Laser cutting methods for H-beams, laser cutting machines, electronic equipment, and storage media.

Abstract

A laser cutting method, laser cutting machine, electronic equipment, and storage medium for cutting tongue plates of an I-beam, wherein the I-beam includes a web and two flanges, the method comprising: a laser cutting head performing a first cut on the flanges to be cut from the outside of the I-beam; and a second cut from the inside of the I-beam above the web, at the connection point between the flanges and the web, wherein the cutting paths of the first and second cuts both extend along the extension direction of the web across the area to be removed from the flanges, and a first light beam direction intersects with a second light beam direction at the connection point corresponding to the connection point, thereby cutting out the side edges of the tongue plates, such that the side edges of the tongue plates are flush with or recessed relative to the inner surface of the flanges to be cut in a direction perpendicular to the inner surface of the flanges to be cut. This improves the cutting efficiency of the tongue plates and reduces the cutting difficulty.

Description

Technical Field

[0001] This invention relates to the field of laser cutting, and more particularly to a laser cutting method for I-beams, a laser cutting machine, electronic equipment, and a storage medium. Background Technology

[0002] I-beams can be understood as steel with an I-shaped cross-section, and typically include a web and flanges connected to both ends of the web.

[0003] In the prior art, a method for machining a flange by cutting a tongue plate into an I-beam is provided. Specifically, such as... Figure 1 and Figure 2 As shown, Figure 2 The view direction is Figure 1 In the direction A1, a pair of L-shaped cutting paths are first cut on the wing plate. Then, the remaining part 21 after the L-shaped cutting paths are cut and removed. However, the cutting paths planned for cutting out the tongue plate in this method are complex and have a long total length, resulting in low cutting efficiency and high difficulty. Summary of the Invention

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

[0005] To solve the above-mentioned technical problems, the present invention provides a laser cutting method for cutting an H-beam, wherein the H-beam includes a web and two flanges. The laser cutting method for the H-beam includes: a laser cutting head performing a first cut on the flange to be cut from the outside of the H-beam; and a second cut from the inside of the H-beam above the web, at the connection between the flange to be cut and the web. The cutting paths of the first cut and the second cut both extend across the area to be removed from the flange to be cut along the extension direction of the web. Furthermore, a first light direction and a second light direction intersect at the connection area corresponding to the connection point to cut out the side edge of the flange, so that the side edge of the flange is flush with or recessed relative to the inner surface of the flange to be cut in a direction perpendicular to the inner surface of the flange to be cut. The flange to be cut is one of the two flanges, the first light direction is the light direction of the cutting laser in the first cut, and the second light direction is the light direction of the cutting laser in the second cut.

[0006] Optionally, the connection point is the junction between the wing plate to be cut and the web plate. The connection area is a region within a preset deviation in a direction perpendicular to the inner surface of the wing plate to be cut, with the junction as a reference. The preset deviation includes a first preset deviation and a second preset deviation. The first preset deviation is the preset deviation corresponding to the offset in the direction of the web plate with the junction as a reference. The second preset deviation is the preset deviation corresponding to the offset in the direction of the wing plate to be cut with the junction as a reference. 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 cut is a follow-cut, in which the laser cutting head tilts toward the web plate and the direction of the second light beam forms an acute angle with the inner side of the wing plate to be cut.

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

[0009] Optionally, when performing the second cut, 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 cut is a follow-cut. When performing the first cut, the laser cutting head tilts away from the wing plate to be cut. The direction of the first light beam forms an acute angle with the outer surface of the wing plate to be cut. The angle range of the acute angle between the direction of the first light beam and the outer surface of the wing plate to be cut is 30° to 45°.

[0011] Optionally, the first kerf at the connection has a first projection on the outer surface of the flange to be cut, the cutting path of the second cut has a second projection on the outer surface of the flange to be cut, the second cut has a second kerf on the outer surface of the flange to be cut, and the laser cutting method for the I-beam further includes: a laser cutting head performing a third cut on the flange to be cut from the outside of the I-beam, the cutting path of the third cut extending from the top surface of the flange to be cut along the boundary of the area to be removed to the location of the second kerf, the direction of the third light beam forming an obtuse angle with the outer surface of the flange to be cut at least in the third cutting area, and the direction of the third light beam being opposite to the direction of the second light beam at the location of the second kerf, the third cutting area being the cutting path of the third cut. The area corresponding to the second projection from the second kerf location in the path of the laser cutting head is defined as follows: the third ray direction is the ray direction of the laser cutting head 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; the cutting path of the fourth cut extends 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; the fourth ray direction forms an acute angle with the outer surface of the wing plate to be cut at least in the fourth cutting area; and the fourth ray direction is consistent with the first ray direction at the cutting path of the first cut; the fourth cutting area is the area corresponding to the first projection from the cutting path of the first cut in the fourth cutting path; and the fourth ray direction is the ray direction of the laser cutting head for the fourth cut.

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

[0013] Accordingly, the technical solution of the present invention also provides a laser cutting machine, comprising: a placement module for placing an I-beam with its flanges extending upwards on the machine tool of the laser cutting machine; 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 laser cutting method described above.

[0014] Accordingly, 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 executes the program to implement the steps of the laser cutting method described above.

[0015] Accordingly, the technical solution of the present invention also provides a storage medium on which a program is stored, and when the program is executed by a processor, it implements the steps of the above-described laser cutting method.

[0016] Compared with the prior art, the technical solution of the present invention has the following beneficial effects: In the laser cutting method for I-beams provided by the technical solution of the present invention, since the laser cutting head performs a first cut and a second cut 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 at the connection area of ​​the web and the flange to be cut, an "X-shaped" cross cut is performed at the connection between the flange and the web without flipping the I-beam through the first cut and the second cut. Based on this, since both the first and second cuts traverse the area to be removed from the flange along the extension direction of the web, the area to be removed from the flange can be severed from the web without flipping the I-beam, thus cutting out the side edge of the tongue plate. The side edge of the tongue plate is then aligned with or recessed from the inner surface of the flange plate in a direction perpendicular to its inner surface. Therefore, on the one hand, the cutting process can directly form a wide tongue plate (a tongue plate with a width close to that of the web) without flipping the I-beam (applicable to various sizes of I-beams and various types of laser cutting equipment, including those without a flipping function). On the other hand, both the first and second cuts are simple straight lines, resulting in a shorter total cutting path length. This makes it suitable for a wide range of I-beam sizes and laser cutting equipment types, and improves the cutting efficiency of the tongue plate while reducing the cutting difficulty. In addition, the "X-shaped" 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 blade plate to be cut in the area to be removed, the scrap being cut can slide down the slope directly and avoid the scrap sticking to the I-beam.

[0017] Furthermore, because the laser cutting head tilts towards the web during the second cut, the direction of the second beam can form an acute angle with the inner surface of the wing plate to be cut, thus achieving an "X-shaped" cross-cut. Simultaneously, the second cut is a follow-cut, and during this cut, the laser cutting head needs to move close to the wing plate. Therefore, by tilting the laser cutting head towards the web to create an acute angle between the direction of the second beam and the inner surface of the wing plate, collisions between the laser cutting head and the wing plate can be avoided during the follow-cut second cut. Since the cutting head is close to the surface to be cut, the follow-cut method offers higher cutting precision, thereby improving cutting accuracy while preventing damage to the laser cutting head. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the cutting path in a process of drilling holes in a wing plate; Figure 2 This is a schematic diagram of the remaining part after L-shaped cutting path in a wing plate perforation process; Figure 3This is a schematic flowchart of a laser cutting method for I-beams according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the I-beam to be cut in one embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the tongue plate according to an embodiment of the present invention; Figure 6 and Figure 7 This is a schematic diagram of the first cut according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the first cut I-beam in one embodiment of the present invention; Figure 9 This is a schematic diagram of the second cutting according to an embodiment of the present invention; Figure 10 This is a schematic diagram showing the intersection of the first and second light ray directions in the connecting area according to an embodiment of the present invention; Figure 11 This is a schematic diagram of the connection area according to an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of the second cut I-beam in one embodiment of the present invention; Figure 13 This is a schematic diagram of the third cutting according to an embodiment of the present invention; Figure 14 This is a schematic diagram of the third ray direction according to an embodiment of the present invention; Figure 15 This is a schematic diagram of the fourth cutting according to an embodiment of the present invention; Figure 16 This is a schematic diagram of the fourth ray direction according to an embodiment of the present invention; Figure 17 This is a schematic diagram of the structure of the I-beam after the first, second, third, and fourth cuts are completed according to an embodiment of the present invention. Detailed Implementation

[0019] As described in the background section, 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 high difficulty.

[0020] To solve the above-mentioned technical problems, the present invention provides a laser cutting method for I-beams. A laser cutting head performs a first cut on the flange to be cut from the outside of the I-beam, and a second cut is performed on the inner side of the I-beam above the web, at the connection point between the flange and the web. Both the first and second cuts traverse the area to be removed from the flange along the extension direction of the web. Furthermore, the first and second light beam directions intersect at the connection point to cut out the side edge of the tongue plate. This ensures that the side edge of the tongue plate is flush with or recessed from the inner surface of the flange in a direction perpendicular to the inner surface of the flange, thereby improving the cutting efficiency of the tongue plate and reducing the cutting difficulty.

[0021] To make the above-mentioned objectives, features, and beneficial effects of the present invention more apparent and understandable, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. Additionally, directional terms such as above, below, up, down, upward, downward, left, right, etc., are used relative to exemplary embodiments as they are shown in the figures, with upward or upper directions pointing towards the top of the corresponding figure and downward or lower directions pointing towards the bottom of the corresponding figure.

[0023] Figure 3 This is a schematic flowchart 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 for I-beams includes the following steps: Step S100: The laser cutting head performs the first cut on the wing plate to be cut from the outside of the I-beam; Step S200: The laser cutting head makes a second cut from the inside of the I-beam above the web, at the connection between the flange to be cut and the web. Step S300: The laser cutting head performs a third cut on the wing plate to be cut from the outside of the I-beam; Step S400: The laser cutting head performs a fourth cut on the flange to be cut from the outside of the I-beam.

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

[0026] During the laser cutting process of the I-beam, it is placed with the flange 40 extending upwards.

[0027] Furthermore, the wing plate 40 is divided in the extending direction X of the web plate 30 into: a resection area I and a preservation area II excluding the resection area I. Through the... Figure 4 The wing plate 40 of the area to be removed I is cut to form Figure 5 The tongue plate 31 in the text means that the area to be cut I corresponds to the tongue plate 31. As a specific component of the I-beam, the tongue plate 31 is used to splice and weld together with another I-beam.

[0028] Among them, the wing plate to be cut 41 (such as Figures 6 to 12 (As shown in the diagram) is one of the two wing plates 40. That is to say, the object of the first and second cuts mentioned above is the same wing plate 40, and the side edge 311 on one side of the tongue plate 31 can be cut out through one first and second cut.

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

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

[0031] The cutting path of the first cut extends along the extension direction X of the web 30 across the area I to be removed of the flange 41 to be cut.

[0032] Furthermore, during the first cut, the laser cutting head tilts away from the blade 41 to be cut, and the first light beam direction forms an acute angle α with the outer surface 404 of the blade 41. This achieves the intersection of the first and second light beam directions at their corresponding connection points, as described later. Here, the first light beam direction is the direction of the cutting laser for the first cut, and the second light beam direction is the direction of the cutting laser for the second cut.

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

[0034] Furthermore, the first cut is a follow-up cut, which further improves the cutting accuracy.

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

[0036] In addition, please refer to Figure 8 , Figure 8 View direction and Figure 6 Consistent, the first cut at the joint slit 402 has a first projection 4041 on the outer side 404 of the wing plate 41 to be cut.

[0037] Please refer to Figure 9 , Figure 9 View direction and Figure 7 Consistent with step S200, the laser cutting head performs a second cut from the inner side of the I-beam above the web, at the connection between the flange 41 and the web 30.

[0038] The second cutting path extends along the extension direction X of the web 30, crossing the removal area I of the flange 41 to be cut. Furthermore, the first light direction and the second light direction intersect at the connection area Q at the corresponding connection point (e.g., Figure 10 As shown), to cut out the side edge 311 of the tongue plate 31 (as shown). Figure 17 As shown in the figure, the side edge 311 of the tongue plate 31 is flush with or recessed in the direction perpendicular to the inner side surface 401 of the blade plate 41 to be cut.

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

[0040] Effect: Since the laser cutting head performs the first cut and the second cut 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 at the connection area Q at the connection between the web 30 and the flange 41 to be cut, an "X-shaped" cross cut is performed at the connection between the flange 41 to be cut and the web 30 without flipping the I-beam.

[0041] Based on this, since both the first and second cutting paths extend along the extension direction X of the web 30 across the area to be removed from the flange 41, the first and second cuttings can cut the area to be removed from the flange 41 and the web 30 without flipping the I-beam, thus cutting out the side edge 311 of the tongue plate 31. The side edge 311 of the tongue plate 31 is then flush with or recessed in a direction perpendicular to the inner surface 401 of the flange 41. Therefore, 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) without flipping the I-beam (applicable to various sizes of I-beams and various types of laser cutting equipment, including laser cutting equipment without flipping). On the other hand, both the cutting paths of the first and second cuttings are simple straight lines, resulting in a shorter total cutting path length. Therefore, a wide range of I-beam sizes and laser cutting equipment types are applicable, and the cutting efficiency of the tongue plate is improved while the cutting difficulty is reduced. Furthermore, the "X-shaped" cross-cutting creates a slope with a large inclination angle on the side edge 311 of the tongue plate 31 (such as...). Figure 17 As shown in the diagram, when the web 30 is cut off from the blade 41 to be cut in the area to be removed I, it is advantageous for the scrap to be cut to slide down the slope directly, thus avoiding the adhesion between the scrap and the I-beam.

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

[0043] That is to say, the intersection point of the first ray direction and the second ray direction does not extend beyond the upper surface 301 and the lower surface 302 of the web 30.

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

[0045] The first preset deviation S1 is the preset deviation corresponding to the offset from the junction 6 to the web 30. The first preset deviation S1 is greater than or equal to zero.

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

[0047] Specifically, since there will be solder at the weld joint where the tongue plate 31 is spliced ​​and welded together with another I-beam, the intersection point of the first light direction and the second light direction can be slightly closer to the web plate 30 relative to the boundary 6. That is to say, the side edge 311 of the tongue plate 31 is preferably flush with the inner surface 401 of the flange plate 41 to be cut in the direction perpendicular to the inner surface 401 of the flange plate 41 to be cut. However, the side edge 311 of the tongue plate 31 can also be recessed inward relative to the inner surface 401 of the flange plate 41 to be cut in the direction perpendicular to the inner surface 401 of the flange plate 41 to be cut.

[0048] The second preset deviation S2 is the preset deviation corresponding to the offset in the direction of the boundary 6 towards the wing plate 41 to be cut. The second preset deviation S2 is greater than or equal to zero, and the second preset deviation S2 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] Furthermore, 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, during the second cut, the laser cutting head tilts towards the web 30, and the direction of the second light beam forms an acute angle β with the inner side 401 of the wing plate 41 to be cut.

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

[0053] Furthermore, the second cut is a follow-cut cut. When performing the second cut, the laser cutting head needs to move close to the wing plate to be cut. Therefore, by tilting the laser cutting head towards the web plate 30, the direction of the second light beam forms an acute angle β with the inner side 401 of the wing plate 41 to be cut. This also avoids collision between the laser cutting head and the wing plate 41 when performing the second cut in a follow-cut manner. Since the cutting head is close to the surface to be cut, the follow-cut cut has higher cutting accuracy. Thus, the cutting accuracy is improved while avoiding damage to the laser cutting head.

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

[0055] Furthermore, the second cut is a follow-up cut, which further improves the cutting accuracy.

[0056] Specifically, during the second cut, 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 cut, 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 View direction and Figure 8 Consistent, the cutting path of the second cut has a second projection 4042 on the outer side 404 of the wing plate 41 to be cut, and the second cut has a second slit 403 on the outer side 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 cut starts from the top surface 405 of the wing plate 41 to be cut, along the boundary between the area to be removed I and the area to be retained II, and ends at the location of the second cut 403.

[0060] The direction of the third light beam forms an obtuse angle γ with the outer surface 404 of the wing plate 41 to be cut at least in the third cutting area C1, and the direction of the third light beam is opposite to the direction of the second light beam at the location of the second kerf (i.e., the acute angle β and the obtuse angle γ are complementary). Therefore, the cutting laser of the third cut avoids the edge region G of the tongue plate, thus preventing cutting into the edge region G of the tongue plate 31 (e.g., ...). Figure 17 (as shown in the image).

[0061] Among them, the direction of the third ray is the direction of the ray of the cutting laser for the third cut.

[0062] Among them, the third cutting area C1 is the region in the cutting path of the third cut that corresponds to the location from the second projection 4042 to the second kerf 403.

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

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

[0065] Please refer to Figure 15 and Figure 16The laser cutting head performs a fourth cut 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 in the text.

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

[0068] The direction of the fourth light beam forms an acute angle θ with the outer surface 404 of the wing plate 41 to be cut at least in the fourth cutting area C2, and the direction of the fourth light beam is consistent with the direction of the first light beam at the cutting path of the first cut (i.e., the acute angle α and the acute angle θ are equal). Therefore, the cutting laser beam of the fourth cut avoids the edge region G of the tongue plate, thus preventing it from cutting the edge region G of the tongue plate 31 (e.g., ...). Figure 17 (as shown in the image).

[0069] Among them, the fourth ray direction is the ray direction of the cutting laser for the fourth cut.

[0070] Among them, the fourth cutting area C2 is the area in the cutting path of the fourth cutting that corresponds to the cutting path of the first cutting to the first projection 4041.

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

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

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

[0074] However, it should be understood that there is no strict execution order between the first cut, the second cut, the third cut, and the fourth cut. That is to say, in other embodiments, the order of steps S100, S200, 300, and S400 can be interchanged.

[0075] Furthermore, embodiments of the present invention include, but are not limited to, the third and fourth cuts described above. The third and fourth cuts are merely preferred methods for removing the wing plate 41 to be cut in the area to be removed (I) based on the first and second cuts. Any single or multiple cuts that can separate the wing plate 41 to be cut in the area to be removed (I) and the wing plate 41 to be cut in the area to be retained (II) based on the first and second cuts can replace the third and fourth cuts described above.

[0076] Accordingly, embodiments of the present invention also provide a laser cutting machine, including: 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 its flanges facing upwards. The control module controls the laser cutting head to cut the I-beam according to the laser cutting method described above.

[0078] This invention also provides an electronic device, including a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements the steps of the laser cutting method for I-beams described above.

[0079] This invention also provides a storage medium storing a program that, when executed by a processor, implements the steps of the laser cutting method for I-beams described above.

[0080] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A laser cutting method for I-beams, used for cutting flanges, said I-beams comprising a web and two flanges, characterized in that, The laser cutting method for the I-beam includes: The laser cutting head performs a first cut on the flange to be cut from the outside of the I-beam, and a second cut on the connection between the flange to be cut and the web from the inside of the I-beam above the web. The cutting paths of the first cut and the second cut are both traversing the area to be removed of the flange along the extension direction of the web. The second cut has a second slit on the outer side of the flange to be cut. The first light direction and the second light direction intersect at the connection area corresponding to the connection point to cut out the side edge of the tongue plate, so that the side edge of the tongue plate is flush with or recessed relative to the inner side of the flange to be cut in a direction perpendicular to the inner side of the flange to be cut. The laser cutting head performs a third and a fourth cut on the wing plate to be cut from the outside of the I-beam. The cutting path of the third cut extends from the top surface of the wing plate to the boundary of the area to be removed to the location of the second kerf. The cutting path of the fourth cut extends from the cutting path of the first cut to the boundary of the area to be removed to the bottom surface of the wing plate. 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 cut, and the second light direction is the light direction of the cutting laser for the second cut. The connection point is the boundary between the wing plate to be cut and the web plate. The connection area is a region within a preset deviation in a direction perpendicular to the inner surface of the wing plate to be cut, with the boundary as a reference. The side edges of the tongue plate formed after the first and second cuts are composed of slopes that are opposite to each other and intersect.

2. The laser cutting method for I-beams according to claim 1, characterized in that, The preset deviation includes a first preset deviation and a second preset deviation. The first preset deviation is the preset deviation corresponding to the offset in the direction of the web plate with the boundary as the reference. The second preset deviation is the preset deviation corresponding to the offset in the direction of the wing plate to be cut with the boundary as the reference. 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-beams according to claim 1, characterized in that, The second cut is a follow-cut. When the second cut is performed, the laser cutting head tilts towards the web, and the direction of the second light beam forms an acute angle with the inner side of the wing plate to be cut.

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

5. The laser cutting method for I-beams according to claim 3, characterized in that, During the second cut, 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-beams according to claim 1 or 3, characterized in that, The first cut is a follow-cut. When the first cut is performed, the laser cutting head tilts away from the wing plate to be cut. The direction of the first light beam forms an acute angle with the outer side of the wing plate to be cut. The angle range of the acute angle between the direction of the first light beam and the outer side of the wing plate to be cut is 30° to 45°.

7. The laser cutting method for I-beams according to claim 1, characterized in that, The first kerf at the connection has a first projection on the outer surface of the flange to be cut, and the cutting path of the second cut has a second projection on the outer surface of the flange to be cut. The laser cutting method for the I-beam further includes: The third light direction forms an obtuse angle with the outer 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 location of the second kerf. The third cutting area is the region in the cutting path of the third cut that corresponds to the location of the second projection to the location of the second kerf. The third light direction is the light direction of the cutting laser of the third cut. The fourth light direction forms an acute angle with the outer 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 cut. The fourth cutting area is the region in the cutting path of the fourth cut that corresponds to the cutting path of the first cut to the first projection. The fourth light direction is the light direction of the cutting laser of the fourth cut.

8. A laser cutting machine, characterized in that, include: A placement module is used to place the I-beam onto the machine tool of the laser cutting equipment with its web facing upwards. 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 I-beams as described in any one of claims 1-7.

9. An electronic device comprising a memory, a processor, and a program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps of the method according to any one of claims 1-7.

10. A storage medium having a program stored thereon, characterized in that, When the program is executed by a processor, it implements the steps of the method according to any one of claims 1-7.

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