On-line detection and feedback compensation system, method and equipment for large and medium-sized bearing ring size accuracy and storage medium

Abstract

The application discloses an online detection and feedback compensation system, method and equipment for size precision of large and medium-sized bearing rings and a storage medium, relates to the technical field of intelligent manufacturing, and comprises a detection module, which is used for collecting data of detection nodes along a bearing ring circulation path, establishing fixed-angle tracking marks for the same circumferential position and associating the circulation marks of the bearing ring to form an online size state sequence; an identification module, which is used for performing segmented error analysis on circumferential regions of the bearing ring, constructing a dynamic error distribution map of the circumferential regions of the bearing ring, matching size change tracks in historical batches with the online size state sequence, and identifying continuously deviated regions and fluctuation abnormal regions; and a feedback compensation module, which is used for generating online feedback compensation instructions, performing partition compensation adjustment on process parameters, re-collecting size state data after compensation, and generating compensation response results. The application improves the size consistency and stability in the whole process of machining of large and medium-sized bearing rings.

Description

Technical Field

[0001] This invention relates to the field of intelligent manufacturing technology, and in particular to an online detection and feedback compensation system, method, equipment, and storage medium for the dimensional accuracy of large and medium-sized bearing rings. Background Technology

[0002] With the increasing demands for load-bearing capacity and operational stability in fields such as wind power equipment, metallurgical rolling mills, high-speed railways, and large-scale engineering machinery, the dimensional accuracy control of bearing rings is gradually evolving from single-process inspection to end-to-end online collaborative control. In existing bearing ring manufacturing processes, dimensional inspection procedures are typically set up at each stage of forging, rolling, heat treatment, and finishing. Local dimensional parameters are obtained through laser measurement, contact measurement, or roundness inspection, and staged process adjustments are made based on the inspection results. Some production lines have begun to introduce online inspection technology, improving the continuous monitoring capability of the processing process by real-time acquisition of outer diameter, inner diameter, and end face dimensional information. Simultaneously, combined with temperature acquisition and equipment status analysis, auxiliary corrections are made for thermal deformation and local deviations during processing, thereby improving the processing consistency and dimensional stability of large and medium-sized bearing rings.

[0003] However, most existing online inspection technologies focus on single-stage or local processes, lacking a continuous dimensional state correlation mechanism throughout the entire process. The data independence between different inspection nodes is relatively strong, making it difficult to continuously track the dimensional changes of the same circumferential region at different stages. When local dimensional drift occurs in the bearing ring during hot flow, cooling contraction, and multi-stage processing, existing methods typically rely on static corrections based on single inspection results, making it difficult to identify the continuous evolution trend and regional diffusion state of dimensional offset. Furthermore, existing compensation methods are mostly based on overall parameter adjustments, lacking a dynamic zonal compensation mechanism for differentiated errors in the circumferential region. They lack the ability to distinguish between areas of continuous offset and areas of abnormal fluctuation, easily leading to problems such as local overcompensation, compensation lag, or repeated error diffusion, thus affecting the roundness accuracy, end-face consistency, and subsequent assembly stability of large and medium-sized bearing rings. Summary of the Invention

[0004] In view of the problems existing in the online detection and feedback compensation systems for the dimensional accuracy of large and medium-sized bearing rings, this invention is proposed. Therefore, the problem to be solved by this invention is how to provide an online detection and feedback compensation system, method, device, and storage medium for the dimensional accuracy of large and medium-sized bearing rings.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] In a first aspect, the present invention provides an online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings, comprising: a detection module, used to collect dimensional profile data, attitude data and temperature status data of each detection node along the bearing ring flow path, establish a fixed angle tracking mark at the same circumferential position and associate it with the flow identifier of the bearing ring to form an online dimensional status sequence;

[0007] The identification module is used to perform segmented error analysis on each circumferential region of the bearing ring based on the online dimensional state sequence, construct a dynamic error distribution map of each circumferential region of the bearing ring, match the dimensional change trajectory in historical batches with the current online dimensional state sequence, and identify areas of continuous offset and areas of abnormal fluctuation.

[0008] The feedback compensation module is used to generate online feedback compensation instructions based on the dynamic error distribution map, adjust the process parameters in different zones, and generate compensation response results.

[0009] As a preferred embodiment of the online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings described in this invention, the formation of the online dimensional state sequence includes:

[0010] Multiple detection nodes are set along the bearing ring's rotation path, with each detection node corresponding to a different stage in the bearing ring's machining process.

[0011] At the first detection node, a flow identifier is written to the bearing ring and a stage index sequence is established;

[0012] The bearing ring circumference is divided into multiple continuous circumferential regions at a fixed angle. The reference position of the first detection node is used as the circumferential zero position, and a fixed angle tracking mark is established for each circumferential region.

[0013] Based on the flow identifier, stage index sequence, and detection time sequence, the data of different detection nodes are correlated in stages to form an online size status sequence.

[0014] As a preferred embodiment of the online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings described in this invention, the segmented error analysis includes:

[0015] For any circular region in the online size state sequence, extract the size change, attitude change, temperature change, and temperature gradient change between adjacent detection nodes to generate a stage evolution vector, represented as:

[0016]

[0017] In the formula, Indicates the first The stage evolution vector of the circular region. Indicates the first The change in size of the circumferential region. Indicates the first The change in attitude of the circular region. Indicates the first Temperature change over a circular region Indicates the first The change in temperature gradient over the circumferential region;

[0018] By performing continuous stage fitting on the stage evolution vector, the stage drift energy value of the circular region is calculated and expressed as:

[0019]

[0020] In the formula, Indicates the first The stage drift energy value in the circular region Indicates the dimensional reference quantity. Indicates the attitude reference quantity. Represents a temperature reference quantity. Represents a reference quantity for temperature gradient;

[0021] When the stage drift energy value continues to increase, it is determined that there is a size offset trend; when the stage drift energy value fluctuates periodically between adjacent stages, it is determined that there is a local fluctuation anomaly.

[0022] As a preferred embodiment of the online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings described in this invention, the construction of the dynamic error distribution map of each circumferential region of the bearing ring includes:

[0023] Based on the stage drift energy values, the dimensional drift direction, drift duration, drift diffusion state, and regional coupling change state of each circular region at different stages are recorded; the error diffusion coefficient between adjacent circular regions is calculated and expressed as:

[0024]

[0025] In the formula, Indicates the first Circular region and adjacent circular region The error diffusion coefficient between them Represents adjacent circular regions The amount of dimensional change, Represents adjacent circular regions The change in attitude. Represents adjacent circular regions The amount of temperature change; Indicates the first The change in size of the circumferential region. Indicates the first The change in attitude of the circular region. Indicates the first Temperature change in the circumferential region; when the error diffusion coefficient continues to increase, it is determined that the size offset has spread from the local area to the surrounding area; when the error diffusion coefficient decreases, it is determined that the offset state tends to converge; the error diffusion path in the dynamic error distribution map is updated based on the error diffusion coefficient.

[0026] As a preferred embodiment of the online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings described in this invention, the step of matching the dimensional change trajectory in historical batches with the current online dimensional state sequence includes:

[0027] The current online dimensional state sequence of the bearing ring is matched stage by stage with the dimensional change trajectory in the historical batch. The trajectory offset distance between the current stage evolution vector and the historical stage evolution vector is calculated and expressed as:

[0028]

[0029] In the formula, Indicates the first Trajectory offset distance in the circular region This represents the first element in the current stage of the evolution vector. Item component, The first term in the historical stage evolution vector represents the first term. Item component, Indicates the number of dimensions of stage evolution features;

[0030] Based on the correlation between the trajectory offset distance and the dimensional change pattern between the bearing ring and historical batches, when the trajectory offset distance continues to decrease, the current dimensional change trajectory is bound to the dimensional change trajectory in the historical batch, and the compensation change trend of the region during the historical compensation process is extracted.

[0031] As a preferred embodiment of the online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings described in this invention, the generation of online feedback compensation instructions includes:

[0032] Based on the dynamic error distribution map, the compensation accumulation rate is increased in areas of continuous drift, the degree of linkage compensation between adjacent areas is increased in areas of error diffusion, and the compensation change frequency is reduced in areas of abnormal fluctuation. For any circular area, a dynamic compensation vector is generated based on the stage drift energy value, error diffusion coefficient, and trajectory offset distance, expressed as:

[0033]

[0034] In the formula, Indicates the first Dynamic compensation vector for the circular region. Indicates the first The stage drift energy value in the circular region Indicates the first Trajectory offset distance in the circular region Indicates the first Circular region and adjacent circular region The error diffusion coefficient between them This represents the stage evolution time variable of the bearing ring; the process parameters in the current processing stage are adjusted and compensated in sections according to the dynamic compensation vector.

[0035] As a preferred embodiment of the online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings described in this invention, the generation of compensation response results includes:

[0036] Subsequent detection nodes extract compensated data based on fixed-angle tracking markers, recalculate the compensated stage evolution vector and stage drift energy value, and calculate the error convergence index of the circular region, expressed as:

[0037]

[0038] In the formula, Indicates the first Error convergence index of the circular region Indicates the first The stage drift energy value in the circular region Indicates the first Circular region and adjacent circular region The error diffusion coefficient between them Indicates the first Phase drift energy value after circumferential region compensation;

[0039] When the error convergence exponent continues to increase, it is determined that the dimensional offset state is gradually converging; when the error convergence exponent decreases, it is determined that there is still a continuous error diffusion state.

[0040] The compensated error convergence state, error propagation path, and dynamic compensation vector are written back to the historical feedback compensation association record.

[0041] Secondly, the present invention provides an online detection and feedback compensation method for the dimensional accuracy of large and medium-sized bearing rings, which includes: collecting dimensional contour data, attitude data and temperature status data of each detection node along the bearing ring flow path, establishing a fixed angle tracking mark at the same circumferential position and associating it with the flow identifier of the bearing ring to form an online dimensional status sequence;

[0042] Based on the online dimensional status sequence, segmented error analysis is performed on each circumferential region of the bearing ring to construct a dynamic error distribution map of each circumferential region of the bearing ring. The dimensional change trajectory in historical batches is matched with the current online dimensional status sequence to identify areas of continuous offset and areas of abnormal fluctuation.

[0043] Based on the dynamic error distribution map, online feedback compensation instructions are generated to adjust the process parameters in different zones and generate compensation response results.

[0044] Thirdly, the present invention provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of an online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings.

[0045] Fourthly, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program is executed by a processor, it implements the steps of an online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings.

[0046] The beneficial effects of this invention are as follows: By continuously collecting data on the dimensional profile, orientation, and temperature status of bearing rings throughout the entire processing stage, and establishing a fixed-angle tracking mechanism for the same circumferential region, the dimensional change trajectories in different processing stages have a continuous correspondence, which improves the consistency and accuracy of dimensional error identification. By constructing a dynamic error distribution map and combining it with historical dimensional change trajectories to identify areas of continuous offset and abnormal fluctuations, the ability to analyze the evolution trend of dimensional drift and local abnormal states is enhanced. Combined with the partitioned feedback compensation and compensation response comparison process, the pertinence and dynamic adaptability of process adjustments are improved, local overcompensation and error diffusion phenomena are reduced, and the dimensional consistency and stability in the entire processing of large and medium-sized bearing rings are enhanced. Attached Figure Description

[0047] To more clearly illustrate the technical solutions of the embodiments of the present invention, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a structural diagram of an online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings. Detailed Implementation

[0049] To make the above-mentioned objects, features, and advantages of the present invention more readily understood, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0050] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0051] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0052] Reference Figure 1 This is the first embodiment of the present invention, which provides an online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings, including:

[0053] The detection module is used to collect dimensional profile data, attitude data and temperature status data of each detection node along the bearing ring's rotation path, establish fixed angle tracking marks at the same circumferential position and associate them with the bearing ring's rotation identifier to form an online dimensional status sequence;

[0054] The identification module is used to perform segmented error analysis on each circumferential region of the bearing ring based on the online dimensional state sequence, construct a dynamic error distribution map of each circumferential region of the bearing ring, match the dimensional change trajectory in historical batches with the current online dimensional state sequence, and identify areas of continuous offset and areas of abnormal fluctuation.

[0055] The feedback compensation module is used to generate online feedback compensation instructions based on the dynamic error distribution map, adjust the process parameters in different zones, and generate compensation response results.

[0056] Specifically, multiple detection nodes are set along the bearing ring flow path. Each detection node is located at a different stage in the bearing ring processing. After the bearing ring enters the first detection node, a flow identifier is written to the current bearing ring, and a stage index sequence corresponding to the flow identifier is established.

[0057] The detection nodes continuously collect data on the dimensions, profiles, orientation, and temperature of the bearing rings.

[0058] The dimensional profile data includes the outer circle profile, inner circle profile, and end face profile of the bearing ring; the attitude data includes the axial offset state, circumferential oscillation state, and end face tilt state of the bearing ring during transport; and the temperature state data includes the surface temperature distribution state and temperature change gradient of the circumferential region of the bearing ring.

[0059] After the bearing ring enters the inspection area, the circumference of the bearing ring is divided into multiple continuous circumferential regions according to a fixed angle, and the reference position in the first inspection node is used as the circumferential zero position to establish a fixed angle tracking mark for each circumferential region.

[0060] Each detection node extracts data of the corresponding circumferential area based on a fixed angle tracking mark, so that the dimensional state of the same circumferential area remains continuously corresponding in different processing stages;

[0061] Based on the flow identifier, stage index sequence, and detection time sequence, the data in different detection nodes are correlated in stages to form an online dimensional status sequence of the bearing ring.

[0062] For any circular region in the online size state sequence, extract the size change, attitude change, and temperature change of the region between adjacent detection nodes, and generate the stage evolution vector of the region, represented as:

[0063]

[0064] In the formula, Indicates the first The stage evolution vector of the circular region. Indicates the first The change in size of the circumferential region. Indicates the first The change in attitude of the circular region. Indicates the first Temperature change over a circular region Indicates the first The change in temperature gradient over the circumferential region.

[0065] The stage evolution vector is fitted continuously in stages, and the stage drift energy value of the circular region is calculated, expressed as:

[0066]

[0067] In the formula, Indicates the first The stage drift energy value in the circular region Indicates the dimensional reference quantity. Indicates the attitude reference quantity. Represents a temperature reference quantity. The temperature gradient reference value is represented by the stage drift energy value, which is used to characterize the overall change intensity of the circumferential region in the current stage. When the stage drift energy value of a certain circumferential region continues to increase, it indicates that there is a continuous accumulating size shift trend in the region. When the stage drift energy value fluctuates periodically between adjacent stages, it indicates that there is a local fluctuation anomaly in the region.

[0068] Based on the stage drift energy value, continuous error analysis is performed on each circumferential region, and a dynamic error distribution map is constructed. The dynamic error distribution map records the size drift direction, drift duration, drift diffusion state, and regional coupling change state of each circumferential region in different stages. The regional coupling change state is used to describe the error propagation trend between adjacent circumferential regions.

[0069] Based on the stage drift energy values, the drift direction, drift duration, drift diffusion state, and regional coupling change state of each circular region at different stages are recorded. The error diffusion coefficient between the circular regions is calculated and expressed as:

[0070]

[0071] In the formula, Indicates the first Circular region and adjacent circular region The error diffusion coefficient between them Represents adjacent circular regions The amount of dimensional change, Represents adjacent circular regions The change in attitude. Represents adjacent circular regions The amount of temperature change; Indicates the first The change in size of the circumferential region. Indicates the first The change in attitude of the circular region. Indicates the first The temperature change over the circumference region.

[0072] When the error diffusion coefficient between adjacent circular regions continuously increases, it indicates that the dimensional offset has spread from the local area to the surrounding area; when the error diffusion coefficient gradually decreases, it indicates that the dimensional offset state of the current region is converging. Based on the error diffusion coefficient, the error diffusion path in the dynamic error distribution map is continuously updated.

[0073] The current online dimensional state sequence of the bearing ring is matched stage by stage with the dimensional change trajectory in the historical batch, and the trajectory offset distance between the current stage evolution vector and the historical stage evolution vector is calculated, expressed as:

[0074]

[0075] In the formula, Indicates the first Trajectory offset distance in the circular region This represents the first element in the current stage of the evolution vector. Item component, The first term in the historical stage evolution vector represents the first term. Item component, This indicates the number of dimensions of the evolutionary features at each stage.

[0076] The dimensional change patterns between the current bearing ring and historical batches are correlated based on the trajectory offset distance. When the trajectory offset distance continues to decrease, the current dimensional change trajectory is bound to the dimensional change trajectory in the historical batches, and the compensation change trend of the region during the historical compensation process is extracted.

[0077] Online feedback compensation instructions are generated based on the dynamic error distribution map, and different compensation response paths are established for the continuous offset region, the error diffusion region, and the abnormal fluctuation region.

[0078] For regions with continuous offset, increase the rate of compensation accumulation in those regions; for regions with error diffusion, increase the degree of coordinated compensation between adjacent regions; for regions with abnormal fluctuations, reduce the frequency of compensation changes to weaken the impact of local abnormal fluctuations on the overall compensation process.

[0079] For any circular region, the dynamic compensation vector of the region, generated based on the stage drift energy value, error diffusion coefficient, and trajectory offset distance, is expressed as:

[0080]

[0081] In the formula, Indicates the first Dynamic compensation vector for the circular region. This represents the time variable indicating the stage evolution of the bearing ring.

[0082] Based on the dynamic compensation vector, the process parameters in the current processing stage are adjusted by partition compensation, so that the adjustment amount in the continuous offset area changes synchronously with the stage drift energy value, the adjustment range in the error diffusion area changes synchronously with the error diffusion path, and the adjustment frequency in the fluctuation abnormal area changes synchronously with the evolution rate.

[0083] After compensation is completed, the bearing ring continues to flow to the subsequent inspection node. The subsequent inspection node re-collects the compensated size profile data, attitude data, and temperature status data, and extracts the compensated data of the same circumferential area according to the fixed angle tracking mark. It then recalculates the compensated stage evolution vector and stage drift energy value and compares them with the dynamic error distribution map before compensation.

[0084] For the state changes before and after compensation, the error convergence index of the circular region is calculated and expressed as:

[0085]

[0086] In the formula, Indicates the first Error convergence index of the circular region Indicates the first The stage drift energy value after compensation in the circumferential region.

[0087] When the error convergence exponent continues to increase, it indicates that the size offset state of the current region is gradually converging; when the error convergence exponent decreases, it indicates that there is still a continuous error diffusion state in the current region.

[0088] The compensated error convergence state, error propagation path, and dynamic compensation vector are written back to the historical feedback compensation association record. This allows subsequent bearing rings to enter the same processing stage and call the compensation change trajectory based on the error evolution state in the historical stage, thus completing online detection and dynamic feedback compensation for the entire process of dimensional accuracy control.

[0089] Furthermore, this embodiment also provides an online detection and feedback compensation method for the dimensional accuracy of large and medium-sized bearing rings, including:

[0090] The dimensional profile data, attitude data and temperature status data of each detection node are collected along the bearing ring flow path. Fixed angle tracking marks are established at the same circumferential position and associated with the bearing ring flow mark to form an online dimensional status sequence.

[0091] Based on the online dimensional status sequence, segmented error analysis is performed on each circumferential region of the bearing ring to construct a dynamic error distribution map of each circumferential region of the bearing ring. The dimensional change trajectory in historical batches is matched with the current online dimensional status sequence to identify areas of continuous offset and areas of abnormal fluctuation.

[0092] Based on the dynamic error distribution map, online feedback compensation instructions are generated to adjust the process parameters in different zones and generate compensation response results.

[0093] This embodiment also provides a computer device applicable to the online detection and feedback compensation method for the dimensional accuracy of large and medium-sized bearing rings, including: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions to implement all or part of the steps of the method described in the above embodiments of the present invention.

[0094] This embodiment also provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, it performs the method in any optional implementation of the above embodiments. The storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0095] The storage medium proposed in this embodiment and the data storage method proposed in the above embodiments belong to the same inventive concept. Technical details not described in detail in this embodiment can be found in the above embodiments, and this embodiment has the same beneficial effects as the above embodiments.

[0096] In summary, this invention continuously collects data on the dimensional profile, orientation, and temperature status throughout the entire processing stage of bearing rings, and establishes a fixed-angle tracking mechanism for the same circumferential region. This ensures a continuous correspondence between dimensional change trajectories in different processing stages, improving the consistency and accuracy of dimensional error identification. By constructing a dynamic error distribution map and combining it with historical dimensional change trajectories to identify areas of continuous offset and abnormal fluctuations, it enhances the ability to analyze the evolution trend of dimensional drift and local abnormal states. Combined with the partitioned feedback compensation and compensation response comparison process, it improves the targeting and dynamic adaptability of process adjustments, reduces local overcompensation and error diffusion, and enhances the dimensional consistency and stability throughout the entire processing of large and medium-sized bearing rings.

[0097] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings, characterized in that: include: The detection module is used to collect dimensional profile data, attitude data and temperature status data of each detection node along the bearing ring's rotation path, establish fixed angle tracking marks at the same circumferential position and associate them with the bearing ring's rotation identifier to form an online dimensional status sequence; The identification module is used to perform segmented error analysis on each circumferential region of the bearing ring based on the online dimensional state sequence, construct a dynamic error distribution map of each circumferential region of the bearing ring, match the dimensional change trajectory in historical batches with the current online dimensional state sequence, and identify areas of continuous offset and areas of abnormal fluctuation. The feedback compensation module is used to generate online feedback compensation instructions based on the dynamic error distribution map, adjust the process parameters in different zones, and generate compensation response results.

2. The online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings as described in claim 1, characterized in that: The formation of the online size state sequence includes: Multiple detection nodes are set along the bearing ring's rotation path, with each detection node corresponding to a different stage in the bearing ring's machining process. At the first detection node, a flow identifier is written to the bearing ring and a stage index sequence is established; The bearing ring circumference is divided into multiple continuous circumferential regions at a fixed angle. The reference position of the first detection node is used as the circumferential zero position, and a fixed angle tracking mark is established for each circumferential region. Based on the flow identifier, stage index sequence, and detection time sequence, the data of different detection nodes are correlated in stages to form an online size status sequence.

3. The online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings as described in claim 1, characterized in that: The piecewise error analysis includes: For any circular region in the online size state sequence, extract the size change, attitude change, temperature change, and temperature gradient change between adjacent detection nodes to generate a stage evolution vector, represented as: ； In the formula, Indicates the first The stage evolution vector of the circular region. Indicates the first The change in size of the circumferential region. Indicates the first The change in attitude of the circular region. Indicates the first Temperature change over a circular region Indicates the first The change in temperature gradient over the circumferential region; By performing continuous stage fitting on the stage evolution vector, the stage drift energy value of the circular region is calculated and expressed as: ； In the formula, Indicates the first The stage drift energy value in the circular region Indicates the dimensional reference quantity. Indicates the attitude reference quantity. Represents a temperature reference quantity. Represents a reference quantity for temperature gradient; When the stage drift energy value continues to increase, it is determined that there is a size offset trend; when the stage drift energy value fluctuates periodically between adjacent stages, it is determined that there is a local fluctuation anomaly.

4. The online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings as described in claim 3, characterized in that: The dynamic error distribution diagram of each circumferential region of the constructed bearing ring includes: Based on the stage drift energy values, the dimensional drift direction, drift duration, drift diffusion state, and regional coupling change state of each circular region at different stages are recorded; the error diffusion coefficient between adjacent circular regions is calculated and expressed as: ； In the formula, Indicates the first Circular region and adjacent circular region The error diffusion coefficient between them Indicates adjacent circular regions The amount of dimensional change, Represents adjacent circular regions The change in attitude. Represents adjacent circular regions The amount of temperature change; Indicates the first The change in size of the circumferential region. Indicates the first The change in attitude of the circular region. Indicates the first The temperature change over the circumferential region; When the error diffusion coefficient continues to increase, it is determined that the size offset has spread from the local area to the surrounding area. When the error diffusion coefficient decreases, it is determined that the offset state tends to converge. The error diffusion path in the dynamic error distribution map is updated based on the error diffusion coefficient.

5. The online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings as described in claim 1, characterized in that: The step of matching the size change trajectory in historical batches with the current online size status sequence includes: The current online dimensional state sequence of the bearing ring is matched stage by stage with the dimensional change trajectory in the historical batch. The trajectory offset distance between the current stage evolution vector and the historical stage evolution vector is calculated and expressed as: ； In the formula, Indicates the first The trajectory offset distance over the circular region. This represents the first element in the current stage of the evolution vector. Item component, The first term in the historical stage evolution vector represents the first term. Item component, Indicates the number of dimensions of stage evolution features; Based on the correlation between the trajectory offset distance and the dimensional change pattern between the bearing ring and historical batches, when the trajectory offset distance continues to decrease, the current dimensional change trajectory is bound to the dimensional change trajectory in the historical batch, and the compensation change trend of the region during the historical compensation process is extracted.

6. The online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings as described in claim 1, characterized in that: The generated online feedback compensation instruction includes: Based on the dynamic error distribution map, the compensation accumulation rate is increased in areas of continuous drift, the degree of linkage compensation between adjacent areas is increased in areas of error diffusion, and the compensation change frequency is reduced in areas of abnormal fluctuation. For any circular area, a dynamic compensation vector is generated based on the stage drift energy value, error diffusion coefficient, and trajectory offset distance, expressed as: ； In the formula, Indicates the first Dynamic compensation vector for the circular region. Indicates the first The stage drift energy value in the circular region Indicates the first The trajectory offset distance over the circular region. Indicates the first Circular region and adjacent circular region The error diffusion coefficient between them The time variable representing the stage evolution of the bearing ring; The process parameters in the current processing stage are adjusted and compensated in different areas based on the dynamic compensation vector.

7. The online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings as described in claim 1, characterized in that: The generated compensation response results include: Subsequent detection nodes extract compensated data based on fixed-angle tracking markers, recalculate the compensated stage evolution vector and stage drift energy value, and calculate the error convergence index of the circular region, expressed as: ； In the formula, Indicates the first Error convergence index of the circular region Indicates the first The stage drift energy value in the circular region Indicates the first Circular region and adjacent circular region The error diffusion coefficient between them Indicates the first Phase drift energy value after circumferential region compensation; When the error convergence exponent continues to increase, it is determined that the size offset state is gradually converging; when the error convergence exponent decreases, it is determined that there is still a continuous error diffusion state.

8. An online detection and feedback compensation method for the dimensional accuracy of large and medium-sized bearing rings, based on the online detection and feedback compensation system for the dimensional accuracy of large and medium-sized bearing rings as described in any one of claims 1 to 7, characterized in that: include: The dimensional profile data, attitude data and temperature status data of each detection node are collected along the bearing ring flow path. Fixed angle tracking marks are established at the same circumferential position and associated with the bearing ring flow mark to form an online dimensional status sequence. Based on the online dimensional status sequence, segmented error analysis is performed on each circumferential region of the bearing ring to construct a dynamic error distribution map of each circumferential region of the bearing ring. The dimensional change trajectory in historical batches is matched with the current online dimensional status sequence to identify areas of continuous offset and areas of abnormal fluctuation. Based on the dynamic error distribution map, online feedback compensation instructions are generated to adjust the process parameters in different zones and generate compensation response results.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, it implements the steps of the online detection and feedback compensation method for the dimensional accuracy of large and medium-sized bearing rings as described in claim 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, it implements the steps of the online detection and feedback compensation method for the dimensional accuracy of large and medium-sized bearing rings as described in claim 8.

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