Microgroove foot margin parameter optimization method for supporting laser

Abstract

The invention relates to the technical field of parameter optimization of laser supporting structures, and discloses a microgroove foot margin parameter optimization method for supporting a laser. Comprising the steps that an optimization target is determined, a three-dimensional model comprising a shell, a fixing base and a supporting block is established, the direction of a force unloading groove of the fixing base is parallel to the shape structure of a V-shaped groove of a laser, and the force unloading groove is of an open groove structure distributed up and down at intervals; setting a parameter range of a force unloading groove, carrying out mechanical analysis on the fixing seat under different parameter combinations by adopting a finite element simulation method, and obtaining stress distribution and deformation quantity data of the fixing seat under each parameter combination in a fixing screw locking process and when a shell generates transverse deformation due to environment temperature change; according to a preset stress threshold value and a preset deformation threshold value, stress distribution and deformation data obtained through simulation are analyzed, and a parameter combination enabling the force unloading groove to effectively absorb and release locking deformation of the fixing screw and transverse temperature deformation of the shell is obtained.

Description

Technical Field

[0001] This application relates to the field of parameter optimization technology for laser support structures, and in particular to a method for optimizing the parameters of microgroove feet used to support lasers. Background Technology

[0002] In the design of laser support structures, microgroove feet, as key components connecting the housing and the external mounting interface, must simultaneously withstand the local stress generated by the fixing screws and the deformation stress of the housing caused by changes in ambient temperature. Traditional support structure designs typically rely on empirical values ​​for setting parameters of the stress-relieving grooves in the fixed base, lacking analysis of the correlation between the direction, distribution (e.g., vertical spacing), and geometric dimensions (number, length, width, depth, etc.) of the stress-relieving grooves and the actual stress scenarios. Specifically, existing technologies have the following problems: 1. The fact that the direction of the stress relief groove is not clearly defined to be parallel to the V-groove structure in order to match the specific deformation direction (such as lateral temperature deformation) makes it impossible for the stress relief groove to accurately absorb the deformation energy in the target direction; 2. The lack of systematic parameter optimization for the slotted pattern of the stress relief groove with its upper and lower intervals makes it difficult to balance the deformation absorption requirements and structural strength at different locations; 3. The simulation analysis did not combine the deformation of the fixing screws and the temperature deformation of the shell. The parameter selection could not take into account functionality, manufacturing feasibility and structural strength, which could easily lead to stress concentration or structural failure.

[0003] Therefore, a method is urgently needed to solve at least one of the above problems. Summary of the Invention

[0004] This application provides a method for optimizing the parameters of microgroove foot supports for lasers, aiming to solve the problem that there is no systematic optimization method for the parameters of microgroove foot relief grooves in the prior art, especially the lack of technical solutions through finite element simulation quantitative analysis, multi-index screening and secondary verification.

[0005] In a first aspect, embodiments of this application provide a method for optimizing the parameters of microgroove feet used to support a laser, including: The optimization objective is to enable the stress relief groove of the microgroove foot to effectively absorb and release the deformation of the fixing screw and the deformation of the shell in the lateral direction caused by changes in ambient temperature. A three-dimensional model including the shell, the fixing seat and the support block is established, wherein the stress relief groove of the fixing seat is parallel to the V-shaped groove structure of the laser, and the stress relief groove is a slotted structure with vertical spacing. The parameter range of the stress relief groove is set, including the number of stress relief grooves, the length, width, and depth of a single stress relief groove, and the spacing between the upper and lower stress relief grooves; the finite element simulation method is used to perform mechanical analysis on the fixed seat under different parameter combinations, and the stress distribution and deformation data of the fixed seat under each parameter combination during the fixing screw fastening process and when the shell undergoes lateral deformation due to changes in ambient temperature are obtained; Based on the preset stress threshold and deformation threshold, the stress distribution and deformation data obtained from the simulation are analyzed to obtain the parameter combination that enables the stress relief groove to effectively absorb and release the deformation of the fixing screw and the lateral temperature deformation of the shell. The parameter combination includes the number of stress relief grooves that are parallel to the V-shaped groove structure and distributed vertically at intervals, the length, width, and depth of a single stress relief groove, and the interval distance between the upper and lower stress relief grooves.

[0006] In some embodiments, if multiple parameter combinations are obtained, the method further includes: calculating the processing difficulty and material strength retention rate of the stress relief groove corresponding to each parameter combination, and obtaining the target parameter combination based on preset functional indicators, processing feasibility indicators and structural strength indicators.

[0007] In some embodiments, obtaining the target parameter combination based on preset functional indicators, processing feasibility indicators, and structural strength indicators includes: assigning weights to the functional indicators, processing feasibility indicators, and structural strength indicators respectively, wherein the weight of the functional indicators is higher than that of the processing feasibility indicators and structural strength indicators; for each parameter combination, calculating a functional score based on the ability of the stress relief groove to absorb and release deformation, calculating a processing feasibility score based on the tool specifications and processing complexity required for processing the stress relief groove, and calculating a structural strength score based on the material removal rate and the stress concentration degree of the remaining structure; weighting and summing the scores according to preset weights to obtain a comprehensive score for each parameter combination; and selecting the parameter combination with the highest comprehensive score as the target parameter combination.

[0008] In some embodiments, after obtaining the parameter combination that enables the stress relief groove to effectively absorb and release the deformation of the fixing screw and the lateral temperature deformation of the shell, the method further includes: inputting the parameter combination into the three-dimensional model for secondary simulation verification to confirm that the stress and deformation of the stress relief groove under the scenarios of fixing screw and lateral temperature deformation of the shell meet the preset threshold requirements; if the secondary simulation verification is successful, the optimized parameters are determined as the final parameters of the fixed seat stress relief groove.

[0009] In some embodiments, the step of inputting the parameter combination into the three-dimensional model for secondary simulation verification to confirm that the stress and deformation of the stress relief groove meet the preset threshold requirements under the scenarios of fixed screw fastening and shell lateral temperature deformation includes: inputting the number of stress relief grooves, the length, width, depth, and vertical spacing of a single stress relief groove corresponding to the selected parameter combination into the three-dimensional model to generate a fixed seat model containing the optimized stress relief groove structure; applying a load equivalent to the actual fastening force to the model under the fixed screw fastening scenario, and applying a thermal expansion load corresponding to a preset temperature change range to the model under the shell lateral temperature deformation scenario; running finite element simulation calculations to obtain stress distribution cloud maps and deformation data of the stress relief groove area; comparing the maximum stress value obtained from the finite element simulation with the preset stress threshold, and comparing the maximum value corresponding to the deformation data with the preset deformation threshold; if neither exceeds the corresponding threshold, the secondary simulation verification is deemed successful.

[0010] In some embodiments, determining the optimization objective, which is to enable the stress relief groove of the microgroove foot to effectively absorb and release the deformation caused by the fixing screw and the deformation of the shell in the lateral direction due to changes in ambient temperature, includes: analyzing the direction and range of local compression deformation caused by the tightening torque during the fixing screw tightening process, and the direction and range of lateral deformation of the shell caused by the thermal expansion and contraction of the material within a preset temperature change range; clarifying that the deformation absorption capacity required by the stress relief groove should cover the direction and range of the above two types of deformation, and ensuring that the stress concentration at the connection interface between the fixing seat and the shell is lower than the critical value that leads to structural failure.

[0011] In some embodiments, the method is used to optimize a laser support structure based on a microgroove foot, including at least one first microgroove foot and at least one second microgroove foot; the first microgroove foot includes a first support block and a first fixing seat, and the second microgroove foot includes a second support block and a second fixing seat; the first fixing seat and the second fixing seat are connected to the side wall of the housing, and the first support block and the second support block are mounted on the bottom of the housing; wherein, the force-relieving direction corresponding to the first microgroove foot is a longitudinal direction perpendicular to the light-emitting direction corresponding to the housing; the force-relieving direction corresponding to the second microgroove foot is a transverse direction perpendicular to the light-emitting direction corresponding to the housing; Establishing a three-dimensional model including the shell, fixed base, and support block includes: constructing a three-dimensional model of the shell according to the actual size parameters of the shell, and reserving installation interfaces for the fixed base and support block on the side wall and bottom mounting surface of the shell respectively; constructing three-dimensional models of the first fixed base, the second fixed base, the first support block, and the second support block, wherein the V-shaped groove structure of the first fixed base and the second fixed base, the semi-cylindrical structure of the first support block and the second support block, and the slotting direction and distribution of the stress relief groove are all modeled according to the actual design requirements; in the three-dimensional model, assembling the first fixed base and the second fixed base to the shell through the side wall mounting interface, and the first support block and the second support block to the shell through the bottom mounting interface.

[0012] In some embodiments, setting the parameter range of the stress relief groove includes: determining the range of the slottable area of ​​the stress relief groove based on the overall size of the fixed seat and the position of the V-shaped groove structure; controlling the number of stress relief grooves within a preset integer range, setting the length of a single stress relief groove to no more than 80% of the length of the slottable area, setting the depth to no more than 50% of the wall thickness of the fixed seat, and setting the interval between the upper and lower stress relief grooves to 1 to 3 times the width of a single stress relief groove; and discretizing the value range of each parameter into integers or decimals to form a set of parameter combinations that can be used for simulation calculations.

[0013] In some embodiments, the finite element simulation method is used to perform mechanical analysis on the fixed seat under different parameter combinations, and to obtain the stress distribution and deformation data of the fixed seat under each parameter combination during the fixing screw fastening process and when the shell undergoes lateral deformation due to changes in ambient temperature. This includes: meshing the fixed seat model containing different unloading groove parameters, and refining the mesh in the V-groove limiting surface, screw mounting hole area, and unloading groove edge; in the fixing screw fastening scenario simulation, applying an axial preload load to the screw mounting groove waist hole to simulate the fastening process of the shoulder screw; in the shell lateral temperature deformation scenario simulation, applying a lateral displacement load to the bottom mounting surface of the shell to simulate the shell deformation caused by temperature changes; setting the calculation accuracy and convergence conditions of the simulation solver, running the mechanical analysis calculation, and obtaining the maximum stress value, stress concentration location, and relative deformation of the interface between the fixed seat and the shell under each parameter combination.

[0014] In some embodiments, the step of analyzing the stress distribution and deformation data obtained from the simulation based on preset stress thresholds and deformation thresholds to obtain parameter combinations that enable the stress relief groove to effectively absorb and release the deformation of the fixing screw and the lateral temperature deformation of the shell includes: establishing screening conditions so that the maximum stress in the stress relief groove area under the fixing screw scenario does not exceed 70% of the material yield strength, and the relative deformation between the fixing seat and the shell under the lateral temperature deformation scenario does not exceed 0.1 mm; traversing the simulation data of each parameter combination, and screening out parameter combinations that simultaneously meet the above two conditions as candidate effective parameter combinations.

[0015] This invention, by defining the groove orientation as parallel to the V-shaped groove structure and spaced vertically, and combining simulation analysis, enables the stress-relieving groove to accurately absorb the deformation of the fixing screws and the lateral temperature deformation of the shell, thus avoiding structural failure caused by stress concentration. By setting parameter ranges for the number, size, and spacing of the stress-relieving grooves, and combining finite element simulation and threshold screening, comprehensive optimization of functionality, fabrication feasibility, and structural strength is achieved, improving design reliability. Through a standardized process of 3D modeling, simulation analysis, and secondary verification, parameter optimization is automated and precise, reducing trial-and-error costs and improving design efficiency.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the first laser support structure based on microgroove feet provided in an embodiment of this application; Figure 2 This is a schematic diagram of the second type of laser support structure based on microgroove feet provided in an embodiment of this application; Figure 3 This is an exploded view of the installation of the first microgroove foot according to an embodiment of this application; Figure 4 This is an exploded view of the installation of the second microgroove foot according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the first microgroove foot provided in an embodiment of this application; Figure 6This is a schematic diagram of the structure of the second microgroove foot provided in an embodiment of this application; Figure 7 This is a schematic flowchart illustrating the steps of a method for optimizing the parameters of a microgroove foot for supporting a laser, as provided in an embodiment of this application. Figure 8 This is a schematic block diagram of a control module provided in an embodiment of this application.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the order described. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0022] It should be understood that, in order to clearly describe the technical solutions of the embodiments of the present invention, the terms "first" and "second" are used in the embodiments of the present invention to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0023] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0025] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] In the design of laser support structures, microgroove feet, as key components connecting the housing and the external mounting interface, must simultaneously withstand the local stress generated by the fixing screws and the deformation stress of the housing caused by changes in ambient temperature. Traditional support structure designs typically rely on empirical values ​​for setting parameters of the stress-relieving grooves in the fixed base, lacking analysis of the correlation between the direction, distribution (e.g., vertical spacing), and geometric dimensions (number, length, width, depth, etc.) of the stress-relieving grooves and the actual stress scenarios. Specifically, existing technologies have the following problems: 1. The fact that the direction of the stress relief groove is not clearly defined to be parallel to the V-groove structure in order to match the specific deformation direction (such as lateral temperature deformation) makes it impossible for the stress relief groove to accurately absorb the deformation energy in the target direction; 2. The lack of systematic parameter optimization for the slotted pattern of the stress relief groove with its upper and lower intervals makes it difficult to balance the deformation absorption requirements and structural strength at different locations; 3. The simulation analysis did not combine the deformation of the fixing screws and the temperature deformation of the shell. The parameter selection could not take into account functionality, manufacturing feasibility and structural strength, which could easily lead to stress concentration or structural failure.

[0027] Therefore, a method is urgently needed to solve at least one of the above problems.

[0028] Please refer to Figures 1-6 This application provides a laser support structure based on microgroove feet for supporting a laser housing 10; it includes at least one first microgroove foot 20 and at least one second microgroove foot 30; the first microgroove foot 20 includes a first support block 22 and a first fixing seat 21, and the second microgroove foot 30 includes a second support block 32 and a second fixing seat 31; the first fixing seat and the second fixing seat are connected to the side wall of the housing, and the first support block and the second support block are installed at the bottom of the housing; wherein, the unloading direction corresponding to the first microgroove foot is a longitudinal direction perpendicular to the light emission direction corresponding to the housing; the unloading direction corresponding to the second microgroove foot is a transverse direction perpendicular to the light emission direction corresponding to the housing.

[0029] Specifically, the laser support structure proposed in this application addresses the deformation stress of the housing caused by temperature changes and the pointing / power stability issues resulting from the fixed structure through differentiated microgroove feet. Key technical points include: The dual-direction stress relief design utilizes two types of microgroove feet (first microgroove foot and second microgroove foot) to correspond to the longitudinal and transverse stress relief directions perpendicular to the light emission direction, respectively, forming an orthogonal stress relief system. The laser emission direction is taken as the axis (Z-axis), the longitudinal direction is a horizontal direction perpendicular to the Z-axis (e.g., Y-axis), and the transverse direction is another horizontal direction perpendicular to the Z-axis (e.g., X-axis), with the two directions being orthogonal.

[0030] The microgroove foot structure comprises: a first microgroove foot, consisting of a first support block (bottom support) and a first fixed seat (sidewall connection), with stress relief in the longitudinal direction (Y-axis direction). A second microgroove foot, consisting of a second support block (bottom support) and a second fixed seat (sidewall connection), with stress relief in the transverse direction (X-axis direction). The support block and fixed seat achieve stress relief through the "microgroove" structure, allowing for minute expansion / contraction displacement of the shell in the corresponding direction, thus avoiding stress concentration.

[0031] The mounting base is rigidly connected to the side wall of the housing (e.g., fixed with screws), and the support block is in rigid contact with the mounting base surface. However, the microgroove structure retains flexible deformation space in a specific direction to balance the fixing stiffness and stress release requirements.

[0032] The first micro-groove foot (longitudinal stress relief) includes: A first fixed base: mounted on the side wall of the housing, with an elongated micro-groove extending longitudinally (Y-axis), the length of which aligns with the stress relief direction. Screw holes are provided within the micro-groove for connection to the housing side wall via screws. A small gap (0.1-0.3mm) is maintained between the screws and the groove wall to allow for slight longitudinal sliding of the housing. A first support block: mounted on the bottom of the housing, corresponding to the first fixed base, with a flat support surface in contact with the mounting base, providing vertical support. The support block is fixed to the bottom of the housing with screws, or integrated with the first fixed base, ensuring that the support block moves synchronously with the housing during longitudinal displacement.

[0033] The second micro-groove foot (lateral stress relief) includes: a second fixed seat: installed on the other side wall of the housing (orthogonal to the side wall where the first fixed seat is located), with a long strip-shaped micro-groove extending laterally (X-axis), the length of the groove aligned with the stress relief direction. The structural design is similar to the first fixed seat, but the micro-groove direction is changed to lateral, allowing for slight lateral sliding of the housing. A second support block: installed at the bottom of the housing, corresponding to the second fixed seat, with the support surface in contact with the mounting base, providing vertical support and allowing for slight lateral displacement. The micro-groove cross-section is rectangular or arc-shaped, with a depth of 5-10mm and a width designed according to the housing dimensions (e.g., 5-8mm), ensuring sufficient sliding allowance after screw fixing. A single foot can have 1-2 micro-grooves; multiple feet distributed together form multi-point stress relief (e.g., two first micro-groove feet and one second micro-groove foot on each side of the housing).

[0034] The first micro-groove footings are symmetrically arranged along both sides of the shell's longitudinal (Y-axis) sidewalls, with at least one footing, to ensure uniform release of longitudinal stress. The second micro-groove footings are symmetrically arranged along both sides of the shell's transverse (X-axis) sidewalls, with at least one footing, orthogonal to the first footings, forming a two-dimensional stress-relief system. The bottom support blocks are distributed in a one-to-one correspondence with the sidewall fixing seats, forming a three-point or multi-point support structure of "sidewall fixing + bottom support" (e.g., a set of footings is provided at the front and rear ends of the shell).

[0035] The connection steps include: Step 1: Pre-set mounting holes on both side walls of the housing, corresponding to the microgroove positions of the first and second fixing seats. Step 2: Fix the first fixing seat to the longitudinal side wall of the housing with screws, passing the screws through the microgroove, but not tightening them to the limit, leaving a clearance of about 0.1mm. Step 3: Fix the second fixing seat to the transverse side wall of the housing with screws, similarly leaving a transverse clearance. Step 4: Fix the first and second support blocks to the bottom of the housing with screws or adhesive, with the support surface in contact with the mounting base surface (such as an optical platform). Anti-slip pads or fine-tuning mechanisms (not required) can be provided on the bottom of the support blocks.

[0036] The mounting base and support block are made of rigid materials (such as aluminum alloy and stainless steel), while the microgroove area can be locally made of materials with lower elastic modulus (such as titanium alloy) to enhance deformation capacity. High-strength stainless steel screws are selected to prevent corrosion from affecting the sliding performance of the microgroove.

[0037] When the housing expands due to temperature increase or contracts due to temperature decrease, longitudinal deformation is released by the microgroove (Y direction) of the first foot, and lateral deformation is released by the microgroove (X direction) of the second foot, avoiding torsion or bending of the housing due to inconsistent deformation in each direction. The directional sliding characteristics of the microgroove allow the housing to freely expand and contract in the X / Y directions, while restricting rotation around the Z-axis and Z-direction displacement (the light output direction is rigidly fixed), ensuring stable optical path pointing.

[0038] In traditional rigid fixing, the local deformation of the housing caused by the screw tightening force is absorbed by the micro-groove gaps—the screw does not completely restrict the housing's displacement in the X / Y directions, but only provides positioning constraints, preventing the tightening force from being converted into internal stress in the housing. The bottom support block provides rigid support in the vertical direction (Z direction) to ensure that the housing does not sag due to gravity; the side wall fixing seat provides "elastic constraints" in the X / Y directions through micro-grooves, balancing rigid positioning and flexible force relief.

[0039] This invention replaces simple rigid fixing by releasing temperature deformation and locking stress through a microgroove structure, improving directivity and power stability. Compared to complex adjustment systems, it features a simpler structure (only two types of mounting components), lower manufacturing costs, and reduced installation precision requirements (no precision adjustment mechanism needed). The number and layout of the mounting feet can be adjusted according to the housing size, adapting to different laser specifications and offering strong versatility. During later maintenance, individual mounting feet can be independently disassembled and replaced without overall disassembly, improving convenience. Through the above design, this support structure ensures the rigidity of the laser installation while achieving directional release of temperature deformation stress, solving the stability problem caused by environmental changes from a mechanical structural perspective, thus combining practicality and economy.

[0040] In some embodiments, such as Figure 3As shown, the limiting surface of the first support block 22 is a semi-cylindrical structure, and the corresponding installation direction is a transverse direction parallel to the light emission direction. The first support block 22 is connected to the bottom mounting surface of the housing by fixing screws 40, and the mounting surface of the first support block is provided with an inwardly recessed step surface.

[0041] The limiting surface of the first support block adopts a semi-cylindrical structure, and its geometric axis is parallel to the transverse direction of the light output direction (set as the X-axis). The bottom mounting surface is provided with a settling step surface, which is connected to the bottom of the housing by fixing screws.

[0042] First support block: The main body is a block structure, and the top limiting surface is machined into a semi-cylinder. The axis of the cylinder extends horizontally (one of the horizontal directions perpendicular to the Z-axis of the light output direction). The arc surface of the semi-cylinder faces upward and mates with the limiting structure of the first fixing seat. Settlement step surface: An inwardly recessed step (0.5-2mm deep) is made on the bottom mounting surface of the support block (the surface in contact with the bottom of the housing). The stepped area is used for fixing screws to pass through. The screw holes are located inside the step to avoid the screw heads protruding and affecting the flatness of the support surface.

[0043] Connection method: The support block is connected to the pre-drilled screw holes on the bottom of the housing by 2-4 fixing screws passing through the screw holes on the stepped surface. The screw heads are recessed into the step to ensure that the bottom surface of the support block fits tightly against the bottom of the housing, while the semi-cylindrical limiting surface is exposed on the top to cooperate with the first fixing seat. The semi-cylindrical structure allows the housing to rotate or slide slightly in the longitudinal (Y-axis) direction (because the axis is parallel to the X-axis, and the Y-axis is perpendicular to the X / Z direction), releasing longitudinal thermal deformation stress; the recessed stepped surface avoids local stress concentration when the screws are tightened.

[0044] In some embodiments, the limiting surface of the first fixing seat is a V-groove shape structure, which limits and supports the first support block by making line contact with the semi-cylindrical shape structure of the first support block through the V-groove shape structure.

[0045] The limiting surface of the first fixed seat is a V-shaped groove, which forms a line contact limit with the semi-cylinder of the first support block, thereby achieving directional support and release of degrees of freedom through line contact.

[0046] The first fixed seat has a V-shaped groove on its side wall (longitudinal side wall, corresponding to the Y-axis direction). The groove opening faces upward, and the V-angle is usually 90° or 120°. The axis of the groove is parallel to the axis of the semi-cylinder (lateral X-axis direction). The two inclined surfaces of the V-shaped groove form line contact with the outer circle of the semi-cylinder of the first support block (theoretically, two parallel straight lines in contact), and the contact line extends along the X-axis. The line contact allows the housing to make slight displacement or rotation along the Y-axis direction (perpendicular to the X / Z longitudinal direction), while restricting the lateral displacement in the X-axis direction and the light-emitting axial displacement in the Z-axis direction. The rigid constraint of the V-shaped groove provides lateral (X-axis) constraint, and the line contact between the arc surface of the semi-cylinder and the V-shaped groove reduces friction, allowing longitudinal (Y-axis) deformation to be released freely.

[0047] In some embodiments, such as Figure 3 As shown, the first fixing seat 21 has centrally symmetrical screw mounting slots on both sides of its outer facade and centrally symmetrical screw mounting slots on both sides of its bottom surface. The first fixing seat 21 is connected to the side wall of the housing through the slots on its outer facade and the shoulder screws 50. The first fixing seat has a first micro-unloading groove distributed vertically between the inner side of the screw mounting slots on the bottom surface and the outer side of the V-shaped groove structure.

[0048] The first fixed seat is equipped with symmetrical sinkholes and micro-unloading grooves. The shell sidewall is connected by shoulder screws with clearance, and the unloading grooves release their degrees of freedom.

[0049] Screw mounting recessed slots: Symmetrical elongated slots (extending along the transverse X-axis) are provided on both sides of the outer vertical surface of the mounting base (the surface away from the housing). The length direction of the slots is consistent with the unloading direction, and the diameter of the slots is 0.2-0.5mm larger than the diameter of the shoulder screws. Symmetrical slots (extending along the longitudinal Y-axis) are provided on both sides of the bottom surface for connecting the bottom structure. First micro unloading groove: Between the inner side of the slot on the bottom surface and the outer side of the V-shaped groove, 2-3 narrow grooves (width 0.5-1mm, depth 2-5mm) are opened vertically and horizontally in parallel, with the groove direction parallel to the axis of the V-shaped groove (X-axis direction).

[0050] The shoulder screw passes through the waist hole on the vertical surface and connects to the screw hole on the side wall of the housing. A gap (0.1-0.3mm) is reserved between the screw shoulder and the edge of the waist hole to allow the fixing seat to slide slightly along the X-axis. The stress relief groove weakens the local stiffness of the fixing seat, so that when the lateral (X-axis) deformation occurs, the stress is released through the elastic deformation of the groove, avoiding transmission to the housing.

[0051] In some embodiments, the direction of the first micro-unloading groove is parallel to the V-shaped groove structure, and an inwardly sinking step surface is provided directly below the V-shaped groove structure.

[0052] The first micro-unloading groove is parallel to the V-shaped groove (lateral X-axis), and a settlement step surface is set below the V-shaped groove to enhance the release of lateral stress and positioning accuracy.

[0053] The stress-relieving grooves extend along the X-axis, perfectly parallel to the axis of the V-shaped grooves. There are 2-4 grooves spaced 5-10mm apart, with a depth penetrating 1 / 3-1 / 2 of the mounting base thickness, providing sufficient strength while maintaining flexible deformation capability. The elastic deformation of the grooves absorbs thermal deformation stress. An inwardly recessed step (1-3mm deep) is created on the bottom surface of the mounting base directly below the V-shaped grooves. The step surface contacts the sidewall of the housing, ensuring precise line contact between the V-shaped grooves and the semi-cylinder, preventing the mounting base from tilting due to screw fastening.

[0054] In some embodiments, such as Figure 4As shown, the limiting surface of the second support block 32 is a semi-cylindrical structure, and the corresponding installation direction is along the longitudinal direction perpendicular to the light emission direction. The second support block 32 is connected to the bottom mounting surface of the housing by fixing screws 40. The mounting surface of the second support block 32 is provided with an inwardly recessed step surface.

[0055] The limiting surface of the second support block is a semi-cylindrical structure with its axis along the longitudinal direction (Y-axis, another horizontal direction perpendicular to the light emission direction). The bottom is provided with a settling step surface, which connects to the bottom of the shell.

[0056] The difference between this second support block and the first support block lies in the direction of the semi-cylindrical axis: the semi-cylindrical axis of the second support block extends along the longitudinal Y-axis (perpendicular to the X / Z axes), with the arc surface of the limiting surface facing upwards, corresponding to the V-groove limiting of the second fixing seat; the bottom settling step surface structure is the same as the first support block, with screw holes located within the step to avoid stress concentration during locking. The semi-cylindrical axis along the Y-axis allows for slight displacement or rotation of the housing in the lateral (X-axis) direction, releasing lateral thermal deformation stress and forming an orthogonal stress-relief system with the X-axis limiting of the first support block.

[0057] In some embodiments, the limiting surface of the second fixing seat is a V-groove shape structure, which provides limiting support through line contact between the V-groove shape structure and the semi-cylindrical shape structure of the second support block.

[0058] The limiting surface of the second fixed seat is a V-shaped groove, which contacts the semi-cylindrical line of the second support block to achieve limiting and release of degrees of freedom.

[0059] The second fixing seat is installed on the transverse side wall of the housing (corresponding to the side wall in the X-axis direction). The axis of the V-shaped groove of the limiting surface extends along the longitudinal Y-axis and is consistent with the semi-cylindrical axis of the second support block. The inclined surfaces on both sides of the V-shaped groove form line contact with the outer circle of the semi-cylindrical circle, and the contact line extends along the Y-axis, allowing the housing to make slight displacement in the X-axis direction (lateral stress relief) and restricting longitudinal displacement in the Y-axis direction and axial displacement in the Z-axis direction. The first fixing seat controls longitudinal (Y-axis) stress relief, and the second fixing seat controls transverse (X-axis) stress relief. The two work together to form a two-dimensional stress release.

[0060] In some embodiments, such as Figure 4 As shown, the second fixing seat 31 has centrally symmetrical screw mounting slots on both sides of the outer facade and centrally symmetrical screw mounting slots on both sides of the bottom surface. The second fixing seat 31 is connected to the side wall of the housing through the slots on the outer facade and the shoulder screws 50. The second fixing seat has a second micro-unloading groove distributed vertically between the inner side of the screw mounting slots on the bottom surface and the outer side of the V-shaped groove structure.

[0061] The second fixed seat is equipped with symmetrical sinkholes and micro-unloading grooves. The shell sidewall is connected by shoulder screws with clearance, and the unloading grooves release their degrees of freedom.

[0062] The outer facade waist hole extends along the longitudinal Y-axis (different from the X-axis direction of the first fixing seat), and the bottom facade waist hole extends along the transverse X-axis; the second micro stress relief groove is located between the inner side of the bottom facade waist hole and the outer side of the V-shaped groove, with the groove direction parallel to the axis of the V-shaped groove (Y-axis direction), and there are 2-3 grooves, with the same size as the stress relief groove in embodiment 3. The shoulder screw passes through the facade waist hole (Y-axis direction), allowing the fixing seat to slide slightly along the Y-axis. The stress relief groove releases the longitudinal (Y-axis) thermal deformation stress through elastic deformation, preventing the shell from twisting due to longitudinal expansion.

[0063] In some embodiments, the direction of the second micro-unloading groove is parallel to the V-shaped groove structure, and an inwardly sinking step surface is provided directly below the V-shaped groove structure.

[0064] The second micro-unloading groove is parallel to the V-shaped groove (longitudinal Y-axis), and a settling step surface is provided below the V-shaped groove to enhance longitudinal stress release and positioning accuracy. Details of the unloading groove and step surface: The unloading groove extends along the Y-axis and is aligned with the axis of the V-shaped groove of the second fixing seat, releasing degrees of freedom and allowing the shell to unload stress through the deformation of the groove during longitudinal expansion and contraction; the settling step surface directly below the V-shaped groove ensures the flatness of the contact surface between the fixing seat and the side wall of the shell, preventing the V-shaped groove from shifting due to screw tightening force and ensuring the line contact accuracy with the semi-cylinder of the second support block.

[0065] In some embodiments, the number of the first microgroove feet is greater than the number of the second microgroove feet.

[0066] By having more first microgroove feet than second microgroove feet, longitudinal stress relief is optimized through an asymmetrical layout (because the laser may be subject to greater temperature deformation in the longitudinal direction).

[0067] Layout design: For example, two first microgroove feet are provided on each side of the shell in the longitudinal direction (Y-axis direction), and one second microgroove foot is provided on each side in the transverse direction (X-axis direction), forming a "2 to 1" ratio. The first feet are distributed at the front, rear, or middle of the shell, while the second feet are concentrated in the middle or areas with weaker rigidity. If the shell undergoes more significant temperature deformation in the longitudinal direction (e.g., the length direction), increasing the number of first feet can provide multi-point longitudinal stress relief and avoid single-point stress concentration; if the transverse (width direction) deformation is smaller, reducing the number of feet can simplify the structure and reduce costs.

[0068] In some embodiments, the number of first microgroove feet is 2, and the number of second microgroove feet is 1.

[0069] Two first microgroove feet are provided on each of the longitudinal sides of the housing (two in total), located at the bottom of the front and rear ends of the housing respectively, corresponding to the fixing seats on the longitudinal sidewalls; one second microgroove foot is provided on one side of the housing (or 0.5 on each side, actually one symmetrical layout), located at the bottom of the middle part of the housing, corresponding to the fixing seat on the transverse sidewall.

[0070] Two first feet provide longitudinal stress relief at both ends to prevent the housing from bending longitudinally due to temperature changes; one second foot simplifies the lateral structure, reducing the number of parts and installation complexity while meeting the lateral stress relief requirements.

[0071] Please refer to Figure 7 This application provides a method for optimizing the parameters of microgroove feet for supporting a laser, applied to a control module. Specifically, as shown in the embodiments below... Figure 7 As shown, the provided method for optimizing the parameters of the microgroove foot for supporting a laser includes steps S101 to S104, used to optimize the laser support structure based on microgroove feet as provided in any embodiment of this application. Details are as follows: Step S101. Determine the optimization objective, which is to enable the stress relief groove of the microgroove foot to effectively absorb and release the deformation of the fixing screw and the deformation of the shell in the lateral direction caused by changes in ambient temperature; establish a three-dimensional model including the shell, the fixing seat and the support block, wherein the stress relief groove of the fixing seat is parallel to the V-shaped groove structure of the laser, and the stress relief groove is a slotted structure with vertical spacing.

[0072] Specifically, the optimization focuses on enabling the stress-relieving grooves of the microgroove foot to effectively achieve two core functions: absorbing deformation caused by the fixing screws: preventing localized stress concentration in the fixing seat due to screw tightening force, which could then be transmitted to the laser housing and cause deformation. Releasing lateral temperature deformation of the housing: when the ambient temperature changes, the housing undergoes thermal expansion or contraction in the lateral direction perpendicular to the light output direction (such as the X-axis). The stress-relieving grooves need to provide sufficient flexible deformation space to prevent stress accumulation that could lead to housing distortion or optical path misalignment.

[0073] Based on the preliminary technical solutions, the stress relief groove design must meet the following constraints: Directional constraint: The stress relief groove direction must be parallel to the V-shaped groove structure of the fixed base (e.g., the transverse stress relief groove is parallel to the X-axis, and the longitudinal stress relief groove is parallel to the Y-axis) to ensure that the stress release direction is consistent with the design objective. Structural constraint: The stress relief groove is a slotted structure with vertically spaced grooves (e.g., 2-4 narrow grooves). By weakening the local stiffness of the fixed base, a controllable flexible area is formed, while retaining sufficient strength to prevent fracture.

[0074] The 3D model construction includes: Modeling objects: a complete assembly containing the laser housing, mounting bases (first / second mounting bases), and support blocks (first / second support blocks), focusing on depicting the stress relief groove structure of the mounting base (e.g., rectangular grooves, with a depth penetrating 1 / 3 to 1 / 2 of the mounting base thickness), V-shaped groove limiting surfaces, screw mounting countersunk holes, and the semi-cylindrical limiting surfaces of the support blocks. Modeling tools: Parametric modeling using CAD software (e.g., SolidWorks, UG NX) to ensure that the geometric dimensions are consistent with the actual machining accuracy (e.g., microgroove width 0.5-1mm, depth 2-5mm, interval 5-10mm). Material definition: The mounting bases and support blocks are made of rigid materials (e.g., aluminum alloy 6061, stainless steel 304). Materials with lower elastic modulus (e.g., titanium alloy TC4) can be preset in local stress relief groove areas to enhance deformation capacity. The housing material matches the actual laser material (e.g., aluminum alloy). Boundary conditions: The mounting base is connected to the side wall of the housing by screws (simulating clearance fit, with a 0.1-0.3mm gap reserved between the screw hole and the waist hole), the bottom surface of the support block is in rigid contact with the mounting base surface, and a vertical support force is applied to the bottom of the housing.

[0075] Step S102. Set the parameter range for the stress relief grooves. The parameters include the number of stress relief grooves, the length, width, and depth of a single stress relief groove, and the spacing between the upper and lower stress relief grooves. Use finite element simulation to perform mechanical analysis on the fixed seat under different parameter combinations, obtaining stress distribution and deformation data for each parameter combination during the fixing screw fastening process and when the shell undergoes lateral deformation due to changes in ambient temperature. Specifically, the core optimization parameters and their typical ranges are as follows (based on experience from previous embodiments): The finite element simulation implementation includes: Simulation tools: General-purpose finite element software such as ANSYS Mechanical and Abaqus is used to perform mechanical analysis on the fixed base and surrounding structure. Mesh generation: Local mesh refinement (element size ≤ 0.5mm) is performed on detailed areas such as the stress relief groove to ensure the calculation accuracy of stress concentration areas; the overall mesh adopts a hexahedral dominant mesh, controlling the total number of elements to be between 100,000 and 500,000.

[0076] Load and boundary conditions: Screw fastening condition: Apply screw preload Fs at the countersunk hole of the fixed seat to simulate the clearance constraint when the screw is not fully tightened (allowing a small amount of sliding along the unloading direction) and constrain the degree of freedom of the shell sidewall (only releasing the displacement in the target unloading direction).

[0077] Temperature deformation condition: A uniform temperature load ΔT is applied to the shell. Through thermo-structural coupling analysis, the thrust on the fixed seat during the lateral expansion / contraction of the shell is calculated. The stress relief groove of the fixed seat needs to absorb this deformation energy.

[0078] Analysis types include: Static structural analysis: calculating the stress distribution caused by screw locking force and identifying stress concentration points in the contact area between the fixing seat and the shell. Thermal-structural coupling analysis: simulating shell deformation caused by temperature changes and evaluating whether the deformation of the stress relief groove in the lateral direction meets the design clearance requirements (e.g., 0.1-0.3mm).

[0079] Step S103. Analyze the stress distribution and deformation data obtained from the simulation according to the preset stress threshold and deformation threshold, and obtain the parameter combination that enables the stress relief groove to effectively absorb and release the deformation of the fixing screw and the lateral temperature deformation of the shell; the parameter combination includes the number of stress relief grooves that are parallel to the V-shaped groove structure and distributed vertically at intervals, the length, width, and depth of a single stress relief groove, and the interval distance between the upper and lower stress relief grooves.

[0080] Specifically, the stress thresholds include: the stress in the main body area of ​​the fixed seat (excluding the stress relief groove area) must be lower than 80% of the material's yield strength (e.g., aluminum alloy 6061 has a yield strength of 276 MPa, so the threshold is set at 220 MPa) to avoid permanent deformation. The stress at the edge of the stress relief groove can exceed the yield strength for a short period, but must be controlled within 70% of the ultimate strength (to avoid fracture).

[0081] The deformation thresholds include: the free deformation of the stress relief groove in the target direction (e.g., the transverse X-axis) must cover the maximum expected thermal deformation of the housing (e.g., 0.5mm), while limiting displacement in non-target directions (e.g., the longitudinal Y-axis and the axial Z-axis) to ≤0.05mm (to ensure stable optical path pointing). When tightening the screws, the gap between the fixing seat and the housing must be controlled between 0.1-0.3mm to avoid excessive gap leading to positioning failure.

[0082] Stress distribution analysis: The equivalent plastic strain (PEEQ) around the stress relief groove is extracted through post-processing. If the PEEQ exceeds 0.01 (significant plastic deformation) under a certain parameter combination, that combination is excluded. Special attention is paid to whether there is stress concentration at the root of the stress relief groove (e.g., stress > 300 MPa). If so, the groove depth or width is adjusted. Deformation matching: The lateral thermal deformation of the shell is compared with the maximum allowable deformation of the stress relief groove, ensuring that the former is ≤ the latter (e.g., when the shell deformation is 0.5 mm, the free travel of the stress relief groove in the X-axis direction must be ≥ 0.5 mm). Simultaneously, check whether the gap between the V-groove and the semi-cylindrical support block is too large due to deformation (e.g., if the contact line offset is > 0.1 mm, optimization is required).

[0083] The multi-objective optimization method employs orthogonal experimental design (DOE) to reduce the number of simulations. For example, 27 sets of experiments are designed by selecting 3 levels and 4 factors (number, length, width, and depth). A parameter-performance mapping model is constructed by combining response surface methodology (RSM) to select the optimal combination that balances low stress and sufficient deformation (e.g., 2 stress relief grooves, 0.8 mm width, 4 mm depth, and 8 mm spacing).

[0084] The selected parameter combinations need to be tested through a prototype to verify the actual stress release effect (e.g., by measuring the strain on the surface of the fixed base through strain gauges) and the stability of the optical path pointing (e.g., by measuring the spot offset in temperature cycling tests), and finally form an optimized parameter table that can be mass-produced.

[0085] In some embodiments, if multiple parameter combinations are obtained, the method further includes: calculating the processing difficulty and material strength retention rate of the stress relief groove corresponding to each parameter combination, and obtaining the target parameter combination based on preset functional indicators, processing feasibility indicators and structural strength indicators.

[0086] After obtaining multiple parameter combinations, processing difficulty and material strength retention rate are introduced as screening indicators. The combination of three types of indicators—functionality, processing feasibility, and structural strength—is used to comprehensively evaluate and ensure that the parameter combinations take into account performance, processing cost, and structural reliability.

[0087] The indicators include: Functional indicators: assessing the ability of the stress relief groove to absorb screw locking deformation and release thermal deformation of the shell (e.g., deformation coverage, stress concentration). Machining feasibility indicators: quantifying the difficulty based on the required tool specifications (e.g., precision tools are needed for narrow grooves less than 1mm) and process complexity (e.g., multiple cuts are needed for deep grooves). Structural strength indicators: assessing the strength retention rate through material removal rate (stress relief groove volume / fixed seat volume) and residual structural stress concentration coefficient.

[0088] Data acquisition calculates machining parameters such as minimum tool diameter, depth of cut, and machining time for each parameter combination; calculates material removal rate (e.g., for a groove with a depth of 5mm and a width of 1mm, removal rate = groove volume / fixed seat volume × 100%), and combines it with the simulated stress concentration factor (e.g., Kt>3 is considered high risk).

[0089] Multi-indicator fusion establishes a three-dimensional coordinate system (functionality, processing feasibility, structural strength), and uses radar charts or weighted formulas to screen equilibrium solutions, excluding combinations that are too difficult to process (such as requiring wire cutting) or have insufficient strength (material removal rate >30%).

[0090] In some embodiments, obtaining the target parameter combination based on preset functional indicators, processing feasibility indicators, and structural strength indicators includes: assigning weights to the functional indicators, processing feasibility indicators, and structural strength indicators respectively, wherein the weight of the functional indicators is higher than that of the processing feasibility indicators and structural strength indicators; for each parameter combination, calculating a functional score based on the ability of the stress relief groove to absorb and release deformation, calculating a processing feasibility score based on the tool specifications and processing complexity required for processing the stress relief groove, and calculating a structural strength score based on the material removal rate and the stress concentration degree of the remaining structure; weighting and summing the scores according to preset weights to obtain a comprehensive score for each parameter combination; and selecting the parameter combination with the highest comprehensive score as the target parameter combination.

[0091] The importance of the three types of indicators is quantified by weight allocation (functionality has the highest weight). The scores of each indicator are calculated separately and then summed with weights to maximize the overall score and select the optimal solution.

[0092] The weighting settings include: functional indicators weight: 50%~60% (core objectives); processing feasibility indicators weight: 20%~30% (considering mass production costs); structural strength indicators weight: 20%~30% (to avoid the risk of breakage).

[0093] The scoring calculation includes: Functionality score: calculated based on deformation matching degree (e.g., thermal deformation coverage = actual deformation / required deformation × 100%) and stress compliance rate (percentage of areas with stress ≤ threshold), with a maximum score of 100 points; Machining feasibility score: scored inversely based on tool cost (10-20 points deducted for precision tools) and number of processes (5 points deducted for each additional process), with a maximum score of 100 points; Structural strength score: scored in a positive direction based on material removal rate (20 points deducted for >30%) and stress concentration coefficient (15 points deducted for Kt>3), with a maximum score of 100 points. Comprehensive optimization: Formula: Comprehensive score = Functionality score × weight + Machining feasibility score × weight + Structural strength score × weight; Example: A combination has a functionality score of 90 (weight 60%), a machining feasibility score of 80 (weight 25%), and a structural strength score of 85 (weight 15%), with a comprehensive score of 90 × 0.6 + 80 × 0.25 + 85 × 0.15 = 86.75. The combination with the highest score is selected.

[0094] In some embodiments, after obtaining the parameter combination that enables the stress relief groove to effectively absorb and release the deformation of the fixing screw and the lateral temperature deformation of the shell, the method further includes: inputting the parameter combination into the three-dimensional model for secondary simulation verification to confirm that the stress and deformation of the stress relief groove under the scenarios of fixing screw and lateral temperature deformation of the shell meet the preset threshold requirements; if the secondary simulation verification is successful, the optimized parameters are determined as the final parameters of the fixed seat stress relief groove.

[0095] The selected parameter combinations are verified by secondary simulation to ensure that the stress and deformation meet the preset threshold under actual working conditions, thus avoiding design failure caused by simulation errors.

[0096] The model update generates accurate geometry (accuracy ±0.01mm) by inputting optimized parameters (such as the number of slots n=2 and the width w=0.8mm) into the 3D model.

[0097] Load application includes: screw fastening condition: apply actual fastening force (e.g., M3 screw preload 100N) to simulate the contact constraint between the shaft shoulder and the countersunk groove; thermal deformation condition: apply extreme temperature load (e.g., ΔT=+50℃), calculate the lateral expansion of the shell (e.g., 0.6mm) and convert it into displacement load.

[0098] The results were compared by extracting the maximum stress at the root of the stress relief groove (if the threshold of 200MPa≤220MPa is passed); verifying the lateral deformation (if 0.6mm≤allowable stroke0.7mm is passed), and checking whether the longitudinal deformation is ≤0.05mm (to avoid exceeding the displacement in non-target directions).

[0099] In some embodiments, the step of inputting the parameter combination into the three-dimensional model for secondary simulation verification to confirm that the stress and deformation of the stress relief groove meet the preset threshold requirements under the scenarios of fixed screw fastening and shell lateral temperature deformation includes: inputting the number of stress relief grooves, the length, width, depth, and vertical spacing of a single stress relief groove corresponding to the selected parameter combination into the three-dimensional model to generate a fixed seat model containing the optimized stress relief groove structure; applying a load equivalent to the actual fastening force to the model under the fixed screw fastening scenario, and applying a thermal expansion load corresponding to a preset temperature change range to the model under the shell lateral temperature deformation scenario; running finite element simulation calculations to obtain stress distribution cloud maps and deformation data of the stress relief groove area; comparing the maximum stress value obtained from the finite element simulation with the preset stress threshold, and comparing the maximum value corresponding to the deformation data with the preset deformation threshold; if neither exceeds the corresponding threshold, the secondary simulation verification is deemed successful.

[0100] By clearly defining the input parameters, load types, and verification standards for secondary simulation, we can ensure that the quantitative indicators are traceable.

[0101] Parameter input is achieved by accurately inputting the geometric parameters of the unloading groove (quantity, length, width, depth, and spacing), such as n=2, L=20mm, w=0.8mm, h=4mm, and d=8mm.

[0102] The simulation settings include: Mesh: The edge of the unloading groove uses a 0.2mm tetrahedral mesh, and other areas use a 0.5mm hexahedral mesh, with a total of 300,000+ elements; Contact: Frictional contact is defined between the fixed seat and the shell (friction coefficient 0.3), and the screw holes and screws are defined with clearance fit (0.2mm radial clearance).

[0103] The threshold determination includes: stress threshold: for aluminum alloy 6061, take 80% of the yield strength of 276MPa, i.e., 220MPa. The simulation maximum value is 215MPa≤220MPa, so the determination is passed; deformation threshold: the lateral target stroke is 0.5mm. The simulation result is 0.52mm≥0.5mm and the longitudinal displacement is 0.03mm≤0.05mm, so the determination is passed.

[0104] In some embodiments, determining the optimization objective, which is to enable the stress relief groove of the microgroove foot to effectively absorb and release the deformation caused by the fixing screw and the deformation of the shell in the lateral direction due to changes in ambient temperature, includes: analyzing the direction and range of local compression deformation caused by the tightening torque during the fixing screw tightening process, and the direction and range of lateral deformation of the shell caused by the thermal expansion and contraction of the material within a preset temperature change range; clarifying that the deformation absorption capacity required by the stress relief groove should cover the direction and range of the above two types of deformation, and ensuring that the stress concentration at the connection interface between the fixing seat and the shell is lower than the critical value that leads to structural failure.

[0105] By analyzing the direction, range, and critical stress of the two types of deformation, the core performance requirements of the stress relief groove design are clarified.

[0106] Deformation analysis includes: Screw fastening deformation: Tightening torque causes local compression of the fixing seat, and the deformation is calculated using thread mechanics formulas (e.g., when the preload of an M4 screw is 200N, the compression deformation in the contact area is 0.05mm); Thermal deformation: Based on the shell material (aluminum alloy), length (500mm), and temperature range (-20~+50℃), the maximum lateral deformation ΔL = 500 × 23 × 10 is calculated. -6 ×70=0.805mm.

[0107] The critical value settings include: stress critical value: take 60% of the material's ultimate strength (to avoid fatigue failure), such as stainless steel 304 with an ultimate strength of 520MPa and a critical value of 312MPa; deformation coverage requirements: the free stroke of the stress relief groove must be ≥ thermal deformation + locking deformation (0.805 + 0.05 = 0.855mm), with a 20% safety margin reserved (target stroke ≥ 1.026mm).

[0108] In some embodiments, the method is used to optimize a laser support structure based on a microgroove foot, including at least one first microgroove foot and at least one second microgroove foot; the first microgroove foot includes a first support block and a first fixing seat, and the second microgroove foot includes a second support block and a second fixing seat; the first fixing seat and the second fixing seat are connected to the side wall of the housing, and the first support block and the second support block are mounted on the bottom of the housing; wherein, the force-relieving direction corresponding to the first microgroove foot is a longitudinal direction perpendicular to the light-emitting direction corresponding to the housing; the force-relieving direction corresponding to the second microgroove foot is a transverse direction perpendicular to the light-emitting direction corresponding to the housing; Establishing a three-dimensional model including the shell, fixed base, and support block includes: constructing a three-dimensional model of the shell according to the actual size parameters of the shell, and reserving installation interfaces for the fixed base and support block on the side wall and bottom mounting surface of the shell respectively; constructing three-dimensional models of the first fixed base, the second fixed base, the first support block, and the second support block, wherein the V-shaped groove structure of the first fixed base and the second fixed base, the semi-cylindrical structure of the first support block and the second support block, and the slotting direction and distribution of the stress relief groove are all modeled according to the actual design requirements; in the three-dimensional model, assembling the first fixed base and the second fixed base to the shell through the side wall mounting interface, and the first support block and the second support block to the shell through the bottom mounting interface.

[0109] For the dual microgroove foot structure (first / second fixed seat), the modeling points and assembly relationships for different unloading directions (longitudinal / lateral) are clarified.

[0110] Structural division of labor: First micro-groove foot (longitudinal stress relief): The fixed seat V-groove is along the Y-axis, and the stress relief groove is parallel to the Y-axis, absorbing the longitudinal thermal deformation of the shell; Second micro-groove foot (lateral stress relief): The fixed seat V-groove is along the X-axis, and the stress relief groove is parallel to the X-axis, releasing the lateral thermal deformation of the shell.

[0111] Model Construction: Shell: Modeled according to actual dimensions (e.g., 500mm long, 100mm wide), with pre-drilled mounting holes (slender holes, with the long axis along the unloading direction) on the side walls; Support Block: The bottom semi-cylindrical surface contacts the mounting base surface, with a semi-cylindrical diameter of φ20mm, restricting the shell from rotating around the Z-axis; Assembly Constraints: The mounting base is connected to the shell by M3 screws, with a 0.2mm gap between the screw holes and the slender holes, allowing free sliding in the unloading direction.

[0112] In some embodiments, setting the parameter range of the stress relief groove includes: determining the range of the slottable area of ​​the stress relief groove based on the overall size of the fixed seat and the position of the V-shaped groove structure; controlling the number of stress relief grooves within a preset integer range, setting the length of a single stress relief groove to no more than 80% of the length of the slottable area, setting the depth to no more than 50% of the wall thickness of the fixed seat, and setting the interval between the upper and lower stress relief grooves to 1 to 3 times the width of a single stress relief groove; and discretizing the value range of each parameter into integers or decimals to form a set of parameter combinations that can be used for simulation calculations.

[0113] Based on the geometry of the fixed seat and the manufacturing process, the feasible range of the unloading groove parameters is limited to avoid the design exceeding manufacturing capabilities.

[0114] Geometric constraints: Groovable area: Based on the wall thickness of the fixed seat (e.g., 10mm) and the position of the V-groove, the middle 50% area is designated as the grooved area (40mm long and 8mm wide). Size restrictions: Length L ≤ 80% of the slotted area length (40 × 0.8 = 32 mm, take 20~30 mm); Depth h ≤ 50% of the wall thickness (10 × 0.5 = 5 mm, take 2~5 mm); Spacing d = 1~3 times the slot width (e.g., if w = 0.8 mm, d = 0.8~2.4 mm, rounding to 1~2 mm does not conform to engineering, the actual value is 5~10 mm, the original logic needs to be corrected, here it should be spacing ≥ 1 times the slot width and ≤ 3 times, e.g., when w = 0.5 mm, d = 0.5~1.5 mm, combined with engineering, take 5~10 mm, the original spacing unit may be mm, needs to be clarified).

[0115] Discretization includes: quantity n: 2, 3, 4 (integer); width w: 0.5, 0.8, 1.0 mm (0.1 mm increments, matching precision machining capabilities); generating orthogonal experimental tables (such as L9(3 4 (), which includes 9 sets of parameter combinations.

[0116] In some embodiments, the finite element simulation method is used to perform mechanical analysis on the fixed seat under different parameter combinations, and to obtain the stress distribution and deformation data of the fixed seat under each parameter combination during the fixing screw fastening process and when the shell undergoes lateral deformation due to changes in ambient temperature. This includes: meshing the fixed seat model containing different unloading groove parameters, and refining the mesh in the V-groove limiting surface, screw mounting hole area, and unloading groove edge; in the fixing screw fastening scenario simulation, applying an axial preload load to the screw mounting groove waist hole to simulate the fastening process of the shoulder screw; in the shell lateral temperature deformation scenario simulation, applying a lateral displacement load to the bottom mounting surface of the shell to simulate the shell deformation caused by temperature changes; setting the calculation accuracy and convergence conditions of the simulation solver, running the mechanical analysis calculation, and obtaining the maximum stress value, stress concentration location, and relative deformation of the interface between the fixed seat and the shell under each parameter combination.

[0117] By refining the mesh and simulating the load, the simulation accuracy is improved, and key mechanical data of the unloading groove area are obtained.

[0118] Mesh generation includes: Unloading groove edge: 0.2mm tetrahedral mesh, automatically refined in areas with large curvature; Screw hole contact area: 0.3mm hexahedral mesh, ensuring the accuracy of preload transmission; Mesh quality: aspect ratio ≤ 5, Jacobian determinant ≥ 0.7, to avoid calculation divergence.

[0119] The load application includes: Locking condition: simulating an M3 screw (nominal diameter 3mm, preload coefficient 0.2, torque T=0.2×F×d=0.2×100×3=60N·mm) through the "bolt preload" unit; Thermal deformation condition: applying a lateral displacement load (ΔX=1.0mm, covering maximum thermal deformation + margin) to the bottom of the shell, constraining the Y and Z degree of freedom of the bottom.

[0120] The solution settings include: Solver: ANSYS Mechanical implicit solver, with large deformation switch enabled (considering the flexible deformation of the unloading groove); convergence conditions: force residual ≤ 1e-5N, displacement residual ≤ 1e-6mm, ensuring convergence of the nonlinear contact problem.

[0121] In some embodiments, the step of analyzing the stress distribution and deformation data obtained from the simulation based on preset stress thresholds and deformation thresholds to obtain parameter combinations that enable the stress relief groove to effectively absorb and release the deformation of the fixing screw and the lateral temperature deformation of the shell includes: establishing screening conditions so that the maximum stress in the stress relief groove area under the fixing screw scenario does not exceed 70% of the material yield strength, and the relative deformation between the fixing seat and the shell under the lateral temperature deformation scenario does not exceed 0.1 mm; traversing the simulation data of each parameter combination, and screening out parameter combinations that simultaneously meet the above two conditions as candidate effective parameter combinations.

[0122] By establishing clear stress-deformation dual threshold screening conditions, high-risk parameter combinations can be excluded, and effective solutions can be quickly located.

[0123] The screening criteria include: stress conditions: the maximum stress of the stress relief groove under the locking condition is ≤ 70% of the material's yield strength (e.g., TC4 titanium alloy yield strength is 830MPa, threshold is 581MPa); deformation conditions: the relative displacement between the fixed seat and the shell under the thermal deformation condition is ≤ 0.1mm (to ensure the optical path pointing accuracy is ±50μrad).

[0124] Data traversal automatically reads simulation result files (.rst) through a development script, extracting the maximum stress at nodes and the relative displacement of the contact surface; for example: a certain combination of locking stress 550MPa≤581MPa and thermal deformation displacement 0.08mm≤0.1mm is included as a candidate; another combination of stress 600MPa>581MPa is directly excluded.

[0125] The candidate set generation further analyzes the stress distribution uniformity (e.g., the smaller the stress standard deviation, the better) and deformation symmetry (lateral / longitudinal displacement ratio ≥ 10:1) of the selected combinations to ensure the directional stress relief effect.

[0126] This invention, by defining the groove orientation as parallel to the V-shaped groove structure and spaced vertically, and combining simulation analysis, enables the stress-relieving groove to accurately absorb the deformation of the fixing screws and the lateral temperature deformation of the shell, thus avoiding structural failure caused by stress concentration. By setting parameter ranges for the number, size, and spacing of the stress-relieving grooves, and combining finite element simulation and threshold screening, comprehensive optimization of functionality, fabrication feasibility, and structural strength is achieved, improving design reliability. Through a standardized process of 3D modeling, simulation analysis, and secondary verification, parameter optimization is automated and precise, reducing trial-and-error costs and improving design efficiency.

[0127] Please see Figure 8 , Figure 8 This is a schematic block diagram of the control module provided in an embodiment of this application. The control module includes a processor, a memory, and a network interface connected via a device bus, wherein the memory may include a storage medium and internal memory.

[0128] The storage medium can store operating devices and computer programs. The computer program includes program instructions that, when executed, cause the processor to perform any method for optimizing the microgroove foot parameters used to support the laser.

[0129] The processor provides computing and control capabilities to support the operation of the entire control module.

[0130] The internal memory provides an environment for the execution of computer programs in non-volatile storage media. When executed by a processor, the computer program can enable the processor to perform any method for optimizing the microgroove pin parameters used to support the laser.

[0131] This network interface is used for network communication, such as sending assigned tasks. Those skilled in the art will understand that... Figure 8 The structure shown is merely a block diagram of a portion of the structure related to the solution of this application and does not constitute a limitation on the terminal to which the solution of this application is applied. The specific control module may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.

[0132] It should be understood that the processor can be a Central Processing Unit (CPU), but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among these, a general-purpose processor can be a microprocessor or any conventional processor.

[0133] In one embodiment, the processor is configured to run a computer program stored in memory to perform the following steps: The optimization objective is to enable the stress relief groove of the microgroove foot to effectively absorb and release the deformation of the fixing screw and the deformation of the shell in the lateral direction caused by changes in ambient temperature. A three-dimensional model including the shell, the fixing seat and the support block is established, wherein the stress relief groove of the fixing seat is parallel to the V-shaped groove structure of the laser, and the stress relief groove is a slotted structure with vertical spacing. The parameter range of the stress relief groove is set, including the number of stress relief grooves, the length, width, and depth of a single stress relief groove, and the spacing between the upper and lower stress relief grooves; the finite element simulation method is used to perform mechanical analysis on the fixed seat under different parameter combinations, and the stress distribution and deformation data of the fixed seat under each parameter combination during the fixing screw fastening process and when the shell undergoes lateral deformation due to changes in ambient temperature are obtained; Based on the preset stress threshold and deformation threshold, the stress distribution and deformation data obtained from the simulation are analyzed to obtain the parameter combination that enables the stress relief groove to effectively absorb and release the deformation of the fixing screw and the lateral temperature deformation of the shell. The parameter combination includes the number of stress relief grooves that are parallel to the V-shaped groove structure and distributed vertically at intervals, the length, width, and depth of a single stress relief groove, and the interval distance between the upper and lower stress relief grooves.

[0134] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, causes the processor to implement the steps of the microgroove foot parameter optimization method for supporting a laser as provided in any embodiment of this application.

[0135] The computer-readable storage medium can be an internal storage unit of the control module described in the foregoing embodiments, such as the hard disk or memory of the control module. Alternatively, the computer-readable storage medium can be an external storage device of the control module, such as a plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card, or Flash Card equipped on the control module.

[0136] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for optimizing the parameters of microgroove feet used to support a laser, characterized in that, include: The optimization objective is to enable the stress relief groove of the microgroove foot to effectively absorb and release the deformation of the fixing screw and the deformation of the shell in the lateral direction caused by changes in ambient temperature. A three-dimensional model including the shell, the fixing seat and the support block is established, wherein the stress relief groove of the fixing seat is parallel to the V-shaped groove structure of the laser, and the stress relief groove is a slotted structure with vertical spacing. The parameter range of the stress relief groove is set, including the number of stress relief grooves, the length, width, and depth of a single stress relief groove, and the spacing between the upper and lower stress relief grooves; the finite element simulation method is used to perform mechanical analysis on the fixed seat under different parameter combinations, and the stress distribution and deformation data of the fixed seat under each parameter combination during the fixing screw fastening process and when the shell undergoes lateral deformation due to changes in ambient temperature are obtained; Based on the preset stress threshold and deformation threshold, the stress distribution and deformation data obtained from the simulation are analyzed to obtain the parameter combination that enables the stress relief groove to effectively absorb and release the deformation of the fixing screw and the lateral temperature deformation of the shell. The parameter combination includes the number of stress relief grooves that are parallel to the V-shaped groove structure and distributed vertically at intervals, the length, width, and depth of a single stress relief groove, and the interval distance between the upper and lower stress relief grooves.

2. The method according to claim 1, characterized in that, If multiple combinations of the parameters are obtained, the method further includes: Calculate the processing difficulty and material strength retention rate of the stress relief groove corresponding to each parameter combination, and obtain the target parameter combination based on the preset functional indicators, processing feasibility indicators and structural strength indicators.

3. The method according to claim 2, characterized in that, The process of obtaining the target parameter combination based on preset functional indicators, processing feasibility indicators, and structural strength indicators includes: Weights are assigned to the functional indicators, processing feasibility indicators, and structural strength indicators, with the weight of the functional indicators being higher than that of the processing feasibility indicators and structural strength indicators. For each parameter combination, the functional score is calculated based on the ability of the stress relief groove to absorb and release deformation, the processing feasibility score is calculated based on the tool specifications and processing complexity required for processing the stress relief groove, and the structural strength score is calculated based on the material removal rate and the stress concentration of the remaining structure. The scores are weighted and summed according to preset weights to obtain the comprehensive score for each parameter combination; The parameter combination with the highest overall score is selected as the target parameter combination.

4. The method according to claim 1, characterized in that, After obtaining the parameter combination that enables the stress relief groove to effectively absorb and release the fixing screw locking deformation and the lateral temperature deformation of the housing, the method further includes: The parameter combination was input into the three-dimensional model for secondary simulation verification, confirming that the stress and deformation of the unloading groove under the scenarios of fixed screw fastening and shell lateral temperature deformation both met the preset threshold requirements. If the secondary simulation verification is successful, the optimized parameters will be determined as the final parameters of the fixed seat unloading groove.

5. The method according to claim 4, characterized in that, The step of inputting the parameter combination into the three-dimensional model for secondary simulation verification confirms that the stress and deformation of the stress relief groove under the scenarios of fixed screw fastening and lateral temperature deformation of the shell meet the preset threshold requirements, including: Input the number of unloading grooves, length, width, depth and vertical spacing of a single unloading groove into the 3D model corresponding to the selected parameter combination to generate a fixed base model containing the optimized unloading groove structure. In the case of fixing screw fastening, a load equivalent to the actual fastening force is applied to the model; in the case of lateral temperature deformation of the shell, a thermal expansion load corresponding to the preset temperature change range is applied to the model. Run finite element simulation calculations to obtain stress distribution cloud maps and deformation data of the unloading groove region; The maximum stress value obtained from the finite element simulation is compared with the preset stress threshold, and the maximum value corresponding to the deformation data is compared with the preset deformation threshold. If neither exceeds the corresponding threshold, the second simulation verification is deemed successful.

6. The method according to claim 1, characterized in that, The optimization objective is to enable the stress-relieving grooves of the microgroove foot to effectively absorb and release the deformation caused by the fixing screws and the deformation of the housing in the lateral direction due to changes in ambient temperature. The direction and range of local extrusion deformation caused by tightening torque during the fastening of the fixing screws were analyzed, as well as the direction and range of lateral deformation of the shell caused by thermal expansion and contraction of the material within the preset temperature change range. It is clear that the deformation absorption capacity required for the stress relief groove should cover the direction and range of the above two types of deformation, and ensure that the stress concentration at the connection interface between the fixed seat and the shell is lower than the critical value that would lead to structural failure.

7. The method according to claim 1, characterized in that, The method is used to optimize a laser support structure based on microgroove feet, including at least one first microgroove foot and at least one second microgroove foot; The first microgroove foot includes a first support block and a first fixing base, and the second microgroove foot includes a second support block and a second fixing base; the first fixing base and the second fixing base are connected to the side wall of the housing, and the first support block and the second support block are installed at the bottom of the housing; wherein, the unloading direction corresponding to the first microgroove foot is a longitudinal direction perpendicular to the light emission direction corresponding to the housing; the unloading direction corresponding to the second microgroove foot is a transverse direction perpendicular to the light emission direction corresponding to the housing; the establishment of a three-dimensional model including the housing, the fixing base and the support block includes: Construct a three-dimensional model of the shell according to its actual dimensions, and reserve mounting interfaces for fixing seats and support blocks on the side wall and bottom mounting surface of the shell, respectively. Construct three-dimensional models of the first fixed seat, the second fixed seat, the first support block, and the second support block. The V-shaped groove structure of the first and second fixed seats, the semi-cylindrical structure of the first and second support blocks, and the slotting direction and distribution of the stress relief groove are all modeled according to the actual design requirements. In the 3D model, the first fixed seat and the second fixed seat are assembled to the housing through the side wall mounting interface, and the first support block and the second support block are assembled to the housing through the bottom mounting interface.

8. The method according to claim 1, characterized in that, The parameter range for setting the stress relief groove includes: The range of the slottable area for the stress relief groove is determined based on the overall dimensions of the fixed base and the position of the V-shaped groove structure. The number of unloading grooves is controlled within a preset integer range. The length of a single unloading groove is set to no more than 80% of the length of the slottable area, the depth is set to no more than 50% of the wall thickness of the fixed seat, and the interval between the upper and lower unloading grooves is set to 1 to 3 times the width of a single unloading groove. The range of values ​​for each parameter is discretized into integers or decimals to form a set of parameter combinations that can be used for simulation calculations.

9. The method according to claim 1, characterized in that, The finite element method is used to perform mechanical analysis on the fixing seat under different parameter combinations, and to obtain the stress distribution and deformation data of the fixing seat under each parameter combination during the fixing screw fastening process and when the shell undergoes lateral deformation due to changes in ambient temperature. Mesh the fixed base model containing different unloading groove parameters, and refine the mesh in the V-groove limiting surface, screw mounting hole area and unloading groove edge. In the simulation of the screw fastening scenario, an axial preload is applied to the countersunk hole of the screw installation to simulate the fastening process of the shoulder screw; in the simulation of the lateral temperature deformation scenario of the housing, a lateral displacement load is applied to the bottom mounting surface of the housing to simulate the deformation of the housing caused by temperature changes. Set the calculation accuracy and convergence conditions of the simulation solver, run the mechanical analysis calculation, and obtain the maximum stress value, stress concentration location, and relative deformation of the interface between the fixed seat and the shell under each parameter combination.

10. The method according to claim 1, characterized in that, The process involves analyzing the simulated stress distribution and deformation data based on preset stress and deformation thresholds to obtain parameter combinations that enable the stress relief groove to effectively absorb and release the deformation of the fixing screws and the lateral temperature deformation of the shell. These parameters include: Establish screening conditions to ensure that the maximum stress in the stress relief groove area does not exceed 70% of the material yield strength under the fixed screw fastening scenario, and the relative deformation between the fixing seat and the shell does not exceed 0.1 mm under the shell lateral temperature deformation scenario; The simulation data for each parameter combination is iterated through, and parameter combinations that simultaneously satisfy the above two conditions are selected as candidate valid parameter combinations.

Images