Additive and subtractive composite manufacturing method, apparatus, and assembly, and computer storage medium

Abstract

An additive and subtractive composite manufacturing method, comprising: step S11: turning on a combined laser, and, by means of adjusting a light spot size of the combined laser and a preset power of a Gaussian laser, carrying out scanning-based heating and printing-based forming on powder laid on a forming cylinder surface, the combined laser comprising a continuous annular laser and the continuous Gaussian laser; step S12, turning off the combined laser, and turning on a pulsed laser; and step S13, performing cutting processing on the contour of the forming surface by means of the pulsed laser to obtain a prepared part. According to the method, multi-laser composite manufacturing is achieved, and the efficiency of powder bed molten additive manufacturing is improved. The present invention further relates to an additive and subtractive composite manufacturing apparatus (300, 400), an additive and subtractive composite manufacturing assembly, and a computer storage medium.

Description

Additive and subtractive composite manufacturing method, device, component and computer storage medium

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 1, 2024, with application number 202410239487.2, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of laser additive manufacturing technology, for example, to an additive-subtractive composite manufacturing method, an additive-subtractive composite manufacturing device, an additive-subtractive composite manufacturing component, and a computer storage medium. Background Art

[0003] Laser powder bed fusion additive manufacturing (AM) technology has been widely used in industries such as industry and aerospace. However, as the demand for increasingly complex, refined, and high-precision parts continues to rise, single AM ​​processes are no longer sufficient. Multi-laser composite manufacturing is playing an increasingly important role. Summary of the Invention

[0004] The present application provides an additive-subtractive composite manufacturing method, an additive-subtractive composite manufacturing device, an additive-subtractive composite manufacturing component, and a computer storage medium.

[0005] The present application provides an additive and subtractive composite manufacturing method, which comprises:

[0006] Turning on the combined laser, scanning, heating, and printing the powder on the surface of the forming cylinder by adjusting the spot size of the combined laser and the preset power of the continuous Gaussian laser, wherein the combined laser includes a continuous ring laser and a continuous Gaussian laser;

[0007] Turn off the combined laser and turn on the pulse laser;

[0008] The pulse laser is used to cut the contour of the forming surface to obtain a prepared part.

[0009] The combined laser is turned on, and the powder covered on the surface of the forming cylinder is scanned, heated, and printed by adjusting the spot size of the combined laser and the preset power of the continuous Gaussian laser. The process includes:

[0010] Turning on a continuous ring laser to scan and heat the powder covering the surface of the forming cylinder by the continuous ring laser;

[0011] After a preset condition is reached, the continuous ring laser is turned off;

[0012] The continuous ring laser and the continuous Gaussian laser are turned on, and the powder covered on the surface of the forming cylinder is printed and formed by adjusting the spot size of the continuous ring laser and the preset power of the continuous Gaussian laser.

[0013] The preset conditions are that the heating time reaches a preset time, and / or the powder temperature reaches a preset temperature.

[0014] The ring beam size of the continuous ring laser in the scanning and heating stage is larger than the ring beam size in the printing and forming stage.

[0015] Wherein, after turning off the combined laser and before turning on the pulse laser, the additive and subtractive composite manufacturing method further includes:

[0016] The continuous ring laser is turned on to scan and heat the forming surface.

[0017] The step of scanning, heating, and printing the powder on the surface of the forming cylinder by adjusting the preset power of the continuous Gaussian laser comprises:

[0018] According to the preparation requirements of the parts, the output power ratio of the combined laser is selected, wherein the output power ratio is the ratio of the Gaussian laser power to the ring laser power;

[0019] The powder covering the surface of the forming cylinder is printed and formed by the combined laser according to the output power ratio.

[0020] The step of printing and forming the powder coated on the surface of the forming cylinder by the combined laser according to the output power ratio includes:

[0021] A combination of lasers with different output power ratios is used for different powder areas to print and shape the powder covered on the surface of the forming cylinder.

[0022] The present application also provides an additive and subtractive composite manufacturing device, which includes: a printing and forming module, a mode switching module and a cutting processing module; wherein,

[0023] The printing and forming module is configured to start a combined laser and perform scanning, heating, and printing on the powder covering the surface of the forming cylinder by adjusting the spot size of the combined laser and the preset power of the continuous Gaussian laser, wherein the combined laser includes a continuous ring laser and a continuous Gaussian laser;

[0024] The mode switching module is configured to turn off the combined laser and turn on the pulse laser;

[0025] The cutting processing module is configured to cut the contour of the forming surface using the pulse laser to obtain a prepared part.

[0026] The present application also provides an additive and subtractive composite manufacturing assembly, the additive and subtractive composite manufacturing assembly comprising an integrated laser, a beam expander, a focus device, and a galvanometer mirror connected in sequence via an output optical fiber;

[0027] The integrated laser includes a coupler and a continuous ring laser module, a continuous Gaussian laser module and a picosecond ultrafast laser module connected in parallel; the continuous ring laser module, the continuous Gaussian laser module and the picosecond ultrafast laser module are combined by a coupler, and the integrated laser is configured to implement the above-mentioned additive and subtractive composite manufacturing method.

[0028] The present application also provides an additive and subtractive composite manufacturing device, which includes a memory and a processor coupled to the memory; wherein the memory is configured to store program data, and the processor is configured to execute the program data to implement the additive and subtractive composite manufacturing method as described above.

[0029] The present application also provides a computer storage medium, which is configured to store program data. When the program data is executed by a computer, it is used to implement the above-mentioned additive and subtractive composite manufacturing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic flow chart of an embodiment of an additive and subtractive composite manufacturing method provided by the present application;

[0031] FIG2 is a schematic diagram of the overall process of the additive and subtractive composite manufacturing method provided by the present application;

[0032] FIG3 is a schematic structural diagram of an embodiment of an additive and subtractive composite manufacturing assembly provided by the present application;

[0033] FIG4 is a schematic flow chart of another embodiment of the additive and subtractive composite manufacturing method provided by the present application;

[0034] FIG5 is a schematic flow chart of step S11 of the additive and subtractive composite manufacturing method shown in FIG1 ;

[0035] FIG6 is a schematic structural diagram of an embodiment of an additive and subtractive composite manufacturing device provided by the present application;

[0036] FIG7 is a schematic structural diagram of another embodiment of the additive and subtractive composite manufacturing device provided by the present application;

[0037] FIG8 is a schematic structural diagram of an embodiment of a computer storage medium provided by the present application. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. The described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0039] The terms "first," "second," "third," "fourth," etc. (if any) in the specification and claims of the present application and in the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential sequence. The numbers used in this way are interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or apparatus.

[0040] This application addresses multi-laser composite manufacturing, a combined manufacturing process that utilizes multiple laser output modes, each performing its own function in an orderly combination and conversion state. This addresses the issues that single-material additive manufacturing can bring, such as high surface roughness, low dimensional accuracy, and high residual stress. This application innovatively integrates the functions of multiple laser manufacturing processes to form a complete solution for powder bed additive / subtractive manufacturing.

[0041] Please refer to Figures 1, 2 and 3. Figure 1 is a flow chart of an embodiment of the additive and subtractive composite manufacturing method provided in the present application, Figure 2 is an overall flow chart of the additive and subtractive composite manufacturing method provided in the present application, and Figure 3 is a structural diagram of an embodiment of the additive and subtractive composite manufacturing component provided in the present application.

[0042] The additive and subtractive composite manufacturing method of the present application is applied to an additive and subtractive composite manufacturing device, wherein the additive and subtractive composite manufacturing device of the present application can be a server, a terminal device, or a system composed of a server and a terminal device. Accordingly, the multiple parts of the additive and subtractive composite manufacturing device, such as multiple units, subunits, modules, and submodules, can all be provided in the server, all be provided in the terminal device, or be provided separately in the server and the terminal device.

[0043] The server can be either hardware or software. If the server is hardware, it can be implemented as a distributed server cluster consisting of multiple servers, or as a single server. If the server is software, it can be implemented as multiple software programs or software modules, such as software or software modules used to provide a distributed server, or as a single software program or software module, without limitation.

[0044] As shown in FIG3 , the additive and subtractive composite manufacturing assembly used in the present application includes an integrated laser, a beam expander 5 , a focusing device 6 and a galvanometer 7 , which are sequentially connected via an output optical fiber 8 .

[0045] The integrated laser includes a coupler 4 and a parallel continuous ring laser module 1, a continuous Gaussian laser module 2, and a picosecond ultrafast laser module 3. The continuous ring laser module 1, the continuous Gaussian laser module 2, and the picosecond ultrafast laser module 3 are combined by the coupler 4. The integrated laser is configured to implement the additive and subtractive composite manufacturing method described in this application.

[0046] For example, the three lasers output by the continuous ring laser module 1, the continuous Gaussian laser module 2, and the picosecond ultrafast laser module 3 are combined by coupler 4. The three lasers are combined in coupler 4 and then coaxially output through output fiber 8, ensuring the coaxiality of the three laser outputs. The coaxiality error of the three lasers output from output fiber 8 is no greater than 0.003 mm.

[0047] The additive and subtractive composite manufacturing device of the present application implements the additive and subtractive composite manufacturing method provided by the present application according to a preset control program, and switches the mode laser output by the integrated laser through the control program, that is, using one of the continuous ring laser module 1, the continuous Gaussian laser module 2, and the picosecond ultrafast laser module 3 to output a single laser or multiple output combined lasers.

[0048] The control program controls the laser output mode, which can output continuous ring laser, combined laser formed by continuous ring laser and continuous Gaussian laser, and picosecond ultrafast laser. By controlling the output of different modes of laser and adjusting process parameters, high-quality forming and cutting processing of printed parts can be completed.

[0049] The picosecond ultrafast laser module 3 outputs an infrared wavelength of 1.03 μm, and the ultrafast laser is a picosecond pulse laser with a pulse width of 1 PS to 200 PS.

[0050] As shown in FIG1 , it includes the following steps.

[0051] Step S11: Turn on the combined laser, and scan, heat, and print the powder covered on the surface of the forming cylinder by adjusting the spot size of the combined laser and the preset power of the continuous Gaussian laser, wherein the combined laser includes a continuous ring laser and a continuous Gaussian laser.

[0052] In an embodiment of the present application, the additive and subtractive composite manufacturing device uses an integrated laser to output a combined laser during the printing and forming stage, that is, a combination of continuous ring laser and continuous Gaussian laser to print and form the powder covered on the surface of the forming cylinder.

[0053] Prior to this, the additive and subtractive composite manufacturing device can also perform a scanning and heating phase before the printing and forming phase, using the integrated laser to output a continuous ring laser to scan and heat the powder. Please refer to Figure 4, which is a schematic flow diagram of another embodiment of the additive and subtractive composite manufacturing method provided by this application.

[0054] As shown in Figure 4, the steps are as follows:

[0055] Step S21: Turn on the continuous ring laser to scan and heat the powder covering the surface of the forming cylinder through the continuous ring laser.

[0056] In an embodiment of the present application, the additive and subtractive composite manufacturing device controls the integrated laser to output continuous ring laser, wherein the continuous ring laser has the characteristics of high power and large spot, with an output power of 1000W-3800W and a spot size of 0.2㎜-0.5㎜.

[0057] A continuous ring laser can also be combined with a low-power continuous Gaussian laser (0-50W) to compensate for the energy in the center of the annular spot. The continuous ring laser passes through a galvanometer and lens, and under the control of scanning software, scans and heats the printed part area. The movement of a continuous ring laser is a combination of various strategies, allowing for both pre-scanning and heating as well as post-molding scanning and heating. The scanning heating function of the continuous laser continuously increases the surface temperature of the powder bed, reducing the temperature difference between the molten and non-molten zones during molding, thereby reducing internal stress in the printed part by increasing the temperature.

[0058] In one embodiment, the temperature and residual stress data of Ti6Al4V alloy are shown in the following table:

[0059] This application increases the forming temperature of parts on the surface of the powder bed (greater than 400°C) by outputting continuous ring laser during the scanning and heating stage, which can effectively reduce the internal stress of the printed parts and provide the necessary conditions for subsequent contour cutting and precision processing of internal structures.

[0060] Step S22: After the preset condition is met, the continuous ring laser is turned off.

[0061] Step S23: Turn on the continuous ring laser and the continuous Gaussian laser, and print and shape the powder covered on the surface of the forming cylinder by adjusting the spot size of the continuous ring laser and the preset power of the continuous Gaussian laser.

[0062] In an embodiment of the present application, the additive and subtractive composite manufacturing device determines whether the scanning and heating conditions in the scanning and heating stage meet the preset conditions. If the preset conditions are met, the continuous ring laser is turned off and the next stage, namely the printing and forming stage, is entered.

[0063] Exemplarily, the preset conditions for ending the scanning and heating stage of the present application include: preset time, preset temperature, and preset heating position. Exemplarily, the preset conditions are that the heating time reaches the preset time, and / or the powder temperature reaches the preset temperature. For example, the additive and subtractive composite manufacturing device continuously calculates the output time of the continuous ring laser until the preset time is reached, and then it can enter the printing and forming stage; the additive and subtractive composite manufacturing device detects the real-time temperature of the powder until the preset temperature is reached, and then it can enter the printing and forming stage; the additive and subtractive composite manufacturing device adjusts the output position of the continuous ring laser, controls the continuous ring laser to heat the powder covered on different areas of the surface of the forming cylinder, and enters the printing and forming stage after the continuous ring laser has heated the preset heating position. The above preset conditions can be used individually or simultaneously, that is, when used simultaneously, it can be set to enter the printing and forming stage when any one of the conditions is met, or it can be set to enter the printing and forming stage when all conditions are met.

[0064] As shown in Figure 2, the continuous ring laser provided by this application is adjusted by a two-stage fixed focus module, and the annular beam size can vary in two sections of 0.2mm-0.5mm. The two beams respectively realize rapid scanning and heating of the powder bed surface and high-efficiency printing and forming, that is, the zoom is controlled in 2 sections (annular spot size 0.5mm) during the scanning and heating stage, and the zoom is controlled in 1 section (annular spot size 0.2mm) during the printing and forming stage. By making the annular beam size of the continuous ring laser in the scanning and heating stage larger than the annular beam size in the printing and forming stage, on the one hand, a large area can be heated simultaneously during the scanning and heating stage to improve the heating efficiency, and on the other hand, a small area can be printed and formed during the printing and forming stage to improve the printing accuracy.

[0065] In addition, the continuous Gaussian laser provided in the present application is regulated by a power control module, and the power of the Gaussian laser can be adjusted according to the requirements of the parts.

[0066] During the printing and forming stage, the additive and subtractive composite manufacturing device prints and forms the powder by controlling the combined laser output. For details on the process, please refer to FIG5 , which is a flow chart of step S11 of the additive and subtractive composite manufacturing method shown in FIG1 .

[0067] As shown in Figure 5, the steps are as follows:

[0068] Step S111: selecting an output power ratio of the combined laser according to the preparation requirements of the parts, wherein the output power ratio is the ratio of the Gaussian laser power to the ring laser power.

[0069] In an embodiment of the present application, the additive and subtractive composite manufacturing device presets multiple output power ratios of the combined laser in the control program, and the output power ratio is the ratio of the Gaussian laser power to the ring laser power. An example is as follows:

[0070] As shown in the table above, D0 to D 1.0 It corresponds to the power ratio of the two lasers. By using Gaussian laser to compensate the energy of the central area, the energy density of the entire large spot is higher and more uniform.

[0071] Step S112: Printing and forming the powder covering the surface of the forming cylinder by combining lasers according to the output power ratio.

[0072] In an embodiment of the present application, the additive and subtractive composite manufacturing device obtains the preparation requirements of the parts, selects the output power ratio of the combined laser, and determines the output of the combined laser according to the output power ratio to print and form the powder covered on the surface of the forming cylinder.

[0073] The printing and forming of the powder covering the surface of the forming cylinder by the combined laser according to the output power ratio includes: using combined lasers with different power ratios for different powder areas to print and form the powder covering the surface of the forming cylinder.

[0074] Part preparation requirements can also include output power ratios for different regions of the part. This means that during the same printing phase, the additive and subtractive manufacturing device can use different output power ratios for the same region, or for different regions. The additive and subtractive manufacturing device can also pre-program a control program for the part to use different output power ratios for printing different regions of the part.

[0075] This application can greatly improve the efficiency of powder bed fusion additive manufacturing by combining continuous ring laser and continuous Gaussian laser. 0.2 In this mode, the beam emitted by the galvanometer onto the powder bed is a combination of high-power ring laser and Gaussian laser, forming a relatively uniform, high-energy beam spot. Due to the large beam spot size and high energy, the build layer thickness can reach over 0.15 mm, increasing build efficiency by more than 10 times.

[0076] Step S12: Turn off the combined laser and turn on the pulse laser.

[0077] In the embodiment of the present application, the control program of the additive and subtractive composite manufacturing device enters the cutting processing stage, that is, the combined laser is turned off and the pulse laser is turned on.

[0078] The additive and subtractive composite manufacturing device can also enter the scanning and heating stage again after completing the printing and forming stage. That is, after completing the printing and forming, the combined light beam is controlled to perform scanning and heating again, which can further eliminate the residual stress after printing.

[0079] Step S13: Cutting the contour of the forming surface by pulse laser to obtain the prepared part.

[0080] In the embodiment of the present application, after the current layer of the additive and subtractive composite manufacturing device is printed, the printed part is in a low stress state, and the software control is converted to ultrafast laser output to cut the forming contour and internal structure to improve the accuracy of the additive manufacturing of the part. Since the spot deviation value of the coaxial output is small, fast cutting with few passes can be achieved. Under the conditions of ensuring the single pulse energy and average output power, the inner and outer contour processing of the part can be completed by 2-3 cuttings. Among them, the forming surface refers to the forming surface obtained by scanning, heating and printing the powder covered on the surface of the forming cylinder by turning on the combined laser in step S11 and adjusting the spot size of the combined laser and the preset power of the continuous Gaussian laser.

[0081] For example, in the first and second processing passes, the cutting amount for each feed is 0.010㎜-0.012㎜, and in the third finishing pass, the cutting amount is 0.005㎜.

[0082] For example, the additive and subtractive composite manufacturing device combines three laser beams to produce a combined annular and Gaussian beam. The Gaussian laser power varies depending on the manufacturing requirements. When scanning and heating powder over a large area, the power is adjustable from 0 to 50W. During forming, the Gaussian laser power rises to 200-300W, after which the laser can be switched to ultrafast laser cutting. All of this is controlled by software.

[0083] After turning off the combined laser and before turning on the pulse laser, the additive and subtractive composite manufacturing method further includes: turning on a continuous ring laser to scan and heat the forming surface by the continuous ring laser.

[0084] Please continue to refer to FIG2 . This application introduces the process of the additive and subtractive composite manufacturing method of this application through an application scenario:

[0085] Exemplarily, the powder spreading device coats the surface of the forming cylinder with powder. After the powder coating is completed, the program instructions turn on the continuous ring laser and control the two-stage fixed focus module to be in the 2nd stage position. The continuous ring laser is output by the optical fiber and projected onto the powder surface through the beam expander, the fixed focus module and the galvanometer. The ring laser is high-power and has a large spot size. It scans and heats the powder surface, quickly heats the forming area, and makes the forming powder reach a certain temperature. Subsequently, the program instructions increase the power of the continuous Gaussian laser to 200W, and at the same time adjust the fixed focus module back to the 1st stage position. The optical fiber outputs a combined light beam. The combined light beam is a combination of a continuous ring laser (2000W) and a continuous Gaussian laser (200W). The combined light beam passes through the beam expander, the fixed focus module and the galvanometer to print the heated powder.

[0086] After the current layer is formed, the program instructions control the shutdown of the combined laser and output picosecond pulses. The picosecond laser passes through a beam expander, a fixed focus module and a galvanometer, and the laser spot size is focused to 30μm, which is projected onto the contour of the forming surface for cutting. Since the annular beam and the pulse beam are coaxially output, the axial offset value of the two beams is less than 0.003㎜, which allows for precise conformal cutting. The energy of a single picosecond laser pulse is 150μJ, and the pulse frequency is 300KHz. The cutting process is to feed a cutting amount of 15μm for the first time, and then feed a cutting amount of 10μm after the first cutting is completed. After the two cuttings are completed, a third finishing process is performed, and the feed cutting amount is 3μm-5μm. The powder spreading is controlled by the program to carry out the next layer of powder coating.

[0087] Please continue to refer to FIG2 . This application introduces the process of the additive and subtractive composite manufacturing method of this application through another application scenario:

[0088] Exemplarily, the powder spreading device coats the surface of the forming cylinder with powder. After the powder coating is completed, the program instructions turn on the continuous ring laser and control the two-stage fixed focus module to be in the 2nd position. The continuous ring laser is output by the optical fiber and projected onto the powder surface through the beam expander, the fixed focus module and the galvanometer. The ring laser is high-power and has a large spot size. It scans and bombards the powder surface, quickly heating the forming area and making the forming powder reach a certain temperature. Subsequently, the program instructions increase the power of the continuous Gaussian laser to 200W, and at the same time adjust the fixed focus module back to the 1st position. The optical fiber outputs a combined light beam. The combined light beam is a combination of a continuous ring laser (2000W) and a continuous Gaussian laser (200W). The combined light beam passes through the beam expander, the fixed focus module and the galvanometer to print the heated powder.

[0089] After the printing is completed, the combined light beam is controlled to perform another scanning and heating to further eliminate the residual stress after printing. This process can be adjusted according to the printing material. If the stress of the printing material after forming is large, implementing this step can increase the process.

[0090] After the current layer is formed, the program instructions control the shutdown of the combined laser and the output of picosecond pulses. The picosecond laser passes through a beam expander, a fixed focus module, and a galvanometer, focusing the spot size to 30μm, and then projects the laser onto the contour of the formed surface for cutting. Because the annular beam and the pulse beam are coaxially output, the axial offset value of the two beams is less than 0.003㎜, allowing for precise conformal cutting. The energy of a single picosecond laser pulse is 200μJ, and the pulse frequency is 1000KHz. The cutting process is to feed a cutting amount of 15μm for the first time, and then feed a cutting amount of 10μm after the first cutting is completed. After the two cuttings are completed, a third finishing process is performed with a feed cutting amount of 3μm-5μm. The powder coating of the next layer is controlled by the program.

[0091] In this embodiment of the present application, the additive and subtractive hybrid manufacturing device activates a combined laser beam, comprising a continuous ring laser and a continuous Gaussian laser beam, to print and shape the powder coating the surface of a forming cylinder. The combined laser beam is then deactivated and a pulsed laser beam activated. The pulsed laser beam then cuts the contour of the forming surface to produce the prepared part. This additive and subtractive hybrid manufacturing method outputs corresponding laser modes for different manufacturing stages, improving the efficiency and precision of additive manufacturing of parts.

[0092] In the above method of implementation, the writing order of multiple steps does not mean a strict execution order and does not constitute any limitation on the implementation process. The execution order of multiple steps should be determined by their functions and possible internal logic.

[0093] In order to realize the above-mentioned additive and subtractive composite manufacturing method, the present application also provides an additive and subtractive composite manufacturing device. Please refer to Figure 6, which is a structural schematic diagram of an embodiment of the additive and subtractive composite manufacturing device provided by the present application.

[0094] The additive and subtractive composite manufacturing device 300 of this embodiment includes a printing module 31 , a mode switching module 32 , and a cutting module 33 .

[0095] Among them, the printing and forming module 31 is set to turn on the combined laser, and scan, heat and print the powder covered on the surface of the forming cylinder by adjusting the spot size of the combined laser and the preset power of the continuous Gaussian laser, wherein the combined laser includes a continuous ring laser and a continuous Gaussian laser.

[0096] The mode switching module 32 is configured to turn off the combined laser and turn on the pulse laser.

[0097] The cutting processing module 33 is configured to cut the contour of the forming surface using the pulse laser to obtain a prepared part.

[0098] The additive and subtractive composite manufacturing device 300 of this embodiment can implement the additive and subtractive composite manufacturing method provided by any of the above embodiments, and has corresponding functions and effects.

[0099] In order to realize the above-mentioned additive and subtractive composite manufacturing method, the present application also provides another additive and subtractive composite manufacturing device. Please refer to Figure 7, which is a structural schematic diagram of another embodiment of the additive and subtractive composite manufacturing device provided by the present application.

[0100] The additive and subtractive composite manufacturing apparatus 400 of this embodiment includes a processor 41 , a memory 42 , an input and output device 43 , and a bus 44 .

[0101] The processor 41 , memory 42 , and input / output device 43 are respectively connected to a bus 44 . The memory 42 stores program data, and the processor 41 is configured to execute the program data to implement the additive and subtractive composite manufacturing method described in the above embodiment.

[0102] In the embodiment of the present application, the processor 41 may also be referred to as a central processing unit (CPU). The processor 41 may be an integrated circuit chip having signal processing capabilities. The processor 41 may also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. A general-purpose processor may be a microprocessor, or the processor 41 may be any conventional processor.

[0103] The present application also provides a computer storage medium. Please continue to refer to Figure 8. Figure 8 is a structural schematic diagram of an embodiment of the computer storage medium provided by the present application. The computer storage medium 600 stores a computer program 61. When the computer program 61 is executed by the processor, it is used to implement the additive and subtractive composite manufacturing method of the above embodiment.

[0104] When the embodiments of the present application are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. All or part of the technical solution of the present application can be embodied in the form of a software product, which is stored in a storage medium and includes multiple instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method described in multiple embodiments of the present application. The aforementioned storage medium includes: a universal serial bus flash disk (U disk), a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes. The storage medium can be a non-transitory storage medium.

[0105] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for additive and subtractive composite manufacturing, comprising: Turning on the combined laser, and scanning, heating, and printing the powder covered on the surface of the forming cylinder by adjusting the spot size of the combined laser and the preset power of the continuous Gaussian laser, wherein the combined laser includes a continuous ring laser and the continuous Gaussian laser; Turning off the combined laser and turning on the pulse laser; The pulse laser is used to cut the contour of the forming surface to obtain a prepared part.

2. The method according to claim 1, wherein The step of starting the combined laser and scanning, heating, and printing the powder on the surface of the forming cylinder by adjusting the spot size of the combined laser and the preset power of the continuous Gaussian laser comprises: Turning on the continuous ring laser and scanning and heating the powder covering the surface of the forming cylinder by the continuous ring laser; After a preset condition is reached, the continuous ring laser is turned off; The continuous ring laser and the continuous Gaussian laser are turned on, and the powder covered on the surface of the forming cylinder is printed and formed by adjusting the spot size of the continuous ring laser and the preset power of the continuous Gaussian laser.

3. The method according to claim 2, wherein: The preset condition is at least one of the following: the heating time reaches a preset time, or the powder temperature reaches a preset temperature.

4. The method according to claim 2, wherein: The ring beam size of the continuous ring laser in the scanning and heating stage is larger than the ring beam size in the printing and forming stage.

5. The method according to claim 1 or 2, wherein: After turning off the combined laser and before turning on the pulse laser, the method further includes: The continuous ring laser is turned on to scan and heat the forming surface.

6. The method according to claim 1, wherein The powder covered on the surface of the forming cylinder is scanned, heated, and printed by adjusting the preset power of the continuous Gaussian laser, including: According to the preparation requirements of the parts, the output power ratio of the combined laser is selected, wherein the output power ratio is the ratio of the Gaussian laser power to the ring laser power; The powder covering the surface of the forming cylinder is printed and formed by the combined laser according to the output power ratio.

7. The method according to claim 6, wherein: The step of printing and forming the powder covered on the surface of the forming cylinder by the combined laser according to the output power ratio includes: A combination of lasers with different output power ratios is used for different powder areas to print and shape the powder covered on the surface of the forming cylinder.

8. An additive and subtractive composite manufacturing device, wherein: The additive and subtractive composite manufacturing device includes: a printing and forming module, a mode switching module and a cutting processing module; wherein, The printing and forming module is configured to turn on a combined laser and perform scanning, heating, and printing on the powder covering the surface of the forming cylinder by adjusting the spot size of the combined laser and the preset power of the continuous Gaussian laser, wherein the combined laser includes a continuous ring laser and the continuous Gaussian laser; The mode switching module is configured to turn off the combined laser and turn on the pulse laser; The cutting processing module is configured to cut the contour of the forming surface using the pulse laser to obtain a prepared part.

9. An additive and subtractive composite manufacturing assembly comprising an integrated laser, a beam expander, a focus device, and a galvanometer connected in sequence via an output optical fiber; in, The integrated laser includes a coupler and a parallel continuous ring laser module, a continuous Gaussian laser module and a picosecond ultrafast laser module; the continuous ring laser module, the continuous Gaussian laser module and the picosecond ultrafast laser module are combined by the coupler, and the integrated laser is configured to implement the additive and subtractive composite manufacturing method according to any one of claims 1 to 7.

10. An additive and subtractive composite manufacturing device, wherein: The apparatus includes a memory and a processor coupled to the memory; The memory is configured to store program data, and the processor is configured to execute the program data to implement the additive and subtractive composite manufacturing method according to any one of claims 1 to 7.

11. A computer storage medium, wherein: The computer storage medium is configured to store program data, and when the program data is executed by a computer, it is used to implement the additive and subtractive composite manufacturing method according to any one of claims 1 to 7.

Images