Pressure self-adaptive regulation and control method for oil pressure driving honing head

Abstract

The invention discloses a pressure self-adaptive regulation and control method for an oil pressure driving honing head, and relates to the technical field of honing head pressure control evaluation, and the method comprises the steps: integrating multi-source sensor data, including honing head vibration amplitude, oil pressure system pressure fluctuation frequency and main shaft motor load current, and comprehensively calculating a honing state index; therefore, the processing state is accurately evaluated. The method has the technical effects that early-stage signs of abnormal machining can be automatically identified, for example, safety, early warning and abnormal states are distinguished through threshold interval division of honing state indexes, and corresponding pressure adjustment strategies are executed. The current pressure is maintained in the safe state, proportional regulation and control are carried out in the early warning state to slightly correct the pressure, and great adjustment or emergency shutdown measures are taken in the abnormal state, so that machining quality reduction or equipment damage caused by pressure inadaptation is effectively avoided. According to the method, continuous self-adaptive regulation and control in the machining process are achieved, the manual intervention requirement is reduced, the honing precision, the equipment reliability and the production efficiency are improved, meanwhile, the fault risk is reduced through the early warning and shutdown functions, and the method is suitable for high-requirement precision machining scenes. And monitoring and adjustment are executed circularly, so that the stability and consistency of the whole machining process are ensured.

Description

Technical Field

[0001] This application relates to the field of honing head pressure control technology, and in particular to a method for adaptive pressure control of a hydraulically driven honing head. Background Technology

[0002] In traditional honing processes, the control of the hydraulic drive system often relies on fixed parameter settings, lacking real-time response capabilities to dynamic changes in the machining process. This makes the honing head susceptible to vibration, pressure fluctuations, and load variations during operation, leading to problems such as unstable machining conditions, low efficiency, and quality defects. Specifically, existing technologies suffer from the following main technical problems: In the initial stage of honing, parameters may fluctuate abnormally, failing to quickly reach a stable state and increasing the risk of equipment failure; During machining, changes in dynamic parameters such as vibration amplitude, pressure fluctuation frequency, and load current cannot be comprehensively assessed, resulting in delayed hydraulic pressure adjustments and difficulty in preventing abnormal situations; When the machining state deviates from the safe range, traditional methods lack adaptive control mechanisms, easily leading to excessive wear, decreased machining accuracy, or emergency shutdowns, affecting production continuity and cost control. They also cannot perform fine-grained control based on real-time status indices, especially in warning and abnormal ranges, where pressure adjustments may be insufficient or excessive, failing to effectively maintain machining stability and hindering the improvement of honing efficiency and quality. Summary of the Invention

[0003] This application provides a pressure adaptive control method for a hydraulically driven honing head, which achieves dynamic optimization and stable control of the honing process by real-time monitoring and intelligent adjustment of processing parameters, including the following steps: S1: Real-time acquisition of dynamic parameters during the honing process, including the honing head vibration amplitude S, the real-time pressure fluctuation frequency F of the hydraulic drive system, and the real-time load current value I of the spindle motor. S2: Based on the dynamic parameters collected in step S1, calculate the honing state index H at the current processing moment. The calculation formula is as follows: H = α∗S+β∗F+γ∗I; Where α, β, and γ are weighting coefficients preset based on the processing materials and initial process; S3: Compare the calculated honing state index H with a preset threshold range to determine the threshold range to which the current honing state belongs. The threshold range includes at least a first safe range, a second warning range, and a third abnormal range. S4: Based on the threshold range determined in step S3, execute the oil pressure control strategy corresponding to the threshold range: When the honing state index H is within the first safe range, maintain the current oil pressure setting value P; When the honing state index H is in the second warning range, the current oil pressure setting value P is adjusted to P1, P1=P±ΔP1, where ΔP1 is the first pressure adjustment amount; When the honing state index H is in the third abnormal range, the current oil pressure setting value P is adjusted to P2, P2=P±ΔP2, where ΔP2 is the second pressure adjustment amount, and ΔP2>ΔP1; S5: Repeat steps S1 to S4 until the honing process is complete.

[0004] Further, in step S1, the vibration amplitude S of the honing head is obtained by measuring an acceleration sensor installed on the honing head base, the real-time pressure fluctuation frequency F is obtained by measuring a high-frequency pressure sensor installed in the hydraulic circuit, and the real-time load current value I of the spindle motor is obtained by measuring the current detection module of the motor driver or an external current transformer.

[0005] Furthermore, the first safe interval is defined as honing state index H≤30, the second warning interval is defined as 30<honing state index H≤70, and the third abnormal interval is defined as honing state index H>70.

[0006] Further, in step S4, when H is within the second warning range, the following steps are performed to determine the adjusted oil pressure setpoint P1 and the first pressure adjustment amount ΔP1: S41: Set the target value of the state index for the second early warning interval to H0, where 30 <H0≤70; S42: Calculate the deviation e between the current honing state index H and the target value H0, where e = H - H0; S43: Calculate the basic control amount ΔP_base based on the deviation e, ΔP_base=K e, where K is a preset scaling factor; S44: Limit the basic control amount ΔP_base to determine the actual first pressure adjustment amount ΔP1. Specifically, limiting the basic control amount ΔP_base includes: if |ΔP_base|≤ΔP_max, then ΔP1=ΔP_base; if |ΔP_base|>ΔP_max, then when ΔP_base>0, ΔP1=ΔP_max; when ΔP_base<0, ΔP1=-ΔP_max, where ΔP_max is the preset maximum single adjustment amount. S45: If e>0, then perform the voltage reduction operation of P1=P-|ΔP1|; if e<0, then perform the voltage increase operation of P1=P+|ΔP1|.

[0007] Furthermore, it also includes: within a first preset time T1 after the start of processing, continuously collecting dynamic parameters and calculating the honing state index H; if the value of the honing state index H is continuously within the first safe range and the fluctuation amplitude is less than the preset threshold within the time T1, it is determined that the processing has entered a stable stage; otherwise, an initial parameter abnormality alarm is issued.

[0008] Further, in step S2, the weighting coefficient γ is dynamically adjusted according to the cumulative change trend of the spindle motor load current. The adjustment rule is as follows: if the load current I shows a monotonically increasing trend within M consecutive sampling periods, then the weighting coefficient γ is updated to γ1, where γ1 = γ (1+δ), where δ is the gain coefficient set according to the process.

[0009] Furthermore, the method also includes: when the honing state index H is located in the third abnormal interval for N consecutive sampling periods, and after the control strategy of step S4 is applied, if the honing state index H does not recover to the second warning interval or below, the hydraulic drive system is controlled to perform an emergency shutdown and trigger an alarm.

[0010] The embodiments of this application have the following beneficial effects: By integrating multi-source sensor data, including the vibration amplitude of the honing head, the pressure fluctuation frequency of the hydraulic system, and the load current of the spindle motor, a honing state index is comprehensively calculated, thereby accurately assessing the processing status. The technical effect is reflected in the ability to automatically identify early signs of processing abnormalities. For example, by dividing the honing state index into threshold ranges, it distinguishes between safe, warning, and abnormal states and executes corresponding pressure adjustment strategies. In a safe state, the current pressure is maintained; in a warning state, proportional adjustment is performed to slightly correct the pressure; and in an abnormal state, significant adjustments or emergency shutdown measures are taken, effectively avoiding processing quality degradation or equipment damage caused by pressure mismatch. This method achieves continuous adaptive control of the processing process, reduces the need for manual intervention, improves honing accuracy, equipment reliability, and production efficiency, and reduces the risk of failure through warning and shutdown functions, making it suitable for high-requirement precision machining scenarios. Through cyclical monitoring and adjustment, the stability and consistency of the entire processing process are ensured. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 An exemplary flowchart illustrates a pressure adaptive control method for a hydraulically driven honing head provided in an embodiment of this application.

[0013] Figure 2 An exemplary illustration shows a schematic diagram of the hydraulic pressure control strategy implemented when the honing state index H is in the second warning range, as provided in an embodiment of this application. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0015] To further illustrate the technical solutions provided in the embodiments of this application, a detailed description is provided below in conjunction with the accompanying drawings and specific implementation methods. Although the embodiments of this application provide method operation steps as shown in the following embodiments or drawings, the method may include more or fewer operation steps based on conventional or non-inventive methods. In steps where there is no logically necessary causal relationship, the execution order of these steps is not limited to the execution order provided in the embodiments of this application.

[0016] Please refer to Figure 1 As shown, this application provides a method for adaptive pressure control of a hydraulically driven honing head, comprising the following steps: S1: Real-time acquisition of dynamic parameters during the honing process, including the vibration amplitude S of the honing head, the real-time pressure fluctuation frequency F of the hydraulic drive system, and the real-time load current value I of the spindle motor.

[0017] In step S1, the vibration amplitude S of the honing head is obtained by measuring the acceleration sensor installed on the honing head base, the real-time pressure fluctuation frequency F is obtained by measuring the high-frequency pressure sensor installed in the hydraulic circuit, and the real-time load current value I of the spindle motor is obtained by measuring the current detection module of the motor driver or the external current transformer.

[0018] Step S1 involves real-time acquisition of dynamic parameters during the honing process, including the honing head vibration amplitude S, the real-time pressure fluctuation frequency F of the hydraulic drive system, and the real-time load current I of the spindle motor. This aims to provide fundamental data support for subsequent adaptive pressure control. The vibration amplitude S directly reflects the stability of the honing head during processing, the pressure fluctuation frequency F reflects the dynamic characteristics of the hydraulic system, and the load current I indicates the real-time workload of the spindle motor.

[0019] By measuring the above parameters using an acceleration sensor mounted on the honing head base, a high-frequency pressure sensor in the hydraulic circuit, and a current detection module or external current transformer in the motor driver, the real-time and accuracy of data acquisition are ensured, thus laying a reliable input foundation for the entire control method.

[0020] Specifically, monitoring the vibration amplitude S helps identify abnormal vibrations of the honing head, preventing damage to the machined surface quality; collecting the pressure fluctuation frequency F can promptly capture instability in the hydraulic system, preventing sudden pressure changes from affecting the machining effect; and real-time acquisition of the load current I can provide early warning of the spindle motor overload risk, extending equipment life. By integrating these parameters, step S1 provides multi-dimensional data for the subsequent calculation of the honing state index H, enabling the control strategy to be dynamically adjusted based on the actual machining state.

[0021] Furthermore, within the first preset time T1 after processing begins, dynamic parameters are continuously collected and the honing state index H is calculated. If the value of the honing state index H remains within the first safe range and the fluctuation amplitude is less than the preset threshold within time T1, the processing is determined to have entered a stable stage. Otherwise, an initial parameter abnormality alarm is issued.

[0022] Real-time verification of the honing state is performed during the initial stage of processing to ensure a smooth start-up and avoid early anomalies. By continuously monitoring parameters such as vibration amplitude S, pressure fluctuation frequency F, and load current value I, and calculating the honing state index H based on weighted averages, this method can dynamically reflect the stability of the processing environment.

[0023] If the honing state index H remains within the first safe range and its fluctuation is less than the preset threshold within time T1, the processing is considered to have entered a stable stage. This indicates that the initial parameter settings are reasonable and the processing conditions are suitable for subsequent adjustments. Conversely, if the H value exceeds the safe range or fluctuates excessively, an initial parameter abnormality alarm will be issued, prompting operators to promptly check and adjust the processing parameters to identify equipment malfunctions or parameter imbalances early, preventing a decline in processing quality or equipment damage due to abnormal initial conditions.

[0024] S2: Based on the dynamic parameters collected in step S1, calculate the honing state index H at the current processing moment. The calculation formula is as follows: H = α∗S+β∗F+γ∗I; Where α, β, and γ are weighting coefficients preset based on the processing material and initial process. The weighting coefficient γ is dynamically adjusted according to the cumulative change trend of the spindle motor load current. The adjustment rule is: if the load current I shows a monotonically increasing trend within M consecutive sampling periods, then the weighting coefficient γ is updated to γ1, where γ1 = γ (1+δ), where δ is the gain coefficient set according to the process.

[0025] Step S2 calculates the honing state index H, integrating the multiple dynamic parameters collected in step S1 into a single quantitative index. This enables rapid assessment of the processing state and solves the problem of inaccurate state judgment caused by fluctuations in multiple parameters during honing. The formula is H = αS + βF + γ. In I, the weighting coefficients α, β, and γ are preset based on the processed material and the initial process, ensuring that the index H can reflect the key factors under different working conditions.

[0026] The weighting coefficient γ is dynamically adjusted according to the cumulative change trend of the spindle motor load current. The adjustment rule is: if the load current I shows a monotonically increasing trend within consecutive M sampling periods, then γ is updated to γ1 = γ (1 + δ), where δ is the gain coefficient.

[0027] The purpose of this dynamic adjustment is to enhance the sensitivity of the H-index to load changes and avoid response lags caused by fixed weights. When the load current continues to rise, increasing the weight of γ can make the H-index more prominent in reflecting the influence of load factors, thereby identifying potential overload or abnormalities in advance, enhancing the adaptive ability of the honing state index, and enabling the system to more accurately capture changes in the processing environment. By dynamically adjusting γ, the H-index can better match the actual processing trend, improving the quality consistency of honing processing and the reliability of the equipment.

[0028] S3: Compare the calculated honing state index H with a preset threshold interval to determine the threshold interval to which the current honing state belongs. The threshold interval at least includes a first safe interval, a second warning interval, and a third abnormal interval. The first safe interval is defined as the honing state index H ≤ 30, the second warning interval is defined as 30 < honing state index H ≤ 70, and the third abnormal interval is defined as the honing state index H > 70.

[0029] Step S3 determines the interval to which the current honing state belongs by comparing the calculated honing state index H with a preset threshold interval, including a first safe interval, a second warning interval, and a third abnormal interval. By dividing into multiple intervals, such as H ≤ 30 being the safe interval, 30 < H ≤ 70 being the warning interval, and H > 70 being the abnormal interval, hierarchical identification of the processing state is achieved, providing an accurate basis for subsequent oil pressure regulation. The interval division is based on the statistics of actual processing data and process experience, ensuring the rationality and applicability of state judgment.

[0030] To address the problem of large fluctuations in dynamic parameters during honing processing, through multi-level threshold comparison, subtle changes in the processing state can be captured in a timely manner. When the H-index is within the safe interval, it indicates stable processing and the current pressure can be maintained; when entering the warning interval, it indicates that potential risks may exist and minor adjustments are required; when entering the abnormal interval, it indicates serious problems and urgent intervention is required. This hierarchical mechanism improves the response speed and accuracy of the system, avoiding situations of over-regulation or under-regulation.

[0031] Step S3 achieves real-time monitoring and intelligent classification of the processing status by setting threshold ranges, which improves the adaptability and reliability of the honing system. This allows the hydraulic drive system to quickly switch control strategies according to the actual situation, reducing the risk of processing interruption and equipment damage. Through graded early warning and abnormal handling, the honing process is ensured to be carried out efficiently within a safe range, ultimately improving processing quality and consistency.

[0032] S4: Based on the threshold range determined in step S3, execute the oil pressure control strategy corresponding to the threshold range: When the honing condition index H is in the first safe range, maintain the current oil pressure setting value P.

[0033] Step S4 executes the corresponding hydraulic pressure control strategy according to the threshold range determined in step S3, thereby realizing the dynamic pressure adjustment of the honing process and solving the problem of untimely or inaccurate pressure control caused by state fluctuations in the honing process. By comparing the honing state index H with the preset range and adopting differentiated strategies for different ranges, it ensures that the hydraulic drive system can quickly respond to changes in the processing state.

[0034] When H is within the first safe range, the current hydraulic pressure setpoint P is maintained. This indicates that the processing state is stable and no intervention is required, thus avoiding disturbances caused by unnecessary adjustments. Its function is to maintain processing continuity under safe conditions, reduce frequent system operations, and lower energy consumption and equipment wear.

[0035] When H enters the second warning range, the oil pressure is adjusted to P1. P1 is determined by calculating the deviation e between the current H and the target value H0, and deriving the basic control amount based on the proportional coefficient K. The actual adjustment amount ΔP1 is then determined after amplitude limiting. This mechanism aims to preventively control potential risks during processing. Through deviation feedback and proportional control, it achieves fine-tuning of pressure and prevents the condition from deteriorating.

[0036] If H is in the third abnormal range, the oil pressure is adjusted to P2, and ΔP2 is greater than ΔP1. An emergency shutdown is triggered during continuous abnormalities. This can handle severe abnormalities and prevent degradation of processing quality or equipment damage. Overall, S4, through a graded control strategy, directly links processing status with pressure action, improving the system's adaptability.

[0037] By maintaining constant pressure within the safe range, unnecessary interventions were reduced; by adjusting the proportion of the warning range, a smooth transition was achieved; and by responding quickly to abnormal ranges, the risk of failure was reduced, and the efficiency and quality of honing were optimized.

[0038] When the honing condition index H is in the second warning range, the current oil pressure setting value P is adjusted to P1, P1=P±ΔP1, where ΔP1 is the first pressure adjustment amount.

[0039] Please refer to Figure 2 As shown, when the honing condition index H is in the second warning range, the following steps are performed to determine the adjusted oil pressure setpoint P1 and the first pressure adjustment amount ΔP1: S41: Set the target value of the state index for the second warning interval to H0, where 30 <H0≤70。

[0040] S42: Calculate the deviation e between the current honing state index H and the target value H0, where e = H - H0.

[0041] S43: Calculate the basic control quantity ΔP_base based on the deviation e, ΔP_base=K e, where K is a preset scaling factor.

[0042] S44: Limit the basic control amount ΔP_base to determine the actual first pressure adjustment amount ΔP1. Specifically, limiting the basic control amount ΔP_base includes: if |ΔP_base|≤ΔP_max, then ΔP1=ΔP_base. If |ΔP_base|>ΔP_max, then when ΔP_base>0, ΔP1=ΔP_max; when ΔP_base<0, ΔP1=-ΔP_max, where ΔP_max is the preset maximum single adjustment amount.

[0043] S45: If e > 0, then perform the voltage reduction operation P1 = P - |ΔP1|. If e < 0, then perform the voltage increase operation P1 = P + |ΔP1|.

[0044] When the honing condition index H is within the second warning range, an oil pressure control strategy is implemented, adjusting the current oil pressure setpoint P to P1, where P1 = P ± ΔP1, and ΔP1 is the first pressure adjustment amount. The technical purpose is to solve the problem of inaccurate pressure control or delayed response caused by condition fluctuations during honing. By handling the warning state in stages, preventative adjustments are achieved to avoid abnormal deterioration of the processing. Specific steps include setting the target value H0 of the condition index for the warning range, calculating the deviation e between the current H and H0, calculating the basic control amount based on the deviation using proportional control, performing amplitude limiting to determine the actual adjustment amount, and finally executing a pressure increase or decrease operation according to the direction of the deviation.

[0045] Step S41 sets the target value H0 to provide a benchmark reference for regulation, ensuring clear guidance for adjustment behavior. Step S42 calculates the deviation e, quantifying the difference between the current state and the ideal state, providing input data for subsequent regulation. Step S43 calculates the base regulation amount ΔP_base using the proportional coefficient K to achieve a linear response, making the pressure adjustment proportional to the deviation and improving the precision of regulation. Step S44 limits the base regulation amount, restricting the magnitude of single adjustments to prevent system disturbances caused by excessive actions and ensuring the smoothness of adjustment. Step S45 determines the direction of pressure increase or decrease based on the sign of the deviation, ensuring that the regulation strategy matches the actual state and avoiding misoperation. Through feedback control and the limiting mechanism, the accuracy and stability of oil pressure regulation are improved, reducing the risk of processing interruption.

[0046] When the honing state index H is within the second warning range, the technical purpose of setting the deviation e and the base control quantity ΔP_base is to solve the problem of imprecise pressure control or response delay caused by state fluctuations during the honing process. The deviation e, calculated as e = H - H0, quantifies the degree of deviation between the processing state and the ideal level, providing a clear input basis for subsequent control. This feature enables the system to identify the direction and magnitude of state changes in real time, avoiding the limitations of relying on a single threshold, thereby improving the targeting and accuracy of control.

[0047] The base control amount ΔP_base is calculated based on the deviation e and the proportional coefficient K, i.e., ΔP_base = K. The parameter e establishes a linear correlation between pressure adjustment and state deviation, providing a smooth control response and preventing sudden pressure changes from disrupting the processing. By converting the deviation into a specific control value, the system can dynamically adjust the oil pressure according to the actual state. For example, it can perform a pressure reduction operation when e > 0 and a pressure increase operation when e < 0, ensuring that the control strategy matches the processing requirements.

[0048] When the honing condition index H is in the third abnormal range, the current oil pressure setpoint P is adjusted to P2, where P2 = P ± ΔP2, and ΔP2 is the second pressure adjustment amount, and ΔP2 > ΔP1. The method further includes: when the honing condition index H is in the third abnormal range for N consecutive sampling periods, and after applying the control strategy in step S4, if the honing condition index H does not recover to the second warning range or below, the oil pressure drive system is controlled to perform an emergency shutdown and trigger an alarm.

[0049] When the honing condition index H is in the third abnormal range, the oil pressure control strategy is executed, and the current oil pressure setpoint P is adjusted to P2, where P2 = P ± ΔP2, ΔP2 is the second pressure adjustment amount, and ΔP2 is greater than the first pressure adjustment amount ΔP1 used in the warning range.

[0050] To address severe anomalies during processing, a larger adjustment range is applied to attempt to quickly correct fluctuations in dynamic parameters, preventing significant degradation in processing quality or equipment damage. Compared to the mild adjustments in the warning range, the ΔP2 in the anomaly range is designed with a larger amplitude to provide stronger intervention and counteract the cumulative effects of vibration, pressure fluctuations, or abnormal loads.

[0051] If H is in the third abnormal range for N consecutive sampling periods, and fails to recover to the second warning range or below after applying control strategies, the hydraulic drive system will execute an emergency shutdown and trigger an alarm. When control measures cannot effectively correct the abnormality, the processing process will be stopped in time to avoid the accident from escalating or the equipment from overloading. This achieves graded handling of abnormal states. First, a large pressure adjustment is attempted to restore stability. If this fails, an emergency shutdown is initiated. This ensures safety while maintaining processing continuity. Through the rapid response and shutdown mechanism in the abnormal range, processing interruption time is reduced and equipment life is extended.

[0052] S5: Repeat steps S1 to S4 until the honing process is complete.

[0053] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0054] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0055] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A pressure self-adaptive regulating method for oil pressure driven honing head, characterized in that, The method comprises the following steps: S1: collecting dynamic parameters in the honing process in real time, the dynamic parameters comprising a honing head vibration amplitude S, a real-time pressure fluctuation frequency F of an oil pressure driving system, and a real-time load current value I of a main shaft motor; S2: calculating a honing state index H at a current processing moment according to the dynamic parameters collected in step S1, the calculation formula being: ； wherein α, β, and γ are weighting coefficients preset according to a processing material and an initial process; S3: comparing the honing state index H calculated with preset threshold intervals to determine a threshold interval to which a current honing state belongs, the threshold intervals comprising at least a first safe interval, a second early warning interval, and a third abnormal interval; S4: executing an oil pressure regulation strategy corresponding to the threshold interval determined in step S3 according to the threshold interval: when the honing state index H is located in the first safe interval, maintaining a current oil pressure setting value P; when the honing state index H is located in the second early warning interval, adjusting the current oil pressure setting value P to P1, P1=P±ΔP1, wherein ΔP1 is a first pressure adjustment amount; when the honing state index H is located in the third abnormal interval, adjusting the current oil pressure setting value P to P2, P2=P±ΔP2, wherein ΔP2 is a second pressure adjustment amount, and ΔP2>ΔP1; S5: repeatedly executing steps S1 to S4 until the honing process is completed.

2. The pressure adaptive control method of an oil pressure driven honing head according to claim 1, characterized by, In step S1, the honing head vibration amplitude S is measured by an acceleration sensor arranged on a honing head base body, the real-time pressure fluctuation frequency F is measured by a high-frequency pressure sensor arranged in an oil pressure circuit, and the real-time load current value I of the main shaft motor is measured by a current detection module of a motor driver or an external current transformer.

3. The method of claim 1, wherein the pressure adaptive control is performed by a controller of the oil pressure driven honing head. The first safe interval is located at H≤30, the second early warning interval is defined as 30 4. The pressure adaptive control method of an oil pressure driven honing head according to claim 3, characterized by, In step S4, when H is located in the second early warning interval, the following steps are executed to determine the adjusted oil pressure setting value P1 and the first pressure adjustment amount ΔP1: S41: setting a state index target value of the second early warning interval as H0, wherein 30 S42: calculating a deviation e of the current honing state index H from the target value H0, wherein e=H-H0; S43: calculate a basic regulation amount ΔP_base based on the deviation e, ΔP_base = K e, wherein K is a preset proportional coefficient; S44: performing amplitude limiting processing on the base regulation amount ΔP_base to determine an actual first pressure adjustment amount ΔP1, wherein the amplitude limiting processing on the base regulation amount ΔP_base specifically comprises: if |ΔP_base|≤ΔP_max, then ΔP1=ΔP_base; if |ΔP_base|>ΔP_max, then when ΔP_base>0, ΔP1=ΔP_max, and when ΔP_base<0, ΔP1=-ΔP_max, wherein ΔP_max is a preset maximum single adjustment amount; S45: If e>0, a step-down operation of P1=P-|ΔP1| is performed; if e<0, a step-up operation of P1=P+|ΔP1| is performed.

5. The method of claim 1, wherein, Also included are: In a first preset time T1 after the start of processing, the dynamic parameters are continuously collected and the honing state index H is calculated. If the value of the honing state index H continuously locates in the first safety interval within the time T1 and the fluctuation amplitude is less than a preset threshold, it is determined that the processing enters a stable stage; otherwise, an initial parameter abnormality alarm is issued.

6. The method of claim 1, wherein, In step S2, the weighting coefficient γ is dynamically adjusted according to the cumulative change trend of the spindle motor load current, and the adjustment rule is: if the load current I shows a monotonic upward trend in the continuous M sampling periods, the weighting coefficient γ is updated to γ1, γ1=γ (1+δ), wherein δ is a gain coefficient set according to the process.

7. The method of claim 1, wherein, The method further includes: when the honing state index H continuously locates in the third abnormal interval for N sampling periods, and after the control strategy of step S4 is applied, the honing state index H does not recover to the second warning interval or below, the oil pressure driving system is controlled to perform emergency stop and trigger an alarm.

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