A mechanical parts drilling control system and method

Abstract

The present invention relates to the field of mechanical processing technology, and in particular to a control system and method for drilling mechanical parts. The system comprises: a data acquisition module for acquiring the size and material information of the composite layer structure of the mechanical part; a drilling execution module connected to the data acquisition module for determining initial drilling parameters and a drilling processing path and executing the drilling operation; a monitoring module connected to the drilling execution module for monitoring the vibration frequency during the drilling process, as well as the hole wall roughness and aperture deviation rate after drilling; and a control module connected to the data acquisition module, the drilling execution module, and the monitoring module, respectively, for determining the drilling qualification based on the straightness of the hole when determining that the drilling is unqualified based on the hole wall characteristic coefficient, or determining the cause of the drilling failure based on the processing position corresponding to the abnormal state during the drilling process. The present invention improves the accuracy and flexibility of drilling.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, and in particular to a mechanical accessory drilling control system and method. Background Art

[0002] In the machinery manufacturing industry, drilling, as a fundamental and critical processing technology, is widely used in the production of various mechanical parts. However, as the manufacturing industry evolves toward high precision, high efficiency, and intelligent manufacturing, traditional manual or semi-automatic drilling methods are no longer able to meet the demands of modern production. Traditional drilling methods suffer from low machining accuracy, low efficiency, and high labor intensity, resulting in high production costs and unstable product quality. In addition, due to factors such as drill bit wear and reduced machine tool accuracy, key quality indicators such as straightness and perpendicularity during the drilling process are difficult to effectively control, further affecting the overall performance and reliability of mechanical parts.

[0003] Chinese patent application publication number: CN117600837A, discloses a drilling and tapping machine control method and system, which includes a workbench, a drill bit, a drive device, a water spray device, a mechanical sensor and a processor. The mechanical sensor is deployed at least on the drill bit, and the processor is used to: determine a first control instruction to control the drive device to drive the drill bit to drill and tap the workpiece to be processed, and a second control instruction to control the water spray device to spray water to cool the drill bit and / or the workpiece to be processed; determine a third control instruction to perform an emergency stop operation in response to mechanical sensing information obtained by the mechanical sensor meeting a preset abnormal condition; at least one first thread image obtained by the imaging device includes a thread image taken from at least one preset position and preset angle; based on the first thread image and its corresponding preset position and preset angle, evaluate the thread quality of the first thread image through a machine learning model; in response to the number of abnormal first thread images meeting the requirement, determine that the thread quality is abnormal.

[0004] However, the existing technology has the following problems: the traditional drilling system has poor adaptability to mechanical accessories with complex structures, resulting in rapid tool wear and unstable hole wall quality. Summary of the Invention

[0005] To this end, the present invention provides a mechanical accessory drilling control system and method to overcome the problems in the prior art of poor adaptability of drilling systems to mechanical accessories with composite layer structures, resulting in low drilling efficiency and unstable hole wall quality.

[0006] To achieve the above objectives, the present invention provides a mechanical accessory drilling control system, comprising:

[0007] A data acquisition module, which is used to obtain the size and material information of the composite layer structure of the mechanical component to determine the drilling position parameters, wherein the material information includes material type and material hardness;

[0008] a drilling execution module connected to the data acquisition module, configured to determine initial drilling parameters based on the hardness gradient of the mechanical component, determine a drilling processing path based on drilling position parameters, and execute the drilling operation, wherein the drilling parameters include drill speed and feed rate;

[0009] a monitoring module connected to the drilling execution module, configured to monitor the vibration frequency during the drilling process and record a drilling state with a vibration frequency greater than a first preset vibration frequency as an abnormal state, and to monitor the hole wall roughness and hole diameter deviation rate after drilling to obtain a hole wall characteristic coefficient;

[0010] A control module is respectively connected to the data acquisition module, the drilling execution module and the monitoring module, and is used to determine the eligibility of the drilling according to the hole wall characteristic coefficient. If the drilling is unqualified, the eligibility of the drilling is re-determined according to the straightness of the hole, or the reason for the unqualified drilling is determined according to the processing position corresponding to the abnormal state during the drilling process.

[0011] Furthermore, the control module determines the eligibility of the drilling according to the hole wall characteristic coefficient, wherein if the hole wall characteristic coefficient is less than a first preset hole wall characteristic threshold, the drilling is determined to be qualified, and all drilling processes are completed according to the current drilling parameters;

[0012] If the hole wall characteristic coefficient is greater than or equal to the first preset hole wall characteristic threshold and less than the second preset hole wall characteristic threshold, the drilling is judged to be unqualified, and the qualification of the drilling is re-judged based on the straightness of the hole;

[0013] If the hole wall feature coefficient is greater than or equal to the second preset hole wall feature threshold, the drilling is determined to be unqualified, and the reason for the unqualified drilling is determined according to the processing position corresponding to the abnormal state during the drilling process.

[0014] Furthermore, the hole wall characteristic coefficient is determined by the average hole wall roughness and the average hole diameter deviation rate.

[0015] Furthermore, the control module determines the eligibility of the drilling for a second time based on the straightness of the hole, wherein if the straightness is less than a preset straightness, the drilling is determined to be qualified for the second time, and all drilling processes are completed according to the current drilling parameters;

[0016] If the straightness is greater than or equal to the preset straightness, the drilling is determined to be unqualified for the second time, and an adjustment strategy is determined according to the drill wear rate.

[0017] Furthermore, the control module determines an adjustment strategy based on the drill bit wear rate, wherein if the drill bit wear rate is less than a preset wear rate, the adjustment strategy is determined to be recalibrating the perpendicularity between the drill bit and the surface to be drilled;

[0018] If the drill wear rate is greater than or equal to the preset wear rate, the adjustment strategy is determined to be to replace the drill bit, and the processing parameters are adjusted to the first preset processing parameters.

[0019] Furthermore, the control module determines the reason for the drilling failure based on the processing position corresponding to the abnormal state during the drilling process under the first preset condition, wherein if the processing position corresponding to the abnormal state is located at the junction of the composite layers, the reason for the drilling failure is determined to be an excessively large hardness gradient between the composite layers, and the drill bit speed for drilling the inner layer is reduced based on the difference between the vibration frequency and the first preset vibration frequency;

[0020] If the processing position corresponding to the abnormal state is within the single-layer interval, it is determined that the reason for the unqualified drilling is that the drilling speed is too fast, and the feed speed of the drill bit is reduced according to the difference between the vibration frequency and the first preset vibration frequency;

[0021] The first preset condition is that the vibration frequency is greater than or equal to a first preset vibration frequency and less than a second preset vibration frequency.

[0022] Furthermore, the drill bit rotation speed of the inner layer drilling is negatively correlated with the first vibration frequency difference, wherein the first vibration frequency difference is the difference between the vibration frequency and a preset vibration frequency.

[0023] Furthermore, several adjustment methods are provided for the feed speed of the drill bit, and each adjustment method has a different adjustment range for the feed speed.

[0024] Furthermore, the control module immediately stops drilling and issues an alarm under the condition that the vibration frequency is greater than or equal to a second preset vibration frequency.

[0025] The present invention also provides a mechanical accessory drilling control method, comprising:

[0026] Obtain the size and material information of the composite layer structure of mechanical parts and determine the drilling position parameters;

[0027] Determine initial drilling parameters and drilling processing path and execute drilling operation;

[0028] The qualification of the drilling is determined based on the hole wall characteristic coefficient. If the drilling fails, the qualification of the drilling is re-determined based on the straightness of the hole, or the cause of the drilling failure is determined based on the processing position corresponding to the abnormal state during the drilling process;

[0029] If the drilling is determined to be unqualified for the second time, an adjustment strategy is determined based on the drill wear rate, including recalibrating the perpendicularity between the drill and the surface to be drilled, or replacing the drill and adjusting the processing parameters to the first preset processing parameters.

[0030] Compared with the prior art, the beneficial effect of the present invention lies in that the present invention first obtains the size and material information of the composite layer structure of the mechanical accessories through the data acquisition module to determine the drilling position parameters, and then determines the initial drilling parameters and drilling processing path through the drilling execution module to perform the drilling operation, and then monitors the vibration frequency during the drilling process and the hole wall roughness and aperture deviation rate after drilling through the monitoring module, and finally determines the qualification of the drilling through the control module and adjusts the drilling parameters based on the unqualified conditions. The drilling control system is formed by the combination of the data acquisition module, the drilling execution module, the monitoring module and the control module, which realizes the precision and intelligence of the drilling processing of the composite layer structure mechanical accessories.

[0031] Furthermore, the present invention jointly determines the hole wall characteristic coefficient by the average roughness of the hole wall and the average deviation rate of the hole diameter, and determines the qualification of the drilling according to the hole wall characteristic coefficient. Based on the unqualified condition, the qualification of the drilling is secondary determined according to the straightness of the hole, or the reason for the unqualified drilling is determined according to the processing position corresponding to the abnormal state in the drilling process. Through the graded response mechanism, the precise control capability of the processing quality is improved.

[0032] Furthermore, when the second judgment is unqualified, the present invention determines an adjustment strategy based on the drill wear rate, including re-calibrating the verticality of the drill bit and the surface to be drilled, replacing the drill bit and adjusting the processing parameters to the first preset processing parameters. By determining different adjustment strategies, the dynamic response accuracy of the control system is improved.

[0033] Furthermore, the present invention determines the cause of unqualified drilling according to the processing position corresponding to the abnormal state during the drilling process and provides an adjustment plan, including reducing the drill bit speed for inner layer drilling and reducing the drill bit feed speed, thereby achieving precise processing control of the composite layer and improving the adaptability of the drilling control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the connection of the drilling control system module of a mechanical accessory according to an embodiment of the present invention;

[0035] Figure 2 This is a flow chart of determining the eligibility of a drill hole according to a hole wall characteristic coefficient according to an embodiment of the present invention;

[0036] Figure 3 This is a flow chart of an embodiment of the present invention for determining the cause of drilling failure according to the processing position corresponding to the abnormal state during the drilling process;

[0037] Figure 4 This is a flow chart of a method for controlling drilling holes in mechanical parts according to an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.

[0039] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0040] See also Figures 1 to 4 As shown, they are respectively a schematic diagram of the connection of the control system module for drilling of mechanical parts according to an embodiment of the present invention; a flow chart of determining the eligibility of drilling according to the hole wall characteristic coefficient according to an embodiment of the present invention; a flow chart of determining the cause of unqualified drilling according to the processing position corresponding to the abnormal state during the drilling process according to an embodiment of the present invention; and a flow chart of the drilling control method for mechanical parts according to an embodiment of the present invention.

[0041] The mechanical parts drilling control system according to the embodiment of the present invention includes:

[0042] A data acquisition module, which is used to obtain the size and material information of the composite layer structure of the mechanical component to determine the drilling position parameters, wherein the material information includes material type and material hardness;

[0043] a drilling execution module connected to the data acquisition module, configured to determine initial drilling parameters based on the hardness gradient of the mechanical component, determine a drilling processing path based on drilling position parameters, and execute the drilling operation, wherein the drilling parameters include drill speed and feed rate;

[0044] a monitoring module connected to the drilling execution module, configured to monitor the vibration frequency during the drilling process and record a drilling state with a vibration frequency greater than a first preset vibration frequency as an abnormal state, and to monitor the hole wall roughness and hole diameter deviation rate after drilling to obtain a hole wall characteristic coefficient;

[0045] A control module is respectively connected to the data acquisition module, the drilling execution module and the monitoring module, and is used to determine the eligibility of the drilling according to the hole wall characteristic coefficient. If the drilling is unqualified, the eligibility of the drilling is re-determined according to the straightness of the hole, or the reason for the unqualified drilling is determined according to the processing position corresponding to the abnormal state during the drilling process.

[0046] Specifically, the dimensional information of the composite layer structure of the mechanical component includes the overall outline of the mechanical component and the thickness of each layer, wherein the overall outline is obtained by a 3D line laser scanner, and the thickness of each layer is obtained by an infrared thermal imager.

[0047] Specifically, the composite layer structure of the mechanical parts in the embodiment of the present invention includes two layers, the hardness of the outer layer is lower than that of the inner layer, and the specific material is not limited.

[0048] Specifically, the initial drilling parameters include: the outer layer drill bit speed is 1200 rpm, the outer layer feed speed is 0.15 mm / rev, the inner layer drill bit speed is 720 rpm, and the inner layer feed speed is 0.08 mm / rev, but the above values ​​are not limited to this. Those skilled in the art can adjust the above values ​​according to actual needs.

[0049] Specifically, during the processing, the drilling control system linearly adjusts the outer layer drilling parameters to the inner layer drilling parameters from 0.3 mm away from the composite layer interface to the interface.

[0050] Specifically, the vibration frequency during the drilling process is monitored and obtained by a vibration frequency tester, the hole wall roughness after drilling is monitored and obtained by a hole wall roughness meter, and the aperture deviation rate is monitored and obtained by a three-dimensional laser scanner.

[0051] In the embodiment of the present invention, the first preset vibration frequency is set to 150 Hz, but the value is not limited thereto, and those skilled in the art may adjust the value according to actual needs.

[0052] Specifically, the control module determines the eligibility of the drilling according to the hole wall characteristic coefficient, wherein if the hole wall characteristic coefficient is less than a first preset hole wall characteristic threshold, the drilling is determined to be qualified, and all drilling processes are completed according to the current drilling parameters;

[0053] If the hole wall characteristic coefficient is greater than or equal to the first preset hole wall characteristic threshold and less than the second preset hole wall characteristic threshold, the drilling is judged to be unqualified, and the qualification of the drilling is re-judged based on the straightness of the hole;

[0054] If the hole wall feature coefficient is greater than or equal to the second preset hole wall feature threshold, the drilling is determined to be unqualified, and the reason for the unqualified drilling is determined according to the processing position corresponding to the abnormal state during the drilling process.

[0055] In an embodiment of the present invention, the first preset hole wall feature threshold is 0.8, and the second preset hole wall feature threshold is 0.92, but the above values ​​are not limited thereto. Those skilled in the art may adjust the above values ​​according to actual needs.

[0056] Specifically, the hole wall characteristic coefficient is determined by the average roughness of the hole wall and the average deviation rate of the hole diameter, and is calculated by the following formula: In the formula, is the hole wall characteristic coefficient, is the first weight coefficient, set is the average roughness of the hole wall, is the average roughness threshold of the hole wall, set is the second weight coefficient, set is the average deviation rate of aperture, is the aperture average deviation rate threshold, set .

[0057] Specifically, the control module determines the eligibility of the drilling according to the straightness of the hole for a second time, wherein if the straightness is less than a preset straightness, the drilling is determined to be qualified for the second time, and all drilling processes are completed according to the current drilling parameters;

[0058] If the straightness is greater than or equal to the preset straightness, the drilling is determined to be unqualified for the second time, and an adjustment strategy is determined according to the drill wear rate.

[0059] Specifically, the straightness of the hole is measured by three-dimensional coordinate measurement.

[0060] In the embodiment of the present invention, the preset straightness value is 0.05 mm / m, but the value is not limited thereto, and those skilled in the art can adjust the value according to actual needs.

[0061] Specifically, the control module determines an adjustment strategy based on the drill bit wear rate, wherein if the drill bit wear rate is less than a preset wear rate, the adjustment strategy is determined to be recalibrating the perpendicularity between the drill bit and the surface to be drilled;

[0062] If the drill wear rate is greater than or equal to the preset wear rate, the adjustment strategy is determined to be to replace the drill bit, and the processing parameters are adjusted to the first preset processing parameters.

[0063] Specifically, the drill bit wear rate is obtained by taking images of the drill bit before and after drilling with a camera and then calculating with image analysis software. In the embodiment of the present invention, the preset wear rate is 2%, but the value is not limited thereto. Those skilled in the art can adjust the value according to actual needs.

[0064] Specifically, the feed rate in the first preset processing parameter is 80% of the feed rate in the initial drilling parameter, and the drill speed remains unchanged.

[0065] Specifically, the control module determines the reason for the drilling failure based on the processing position corresponding to the abnormal state during the drilling process under the first preset condition, wherein if the processing position corresponding to the abnormal state is located at the junction of the composite layers, the reason for the drilling failure is determined to be an excessively large hardness gradient between the composite layers, and the drill bit speed for drilling the inner layer is reduced based on the difference between the vibration frequency and the first preset vibration frequency;

[0066] If the processing position corresponding to the abnormal state is within the single-layer interval, it is determined that the reason for the unqualified drilling is that the drilling speed is too fast, and the feed speed of the drill bit is reduced according to the difference between the vibration frequency and the first preset vibration frequency;

[0067] The first preset condition is that the vibration frequency is greater than or equal to a first preset vibration frequency and less than a second preset vibration frequency.

[0068] In the embodiment of the present invention, the second preset vibration frequency is set to 200 Hz, but the value is not limited thereto, and those skilled in the art may adjust the value according to actual needs.

[0069] Specifically, the machining position corresponding to the abnormal state is determined by combining the acquired vibration frequency with the position where the drill bit descends.

[0070] Specifically, the drill bit speed for inner layer drilling is negatively correlated with the first vibration frequency difference, wherein if the first vibration frequency difference is less than the first preset vibration frequency difference, the drill bit speed is reduced to the corresponding value using the first speed adjustment coefficient of 0.95;

[0071] If the first vibration frequency difference is greater than or equal to the first preset vibration frequency difference and less than the second preset vibration frequency difference, the drill speed is reduced to a corresponding value using a second speed adjustment coefficient of 0.92;

[0072] If the first vibration frequency difference is greater than or equal to the second preset vibration frequency difference, the drill speed is reduced to a corresponding value using a third speed adjustment coefficient of 0.88;

[0073] The first vibration frequency difference is the difference between the vibration frequency when the processing position corresponding to the abnormal state is located at the junction of the composite layers and the preset vibration frequency.

[0074] In the embodiment of the present invention, the first preset vibration frequency difference is 10 Hz, and the second preset vibration frequency difference is 30 Hz, but the above values ​​are not limited thereto. Those skilled in the art may adjust the above values ​​according to actual needs.

[0075] Specifically, several adjustment methods are provided for the feed speed of the drill bit, and each adjustment method has a different adjustment range for the feed speed. Among them, if the second vibration frequency difference is less than the third preset vibration frequency difference, the first speed adjustment coefficient of 0.98 is used to reduce the feed speed to the corresponding value;

[0076] If the second vibration frequency difference is greater than or equal to the third preset vibration frequency difference and less than the fourth preset vibration frequency difference, the feed speed is reduced to a corresponding value using a second speed adjustment coefficient of 0.96;

[0077] If the second vibration frequency difference is greater than or equal to the fourth preset vibration frequency difference, the feed speed is reduced to a corresponding value using a third speed adjustment coefficient of 0.93;

[0078] The second vibration frequency difference is the difference between the vibration frequency when the processing position corresponding to the abnormal state is within the single-layer interval and the preset vibration frequency.

[0079] In the embodiment of the present invention, the third preset vibration frequency difference is 12 Hz, and the fourth preset vibration frequency difference is 25 Hz, but the above values ​​are not limited thereto, and those skilled in the art may adjust the above values ​​according to actual needs.

[0080] Specifically, the control module immediately stops drilling and issues an alarm when the vibration frequency is greater than or equal to the second preset vibration frequency.

[0081] The drilling control method for a mechanical component according to an embodiment of the present invention includes:

[0082] Step S1, obtaining the size and material information of the composite layer structure of the mechanical component and determining the drilling position parameters;

[0083] Step S2, determining initial drilling parameters and drilling processing path and performing drilling operation;

[0084] Step S3, determining the eligibility of the drilled hole based on the hole wall characteristic coefficient. If the drilled hole is unqualified, the eligibility of the drilled hole is re-determined based on the straightness of the hole, or the cause of the unqualified drilled hole is determined based on the processing position corresponding to the abnormal state during the drilling process;

[0085] Step S4, if the drilling is determined to be unqualified for the second time, an adjustment strategy is determined according to the drill wear rate, including recalibrating the perpendicularity between the drill and the surface to be drilled, or replacing the drill and adjusting the processing parameters to the first preset processing parameters.

[0086] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

[0087] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A mechanical parts drilling control system, characterized in that: include: A data acquisition module, which is used to obtain the size and material information of the composite layer structure of the mechanical component to determine the drilling position parameters, wherein the material information includes material type and material hardness; a drilling execution module connected to the data acquisition module, configured to determine initial drilling parameters based on the hardness gradient of the mechanical component, determine a drilling processing path based on drilling position parameters, and execute the drilling operation, wherein the drilling parameters include drill speed and feed rate; a monitoring module connected to the drilling execution module, configured to monitor the vibration frequency during the drilling process and record a drilling state with a vibration frequency greater than a first preset vibration frequency as an abnormal state, and to monitor the hole wall roughness and hole diameter deviation rate after drilling to obtain a hole wall characteristic coefficient; A control module is respectively connected to the data acquisition module, the drilling execution module and the monitoring module, and is used to determine the eligibility of the drilling according to the hole wall characteristic coefficient. If the drilling is unqualified, the eligibility of the drilling is re-determined according to the straightness of the hole, or the reason for the unqualified drilling is determined according to the processing position corresponding to the abnormal state during the drilling process.

2. The mechanical accessory drilling control system according to claim 1, characterized in that: The control module determines the eligibility of the drilling according to the hole wall characteristic coefficient, wherein if the hole wall characteristic coefficient is less than a first preset hole wall characteristic threshold, the drilling is determined to be qualified, and all drilling processes are completed according to the current drilling parameters; If the hole wall characteristic coefficient is greater than or equal to the first preset hole wall characteristic threshold and less than the second preset hole wall characteristic threshold, the drilling is judged to be unqualified, and the qualification of the drilling is re-judged based on the straightness of the hole; If the hole wall feature coefficient is greater than or equal to the second preset hole wall feature threshold, the drilling is determined to be unqualified, and the reason for the unqualified drilling is determined according to the processing position corresponding to the abnormal state during the drilling process.

3. The mechanical accessory drilling control system according to claim 2, characterized in that: The hole wall characteristic coefficient is determined by the average hole wall roughness and the average hole diameter deviation rate.

4. The mechanical accessory drilling control system according to claim 2, characterized in that: The control module determines the eligibility of the drilling secondarily based on the straightness of the hole, wherein if the straightness is less than a preset straightness, the drilling is determined to be qualified and all drilling processes are completed according to the current drilling parameters; If the straightness is greater than or equal to the preset straightness, the drilling is determined to be unqualified for the second time, and an adjustment strategy is determined according to the drill wear rate.

5. The mechanical accessory drilling control system according to claim 4, characterized in that: The control module determines an adjustment strategy based on the drill bit wear rate, wherein if the drill bit wear rate is less than a preset wear rate, the adjustment strategy is determined to be recalibrating the perpendicularity between the drill bit and the surface to be drilled; If the drill wear rate is greater than or equal to the preset wear rate, the adjustment strategy is determined to be to replace the drill bit, and the processing parameters are adjusted to the first preset processing parameters.

6. The mechanical accessory drilling control system according to claim 2, characterized in that: The control module determines, under a first preset condition, a reason for unqualified drilling based on a processing position corresponding to an abnormal state during the drilling process, wherein, if the processing position corresponding to the abnormal state is located at a junction of composite layers, the reason for unqualified drilling is determined to be an excessively large hardness gradient between the composite layers, and reduces a drill bit speed for inner layer drilling based on a difference between the vibration frequency and the first preset vibration frequency; If the processing position corresponding to the abnormal state is within the single-layer interval, it is determined that the reason for the unqualified drilling is that the drilling speed is too fast, and the feed speed of the drill bit is reduced according to the difference between the vibration frequency and the first preset vibration frequency; The first preset condition is that the vibration frequency is greater than or equal to a first preset vibration frequency and less than a second preset vibration frequency.

7. The mechanical accessory drilling control system according to claim 6, characterized in that: The drill bit rotation speed for inner layer drilling is negatively correlated with the first vibration frequency difference, wherein the first vibration frequency difference is the difference between the vibration frequency and a preset vibration frequency.

8. The mechanical accessory drilling control system according to claim 6, characterized in that: There are several adjustment methods for the feed speed of the drill bit, and each adjustment method has a different adjustment range for the feed speed.

9. The mechanical accessory drilling control system according to claim 6, characterized in that: The control module immediately stops drilling and issues an alarm when the vibration frequency is greater than or equal to the second preset vibration frequency.

10. A mechanical accessory drilling control method, applied to the mechanical accessory drilling control system according to any one of claims 1 to 9, characterized in that: include: Obtain the size and material information of the composite layer structure of mechanical parts and determine the drilling position parameters; Determine initial drilling parameters and drilling processing path and execute drilling operation; The qualification of the drilling is determined based on the hole wall characteristic coefficient. If the drilling fails, the qualification of the drilling is re-determined based on the straightness of the hole, or the cause of the drilling failure is determined based on the processing position corresponding to the abnormal state during the drilling process; If the drilling is determined to be unqualified for the second time, an adjustment strategy is determined based on the drill wear rate, including recalibrating the perpendicularity between the drill and the surface to be drilled, or replacing the drill and adjusting the processing parameters to the first preset processing parameters.

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