Device and method for processing a rod body with a composite microstructure imitating leaf veins

Abstract

The present invention discloses a processing device and method for a rod body with a leaf vein-imitation composite microstructure, and relates to the field of underwater drag reduction technology. The processing device includes: a control mechanism, a processing table, a slide rail arranged on the processing table along a preset horizontal direction, a laser processing mechanism installed on the processing table on one side of the slide rail, and a positioning mechanism on the slidingly arranged slide rail; the positioning mechanism includes a first slide and a second slide on the slidingly arranged slide rail, and a first support plate installed on the first slide, a second support plate installed on the second slide, a first three-jaw chuck rotatably installed on the first support plate, a second three-jaw chuck rotatably installed on the second support plate, and a motor connected to the first three-jaw chuck, the first three-jaw chuck and the second three-jaw chuck are arranged face to face and coaxially, and the first slide and the second slide are connected to a driving mechanism. The present invention can process a leaf vein-imitation composite microstructure on the surface of the rod body, thereby ensuring the underwater drag reduction effect of the rod body.

Description

Technical Field

[0001] The invention relates to the technical field of underwater drag reduction, and in particular to a processing device and method for a rod body with a leaf vein-imitation composite microstructure. Background Art

[0002] For objects moving underwater, the frictional resistance caused by the viscosity of the fluid accounts for a high proportion of the total resistance. Therefore, the resistance of its movement in water can be reduced by reducing the viscous frictional resistance of its surface. At present, studies have found that objects with a certain texture structure on the surface have better underwater drag reduction effects. Commonly used methods for making surface drag reduction textures include vapor deposition, electrochemical deposition, template copying, photolithography, laser surface treatment, etc. Among them, laser processing is often used in the processing of drag reduction microgrooves on flat metal surfaces due to its high efficiency, precision, and enhanced corrosion resistance. However, since it is difficult to focus the laser when processing on a curved surface and the focus position is random, laser processing is limited to the processing of drag reduction microstructures on the surface of round rods. Summary of the invention

[0003] In order to solve the technical problems existing in the background technology, the present invention provides a processing device and method for a rod body having a composite microstructure imitating leaf veins.

[0004] In a first aspect, the present invention proposes a processing device for a rod body with a leaf vein-imitation composite microstructure, wherein the rod body with the leaf vein-imitation composite microstructure comprises a leaf vein-imitation composite microstructure, wherein the leaf vein-imitation composite microstructure comprises a plurality of strip grooves arranged on the surface of the rod body at equal intervals in sequence along the circumference of the rod body and a plurality of annular grooves arranged on the surface of the rod body at equal intervals in sequence along the circumference of the rod body, wherein each strip groove is arranged along the axial direction of the rod body; each annular groove comprises a plurality of first groove segments and a plurality of second groove segments arranged alternately in sequence along the circumference of the rod body, wherein each first groove segment is connected to an adjacent upper second groove segment to form a V-shaped groove segment, wherein each first groove segment is connected to an adjacent lower groove segment to form an inverted V-shaped groove segment, wherein a strip groove is correspondingly connected to the V-shaped vertex of each V-shaped groove segment, and a strip groove is correspondingly connected to the V-shaped vertex of each inverted V-shaped groove segment; and the cross-sections of the strip grooves and the annular grooves are both V-shaped;

[0005] The processing device comprises: a processing table, a positioning mechanism, a driving mechanism, a control mechanism and a laser processing mechanism;

[0006] The processing table is provided with a slide rail arranged along a preset horizontal direction; the laser processing mechanism is installed on the processing table on one side of the slide rail;

[0007] The positioning mechanism includes a first slide, a second slide, a first support plate, a second support plate, a first three-jaw chuck, a second three-jaw chuck and a motor; the first slide and the second slide are both connected to the slide rail in a sliding manner along a preset horizontal direction, and the driving mechanism is connected to the first slide and the second slide respectively, and the driving mechanism is used to simultaneously drive the first slide and the second slide to slide back and forth along the preset horizontal direction; the first support plate is installed on the first slide, and the second support plate is installed on the second slide, the first three-jaw chuck is rotatably installed on the first support plate, and the second three-jaw chuck is rotatably installed on the second support plate, and the first three-jaw chuck and the second three-jaw chuck are coaxially arranged face to face, and the first three-jaw chuck and the second three-jaw chuck are used to fix the rod body; the motor is installed on the first support plate and the motor is drivingly connected to the first three-jaw chuck, and the motor is used to drive the first three-jaw chuck to rotate;

[0008] The control mechanism is used to control the coordinated actions of the driving mechanism, the motor and the laser processing mechanism to process the leaf vein imitation composite microstructure on the surface of the rod body fixed by the first three-jaw chuck and the second three-jaw chuck.

[0009] Preferably, the diameter of the rod body is 3 to 30 mm, the distance S between adjacent strip grooves is 0.5 to 21 mm, the groove width D of the strip grooves is 0.1 mm to 0.6 mm, and the groove width ratio λ between the annular grooves and the strip grooves is 0.5 to 1.0; the distance L between adjacent annular grooves is 0.6 mm to 1.8 mm; the V-shaped angles of the strip grooves and the annular grooves are both α, and α is 30° to 90°; the V-shaped angles of the inverted V-shaped groove section and the V-shaped groove section are both β, and β is 60° to 120°.

[0010] Preferably, S is 1 mm, D is 100 μm, λ is 0.5, L=1.0 mm, α is 60°, and β is 80°.

[0011] Preferably, during the coordinated action, the control mechanism controls the driving mechanism, the motor and the laser processing mechanism to cooperate to process a plurality of strip-shaped grooves extending along the axial direction of the rod body and distributed in sequence and at equal intervals along the circumference of the rod body on the surface of the rod body fixed by the first three-jaw chuck and the second three-jaw chuck;

[0012] Next, the control mechanism controls the driving mechanism, the motor and the laser processing mechanism to cooperate to process a plurality of annular grooves arranged along the circumference of the rod body and distributed in sequence and at equal intervals along the axial direction of the rod body on the surface of the rod body fixed by the first three-jaw chuck and the second three-jaw chuck.

[0013] Preferably, during the processing of the strip trough body, the control mechanism determines the laser scanning path and laser processing parameters of the strip trough body according to the leaf vein-imitation composite microstructure; wherein the laser scanning path of the strip trough body includes a plurality of strip scanning path layers arranged sequentially from top to bottom, each strip scanning path layer includes a plurality of parallel strip scanning paths, and the number of strip scanning paths of the plurality of strip scanning path layers decreases sequentially from top to bottom, so that the cross section of the laser scanning path of the strip trough body is arranged in an inverted triangle from top to bottom;

[0014] Next, the control mechanism controls the motor to rotate the rod body so that the position to be processed of the rod body is rotated to just below the laser processing mechanism. The control mechanism controls the laser processing mechanism and the driving mechanism to cooperate to perform laser scanning on the position to be processed of the rod body according to the laser scanning path of the strip trough body, and completes the processing of the first strip scanning path layer of the single strip trough body arranged from top to bottom;

[0015] Next, repeat the above step until the processing of the first strip scanning path layer of all strip slot bodies arranged from top to bottom is completed;

[0016] Then, repeat the above two steps until the processing of the multi-layer strip scanning path layer of all strip grooves arranged from top to bottom is completed, and a plurality of strip grooves extending along the axial direction of the rod body are processed on the surface of the rod body and are arranged in sequence and at equal intervals along the circumference of the rod body.

[0017] Preferably, during the processing of the first layer of strip scanning path layer of a single strip trough body arranged from top to bottom, the control mechanism controls the driving mechanism to drive the positioning mechanism to slide along a preset horizontal direction while controlling the laser processing mechanism to perform laser scanning, thereby completing the laser scanning of the single strip scanning path, and then performs laser scanning one by one to complete the processing of the first layer of strip scanning path layer of a single strip trough body arranged from top to bottom.

[0018] Preferably, the number of strip scanning path layers is 5, and the number of strip scanning paths in the 5 strip scanning path layers is 20, 15, 9, 3 and 1 from top to bottom; laser processing parameters: laser power is selected as 20W, focal length is 370mm, spot diameter is 30μm, laser pulse frequency is 20kHz, pulse time is 1μs, and scanning speed is 200m / s.

[0019] Preferably, during the processing of the annular trough body, the control mechanism determines the laser scanning path and laser processing parameters of the annular trough body according to the leaf vein-mimicking composite microstructure; wherein the laser scanning path of the annular trough body comprises a plurality of annular scanning path layers arranged in sequence from the outside to the inside in the radial direction, each annular scanning path layer comprises a plurality of parallel annular scanning paths, and the number of annular scanning paths of the plurality of annular scanning path layers decreases in sequence from the outside to the inside in the radial direction, so that the cross section of the laser scanning path of the annular trough body is arranged in an inverted triangle from the outside to the inside in the radial direction;

[0020] Next, the control mechanism controls the driving mechanism to move the rod body in a preset horizontal direction, so that the position to be processed of the rod body is moved to just below the laser processing mechanism. The control mechanism controls the laser processing mechanism, the motor and the driving mechanism to cooperate to perform laser scanning on the position to be processed of the rod body according to the laser scanning path of the strip trough body and the laser processing parameters, and completes the processing of the first layer of the annular scanning path layer from the outside to the inside along the radial direction of the single annular trough body;

[0021] Next, repeat the above step until the processing of the first layer of the annular scanning path layer of all the annular slots arranged from top to bottom is completed;

[0022] Then, repeat the above two steps until all the annular grooves are processed in order from top to bottom, and a plurality of annular grooves arranged along the circumference of the rod body are obtained.

[0023] Preferably, during the processing of the first layer of annular scanning path layer radially from the outside to the inside of a single annular groove body, the control mechanism controls the motor to rotate while controlling the laser processing mechanism to perform laser scanning, and at the same time controls the drive mechanism to move so that the rod body reciprocates along a preset horizontal direction while rotating, thereby completing the processing of a single annular scanning path, and then laser scanning is performed one by one to complete the processing of the first layer of annular scanning path layer radially from the outside to the inside of the single annular groove body.

[0024] Preferably, during the machining of the single annular scanning path, the single annular scanning path includes a first annular path segment corresponding to the first slot body segment and a second annular path segment corresponding to the second slot body segment;

[0025] The control mechanism first drives the mechanism to move the rod body along a preset horizontal direction so that the position to be processed on the rod body is located directly below the laser processing mechanism;

[0026] Then, the motor is controlled to drive the rod body to rotate so that the middle part between any two adjacent strip-shaped groove bodies in the position to be processed on the rod body is located directly below the laser processing mechanism, and then the control mechanism controls the laser processing mechanism, the motor and the driving mechanism to cooperate to perform laser scanning from the middle to both sides according to the laser scanning path of the strip-shaped groove body and the laser processing parameters, until the first annular path segment or the second annular path segment is connected with the strip-shaped groove body, and the processing of the first annular path segment or the second annular path segment is completed;

[0027] Then repeat the previous step until the processing of a single annular scanning path of a single annular groove body is completed.

[0028] Preferably, the number of annular scanning path layers is 6, and the number of annular scanning paths of the annular scanning path layer is 21, 17, 13, 9, 5 and 1 from the outside to the inside in the radial direction; laser processing parameters: laser power is selected as 20W, focal length is 370mm, spot diameter is 30μm, laser pulse frequency is 20kHz, pulse time is 1μs, and scanning speed is 200m / s.

[0029] In a second aspect, the present invention further provides a method for processing a rod body having a leaf vein-imitation composite microstructure, using the processing device for a rod body having a leaf vein-imitation composite microstructure as described in any one of the first aspects, comprising:

[0030] S1: pre-processing the rod body;

[0031] S2: installing the pretreated rod body on a processing device for a rod body having a composite microstructure imitating leaf veins;

[0032] S3: using a processing device to etch a plurality of strip-shaped grooves extending along the axial direction of the rod body on the surface of the rod body, which are distributed in sequence and at equal intervals along the circumference of the rod body;

[0033] S4: using a processing device to etch a plurality of annular grooves on the surface of the rod body, which are distributed in sequence and at equal intervals along the axial direction of the rod body and are arranged along the circumference of the rod body;

[0034] S5: Cleaning the processed rod body to obtain a rod body with a leaf vein-mimicking composite microstructure.

[0035] In the present invention, the processing device and processing method of the rod body with the leaf vein imitation composite microstructure are proposed, and the leaf vein imitation composite microstructure is formed by combining a plurality of strip grooves and a plurality of annular grooves. Through experiments, it can be found that the laminar bottom layer stability of the rod body with the annular groove body is better, and the arrangement of the strip groove body causes a high flow velocity area to appear near the wall surface of the rod body, thereby achieving the drag reduction function. The processing device and method in the present invention can process the leaf vein imitation composite microstructure on the surface of the rod body, effectively ensuring the processing accuracy of the leaf vein imitation composite microstructure, thereby ensuring the underwater drag reduction effect of the rod body. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic structural diagram of a device for processing a rod body having a composite microstructure imitating leaf veins in one embodiment of the present invention.

[0037] Figure 2 The diagram is a schematic diagram of the structure of the leaf vein imitation composite microstructure in one embodiment of the present invention; wherein, (a) is a schematic diagram of the structure of the leaf vein imitation composite microstructure when D = 0.1 mm, (b) is a schematic diagram of the structure of the leaf vein imitation composite microstructure when D = 0.2 mm, (c) is a schematic diagram of the structure of the leaf vein imitation composite microstructure when D = 0.3 mm, and (d) is a schematic diagram of the structure of the leaf vein imitation composite microstructure when D = 0.4 mm.

[0038] Figure 3 The present invention provides an overall surface morphology of the leaf vein imitating composite microstructure under a scanning electron microscope at different magnifications; wherein, (a1), (b1), (c1) and (d1) are the overall surface morphologies of the leaf vein imitating composite microstructure under a scanning electron microscope at different magnifications when D = 0.1 mm, 0.2 mm, 0.3 mm and 0.4 mm, respectively; (a2), (b2), (c2) and (d2) are the overall surface morphologies of the strip groove body of the leaf vein imitating composite microstructure under a scanning electron microscope when D = 0.1 mm, 0.2 mm, 0.3 mm and 0.4 mm, respectively; (a3), (b3), (c3) and (d3) are the surface morphologies of the inclined surface areas of the strip groove body of the leaf vein imitating composite microstructure under a scanning electron microscope when D = 0.1 mm, 0.2 mm, 0.3 mm and 0.4 mm, respectively; (a4), (b4), (c4) and (d4) are the surface morphologies of the inclined surface areas of the strip groove body of the leaf vein imitating composite microstructure under a scanning electron microscope when D = 0.1 mm, 0.2 mm, 0.3 mm and 0.4 mm, respectively. The surface morphologies of the edge melt area of ​​the strip groove body of the leaf vein imitating composite microstructure when D = 0.1mm, 0.2mm, 0.3mm and 0.4mm under a scanning electron microscope, (a5), (b5), (c5) and (d5) are the surface morphologies of the unstructured area next to the strip groove body of the leaf vein imitating composite microstructure when D = 0.1mm, 0.2mm, 0.3mm and 0.4mm under a scanning electron microscope, respectively.

[0039] Figure 4 The surface velocity vector distribution diagrams of a smooth rod and a rod with a composite microstructure imitating leaf veins proposed in the present invention; wherein, (a) is the surface velocity vector distribution diagram of a smooth rod, and (b) is the surface velocity vector distribution diagram of a rod with a composite microstructure imitating leaf veins proposed in the present invention.

[0040] Explanation of the accompanying drawings: processing table 1, slide rail 2, first slide 3, second slide 4, first support plate 5, first three-jaw chuck 6, motor 7, laser processing mechanism 8. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. Example 1

[0042] like Figure 1 As shown, this embodiment proposes a processing device for a rod body with a leaf vein imitation composite microstructure, the rod body with the leaf vein imitation composite microstructure includes the leaf vein imitation composite microstructure, the leaf vein imitation composite microstructure includes a plurality of strip grooves arranged on the surface of the rod body at equal intervals in sequence along the circumference of the rod body and a plurality of annular grooves arranged on the surface of the rod body at equal intervals in sequence along the circumference of the rod body, each strip groove is arranged along the axial direction of the rod body; each annular groove includes a plurality of first groove segments and a plurality of second groove segments arranged alternately in sequence along the circumference of the rod body, each first groove segment is connected to the adjacent upper second groove segment to form a V-shaped groove segment, each first groove segment is connected to the adjacent next groove segment to form an inverted V-shaped groove segment, a strip groove is correspondingly connected to the V-shaped vertex of each V-shaped groove segment, and a strip groove is correspondingly connected to the V-shaped vertex of each inverted V-shaped groove segment; the cross-sections of the strip grooves and the annular grooves are both V-shaped;

[0043] The processing device comprises: a processing table 1, a positioning mechanism, a driving mechanism, a control mechanism and a laser processing mechanism 8;

[0044] A slide rail 2 is provided on the processing table 1 along a preset horizontal direction; a laser processing mechanism 8 is installed on the processing table 1 on one side of the slide rail 2;

[0045] The positioning mechanism includes a first slide 3, a second slide 4, a first support plate 5, a second support plate, a first three-jaw chuck 6, a second three-jaw chuck and a motor 7; the first slide 3 and the second slide 4 are both slidably connected to the slide rail 2 along a preset horizontal direction, and the driving mechanism is connected to the first slide 3 and the second slide 4 respectively, and the driving mechanism is used to simultaneously drive the first slide 3 and the second slide 4 to slide back and forth along the preset horizontal direction; the first support plate 5 is installed on the first slide 3, and the second support plate is installed on the second slide 4, the first three-jaw chuck 6 is rotatably installed on the side of the first support plate 5 facing the first support plate 5, and the second three-jaw chuck is rotatably installed on the side of the second support plate facing the first support plate 5, and the first three-jaw chuck 6 and the second three-jaw chuck are coaxially arranged, and the first three-jaw chuck 6 and the second three-jaw chuck cooperate to fix the rod body; the motor 7 is installed on the first support plate 5 and the motor 7 is drivingly connected to the first three-jaw chuck 6, and the motor 7 is used to drive the first three-jaw chuck 6 to rotate;

[0046] The control mechanism is used to control the coordinated actions of the driving mechanism, the motor 7 and the laser processing mechanism 8 to process the leaf vein-simulating composite microstructure on the surface of the rod body fixed by the first three-jaw chuck 6 and the second three-jaw chuck.

[0047] The processing device of the present invention can process the leaf vein imitation composite microstructure on the surface of the rod body, effectively ensuring the processing accuracy of the leaf vein imitation composite microstructure, thereby ensuring the underwater drag reduction effect of the rod body.

[0048] In this embodiment, during the coordinated action, the control mechanism controls the driving mechanism, the motor 7 and the laser processing mechanism 8 to cooperate to process a plurality of strip-shaped grooves extending along the axial direction of the rod body and distributed in sequence and at equal intervals along the circumference of the rod body on the surface of the rod body fixed by the first three-jaw chuck 6 and the second three-jaw chuck;

[0049] Next, the control mechanism controls the driving mechanism, the motor 7 and the laser processing mechanism 8 to cooperate to process a plurality of annular grooves arranged along the circumference of the rod body and distributed in sequence and at equal intervals along the axial direction of the rod body on the surface of the rod body fixed by the first three-jaw chuck 6 and the second three-jaw chuck.

[0050] The present invention realizes the processing of the drag-reducing microstructure on the curved surface of the rod body by decomposing the leaf vein-imitation composite microstructure and processing the strip-shaped groove body and the ring-shaped groove body respectively.

[0051] It should be noted that the driving mechanism, control mechanism and laser processing mechanism 8 in this embodiment are all existing technologies.

[0052] During the processing of the strip trough body, the control mechanism determines the laser scanning path and laser processing parameters of the strip trough body according to the leaf vein-imitation composite microstructure; wherein the laser scanning path of the strip trough body includes a plurality of strip scanning path layers arranged sequentially from top to bottom, each strip scanning path layer includes a plurality of parallel strip scanning paths, and the number of the strip scanning paths of the plurality of strip scanning path layers decreases sequentially from top to bottom, so that the cross section of the laser scanning path of the strip trough body is arranged in an inverted triangle from top to bottom;

[0053] Next, the control mechanism controls the motor 7 to rotate the rod body so that the position to be processed of the rod body is rotated to just below the laser processing mechanism 8. The control mechanism controls the laser processing mechanism 8 and the driving mechanism to cooperate to perform laser scanning on the position to be processed of the rod body according to the laser scanning path of the strip trough body, and completes the processing of the first strip scanning path layer of the single strip trough body arranged from top to bottom;

[0054] Next, repeat the above step until the processing of the first strip scanning path layer of all strip slot bodies arranged from top to bottom is completed;

[0055] Then, repeat the above two steps until the processing of the multi-layer strip scanning path layer of all strip grooves arranged from top to bottom is completed, and a plurality of strip grooves extending along the axial direction of the rod body are processed on the surface of the rod body and are arranged in sequence and at equal intervals along the circumference of the rod body.

[0056] When processing the strip groove body, this embodiment adopts the method of processing the next single layer after processing all the same layers of the strip groove body, so as to reduce the influence of high heat generated by energy concentration during laser processing on the V-groove etching quality and reduce the accumulation of spatter.

[0057] Among them, during the processing of the first layer of strip scanning path layer of a single strip trough body arranged from top to bottom, the control mechanism controls the laser processing mechanism 8 to perform laser scanning while controlling the driving mechanism to drive the positioning mechanism to slide along a preset horizontal direction to complete the laser scanning of the single strip scanning path, and then performs laser scanning one by one to complete the processing of the first layer of strip scanning path layer of a single strip trough body arranged from top to bottom.

[0058] Of course, the control mechanism determines in advance the moving direction, moving speed and moving distance of the rod body in the preset horizontal direction when scanning according to each strip scanning path based on the laser scanning path and laser processing parameters of the leaf vein-imitation composite microstructure and the strip groove body.

[0059] Among them, the number of strip scanning path layers is 5, and the number of strip scanning paths in the 5 strip scanning path layers is 20, 15, 9, 3 and 1 from top to bottom. Laser processing parameters: laser power is selected as 20W, focal length is 370mm, spot diameter is 30μm, laser pulse frequency is 20kHz, pulse time is 1μs, and scanning speed is 200m / s.

[0060] During the processing of the annular trough body, the control mechanism determines the laser scanning path and laser processing parameters of the annular trough body according to the leaf vein-simulating composite microstructure; wherein the laser scanning path of the annular trough body includes a plurality of annular scanning path layers arranged in sequence from the outside to the inside in the radial direction, each annular scanning path layer includes a plurality of parallel annular scanning paths, and the number of annular scanning paths of the plurality of annular scanning path layers decreases in sequence from the outside to the inside in the radial direction, so that the cross section of the laser scanning path of the annular trough body is arranged in an inverted triangle from the outside to the inside in the radial direction;

[0061] Next, the control mechanism controls the driving mechanism to move the rod body in a preset horizontal direction, so that the position to be processed of the rod body is moved to just below the laser processing mechanism 8. The control mechanism controls the laser processing mechanism 8, the motor 7 and the driving mechanism to cooperate to perform laser scanning on the position to be processed of the rod body according to the laser scanning path of the strip trough body and the laser processing parameters, and completes the processing of the first layer of the annular scanning path layer from the outside to the inside along the radial direction of the single annular trough body;

[0062] Next, repeat the above step until the processing of the first layer of the annular scanning path layer of all the annular slots arranged from top to bottom is completed;

[0063] Then, repeat the above two steps until all the annular grooves are processed in order from top to bottom, and a plurality of annular grooves arranged along the circumference of the rod body are obtained.

[0064] When processing the annular groove body, this embodiment adopts the method of processing the same annular scanning path layer of all the annular groove bodies first and then processing the next annular scanning path layer, so as to reduce the influence of high heat generated by energy concentration during laser processing on the V-groove etching quality and reduce spatter accumulation.

[0065] During the processing of the first layer of annular scanning path layer radially from the outside to the inside of a single annular groove body, the control mechanism controls the motor 7 to rotate while controlling the laser processing mechanism 8 to perform laser scanning, and at the same time controls the drive mechanism to move so that the rod body reciprocates along the preset horizontal direction while rotating, thereby completing the processing of a single annular scanning path, and then laser scanning is performed one by one to complete the processing of the first layer of annular scanning path layer radially from the outside to the inside of the single annular groove body.

[0066] Of course, the control mechanism determines in advance the rotation direction, rotation speed of the rod body and the movement direction, movement speed and movement distance of the rod body in the preset horizontal direction when scanning according to each annular scanning path based on the simulated leaf vein composite microstructure, the laser scanning path of the annular groove and the laser processing parameters.

[0067] Specifically, during the processing of a single annular scanning path, the single annular scanning path includes a first annular path segment corresponding to the first slot body segment and a second annular path segment corresponding to the second slot body segment;

[0068] The control mechanism first drives the mechanism to move the rod body in a preset horizontal direction so that the position to be processed on the rod body is located directly below the laser processing mechanism 8;

[0069] Then, the motor 7 is controlled to drive the rod body to rotate so that the middle part between any two adjacent strip grooves in the position to be processed on the rod body is located directly below the laser processing mechanism 8, and then the control mechanism controls the laser processing mechanism 8, the motor 7 and the driving mechanism to cooperate to perform laser scanning from the middle to both sides according to the laser scanning path of the strip groove body and the laser processing parameters, until the first annular path segment or the second annular path segment is connected with the strip groove body, and the processing of the first annular path segment or the second annular path segment is completed;

[0070] Then repeat the previous step until the processing of a single annular scanning path of a single annular groove body is completed.

[0071] When processing the first annular path segment or the second annular path segment, this embodiment processes from the middle of two adjacent strip-shaped grooves, i.e., the cut surface, to both sides respectively, which can effectively reduce the influence of non-planar surfaces on the groove depth when processing oblique grooves on curved surfaces.

[0072] Among them, the number of annular scanning path layers is 6, and the number of annular scanning paths of the annular scanning path layer is 21, 17, 13, 9, 5 and 1 from the outside to the inside in the radial direction; laser processing parameters: laser power is selected as 20W, focal length is 370mm, spot diameter is 30μm, laser pulse frequency is 20kHz, pulse time is 1μs, and scanning speed is 200m / s. Example 2

[0073] The rod body with the leaf vein imitating composite microstructure is processed by the processing device for the rod body with the leaf vein imitating composite microstructure proposed in Example 1.

[0074] The rod body with the leaf vein imitation composite microstructure in the present embodiment includes the leaf vein imitation composite microstructure, which includes a plurality of strip grooves arranged on the surface of the rod body at equal intervals in sequence along the circumference of the rod body and a plurality of annular grooves arranged on the surface of the rod body at equal intervals in sequence along the circumference of the rod body, each strip groove is arranged along the axial direction of the rod body; each annular groove includes a plurality of first groove segments and a plurality of second groove segments arranged alternately in sequence along the circumference of the rod body, each first groove segment is connected to the adjacent upper second groove segment to form a V-shaped groove segment, each first groove segment is connected to the adjacent next groove segment to form an inverted V-shaped groove segment, a strip groove is correspondingly connected to the V-shaped vertex of each V-shaped groove segment, and a strip groove is correspondingly connected to the V-shaped vertex of each inverted V-shaped groove segment; the cross-sections of the strip grooves and the annular grooves are both V-shaped;

[0075] Among them, the diameter of the rod body is 5 mm, the spacing S between adjacent strip grooves is 1 mm, the groove width D of the strip grooves is 0.1 mm, the groove width ratio λ of the annular groove body to the strip groove body is 0.5; the distance L between adjacent annular grooves is 1.0 mm; the V-shaped angles of the strip groove body and the annular groove body are both α, α is 60°; the V-shaped angles of the inverted V-shaped groove body section and the V-shaped groove body section are both β, β is 80°.

[0076] The structure of the leaf vein-mimicking composite microstructure of this embodiment is as follows Figure 2 The schematic diagram of the surface morphology of the leaf vein-mimicking composite microstructure in this embodiment under a scanning electron microscope is shown in FIG. Figure 3As shown in (a1), (a2), (a3), (a4) and (a5); wherein, (a1) is the overall surface morphology of the leaf vein-imitation composite microstructure, (a2) is the overall surface morphology of the strip groove body under a scanning electron microscope, (a3) ​​is the surface morphology of the inclined area of ​​the strip groove body under a scanning electron microscope, (a4) is the surface morphology of the edge melt area of ​​the strip groove body under a scanning electron microscope, and (a5) is the surface morphology of the unstructured area next to the strip groove body under a scanning electron microscope. Example 3

[0077] The rod body with a composite microstructure imitating leaf veins is obtained by processing the rod body processing device with a composite microstructure imitating leaf veins proposed in Example 1. The structure of the rod body with a composite microstructure imitating leaf veins in this embodiment is the same as that described in Example 2. Among them, the diameter of the rod body is 5 mm, the spacing S between adjacent strip grooves is 1 mm, the groove width D of the strip grooves is 0.2 mm, and the groove width ratio λ between the annular grooves and the strip grooves is 0.5; the distance L between adjacent annular grooves is 1.0 mm; the V-shaped angles of the strip grooves and the annular grooves are both α, and α is 60°; the V-shaped angles of the inverted V-shaped groove body section and the V-shaped groove body section are both β, and β is 80°.

[0078] The structure of the leaf vein-mimicking composite microstructure of this embodiment is as follows Figure 2 The schematic diagram of the surface morphology of the leaf vein-mimicking composite microstructure in this embodiment under a scanning electron microscope is shown in FIG. Figure 3 As shown in (b1), (b2), (b3), (b4) and (b5); wherein, (b1) is the overall surface morphology of the leaf vein imitation composite microstructure at different magnifications under a scanning electron microscope, (b2) is the overall surface morphology of the strip groove body under a scanning electron microscope, (b3) is the surface morphology of the inclined area of ​​the strip groove body under a scanning electron microscope, (b4) is the surface morphology of the edge melt area of ​​the strip groove body under a scanning electron microscope, and (b5) is the surface morphology of the unstructured area next to the strip groove body under a scanning electron microscope. Example 4

[0079] The rod body with a composite microstructure imitating leaf veins is obtained by processing the rod body processing device with a composite microstructure imitating leaf veins proposed in Example 1. The structure of the rod body with a composite microstructure imitating leaf veins in this embodiment is the same as that described in Example 2. Among them, the diameter of the rod body is 5 mm, the spacing S between adjacent strip grooves is 1 mm, the groove width D of the strip grooves is 0.3 mm, and the groove width ratio λ between the annular groove body and the strip groove body is 0.5; the distance L between adjacent annular grooves is 1.0 mm; the V-shaped angles of the strip groove body and the annular groove body are both α, and α is 60°; the V-shaped angles of the inverted V-shaped groove body section and the V-shaped groove body section are both β, and β is 80°.

[0080] The structure of the leaf vein-mimicking composite microstructure of this embodiment is as follows Figure 2 The schematic diagram of the surface morphology of the leaf vein-mimicking composite microstructure in this embodiment under a scanning electron microscope is shown in FIG. Figure 3 As shown in (c1), (c2), (c3), (c4) and (c5); wherein, (c1) is the overall surface morphology of the leaf vein-imitation composite microstructure at different magnifications under a scanning electron microscope, (c2) is the overall surface morphology of the strip groove body under a scanning electron microscope, (c3) is the surface morphology of the inclined area of ​​the strip groove body under a scanning electron microscope, (c4) is the surface morphology of the edge melt area of ​​the strip groove body under a scanning electron microscope, and (c5) is the surface morphology of the unstructured area next to the strip groove body under a scanning electron microscope. Example 5

[0081] The rod body with a composite microstructure imitating leaf veins is obtained by processing the rod body processing device with a composite microstructure imitating leaf veins proposed in Example 1. The structure of the rod body with a composite microstructure imitating leaf veins in this embodiment is the same as that described in Example 2. Among them, the diameter of the rod body is 5 mm, the spacing S between adjacent strip grooves is 1 mm, the groove width D of the strip grooves is 0.4 mm, and the groove width ratio λ between the annular grooves and the strip grooves is 0.5; the distance L between adjacent annular grooves is 1.0 mm; the V-shaped angles of the strip grooves and the annular grooves are both α, and α is 60°; the V-shaped angles of the inverted V-shaped groove body section and the V-shaped groove body section are both β, and β is 80°.

[0082] The structure of the leaf vein-mimicking composite microstructure of this embodiment is as follows Figure 2 The schematic diagram of the surface morphology of the leaf vein-mimicking composite microstructure in this embodiment under a scanning electron microscope is shown in FIG. Figure 3 As shown in (d1), (d2), (d3), (d4) and (d5); wherein, (d1) is the overall surface morphology of the leaf vein imitation composite microstructure at different magnifications under a scanning electron microscope, (d2) is the overall surface morphology of the strip groove body under a scanning electron microscope, (d3) is the surface morphology of the inclined area of ​​the strip groove body under a scanning electron microscope, (d4) is the surface morphology of the edge melt area of ​​the strip groove body under a scanning electron microscope, and (d5) is the surface morphology of the unstructured area next to the strip groove body under a scanning electron microscope. Example 6

[0083] The drag reduction performance of the smooth rod body and the rod body with the composite microstructure of imitating leaf veins obtained in Example 2 were tested respectively. The test results are as follows: Figure 4As shown in (a) and (b); wherein, (a) is the surface velocity vector distribution diagram of a smooth rod, and (b) is the surface velocity vector distribution diagram of a rod with a composite microstructure imitating leaf veins proposed by the present invention. Example 7

[0084] This embodiment provides a method for processing a rod body having a leaf vein-imitation composite microstructure, using the processing device for a rod body having a leaf vein-imitation composite microstructure described in Embodiment 1, comprising:

[0085] S1: pre-processing the rod body;

[0086] S2: installing the pretreated rod body on a processing device for a rod body having a composite microstructure imitating leaf veins;

[0087] S3: using a processing device to etch a plurality of strip-shaped grooves extending along the axial direction of the rod body on the surface of the rod body, which are distributed in sequence and at equal intervals along the circumference of the rod body;

[0088] S4: using a processing device to etch a plurality of annular grooves on the surface of the rod body, which are distributed in sequence and at equal intervals along the axial direction of the rod body and are arranged along the circumference of the rod body;

[0089] S5: Cleaning the processed rod body to obtain a rod body with a leaf vein-mimicking composite microstructure.

[0090] In this embodiment, in S3, a plurality of strip-shaped grooves extending along the axial direction of the rod body and distributed in sequence and at equal intervals along the circumference of the rod body are etched on the surface of the rod body by a processing device, specifically including:

[0091] S31: The control mechanism determines the laser scanning path and laser processing parameters of the strip trough body according to the leaf vein-mimicking composite microstructure; wherein the laser scanning path of the strip trough body includes a plurality of strip scanning path layers arranged sequentially from top to bottom, each strip scanning path layer includes a plurality of parallel strip scanning paths, and the number of the strip scanning paths of the plurality of strip scanning path layers decreases sequentially from top to bottom, so that the cross section of the laser scanning path of the strip trough body is arranged in an inverted triangle from top to bottom;

[0092] S32: The control mechanism controls the motor 7 to rotate the rod body so that the position to be processed of the rod body rotates to the bottom of the laser processing mechanism 8. The control mechanism controls the laser processing mechanism 8 and the driving mechanism to cooperate to perform laser scanning on the position to be processed of the rod body according to the laser scanning path of the strip trough body, and completes the processing of the first strip scanning path layer of the single strip trough body arranged from top to bottom;

[0093] S33: repeat S32 until the processing of the first strip scanning path layer of all strip slots arranged from top to bottom is completed;

[0094] S34: S32-S33 are repeated cyclically until the processing of the multi-layer strip scanning path layers of all the strip grooves arranged from top to bottom is completed, so that a plurality of strip grooves extending along the axial direction of the rod body are processed on the surface of the rod body and are arranged in sequence and at equal intervals along the circumference of the rod body.

[0095] This embodiment sets different strip scanning path layers at different depths and sets strip scanning paths of different numbers and positions in different strip scanning path layers, thereby being able to control the groove width, groove depth and V-shaped angle of the strip groove body to ensure the accuracy of the processed strip groove body.

[0096] Among them, the number of strip scanning path layers in S31 is 5, and the number of strip scanning paths in the 5-layer strip scanning path layer is 20, 15, 9, 3 and 1 from top to bottom; the laser processing parameters include laser power selection of 20W, focal length of 370mm, spot diameter of 30μm, laser pulse frequency of 20kHz, pulse time of 1μs, and scanning speed of 200m / s.

[0097] In S33, the control mechanism controls the laser processing mechanism 8 to perform laser scanning while controlling the driving mechanism to drive the positioning mechanism to slide along a preset horizontal direction to complete the laser scanning of a single strip scanning path, and then performs laser scanning one by one to complete the processing of the first layer of strip scanning path layer of a single strip groove body arranged from top to bottom.

[0098] Of course, the control mechanism determines in advance the moving direction, moving speed and moving distance of the rod in the preset horizontal direction when scanning according to each strip scanning path based on the laser scanning path and laser processing parameters of the leaf vein-imitation composite microstructure and the strip groove body.

[0099] In this embodiment, in S4, a plurality of annular grooves arranged along the circumference of the rod body and distributed in sequence and at equal intervals along the axial direction of the rod body are etched on the surface of the rod body by a processing device, specifically including:

[0100] S41: The control mechanism determines the laser scanning path and laser processing parameters of the annular groove body according to the leaf vein-mimicking composite microstructure; wherein the laser scanning path of the annular groove body includes multiple layers of annular scanning path layers sequentially arranged from the outside to the inside along the radial direction, each layer of the annular scanning path layer includes multiple parallel annular scanning paths, and the number of annular scanning paths of the multiple layers of the annular scanning path layers decreases sequentially from the outside to the inside along the radial direction, so that the cross section of the laser scanning path of the annular groove body is arranged in an inverted triangle from the outside to the inside along the radial direction;

[0101] S42: The control mechanism controls the driving mechanism to move the rod body in a preset horizontal direction, so that the position to be processed of the rod body is moved to just below the laser processing mechanism 8. The control mechanism controls the laser processing mechanism 8, the motor 7 and the driving mechanism to cooperate to perform laser scanning on the position to be processed of the rod body according to the laser scanning path of the strip trough body and the laser processing parameters, and completes the processing of the first layer of the annular scanning path layer of the single annular trough body from the outside to the inside in the radial direction;

[0102] S43: repeat S42 until the processing of the first layer of the annular scanning path layer of all the annular slots arranged from top to bottom is completed;

[0103] S44: S42-S43 are repeated cyclically until the processing of the multi-layer annular scanning path layers of all annular grooves arranged from top to bottom is completed, so that a plurality of annular grooves arranged along the circumference of the rod body and distributed in sequence and at equal intervals along the axial direction of the rod body are processed on the surface of the rod body.

[0104] This embodiment sets different annular scanning path layers at different depths and sets different numbers and positions of annular scanning paths in different annular scanning path layers, so as to adjust the groove width, groove depth and V-shaped angle of the annular groove body, and then performs laser scanning on the to-be-processed position of the annular groove body of the rod body according to the laser scanning path of the annular groove body, the rotation direction and rotation speed of the rod body when scanning according to each annular scanning path, the movement direction, movement speed and movement distance of the rod body in a preset horizontal direction, so as to further ensure the accuracy of the processed annular groove body.

[0105] The number of the annular scanning path layers in S41 is 6, and the number of the annular scanning paths in the annular scanning path layers is 21, 17, 13, 9, 5 and 1 from the outside to the inside in the radial direction;

[0106] The laser processing parameters include laser power selection of 20 W, focal length of 370 mm, spot diameter of 30 μm, laser pulse frequency of 20 kHz, pulse time of 1 μs, and scanning speed of 200 m / s.

[0107] In S43, the control mechanism controls the motor 7 to rotate while controlling the laser processing mechanism 8 to perform laser scanning, and at the same time controls the drive mechanism to move so that the rod body moves back and forth in a preset horizontal direction while rotating, thereby completing the processing of a single annular scanning path, and then performs laser scanning one by one to complete the processing of the first layer of annular scanning path layer of a single annular groove body along the radial direction from the outside to the inside.

[0108] Specifically, during the processing of a single annular scanning path, the single annular scanning path includes a first annular path segment corresponding to the first slot body segment and a second annular path segment corresponding to the second slot body segment;

[0109] The control mechanism first drives the mechanism to move the rod body in a preset horizontal direction so that the position to be processed on the rod body is located directly below the laser processing mechanism 8;

[0110] Then, the motor 7 is controlled to drive the rod body to rotate so that the middle part between any two adjacent strip grooves in the position to be processed on the rod body is located directly below the laser processing mechanism 8, and then the control mechanism controls the laser processing mechanism 8, the motor 7 and the driving mechanism to cooperate to perform laser scanning from the middle to both sides according to the laser scanning path of the strip groove body and the laser processing parameters, until the first annular path segment or the second annular path segment is connected with the strip groove body, and the processing of the first annular path segment or the second annular path segment is completed;

[0111] Then repeat the previous step until the processing of a single annular scanning path of a single annular groove body is completed.

[0112] When processing the first annular path segment or the second annular path segment, this embodiment processes from the middle of two adjacent strip-shaped grooves, i.e., the cut surface, to both sides respectively, which can effectively reduce the influence of non-planar surfaces on the groove depth when processing oblique grooves on curved surfaces.

[0113] Of course, the control mechanism determines in advance the rotation direction, rotation speed of the rod body and the movement direction, movement speed and movement distance of the rod body in the preset horizontal direction when scanning according to each annular scanning path based on the simulated leaf vein composite microstructure, the laser scanning path of the annular groove and the laser processing parameters.

[0114] In this embodiment, the rod body is made of stainless steel, aluminum alloy, red copper, copper or titanium.

[0115] In this embodiment, the pretreatment includes: ultrasonic cleaning and drying.

[0116] Specifically, the ultrasonic cleaning is to use acetone solution, anhydrous ethanol solution and deionized water to ultrasonically clean the rod body in sequence.

[0117] from Figure 4It can be seen that the present invention forms a leaf vein-like composite microstructure by combining a plurality of strip-shaped grooves and a plurality of annular grooves. Through experiments, it can be found that the laminar bottom layer of the rod body with an annular groove structure has better stability, and the arrangement of the strip-shaped groove body causes a high velocity area to appear near the wall of the rod body, thereby realizing the drag reduction function. Compared with the outer surface of the smooth rod body, the water flow flowing through the surface of the rod body in the present invention will appear obvious high-speed strips on the surface of the leaf vein-like composite microstructure, which makes the near-wall velocity of the surface of the leaf vein-like composite microstructure slightly higher than the near-wall velocity of the surface of the smooth rod body, and the liquid flow velocity of the surface of the rod body with the leaf vein-like composite microstructure is higher than the liquid flow velocity of the surface of the smooth rod body. Moreover, the speed of the low-speed flow area of ​​the annular groove body is close to 0, and the low-speed flow area of ​​the rod body in the V-shaped groove body of a specific size is just filled with liquid, which can be regarded as a viscous surface layer during flow, which changes the contact form between the surface of the rod body and the liquid from solid-liquid contact to liquid-liquid contact, thereby reducing the friction resistance between the surface and the liquid, and achieving the effect of drag reduction.

[0118] from Figure 2 It can be seen that when D=0.1 mm, the size of the imitation leaf vein V-shaped groove on the rod surface is small, and the number of laser marking times is relatively small, so the surface metallic luster is better; the rod surface with D=0.2 mm also has relatively good metallic luster, but as the size of the V-shaped groove increases, the metallic luster on the rod surface becomes weaker and weaker, and the amount of melt produced by the surface laser processing also increases, and the surface is dark gray.

[0119] from Figure 3 It can be seen that under the same marking times, the surface melt of D=0.1 mm, D=0.2 mm, D=0.3 mm, and D=0.4 mm increases with the increase of the size of the V-shaped groove (the larger the size, the more times the scanning path is repeated), and the number and size of the melt spatter on the unstructured surface on both sides also increase with the increase of the size of the V-shaped groove, but the overall difference is not very large. The internal slope morphology of the V-shaped groove is continuous, and there is no fault phenomenon.

[0120] In general, the rod body with a leaf vein imitating composite microstructure processed by the processing device for a rod body with a leaf vein imitating composite microstructure proposed in Example 1 has good underwater drag reduction performance.

[0121] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A processing device for a rod body having a composite microstructure imitating leaf veins, characterized in that: The rod body with the leaf vein imitation composite microstructure comprises the leaf vein imitation composite microstructure, which comprises a plurality of strip grooves arranged at equal intervals on the surface of the rod body in sequence along the circumference of the rod body and a plurality of annular grooves arranged at equal intervals on the surface of the rod body in sequence along the circumference of the rod body, each strip groove is arranged along the axial direction of the rod body; each annular groove comprises a plurality of first groove sections and a plurality of second groove sections arranged alternately in sequence along the circumference of the rod body, each first groove section is connected with the adjacent upper second groove section to form a V-shaped groove section, each first groove section is connected with the adjacent lower groove section to form an inverted V-shaped groove section, a strip groove is correspondingly connected to the V-shaped vertex of each V-shaped groove section, and a strip groove is correspondingly connected to the V-shaped vertex of each inverted V-shaped groove section; the cross sections of the strip grooves and the annular grooves are both V-shaped; The processing device comprises: a processing table, a positioning mechanism, a driving mechanism, a control mechanism and a laser processing mechanism; the processing table is provided with a slide rail arranged along a preset horizontal direction; the laser processing mechanism is installed on the processing table on one side of the slide rail; The positioning mechanism includes a first slide, a second slide, a first support plate, a second support plate, a first three-jaw chuck, a second three-jaw chuck and a motor; the first slide and the second slide are both connected to the slide rail in a sliding manner along a preset horizontal direction, and the driving mechanism is connected to the first slide and the second slide respectively, and the driving mechanism is used to simultaneously drive the first slide and the second slide to slide back and forth along the preset horizontal direction; the first support plate is installed on the first slide, and the second support plate is installed on the second slide, the first three-jaw chuck is rotatably installed on the first support plate, and the second three-jaw chuck is rotatably installed on the second support plate, and the first three-jaw chuck and the second three-jaw chuck are coaxially arranged face to face, and the first three-jaw chuck and the second three-jaw chuck are used to fix the rod body; the motor is installed on the first support plate and the motor is drivingly connected to the first three-jaw chuck, and the motor is used to drive the first three-jaw chuck to rotate; The control mechanism is used to control the coordinated actions of the driving mechanism, the motor and the laser processing mechanism to process the leaf vein-simulating composite microstructure on the surface of the rod body fixed by the first three-jaw chuck and the second three-jaw chuck; During the coordinated action, the control mechanism controls the driving mechanism, the motor and the laser processing mechanism to cooperate to process a plurality of strip-shaped grooves extending along the axial direction of the rod body and distributed in sequence and at equal intervals along the circumference of the rod body on the surface of the rod body fixed by the first three-jaw chuck and the second three-jaw chuck; Next, the control mechanism controls the driving mechanism, the motor and the laser processing mechanism to cooperate to process a plurality of annular grooves arranged along the circumference of the rod body and distributed in sequence and at equal intervals along the axial direction of the rod body on the surface of the rod body fixed by the first three-jaw chuck and the second three-jaw chuck.

2. The processing device for a rod body having a composite microstructure imitating leaf veins according to claim 1, characterized in that: During the processing of the strip trough body, the control mechanism determines the laser scanning path and laser processing parameters of the strip trough body according to the leaf vein-mimicking composite microstructure; wherein the laser scanning path of the strip trough body includes a plurality of strip scanning path layers arranged sequentially from top to bottom, each strip scanning path layer includes a plurality of parallel strip scanning paths, and the number of the strip scanning paths of the plurality of strip scanning path layers decreases sequentially from top to bottom, so that the cross section of the laser scanning path of the strip trough body is arranged in an inverted triangle from top to bottom; Next, the control mechanism controls the motor to rotate the rod body so that the position to be processed of the rod body is rotated to just below the laser processing mechanism. The control mechanism controls the laser processing mechanism and the driving mechanism to cooperate to perform laser scanning on the position to be processed of the rod body according to the laser scanning path of the strip trough body, and completes the processing of the first strip scanning path layer of the single strip trough body arranged from top to bottom; Next, repeat the above step until the processing of the first strip scanning path layer of all strip slots arranged from top to bottom is completed; Then, repeat the above two steps until the processing of the multi-layer strip scanning path layer of all strip grooves arranged from top to bottom is completed, and a plurality of strip grooves extending along the axial direction of the rod body are processed on the surface of the rod body and are arranged in sequence and at equal intervals along the circumference of the rod body.

3. The processing device for a rod body having a composite microstructure imitating leaf veins according to claim 2, characterized in that: During the processing of the first layer of strip scanning path layer of a single strip trough body arranged from top to bottom, the control mechanism controls the driving mechanism to drive the positioning mechanism to slide along a preset horizontal direction while controlling the laser processing mechanism to perform laser scanning, thereby completing the laser scanning of the single strip scanning path, and then performs laser scanning one by one to complete the processing of the first layer of strip scanning path layer of a single strip trough body arranged from top to bottom.

4. The processing device for a rod body having a composite microstructure imitating leaf veins according to claim 1, characterized in that: During the processing of the annular trough body, the control mechanism determines the laser scanning path and laser processing parameters of the annular trough body according to the leaf vein-simulating composite microstructure; wherein the laser scanning path of the annular trough body includes a plurality of annular scanning path layers arranged in sequence from the outside to the inside in the radial direction, each annular scanning path layer includes a plurality of parallel annular scanning paths, and the number of annular scanning paths of the plurality of annular scanning path layers decreases in sequence from the outside to the inside in the radial direction, so that the cross section of the laser scanning path of the annular trough body is arranged in an inverted triangle from the outside to the inside in the radial direction; Next, the control mechanism controls the driving mechanism to move the rod body in a preset horizontal direction, so that the position to be processed of the rod body is moved to just below the laser processing mechanism. The control mechanism controls the laser processing mechanism, the motor and the driving mechanism to cooperate to perform laser scanning on the position to be processed of the rod body according to the laser scanning path of the strip trough body and the laser processing parameters, and completes the processing of the first layer of the annular scanning path layer from the outside to the inside along the radial direction of the single annular trough body; Then, repeat the above step until the processing of the first layer of the annular scanning path layer of all the annular slots arranged from top to bottom is completed; Then, repeat the above two steps until all the annular grooves are processed in order from top to bottom, and a plurality of annular grooves arranged along the circumference of the rod body are obtained.

5. The processing device for a rod body having a composite microstructure imitating leaf veins according to claim 4, characterized in that: During the processing of the first layer of annular scanning path layer radially from the outside to the inside of a single annular groove body, the control mechanism controls the motor to rotate while controlling the laser processing mechanism to perform laser scanning, and at the same time controls the drive mechanism to move so that the rod body reciprocates along the preset horizontal direction while rotating, thereby completing the processing of the single annular scanning path, and then laser scanning is performed one by one to complete the processing of the first layer of annular scanning path layer radially from the outside to the inside of the single annular groove body.

6. The processing device for a rod body having a composite microstructure imitating leaf veins according to claim 5, characterized in that: During the machining of the single annular scanning path, the single annular scanning path includes a first annular path segment corresponding to the first slot body segment and a second annular path segment corresponding to the second slot body segment; The control mechanism first drives the mechanism to move the rod body along a preset horizontal direction so that the position to be processed on the rod body is located directly below the laser processing mechanism; Then, the motor is controlled to drive the rod body to rotate so that the middle part between any two adjacent strip-shaped groove bodies in the position to be processed on the rod body is located directly below the laser processing mechanism, and then the control mechanism controls the laser processing mechanism, the motor and the driving mechanism to cooperate to perform laser scanning from the middle to both sides according to the laser scanning path of the strip-shaped groove body and the laser processing parameters, until the first annular path segment or the second annular path segment is connected with the strip-shaped groove body, and the processing of the first annular path segment or the second annular path segment is completed; Then repeat the previous step until the processing of a single annular scanning path of a single annular groove body is completed.

7. A method for processing a rod body having a composite microstructure imitating leaf veins, characterized in that: The processing device for a rod body having a composite microstructure imitating leaf veins as claimed in any one of claims 1 to 6 is used, and the method comprises: S1: pre-processing the rod body; S2: installing the pretreated rod body on a processing device for a rod body having a composite microstructure imitating leaf veins; S3: using a processing device to etch a plurality of strip-shaped grooves extending along the axial direction of the rod body on the surface of the rod body, which are distributed in sequence and at equal intervals along the circumference of the rod body; S4: using a processing device to etch a plurality of annular grooves on the surface of the rod body, which are distributed in sequence and at equal intervals along the axial direction of the rod body and are arranged along the circumference of the rod body; S5: Cleaning the processed rod body to obtain a rod body with a leaf vein-mimicking composite microstructure.

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