A numerical control machine tool cutter life closed-loop management and label printing control method

Abstract

The present application relates to the technical field of numerical control management, in particular to a kind of numerical control machine tool tool life closed-loop management and label printing control method, specific steps are: tool room tooling and initial label generation;Machine scanning code and automatically binding on machine;Life real-time accumulation in processing;Robust correction of remaining life;Unloading record generation and Pad linkage when changing type disassembly;Dynamic label printing;Tool return and reuse again;Abnormal processing and verification feedback.The numerical control machine tool tool life closed-loop management and label printing control method provided by the present application makes tool life loss calculation fit actual machining load, feed and abnormal working condition, and the statistical precision is higher compared with traditional pure timing life;Through remaining life abnormal jump detection and dynamic exponential smoothing correction algorithm, the data distortion caused by communication interference and abnormal working condition is inhibited, and the stability and accuracy of tool life control are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of CNC management technology, and in particular to a closed-loop management method for the tool life of CNC machine tools and a label printing control method. Background Technology

[0002] Currently, tool management in existing CNC machining centers with tool magazines and automatic tool changers is mostly manual, involving tasks such as manually recording tool life, manually entering compensation values, and manually printing labels. However, when tools move between the tool room, the machine tool, unloading, returning, and re-issuing, tool life values ​​are easily overwritten, omitted, or incorrectly entered, leading to tools being used beyond their lifespan, premature scrapping, incorrect tool positions, or discrepancies between label information and the CNC system.

[0003] Writing QR code fields into the CNC system can solve some of the problems that rely on manual operation to a certain extent. However, simply writing QR code fields into the CNC system makes it difficult to form a stable and reliable closed-loop control due to the lack of life decay calculation, abnormal data filtering, communication consistency verification, label version anti-counterfeiting, unloading record deduplication, and dynamic correction of remaining life. It may also lead to problems such as tool overuse or premature scrapping. Summary of the Invention

[0004] To address the aforementioned deficiencies, this invention provides a closed-loop management method for CNC machine tool tool life and a label printing control method, thereby resolving the technical problems existing in the prior art.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A method for closed-loop management of CNC machine tool tool life and label printing control, comprising the following steps: S1, Tool chamber tool setting and initial label generation; S2, the machine tool scans the code upon boarding and automatically binds it; S3, the lifespan is accumulated in real time during the processing; S4, Remaining lifetime robust correction; S5, unloading record generation during model change and disassembly is linked with Pad; S6, dynamic label printing; S7, Tool return and reuse; S8, Exception Handling and Verification Feedback.

[0006] Furthermore, in S3, the lifespan is accumulated in real time during the processing, as follows: S31, real-time acquisition of processing condition data; Real-time acquisition of machining process condition data, including at least spindle running time, spindle load, feed rate, material coefficient Km, tool type coefficient Kt, and alarm penalty coefficient Ka; S32, Calculation of tool life attenuation increment; Depending on whether the machine tool CNC system has a spindle load acquisition function, calculate the tool life decay increment for a single machining operation; S33, the original remaining tool life data is updated in real time; The tool's used life, L, is calculated in real-time and cumulatively. used-new =L used-old +ΔL, combined with the preset tool life rating L rated Real-time iterative calculation of the tool's current original remaining life R raw The calculation method is: R raw =L rated -L used-new ; L used-new The cumulative service life prior to this update cycle; L used-old For the new cumulative used life of the current period, R raw To calculate the tool's current original remaining life in real time, L rated This is the preset tool life rating.

[0007] Furthermore, in S32: For CNC machine tool systems equipped with spindle load acquisition capabilities, the formula for calculating the incremental decrease in equivalent tool life during a single machining operation is as follows: ΔL=Δt×[1+α·max(0,P / P0-1)+β·max(0,F / F0-1)]×Km×Kt×Ka; For CNC machine tool systems without spindle load acquisition capabilities, the formula for calculating the incremental decrease in equivalent tool life during a single machining operation is as follows: ΔL=Δt×Km×Kt Wherein, ΔL is the tool equivalent life decay increment for a single machining operation; Δt is the effective spindle running time within a single acquisition cycle; P0 is the preset spindle reference load; P is the real-time acquired spindle load; F0 is the preset reference feed rate; F is the real-time reference feed rate; α is the spindle load over-threshold loss weighting coefficient, which is a preset constant; β is the feed rate over-threshold loss weighting coefficient, which is a preset constant; Km is the machining material loss coefficient; Kt is the tool type loss coefficient; Ka is the alarm penalty coefficient; when there is no machine tool alarm, Ka=1; when there is a machine tool alarm, Ka>1.

[0008] Furthermore, S4, the robust correction of the original remaining lifetime, is performed as follows: S41, Lifetime Abnormal Jump Detection and Fault Tolerance Handling; For the original remaining lifetime R raw Perform anomaly detection and pre-set the maximum theoretical tool life consumption threshold Q per cycle. maxWhen the difference in remaining lifetime between two adjacent sampling periods exceeds the maximum theoretical consumption threshold Q max At that time, the current lifetime data is determined to be an abnormal jump; S42, Dynamic Exponential Smoothing Lifetime Correction; The original remaining lifetime R is calculated using a dynamic exponential smoothing algorithm. raw After smoothing correction, the reliable remaining lifetime is obtained. The correction formula is as follows: R=λ·R raw +(1-λ)·R last Where R is the reliable remaining lifetime after smoothing and fault tolerance processing in this cycle; λ is the dynamic smoothing coefficient, with a value range of 0 < λ ≤ 1; R raw Calculate the original remaining lifetime for the current cycle; R last The remaining lifetime of the previous cycle; S43, Tool life warning and machining access control; Preset tool life warning threshold T warn With processing stop threshold T stop ; When the reliable remaining lifetime R < the warning threshold T warn When needed, remind others to prepare a knife; When the reliable remaining lifetime R ≤ the stopping threshold T stop If this occurs, it is prohibited to continue using the cutting tool to perform the machining operation.

[0009] Further, in S1, tool chamber tool setting and initial label generation, the process is as follows: S11, obtain tool parameters and set life parameters; S12, standardizes the tool data; S13, Generate a unique identification code for the tool; S14, Construct the initial QR code data packet; S15, Initial labeling and securing of cutting tools.

[0010] Furthermore, in S14, based on the generated tool unique identifier ToolUID, the initial QR code data package is constructed by integrating all tool information and the encapsulation is completed; The complete tool information includes: tool number, tool name, length compensation value, radius compensation value, tool rated life, tool initial remaining life, tool setting personnel, tool setting date, and field summary Sign0; Wherein, the initial remaining tool life is the initial usable life value of the tool; The field summary Sign0 is used for integrity verification and anti-tampering verification of the initial QR code data packet.

[0011] Furthermore, the field summary Sign0 is obtained by hashing and encrypting the data of each field: tool number, tool name, length compensation value, radius compensation value, tool rated life, tool initial remaining life, tool setting personnel, and tool setting date.

[0012] Furthermore, S2, the machine tool is scanned and automatically bound upon boarding, including the following steps: S21, Tool positioning and QR code data integrity verification; The tool that has completed the initial calibration is assembled into the designated tool position on the machine tool. The QR code graphic of the initial label corresponding to the tool is scanned by the barcode scanning device. The QR code data packet is parsed, and data integrity and anti-tampering verification are performed by the field digest Sign0. S22, Real-time communication is established between the machine tool CNC system and the mobile Pad device; S23, Batch write tool standard parameters to tool positions; The parameters to be written include: length compensation value, radius compensation value, tool rated life, initial remaining tool life, tool name, and tool unique identifier ToolUID.

[0013] S24, parameter readback, tool position verification summary comparison and verification.

[0014] Furthermore, in S21, if the Sign0 summary information obtained from the verification matches or the data version is normal, the QR code data packet is determined to be valid, and subsequent parameter writing operations are performed. If the Sign0 digest information obtained from the verification does not match or the data version is abnormal, the QR code data packet is determined to be invalid, subsequent parameter writing operations are prohibited, and the current binding process is terminated.

[0015] Furthermore, in S24, the read-back values ​​are uniformly quantized and normalized according to the preset number of decimal places; then, the tool position verification digest CncSign is calculated through a hash algorithm. The calculated fields of the tool position verification summary CncSign include: tool position number, length compensation value, radius compensation value, tool rated life, tool initial remaining life, and tool unique identifier ToolUID; The calculated tool position verification summary CncSign is compared with the standard summary information pre-stored in the CNC system. If the comparison results are consistent, the parameter binding is deemed valid, and a successful binding prompt is output. If the comparison results are inconsistent, or there is a communication error or timeout, the tool position binding data is automatically rolled back, the abnormal parameters are cleared, and the corresponding binding failure reason is output, thus completing the closed-loop verification of the tool binding.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The CNC tool life closed-loop management and label printing control method of the present invention, through a load-weighted life decay algorithm, enables the tool life loss calculation to closely match the actual machining load, feed and abnormal working conditions. Compared with the traditional pure time-based life statistics, it has higher accuracy and effectively solves the problem of inconsistency between the actual tool, machine tool CNC parameters and paper label data. It avoids the problems of repeated printing, repeated life deduction and record loss caused by communication jitter, suppresses data distortion caused by communication interference and abnormal working conditions, and greatly improves the stability and accuracy of tool life management. Detailed Implementation

[0017] The technical solution of the present invention will be further described in a non-limiting manner below with reference to specific embodiments.

[0018] This embodiment provides a method for closed-loop management of CNC machine tool life and label printing control, which includes the following steps: S1, Tool chamber tool setting and initial label generation; S2, the machine tool scans the code upon boarding and automatically binds it; S3, the lifespan is accumulated in real time during the processing; S4, Remaining lifetime robust correction; S5, unloading record generation during model change and disassembly is linked with Pad; S6, dynamic label printing; S7, Tool return and reuse; S8, Exception Handling and Verification Feedback.

[0019] S1, tool chamber tool setting and initial label generation, is performed as follows: S11, obtain tool parameters and set life parameters; The tool chamber is precisely inspected by a tool setter to obtain tool parameters such as tool length compensation value, radius compensation value, exposed tool length, and tool holder number. Simultaneously, the rated tool life L is set based on the tool material, specifications, and suitable machining conditions. rated .

[0020] S12, standardizes the tool data; The acquired tool parameters are normalized to obtain normalized effective feature fields. The effective feature fields are then concatenated using a delimiter to form concatenated multi-dimensional feature fields.

[0021] Specifically, numeric fields are quantized and standardized according to a preset number of decimal places; date data is uniformly converted to a standard timestamp format; and empty or missing field content is filled with preset placeholders. This achieves standardized and unified output of all data fields.

[0022] The standardization of tool data can be achieved through mobile tablet devices or the built-in algorithm program of the tool setting instrument.

[0023] The effective feature fields after standardization include ToolNo, HolderNo, BatchNo, PresetTime, and Operator.

[0024] Set delimiters between each valid feature field, and then concatenate them to obtain the concatenated multi-dimensional feature fields.

[0025] S13, Generate a unique identification code for the tool; Based on the normalized and valid data, the concatenated multi-dimensional feature fields are encrypted using a hash algorithm to generate a unique tool identifier, ToolUID.

[0026] The hash algorithm can be any one of the CRC32 algorithm, SHA-256 algorithm, or the national cryptographic SM3 algorithm.

[0027] S14, Construct the initial QR code data packet; Based on the generated tool unique identifier ToolUID, the initial QR code data package is constructed by integrating all tool information and then encapsulated.

[0028] The complete tool information includes: tool number, tool name, length compensation value, radius compensation value, tool rated life, tool initial remaining life, tool setting personnel, tool setting date, and field summary Sign0.

[0029] The initial remaining tool life is the initial usable life value of the tool.

[0030] The field digest Sign0 is used for integrity verification and tamper-proof verification of the initial QR code data packet. The field digest Sign0 is generated using a hash algorithm.

[0031] Specifically, hash encryption calculations are performed on the data of each field, including tool number, tool name, length compensation value, radius compensation value, tool rated life, initial remaining tool life, tool setting personnel, and tool setting date, to obtain the field digest Sign0.

[0032] S15, Initial labeling and securing of cutting tools; The initial QR code data packet that has been packaged is parsed and printed to generate the initial label for the tool. This label simultaneously carries a machine-readable QR code graphic and human-readable text information, and the QR code data and text information are from the same source and can communicate with each other. The completed initial label is fixedly assembled to the preset position of the tool holder using a special buckle, completing the parameter calibration and identity binding of the tool before it leaves the factory, so that the tool data can be retrieved by scanning the code on the production site later.

[0033] S2, the machine tool scans the code upon boarding and automatically binds it. This includes the following steps: S21, Tool positioning and QR code data integrity verification; The initially calibrated tool is assembled into the designated tool position on the machine tool. The initial label QR code graphic on the tool holder is scanned by a barcode scanner. The QR code data packet is parsed, and the field digest Sign0 generated in S1 is called to perform data integrity verification and anti-tampering verification.

[0034] If the Sign0 digest information obtained from the verification matches or the data version is normal, the QR code data packet is determined to be valid, and subsequent parameter writing operations are performed. If the Sign0 digest information obtained from the verification does not match or the data version is abnormal, the QR code data packet is determined to be invalid, subsequent parameter writing operations are prohibited, and the current binding process is terminated.

[0035] S22, Real-time communication is established between the machine tool CNC system and the mobile Pad device; The mobile Pad device establishes a real-time communication session with the machine tool CNC system through the OPC UA communication protocol, and enables a three-stage consistency writing mechanism of parameter writing, data reading back, and summary comparison to ensure the accuracy and reliability of tool parameter binding on the machine.

[0036] S23, Batch write tool standard parameters to tool positions; After successful verification, the mobile tablet device batch writes the standardized parameters obtained from parsing the QR code data packet into the parameter storage area of ​​the corresponding tool position in the machine tool's CNC system. Specific fields written include: length compensation value, radius compensation value, tool rated life, initial remaining tool life, tool name, and the tool's unique identifier, ToolUID.

[0037] S24, parameter readback, tool position verification summary comparison and verification; After the parameters are written, the mobile Pad device reads back all the written parameters for the corresponding tool position from the machine tool CNC system. First, the read-back values ​​are uniformly quantized and standardized according to the decimal places preset in S12. Then, a tool position verification digest (CncSign) is calculated using a hash algorithm. The calculated fields of CncSign include: tool position number, length compensation value, radius compensation value, tool rated life, tool initial remaining life, and tool unique identifier (ToolUID). The calculated CncSign is compared with the standard digest information pre-stored in the system. If the comparison results are consistent, the parameter binding is deemed valid, and a successful binding message is output. If the comparison results are inconsistent, or there is a communication error or timeout, the tool position binding data is automatically rolled back, abnormal parameters are cleared, and the corresponding binding failure reason is output, completing the closed-loop verification of this tool binding.

[0038] S3, the lifespan is accumulated in real time during the processing, as follows: S31, real-time acquisition of processing condition data; After the tool is bound to the machine and machining begins, the machine tool's CNC system collects machining process data in real time. The collected data includes at least the spindle running time, spindle load, feed rate, material coefficient Km, tool type coefficient Kt, and alarm penalty coefficient Ka, providing data support for tool life attenuation calculation.

[0039] S32, Calculation of tool life attenuation increment; Depending on whether the machine tool's CNC system has a spindle load acquisition function, the life decay increment of the tool in a single machining operation is calculated.

[0040] For CNC machine tool systems equipped with spindle load acquisition capabilities, the formula for calculating the incremental decrease in equivalent tool life during a single machining operation is as follows: ΔL=Δt×[1+α·max(0,P / P0-1)+β·max(0,F / F0-1)]×Km×Kt×Ka; For CNC machine tool systems without spindle load acquisition capabilities, the formula for calculating the incremental decrease in equivalent tool life during a single machining operation is as follows: ΔL=Δt×Km×Kt Wherein, ΔL is the incremental decrease in equivalent tool life during a single machining operation; Δt is the effective spindle runtime within a single acquisition cycle; P0 is the preset spindle reference load; P is the real-time acquired spindle load; F0 is the preset reference feed rate; F is the real-time reference feed rate; α is the spindle load over-threshold loss weighting coefficient, a preset constant; β is the feed rate over-threshold loss weighting coefficient, a preset constant; Km is the machining material loss coefficient, determined by the material being machined; Kt is the tool type loss coefficient, determined by the tool material and tool structure specifications; Ka is the alarm penalty coefficient; when there is no machine tool alarm, Ka=1; when machining alarms such as overload, tool breakage, and vibration occur, Ka is greater than 1, and a weighted penalty correction is applied to the tool life consumption.

[0041] S33, the original remaining tool life data is updated in real time; The tool's used life, L, is calculated in real-time and cumulatively. used-new =L used-old +ΔL, and simultaneously combined with the preset tool life L in S1. rated Real-time iterative calculation of the tool's current original remaining life R raw The calculation method is: R raw =L rated -L used-new This enables dynamic and precise cumulative updates of tool life loss during machining.

[0042] L used-new The cumulative service life prior to this update cycle; L used-old For the new cumulative used life of the current period, R raw To calculate the tool's current original remaining life in real time, L rated This is the preset tool life rating.

[0043] S4, Robust Correction to Original Remaining Lifetime. The process is as follows: S41, Lifetime Abnormal Jump Detection and Fault Tolerance Handling; The original remaining lifetime R of the S3 output raw Perform anomaly detection and pre-set the maximum theoretical tool life consumption threshold Q per cycle. max When the difference in remaining lifetime between two adjacent sampling periods exceeds the maximum theoretical consumption threshold Q max If the current lifetime data is determined to be an abnormal jump, the abnormal calculated value is discarded and the reliable remaining lifetime value of the previous cycle is used to avoid lifetime data distortion caused by operating condition fluctuations and communication fluctuations.

[0044] The maximum theoretical life consumption threshold Q of the cutting tool in a single cycle max Pre-calibrate and solidify the maximum wear based on tool specifications, sampling cycle, and theoretical maximum wear under extreme working conditions.

[0045] S42, Dynamic Exponential Smoothing Lifetime Correction; The original remaining lifetime R is calculated using a dynamic exponential smoothing algorithm. raw After smoothing correction, the reliable remaining lifetime is obtained. The correction formula is as follows: R=λ·R raw +(1-λ)·R last Where R is the reliable remaining lifetime after smoothing and fault tolerance processing in this cycle; λ is the dynamic smoothing coefficient, which can be adaptively and dynamically adjusted according to the system sampling period, the real-time machining status of the machine tool, and the OPC UA communication quality, and its value range is 0 < λ ≤ 1; R raw Calculate the original remaining lifetime for the current cycle; R last The remaining lifetime of the previous cycle is a reliable indicator, ensuring that the lifetime curve is continuous, stable, and closely matches the actual wear and tear patterns.

[0046] S43, Tool life warning and machining access control; Preset tool life warning threshold T warn With processing stop threshold T stop ; When the reliable remaining lifetime R < the warning threshold T warn At this time, a spare knife reminder pops up on the mobile Pad device, prompting the operator to prepare a spare knife in advance; When the reliable remaining lifetime R ≤ the stopping threshold T stop When this occurs, the CNC system will prevent the tool from continuing to perform machining operations, thus providing a safety net for tool life and preventing machining beyond its lifespan.

[0047] S5, during model changeover and disassembly, unloading records are generated in conjunction with the Pad. The process is as follows: S51, Structured reporting of tool unloading data; Execute the tool unload command on the CNC system panel. The CNC system will store the tool's unique identifier (ToolUID), tool number, original tool position number, reliable remaining tool life, and used tool life (L). used The uninstallation timestamp and CNC session number are packaged in a unified structure and written into the system preset variable / Channel / Tool / unloadedLog to complete the solidification of the original data of the uninstallation event.

[0048] S52, unique identifier generation for subscription listening and unload events; The mobile Pad device, acting as an OPC UA client, maintains a persistent connection with the CNC system, subscribing to and listening to the ` / Channel / Tool / unloadedLog` variable in real time. When an update to this variable is pushed, the Pad executes an idempotent deduplication algorithm for unloaded records, generating a unique event identifier (EventID) through hash calculation. The calculation method is as follows: EventID = HASH(ToolUID|Original Tool Position Number|Unload Timestamp|CNC Session Number).

[0049] S53, Idempotent deduplication and uninstallation list update; The mobile Pad device locally caches processed EventID records. If the EventID being pushed already exists, it is considered a duplicate push and is automatically ignored. If the EventID is a brand new event, the uninstallation record is written to the "Uninstallation to be Confirmed" list on the mobile Pad device. The list is arranged in reverse chronological order of the uninstallation event time to ensure the uniqueness and timeliness of the records.

[0050] S6, Dynamic Label Printing. The process is as follows: S61, Unload tool full parameter readback acquisition; After clicking the uninstallation print command on the corresponding uninstallation record entry on the mobile Pad device, the Pad device uses the original tool position number of the current record as an index to initiate a batch read request to the CNC system via the OPC UA protocol to obtain the tool name, length compensation value, radius compensation value, reliable remaining life, and tool rated life L in real time. rated Machine tool number, currently logged-in operator information, and current system time.

[0051] S62, Dynamic Tag Data Package and Chained Summary Generation; The mobile tablet device reads all parameters in real time to construct a dynamic tag data package for tool reuse. The data package fields include: ToolUID, tag version (Version), previous version hash value (PrevHash), current business field hash value (CurrHash), trusted remaining life (R), tool rated life (Lrated), machine tool number, operator, and update date. Among them, CurrHash is calculated by a hash algorithm, and the calculated fields include Version, PrevHash, and all tool business fields. A multi-version tag hash chain verification system is constructed to achieve traceability, tamper-proof, and rollback-proof tag data throughout the tool's entire life cycle.

[0052] S63, Print Pre-inspection and Compliance Output; Before printing, the mobile Pad device runs a print pre-check algorithm to check the printer's online status, paper balance, and label template version compatibility. Only after the pre-check is passed can the print job be initiated. After printing, the system combines the printer's returned status code and the QR code's resolvability for dual verification to determine whether the label printing was valid and successful.

[0053] S64, print results are linked to an updated list; Only when print verification is successful will the mobile Pad device remove the corresponding EventID from the "Uninstallation to be Confirmed" list; if printing fails, the device is offline, or the verification is abnormal, the current uninstallation record will be retained in the list, allowing operators to retry printing. The retry process does not change the original EventID, but only accumulates the number of printing attempts to ensure that the data link is not disordered.

[0054] S7, Tool return and reuse. The process is as follows: S71, tool receiving chain verification; The newly printed dynamic label is affixed to the tool holder, and the tool carrying the new label is returned to the tool room. The tool room staff scans the code to read the dynamic label data and verifies the validity of CurrHash and the continuity of the PrevHash version chain to confirm that the tool's lifecycle data has not been tampered with and that the version flow is compliant.

[0055] S72, secondary machine lifespan extension and reuse; When the tool is requisitioned, the tool room will issue the tool to the production site. After the operator completes the tool placement and barcode scanning, the Pad will parse the reliable remaining life R in the new dynamic tag and write it into the life parameter position of the corresponding tool position in the CNC system as the initial remaining life reference for the tool to be processed again.

[0056] S73, Abnormal Tag Interception and Control; The system compares the label version information, the consistency of the previous and subsequent summaries, and the rationality of the remaining life value in real time. If an anomaly is detected, the system immediately determines that the label data is abnormal, prohibits the tool from being bound to the machine for processing, and achieves illegal data interception.

[0057] Abnormal situations include: tag version rollback, hash digest mismatch, and the trusted remaining lifetime obtained from parsing the current tag being greater than the sum of the trusted remaining lifetime retained at the end of the last test and the system's preset maximum positive correction threshold.

[0058] S8, Exception Handling and Verification Feedback. The process is as follows: S81, full-process exception interception and notification; For various abnormal scenarios that occur in the process, such as QR code parsing failure, Sign0 / CurrHash digest verification failure, OPC UA parameter writing failure, parameter readback comparison inconsistency, missing key fields of uninstallation record, printer offline abnormality, and broken label version chain, the Pad end outputs corresponding abnormal prompt information in real time and actively blocks the current process to avoid erroneous data solidification and abnormal processing.

[0059] S82, all anomaly audit logs are retained; All abnormal events are automatically written to the local audit log of the mobile Pad device. The log fields include: ToolUID (tool unique identifier), abnormal event type, timestamp of abnormal occurrence, operator on duty, machine number, abnormal code, and final processing result, so as to achieve full traceability and auditability.

[0060] S83, network interruption resumption and data fault tolerance; In response to short-term network outages and communication fluctuations, the system uses EventID and timestamp as unique indexes to execute a breakpoint resume mechanism. After the network is restored, it automatically re-uploads the unsynchronized data, strictly ensuring that tool life data is not repeatedly deducted, lost, or reversed, thus guaranteeing the accuracy and uniqueness of tool life data throughout its entire life cycle.

[0061] The above description is an explanation of the present invention and not a limitation thereof. Within the scope of protection of the present invention, any form of modification or equivalent substitution may be made. The scope of the present invention is defined in the claims.

Claims

1. A method for closed-loop management of CNC machine tool tool life and label printing control, characterized in that, Includes the following steps: S1, Tool chamber tool setting and initial label generation; S2, the machine tool scans the code upon boarding and automatically binds it; S3, the lifespan is accumulated in real time during the processing; S4, Remaining lifetime robust correction; S5, unloading record generation during model change and disassembly is linked with Pad; S6, dynamic label printing; S7, Tool return and reuse; S8, Exception Handling and Verification Feedback.

2. The method for closed-loop management of CNC machine tool tool life and label printing control according to claim 1, characterized in that, In step S1, the process of tool chamber tool setting and initial label generation is as follows: S11, obtain tool parameters and set life parameters; S12, standardizes the tool data; S13, Generate a unique identification code for the tool; S14, Construct the initial QR code data packet; S15, Initial labeling and securing of cutting tools.

3. The method for closed-loop management of CNC machine tool tool life and label printing control according to claim 2, characterized in that, In step S14, based on the generated tool unique identifier ToolUID, the full tool information is integrated to construct an initial QR code data package and complete the encapsulation. The complete tool information includes: tool number, tool name, length compensation value, radius compensation value, tool rated life, tool initial remaining life, tool setting personnel, tool setting date, and field summary Sign0; Wherein, the initial remaining tool life is the initial usable life value of the tool; The field summary Sign0 is used for integrity verification and anti-tampering verification of the initial QR code data packet.

4. The method for closed-loop management of CNC machine tool tool life and label printing control according to claim 3, characterized in that, The field digest Sign0 is obtained by hashing and encrypting the data of each field: tool number, tool name, length compensation value, radius compensation value, tool rated life, initial remaining tool life, tool setting personnel, and tool setting date.

5. The method for closed-loop management of CNC machine tool tool life and label printing control according to claim 3, characterized in that, In step S2, the process of scanning and automatically binding the barcode upon machine tool entry includes the following steps: S21, Tool positioning and QR code data integrity verification; The tool that has completed the initial calibration is assembled into the designated tool position on the machine tool. The QR code graphic of the initial label corresponding to the tool is scanned by the barcode scanning device. The QR code data packet is parsed, and data integrity and anti-tampering verification are performed by the field digest Sign0. S22, Real-time communication is established between the machine tool CNC system and the mobile Pad device; S23, Batch write tool standard parameters to tool positions; The parameters to be written include: length compensation value, radius compensation value, tool rated life, initial remaining tool life, tool name, and tool unique identifier ToolUID; S24, parameter readback, tool position verification summary comparison and verification.

6. The method for closed-loop management of CNC machine tool tool life and label printing control according to claim 5, characterized in that, In step S21, if the Sign0 summary information obtained by verification matches or the data version is normal, the QR code data packet is determined to be valid, and subsequent parameter writing operations are performed. If the Sign0 digest information obtained from the verification does not match or the data version is abnormal, the QR code data packet is determined to be invalid, subsequent parameter writing operations are prohibited, and the current binding process is terminated.

7. The method for closed-loop management of CNC machine tool tool life and label printing control according to claim 6, characterized in that, In step S24, the read-back values ​​are uniformly quantized and standardized according to a preset number of decimal places; then, the tool position verification digest CncSign is calculated using a hash algorithm. The calculated fields of the tool position verification summary CncSign include: tool position number, length compensation value, radius compensation value, tool rated life, tool initial remaining life, and tool unique identifier ToolUID; The calculated tool position verification summary CncSign is compared with the standard summary information pre-stored in the CNC system. If the comparison results are consistent, the parameter binding is deemed valid, and a successful binding prompt is output. If the comparison results are inconsistent, or there is a communication error or timeout, the tool position binding data is automatically rolled back, the abnormal parameters are cleared, and the corresponding binding failure reason is output, thus completing the closed-loop verification of the tool binding.

8. The method for closed-loop management of CNC machine tool tool life and label printing control according to claim 1, characterized in that, In S3, the real-time accumulation of lifespan during processing is as follows: S31, real-time acquisition of processing condition data; Real-time acquisition of machining process condition data, including at least spindle running time, spindle load, feed rate, material coefficient Km, tool type coefficient Kt, and alarm penalty coefficient Ka; S32, Calculation of tool life attenuation increment; Depending on whether the machine tool CNC system has a spindle load acquisition function, calculate the tool life decay increment for a single machining operation; S33, the original remaining tool life data is updated in real time; The tool's used life, L, is calculated in real-time and cumulatively. used-new =L used-old +ΔL, combined with the preset tool life rating L rated Real-time iterative calculation of the tool's current original remaining life R raw The calculation method is: R raw =L rated -L used-new ; L used-new The cumulative service life prior to this update cycle; L used-old For the new cumulative used lifetime of the current period, R raw To calculate the current original remaining tool life in real time, L rated This is the preset tool life rating.

9. The method for closed-loop management of CNC machine tool tool life and label printing control according to claim 8, characterized in that, In S32: For CNC machine tool systems equipped with spindle load acquisition capabilities, the formula for calculating the incremental decrease in equivalent tool life during a single machining operation is as follows: ΔL=Δt×[1+α·max(0,P / P0-1)+β·max(0,F / F0-1)]×Km×Kt×Ka; For CNC machine tool systems without spindle load acquisition capabilities, the formula for calculating the incremental decrease in equivalent tool life during a single machining operation is as follows: ΔL=Δt×Km×Kt Wherein, ΔL is the tool equivalent life decay increment for a single machining operation; Δt is the effective spindle running time within a single acquisition cycle; P0 is the preset spindle reference load; P is the real-time acquired spindle load; F0 is the preset reference feed rate; F is the real-time reference feed rate; α is the spindle load over-threshold loss weighting coefficient, which is a preset constant; β is the feed rate over-threshold loss weighting coefficient, which is a preset constant; Km is the machining material loss coefficient; Kt is the tool type loss coefficient; Ka is the alarm penalty coefficient; when there is no machine tool alarm, Ka=1; when there is a machine tool alarm, Ka>1.

10. The method for closed-loop management of CNC machine tool tool life and label printing control according to claim 8, characterized in that, In S4, the robust correction process for the original remaining lifetime is as follows: S41, Lifetime Abnormal Jump Detection and Fault Tolerance Handling; For the original remaining lifetime R raw Perform anomaly detection and pre-set the maximum theoretical tool life consumption threshold Q per cycle. max When the difference in remaining lifetime between two adjacent sampling periods exceeds the maximum theoretical consumption threshold Q max At that time, the current lifetime data was determined to be an abnormal jump; S42, Dynamic Exponential Smoothing Lifetime Correction; The original remaining lifetime R is calculated using a dynamic exponential smoothing algorithm. raw After smoothing correction, the reliable remaining lifetime is obtained. The correction formula is as follows: R=λ·R raw +(1-λ)·R last Where R is the reliable remaining lifetime after smoothing and fault tolerance processing in this cycle; λ is the dynamic smoothing coefficient, with a value range of 0 < λ ≤ 1; R raw Calculate the original remaining lifetime for the current cycle; R last The remaining lifetime is the trusted lifetime of the previous cycle; S43, Tool life warning and machining access control; Preset tool life warning threshold T warn With processing stop threshold T stop ; When the reliable remaining lifetime R < the warning threshold T warn When needed, remind others to prepare a knife; When the reliable remaining lifetime R ≤ the stopping threshold T stop If this occurs, it is prohibited to continue using the cutting tool to perform the machining operation.