Automatic control system for processing inner surface of scissor handle

Abstract

The invention discloses an automatic control system for inner surface machining of a scissor handle, relates to the technical field of scissor handle machining, and solves the technical problems that in the prior art, analysis cannot be carried out when different machining procedure types are operated in a matched mode, and the execution difficulty of the machining procedure cannot be reduced to the maximum extent. Feeding monitoring is conducted on the scissor handle inner surface machining process, and in the scissor handle inner surface machining stage, a feeding monitoring result is deduced according to data analysis; the tool execution monitoring unit performs execution monitoring on the tool walking track, and when the tool walks at the current machining position, whether execution monitoring is qualified or not is deduced according to information comparison; the path analyzing and planning unit is used for carrying out processing procedure analysis on the inner surface processing process and carrying out path analyzing and planning according to parameter analysis; and the machining precision detection unit is used for performing real-time precision detection on inner surface machining.

Description

Technical Field

[0001] The invention relates to the technical field of scissor grip processing, in particular to an automatic control system for processing the inner surface of a scissor grip. Background Art

[0002] "Scissor handshake" usually refers to the opening and closing linkage structure of the handle (handshake part) in the scissors structure after the two blades are connected by a pivot pin; this structure is the core of the scissors to achieve the shearing function, and its design and processing accuracy directly affect the scissors' feel, durability and cutting effect; the automatic control system for the inner surface processing of the scissors handshake is the core technology for achieving precision processing. By integrating sensors, CNC technology, robot actuators and intelligent algorithms, it can significantly improve processing accuracy, efficiency and stability.

[0003] However, in the existing technology, it is impossible to monitor the movement of the tool during the processing of the inner surface of the scissors handshake, nor is it possible to perform detection on the tool movement trajectory, and it is impossible to ensure that the tool operation state is in the optimal state, which reduces the processing efficiency and increases the risk of tool wear. In addition, it is impossible to analyze the coordinated operation of different processing process types, and it is impossible to minimize the difficulty of executing the processing process.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the above-mentioned problems and to provide an automatic control system for processing the inner surface of a scissors grip.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A scissors handshake inner surface processing automatic control system includes an automatic control platform, wherein the automatic control platform is communicatively connected to a tool travel monitoring unit, a tool execution monitoring unit, a path analysis and planning unit, and a processing accuracy detection unit;

[0008] The tool movement monitoring unit monitors the tool movement during the machining process of the inner surface of the scissor handgrip. During the machining phase of the inner surface of the scissor handgrip, it collects real-time machining impact data and data on potential processing hazards, and infers the tool movement monitoring results based on data analysis.

[0009] The tool execution monitoring unit monitors the tool movement trajectory. When the tool moves at the current processing position, it collects execution compensation information and deformation impact information, and infers whether the execution monitoring is qualified based on information comparison;

[0010] The path analysis and planning unit analyzes the inner surface machining process, divides the inner surface machining process into spiral cutting and cycloidal cutting, collects the influencing parameters of spiral machining and cycloidal machining, and performs path analysis and planning based on the parameter analysis;

[0011] The processing accuracy detection unit performs real-time accuracy detection on inner surface processing.

[0012] As a preferred embodiment of the present invention, the real-time processing impact data and the hidden danger data to be processed are respectively the numerical ratios of the processing debris backlog and the debris removal amount at each processing position, and the overlapping area between the accumulation position of the debris removal amount and the current tool movement trajectory position is obtained.

[0013] As a preferred embodiment of the present invention, if the real-time processing impact data exceeds the debris amount ratio threshold, or the hidden danger data to be processed exceeds the overlapping area threshold, a tool movement control signal is generated and sent to the automatic control platform; if the real-time processing impact data does not exceed the debris amount ratio threshold, and the hidden danger data to be processed does not exceed the overlapping area threshold, a tool movement normal signal is generated and sent to the automatic control platform.

[0014] As a preferred embodiment of the present invention, the execution compensation information and the deformation influence information are respectively the trajectory spacing that needs to be compensated when the tool cutting force cuts the material at the current position according to the preset walking trajectory, and the real-time deformation of the tool cutting edge during the tool walking trajectory execution stage.

[0015] As a preferred embodiment of the present invention, if the execution compensation information exceeds the track spacing threshold, or the deformation impact information exceeds the blade shape variable threshold, a tool abnormality signal is generated and sent to the automatic control platform; if the execution compensation information does not exceed the track spacing threshold, and the deformation impact information does not exceed the blade shape variable threshold, a tool normal signal is generated and sent to the automatic control platform.

[0016] As a preferred embodiment of the present invention, spiral cutting refers to the tool performing spiral cutting with any point at the processing position as the center, and cycloidal cutting refers to the tool performing horizontal and vertical cutting with any edge line at the processing position as the standard; when different types of processes are processed in conjunction with each other during the inner surface processing stage, the preset spiral opening and the actual spiral opening at the execution position of the spiral cutting process are obtained, where the spiral opening is represented by the maximum aperture of the workpiece surface before the spiral cutting process is executed;

[0017] If the preset spiral opening is higher than the actual spiral opening, it is marked as shallow deviation processing; conversely, if the preset spiral opening is lower than the actual spiral opening, it is marked as opening deviation processing.

[0018] As a preferred embodiment of the present invention, the spiral processing influencing parameters and the cycloid processing influencing parameters are respectively the surface defect area of ​​the real-time cutting position of the adjacent cycloid cutting process after the opening deviation processing, and the horizontality deviation of the execution position of the corresponding adjacent spiral cutting process before and after the cycloid cutting process is executed.

[0019] As a preferred embodiment of the present invention, if the spiral processing influencing parameter exceeds the shape defect area threshold, or the cycloid processing influencing parameter exceeds the horizontality deviation threshold, a process impact signal is generated and sent to the automatic control platform; if the spiral processing influencing parameter does not exceed the shape defect area threshold, and the cycloid processing influencing parameter does not exceed the horizontality deviation threshold, a process normal signal is generated and sent to the automatic control platform; after the automatic control platform receives it, it cooperates with the processing execution in the current process sequence.

[0020] As a preferred embodiment of the present invention, the process of the machining accuracy detection unit is as follows:

[0021] After cutting compensation is performed at each position of the tool travel trajectory during inner surface machining, the frequency of assembly deviation at the machining position is obtained. At the same time, the continuous occurrence frequency of the cutting size deviation position when the assembly deviation occurs is obtained. These frequencies are then compared with the deviation generation frequency threshold and the deviation continuous occurrence frequency threshold respectively:

[0022] If the frequency of assembly deviation in the processing position exceeds the deviation frequency threshold, or the continuous frequency of occurrence of the cutting size deviation position exceeds the deviation continuous frequency threshold, a compensation deviation signal is generated and sent to the automatic control platform; if the frequency of assembly deviation in the processing position does not exceed the deviation frequency threshold, and the continuous frequency of occurrence of the cutting size deviation position does not exceed the deviation continuous frequency threshold, a normal accuracy signal is generated and sent to the automatic control platform.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. In the present invention, based on the tool movement monitoring, it is inferred whether there is an impact on the current inner surface processing, and whether the impact of residues such as wood chips generated during the tool movement will continue to increase with the increase of tool movement time, so as to improve the detection accuracy of tool processing, avoid the tool movement causing a decrease in inner surface processing efficiency, and affect the tool processing environment, thereby adversely affecting the tool wear and the quality of the processed surface; based on the monitoring and analysis performed in the tool movement trajectory, it is inferred whether the real-time tool usage status is normal when the tool is performing the current inner surface processing, so as to avoid the cutting force being unsuitable for the material of the current processing surface, causing the tool to be overloaded and unable to complete the actual processing of the inner surface, and also increase the risk of tool damage.

[0025] 2. In the present invention, the inner surface machining process is analyzed, and targeted analysis is performed according to different machining process types to carry out cutting path planning to ensure that there is no deviation in the process processing, so that the cutting process will produce changes in the workpiece and affect the execution of adjacent processes; through path analysis and planning, the inner surface machining efficiency is improved while the impact of machining is reduced, thereby minimizing the difficulty of executing the machining process; real-time precision detection is performed on the inner surface machining, and precision control is performed according to the precision detection results, so as to facilitate timely adjustment of the tool execution trajectory, improve the inner surface machining efficiency, and avoid continuous cutting deviations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a system principle block diagram of the present invention;

[0028] Figure 2 Flowchart of the method of the system of the present invention. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] See also Figure 1 As shown, a scissors handshake inner surface processing automatic control system includes an automatic control platform, wherein the automatic control platform is communicatively connected to a tool travel monitoring unit, a tool execution monitoring unit, a path analysis and planning unit, and a processing accuracy detection unit; it needs to be explained that, Figure 2 It is a flow chart of the control method of the automatic control system; Figure 1 and Figure 2 Combined with further disclosure of automatic control systems;

[0032] The tool movement monitoring unit is used to monitor the tool movement during the inner surface machining process of the scissors handgrip. Based on the tool movement monitoring, it is inferred whether there is any impact on the current inner surface machining, and whether the wood chips and other residues generated during the tool movement will continue to increase with the increase of tool movement time. This improves the detection accuracy of tool machining and avoids the decrease in inner surface machining efficiency caused by tool movement, and the impact on the tool machining environment, which has an adverse effect on tool wear and the quality of the machined surface.

[0033] During the inner surface processing stage of the scissors handshake, the numerical ratio of the amount of accumulated chips to the amount of chip removal at each processing position is obtained, and the overlapping area between the accumulation position of the chip removal amount and the current position of the tool to be moved is obtained. The numerical ratio of the amount of accumulated chips to the amount of chip removal at each processing position and the overlapping area between the accumulation position of the chip removal amount and the current position of the tool to be moved are marked as real-time processing impact data and potential processing risk data, respectively, and compared with the chip amount ratio threshold and the overlapping area threshold, respectively:

[0034] If the numerical ratio of the amount of accumulated processing debris to the amount of removed debris at each processing position exceeds the threshold value of the debris ratio, or the overlapping area between the accumulation position of the amount of removed debris and the current position of the tool to be moved exceeds the threshold value of the overlapping area, it is inferred that there is a risk in the tool movement monitoring of the inner surface processing of the scissor handshake, and a tool movement control signal is generated and sent to the automatic control platform. After receiving the tool movement control signal, the automatic control platform controls the tool movement, that is, controls the amount of accumulated debris and reduces the amount of accumulated debris according to the inertial potential energy brought by the tool movement speed. When the amount of accumulated debris shows a trend of accumulation, auxiliary cleaning is performed and the auxiliary cleaning cycle is set according to the actual processing progress. When the tool is moving, it is ensured that the position of the chip cleaning does not overlap with the position of the subsequent trajectory to be executed, so as to avoid deviation in the tool movement.

[0035] If the numerical ratio of the accumulated amount of machining debris to the amount of debris removed at each machining position does not exceed the threshold value of the debris ratio, and the overlapping area between the accumulation position of the debris removed amount and the current position of the tool to be moved does not exceed the threshold value of the overlapping area, it is inferred that there is no risk in the tool movement monitoring of the inner surface machining of the scissors handshake, and a normal tool movement signal is generated and sent to the automatic control platform;

[0036] After the tool movement monitoring is completed, the tool execution monitoring unit will monitor the tool movement trajectory. Based on the tool movement trajectory monitoring analysis, it can be inferred whether the tool is in normal use in real time when the tool is currently machining the inner surface. This will avoid the cutting force not being suitable for the material of the current machining surface, causing the tool to be overloaded and unable to complete the actual inner surface machining, which will also increase the risk of tool damage, such as chipping.

[0037] When the tool moves at the current processing position, the tool cutting force is obtained. The track spacing that needs to be compensated when the tool executes the preset walking trajectory when cutting the material at the current position is obtained. At the same time, the real-time deformation of the tool cutting edge during the tool walking trajectory execution stage is obtained, where the deformation is expressed as the defect area or deformation angle of the blade;

[0038] The tool cutting force is then compared with the trajectory spacing threshold and the blade deformation threshold respectively.

[0039] If the tool cutting force cuts the material at the current position and the track spacing that needs to be compensated when the tool executes the preset walking trajectory exceeds the track spacing threshold, or the real-time deformation of the tool cutting edge during the tool walking trajectory execution stage exceeds the blade deformation threshold, it is inferred that the tool walking trajectory execution monitoring is abnormal, and a tool abnormality signal is generated and sent to the automatic control platform. After receiving the signal, the automatic control platform replaces the specifications of the executing tool at the current processing position and continuously monitors the tool walking trajectory. In case of abnormality, the processing is suspended and the executing tool is cooled and the noise is reduced.

[0040] If the tool cutting force cuts the material at the current position, and the track spacing that needs to be compensated when the tool executes the preset walking trajectory does not exceed the track spacing threshold, and the real-time deformation of the tool cutting edge during the tool walking trajectory execution stage does not exceed the blade deformation threshold, then it is inferred that the tool execution walking trajectory execution monitoring is normal, and a tool normal signal is generated and sent to the automatic control platform;

[0041] After completing the tool specification setting and cutting impact analysis, the path analysis and planning unit conducts a machining process analysis of the inner surface machining process. Targeted analysis is performed based on different machining process types to plan the cutting path, ensuring that there are no deviations in the machining process that would cause workpiece changes and affect the execution of adjacent processes. Through path analysis and planning, the efficiency of inner surface machining is improved while the impact of machining is reduced, minimizing the difficulty of executing the machining process.

[0042] The inner surface machining process is divided into spiral cutting and cycloidal cutting, wherein spiral cutting means that the tool performs spiral cutting with any point of the machining position as the center, and cycloidal cutting means that the tool performs horizontal and vertical cutting with any edge of the machining position as the standard;

[0043] When different types of processes are processed together in the inner surface processing stage, the preset spiral opening and the actual spiral opening at the execution position of the spiral cutting process are obtained, where the spiral opening is represented by the maximum hole diameter on the workpiece surface before the spiral cutting process is executed; and the preset spiral opening and the actual spiral opening are compared. If the preset spiral opening is higher than the actual spiral opening, it is marked as shallow deviation processing; conversely, if the preset spiral opening is lower than the actual spiral opening, it is marked as opening deviation processing;

[0044] The shape defect area of ​​the surface of the real-time cutting position of the adjacent cycloidal cutting process after the opening deviation processing is obtained, and the horizontality deviation of the execution position of the corresponding adjacent spiral cutting process before and after the cycloidal cutting process is obtained. The shape defect area of ​​the surface of the real-time cutting position of the adjacent cycloidal cutting process after the opening deviation processing and the horizontality deviation of the execution position of the corresponding adjacent spiral cutting process before and after the cycloidal cutting process are marked as the spiral processing influencing parameter and the cycloidal processing influencing parameter, respectively, and compared with the shape defect area threshold and the horizontality deviation threshold, respectively:

[0045] If the surface defect area of ​​the real-time cutting position of the adjacent cycloidal cutting process after the opening deviation processing exceeds the defect area threshold, or the horizontality deviation of the execution position of the corresponding adjacent spiral cutting process before and after the cycloidal cutting process is executed exceeds the horizontality deviation threshold, it is inferred that there is a process processing influence in the coordinated processing stage of different types of processes, and a process influence signal is generated and sent to the automatic control platform. After receiving it, the automatic control platform determines whether there is a conflict between the corresponding cutting positions of the coordinated processing processes. If there is no conflict, the process position is replaced. However, if there is a conflict, the tool required for the process execution is replaced with a higher precision specification for the process execution;

[0046] If the surface defect area of ​​the real-time cutting position of the adjacent cycloidal cutting process after the opening deviation processing does not exceed the defect area threshold, and the horizontality deviation of the execution position of the corresponding adjacent spiral cutting process before and after the cycloidal cutting process is executed does not exceed the horizontality deviation threshold, it is inferred that there is no process processing influence in the coordinated processing stage of different types of processes, and a normal process signal is generated and sent to the automatic control platform; after receiving it, the automatic control platform performs coordinated processing in the current process sequence;

[0047] After completing the path analysis and planning, the machining accuracy detection unit performs real-time accuracy detection on the inner surface machining and performs precision control based on the accuracy detection results, facilitating timely adjustment of the tool execution trajectory, improving the inner surface machining efficiency and avoiding continuous cutting deviations.

[0048] After cutting compensation is performed at each position of the tool travel trajectory during inner surface machining, the frequency of assembly deviation at the machining position is obtained. At the same time, the continuous occurrence frequency of the cutting size deviation position when the assembly deviation occurs is obtained. The frequency of assembly deviation at the machining position and the continuous occurrence frequency of the cutting size deviation position are compared with the deviation generation frequency threshold and the deviation continuous occurrence frequency threshold, respectively:

[0049] If the frequency of assembly deviation at the processing position exceeds the deviation frequency threshold, or the continuous occurrence frequency of the cutting size deviation position exceeds the deviation continuous occurrence frequency threshold, it is inferred that the processing accuracy detection of the inner surface processing position is abnormal, and a compensation deviation signal is generated and sent to the automatic control platform. After receiving the signal, the automatic control platform adjusts the compensation deviation of the inner surface processing tool, and re-plans the specifications and trajectory of the inner surface processing tool to reduce the compensation frequency of the tool processing;

[0050] If the frequency of assembly deviation at the processing position does not exceed the deviation frequency threshold, and the continuous occurrence frequency of the cutting size deviation position does not exceed the deviation continuous occurrence frequency threshold, it is inferred that the processing accuracy detection of the inner surface processing position is normal, and a normal accuracy signal is generated and sent to the automatic control platform.

[0051] When the present invention is in use, the tool movement monitoring unit monitors the tool movement during the inner surface processing process of the scissors handshake, collects real-time processing impact data and hidden danger data to be processed during the inner surface processing stage of the scissors handshake, and infers the tool movement monitoring result based on the data analysis; the tool execution monitoring unit performs execution monitoring on the tool movement trajectory, collects execution compensation information and deformation impact information when the tool moves at the current processing position, and infers whether the execution monitoring is qualified based on information comparison; the path analysis planning unit performs processing procedure analysis on the inner surface processing process, divides the inner surface processing procedure into spiral cutting and cycloid cutting, collects spiral processing impact parameters and cycloid processing impact parameters, and performs path analysis planning based on parameter analysis; the processing accuracy detection unit performs real-time accuracy detection on the inner surface processing.

[0052] Thresholds, preset values, and preset ranges are set for comparative analysis of results to determine whether they are good or bad. The values ​​are set based on a combination of large-scale model analysis of sample data and manual experience, and can also be adjusted appropriately based on seasonal or common-sense factors.

[0053] The settings of weight ratio coefficients, influencing factors, etc. are assigned specific values ​​according to the influence of each parameter on the result, which ultimately reflects the impact on the result. They are also set and entered into storage through a combination of large-scale model analysis of sample data and manual experience. Appropriate adjustments can also be made based on seasonal or common-sense influencing conditions.

[0054] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic control system for processing the inner surface of a scissors grip, characterized in that: It includes an automatic control platform, wherein the automatic control platform is communicatively connected to a tool movement monitoring unit, a tool execution monitoring unit, a path analysis and planning unit, and a processing accuracy detection unit; The tool movement monitoring unit monitors the tool movement during the machining process of the inner surface of the scissor handgrip. During the machining phase of the inner surface of the scissor handgrip, it collects real-time machining impact data and data on potential processing hazards, and infers the tool movement monitoring results based on data analysis. The tool execution monitoring unit monitors the tool movement trajectory. When the tool moves at the current processing position, it collects execution compensation information and deformation impact information, and infers whether the execution monitoring is qualified based on information comparison; The path analysis and planning unit analyzes the inner surface machining process, divides the inner surface machining process into spiral cutting and cycloidal cutting, collects the influencing parameters of spiral machining and cycloidal machining, and performs path analysis and planning based on the parameter analysis; The processing accuracy detection unit performs real-time accuracy detection on inner surface processing.

2. The automatic control system for processing the inner surface of a scissors grip according to claim 1 is characterized in that: The real-time processing impact data and the potential processing risk data are the numerical ratios of the processing debris accumulation and the debris removal at each processing position, and the overlapping area between the accumulation position of the debris removal and the current tool travel trajectory position is obtained.

3. The automatic control system for processing the inner surface of a scissors grip according to claim 2, characterized in that: If the real-time processing impact data exceeds the debris volume ratio threshold, or the hidden danger data to be processed exceeds the overlapping area threshold, a tool movement control signal is generated and sent to the automatic control platform; if the real-time processing impact data does not exceed the debris volume ratio threshold, and the hidden danger data to be processed does not exceed the overlapping area threshold, a tool movement normal signal is generated and sent to the automatic control platform.

4. The automatic control system for processing the inner surface of a scissors grip according to claim 1 is characterized in that: The execution compensation information and deformation influence information are respectively the trajectory spacing that needs to be compensated when the tool cuts the material at the current position according to the preset walking trajectory, and the real-time deformation of the tool cutting edge during the tool walking trajectory execution stage.

5. The automatic control system for processing the inner surface of a scissors grip according to claim 4 is characterized in that: If the execution compensation information exceeds the track spacing threshold, or the deformation impact information exceeds the blade shape variable threshold, a tool abnormality signal is generated and sent to the automatic control platform; if the execution compensation information does not exceed the track spacing threshold, and the deformation impact information does not exceed the blade shape variable threshold, a tool normal signal is generated and sent to the automatic control platform.

6. The automatic control system for processing the inner surface of a scissors grip according to claim 1, characterized in that: Spiral cutting refers to the tool performing spiral cutting with any point at the processing position as the center, and cycloidal cutting refers to the tool performing horizontal and vertical cutting with any edge line at the processing position as the standard. When different types of processes are processed together during the internal surface processing stage, the preset spiral opening and actual spiral opening of the spiral cutting process execution position are obtained, where the spiral opening is represented by the maximum hole diameter on the workpiece surface before the spiral cutting process is executed. If the preset spiral opening is higher than the actual spiral opening, it is marked as shallow deviation processing; conversely, if the preset spiral opening is lower than the actual spiral opening, it is marked as opening deviation processing.

7. The automatic control system for processing the inner surface of a scissors grip according to claim 6, characterized in that: The influencing parameters of spiral machining and cycloid machining are the surface defect area of ​​the real-time cutting position of the adjacent cycloid cutting process after the opening deviation machining and the horizontality deviation of the execution position of the adjacent spiral cutting process before and after the cycloid cutting process.

8. The automatic control system for processing the inner surface of a scissors grip according to claim 7, characterized in that: If the spiral machining influencing parameter exceeds the shape defect area threshold, or the cycloid machining influencing parameter exceeds the horizontality deviation threshold, a process impact signal is generated and sent to the automatic control platform; if the spiral machining influencing parameter does not exceed the shape defect area threshold, and the cycloid machining influencing parameter does not exceed the horizontality deviation threshold, a process normal signal is generated and sent to the automatic control platform; after receiving it, the automatic control platform performs coordinated processing in the current process sequence.

9. The automatic control system for processing the inner surface of a scissors grip according to claim 1, characterized in that: The process of the machining accuracy detection unit is as follows: After cutting compensation is performed at each position of the tool travel trajectory during inner surface machining, the frequency of assembly deviation at the machining position is obtained. At the same time, the continuous occurrence frequency of the cutting size deviation position when the assembly deviation occurs is obtained. These frequencies are then compared with the deviation generation frequency threshold and the deviation continuous occurrence frequency threshold respectively: If the frequency of assembly deviation at the machining position exceeds the deviation frequency threshold, or the continuous occurrence frequency of the cutting size deviation position exceeds the deviation continuous occurrence frequency threshold, a compensation deviation signal is generated and sent to the automatic control platform; If the frequency of assembly deviation at the machining position does not exceed the deviation frequency threshold, and the continuous occurrence frequency of the cutting size deviation position does not exceed the deviation continuous occurrence frequency threshold, a normal accuracy signal is generated and sent to the automatic control platform.

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