cut to form Figure 5 In other words, the tongue plate 31 is corresponding to the area I to be cut away. As a specific component of the I-beam, the tongue plate 31 is welded together after being spliced ​​with another I-beam.

[0028] Among them, the wing plate 41 to be cut (such as Figures 6 to 12 ) is one of the two wing plates 40. That is, the cutting object of the first cutting and the second cutting is the same wing plate 40, and the side edge 311 on one side of the tongue plate 31 can be cut out by the first cutting and the second cutting at one time.

[0029] The connection between the wing plate 41 to be cut and the web 30 has a boundary 6 between the wing plate 41 to be cut and the web 30 .

[0030] Please combine Figure 3 refer to Figure 6 and Figure 7 , Figure 7 The viewing direction is Figure 6 In the direction X (ie, the side view in the direction X), for step S100, the laser cutting head performs a first cutting on the wing plate 41 to be cut from the outer side of the I-beam.

[0031] The cutting path of the first cutting crosses the to-be-removed area I of the to-be-cut wing panel 41 along the extension direction X of the web 30 .

[0032] Furthermore, during the first cut, the laser cutting head tilts away from the wing plate 41 to be cut, forming an acute angle α between the first light direction and the outer side surface 404 of the wing plate 41 to be cut. This allows the first and second light directions, described later, to intersect at the corresponding connection points. The first light direction is the direction of the laser beam used for the first cut, and the second light direction is the direction of the laser beam used for the second cut.

[0033] Preferably, the acute angle α between the first light direction and the outer side surface 404 of the wing plate 41 to be cut is in the range of 30° to 45°.

[0034] Furthermore, the first cutting is a follow-up cutting, thereby further improving the cutting accuracy.

[0035] Specifically, during the first cutting, the following height of the laser cutting head relative to the surface of the I-beam is less than 10 mm. Preferably, during the first cutting, the following height of the laser cutting head relative to the surface of the I-beam is less than 5 mm.

[0036] In addition, please refer to Figure 8 , Figure 8 The viewing direction and Figure 6 Consistently, the first cut 402 formed at the connection has a first projection 4041 on the outer side surface 404 of the wing plate 41 to be cut.

[0037] Please refer to Figure 9 , Figure 9 The viewing direction and Figure 7 Consistently, for step S200 , the laser cutting head performs a second cut on the connection between the wing plate 41 to be cut and the web 30 from the inner side of the I-beam above the web.

[0038] The cutting path of the second cutting crosses the area to be removed I of the wing plate 41 to be cut along the extension direction X of the web 30. In addition, the first light direction and the second light direction intersect at the connection area Q of the corresponding connection (such as Figure 10 ), to cut out the side edge 311 of the tongue plate 31 (as shown in Figure 17 ), so that the side edge 311 of the tongue plate 31 is flush with or retracted relative to the inner side surface 401 of the wing plate 41 to be cut in a direction perpendicular to the inner side surface 401 of the wing plate 41 to be cut.

[0039] The side edge 311 of the tongue plate 31 formed after the first cutting and the second cutting is composed of upper and lower slopes that are opposite to each other and intersect with each other.

[0040] Effect: Since the laser cutting head performs the first cutting and the second cutting from the outside of the I-beam and the inside of the I-beam above the web 30 respectively, and the first light direction and the second light direction intersect in the connection area Q where the corresponding web 30 and the wing plate 41 to be cut are connected, therefore, through the first cutting and the second cutting, without flipping the I-beam, an "X-shaped" cross cutting is performed on the connection between the wing plate 41 to be cut and the web 30.

[0041] On this basis, because the cutting paths of both the first and second cuts span the area to be removed of the wing plate 41 to be cut along the extension direction X of the web 30, the first and second cuts can, without flipping the I-beam, be cut between the area to be removed I of the wing plate 41 to be cut and the web 30, thereby cutting out the side edge 311 of the tongue plate 31, and making the side edge 311 of the tongue plate 31 flush with or indented relative to the inner side surface 401 of the wing plate 41 to be cut in a direction perpendicular to the inner side surface 401 of the wing plate 41 to be cut. Thus, on the one hand, the cutting process can directly form a wide tongue plate (a wide tongue plate refers to a tongue plate with a width close to that of the web plate) without flipping the I-beam (applicable to I-beams of various sizes and various types of laser cutting equipment, including laser cutting equipment without a flipping function). On the other hand, the cutting paths of the first and second cuts are both simple straight lines, which can shorten the total length of the cutting paths. As a result, a wide range of I-beam sizes and types of laser cutting equipment are applicable, and the cutting efficiency of the tongue plate is improved and the cutting difficulty is reduced. In addition, the "X-shaped" cross cutting forms a slope with a large inclination angle (such as Figure 17 As shown in FIG, when the web 30 is cut off from the wing plate 41 to be cut in the area I to be removed, the cut waste material is facilitated to slide down the slope and directly fall, thereby avoiding adhesion between the waste material and the I-beam.

[0042] For details, please refer to Figure 10 and Figure 11 The connection area Q is based on the junction 6 and is within a preset deviation along a direction perpendicular to the inner side surface 401 of the wing plate 41 to be cut.

[0043] That is, the intersection point of the first light direction and the second light direction does not exceed the upper surface 301 and the lower surface 302 of the web 30 .

[0044] Furthermore, the preset deviation includes a first preset deviation S1 and a second preset deviation S2.

[0045] The first preset deviation S1 is a preset deviation corresponding to an offset in the direction of the web 30 based on the junction 6 , and the first preset deviation S1 is greater than or equal to zero.

[0046] Preferably, the first preset deviation S1 is zero.

[0047] Specifically, because solder will be present at the weld where the tongue plate 31 is welded to another I-beam, the intersection of the first and second light directions can be slightly closer to the web 30 relative to the intersection 6. In other words, the side edge 311 of the tongue plate 31 is preferably flush with the inner side surface 401 of the wing plate 41 to be cut in a direction perpendicular to the inner side surface 401 of the wing plate 41 to be cut. However, the side edge 311 of the tongue plate 31 can also be retracted relative to the inner side surface 401 of the wing plate 41 to be cut in a direction perpendicular to the inner side surface 401 of the wing plate 41 to be cut.

[0048] The second preset deviation S2 is a preset deviation corresponding to the direction offset of the wing plate 41 to be cut based on the intersection 6. The second preset deviation S2 is greater than or equal to zero, and is determined based on the radiation range of the laser emitted by the laser cutting head.

[0049] Preferably, the second preset deviation S2 is zero.

[0050] In addition, since the laser has a certain range of radiation, even if the second preset deviation S2 is greater than zero, the radiation of the laser during cutting can still make the side edge 311 of the tongue plate 31 flush with the inner side surface 401 of the wing plate 41 to be cut in a direction perpendicular to the inner side surface 401 of the wing plate 41 to be cut.

[0051] Furthermore, when performing the second cutting, the laser cutting head tilts toward the web 30 , and an acute angle β is formed between the second light direction and the inner side surface 401 of the wing plate 41 to be cut.

[0052] Since the first light direction forms an acute angle α with the outer side surface 404 of the wing plate 41 to be cut, and the second light direction forms an acute angle β with the inner side surface 401 of the wing plate 41 to be cut, the first light direction and the second light direction intersect in the connection area Q at the corresponding connection point, thereby achieving "X-shaped" cross cutting.

[0053] Not only that, the second cutting is a follow-up cutting, and when performing the second cutting, the laser cutting head needs to move to a position close to the wing plate to be cut. Therefore, the laser cutting head is tilted toward the web 30, so that the second light direction and the inner side surface 401 of the wing plate 41 to be cut form an acute angle β. It can also avoid the collision between the laser cutting head and the wing plate 41 to be cut when the second cutting is performed in a follow-up cutting manner. The follow-up cutting has higher cutting accuracy because the cutting head is close to the surface to be cut, thereby improving the cutting accuracy while avoiding damage to the laser cutting head.

[0054] Preferably, the acute angle β between the second light direction and the outer side surface 404 of the wing plate 41 to be cut is in the range of 30° to 45°.

[0055] Furthermore, the second cutting is a follow-up cutting, thereby further improving the cutting accuracy.

[0056] Specifically, during the second cutting, the following height of the laser cutting head relative to the surface of the I-beam is less than 10 mm. Preferably, during the second cutting, the following height of the laser cutting head relative to the surface of the I-beam is less than 5 mm.

[0057] In addition, please refer to Figure 12 , Figure 12 The viewing direction and Figure 8 Consistently, the cutting path of the second cutting has a second projection 4042 on the outer side surface 404 of the wing plate 41 to be cut, and the second cutting has a second slit 403 on the outer side surface 404 of the wing plate 41 to be cut.

[0058] Please refer to Figure 13 and Figure 14 The laser cutting head performs a third cut on the wing plate 41 to be cut from the outside of the I-beam.

[0059] The cutting path of the third cutting is from the top surface 405 of the wing plate 41 to be cut along the boundary between the to-be-removed area I and the reserved area II to the position where the second cutting line 403 is located.

[0060] The third light direction forms an obtuse angle γ with the outer side surface 404 of the wing plate 41 to be cut at least in the third cutting area C1, and the third light direction is opposite to the second light direction at the location of the second slit (i.e., the acute angle β is complementary to the obtuse angle γ). As a result, the cutting laser of the third cutting avoids the edge area G of the tongue plate, thereby avoiding cutting the edge area G of the tongue plate 31 (such as Figure 17 ).

[0061] The third light direction is the light direction of the cutting laser for the third cutting.

[0062] The third cutting area C1 is an area corresponding to the position of the second projection 4042 to the second slit 403 in the cutting path of the third cutting.

[0063] In this embodiment, the third light direction is perpendicular to the outer side surface 404 of the wing plate 41 to be cut outside the third cutting area C1. Vertical cutting can better maintain the intersection of the cutting laser during the follow-up cutting, thereby further improving the cutting accuracy of the third cutting.

[0064] Preferably, from the second projection to the location of the second slit, the direction of the third light gradually changes from being perpendicular to the outer side surface 404 of the wing plate 41 to be cut to being opposite to the second light direction, thereby further improving the cutting continuity of the third cut.

[0065] Please refer to Figure 15 and Figure 16The laser cutting head performs the fourth cutting on the wing plate 41 to be cut from the outside of the I-beam.

[0066] It should be noted that, for ease of understanding, Figure 15 The third cut is not shown.

[0067] The cutting path of the fourth cutting is from the cutting path of the first cutting along the boundary between the to-be-removed area I and the reserved area II to the bottom surface 406 of the to-be-cut wing plate 41 .

[0068] The fourth light direction forms an acute angle θ with the outer side surface 404 of the wing plate 41 to be cut at least in the fourth cutting area C2, and the fourth light direction is consistent with the first light direction at the cutting path of the first cutting (that is, the acute angle α is equal to the acute angle θ). As a result, the cutting laser light of the fourth cutting avoids the edge area G of the tongue plate, thereby avoiding cutting the edge area G of the tongue plate 31 (such as Figure 17 ).

[0069] The fourth light direction is the light direction of the cutting laser for the fourth cutting.

[0070] The fourth cutting area C2 is an area corresponding to the first projection 4041 in the cutting path of the fourth cutting.

[0071] In this embodiment, the fourth light direction is perpendicular to the outer side surface 404 of the wing plate 41 to be cut outside the fourth cutting area C2. Vertical cutting can better maintain the intersection of the cutting laser during the follow-up cutting, thereby further improving the cutting accuracy of the fourth cutting.

[0072] Preferably, from the cutting path of the first cut to the first projection 4041, the fourth light direction gradually changes from being consistent with the second light direction to being perpendicular to the outer side surface 404 of the wing plate 41 to be cut. Thus, the cutting continuity of the fourth cut is further improved.

[0073] Thus, the wing plate 41 to be cut in the to-be-cut area I is removed by the first, second, third, and fourth cuts, and the tongue plate 31 is cut out. In this embodiment, the fourth cut is performed after the first cut, so that the angle adjustment of the laser cutting head is continuous, thereby further improving the cutting efficiency and convenience.

[0074] However, it should be understood that there is no strict execution order among the first cutting, the second cutting, the third cutting and the fourth cutting, that is, in other embodiments, the order of step S100, step S200, step 300 and step S400 can be interchanged.

[0075] In addition, the embodiments of the present invention include but are not limited to the above-mentioned third cutting and fourth cutting. The above-mentioned third cutting and fourth cutting are merely a preferred method for removing the wing plate 41 to be cut in the area I to be removed based on the first cutting and the second cutting. As long as a single or multiple cutting can be used to separate the wing plate 41 to be cut in the area I to be removed and the wing plate 41 to be cut in the retained area II based on the first cutting and the second cutting, the above-mentioned third cutting and fourth cutting can be replaced.

[0076] Correspondingly, an embodiment of the present invention further provides a laser cutting machine, comprising: a placement module, a control module and a laser cutting head.

[0077] The placement module is used to place the I-beam on the laser cutting machine with the wing plates extending upward. The control module controls the laser cutting head to cut the I-beam according to the laser cutting method for the I-beam.

[0078] An embodiment of the present invention further provides an electronic device comprising a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, the steps of the above-mentioned laser cutting method for I-beams are implemented.

[0079] An embodiment of the present invention further provides a storage medium having a program stored thereon, which implements the steps of the above-mentioned laser cutting method for I-beams when the program is executed by a processor.

[0080] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A laser cutting method for an I-beam, for cutting a tongue plate, wherein the I-beam comprises a web and two wing plates, characterized in that: The laser cutting method of the I-beam comprises: The laser cutting head performs a first cut on the wing plate to be cut from the outside of the I-beam, and performs a second cut on the connection between the wing plate to be cut and the web from the inside of the I-beam above the web, wherein the cutting paths of the first cut and the second cut both cross the area to be removed of the wing plate to be cut along the extension direction of the web, and the first light direction and the second light direction intersect at the connection area corresponding to the connection, so as to cut out the side edge of the tongue plate, so that the side edge of the tongue plate is flush with or retracted relative to the inner side surface of the wing plate to be cut in a direction perpendicular to the inner side surface of the wing plate to be cut; The wing plate to be cut is one of the two wing plates, the first light direction is the light direction of the cutting laser for the first cutting, and the second light direction is the light direction of the cutting laser for the second cutting.

2. The laser cutting method for I-beam according to claim 1, characterized in that: The connection is the boundary between the wing plate to be cut and the web, and the connection area is based on the boundary, and is an area within a preset deviation along a direction perpendicular to the inner side surface of the wing plate to be cut, and the preset deviation includes a first preset deviation and a second preset deviation, the first preset deviation is a preset deviation corresponding to an offset in the direction of the web based on the boundary, and the second preset deviation is a preset deviation corresponding to an offset in the direction of the wing plate to be cut based on the boundary, the first preset deviation is greater than or equal to zero, and the second preset deviation is greater than or equal to zero and is determined based on the radiation range of the laser emitted by the laser cutting head.

3. The laser cutting method for I-beam according to claim 1, characterized in that: The second cutting is a follow-up cutting. When performing the second cutting, the laser cutting head tilts toward the web, and an acute angle is formed between the direction of the second light and the inner side surface of the wing plate to be cut.

4. The laser cutting method for I-beam according to claim 3, characterized in that: The acute angle between the second light direction and the inner side surface of the wing plate to be cut is in the range of 30° to 45°.

5. The laser cutting method for I-beam according to claim 3, characterized in that: When performing the second cutting, the following height of the laser cutting head relative to the surface of the I-beam is less than 10 mm.

6. The laser cutting method for I-beam according to claim 1 or 3, characterized in that: The first cutting is a follow-up cutting. When performing the first cutting, the laser cutting head tilts away from the wing plate to be cut, and an acute angle is formed between the first light direction and the outer side surface of the wing plate to be cut, and the acute angle between the first light direction and the outer side surface of the wing plate to be cut is in the range of 30°~45°.

7. The laser cutting method for I-beam according to claim 1, characterized in that: The first cut at the connection has a first projection on the outer side of the wing plate to be cut, the cutting path of the second cut has a second projection on the outer side of the wing plate to be cut, and the second cut has a second cut on the outer side of the wing plate to be cut. The laser cutting method of the I-beam further includes: The laser cutting head performs a third cut on the wing plate to be cut from the outside of the I-beam, the cutting path of the third cut being from the top surface of the wing plate to be cut along the boundary of the area to be removed to the position where the second slit is located, the third light direction forms an obtuse angle with the outer side surface of the wing plate to be cut at least in the third cutting area, and the third light direction is opposite to the second light direction at the position where the second slit is located, the third cutting area is the area corresponding to the second projection to the position where the second slit is located in the cutting path of the third cut, and the third light direction is the light direction of the cutting laser for the third cut; The laser cutting head performs a fourth cut on the wing plate to be cut from the outside of the I-beam, and the cutting path of the fourth cut is from the cutting path of the first cut along the boundary of the area to be removed to the bottom surface of the wing plate to be cut, and the fourth light direction forms an acute angle with the outer side surface of the wing plate to be cut at least in the fourth cutting area, and the fourth light direction is consistent with the first light direction at the cutting path of the first cutting, the fourth cutting area is the area in the cutting path of the fourth cut from the cutting path of the first cut to the first projection, and the fourth light direction is the light direction of the cutting laser of the fourth cut.

8. The laser cutting method for I-beam according to claim 1, characterized in that: The side edges of the tongue plate formed after the first cutting and the second cutting are composed of slopes that are opposite to each other and intersect with each other.

9. A laser cutting machine, characterized in that: include: a placement module, used for placing the I-beam with the web facing upward on the machine tool of the laser cutting equipment; A control module and a laser cutting head, wherein the control module controls the laser cutting head to cut the I-beam using the laser cutting method for the I-beam according to any one of claims 1 to 8.

10. An electronic device comprising a memory, a processor, and a program stored in the memory and executable on the processor, wherein: When the processor executes the program, the steps of the method according to any one of claims 1 to 8 are implemented.

11. A storage medium having a program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

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