A laser remanufacturing repair method for metal shaft parts

Abstract

The application discloses a laser remanufacturing repair method for metal shaft parts, and relates to the technical field of laser repair.The method comprises the following steps: placing a target shaft part to be repaired on a workbench, performing repair processing on a cladding area of the target shaft part by using flat-top light, obtaining a repaired shaft part, and adjusting the focal depth length of the flat-top light in real time by using an external optical device; and stopping the repair operation after detecting that the size of the repaired shaft part meets the preset required size.The application achieves the technical effect of making the laser energy density distribution uniform and improving the fatigue resistance of the shaft part and the consistency of the overall repair quality.

Description

Technical Field

[0001] This application relates to the field of laser repair technology, specifically to a laser remanufacturing repair method for metal shaft parts. Background Technology

[0002] In the laser remanufacturing repair of metal shaft parts, the laser cladding layer is typically a single-arched cross-section. Existing laser forging technologies mostly use Gaussian light, which has a limited focal range. When the forging laser acts on the arched cladding layer, due to the height difference between the arch and the edge, the edge area is often out of focus, resulting in uneven laser energy density distribution. This leads to inconsistent residual stress distribution and uneven grain refinement in the repair layer, severely affecting the fatigue resistance of the shaft parts and the consistency of the overall repair quality. Summary of the Invention

[0003] To address the technical problem in related technologies where the use of Gaussian light results in a limited focal range, leading to uneven residual stress distribution and inconsistent grain refinement in the repair layer, which severely affects the fatigue resistance and overall repair quality consistency of shaft parts, this application provides a laser remanufacturing repair method for metal shaft parts.

[0004] The specific technical solution adopted is as follows: The target shaft part to be repaired is placed on the worktable, and the cladding area of ​​the target shaft part is repaired by a flat-top light to obtain the repaired shaft part. The focal depth of the flat-top light is adjusted in real time by an external optical device. Once the dimensions of the repaired shaft part are detected to meet the preset requirements, the repair operation is stopped.

[0005] In one possible embodiment of this application, the repair process of the cladding area of ​​the target shaft part by using a flat-top light to obtain the repaired shaft part includes: Laser cladding is performed on the surface of the target shaft part to be repaired to form a single-arch cladding area, and the cladding area is then laser forged using a flat-top light to obtain the repaired shaft part.

[0006] In one possible embodiment of this application, the laser cladding process performed on the surface to be repaired of the target shaft part to form a single-arch cladding area includes: Determine the continuous laser used in the laser cladding process and the cladding material; The cladding material is applied to the surface to be repaired, and the surface to be repaired of the target shaft part is laser-clad using the continuous laser to form a single-arch cladding area.

[0007] In one possible embodiment of this application, the step of laser forging the cladding area with a flat-top light to obtain the repaired shaft part includes: The nanosecond pulse laser directed to the cladding area is converted by an external optical device to obtain a flat-top light with a long focal depth. The nanosecond pulse laser includes Gaussian light. The external optical device mainly consists of a beam expander, an aspherical homogenizer, a Galilean aspherical mirror group, and a focusing lens. The target shaft part is controlled to rotate counterclockwise, and the temperature distribution data of the cladding area is acquired in real time to determine the target forging area in the cladding area that is within the preset forging temperature range; The flat-top light is controlled to act on the target forging area to perform laser forging treatment on various parts of the cladding area, thereby obtaining the repaired shaft part.

[0008] In one possible embodiment of this application, the beam expander is a large-aperture expanding lens group with an aperture ≥ 50 mm, used to expand the input Gaussian light beam.

[0009] In one possible implementation of this application, the aspherical homogenizer is of the Galilean or Keplerian type, and is used to convert Gaussian light into a uniform circular flat-topped light spot.

[0010] In one possible embodiment of this application, the Galilean aspherical lens group includes a negative aspherical lens and a positive aspherical lens, and the Galilean aspherical lens group is used to maintain the flat-top shape of the flat-top light within a preset depth of focus.

[0011] In one possible embodiment of this application, the focusing lens may be an aspherical lens or an electrically adjustable zoom lens, and the focusing lens is used to adjust the focal length of the flat-top light in order to control the depth of focus of the flat-top light.

[0012] In one possible implementation of this application, before placing the target shaft part to be repaired on the worktable, the method further includes: A damage assessment is performed on the target shaft parts to be repaired to verify whether the target shaft parts meet the repair requirements; If the target shaft part does not meet the repair requirements, a scrap recycling operation will be performed on the target shaft part; if the target shaft part meets the repair requirements, a repair operation will be performed on the target shaft part.

[0013] In one possible implementation of this application, after stopping the repair operation after detecting that the dimensions of the repaired shaft part meet the preset required dimensions, the method further includes: The repaired shaft parts are turned and polished according to preset requirements.

[0014] This application has, but is not limited to, the following technical effects: By placing the target shaft part to be repaired on the worktable, and then using a flat-top light to repair the cladding area of ​​the target shaft part, the repaired shaft part is obtained. Since the focal depth of the flat-top light can be adjusted in real time by an external optical device, the same light intensity can be applied to all parts of complex curved surfaces and arched surfaces during the repair process of the target shaft part, thereby making the laser energy density distribution uniform, improving the fatigue resistance of shaft parts and the consistency of overall repair quality. During the repair process, the repaired shaft part is inspected in real time, and the repair operation is stopped when the size of the shaft part meets the preset requirements. Attached Figure Description

[0015] Figure 1 This is a schematic flowchart of the first embodiment of the laser remanufacturing and repair method for metal shaft parts according to this application; Figure 2 This is a schematic diagram of the shaft part repair method used in the laser remanufacturing repair method for metal shaft parts according to this application; Figure 3 These are schematic diagrams of the longitudinal and transverse sections of the shaft involved in the laser remanufacturing repair method for metal shaft parts used in this application. Figure 4 This is a schematic diagram of the Gaussian beam to flat-top beam conversion process involved in the laser remanufacturing and repair method for metal shaft parts in this application; Figure 5 This is a schematic diagram of the device structure of the hardware operating environment involved in the embodiments of this application. Detailed Implementation

[0016] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0017] This application provides a laser remanufacturing repair method for metal shaft parts. In the first embodiment of this application's laser remanufacturing repair method for metal shaft parts, refer to... Figure 1 The method includes: Step S10: Place the target shaft part to be repaired on the worktable, and repair the cladding area of ​​the target shaft part with a flat-top light to obtain the repaired shaft part. The focal depth of the flat-top light is adjusted in real time by an external optical device.

[0018] As an example, existing laser forging technology generally uses nanosecond pulsed lasers, and the laser beam is mostly Gaussian light or a Gaussian light converted into a flat-top beam. The characteristics of Gaussian light are that the cross-sectional light intensity follows a Gaussian function distribution, with the maximum light intensity at the center, decreasing exponentially outwards, and the light intensity at the edge approaching zero, and the light intensity changes continuously with the propagation distance. The existing flat-top beam converted from Gaussian light has a short focal depth, and its collimation (M2) is usually higher than that of the original Gaussian light. The spot size changes more rapidly with the propagation distance, and the focused spot may exhibit a non-uniform distribution (such as a central depression). Laser forging requires the forging position to be near the laser focal point. When the forging area is planar, Gaussian and flat-top beams can achieve a uniform stress distribution impact effect with a suitable overlap ratio. However, when the forging area is arched, the top of the arch is at the laser focal point, while the sides are at the defocus position. Due to the propagation characteristics of Gaussian and flat-top beams, the laser intensity received by the top and sides of the arch is inconsistent, resulting in poor consistency in the laser forging effect, i.e., poor uniformity of residual stress distribution and grain refinement. Furthermore, the single-pass morphology of the cladding zone in laser additive remanufacturing is mostly arched, especially for shaft parts. The tops of the single-pass arched surfaces in the cladding zone are not on the same horizontal plane, making the consistency problem of the laser forging effect even more pronounced in such cases.

[0019] During the repair process, the target shaft part is placed on the worktable. The Gaussian light output by the laser is converted into a flat-top light with a long focal depth. Since the flat-top light with a long focal depth is particularly suitable for laser forging additive remanufacturing repair of complex curved surfaces and arched surfaces, when laser forging is performed on a single arched surface of the cladding area of ​​the shaft part, the laser beam irradiates all parts of the cladding path with the same light intensity, thereby achieving the consistency of the laser forging effect, improving the comprehensive mechanical properties of the cladding area and the overall repair quality.

[0020] As an example, the external optical device can be a device for converting Gaussian light emitted by a laser into a flat-top light with adjustable focal depth. During the repair of the target shaft parts, the focal depth of the flat-top light is adjusted in real time to avoid uneven stress.

[0021] Before placing the target shaft part to be repaired on the worktable, the process also includes: A damage assessment is performed on the target shaft parts to be repaired to verify whether the target shaft parts meet the repair requirements; If the target shaft part does not meet the repair requirements, a scrap recycling operation will be performed on the target shaft part; if the target shaft part meets the repair requirements, a repair operation will be performed on the target shaft part.

[0022] As an example, before repairing a target shaft part, its degree of damage needs to be assessed. If it reaches the scrap level, it does not meet the repair requirements and therefore does not need to be repaired. For target shaft parts that do not meet the repair requirements, scrap recycling is performed. For target shaft parts that meet the repair requirements, repair is performed. Before repair, the target shaft part also needs to undergo pre-repair treatment. Pre-repair treatment involves turning and polishing the damaged area of ​​the target shaft part to remove surface oil and other impurities, remove micro-cracks and other defects, and process the damaged area into a cylindrical shape coaxial with the shaft to be repaired.

[0023] Step S10 includes: The repair process, which involves using a flat-top light source to repair the cladding area of ​​the target shaft part to obtain a repaired shaft part, includes: Laser cladding is performed on the surface of the target shaft part to be repaired to form a single-arch cladding area, and the cladding area is then laser forged using a flat-top light to obtain the repaired shaft part.

[0024] As an example, the repair process mainly includes two parts: laser cladding repair and laser forging. First, a continuous laser emitted by a fiber laser and cladding material (which can be considered as welding wire) are used to clad the surface to be repaired to generate a cladding area. Then, a flat-top light is used to laser forge the cladding area to obtain the repaired shaft part.

[0025] In step S10, laser cladding is performed on the surface of the target shaft part to be repaired to form a single-arch cladding area, including: Determine the continuous laser used in the laser cladding process and the cladding material; The cladding material is applied to the surface to be repaired, and the surface to be repaired of the target shaft part is laser-clad using the continuous laser to form a single-arch cladding area.

[0026] As an example, the continuous laser can be emitted by a fiber laser, and the cladding material can be selected from suitable metal powders or wires as needed, such as H13 alloy metal powder. The feeding method can be coaxial powder feeding, off-axis powder feeding, lateral wire feeding, etc. The protective gas is an inert gas with a purity of 99.99%. The surface to be repaired is laser clad to form a single arched cladding area.

[0027] For example, the relevant parameters of the laser cladding process can be: laser power of 2000W, scanning speed of 5mm / s, defocusing amount of -2mm, powder feeding voltage of 25V, cladding overlap rate of 30% when cladding in the same layer, and display height of 0.6mm and width of 1.5mm for a single arched cladding area.

[0028] The step S10, which involves laser forging the cladding area with a flat-top light to obtain the repaired shaft part, includes: The nanosecond pulse laser directed to the cladding area is converted by an external optical device to obtain a flat-top light with a long focal depth. The nanosecond pulse laser includes Gaussian light. The external optical device mainly consists of a beam expander, an aspherical homogenizer, a Galilean aspherical mirror group, and a focusing lens. As an example, laser forging uses nanosecond pulsed laser light emitted by a nanosecond pulsed solid-state laser. This nanosecond pulsed laser light can be Gaussian light. After passing through an external optical device, the Gaussian light is converted into a flat-top beam with a long depth of focus. Through this external optical device, the spot size and depth of focus of the flat-top beam are adjustable, and the depth of focus is controllable. The external optical device mainly consists of a beam expander, an aspherical homogenizer, a Galilean aspherical lens group, and a focusing lens. Specifically... Figure 4 As shown.

[0029] As an example, the selection of the laser forging area is determined by the forging temperature range of the cladding material. The forging temperature range of the metal refers to the optimal temperature range in which the metal material can maintain good plastic deformation ability and avoid defects during the forging (hot working) process. This range is between a maximum temperature (upper limit) and a minimum temperature (lower limit). The forging area is detected by a thermal imager, and the information is fed back to the computer. The computer then issues an instruction to control the pulsed laser to fall on the forging area, and the surface of the forging area is within the focal depth distance of the long focal depth flat-top beam.

[0030] Specifically, the parameters related to the laser forging process can be as follows: the forging laser uses a circular spot with a diameter of 3mm, the laser wavelength is 1064nm, the laser energy is ≤10J, the laser pulse width is 20ns, the forging frequency is 5Hz, and the distance between the forging laser and the continuous laser is 2mm to 2.5mm.

[0031] The beam expander is a large-aperture expanding lens group with an aperture of ≥50mm, used to expand the input Gaussian light beam.

[0032] As an example, the beam expander is a large-aperture expanding lens group, which adopts Galilean expansion (negative lens + positive lens), with an aperture ≥ 50 mm. The lens is coated with an anti-high-power coating (AR (Anti-Reflection) < 0.5%). The function of the beam expander is to expand the beam, magnify the original Gaussian spot diameter several times, reduce the energy density per unit area, prevent subsequent optical components from being burned out, and improve the beam quality.

[0033] The aspherical homogenizer is of the Galilean or Keplerian type, and is used to convert Gaussian light into a uniform circular flat-topped light spot.

[0034] As an example, the aspherical homogenizer adopts a Galilean or Keplerian type, and calculates the curvature coefficients of the two aspherical surfaces based on the homogenized Lorentz function to ensure energy conservation mapping. The function of the aspherical homogenizer is: flat-top shaping, which converts the collimated Gaussian beam into a uniform circular flat-top beam spot, so as to achieve uniform energy distribution within the spot and avoid overheating in the center.

[0035] The Galilean aspherical lens group includes a negative aspherical lens and a positive aspherical lens, and is used to maintain the flat-top shape of the flat-top light within a preset depth of focus.

[0036] As an example, the Galilean aspherical mirror group consists of two lenses. Along the laser propagation direction, the first lens is a negative aspherical and the second lens is a positive aspherical. The focal depth of the flat-top beam is directly determined by the focal length ratio of the two aspherical lenses. The function of the Galilean aspherical mirror group is to achieve a long focal depth by mapping the flat-top beam onto the Lorentz flat-top model and achieving a long focal depth through phase gradient, so that the beam maintains a flat-top shape within the set focal depth and the spot diameter remains basically unchanged.

[0037] The focusing lens can be an aspherical lens or a motorized zoom lens. The focusing lens is used to adjust the focal length of the flat-top light in order to control the depth of focus of the flat-top light.

[0038] As an example, the focusing lens is a large-aperture (≥50mm) low-dispersion aspherical lens, which, together with the preceding long focal depth element, forms a three-segment optical path of quasi-flat top-long focal depth-focusing. If flexible adjustment of focal depth is required, an electrically adjustable zoom lens can be used. The function of the focusing lens is to finally focus the beam after flat top + long focal depth processing onto the working spot surface of the required size to meet the size requirements of the laser forging area. The adjustable focal length enables control of the focal depth.

[0039] As an example, a diamond pinhole filter is provided between the beam expander and the aspherical homogenizer. A short focal length lens is placed in front of the diamond pinhole filter to focus the expanded beam onto the diamond pinhole, filtering out higher-order modes and speckle. A collimating lens is placed behind the diamond pinhole filter to re-collimate the beam, ensuring that the beam quality is restored to the ideal Gaussian mode.

[0040] The target shaft part is controlled to rotate counterclockwise, and the temperature distribution data of the cladding area is acquired in real time to determine the target forging area in the cladding area that is within the preset forging temperature range; As an example, the temperature distribution data of the cladding area is monitored in real time, and a target forging area in the cladding area whose temperature distribution data is within the preset forging temperature range is selected.

[0041] As an example, a schematic diagram of shaft component repair is shown below. Figure 2 As shown, the rotation direction is counterclockwise, and the forging laser and cladding laser are spaced a certain distance apart. Repair is achieved by feeding metal powder and protective gas. The preset forging temperature range can be between a maximum temperature (upper limit) and a minimum temperature (lower limit), specifically 850°C to 1150°C. The target forging area is detected by a thermal imager, and the information is fed back to the computer. The computer then issues commands to control the pulsed laser to fall on the forging area, ensuring the surface of the forging area is within the focal depth of the long-focal-depth flat-top beam. A schematic diagram of the longitudinal section of the shaft during the repair process is shown below. Figure 3 As shown in part (a) of the diagram, the transverse cross-section of the shaft is as follows: Figure 3 As shown in part (b) of the document.

[0042] The flat-top light is controlled to act on the target forging area to perform laser forging treatment on various parts of the cladding area, thereby obtaining the repaired shaft part.

[0043] As an example, the spot size, uniformity, and depth of focus of the emitted forging laser (flat-top laser) can be detected by a CCD / CMOS monitoring camera and an energy meter to perform laser forging on various parts of the cladding area, resulting in a repaired shaft part.

[0044] Step S20: After detecting that the size of the repaired shaft part meets the preset requirement size, the repair operation is stopped.

[0045] As an example, the preset required size can be 2mm~3mm. After the repaired shaft part is obtained, the repaired size of the shaft part is checked. If it meets the original design size of the shaft part and ensures sufficient margin, the laser cladding and laser forging work is stopped. Meeting this margin means meeting the preset required size.

[0046] After step S20, the following steps are also included: The repaired shaft parts are turned and polished according to preset requirements.

[0047] As an example, the repaired shaft parts are turned and polished according to actual needs. The preset requirements are adjusted according to actual needs, and no specific limitations are imposed.

[0048] This application provides a laser remanufacturing repair method for metal shaft parts. The method involves placing the target shaft part to be repaired on a worktable and then using a flat-top laser to repair the cladding area of ​​the target shaft part, resulting in a repaired shaft part. Since the focal depth of the flat-top laser can be adjusted in real time by an external optical device, the same light intensity can be applied to various parts of complex curved and arched surfaces during the repair process, thereby making the laser energy density distribution uniform, improving the fatigue resistance of the shaft parts and the consistency of the overall repair quality. During the repair process, the repaired shaft part is monitored in real time, and the repair operation is stopped when the size of the shaft part meets the preset requirements.

[0049] Reference Figure 5 , Figure 5 This is a schematic diagram of the device structure of the hardware operating environment involved in the embodiments of this application.

[0050] like Figure 5 As shown, the laser remanufacturing and repair equipment for metal shaft parts may include: a processor 1001, a memory 1003, and a communication bus 1002. The communication bus 1002 is used to realize the connection and communication between the processor 1001 and the memory 1003.

[0051] Optionally, the laser remanufacturing and repair equipment for metal shaft parts may also include a user interface, a network interface, a camera, RF (Radio Frequency) circuitry, sensors, a WiFi module, etc. The user interface may include a display screen and an input submodule such as a keyboard; optional user interfaces may also include standard wired or wireless interfaces. The network interface may include standard wired or wireless interfaces (such as a Wi-Fi interface).

[0052] Those skilled in the art will understand that Figure 5 The structure of the laser remanufacturing and repair equipment for metal shaft parts shown in the figure does not constitute a limitation on the laser remanufacturing and repair equipment for metal shaft parts. It may include more or fewer parts than shown, or combine certain parts, or have different part arrangements.

[0053] like Figure 5As shown, the memory 1003, serving as a storage medium, may include an operating system, a network communication module, and a laser remanufacturing repair program for metal shaft parts. The operating system is a program that manages and controls the hardware and software resources of the laser remanufacturing repair equipment for metal shaft parts, supporting the operation of the laser remanufacturing repair program for metal shaft parts and other software and / or programs. The network communication module is used to enable communication between the various components within the memory 1003, as well as communication with other hardware and software in the laser remanufacturing repair system for metal shaft parts.

[0054] exist Figure 5 In the laser remanufacturing and repair equipment for metal shaft parts shown, the processor 1001 is used to execute the laser remanufacturing and repair program for metal shaft parts stored in the memory 1003 to implement the steps of the laser remanufacturing and repair method for metal shaft parts described in any of the above claims.

[0055] The specific implementation method of the laser remanufacturing and repair equipment for metal shaft parts in this application is basically the same as the embodiments of the laser remanufacturing and repair method for metal shaft parts described above, and will not be repeated here.

[0056] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0057] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0058] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of 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) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0059] The above are merely preferred embodiments of this application and do not limit the scope of this application. Any equivalent structural or procedural transformations made based on the description and drawings of this application, or direct or indirect applications in other related technical fields, are similarly included within the scope of protection of this application.

[0060] It should be noted that the order of the embodiments described above is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. The processes depicted in the accompanying drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0061] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

Claims

1. A method for laser remanufacturing and repairing metal shaft parts, characterized in that, The method includes: The target shaft part to be repaired is placed on the worktable, and the cladding area of ​​the target shaft part is repaired by a flat-top light to obtain the repaired shaft part. The focal depth of the flat-top light is adjusted in real time by an external optical device. Once the dimensions of the repaired shaft part are detected to meet the preset requirements, the repair operation is stopped.

2. The laser remanufacturing repair method for metal shaft parts as described in claim 1, characterized in that, The repair process, which involves using a flat-top light source to repair the cladding area of ​​the target shaft part to obtain a repaired shaft part, includes: Laser cladding is performed on the surface of the target shaft part to be repaired to form a single-arch cladding area, and the cladding area is then laser forged using a flat-top light to obtain the repaired shaft part.

3. The laser remanufacturing repair method for metal shaft parts as described in claim 2, characterized in that, The process of performing laser cladding on the surface of the target shaft part to be repaired to form a single-arch cladding area includes: Determine the continuous laser used in the laser cladding process and the cladding material; The cladding material is applied to the surface to be repaired, and the surface to be repaired of the target shaft part is laser-clad using the continuous laser to form a single-arch cladding area.

4. The laser remanufacturing repair method for metal shaft parts as described in claim 2, characterized in that, The method of laser forging the cladding area using a flat-top light to obtain the repaired shaft part includes: The nanosecond pulse laser directed to the cladding area is converted by an external optical device to obtain a flat-top light with a long focal depth. The nanosecond pulse laser includes Gaussian light. The external optical device mainly consists of a beam expander, an aspherical homogenizer, a Galilean aspherical mirror group, and a focusing lens. The target shaft part is controlled to rotate counterclockwise, and the temperature distribution data of the cladding area is acquired in real time to determine the target forging area in the cladding area that is within the preset forging temperature range; The flat-top light is controlled to act on the target forging area to perform laser forging treatment on various parts of the cladding area, thereby obtaining the repaired shaft part.

5. The laser remanufacturing repair method for metal shaft parts as described in claim 4, characterized in that, The beam expander is a large-aperture expanding lens group with an aperture of ≥50mm, used to expand the input Gaussian light beam.

6. The laser remanufacturing repair method for metal shaft parts as described in claim 4, characterized in that, The aspherical homogenizer is of the Galilean or Keplerian type, and is used to convert Gaussian light into a uniform circular flat-topped light spot.

7. The laser remanufacturing repair method for metal shaft parts as described in claim 4, characterized in that, The Galilean aspherical lens group includes a negative aspherical lens and a positive aspherical lens, and is used to maintain the flat-top shape of the flat-top light within a preset depth of focus.

8. The laser remanufacturing repair method for metal shaft parts as described in claim 4, characterized in that, The focusing lens can be an aspherical lens or a motorized zoom lens. The focusing lens is used to adjust the focal length of the flat-top light in order to control the depth of focus of the flat-top light.

9. The laser remanufacturing repair method for metal shaft parts as described in claim 1, characterized in that, Before placing the target shaft part to be repaired on the worktable, the process also includes: A damage assessment is performed on the target shaft parts to be repaired to verify whether the target shaft parts meet the repair requirements; If the target shaft part does not meet the repair requirements, a scrap recycling operation will be performed on the target shaft part; if the target shaft part meets the repair requirements, a repair operation will be performed on the target shaft part.

10. The laser remanufacturing repair method for metal shaft parts as described in claim 1, characterized in that, After detecting that the dimensions of the repaired shaft part meet the preset requirements and stopping the repair operation, the process further includes: The repaired shaft parts are turned and polished according to preset requirements.

Images