Optimized machining method for oil passing hole of automobile clutch

Abstract

The invention relates to the technical field of oil passing holes, and discloses an automobile clutch oil passing hole optimization machining method which comprises the steps that clutch workpiece requirement parameters are obtained, and drilling data of a drill bit are set according to the clutch workpiece requirement parameters; setting a multi-hole synchronization path and an optimal drilling sequence; a high-frequency micro-vibration and spraying synchronization strategy is executed, high-frequency micro-vibration is used for drilling, and an oleophobic functional nano coating is synchronously sprayed to the inner wall of a hole; executing a negative pressure chip pumping auxiliary strategy, sucking chips generated in the drilling process by utilizing negative pressure, monitoring real-time drilling parameters in the drilling process in real time, and judging whether the current drilling state is in a stable processing interval or not according to the real-time drilling parameters; executing a local laser deburring strategy, and performing tiny thermal blasting on local parts in the hole by adopting focused laser pulses to clean burrs; judging whether the hole machining quality reaches the standard or not according to the quality detection data; and the processing stability and the coating consistency are improved, and the defect rate is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of oil hole processing, in particular to an optimized processing method for an oil hole of an automobile clutch. Background Art

[0002] As a key component in the automotive transmission system, the performance and stability of the clutch are directly related to the vehicle's power output and handling performance. To ensure reliable operation of the clutch under high-frequency starting, friction, and cooling conditions, the clutch housing or pressure plate is typically equipped with multiple tiny oil holes to facilitate rapid distribution and return of lubricant. The machining quality of these oil holes directly affects lubrication efficiency and service life. Therefore, developing a process for efficient and precise machining of clutch oil holes has significant engineering value and industrial application prospects.

[0003] The existing processing technology for automobile clutch oil holes mostly adopts traditional drilling methods, which have the following technical defects: due to the small hole diameter and dense distribution, the traditional drilling process is prone to problems such as poor chip removal and chip accumulation in the hole, affecting processing efficiency and hole quality; the synchronous integration capability of the coating function on the inner wall of the hole is weak, and it is necessary to rely on post-processing steps to increase process time and cost; there is a lack of real-time feedback control of the drilling process status, making it difficult to adjust parameters in time, and prone to defects such as hole wall ablation and coating damage; manual deburring operations are mostly used for local curved surfaces or special-shaped holes, resulting in poor consistency and low efficiency; the overall processing process has not achieved synchronous path optimization and full-process quality closed-loop control, making it difficult to meet the requirements of high consistency and automated production.

[0004] This invention provides an optimized machining method for automotive clutch oil holes. By integrating high-frequency micro-vibration drilling, synchronous spraying, negative pressure chip extraction, and laser deburring strategies, this method establishes an intelligent closed-loop machining process, achieving high-precision and high-efficiency machining of oil holes. This method improves machining stability and coating consistency, reduces defect rates, and addresses challenges inherent in traditional processes such as difficult chip removal, frequent burrs, and high quality fluctuations. It is therefore suitable for automated mass production. Summary of the Invention

[0005] The present invention provides an optimized processing method for an oil hole of an automobile clutch, which is used to promote the solution of the problems mentioned in the above background technology.

[0006] In a first aspect, the present application provides a method for optimizing the processing of an oil hole of an automobile clutch, which adopts the following technical solution: A method for optimizing the processing of an oil hole of an automobile clutch, comprising:

[0007] S1. Establish a reference surface facing the machining surface, fix the clutch workpiece in the positioning fixture, and make the hole position consistent with the fixture reference surface;

[0008] Obtain clutch workpiece required parameters, and set the drilling data of the drill bit according to the clutch workpiece required parameters;

[0009] S2, locate the hole coordinates, set the multi-hole synchronous path and the optimal drilling sequence;

[0010] Implement a high-frequency micro-vibration and spraying synchronization strategy, using high-frequency micro-vibration to drill holes and simultaneously spraying oleophobic nano-coating on the inner wall of the hole;

[0011] S3, implement the negative pressure chip extraction auxiliary strategy, set up a micro negative pressure chip extraction channel at the bottom of the hole, use the negative pressure to suck the chips generated during the drilling process, and discharge the chips out of the processing area;

[0012] S4. Real-time monitoring of drilling parameters during the drilling process, and judging whether the current drilling state is in a stable processing range based on the real-time drilling parameters;

[0013] If it is judged to be in an unstable state, the adaptive adjustment strategy of the drilling parameters is executed to dynamically change the feed speed, micro-vibration frequency or spray flow rate;

[0014] S5. Based on the different hole diameters and curved surfaces, a local laser deburring strategy is implemented, using focused laser pulses to perform micro-thermal blasting to remove burrs locally within the hole.

[0015] S6. After drilling is completed, quality inspection data of the target hole is obtained;

[0016] Determine whether the hole processing quality meets the standards based on the quality inspection data. If it meets the standards, proceed to the next hole processing process. If it does not meet the standards, mark the defective hole and perform reprocessing or coating repair operations;

[0017] Complete the synchronous processing and inspection process of all holes in sequence.

[0018] A series of innovative technologies have been employed to optimize the machining process for automotive clutch oil holes. First, precise positioning and datum plane establishment ensure high machining accuracy. Second, high-frequency micro-vibration and spraying synchronization improve hole wall quality and the uniformity of the functional coating. Third, a vacuum chip extraction strategy effectively addresses chip removal during deep-hole drilling. Real-time monitoring and adaptive adjustment mechanisms ensure process stability, while localized laser deburring overcomes the limitations of traditional deburring methods.

[0019] Preferably, the establishment of the reference surface is oriented toward the machining surface, and the clutch workpiece is fixed in the positioning fixture so that the hole position is consistent with the fixture reference surface, including:

[0020] Obtain the three-dimensional structure data, oil hole coordinate parameters and hole number distribution information of the clutch workpiece to be processed;

[0021] According to the clutch workpiece geometry information and processing requirements, select the processing surface orientation as the reference plane;

[0022] Fix the clutch workpiece in a dedicated positioning fixture, and place the machined surface of the clutch workpiece toward the reference surface;

[0023] Ensure that the machining surface of the workpiece is consistent with the reference surface, and the hole position is aligned with the fixture reference surface;

[0024] Obtaining clutch workpiece required parameters, wherein the clutch workpiece required parameters include workpiece material, aperture requirements, and coating characteristics;

[0025] Select the corresponding drill type and specifications according to the material and hole diameter requirements of the workpiece;

[0026] According to the clutch workpiece required parameters, the drilling data of the drill bit is set, and the drilling data includes drilling speed, feed rate, high-frequency micro-vibration frequency and spraying parameters;

[0027] According to the drilling data of the drill bit and the required parameters of the clutch workpiece, the drilling process is started to complete the hole processing operation.

[0028] By obtaining the three-dimensional structural data, hole position parameters and other information of the clutch workpiece, and setting the drill type and drilling data in combination with material and process requirements, the drilling conditions can be adapted to different materials and sizes, achieving personalized parameter configuration, reducing human judgment errors, and improving drilling accuracy and hole wall quality.

[0029] Preferably, the positioning hole coordinates, setting the multi-hole synchronous path and the optimal drilling sequence include:

[0030] Establish the local coordinate system of the clutch workpiece and calibrate the initial origin position;

[0031] Locate the spatial coordinate information of all processed holes, including the hole position, hole axis direction, and hole depth;

[0032] Set the set of all holes to be processed as P, which is denoted as P = {p1, p2, ..., p n}, p i =(x i ,y i , z i ), where p i =(x i ,y i , z i ) represents the coordinate position of the i-th hole, p n Indicates that there are n holes to be processed;

[0033] Utilize the industrial control path optimization algorithm to perform path optimization calculations on all hole positions and generate the shortest processing path;

[0034] Setting hole p i To hole p j The processing movement cost is

[0035] Assume that all path sequences are π = {π1, π2, ..., π m}, the shortest processing path is Where k represents the kth hole in the path, Represents the distance from the kth hole to the k+1th hole.

[0036] By constructing the local coordinate system of the workpiece and the set of spatial coordinates of the hole positions, and introducing the industrial control path optimization algorithm to determine the optimal drilling sequence, the spindle movement path and non-processing time are effectively reduced, and the utilization rate of the drilling path is improved. It is suitable for batch multi-hole structure processing scenarios and significantly improves the efficiency of multi-hole synchronous processing.

[0037] Preferably, the implementation of the high-frequency micro-vibration and spraying synchronization strategy, using high-frequency micro-vibration to drill a hole and simultaneously spraying an oleophobic nano-coating on the inner wall of the hole, includes:

[0038] Superimpose high-frequency axial micro-vibration during the drill bit feeding process;

[0039] Set the micro-vibration feed signal superposition model z(t), z(t)=z0+A·sin(2πf v t), where z0 represents the normal drilling axial position, A represents the micro-vibration amplitude, and f v Indicates the micro-vibration frequency;

[0040] The actual feed speed after superposition is v z (t),

[0041] During the drill bit retraction phase, the spraying device is automatically activated, and multi-axis coordinated control is used to evenly spray the oleophobic nano-coating material on the inner wall surface of the hole.

[0042] According to the hole surface characteristics, which include surface shape, surface curvature and hole size, the spraying particle size, pressure and spraying angle are controlled;

[0043] After spraying, use natural airflow to dry.

[0044] By superimposing high-frequency micro-vibration during drilling feed and simultaneously spraying an oleophobic functional coating during the retraction stage, the lubrication and oil conduction functions of the hole wall are improved, burr formation is suppressed, and the surface finish inside the hole is improved; the coating particle size, angle, and pressure are dynamically controlled to effectively improve the spraying uniformity and functional durability, thereby achieving precise functional processing inside the hole.

[0045] Preferably, the negative pressure chip extraction auxiliary strategy is implemented, a micro negative pressure chip extraction channel is set at the bottom of the hole, and the chips generated during the drilling process are sucked in by negative pressure to discharge the chips out of the processing area, including:

[0046] Obtain target hole position parameters, including hole diameter, hole depth, processing material, and drilling method required for processing;

[0047] According to the target hole position parameters, at least one micro negative pressure chip extraction channel is preset at the bottom of the target hole, and the micro negative pressure chip extraction channel passes through the clutch workpiece and is connected to the external negative pressure;

[0048] During the drilling process, the critical depth h of the hole is set;

[0049] When the drill bit feeds to a hole depth exceeding the preset critical depth h, negative pressure chip extraction is triggered.

[0050] Negative pressure airflow is applied to form an attraction field along the axial direction of the hole, which sucks out the chips generated during the drilling process and discharges the chips out of the processing area.

[0051] By setting a micro negative pressure chip extraction channel at the bottom of the hole and triggering the chip extraction device when drilling to the critical depth, the chips are continuously sucked out of the processing area in the hole to prevent chip accumulation from causing blockage, overheating and tool wear, thus achieving efficient chip removal processing of deep holes and small holes, effectively extending tool life and improving drilling continuity and stability.

[0052] Preferably, the real-time monitoring of the real-time drilling parameters during the drilling process and judging whether the current drilling state is in a stable processing range according to the real-time drilling parameters include:

[0053] Real-time monitoring of drilling parameters during the drilling process, including feed speed, micro-vibration frequency, spraying pressure and speed;

[0054] According to the clutch workpiece requirement parameters and real-time drilling parameters, the stable machining interval threshold segment of each drilling parameter is set to [p1, p2];

[0055] Compare and analyze the real-time drilling parameters with the threshold segment [p1, p2];

[0056] If all real-time drilling parameters are within the threshold range [p1, p2], the current drilling state is stable;

[0057] If any real-time drilling parameter is not within the threshold range [p1, p2], the current drilling state is unstable and the adaptive adjustment strategy of the drilling parameters is executed;

[0058] Optimize and adjust according to different abnormal characteristics:

[0059] Adjust the feed rate to match the current drilling load;

[0060] Adjust the micro-vibration frequency and amplitude to suppress abnormal vibration and improve chip removal capacity;

[0061] Adjust the spraying flow rate and pressure to improve the lubrication and cooling condition of the hole wall.

[0062] By collecting multiple key parameters during the drilling process in real time and comparing and analyzing them with the preset stable range, it is possible to promptly determine whether the drilling state is stable. If abnormal, the drilling speed, micro-vibration frequency or spraying parameters are dynamically adjusted to effectively improve the adaptive ability of the drilling process and achieve stable processing control of the entire process under complex working conditions.

[0063] Preferably, the local laser deburring strategy is implemented according to the different hole diameters and curved surfaces of the hole positions, and the burrs are removed by performing micro thermal blasting on the local area of ​​the hole using focused laser pulses, including:

[0064] Obtain burr distribution data on the target hole surface;

[0065] According to the different hole diameters and curved surfaces of the hole positions, set the laser processing strategy that matches the hole diameter and curved surface;

[0066] According to the hole depth and burr location, set the laser focus distance to d1;

[0067] According to the clutch workpiece material type and burr adhesion strength, the laser pulse energy is set to e1;

[0068] Control the multi-axis laser head to enter the target position in the hole for scanning;

[0069] Applying short-duration, high-energy-density laser pulses creates a localized micro-thermal explosion effect in the burr area, instantly melting the burr metal structure.

[0070] After cleaning is completed, the deburred area in the hole is re-scanned. If burrs are detected, a second laser deburring is performed.

[0071] By setting the laser focusing parameters according to the aperture and surface characteristics, and controlling the laser pulse to perform local thermal blasting in the burr area, tiny burrs in the hole that are difficult to reach with traditional methods can be effectively removed, avoiding the reduction in sealing and component interference caused by burr residue, improving the quality of the finished hole, and adapting to complex and special-shaped internal hole structures.

[0072] Preferably, the method of judging whether the hole processing quality meets the standards based on the quality inspection data, and if so, entering the next hole processing process, and if not, marking the defective hole and performing reprocessing or coating repair operations, includes:

[0073] After the target hole drilling operation is completed, the hole processing completion signal is automatically issued and the hole quality assessment operation is performed;

[0074] Obtaining quality inspection preparation parameters R, including inspection preparation parameter inspection method, hole position number, inspection tolerance standard and surface defect judgment rule;

[0075] Set the target quality monitoring parameter R1 and calculate the quality parameter difference ΔR=R-R1;

[0076] Set the quality parameter threshold to Compare the quality detection preparation parameter R with the quality parameter threshold ΔR;

[0077] If all quality parameter differences ΔR are less than the quality parameter threshold It is recorded as a qualified hole;

[0078] If any quality parameter difference ΔR is greater than the quality parameter threshold It is an unqualified hole and the hole coordinates are recorded;

[0079] Perform corresponding compensation processing based on the vacancy coordinates and defect types of unqualified holes;

[0080] If there is a slight hole diameter deviation or burrs remain, perform local hole repair and reprocessing;

[0081] If the inner wall is damaged, the coating is missing or the shape is distorted, perform micro-repair of the inner wall or re-coating;

[0082] After machining is completed, all holes are optimized.

[0083] By immediately testing the processing quality of each hole after it is processed and judging whether it is qualified based on the inspection standards, reprocessing or coating repair operations are implemented if it is unqualified, closed-loop control is achieved, preventing bad holes from flowing into the assembly process, and improving the yield and consistency of the entire batch processing.

[0084] The present invention has the following beneficial effects:

[0085] 1. This is an optimized processing method for the oil holes of automobile clutches. Through the establishment of standardized reference planes and the setting of multi-hole synchronous processing paths in this solution, the hole positions can be aligned with the fixture reference plane to ensure the starting accuracy of processing. At the same time, the combination of high-frequency micro-vibration drilling and path optimization algorithm can not only improve the stability of the drilling process, but also significantly improve the processing efficiency of multi-hole positions. While improving the cutting performance of the drill bit, micro-vibration control effectively reduces the surface roughness of the hole wall, thereby improving the consistency of the hole diameter and the hole forming accuracy. The optimal path planning shortens the processing cycle by reducing the total length of the drilling path and the number of drill bit movements. In addition, with the help of automated process control, the entire processing process can achieve high-efficiency operation, which is particularly suitable for the processing scenarios of high-density distributed small holes, meeting the dual requirements of high efficiency and high precision for the complex structure of modern automobile clutches.

[0086] 2. This optimized processing method for the oil hole of an automobile clutch improves the intelligent response capability of the system by introducing real-time monitoring and parameter adaptive adjustment strategies during the processing. By collecting parameters such as drilling feed speed, micro-vibration frequency, and spray flow rate in real time and comparing them with the set threshold value of the stable processing range, the system can automatically determine whether the current processing state is stable. If an unstable state occurs, the parameter adjustment action will be quickly executed to achieve dynamic closed-loop control. In conjunction with the micro-negative pressure chip extraction channel at the bottom of the hole, chips can be discharged in real time during deep hole processing to avoid problems such as chip blockage and overheating, while reducing drill bit wear and improving processing continuity and stability. This linkage control strategy of intelligent regulation and auxiliary chip removal effectively avoids the influence of human error or parameter fluctuations on processing quality, and significantly enhances the stability and automation of the processing process.

[0087] 3. This is an optimized processing method for the oil hole of an automobile clutch. After the processing in the hole is completed, a local laser deburring process is performed. The residual burrs on the hole wall are locally thermally blasted using focused laser pulses to ensure that the burrs are completely removed without damaging the structure in the hole. The laser parameters are precisely set according to the hole diameter, hole depth and material properties to meet the processing requirements of holes of different complexities. Subsequently, the oleophobic functional nano-coating is sprayed synchronously. Through multi-axis collaborative precision control of the spraying flow rate, angle and particle size, the coating is evenly covered on the surface of the inner wall of the hole, enhancing its oleophobicity, corrosion resistance and wear resistance. The combination of this process chain not only improves the functionality in the hole, but also increases the overall service life of the hole. It is particularly suitable for automobile clutch structural parts under high-demand and high-frequency working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] Figure 1 Schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0089] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0090] Example 1, refer to Figure 1 , an optimized processing method for an oil hole of an automobile clutch, comprising:

[0091] S1. Establish a reference surface facing the machining surface, fix the clutch workpiece in the positioning fixture, and make the hole position consistent with the fixture reference surface, including:

[0092] Establish a reference surface that is consistent with the orientation of the machining surface, fix the clutch workpiece in the positioning fixture, and make the hole position consistent with the fixture reference surface; obtain the required parameters of the clutch workpiece and set the drilling data of the drill bit according to the said parameters; obtain the three-dimensional structure data of the clutch workpiece, the coordinates of the oil hole and the distribution information of the number of holes; set the machining surface as the reference surface and fix the workpiece in the fixture; select a suitable drill bit and set the drilling speed, feed rate, high-frequency micro-vibration frequency and spraying parameters.

[0093] By implementing adaptive parameter settings to adapt to different materials and structural forms, the automation and process adaptability in the early preparation stage can be improved, thereby improving overall processing efficiency.

[0094] S2. Implement a high-frequency micro-vibration and spraying synchronization strategy, using high-frequency micro-vibration to drill holes and simultaneously spraying an oleophobic nano-coating on the inner wall of the hole, including:

[0095] The set of all holes to be processed is set to P, with a total of n holes. Using the path optimization algorithm, the fixture reference surface is used as the initial origin to calculate the shortest drilling path and obtain the optimal drilling sequence. By reducing unnecessary paths and turning operations, the overall processing time is shortened by about 18%. A super-hard alloy micro-drill bit with a high-frequency micro-vibration device is selected, and axial vibration is performed at a frequency of 5kHz and an amplitude of 5μm during the feeding process. The vibration signal controls the real-time feed speed with a superposition model. After drilling is completed, the spraying device is automatically started to spray the oleophobic nano-coating material, and the spraying pressure is adjusted to 0.3MPa and the angle is 45° to cover the hole wall surface. After spraying is completed, compressed air is used for rapid drying. The measured uniformity of the coating adhered to the hole wall is increased by 25%, and the oleophobic angle is increased by 12°.

[0096] By optimizing the calculation of multi-hole paths and applying the shortest path principle, drilling efficiency is improved, ineffective spindle movement time is reduced, and the accumulation of repeated positioning errors is avoided. High-frequency micro-vibration-assisted drilling effectively reduces the drill bit's cutting resistance, and synchronous spraying achieves a one-step shaping process on the inner surface of the hole, reducing the number of steps.

[0097] S3. Implement the negative pressure chip extraction auxiliary strategy, set up a micro negative pressure chip extraction channel at the bottom of the hole, use negative pressure to suck the chips generated during the drilling process, and discharge the chips out of the processing area, including:

[0098] For oil-through holes deeper than 10mm, a micro-negative pressure chip extraction channel with a preset diameter of 2mm is used. The channel runs through the bottom of the hole and is connected to an external negative pressure pump. During drilling, when the drilling depth exceeds 5mm and a critical depth h is set, the system triggers the negative pressure device, forming a suction airflow downward along the hole axis to expel chips in real time, preventing blockage and heat accumulation. Compared with traditional methods, this negative pressure-assisted strategy improves chip extraction efficiency by 34%, reduces heat accumulation on the hole wall by approximately 8°C, and extends drill bit life by 15%.

[0099] Utilizing micro-negative pressure channels to extract chips in real time, this assistive strategy prevents problems such as chip removal difficulties, chip accumulation within the hole, and drill bit jamming during deep hole machining. This strategy effectively reduces cutting temperature and tool wear, ensuring clean hole formation and improving machining stability. It is suitable for high-quality batch machining of deep holes or small-diameter structures with difficult chip removal.

[0100] S4. Real-time monitoring of the drilling parameters during the drilling process, and judging whether the current drilling state is in a stable processing range based on the real-time drilling parameters, including:

[0101] During the drilling process, three sets of sensors monitor feed rate, drilling torque, and micro-vibration frequency in real time. A stable machining threshold is defined. If the system detects deviations from the current parameters, it immediately provides feedback to the control system to adjust the feed rate and micro-vibration frequency to maintain drilling stability. Fuzzy control logic is used to adjust the feed rate and micro-vibration frequency to match load changes, achieving dynamic closed-loop regulation. Test results show that this strategy increases machining stability to 96% and reduces the incidence of abnormal vibration by nearly 60%.

[0102] By monitoring drilling parameters in real time and intelligently determining stable intervals, the system adaptively adjusts key process parameters, effectively suppressing drilling fluctuations and anomalies and ensuring continuous machining consistency. The system possesses dynamic control capabilities, rapidly responding to changing operating conditions, improving machining accuracy, reducing defect rates, and enhancing the overall intelligence of the equipment.

[0103] S5. Based on the different hole diameters and curved surfaces, a local laser deburring strategy is implemented, using focused laser pulses to perform micro-thermal blasting to remove burrs locally within the hole, including:

[0104] A 1064nm nanosecond laser is used as the deburring light source. An automatic focusing head adjusts the focal length according to aperture changes, and burr locations are identified through endoscopic images. Laser energy is controlled to 0.5J with a pulse width of 100ns, and applied to the burr to achieve localized thermal blasting removal. After cleaning, a second scan is performed to verify residual material. If any residual material remains, a secondary deburring process is automatically performed. This process achieves a burr removal rate exceeding 98%, with no signs of thermal damage on the inner surface of the hole, and a 99% retention rate for the hole edge contour integrity.

[0105] Laser focused deburring solves the problem of conventional mechanical deburring, which is difficult to penetrate deep into the hole. It offers the advantages of non-contact, high precision, and minimal damage. Laser thermal blasting achieves rapid localized burr removal, improving the quality of hole edge formation and surface finish, significantly enhancing the cleanliness of high-precision small holes and adapting to complex internal cavity structures.

[0106] S6. After drilling is completed, the quality inspection data of the target hole is obtained, and the quality of the hole processing is judged to be up to standard based on the quality inspection data, including:

[0107] After hole machining is complete, a high-precision 3D measuring instrument is used to inspect the hole diameter, roundness, and wall roughness, and compares them to pre-set tolerances. If the test result is within the specified tolerances, the hole is recorded as qualified, and the system automatically moves to the next hole. If it is outside these tolerances, the hole is marked as defective and the defect type is identified. If the hole diameter is slightly undersized, fine-tuning is performed; if the coating is missing from the hole, re-spraying is initiated. This closed-loop quality control has increased the overall first-pass pass rate for hole drilling from 88% to 97%.

[0108] An automated inspection system evaluates hole machining quality across all parameters, enabling precise identification and classification of each hole. If defects are detected, intelligent compensatory processing or repairs are triggered, forming a closed-loop quality control process. This improves overall product consistency and yield, ensuring functional reliability.

[0109] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0110] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A method for optimizing the oil hole of an automobile clutch, characterized in that: include: S1. Establish a reference surface facing the machining surface, fix the clutch workpiece in the positioning fixture, and make the hole position consistent with the fixture reference surface; Obtain clutch workpiece required parameters, and set the drilling data of the drill bit according to the clutch workpiece required parameters; S2, locate the hole coordinates, set the multi-hole synchronous path and the optimal drilling sequence; Implement a high-frequency micro-vibration and spraying synchronization strategy, using high-frequency micro-vibration to drill holes and simultaneously spraying oleophobic nano-coating on the inner wall of the hole; S3, implement the negative pressure chip extraction auxiliary strategy, set up a micro negative pressure chip extraction channel at the bottom of the hole, use the negative pressure to suck the chips generated during the drilling process, and discharge the chips out of the processing area; S4. Real-time monitoring of drilling parameters during the drilling process, and judging whether the current drilling state is in a stable processing range based on the real-time drilling parameters; If it is judged to be in an unstable state, the adaptive adjustment strategy of the drilling parameters is executed to dynamically change the feed speed, micro-vibration frequency or spray flow rate; S5. Based on the different hole diameters and curved surfaces, a local laser deburring strategy is implemented, using focused laser pulses to perform micro-thermal blasting to remove burrs locally within the hole. S6. After drilling is completed, quality inspection data of the target hole is obtained; Determine whether the hole processing quality meets the standards based on the quality inspection data. If it meets the standards, proceed to the next hole processing process. If it does not meet the standards, mark the defective hole and perform reprocessing or coating repair operations; Complete the synchronous processing and inspection process of all holes in sequence.

2. The method for optimizing the oil hole of an automobile clutch according to claim 1, characterized in that: The establishment of the reference surface is oriented toward the machining surface, and the clutch workpiece is fixed in the positioning fixture so that the hole position is consistent with the fixture reference surface, including: Obtain the three-dimensional structure data, oil hole coordinate parameters and hole number distribution information of the clutch workpiece to be processed; According to the clutch workpiece geometry information and processing requirements, select the processing surface orientation as the reference plane; Fix the clutch workpiece in a dedicated positioning fixture, and place the machined surface of the clutch workpiece toward the reference surface; Ensure that the machining surface of the workpiece is consistent with the reference surface, and the hole position is aligned with the fixture reference surface; Obtaining clutch workpiece required parameters, wherein the clutch workpiece required parameters include workpiece material, aperture requirements, and coating characteristics; Select the corresponding drill type and specifications according to the material and hole diameter requirements of the workpiece; According to the clutch workpiece required parameters, the drilling data of the drill bit is set, and the drilling data includes drilling speed, feed rate, high-frequency micro-vibration frequency and spraying parameters; According to the drilling data of the drill bit and the required parameters of the clutch workpiece, the drilling process is started to complete the hole processing operation.

3. The method for optimizing the oil hole of an automobile clutch according to claim 1, characterized in that: The positioning of hole coordinates, setting of multi-hole synchronous paths and optimal drilling sequence include: Establish the local coordinate system of the clutch workpiece and calibrate the initial origin position; Locate the spatial coordinate information of all processed holes, including the hole position, hole axis direction, and hole depth; Set the set of all holes to be processed as P, which is denoted as P = {p1, p2, ..., p n }, p i =(x i ,y i , z i ), where p i =(x i ,y i , z i ) represents the coordinate position of the i-th hole, p n Indicates that there are n holes to be processed; Utilize the industrial control path optimization algorithm to perform path optimization calculations on all hole positions and generate the shortest processing path; Setting hole p i To hole p j The processing movement cost is Assume that all path sequences are π = {π1, π2, ..., π m }, the shortest processing path is Where k represents the kth hole in the path, Represents the distance from the kth hole to the k+1th hole.

4. The method for optimizing the oil hole of an automobile clutch according to claim 3, characterized in that: The method of executing the high-frequency micro-vibration and spraying synchronization strategy, using high-frequency micro-vibration to drill a hole and simultaneously spraying an oleophobic nano-coating on the inner wall of the hole, includes: Superimpose high-frequency axial micro-vibration during the drill bit feeding process; Set the micro-vibration feed signal superposition model z(t), z(t)=z0+A·sin(2πf v t), where z0 represents the normal drilling axial position, A represents the micro-vibration amplitude, and f v Indicates the micro-vibration frequency; The actual feed speed after superposition is v z (t), During the drill bit retraction phase, the spraying device is automatically activated, and multi-axis coordinated control is used to evenly spray the oleophobic nano-coating material on the inner wall surface of the hole. According to the hole surface characteristics, which include surface shape, surface curvature and hole size, the spraying particle size, pressure and spraying angle are controlled; After spraying, use natural airflow to dry.

5. The method for optimizing the oil hole of an automobile clutch according to claim 2, characterized in that: The negative pressure chip extraction auxiliary strategy is implemented, and a micro negative pressure chip extraction channel is set at the bottom of the hole to use negative pressure to suck the chips generated during the drilling process and discharge the chips out of the processing area, including: Obtain target hole position parameters, including hole diameter, hole depth, processing material, and drilling method required for processing; According to the target hole position parameters, at least one micro negative pressure chip extraction channel is preset at the bottom of the target hole, and the micro negative pressure chip extraction channel passes through the clutch workpiece and is connected to the external negative pressure; During the drilling process, the critical depth h of the hole is set; When the drill bit feeds to a hole depth exceeding the preset critical depth h, negative pressure chip extraction is triggered. Negative pressure airflow is applied to form an attraction field along the axial direction of the hole, which sucks out the chips generated during the drilling process and discharges the chips out of the processing area.

6. The method for optimizing the oil hole of an automobile clutch according to claim 2, characterized in that: The real-time monitoring of the real-time drilling parameters during the drilling process and judging whether the current drilling state is in a stable processing range according to the real-time drilling parameters include: Real-time monitoring of drilling parameters during the drilling process, including feed speed, micro-vibration frequency, spraying pressure and speed; According to the clutch workpiece requirement parameters and real-time drilling parameters, the stable machining interval threshold segment of each drilling parameter is set to [p1, p2]; Compare and analyze the real-time drilling parameters with the threshold segment [p1, p2]; If all real-time drilling parameters are within the threshold range [p1, p2], the current drilling state is stable; If any real-time drilling parameter is not within the threshold range [p1, p2], the current drilling state is unstable and the adaptive adjustment strategy of the drilling parameters is executed; Optimize and adjust according to different abnormal characteristics: Adjust the feed rate to match the current drilling load; Adjust the micro-vibration frequency and amplitude to suppress abnormal vibration and improve chip removal capacity; Adjust the spraying flow rate and pressure to improve the lubrication and cooling condition of the hole wall.

7. The method for optimizing the oil hole of an automobile clutch according to claim 1, characterized in that: The local laser deburring strategy is implemented based on the different hole diameters and curved surfaces of the hole, and a focused laser pulse is used to perform micro-thermal blasting to remove burrs locally in the hole, including: Obtain burr distribution data on the target hole surface; According to the different hole diameters and curved surfaces of the hole positions, set the laser processing strategy that matches the hole diameter and curved surface; According to the hole depth and burr location, set the laser focus distance to d1; According to the clutch workpiece material type and burr adhesion strength, the laser pulse energy is set to e1; Control the multi-axis laser head to enter the target position in the hole for scanning; Applying short-duration, high-energy-density laser pulses creates a localized micro-thermal explosion effect in the burr area, instantly melting the burr metal structure. After cleaning is completed, the deburred area in the hole is re-scanned. If burrs are detected, a second laser deburring is performed.

8. The method for optimizing the oil hole of an automobile clutch according to claim 1, characterized in that: The method of judging whether the hole processing quality meets the standards based on the quality inspection data, and if so, entering the next hole processing process, and if not, marking the defective hole and performing reprocessing or coating repair operations, includes: After the target hole drilling operation is completed, the hole processing completion signal is automatically issued and the hole quality assessment operation is performed; Obtaining quality inspection preparation parameters R, including inspection preparation parameter inspection method, hole position number, inspection tolerance standard and surface defect judgment rule; Set the target quality monitoring parameter R1 and calculate the quality parameter difference ΔR=R-R1; Set the quality parameter threshold to Compare the quality detection preparation parameter R with the quality parameter threshold ΔR; If all quality parameter differences ΔR are less than the quality parameter threshold It is recorded as a qualified hole; If any quality parameter difference ΔR is greater than the quality parameter threshold It is an unqualified hole and the hole coordinates are recorded; Perform corresponding compensation processing based on the vacancy coordinates and defect types of unqualified holes; If there is a slight hole diameter deviation or burrs remain, perform local hole repair and reprocessing; If the inner wall is damaged, the coating is missing or the shape is distorted, perform micro-repair of the inner wall or re-coating; After machining is completed, all holes are optimized.

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