Welding method and apparatus for aluminum weldment, storage medium, and electronic device
By obtaining the target welding parameters and welding path matching the properties of the aluminum weldment, and combining laser welding methods with different power controls, the problem of poor welding quality of aluminum weldments was solved, and efficient and stable welding results were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHAN RAYCUS FIBER LASER TECHNOLOGY CO LTD
- Filing Date
- 2023-05-31
- Publication Date
- 2026-04-17
AI Technical Summary
The welding quality of aluminum components is poor, and defects such as spatter, bursting, incomplete welding and cracks are prone to occur, resulting in low production efficiency.
By obtaining the target welding parameters and matching the properties of the aluminum weldment with the first and second welding paths, a laser welding method is used to control the welding stress. Stable welding is achieved by using different powers and temperatures of the first and second lasers.
It improves the welding quality of aluminum weldments, reduces defects such as spatter, pores, and incomplete welds, and increases welding efficiency and product quality.
Smart Images
Figure CN116511718B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of laser welding, and more specifically, to a welding method and apparatus for aluminum weldments, a storage medium, and an electronic device. Background Technology
[0002] Aluminum, with its excellent electrical and thermal conductivity, is widely used in industries such as manufacturing and automotive. However, its high light reflectivity makes laser welding of aluminum products quite challenging. Current technologies often require relatively low welding speeds for aluminum products, which can lead to slow production efficiency. Furthermore, aluminum products are unstable during welding, making them prone to defects such as spatter, porosity, incomplete welds, and cracks, severely impacting the weld quality.
[0003] No effective solutions have yet been proposed to address the poor welding quality of aluminum weldments in related technologies. Summary of the Invention
[0004] This application provides a welding method and apparatus for aluminum weldments, a storage medium, and an electronic device to at least solve the problems of poor welding quality of aluminum weldments in related technologies.
[0005] According to one embodiment of this application, a welding method for aluminum weldments is provided, comprising:
[0006] Obtain the target welding parameters corresponding to the aluminum workpiece to be welded, wherein the target welding parameters are used to indicate the welding method that allows the welding quality of the aluminum workpiece to be greater than or equal to the target welding quality;
[0007] A first welding path matching the weldment properties of the aluminum weldment is obtained, and a second welding path is obtained according to the target welding parameters and the first welding path. The target welding path includes the first welding path and the second welding path. The first welding path is used to weld the aluminum weldment, and the second welding path is used to control the welding stress generated by the first welding path on the aluminum weldment.
[0008] Using the target welding parameters, the aluminum workpiece is welded to the workpiece to be welded according to the target welding path.
[0009] Optionally, obtaining the first welding path that matches the weldment properties of the aluminum weldment includes:
[0010] Obtain a first path parameter that matches the properties of the weldment, wherein the first path parameter includes: the inner diameter of the helix, the outer diameter of the helix, and the spacing between the helixes;
[0011] Create a spiral path that satisfies the first path parameters as the first welding path.
[0012] Optionally, obtaining the second welding path based on the target welding parameters and the first welding path includes:
[0013] The target welding speed is obtained from the target welding parameters, wherein the target welding speed is used to indicate the speed at which the aluminum workpiece is welded;
[0014] When the target welding speed is greater than or equal to the welding speed threshold, a second path parameter matching the first path parameter is obtained, wherein the second path parameter includes: multiple sets of arc diameters and center angles with corresponding relationships;
[0015] Create arc paths that satisfy the corresponding arc diameter and center angle for each group to obtain multiple arc paths as the second welding path. The multiple arc paths are evenly distributed outside the spiral path, and the center of each arc path coincides with the center of the inner diameter of the spiral path.
[0016] Optionally, obtaining the second path parameter that matches the first path parameter includes:
[0017] Predict the target welding stress generated on the aluminum workpiece by the welding path that satisfies the first path parameters;
[0018] Generate the multiple sets of corresponding arc diameters and center angles corresponding to the target welding stress as the second path parameters, wherein the multiple sets of corresponding arc diameters and center angles are used to indicate the welding path that allows the target welding stress to be reduced to the target stress range.
[0019] Optionally, the step of welding the aluminum workpiece to the workpiece to be welded using the target welding parameters and according to the target welding path includes:
[0020] Obtain the first welding power and the second welding power carried in the target welding parameters;
[0021] A first laser with the first welding power and a second laser with the second welding power are generated;
[0022] The first laser is controlled to weld the aluminum workpiece to the workpiece along the first welding path and the second welding path in sequence according to the target welding speed carried in the target welding parameters, and the temperature of the aluminum workpiece is controlled by the second laser during the welding process.
[0023] Optionally, controlling the first laser to weld the aluminum workpiece to the workpiece along the first welding path and the second welding path sequentially according to the target welding speed carried in the target welding parameters, and controlling the temperature of the aluminum workpiece through the second laser during the welding process, includes:
[0024] The second laser is controlled to preheat the aluminum weldment;
[0025] When the preheating temperature reaches the target temperature, the first laser is controlled to start welding the aluminum workpiece to the workpiece to be welded along the first welding path and the second welding path in sequence at the target welding speed.
[0026] The second welding power of the second laser is controlled during the process of controlling the first laser to weld the aluminum workpiece.
[0027] Optionally, the step of welding the aluminum workpiece to the workpiece to be welded using the target welding parameters and according to the target welding path includes:
[0028] Obtain the power battery as the weldment to be welded;
[0029] Using the target welding parameters and following the target welding path, the aluminum adapter piece is welded to the power battery, wherein the aluminum weldment includes the aluminum adapter piece.
[0030] According to another embodiment of the present application, a welding apparatus for aluminum weldments is also provided, comprising: a first acquisition module, configured to acquire target welding parameters corresponding to the aluminum weldment to be welded, wherein the target welding parameters are used to indicate a welding method that allows the welding quality of the aluminum weldment to be greater than or equal to the target welding quality;
[0031] The second acquisition module is used to acquire a first welding path that matches the weldment properties of the aluminum weldment, and to acquire a second welding path according to the target welding parameters and the first welding path. The target welding path includes the first welding path and the second welding path. The first welding path is used to weld the aluminum weldment, and the second welding path is used to control the welding stress generated by the first welding path on the aluminum weldment.
[0032] A welding module is used to weld the aluminum workpiece to the workpiece to be welded according to the target welding parameters and the target welding path.
[0033] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided, wherein a computer program is stored in the computer program, which is configured to execute the above-described welding method for aluminum weldments when running.
[0034] According to another aspect of the embodiments of this application, an electronic device is also provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the above-described welding method for aluminum weldments through the computer program.
[0035] In this embodiment, target welding parameters corresponding to the aluminum workpiece to be welded are obtained, wherein the target welding parameters are used to indicate a welding method that allows the welding quality of the aluminum workpiece to be greater than or equal to the target welding quality; a first welding path matching the workpiece properties of the aluminum workpiece is obtained, and a second welding path is obtained according to the target welding parameters and the first welding path, wherein the target welding path includes the first welding path and the second welding path, the first welding path is used to weld the aluminum workpiece, and the second welding path is used to control the welding stress generated on the aluminum workpiece by the first welding path; using the target welding parameters, the aluminum workpiece is welded to the workpiece to be welded according to the target welding path, that is, obtaining the welding parameters used to indicate the allowable welding quality of the aluminum workpiece to be welded. The method involves using target welding parameters for a welding method where the welding quality of the aluminum workpiece to be welded is greater than or equal to the target welding quality. A first welding path matching the workpiece properties is obtained, and a second welding path is acquired based on the target welding parameters and the first welding path to control the welding stress generated by the first welding path on the aluminum workpiece. Using the target welding parameters, the aluminum workpiece is welded to the workpiece via the first welding path, and the welding stress generated by the first welding path is controlled via the second welding path. This reduces quality problems such as cracks and fissures caused by welding stress, lowers the difficulty of achieving the target welding quality for the aluminum workpiece, and improves the overall welding quality. This technical solution solves the problem of poor welding quality of aluminum workpieces in related technologies, achieving the technical effect of improving the welding quality of aluminum workpieces. Attached Figure Description
[0036] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0038] Figure 1 This is a schematic diagram of the hardware environment for a welding method for an aluminum weldment according to an embodiment of this application;
[0039] Figure 2 This is a flowchart of a welding method for an aluminum weldment according to an embodiment of this application;
[0040] Figure 3 This is a schematic diagram of the optional first and second laser spot shapes according to embodiments of this application;
[0041] Figure 4 This is a schematic diagram of the energy distribution of an optional first laser and a second laser according to an embodiment of this application;
[0042] Figure 5 This is a schematic diagram of a welding method for an aluminum workpiece according to an embodiment of this application. Figure 1 ;
[0043] Figure 6 This is a schematic diagram of a welding method for an aluminum workpiece according to an embodiment of this application. Figure 2 ;
[0044] Figure 7 This is a structural block diagram of a welding apparatus for aluminum weldments according to an embodiment of this application. Detailed Implementation
[0045] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0046] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application 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 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.
[0047] The methods and embodiments provided in this application can be executed on a computer terminal, device terminal, or similar computing device. Taking running on a computer terminal as an example, Figure 1 This is a schematic diagram of the hardware environment for a welding method for aluminum weldments according to an embodiment of this application. For example... Figure 1 As shown, a computer terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. In one exemplary embodiment, the computer terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the computer terminal described above. For example, the computer terminal may also include components that are more complex than those described above. Figure 1 The more or fewer components shown, or having the same Figure 1 Equivalent functions or ratios shown Figure 1 The functions shown have more different configurations.
[0048] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the welding method for aluminum weldments in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer programs stored in the memory 104, thereby implementing the aforementioned method. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to a computer terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
[0049] The transmission device 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider for the computer terminal. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 may be a Radio Frequency (RF) module used for wireless communication with the Internet.
[0050] This embodiment provides a welding method for aluminum components, applied to the aforementioned computer terminal. Figure 2 This is a flowchart of a welding method for an aluminum weldment according to an embodiment of this application, such as... Figure 2 As shown, the process includes the following steps:
[0051] Step S202: Obtain the target welding parameters corresponding to the aluminum workpiece to be welded, wherein the target welding parameters are used to indicate the welding method that allows the welding quality of the aluminum workpiece to be greater than or equal to the target welding quality;
[0052] Step S204: Obtain a first welding path that matches the weldment properties of the aluminum weldment, and obtain a second welding path according to the target welding parameters and the first welding path. The target welding path includes the first welding path and the second welding path. The first welding path is used to weld the aluminum weldment, and the second welding path is used to control the welding stress generated by the first welding path on the aluminum weldment.
[0053] Step S206: Using the target welding parameters, weld the aluminum workpiece to the workpiece to be welded according to the target welding path.
[0054] Through the above steps, target welding parameters are obtained to indicate the welding method that allows the welding quality of the aluminum workpiece to be welded to be greater than or equal to the target welding quality; a first welding path matching the workpiece properties of the aluminum workpiece is obtained, and a second welding path is obtained based on the target welding parameters and the first welding path to control the welding stress generated by the first welding path on the aluminum workpiece; using the target welding parameters, the aluminum workpiece is welded to the workpiece through the first welding path, and the welding stress generated by the first welding path on the aluminum workpiece is controlled by the second welding path, reducing quality problems such as cracks and fissures caused by welding stress, lowering the difficulty of achieving the target welding quality for the aluminum workpiece, and improving the welding quality of the aluminum workpiece. By adopting the above technical solution, the problem of poor welding quality of aluminum workpieces in related technologies is solved, achieving the technical effect of improving the welding quality of aluminum workpieces.
[0055] In the technical solution provided in step S202 above, the target welding parameters may be, but are not limited to, a welding method that allows the welding quality of the aluminum workpiece to be welded to be greater than or equal to the target welding quality. The target welding quality may be, but is not limited to, a welding quality that indicates the porosity, cracks, and surface finish of the aluminum workpiece after welding, etc., to meet the actual production welding quality requirements.
[0056] Optionally, in this embodiment, the aluminum weldment may be, but is not limited to, a pure aluminum weldment containing only aluminum, or an aluminum alloy weldment containing aluminum, etc. The aluminum weldment to be welded may be welded by a welding method that allows the welding quality of the aluminum weldment to be greater than or equal to the target welding quality, thereby reducing defects such as spatter, pores, and incomplete welds generated during the welding process and improving the welding quality.
[0057] In the technical solution provided in step S204 above, a first welding path matching the properties of the aluminum weldment can be obtained, and a second welding path for controlling the welding stress generated by the first welding path on the aluminum weldment can be obtained according to the target welding parameters and the first welding path. While welding the aluminum weldment through the first welding path, the welding stress generated during the welding process is reduced through the second welding path, thereby reducing quality problems such as weldment bursting and cracking caused by welding stress and improving the quality of the welded product.
[0058] In one exemplary embodiment, the first welding path may be obtained, but is not limited to, by: obtaining first path parameters that match the properties of the weldment, wherein the first path parameters include: helix inner diameter, helix outer diameter, and helix spacing; and creating a helix path that satisfies the first path parameters as the first welding path.
[0059] Optionally, in this embodiment, a spiral path that satisfies the spiral inner diameter, spiral outer diameter, and spiral spacing included in the first path parameters can be created as the first welding path, thereby enabling the welding of aluminum workpieces through the spiral path and ensuring welding strength.
[0060] In one exemplary embodiment, the second welding path may be obtained, but is not limited to, by: obtaining a target welding speed from the target welding parameters, wherein the target welding speed is used to indicate the speed at which the aluminum workpiece is welded; if the target welding speed is greater than or equal to a welding speed threshold, obtaining a second path parameter that matches the first path parameter, wherein the second path parameter includes: multiple sets of arc diameters and center angles with corresponding relationships; creating arc paths that satisfy each set of arc diameters and center angles with corresponding relationships to obtain multiple arc paths as the second welding path, wherein the multiple arc paths are evenly distributed outside the spiral path, and the center of each arc path coincides with the center of the inner diameter of the spiral path.
[0061] Optionally, in this embodiment, a multi-segment arc path that satisfies the corresponding arc diameter and center angle of each group can be used as the second welding path. The multi-segment arc paths are evenly distributed on the outside of the spiral path, and the center of each arc path coincides with the center of the inner diameter of the spiral. This greatly reduces the welding stress caused by the spiral path when welding aluminum parts at a relatively fast welding speed, thereby greatly reducing quality problems such as welding cracks and incomplete welding of transition pieces, improving the welding efficiency of aluminum parts, and greatly reducing the need for post-processing work, thereby reducing the overall production cost and ensuring production quality.
[0062] Optionally, in this embodiment, when the target welding speed is less than the welding speed threshold, the aluminum workpiece can be welded directly using the first welding path without obtaining the second welding path. When the target welding speed is greater than or equal to the welding speed threshold, the second welding path is obtained. This can ensure the welding quality of the aluminum workpiece while using a faster welding speed, and significantly improve the welding efficiency of the aluminum workpiece. Compared with the welding speed of 200 mm / s in the prior art, the welding speed of the beam-tunable laser of this application can reach 370 mm / s.
[0063] Optionally, in this embodiment, the arc diameter and center angle of each arc path can be, but are not limited to, completely identical, partially identical, or completely different, etc., thereby realizing the creation of multi-segment arc paths with corresponding arc diameters and center angles that meet production needs according to the actual welding speed during production.
[0064] In one exemplary embodiment, the second path parameters may be obtained, but are not limited to, by: predicting the target welding stress generated on the aluminum workpiece by a welding path that satisfies the first path parameters; generating the plurality of corresponding arc diameters and center angles corresponding to the target welding stress as the second path parameters, wherein the plurality of corresponding arc diameters and center angles are used to indicate welding paths that allow the target welding stress to be reduced to the target stress range.
[0065] Optionally, in this embodiment, a second path parameter can be generated to control the welding stress to meet the quality requirements of actual production by predicting the welding stress generated on the aluminum weldment by the helical path.
[0066] In the technical solution provided in step S206 above, the aluminum welding parts can be welded to the welded parts according to the first welding path and the second welding path, but not limited to the target welding parameters. This effectively reduces defects such as spatter, bursts, incomplete welds, cracks, and poor forming in the welding process of the aluminum welding parts, improves the welding quality of the aluminum welding parts, and can effectively increase the flow area of the aluminum welding parts.
[0067] In one exemplary embodiment, an aluminum workpiece can be welded to a workpiece by, but is not limited to, the following methods: obtaining a first welding power and a second welding power carried in target welding parameters; generating a first laser having the first welding power and a second laser having the second welding power; controlling the first laser to weld the aluminum workpiece to the workpiece sequentially along the first welding path and the second welding path according to the target welding speed carried in the target welding parameters, and controlling the temperature of the aluminum workpiece by the second laser during the welding process.
[0068] Optionally, in this embodiment, the first welding power of the first laser and the second welding power of the second laser can be, but are not limited to, independently adjustable. The first laser can be, but is not limited to, used to weld the aluminum workpiece to the workpiece being welded, and the second laser can be, but is not limited to, used to lower or raise the temperature of the aluminum workpiece during the welding process, or to maintain a constant temperature of the aluminum workpiece, etc., to prevent the outermost spiral from forming welding cracks due to excessive cooling. For example, during the welding process, if the temperature of the aluminum workpiece exceeds the temperature suitable for welding and ensuring welding quality, the temperature of the aluminum workpiece can be lowered, but is not limited to, by lowering the second welding power of the second laser; or, for example, during the welding process, if the temperature of the aluminum workpiece has not yet reached the temperature suitable for welding and ensuring welding quality, the temperature of the aluminum workpiece can be raised, but is not limited to, by increasing the second welding power of the second laser, etc.
[0069] Figure 3 This is a schematic diagram of the optional first and second laser spot shapes according to embodiments of this application, such as... Figure 3 As shown, the shape of the second laser spot can be, but is not limited to, an annular spot, etc., and the shape of the first laser spot can be, but is not limited to, a circular spot, etc. Figure 4 This is a schematic diagram of the energy distribution of an optional first laser and a second laser according to an embodiment of this application, such as... Figure 4 As shown, the power density of the first laser can be, but is not limited to, higher than that of the second laser, which helps to achieve spatter-free and stable processing of aluminum weldments, greatly reducing porosity, minimizing cracks, and significantly improving the welding quality of aluminum weldments.
[0070] Optionally, in this embodiment, the power range of the first welding power may include, but is not limited to, greater than or equal to 0W and less than or equal to 4000W, and the power range of the second welding power may include, but is not limited to, greater than or equal to 0W and less than or equal to 2000W, as well as other power ranges of the first and second welding powers that meet actual production needs. This application does not impose any restrictions on these ranges.
[0071] In one exemplary embodiment, an aluminum workpiece may be welded to a workpiece by, but is not limited to, the following: controlling the second laser to preheat the aluminum workpiece; when the preheating temperature reaches a target temperature, controlling the first laser to start welding the aluminum workpiece to the workpiece along the first welding path and the second welding path in sequence at the target welding speed; and controlling the second welding power of the second laser during the process of controlling the first laser to weld the aluminum workpiece.
[0072] Optionally, in this embodiment, before welding, the aluminum workpiece to be welded can be preheated by the second laser, but not limited to, when the temperature of the aluminum workpiece reaches the target temperature. When the temperature of the aluminum workpiece reaches the target temperature, the first laser is controlled to start welding the aluminum workpiece to the workpiece along the first welding path and the second welding path in sequence at the target welding speed. This reduces quality problems such as bubbles caused by the rapid temperature drop during the welding process, resulting in better consistency in weld penetration and weld width, more aesthetically pleasing shape, and improved welding quality of the aluminum workpiece.
[0073] In one exemplary embodiment, an aluminum weldment can be welded to a workpiece by, but is not limited to, the following method: obtaining a power battery as the workpiece; using the target welding parameters, welding an aluminum adapter piece to the power battery according to the target welding path, wherein the aluminum weldment includes the aluminum adapter piece.
[0074] Optionally, in this embodiment, the aluminum adapter piece can be welded to the power battery as an aluminum welding component to be welded, which can effectively increase the current-carrying area of the adapter piece and improve the performance of the power battery.
[0075] To better understand the above-described process of welding aluminum components, the welding flow of the aluminum components will be further described below with reference to optional embodiments, but this is not intended to limit the technical solutions of the embodiments of this application.
[0076] This embodiment provides a welding method for aluminum components. Figure 5 This is a schematic diagram of a welding method for an aluminum workpiece according to an embodiment of this application. Figure 1 ,like Figure 5As shown, this method can be applied, but is not limited to, welding speeds greater than or equal to 0 mm / s and less than or equal to 250 mm / s, and mainly includes the following steps:
[0077] Step S501: Wipe the mating surfaces of the adapter plate and the cover plate clean with industrial alcohol, and use a clamp to press the aluminum adapter plate and the cover plate together.
[0078] Step S502: Adjust the distance between the welding head and the adapter plate so that the laser focus falls on the aluminum adapter plate at a position of 1mm;
[0079] Step S503: Set the core power (i.e., the first welding power mentioned above) and the outer ring power (i.e., the second welding power mentioned above) of the laser: The core power of the laser (wavelength may be, but is not limited to, 1080nm) may be set to greater than or equal to 2200W and less than or equal to 2400W, and the outer ring power may be set to greater than or equal to 1000W and less than or equal to 1200W.
[0080] Step S504: Set the spiral parameters (i.e., the first path parameters mentioned above) that match the properties of the aluminum adapter piece. The spiral parameters can be set in the galvanometer software, but are not limited to: spiral inner diameter greater than or equal to 0.4 mm and less than or equal to 0.6 mm, spiral outer diameter greater than or equal to 4.5 mm and less than or equal to 5 mm, and spiral spacing greater than or equal to 0.5 mm and less than or equal to 0.6 mm.
[0081] Step S505: Set the welding speed and add shielding gas. After confirming the welding position, the welding speed can be set to 250 mm / s, but is not limited to, and shielding gas can be added. The shielding gas can be, but is not limited to, argon or other shielding gases.
[0082] Step S506: Using a high-power galvanometer welding head, weld the aluminum adapter piece along a spiral path. The collimating lens focal length of the high-power galvanometer welding head can be, but is not limited to, 150mm, and the focusing lens focal length can be, but is not limited to, 460mm. Use a welding speed of 250mm / s to weld the aluminum adapter piece along a spiral path.
[0083] Step S507: Welding completed. Inspect the welding condition of the aluminum adapter plate surface. There should be no spatter, no bursts, the weld should be continuous, and the shape should be aesthetically pleasing.
[0084] Figure 6 This is a schematic diagram of a welding method for an aluminum workpiece according to an embodiment of this application. Figure 2 ,like Figure 6As shown, this method can be applied, but is not limited to, welding speeds greater than 250 mm / s and less than or equal to 400 mm / s, using a spiral (i.e., the first welding path mentioned above) and multiple arcs (i.e., the second welding path mentioned above), and mainly includes the following steps:
[0085] Step S601: Press the adapter plate and the cover plate together. You can, but are not limited to, wipe the mating surfaces of the adapter plate and the cover plate clean with industrial alcohol and use a clamp to press the adapter plate and the cover plate together.
[0086] Step S602: Adjust the distance between the welding head and the adapter plate so that the laser focus falls on the aluminum adapter plate at a position of 1mm;
[0087] Step S603: Set the core power (i.e., the first welding power mentioned above) and the outer ring power (i.e., the second welding power mentioned above) of the laser power. The laser power (wavelength may be, but is not limited to, 1080nm) can be set as follows: the core power (i.e., the first welding power mentioned above) is greater than or equal to 3500W and less than or equal to 3700W, and the outer ring power (i.e., the second welding power mentioned above) is greater than or equal to 1400W and less than or equal to 1600W.
[0088] Step S604: Set the spiral parameters (i.e., the first path parameters mentioned above) that match the properties of the aluminum adapter piece; the spiral parameters (i.e., the first path parameters mentioned above) that match the properties of the aluminum adapter piece can be set in the galvanometer software, but are not limited to: the inner diameter of the spiral is greater than or equal to 0.4 mm and less than or equal to 0.6 mm, the outer diameter of the spiral is greater than or equal to 4.5 mm and less than or equal to 5 mm, and the spiral spacing is greater than or equal to 0.5 mm and less than or equal to 0.6 mm;
[0089] Step S605: Set multiple arc parameters (i.e., the second path parameters mentioned above) according to the helix parameters. Three (or six, etc., this application does not limit) arc parameters (i.e., the second path parameters mentioned above) can be set on the galvanometer software: the diameter can be greater than or equal to 6 mm and less than or equal to 6.5 mm, the center angle can be greater than or equal to 80°, the three arcs are evenly distributed around the helix, and the center of the inner diameter of the helix of the three arcs coincides.
[0090] Step S606: After confirming the welding position, the welding speed can be set to 370 mm / s, but is not limited to, and a shielding gas can be added. The shielding gas can be, but is not limited to, argon.
[0091] Step S607: Using a high-power galvanometer welding head, weld the aluminum adapter piece to the power battery sequentially along a spiral path and a three-segment arc path. The focal length of the collimating lens can be, but is not limited to, 150mm, and the focal length of the focusing lens can be, but is not limited to, 460mm. Weld the aluminum adapter piece to the power battery sequentially along a spiral path and a three-segment arc path at a welding speed of 370mm / s.
[0092] Step S608: Welding completed. Check the welding status of the aluminum adapter plate surface. There should be no spatter, no bursts, continuous welds, and a neat appearance.
[0093] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of this application.
[0094] Figure 7 This is a structural block diagram of a welding apparatus for aluminum weldments according to an embodiment of this application; as shown... Figure 7 As shown, it includes:
[0095] The first acquisition module 702 is used to acquire the target welding parameters corresponding to the aluminum workpiece to be welded, wherein the target welding parameters are used to indicate the welding method that allows the welding quality of the aluminum workpiece to be greater than or equal to the target welding quality;
[0096] The second acquisition module 704 is used to acquire a first welding path that matches the weldment properties of the aluminum weldment, and to acquire a second welding path according to the target welding parameters and the first welding path. The target welding path includes the first welding path and the second welding path. The first welding path is used to weld the aluminum weldment, and the second welding path is used to control the welding stress generated by the first welding path on the aluminum weldment.
[0097] Welding module 706 is used to weld the aluminum workpiece to the workpiece to be welded according to the target welding parameters and the target welding path.
[0098] Through the above embodiments, target welding parameters are obtained to indicate a welding method that allows the welding quality of the aluminum workpiece to be welded to be greater than or equal to the target welding quality; a first welding path matching the workpiece properties of the aluminum workpiece is obtained, and a second welding path is obtained based on the target welding parameters and the first welding path to control the welding stress generated by the first welding path on the aluminum workpiece; using the target welding parameters, the aluminum workpiece is welded to the workpiece through the first welding path, and the welding stress generated by the first welding path on the aluminum workpiece is controlled by the second welding path, reducing quality problems such as cracks and fissures caused by welding stress, reducing the difficulty of achieving the target welding quality for the aluminum workpiece, and improving the welding quality of the aluminum workpiece. By adopting the above technical solution, the problem of poor welding quality of aluminum workpieces in related technologies is solved, achieving the technical effect of improving the welding quality of aluminum workpieces.
[0099] In one exemplary embodiment, the second acquisition module includes:
[0100] The first acquisition unit is used to acquire a first path parameter that matches the properties of the weldment, wherein the first path parameter includes: the inner diameter of the helix, the outer diameter of the helix, and the spacing between the helixes;
[0101] The first creation unit is used to create a spiral path that satisfies the first path parameters as the first welding path.
[0102] In one exemplary embodiment, the second acquisition module includes:
[0103] The second acquisition unit is used to acquire a target welding speed from the target welding parameters, wherein the target welding speed is used to indicate the speed at which the aluminum workpiece is welded;
[0104] The third acquisition unit is used to acquire a second path parameter that matches the first path parameter when the target welding speed is greater than or equal to the welding speed threshold. The second path parameter includes multiple sets of arc diameters and center angles that have a corresponding relationship.
[0105] The second creation unit is used to create arc paths that satisfy the corresponding arc diameter and center angle of each group, and obtain multiple arc paths as the second welding path. The multiple arc paths are evenly distributed outside the spiral path, and the center of each arc path coincides with the center of the inner diameter of the spiral path.
[0106] In one exemplary embodiment, the third acquisition unit is configured to:
[0107] Predict the target welding stress generated on the aluminum workpiece by the welding path that satisfies the first path parameters;
[0108] Generate the multiple sets of corresponding arc diameters and center angles corresponding to the target welding stress as the second path parameters, wherein the multiple sets of corresponding arc diameters and center angles are used to indicate the welding path that allows the target welding stress to be reduced to the target stress range.
[0109] In one exemplary embodiment, the welding module includes:
[0110] The fourth acquisition unit is used to acquire the first welding power and the second welding power carried in the target welding parameters;
[0111] A generation unit is configured to generate a first laser having the first welding power and a second laser having the second welding power;
[0112] The first welding unit is used to control the first laser to weld the aluminum workpiece to the workpiece along the first welding path and the second welding path in sequence according to the target welding speed carried in the target welding parameters, and to control the temperature of the aluminum workpiece through the second laser during the welding process.
[0113] In an exemplary embodiment, the first welding unit is configured to:
[0114] The second laser is controlled to preheat the aluminum weldment;
[0115] When the preheating temperature reaches the target temperature, the first laser is controlled to start welding the aluminum workpiece to the workpiece to be welded along the first welding path and the second welding path in sequence at the target welding speed.
[0116] The second welding power of the second laser is controlled during the process of controlling the first laser to weld the aluminum workpiece.
[0117] In one exemplary embodiment, the welding module includes:
[0118] The fifth acquisition unit is used to acquire the power battery as the weldment to be welded;
[0119] The second welding unit is used to weld the aluminum adapter piece to the power battery according to the target welding parameters and the target welding path, wherein the aluminum weldment includes the aluminum adapter piece.
[0120] Embodiments of this application also provide a storage medium including a stored program, wherein the program executes any of the methods described above when it is run.
[0121] Optionally, in this embodiment, the storage medium may be configured to store program code for performing the following steps:
[0122] S1, obtain the target welding parameters corresponding to the aluminum workpiece to be welded, wherein the target welding parameters are used to indicate the welding method that allows the welding quality of the aluminum workpiece to be greater than or equal to the target welding quality;
[0123] S2, obtain a first welding path that matches the weldment properties of the aluminum weldment, and obtain a second welding path according to the target welding parameters and the first welding path, wherein the target welding path includes the first welding path and the second welding path, the first welding path is used to weld the aluminum weldment, and the second welding path is used to control the welding stress generated by the first welding path on the aluminum weldment.
[0124] S3, using the target welding parameters, weld the aluminum workpiece to the workpiece to be welded according to the target welding path.
[0125] Embodiments of this application also provide an electronic device including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.
[0126] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.
[0127] Optionally, in this embodiment, the processor can be configured to perform the following steps via a computer program:
[0128] S1, obtain the target welding parameters corresponding to the aluminum workpiece to be welded, wherein the target welding parameters are used to indicate the welding method that allows the welding quality of the aluminum workpiece to be greater than or equal to the target welding quality;
[0129] S2, obtain a first welding path that matches the weldment properties of the aluminum weldment, and obtain a second welding path according to the target welding parameters and the first welding path, wherein the target welding path includes the first welding path and the second welding path, the first welding path is used to weld the aluminum weldment, and the second welding path is used to control the welding stress generated by the first welding path on the aluminum weldment.
[0130] S3, using the target welding parameters, weld the aluminum workpiece to the workpiece to be welded according to the target welding path.
[0131] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.
[0132] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.
[0133] Obviously, those skilled in the art should understand that the modules or steps of this application described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby storing them in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented here, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, this application is not limited to any particular combination of hardware and software.
[0134] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.
Claims
1. A method of welding an aluminum weldment, characterized by, include: Obtain the target welding parameters corresponding to the aluminum workpiece to be welded, wherein the target welding parameters are used to indicate the welding method that allows the welding quality of the aluminum workpiece to be greater than or equal to the target welding quality; A first welding path matching the weldment properties of the aluminum weldment is obtained, and a second welding path is obtained according to the target welding parameters and the first welding path. The target welding path includes the first welding path and the second welding path. The first welding path is used to weld the aluminum weldment, and the second welding path is used to control the welding stress generated by the first welding path on the aluminum weldment. Using the target welding parameters and following the target welding path, the aluminum workpiece is welded to the workpiece to be welded; The step of obtaining a first welding path that matches the weldment properties of the aluminum weldment includes: obtaining a first path parameter that matches the weldment properties, wherein the first path parameter includes: inner diameter of the helix, outer diameter of the helix, and helix spacing; and creating a helix path that satisfies the first path parameter as the first welding path. The step of obtaining a second welding path based on the target welding parameters and the first welding path includes: obtaining a target welding speed from the target welding parameters, wherein the target welding speed is used to indicate the speed of welding the aluminum workpiece; if the target welding speed is greater than or equal to a welding speed threshold, obtaining a second path parameter matching the first path parameter, wherein the second path parameter includes: multiple sets of arc diameters and center angles with corresponding relationships; creating arc paths that satisfy each set of arc diameters and center angles with corresponding relationships, obtaining multiple arc paths as the second welding path, wherein the multiple arc paths are evenly distributed outside the spiral path, and the center of each arc path coincides with the center of the inner diameter of the spiral path.
2. The method of claim 1, wherein, The step of obtaining the second path parameter that matches the first path parameter includes: Predict the target welding stress generated on the aluminum workpiece by the welding path that satisfies the first path parameters; Generate the multiple sets of corresponding arc diameters and center angles corresponding to the target welding stress as the second path parameters, wherein the multiple sets of corresponding arc diameters and center angles are used to indicate the welding path that allows the target welding stress to be reduced to the target stress range.
3. The method of claim 1, wherein, The step of welding the aluminum workpiece to the workpiece to be welded using the target welding parameters and according to the target welding path includes: Obtain the first welding power and the second welding power carried in the target welding parameters; A first laser with the first welding power and a second laser with the second welding power are generated; The first laser is controlled to weld the aluminum workpiece to the workpiece along the first welding path and the second welding path in sequence according to the target welding speed carried in the target welding parameters, and the temperature of the aluminum workpiece is controlled by the second laser during the welding process.
4. The method of claim 3, wherein, The method of controlling the first laser to weld the aluminum workpiece to the workpiece along the first welding path and the second welding path sequentially according to the target welding speed carried in the target welding parameters, and controlling the temperature of the aluminum workpiece through the second laser during the welding process, includes: The second laser is controlled to preheat the aluminum weldment; When the preheating temperature reaches the target temperature, the first laser is controlled to start welding the aluminum workpiece to the workpiece to be welded along the first welding path and the second welding path in sequence at the target welding speed. The second welding power of the second laser is controlled during the process of controlling the first laser to weld the aluminum workpiece.
5. The method according to any one of claims 1 to 4, characterized in that, The step of welding the aluminum workpiece to the workpiece to be welded using the target welding parameters and according to the target welding path includes: Obtain the power battery as the weldment to be welded; Using the target welding parameters and following the target welding path, the aluminum adapter piece is welded to the power battery, wherein the aluminum weldment includes the aluminum adapter piece.
6. A welding apparatus for welding an aluminum workpiece, characterized by comprising: include: The first acquisition module is used to acquire the target welding parameters corresponding to the aluminum workpiece to be welded, wherein the target welding parameters are used to indicate the welding method that allows the welding quality of the aluminum workpiece to be greater than or equal to the target welding quality; The second acquisition module is used to acquire a first welding path that matches the weldment properties of the aluminum weldment, and to acquire a second welding path according to the target welding parameters and the first welding path. The target welding path includes the first welding path and the second welding path. The first welding path is used to weld the aluminum weldment, and the second welding path is used to control the welding stress generated by the first welding path on the aluminum weldment. A welding module is used to weld the aluminum workpiece to the workpiece to be welded according to the target welding parameters and the target welding path; The second acquisition module includes: a first acquisition unit, used to acquire a first path parameter matching the properties of the weldment, wherein the first path parameter includes: inner diameter of the helix, outer diameter of the helix, and spacing between the helixes; and a first creation unit, used to create a helix path that satisfies the first path parameter as the first welding path. The second acquisition module further includes: a second acquisition unit, configured to acquire a target welding speed from the target welding parameters, wherein the target welding speed is used to indicate the speed of welding the aluminum workpiece; a third acquisition unit, configured to acquire second path parameters matching the first path parameters when the target welding speed is greater than or equal to a welding speed threshold, wherein the second path parameters include: multiple sets of arc diameters and center angles with corresponding relationships; and a second creation unit, configured to create arc paths that satisfy each set of arc diameters and center angles with corresponding relationships, thereby obtaining multiple arc paths as the second welding path, wherein the multiple arc paths are evenly distributed outside the spiral path, and the center of each arc path coincides with the center of the inner diameter of the spiral path.
7. A computer readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein the program, when executed, performs the method of any one of claims 1 to 5. 8.An electronic device comprising a memory and a processor, the electronic device comprising: The memory stores a computer program, and the processor is configured to execute the method of any one of claims 1 to 5 through the computer program.
Citation Information
Patent Citations
Laser welding device, laser welding equipment and laser welding method
CN114523207A