An efficient machining method for array micro-texture on inner and outer surfaces of shaft parts based on abrasive grain orderly arranged tool

Abstract

The application relates to a kind of shaft parts inner and outer surface array micro-texture efficient processing methods based on abrasive grain order arrangement tool, first, facing different actuating mechanism kinematic pair, preferably determine the characteristics and distribution law of part inner and outer surface array micro-texture. Secondly, according to the characteristics and distribution law of required processing array micro-texture, the precision machining of tool base positioning groove is carried out to accurately position regular abrasive grains, ensure the consistency of abrasive grain protrusion height and pose. Then, the array micro-texture processing position and processing parameter design are carried out, and the array micro-texture processing scheme is formulated. The array micro-texture prediction model of shaft part inner and outer surface is established, and simulation verification is carried out through MATLAB, so that the processing scheme can be visualized and its feasibility can be determined. Finally, the array micro-texture processing of shaft part inner and outer surface is carried out, the simulation prediction result and the surface array micro-texture characteristics after actual processing are compared, and the processing effect is evaluated. The application solves the problem of difficult control and difficult processing of shaft part inner and outer surface array micro-texture.

Description

Technical Field

[0001] This invention proposes an efficient machining method for arrayed microtextures on the inner and outer surfaces of shaft parts based on abrasive grain ordered arrangement tools, particularly involving the control and machining of arrayed microtextures on the inner and outer surfaces of shaft parts, belonging to the field of machining technology. Background Technology

[0002] With the rapid development of modern industry, fields such as aerospace have placed further demands on the surface quality, mechanical and physical properties of titanium alloys, such as reducing friction, lowering wear, and improving the lubrication performance of friction pairs. As a result, surface array microtexturing technology has emerged. Under certain conditions, array microtexturing can effectively improve the mechanical and physical properties of mechanical parts, greatly enhance the wear resistance of materials, and increase the load-bearing capacity of parts, especially in applications with long-term loads. Currently, to study the microtexture features of part surfaces, it is necessary to first obtain the part's shaped surface and then select micro-manufacturing technology to prepare the microtexture surface, such as rolling, electrical discharge machining, wire cutting, laser processing, etching, etc. [Chen Pengyu, Cheng Lidong, Wang Chunju, et al. Research on current-assisted rolling forming process of microstructure of thin plate curved surface. Journal of Plasticity Engineering, 2019, 26(02):79-84] [Huang Jian. Preparation and process research of polymer functional surface microstructure based on ultrasonic embossing technology, [Master's thesis]. Tianjin: Tianjin University of Technology, 2020], laser shock embossing [Jing Yixin, Jing Yiying. Automatic film changing and microtexture of laser shock embossing]. Precision positioning device [P]. Jiangsu Province: CN202322763151.X, 2024-05-28]; Micro milling [Xiao Xiangwu, Liu Rong, Peng Ruitao, et al. A micro milling cutter for processing 3C titanium alloy components [P]. Hunan Province: CN202410469200.5, 2024-05-31] The microtexturing efficiency of these processing methods is relatively low. At the same time, the consistency of microtexturing accuracy cannot be guaranteed by processing the microtextured surface sequentially [Liu Baosheng, Wu Wei, Zeng Yuansong. Review of application and manufacturing technology of shark skin bionic structure. Journal of Plasticity Engineering, 2014(4):56-62].

[0003] Therefore, to address the challenges of controlling and machining arrayed microtextures on the inner and outer surfaces of shaft-type parts, this invention proposes an efficient machining method for arrayed microtextures on the inner and outer surfaces of shaft-type parts based on abrasive grain ordered arrangement tools, effectively improving the machining efficiency. Furthermore, the arrayed microtexture machining scheme designed in this paper can be visualized using a simulation model, allowing for a comparison between simulation predictions and the actual machined surface arrayed microtexture characteristics and distribution patterns to evaluate the machining effect. Summary of the Invention

[0004] Purpose of the invention: This invention addresses the shortcomings of existing technologies for controlling and processing array microtextures on the inner and outer surfaces of shaft parts. It proposes an efficient processing method for array microtextures on the inner and outer surfaces of shaft parts based on an ordered abrasive grain arrangement tool. The method uses an ordered abrasive grain arrangement tool to process the array microtextures, ensuring the consistency of the abrasive grain protrusion height and orientation. Ultimately, this achieves efficient processing of array microtextures on the inner and outer surfaces of shaft parts and control over the microtexture characteristics and distribution patterns, solving the problems of difficult control and processing of array microtextures on the inner and outer surfaces of shaft parts.

[0005] Technical solution: To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0006] The principle of the efficient machining method for array microtextures on the inner and outer surfaces of shaft parts is as follows: (1) For different motion pairs of actuating mechanisms, the array microtexture characteristics and distribution patterns on the inner and outer surfaces of the parts are optimally determined. (2) Based on the required array microtexture characteristics and distribution patterns, the tool with ordered abrasive grain arrangement is prepared. In addition, increasing the number of abrasive grains on the tool surface (from one to four) can effectively improve the machining efficiency of array microtextures and effectively reduce the wear rate of abrasive grains on the tool surface. Specifically, the tool substrate is precision machined with positioning grooves to accurately position regular abrasive grains and ensure the consistency of the abrasive grain protrusion height and posture. By controlling the distribution and posture of regular abrasive grains, the shape characteristics and distribution patterns of the array microtexture are controlled. (3) Design the processing position and processing parameters of the array microtexture on the inner and outer surfaces of shaft parts according to the target requirements of the array microtexture characteristics and distribution law and the abrasive grain orderly arrangement tool, and formulate the array microtexture processing scheme; (4) Establish a prediction model of the array microtexture on the inner and outer surfaces of shaft parts, and use MATLAB to calculate and simulate the established prediction model to obtain the simulation results of the array microtexture on the inner and outer surfaces of shaft parts, realize the visualization of the processing scheme, and use it to verify the feasibility of the processing scheme; (5) Perform array microtexture processing on the inner and outer surfaces of shaft parts, compare the simulation prediction results with the surface array microtexture characteristics after actual processing, and evaluate the processing effect.

[0007] The above-mentioned efficient machining method for array microtexturing on the inner and outer surfaces of shaft-type parts specifically includes the following steps:

[0008] Step 1: For different actuating mechanism kinematic pairs, optimize and determine the array microtexture characteristics and distribution patterns of the inner and outer surfaces of the parts, such as... Figure 1 As shown. The specific implementation steps are as follows: Analyze and calculate the array microtextures on the inner and outer surfaces of shaft-type parts, where any single microtexture p has a length of l. x Width is l y The adjacent microtextures in the circumferential direction are numbered p+1, and the intervals are d. x and d yThe adjacent microtextures in the generatrix direction are numbered p+q, with intervals of D respectively. x and D y .

[0009] The circumferential intervals are respectively d x and d y The calculation is shown in equation (1):

[0010]

[0011] The position of the microtexture p is denoted as The position of microtexture p+1 is calculated as shown in equation (2):

[0012]

[0013] Where f represents the reciprocating speed of the tool, v w Let Δt represent the rotational speed of the shaft-like parts, and let Δt represent the time interval between adjacent abrasive grains contacting the shaft-like parts. The calculation is shown in equation (3):

[0014] Δt=πd s / nv s (3)

[0015] Where, d s Indicates the diameter of the tool, v s The value represents the tool rotation speed, and n represents the number of microtextures that the tool with ordered abrasive grain arrangement possesses along the circumferential direction.

[0016] The number of micro-textures q on the inner and outer surfaces of shaft-type parts in the circumferential direction is calculated as shown in equation (4):

[0017]

[0018] Where ceil represents the negative floor function, and Δq represents the remainder. Therefore, the interval D in the generatrix direction of the inner and outer surfaces of shaft-like parts... x and D y The calculation is shown in equation (5):

[0019]

[0020] The position calculation of the microtexture (p+q) is shown in Equation (6):

[0021]

[0022] After machining, the length l of the microtexture on the inner and outer surfaces of the shaft-type parts x The calculation is shown in equation (7):

[0023]

[0024] θ(k) The calculation is shown in equation (8):

[0025]

[0026] The final calculation results of the microtexture length on the inner and outer surfaces of shaft-type parts are shown in Equation (9):

[0027]

[0028] The fabrication of array microtextures is accomplished by the intermittent cutting of the material by a tool with an ordered arrangement of abrasive grains. The length of the microtexture is determined by the abrasive grains rubbing against the material, and the width of the microtexture is determined by the contact width between the abrasive grains and the material.

[0029] Step Two: Based on the required array microtexture characteristics and distribution patterns, prepare the abrasive grain ordered arrangement tool. The specific implementation steps are as follows: Based on the analysis results of the array microtexture characteristics and distribution patterns in Step One, precisely machine the tool substrate with positioning grooves, such as... Figure 2 As shown, precise positioning of abrasive grains ensures that the abrasive grains on the tool surface are arranged in an orderly manner according to a specific pattern, such as... Figure 3 As shown.

[0030] Step 3: Based on Step 1 and Step 2, design the processing parameters for the array microtexture, and use tools with ordered abrasive grain arrangement to process the array microtexture, such as... Figure 4 As shown in the figure; and MATLAB software was used to visualize the parameter design results to verify the feasibility of the processing scheme. The specific implementation steps are as follows:

[0031] First, kinematic analysis was performed on the microtexture of the single abrasive grain machining array. Single abrasive grain machining, such as... Figure 5 As shown. This is because, from the initial design of the machining parameters, to avoid the chaotic microtexture distribution caused by an excessive number of abrasive grains, the design of the machining parameters is simplified. After the texture parameters of the single abrasive grain machining array position are determined, the machining parameters of multiple abrasive grains are determined, and the microtexture of the multi-abrasive grain machining array is as follows. Figure 6 As shown. Furthermore, it should be noted that the preparation of the granular ordered arrangement tool and the determination of the machining parameters are complementary and mutually influential. Therefore, a comprehensive consideration should be given when designing the tool and machining parameters to ultimately determine the machining scheme.

[0032] Step 4: Simulate the cutting process of the array microtexture using MATLAB software, and verify the machining scheme calculated in Step 3 through simulation, thus visualizing the machining scheme. The specific implementation steps are as follows:

[0033] First, based on the kinematic analysis of tools and shaft-like parts, the trajectory equations of abrasive particles during machining are established. A schematic diagram of array microtexture machining is shown below. Figure 4As shown, a coordinate system for shaft-like parts is established to represent the consistency of the abrasive grain trajectory. During the array microtexturing process, the shaft-like parts rotate at a constant speed, and the abrasive grains are arranged in an orderly manner. The tool is fed along the generatrix of the part, that is, abrasive grain 5 moves relative to shaft-like part 7 in the X direction of the coordinate system of the shaft-like parts with a reciprocating velocity f. The position of the abrasive grain... The variation with time t is shown in equation (10):

[0034]

[0035] θ st (k) Let represent the angle between the abrasive grain k and the grinding wheel spindle at time t. The calculation formula is shown in equation (11):

[0036]

[0037] Where x (k) ,y (k) and z (k) This indicates the initial position of the abrasive grains in the tool, v. w ,v s f and z represent the rotational speed of shaft parts, the rotational speed of tools, and the reciprocating speed of tools, respectively; max Indicates the maximum protrusion height of the abrasive grains; z (k) This indicates the protrusion height of abrasive grain k.

[0038] θ wt (k) Let represent the angle between the abrasive grain k and the workpiece spindle at time t. The calculation formula is shown in equation (12).

[0039]

[0040] After the array microtexturing process is completed, the morphology of the inner and outer surfaces of the shaft parts is determined by the amount of material remaining. The final amount of material remaining is the result after the cutting is completed, and the calculation formula is shown in Equation (13):

[0041]

[0042] Z R (k) n represents the remaining material after abrasive processing (k). g This represents the total number of abrasive grains.

[0043] Step 5: Based on the ordered arrangement tools and determined machining scheme prepared in the above steps, simulation and experimentation of array microtexture machining on the inner and outer surfaces of shaft parts are conducted. The array microtextures obtained from simulation and experimentation under different tools and machining parameters are shown below. Figure 7 , Figure 8 and Figure 9As shown, the processing effect is evaluated by comparing the simulation prediction results with the actual surface array microtexture characteristics and distribution patterns after processing.

[0044] In order to ensure that the abrasive grains are regular and have good consistency, the grains should have sufficient size, and the grain mesh size should be 40-45 mesh. In order to ensure that shaft parts can be removed better, the tool speed range is 20-40 m / s. The speed of shaft parts and the reciprocating speed of the tool axis are determined according to the control scheme of array microtexture. In order to obtain a clear and consistent microtexture, the abrasive cutting depth is not less than 5 μm.

[0045] The beneficial effects of this invention are:

[0046] (1) This invention proposes an efficient machining method for the array microtexture of the inner and outer surfaces of shaft parts based on an abrasive grain ordered arrangement tool. It establishes a preparation scheme for the abrasive grain ordered arrangement tool and an array microtexture machining scheme to achieve efficient machining and precise control of the surface array microtexture.

[0047] (3) The present invention establishes a prediction model for the array microtexture of the inner and outer surfaces of shaft parts, which can realize the visualization of the processing scheme and verify the feasibility of the processing scheme.

[0048] (4) The array microtexture processing method proposed in this invention can use the same tool to complete the processing of array microtexture on the inner and outer surfaces of shaft parts, avoiding the positioning error caused by secondary clamping, and simplifying the processing steps and processing equipment. Attached Figure Description

[0049] Figure 1 This is a feature diagram of the microtexture array on the inner circular surface of shaft-type parts;

[0050] Figure 2 This is a schematic diagram of the groove 2 on the substrate of the micro-milling cutter machining tool;

[0051] Figure 3 It is the distribution pattern of abrasive grains 5 after the tool matrix 2 is unfolded;

[0052] Figure 4 This is a schematic diagram of the micro-textured cutting process for the inner circular surface of shaft-type parts;

[0053] Figure 5 This is a schematic diagram of a tool for machining a single abrasive grain;

[0054] Figure 6 This is a schematic diagram of a tool with four abrasive grains arranged in an orderly manner along the circumference.

[0055] Figure 7 These are microtexture images of the outer cylindrical surface of a shaft-type part cut by a single abrasive grain, where (a) is the simulation result and (b) is the machining result.

[0056] Figure 8 The microtexture is an array of 4 abrasive grains cutting the outer cylindrical surface of a shaft-type part. (a) is the simulation result and (b) is the machining result.

[0057] Figure 9 The microtexture is an array of 4 abrasive grains cutting the outer cylindrical surface of a shaft-type part. (a) is the simulation result and (b) is the machining result.

[0058] In the diagram: 1. Micro-milling cutter; 2. Tool body; 3. Tool spindle; 4. Machine tool support frame; 5. Abrasive grains; 6. Three-jaw chuck; 7. Shaft parts; 8. Machine tool guideway. Detailed Implementation

[0059] The invention will be further described in detail below with reference to the accompanying drawings and specific examples:

[0060] Example 1

[0061] This invention proposes an efficient machining method for arrayed microtextures on the inner and outer surfaces of shaft parts based on abrasive grains with ordered arrangement. The method is specifically illustrated using the machining of an inner circular arrayed microtexture on a titanium alloy shaft part. To improve the consistency of the arrayed microtexture, superhard abrasives, specifically diamond abrasives, are used for cutting the inner circular arrayed microtexture of the titanium alloy shaft tube. The diamond grains used have a mesh size of 40-45. A schematic diagram of the abrasive grain machining process is shown below. Figure 4 As shown, the steps are as follows:

[0062] (1) For the kinematic pairs of the actuating mechanism, the characteristics and distribution patterns of the array microtexture on the inner surface of the part are preferably determined, and the characteristics and distribution patterns of the target array microtexture are determined, wherein the length of the microtexture is l. x =270μm, the width of the microtexture is l y =80μm, the spacing between microtexture distributions is d x =330μm,D x =180μm,D y =200μm. Furthermore, the array microtexture should be arranged regularly and evenly. Based on the theoretical analysis of formulas (1-9) above, the fabrication and processing parameters of the diamond ordered arrangement tool are designed, and an array microtexture processing scheme is formulated. First, a positioning groove is precisely machined on the tool substrate 2 using a micro-milling cutter to accurately position the regular abrasive grains. The positioning groove on the tool substrate surface can effectively ensure the consistency of the protrusion height and pose of the regular abrasive grains on the tool surface, completing the fabrication of the abrasive grain ordered arrangement tool. In addition, increasing the number of abrasive grains on the tool surface can effectively improve the array microtexture processing efficiency and effectively reduce the wear rate of the abrasive grains on the tool surface.

[0063] (2) The shaft part 7 (titanium alloy shaft part) is mounted on the machine tool spindle via a three-jaw chuck 6, and the diamond abrasive grain orderly arrangement tool is mounted on the tool rotating spindle 3. To ensure that the diamond abrasive grains accurately cut the material on the inner cylindrical surface of the part during the array microtexturing process, the diamond abrasive grain orderly arrangement tool should be aligned with the center height of the shaft part. In addition, it is necessary to ensure that the tool does not interfere with other parts of the shaft part during the machining process.

[0064] (3) To demonstrate the control of the cutting array microtexture by the present invention, the following was selected Figure 4 The abrasive grains in the tool are arranged in an orderly manner. The tool is installed parallel to the generatrix of the shaft part. Different machining parameters are set to cut the inner cylindrical surface of the titanium alloy. The machining parameters are shown in Table 1.

[0065] Table 1 Cutting Parameters

[0066] tool speed Workpiece rotation speed reciprocating speed Depth of cut Number of abrasive grains 5997rpm 100rpm 100mm / min 15μm 1 5997rpm 400rpm 400mm / min 15μm 4 5997rpm 200rpm 80mm / min 10μm 4 5997rpm 800rpm 80mm / min 7μm 4

[0067] (4) The cutting array microtexture after the array microtexture processing was predicted using MATLAB software. In the simulation model, the inner diameter of the titanium alloy shaft part was 50 mm. The simulation prediction results of the cutting array microtexture of the titanium alloy inner circle are as follows: Figure 7 (a), Figure 8 (a) and Figure 9 As shown in (a).

[0068] Specifically, the machining parameters are designed as follows: For a single abrasive grain, the tool... Figure 5 As shown, the machining parameters are tool speed v s =5997 rpm, rotational speed v of shaft-type parts w =100rpm, tool reciprocating speed f = 100mm / min, cutting depth a p When the microstructure is 15 μm, the simulated array microtexture is as follows: Figure 7 As shown in (a), with 4 abrasive grains in the circumferential direction of the tool, and under the same array microtexture, the machining parameters are designed with the tool rotation speed v. s =5997 rpm, rotational speed v of shaft-type parts w =400rpm, tool reciprocating speed f = 400mm / min, cutting depth a p At a micrometer size of 15 μm, the array microtexture characteristics and distribution patterns remain consistent after machining, resulting in a 4-fold increase in machining efficiency. Furthermore, the number of abrasive grains on the tool surface effectively extends tool life; a single microtexture is machined by multiple abrasive grains, effectively reducing abrasive wear rate. The orderly arrangement of abrasive grains in the tool... Figure 3 As shown. Its machining parameters are tool speed v. s =5997 rpm, rotational speed v of shaft-type partsw =800rpm, tool reciprocating speed f = 800mm / min, cutting depth a p When the microstructure is 10 μm, the simulated array microtexture is as follows: Figure 8 As shown in (a). By changing the machining parameters, effective control over the machining of the array microtexture position can be achieved. The machining parameter is changed to the tool rotation speed v. s =5997 rpm, rotational speed v of shaft-type parts w =800rpm, tool reciprocating speed f = 800mm / min, cutting depth a p When the microstructure is 7 μm, the simulated array microtexture is as follows: Figure 9 As shown in (a).

[0069] (5) According to the cutting parameter table set in step (3), conduct array microtexture processing experiments. The array microtexture features of the inner circular surface after processing are as follows: Figure 7 (b), Figure 8 (b) and Figure 9 As shown in (b), the simulation prediction results and the surface array microtexture characteristics after actual processing were compared. The control of the array microtexture characteristics and distribution law was realized by using a diamond abrasive grain ordered arrangement tool. In addition, the distribution law of the array microtexture can be changed by changing the processing parameters under different processing parameters using the same tool.

[0070] (6) The processing effect is evaluated by comparing the simulation prediction results with the surface array microtexture characteristics and distribution patterns after actual processing. The simulation and processing results of the inner circular surface of titanium alloy shaft parts under the processing parameters in Table 1 are as follows: Figure 7 , Figure 8 and Figure 9 As shown, the shape characteristics and distribution patterns of its array microtexture have good consistency and exhibit a uniform distribution.

[0071] (7) After completing the inner circle surface array microtexture processing, adjust the processing position of the abrasive grain orderly arrangement tool and the titanium alloy shaft part so that the tool is in contact with the outer circle of the shaft part. Repeat the above inner circle surface array processing steps of the shaft part to realize the processing of the outer circle surface array microtexture of the shaft part.

[0072] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A method for efficient machining of array microtextures on the inner and outer surfaces of shaft parts based on abrasive grain ordered arrangement tools, characterized in that, The steps are as follows: (1) For different actuation mechanism kinematic pairs, determine the array microtexture characteristics and distribution law of the inner and outer surfaces of the parts; (2) Based on the microtexture features and distribution patterns of the processing array required in step (1), the tool substrate is precisely machined with positioning grooves to accurately position the regular abrasive grains, ensuring the consistency of the abrasive grain protrusion height and pose, and completing the preparation of the tool with orderly abrasive grain arrangement; (3) Based on the target requirements of the array microtexture characteristics and distribution law of the inner and outer surfaces of shaft parts, design the array microtexture processing position and processing parameters, and formulate the array microtexture processing scheme; (4) Establish a prediction model for the array microtexture of the inner and outer surfaces of shaft parts, and verify it through simulation using MATLAB to visualize the processing scheme and determine its feasibility; (5) Based on the processing scheme determined in step (3), perform micro-texture processing on the inner and outer surfaces of shaft parts, compare the simulation prediction results of step (4) with the actual surface micro-texture features after processing, and evaluate the processing effect. In step (1), the array micro-texture features and distribution rules of the inner and outer surfaces of the shaft parts, for any single micro-texture p, the length of the micro-texture is l x , the width is l y ; the serial number of the adjacent micro-texture in the circumferential direction is defined as p+1; the serial number of the adjacent micro-texture in the generatrix direction is defined as p+q; The intervals dx and dy of the arrayed microtextures on the inner and outer surfaces of shaft-type parts in the circumferential direction are calculated as shown in equation (1): (1) The position of the microtexture p is denoted as (X p (k) Y p (k) Z p (k) The position of microtexture with index p+1 is calculated as shown in equation (2): (2) Where f represents the reciprocating speed of the tool, v w Let Δt represent the rotational speed of the shaft-type parts, and let Δt represent the time interval between the contact between adjacent abrasive grains in the circumferential direction. The calculation is shown in equation (3). (3) Where, d s Indicates the diameter of the tool, v s The value represents the tool rotation speed, and n represents the number of abrasive grains in the circumferential direction of the ordered tool arrangement. The number of micro-textures q on the inner and outer surfaces of shaft-type parts in the circumferential direction is calculated as shown in equation (4): (4) Where ceil represents the negative floor function, Δq represents the remainder, and d w Indicates the diameter of the workpiece; Therefore, the spacing D in the generatrix direction of the inner and outer surfaces of shaft-type parts x and D y The calculation is shown in equation (5): (5) The position calculation of the microtexture p+q is shown in equation (6): (6) After processing, the length l of the microtexture x The calculation is shown in equation (7): (7) θ (k) The calculation is shown in equation (8): (8) a p This refers to the depth of cut. The final calculated result of the microtexture length is shown in equation (9): (9)； In step (4), establishing a prediction model for the microtexture array on the inner and outer surfaces of shaft-type parts includes the following steps: First, based on the kinematic analysis of the tool and shaft-like parts, the trajectory equation of the abrasive grains during machining is established; the abrasive grains move relative to the shaft-like parts in the X direction of the shaft-like part coordinate system with the tool's reciprocating velocity f, and the position of the abrasive grains (X... t (k) ,Y t (k) Z t (k) The motion law with time t is shown in equation (10): (10) θ st (k) Let represent the angle between the abrasive grain k and the grinding wheel spindle at time t. The calculation formula is shown in equation (11): (11) Where x (k) , y (k) and z (k) This indicates the initial position of the abrasive grains in the tool, v. w , v s f and z represent the rotational speed of shaft parts, the rotational speed of tools, and the reciprocating speed of tools, respectively; max Indicates the maximum protrusion height of the abrasive grains; z (k) This indicates the protrusion height of the abrasive grain k; θ wt (k) Let represent the angle between the abrasive grain k and the workpiece spindle at time t. The calculation formula is shown in equation (12). (12) After the array microtexturing process is completed, the formation of microtextures on the inner and outer surfaces of shaft parts is determined by the final material residue, and the calculation formula is shown in equation (13): (13) Simulations yielded the array microtexture characteristics and distribution patterns under different processing parameters, where Z... R (k) n represents the amount of material remaining after abrasive processing (k). g This represents the total number of abrasive grains.

2. The efficient machining method for array microtexture of inner and outer surfaces of shaft parts based on abrasive grain ordered arrangement tool, as described in claim 1, is characterized in that... The implementation process of step (2) is as follows: the tool substrate is precisely machined with positioning grooves by micro milling cutter, the regular abrasive grains are accurately positioned, the protrusion height and pose of the abrasive grains are controlled, and finally the shape consistency control of the array microtexture is achieved. The aforementioned microtexture is achieved by cutting with one or more abrasive grains. There are four abrasive grains, symmetrically distributed around the outer periphery of the tool matrix.

3. The efficient machining method for array microtexture of inner and outer surfaces of shaft parts based on abrasive grain ordered arrangement tool, as described in claim 1, is characterized in that: In step (3), the machining parameters include tool speed, part speed, depth of cut and tool reciprocating speed.

4. The efficient machining method for array microtexture of inner and outer surfaces of shaft parts based on abrasive grain ordered arrangement tool, as described in claim 1, is characterized in that: The abrasive grain size ranges from 40 to 45 mesh, the tool rotation speed ranges from 20 to 40 m / s, and the abrasive cutting depth is not less than 5 μm.

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