CN117086175A - Deformation compensation control method and system for stamping die - Google Patents
Deformation compensation control method and system for stamping die Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 237
- 239000002131 composite material Substances 0.000 claims abstract description 106
- 238000013507 mapping Methods 0.000 claims abstract description 29
- 238000012098 association analyses Methods 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims description 21
- 238000004080 punching Methods 0.000 claims description 19
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- 238000005520 cutting process Methods 0.000 abstract description 3
- 230000000875 corresponding effect Effects 0.000 description 24
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The application provides a deformation compensation control method and a system of a stamping die, which relate to the technical field of stamping control, acquire stamping control parameters of each composite process layer of the stamping composite die, analyze the difference control parameters of every two adjacent process layers, determine deformation association indexes to establish mapping triplets, determine compensation control nodes to carry out real-time control parameter correction, generate compensation control parameters, and solve the technical problems that the prior art does not have a fine machining regulation and control mode, and the cutting surface for deformation compensation is not complete enough, so that defects exist in processing among hierarchical processes, the process machining accuracy is insufficient, and the quality of a final workpiece is influenced. The method is characterized in that differential control analysis and deformation association analysis are carried out on adjacent composite process layers, real-time control parameter retrieval and compensation processing are carried out on screening compensation control points, compensation analysis adjustment is carried out on multiple process layers, process control accuracy can be effectively improved, and stamping quality of workpieces is guaranteed.
Description
Technical Field
The application relates to the technical field of stamping control, in particular to a deformation compensation control method and system of a stamping die.
Background
The stamping is used as a main processing method for processing metal and non-metal plate parts, and aims at the strict stamping control of multiple procedures in the stamping of a composite stamping die, so that the influence on the whole stamping effect is avoided. At present, the prior art does not have a fine processing regulation and control mode based on real-time process processing monitoring and intervention of professionals, combination algorithm and the like, and is not complete enough to the cutting surface of deformation compensation, so that defects exist in the processing among hierarchical processes, and the process processing precision is insufficient to influence the quality of a final workpiece.
Disclosure of Invention
The application provides a deformation compensation control method and a deformation compensation control system for a stamping die, which are used for solving the technical problems that in the prior art, a fine machining regulation mode is not provided, a cutting surface for deformation compensation is not complete enough, defects exist in processing among hierarchical processes, the process machining accuracy is insufficient, and the quality of a final workpiece is affected.
In view of the above problems, the present application provides a deformation compensation control method and system for a stamping die.
In a first aspect, the present application provides a deformation compensation control method for a stamping die, the method comprising:
obtaining structural information of a stamping composite die, and determining a composite process layer according to the structural information, wherein the composite process layer at least comprises two stamping processes;
determining stamping control parameters corresponding to each composite process layer in the composite process layers, wherein the stamping control parameters comprise electric variable control parameters of the stamping composite die and component position control parameters of the stamping composite die;
identifying the composite process layers according to the stamping control parameters, and obtaining difference control parameters between every two adjacent process layers;
performing workpiece deformation association analysis on the difference control parameters, outputting deformation association indexes of every two adjacent process layers, and establishing mapping triples by the previous process layer, the subsequent process layer and the corresponding deformation association indexes;
judging each composite process layer by using the mapping triples, and determining a compensation control node, wherein the compensation control node is a subsequent process layer in the triples corresponding to the deformation association indexes which are larger than or equal to the preset deformation association indexes;
when the real-time control parameters of the compensation control nodes are obtained through monitoring, the difference control parameters and the real-time control parameters are compared, compensation control parameters are generated, and the stamping compound die is controlled through the compensation control parameters.
In a second aspect, the present application provides a deformation compensation control system for a stamping die, the system comprising:
the composite process layer determining module is used for obtaining structural information of the stamping composite die and determining a composite process layer according to the structural information, wherein the composite process layer at least comprises two stamping processes;
the stamping control parameter determining module is used for determining stamping control parameters corresponding to each composite process layer in the composite process layers, wherein the stamping control parameters comprise electric variable control parameters of the stamping composite die and component position control parameters of the stamping composite die;
the difference control parameter acquisition module is used for identifying the composite process layers according to the stamping control parameters and acquiring the difference control parameters between every two adjacent process layers;
the deformation association analysis module is used for carrying out workpiece deformation association analysis on the difference control parameters, outputting deformation association indexes of every two adjacent process layers, and establishing mapping triples by the previous process layers, the subsequent process layers and the corresponding deformation association indexes;
the compensation control node determining module is used for judging each composite process layer by the mapping triples to determine a compensation control node, wherein the compensation control node is a post process layer in the triples corresponding to the deformation association indexes which are larger than or equal to the preset deformation association indexes;
and the compensation control parameter generation module is used for comparing the difference control parameter with the real-time control parameter to generate a compensation control parameter when the real-time control parameter of the compensation control node is obtained through monitoring, and controlling the stamping composite die through the compensation control parameter.
One or more technical schemes provided by the application have at least the following technical effects or advantages:
according to the deformation compensation control method for the stamping die, structural information of the stamping composite die is obtained, composite process layers are determined, stamping control parameters corresponding to each composite process layer are determined, the stamping composite die comprises electric variable control parameters of the stamping composite die and component position control parameters of the stamping composite die, difference control parameters between every two adjacent process layers are analyzed, workpiece deformation association analysis is carried out, deformation association indexes of every two adjacent process layers are output, mapping triplets based on the previous process layer, the later process layer and the corresponding deformation association indexes are established, a compensation control node is determined, when the real-time control parameters of the compensation control node are obtained through monitoring, the difference control parameters and the real-time control parameters are compared, the stamping composite die is controlled, and the technical problems that in the prior art, a fine machining regulation mode is not available, a cut-in surface for deformation compensation is not complete, defects exist in processing of hierarchical processes, working accuracy of the processes is insufficient, and final workpiece quality is affected are solved. The method is characterized in that differential control analysis and deformation association analysis are carried out on adjacent composite process layers, real-time control parameter retrieval and compensation processing are carried out on screening compensation control points, compensation analysis adjustment is carried out on multiple process layers, process control accuracy can be effectively improved, and stamping quality of workpieces is guaranteed.
Drawings
FIG. 1 is a schematic flow chart of a deformation compensation control method of a stamping die;
FIG. 2 is a schematic diagram showing structural connection in a deformation compensation control method of a stamping die;
fig. 3 is a schematic structural diagram of a deformation compensation control system of a stamping die.
Reference numerals illustrate: the device comprises a composite process layer determining module 11, a stamping control parameter determining module 12, a difference control parameter acquiring module 13, a deformation association analyzing module 14, a compensation control node determining module 15 and a compensation control parameter generating module 16.
Detailed Description
The application provides a deformation compensation control method and a system for a stamping die, which are used for obtaining stamping control parameters of each composite process layer of the stamping composite die, analyzing difference control parameters between every two adjacent process layers, carrying out workpiece deformation association analysis, outputting deformation association indexes and establishing mapping triplets, determining compensation control nodes and carrying out real-time control parameter correction to generate compensation control parameters, and controlling the stamping composite die, so as to solve the technical problems that a fine machining regulation mode is not provided in the prior art, a cutting-in surface for deformation compensation is not complete enough, defects exist in processing among hierarchical processes, the process machining accuracy is insufficient, and the quality of a final workpiece is affected.
Example 1
As shown in fig. 1 and 2, the present application provides a deformation compensation control method for a stamping die, where the method includes:
s1: obtaining structural information of a stamping composite die, and determining a composite process layer according to the structural information, wherein the composite process layer at least comprises two stamping processes;
the stamping is used as a main processing method for processing metal and non-metal plate parts, and aims at the strict stamping control of multiple procedures in the stamping of a composite stamping die, so that the influence on the whole stamping effect is avoided. According to the deformation compensation method of the stamping die, provided by the application, the difference control analysis and the deformation association analysis are carried out on the adjacent composite process layers, the compensation control points are screened to carry out real-time control parameter retrieval and compensation treatment, and the compensation analysis adjustment is carried out on the multi-process layer by layer, so that the process control accuracy can be effectively improved, and the stamping quality of workpieces is ensured.
The stamping composite die is a die which can simultaneously perform multiple working procedures on the same part of the stamping die aiming at one working stroke of a press machine, and a stamping workpiece has high precision. The structure information of the stamping composite die is acquired, for example, a plurality of structural components such as blanking female dies, punching female dies, pushing rods and the like exist for the positive composite film. And determining a structure adaptation procedure based on the structure information, and arranging procedures in sequence based on the punching sequence to obtain the composite procedure layer. The composite process layer has at least two stamping processes, such as sequential distribution of a plurality of processes of punching, blanking, deep drawing, shaping and the like, and is a processing standard of workpiece stamping.
S2: determining stamping control parameters corresponding to each composite process layer in the composite process layers, wherein the stamping control parameters comprise electric variable control parameters of the stamping composite die and component position control parameters of the stamping composite die;
s3: identifying the composite process layers according to the stamping control parameters, and obtaining difference control parameters between every two adjacent process layers;
determining the electrical variable control parameters of the stamping composite die of the process layers, namely numerical control parameters, such as motor control parameters, pressure relay parameters and the like, according to the composite process layers; and determining component position control parameters of the stamping composite die of each process layer, wherein the component position control parameters comprise the placement position of a workpiece and the stamping position of the workpiece, the composite process layer, the electric variable control parameters and the component position control parameters are mapped and correlated to generate the stamping control parameters, and the stamping control parameters are control standards for stamping the workpiece based on the composite stamping die.
Furthermore, the extraction of the adjacent process layers is performed based on the composite process layer, namely, the continuous pre-process layer and post-process layer are matched and the stamping control parameters corresponding to the process layers are extracted, the stamping control parameters of the adjacent process layers are mapped by the electrical variable control parameters and the component position control parameters, and differential metering is performed for the same stamping control parameters corresponding to the mapping. For example, for the point variable control parameters, the difference calculation may be directly performed; for the component position control parameters, the coordinate system conversion distribution of the component control positions can be performed on the previous process and the subsequent process by establishing a standard coordinate system, the position control difference is determined based on the coordinate deviation, and the difference control parameters of the previous process and the subsequent process are obtained. And similarly, extracting the stamping control parameters and differentially metering the stamping control parameters for any two adjacent process layers to obtain the differential control parameters between every two adjacent process layers. The difference control parameter is a reference for workpiece deformation analysis.
S4: performing workpiece deformation association analysis on the difference control parameters, outputting deformation association indexes of every two adjacent process layers, and establishing mapping triples by the previous process layer, the subsequent process layer and the corresponding deformation association indexes;
wherein, carrying out the deformation association analysis of the workpiece on the difference control parameters, and outputting deformation association indexes of every two adjacent process layers, and the application S4 further comprises:
s41: setting a deformation association channel, wherein the deformation association channel comprises a first channel and a second channel, data interaction is realized between the first channel and the second channel, the first channel is an association identification channel of an electric variable control parameter, and the second channel is an association identification channel of a component position control parameter;
s42: inputting the difference control parameters into the deformation association channel to obtain an electric variable-deformation association index and a position-deformation association index;
s43: and carrying out weight calculation according to the electric variable-deformation association index and the position-deformation association index, and outputting deformation association indexes of every two adjacent process layers.
Setting a basic framework of the deformation association channel, namely the first channel and the second channel which are configured in parallel, wherein the first channel is an association identification channel of an electric variable control parameter, the second channel is an association identification channel of the component position control parameter, and the first channel and the second channel can perform data interaction. The following is an exemplary channel member manner provided in the embodiments of the present application, and uses the stamping processing of the stamping composite die as an index, and performs data retrieval in the industrial internet to obtain sample stamping control data, including sample stamping control parameters, sample electrical variable deformation association indexes and sample position deformation association indexes. Mapping and correlating the sample electric variable stamping control parameters in the sample stamping control parameters with the sample electric variable deformation association indexes, determining a plurality of mapping sequences as training data, and generating the first channel meeting the preset accuracy rate by performing neural network training supervision training and verification; and similarly, training the second channel based on the sample position stamping control parameters and the sample position deformation association indexes in the sample stamping control parameters.
Inputting the difference control parameters of every two adjacent process layers into the deformation association channel, and analyzing deformation indexes of the electric variable control parameters based on the first channel to obtain deformation indexes such as stretching rate, deformation degree and the like with electric variable control influence as the electric variable-deformation association indexes; and carrying out deformation influence analysis on the member position control parameters based on the second channel, and determining deformation indexes with position influence, such as deformation positions, workpiece shapes, sizes and the like, as the position-deformation association indexes.
Further, performing index weight configuration based on the electric variable-deformation association index and the position-deformation association index, wherein index weighting is performed by taking deformation influence degree of the index as a standard, the sum of the weight configuration is 1, and the weighted electric variable-deformation association index and the position-deformation association index are integrated to serve as the deformation association index of two adjacent process layers. Further, with the triples as the characterization format, mapping combinations of every two adjacent process layers and corresponding deformation association indexes, namely, pre-process layer-post-process layer-deformation association indexes are performed as mapping triples corresponding to the two adjacent process layers. The definition and intuitiveness of data representation can be improved, and a foundation is tamped for deformation association analysis of subsequent hierarchical procedures.
S5: judging each composite process layer by using the mapping triples, and determining a compensation control node, wherein the compensation control node is a subsequent process layer in the triples corresponding to the deformation association indexes which are larger than or equal to the preset deformation association indexes;
and traversing each adjacent upper working procedure layer and lower working procedure layer according to the mapping triples, taking the upper working procedure layer as a reference, carrying out standardized stamping deformation acquisition of the lower working procedure layer, and taking the standardized stamping deformation acquisition as the preset deformation association index, wherein the preset deformation association index is a critical standard for measuring the control energy efficiency of the working procedure layer and can be directly identified and determined based on work orders of batch workpieces.
And based on the mapping triples, identifying the correction of the deformation association degree of the adjacent process layers in the composite process layers and the corresponding preset deformation association degree, and if the deformation association index is greater than or equal to the preset deformation association index, indicating that the stamping control overrun condition exists, and taking the subsequent process layers in the adjacent process layers as the compensation control nodes as irreversible control results. And traversing each mapping triplet, respectively performing proofreading and judging corresponding to a preset deformation association index, screening a subsequent process layer in the triplet corresponding to the deformation association index, and adding the subsequent process layer into the compensation control node. The compensation control node is a working procedure layer with adjustment necessity, and punching control adjustment is carried out on the compensation control node so as to ensure the integral punching effect of the workpiece.
S6: when the real-time control parameters of the compensation control nodes are obtained through monitoring, the difference control parameters and the real-time control parameters are compared, compensation control parameters are generated, and the stamping compound die is controlled through the compensation control parameters.
Wherein, the application S6 further comprises:
s61a: the deformation association channel is in communication connection with a compensation control module, the compensation control module comprises an electric variable compensation control sub-module and a position compensation control sub-module, wherein the electric variable compensation control sub-module is connected with a punching numerical control system terminal, and the position compensation control sub-module is connected with a mould monitoring system terminal;
s62a: acquiring compensation control parameters corresponding to a current compensation control node, wherein the compensation control parameters comprise electric variable compensation control parameters and position compensation control parameters;
s63a: the electric variable compensation control submodule is connected with the punching numerical control system terminal, and compensation is performed based on the electric variable compensation control parameters;
s64a: and the position compensation control submodule is connected with the die monitoring system terminal, and compensation is performed based on the position compensation control parameters.
Wherein, the application also has S62a, including:
s621a: performing piecewise iterative optimization control on the electric variable compensation control parameter and the position compensation control parameter until the difference value between the difference control parameter and the real-time control parameter is minimized;
the process of each round of iteration comprises the steps of obtaining optimized position compensation control parameters by fixing the electric variable compensation control parameters and obtaining optimized electric variable compensation control parameters by fixing the optimized position compensation control parameters;
s622a: and outputting the optimized position compensation control parameters and the optimized electric variable compensation control parameters as the optimized compensation control parameters.
The compensation control module is a functional module for performing parameter control compensation on the compensation control node and comprises an electric variable compensation control sub-module and a position compensation control sub-module, wherein the electric variable compensation control sub-module and the position compensation control sub-module are peer sub-modules which are configured in parallel, differential metering of control parameters is used as a bottom execution logic, the electric variable compensation control sub-module is connected with the punching numerical control system terminal, information interaction is performed on the punching numerical control system terminal and the electric variable compensation control sub-module, and flow of electric variable control parameters and electric variable feedback compensation control are performed, and the punching numerical control system terminal is a general control system for punching electric variable management. And the position compensation control sub-module is connected with the die monitoring system terminal, and is used for interacting the acquired position control parameters of the die monitoring and carrying out position feedback compensation control.
Establishing communication connection between the deformation association channel and the compensation control module, transferring deformation association indexes and the difference control parameter flows output by the deformation association channel to the compensation control module, and monitoring and interactively calling real-time electric variable control parameters of the compensation control node based on the punching numerical control system terminal connected by the electric variable compensation control sub-module; and monitoring and interactively calling real-time position control parameters of the compensation control node based on the die monitoring system terminal connected with the position compensation control submodule, and taking the real-time electric variable control parameters and the real-time position control parameters as the real-time control parameters.
And in the electric variable compensation control sub-module and the position compensation control sub-module, mapping and proofreading the difference control parameter and the real-time control parameter by taking the deformation association index as a reference to obtain a difference value of the mapping parameter. And determining the parameter adjustment direction and adjustment scale as compensation control parameters of the current compensation control node. Because the electric variable compensation control parameters and the position compensation control parameters have the mutual correlation influence, the parameters complement each other, the accuracy of the compensation control parameters is insufficient, and the iterative optimization is further carried out on the compensation control parameters.
Specifically, the compensation control parameters include the electric variable compensation control parameters and the position compensation control parameters, the electric variable compensation control parameters are fixed, and the position compensation control parameters mapped are adjusted. The parameter adjustment interval is set, random disturbance is performed on the position compensation control parameters in the parameter adjustment interval, multiple groups of adjustment position compensation parameters are determined and corrected, and the current optimal position compensation parameters are selected. And fixing the current optimal position compensation parameter, and optimizing the electric variable compensation control parameter on the basis, wherein the specific parameter optimization method is the same, and one round of iteration is completed. And performing mapping difference calculation on the current optimal electric variable compensation control parameter, the position compensation control parameter and the difference control parameter.
And similarly, taking the current optimal position compensation control parameter and the current optimal electric variable compensation control parameter as references, carrying out parameter fixing and optimizing treatment on the current optimal position compensation control parameter in a segmented manner, and carrying out mapping difference value calculation with the difference control parameter again after one round of iteration is completed; repeating the steps to perform segmented iterative optimization until the maximum iterative times are met, checking the mapping difference value calculation result determined by each round of optimization iteration, selecting the compensation control parameter corresponding to the smallest difference value, determining the optimized electric variable compensation control parameter and the optimized position compensation control parameter, and outputting the electric variable compensation control parameter and the optimized position compensation control parameter as the finally determined compensation control parameters. And aiming at the synergistic effect among the control parameters, carrying out subsection optimization so as to further improve the control accuracy of the compensation control parameters.
Further, the electric variable compensation control submodule is connected with the punching numerical control system terminal, and the output electric variable compensation control parameters are transmitted to the punching numerical control system terminal for feedback control and tuning. And similarly, the position compensation submodule is connected with the die monitoring system terminal, and the output position compensation control parameters are transmitted to the die monitoring system terminal for feedback control and optimization so as to ensure that the control effect of the real-time control parameters is optimal.
Wherein, control the said punching press compound die with the said compensation control parameter, the application S6 also includes:
s61b: when the compensation control parameters are used for controlling the stamping composite die, recording the resilience force of the workpiece during stamping, obtaining compensation resilience force, and when the compensation resilience force is larger than a preset resilience force, generating compensation feedback control parameters;
s62b: and carrying out feedback optimization on the compensation control parameters according to the compensation feedback control parameters.
When the stamping control of the stamping composite die is carried out, the deformation process is accompanied by plastic deformation and elastic deformation, and the final stamping control effect is the plastic deformation degree. And recording the resilience force of the workpiece during stamping based on the compensation control parameters when the stamping composite die is controlled, namely, the elastic deformation information existing in the deformation process, and taking the elastic deformation degree as the compensation resilience force. The preset resilience force is set, i.e., a critical resilience force within a normal range, which is custom set by those skilled in the art. And correcting the compensation resilience force and the preset resilience force, when the compensation resilience force is larger than the preset resilience force, indicating that the resilience degree is overlarge, and generating the compensation feedback control parameter based on the difference value of the compensation resilience force and the preset resilience force, wherein the plastic deformation degree is insufficient. And based on the compensation feedback control parameters, carrying out feedback optimization on the compensation control parameters so as to eliminate stamping control influence caused by deformation factors.
Wherein, the application also exists in S7, which comprises:
s71: when the previous process layer is finished and the next process layer is finished, acquiring the die position data of the current process layer, wherein the die position data comprise the position data of each component;
s72: carrying out structural coaxiality identification according to the mold position data, and outputting mold coaxiality;
s73: and generating a starting instruction of a next process layer when the coaxiality of the die meets the preset coaxiality of the die, and the like until each process in the composite process layer is finished.
Wherein, the application also exists in S74, including:
s741: when the coaxiality of the die does not meet the preset coaxiality of the die, generating a coaxiality compensation parameter;
s742: and after coaxially compensating the current working procedure layer according to the coaxial compensation parameter, controlling the stamping composite die according to the compensation control parameter.
When each composite process layer in the composite process layers is processed, the process is ensured to be in the same pressure center, otherwise, workpiece deviation is caused. And when the previous process layer is finished and the next process layer is finished, identifying the position data of each component in the stamping composite die for the current process layer as the die position data. And carrying out structural coaxiality recognition based on the mold position data, namely, respectively carrying out recognition judgment on each component according to whether the structural coaxiality is in a spatial coaxiality position with the component position in the previous process, ensuring recognition completeness and obtaining the mold coaxiality.
And further setting the coaxiality of the preset die, namely, the pressure center deviation in the work piece processing allowable range, and carrying out custom setting by a person skilled in the art in combination with the processing precision requirement. Checking the coaxiality of the die and the preset die, generating a starting instruction of a next process layer, namely a starting instruction of process processing, when the coaxiality of the die meets the preset die coaxiality, and executing processing control of the next process layer; when the coaxiality of the die does not meet the preset coaxiality of the die, workpiece machining deviation is caused, the coaxiality compensation parameter is generated based on the difference value between the coaxiality of the die and the coaxiality of the preset die, coaxiality compensation is performed on the current working procedure layer, and the fact that the machining of the current working procedure layer and the previous working procedure layer are in the same pressure center is ensured. And further carrying out processing control on the stamping composite die according to the compensation control parameters. Based on the steps, the composite process layers are recursively deduced based on the process sequence, and the coaxiality recognition and compensation of the die are sequentially carried out, so that the workpiece machining deviation can be effectively avoided.
The deformation compensation control method of the stamping die provided by the application has the following technical effects:
1. the method comprises the steps of carrying out differential control analysis and deformation association analysis on adjacent composite process layers, screening compensation control points, carrying out real-time control parameter retrieval, determining differential control parameters and carrying out deformation association analysis, accurately locking process parameters with regulatory necessity, establishing mapping triplets to ensure definition and intuitiveness of index information, carrying out compensation analysis adjustment on multiple process layers, effectively improving process control accuracy and guaranteeing stamping quality of workpieces.
2. The electric variable stamping control parameters and the position stamping control parameters are used as main compensation dimensions, coaxiality and stamping resilience force are used as subordinate compensation dimensions, stamping compensation adjustment is performed, the completeness of stamping regulation is improved, and the machining precision of the working procedures is guaranteed and the machining quality of the workpiece is improved by performing fine machining regulation among hierarchical working procedures.
Example two
Based on the same inventive concept as the deformation compensation control method of a press mold in the foregoing embodiments, as shown in fig. 3, the present application provides a deformation compensation control system of a press mold, the system comprising:
the composite process layer determining module 11 is used for obtaining structural information of a stamping composite die, and determining a composite process layer according to the structural information, wherein the composite process layer at least comprises two stamping processes;
a stamping control parameter determining module 12, where the stamping control parameter determining module 12 is configured to determine stamping control parameters corresponding to each of the composite process layers, where the stamping control parameters include an electrical variable control parameter of the stamping composite mold and a component position control parameter of the stamping composite mold;
the difference control parameter acquisition module 13 is used for identifying the composite process layers according to the stamping control parameters and acquiring the difference control parameters between every two adjacent process layers;
the deformation association analysis module 14 is configured to perform workpiece deformation association analysis on the difference control parameters, output deformation association indexes of each two adjacent process layers, and establish mapping triples according to the previous process layer, the subsequent process layer and the corresponding deformation association indexes;
the compensation control node determining module 15 is configured to determine each composite process layer by using the mapping triples, and determine a compensation control node, where the compensation control node is a subsequent process layer in a triples corresponding to a deformation association index greater than or equal to a preset deformation association index;
and the compensation control parameter generation module 16 is used for comparing the difference control parameter with the real-time control parameter to generate a compensation control parameter when the real-time control parameter of the compensation control node is obtained by monitoring, and controlling the stamping compound die by the compensation control parameter.
Wherein the system further comprises:
the device comprises a die position data acquisition module, a control module and a control module, wherein the die position data acquisition module is used for acquiring die position data of a current working procedure layer when a previous working procedure layer is completed and a next working procedure layer is entered, and the die position data comprises position data of each component;
the mould coaxiality output module is used for carrying out structure coaxiality identification according to the mould position data and outputting mould coaxiality;
and the procedure starting module is used for generating a starting instruction of a next procedure layer when the coaxiality of the die meets the preset coaxiality of the die, and the like until each procedure in the composite procedure layer is finished.
Wherein the system further comprises:
the coaxial compensation parameter generation module is used for generating coaxial compensation parameters when the coaxiality of the die does not meet the preset coaxiality of the die;
and the stamping control module is used for controlling the stamping composite die according to the compensation control parameter after coaxially compensating the current process layer according to the coaxial compensation parameter.
Wherein the deformation association analysis module 14 further comprises:
the channel setting module is used for setting a deformation association channel, wherein the deformation association channel comprises a first channel and a second channel, data between the first channel and the second channel can be interacted, the first channel is an association identification channel of an electric variable control parameter, and the second channel is an association identification channel of a component position control parameter;
the association index acquisition module is used for inputting the deformation association channel into the difference control parameter to obtain an electric variable-deformation association index and a position-deformation association index;
and the weight calculation module is used for carrying out weight calculation according to the electric variable-deformation association index and the position-deformation association index and outputting deformation association indexes of every two adjacent process layers.
Wherein the compensation control parameter generation module 16 further comprises:
the connecting module is used for connecting the deformation association channel with the compensation control module in a communication way, the compensation control module comprises an electric variable compensation control sub-module and a position compensation control sub-module, wherein the electric variable compensation control sub-module is connected with a punching numerical control system terminal, and the position compensation control sub-module is connected with a die monitoring system terminal;
the parameter acquisition module is used for acquiring compensation control parameters corresponding to the current compensation control node, wherein the compensation control parameters comprise electric variable compensation control parameters and position compensation control parameters;
the electric variable compensation module is used for connecting the electric variable compensation control submodule with the punching numerical control system terminal and compensating based on the electric variable compensation control parameters;
and the position compensation module is used for connecting the position compensation control submodule with the mould monitoring system terminal and compensating based on the position compensation control parameters.
Wherein the system further comprises:
the iterative optimization module is used for carrying out segmented iterative optimization control on the electric variable compensation control parameter and the position compensation control parameter until the difference value between the difference control parameter and the real-time control parameter is minimized;
the process of each round of iteration comprises the steps of obtaining optimized position compensation control parameters by fixing the electric variable compensation control parameters and obtaining optimized electric variable compensation control parameters by fixing the optimized position compensation control parameters;
and the optimized parameter output module is used for outputting the optimized position compensation control parameter and the optimized electric variable compensation control parameter as the optimized compensation control parameter.
Wherein the compensation control parameter generation module 16 further comprises:
the feedback control parameter generation module is used for recording the resilience force of the workpiece during stamping when the compensation control parameter is used for controlling the stamping composite die, obtaining the compensation resilience force, and generating the compensation feedback control parameter when the compensation resilience force is larger than the preset resilience force;
and the feedback optimization module is used for performing feedback optimization on the compensation control parameters according to the compensation feedback control parameters.
The foregoing detailed description of a deformation compensation control method for a stamping die will be clear to those skilled in the art, and the deformation compensation control method and system for a stamping die in this embodiment are relatively simple in description, and the relevant points refer to the description of the method section for the device disclosed in the embodiment, because the device corresponds to the method disclosed in the embodiment.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A deformation compensation control method of a stamping die, the method comprising:
obtaining structural information of a stamping composite die, and determining a composite process layer according to the structural information, wherein the composite process layer at least comprises two stamping processes;
determining stamping control parameters corresponding to each composite process layer in the composite process layers, wherein the stamping control parameters comprise electric variable control parameters of the stamping composite die and component position control parameters of the stamping composite die;
identifying the composite process layers according to the stamping control parameters, and obtaining difference control parameters between every two adjacent process layers;
performing workpiece deformation association analysis on the difference control parameters, outputting deformation association indexes of every two adjacent process layers, and establishing mapping triples by the previous process layer, the subsequent process layer and the corresponding deformation association indexes;
judging each composite process layer by using the mapping triples, and determining a compensation control node, wherein the compensation control node is a subsequent process layer in the triples corresponding to the deformation association indexes which are larger than or equal to the preset deformation association indexes;
when the real-time control parameters of the compensation control nodes are obtained through monitoring, the difference control parameters and the real-time control parameters are compared, compensation control parameters are generated, and the stamping compound die is controlled through the compensation control parameters.
2. The method of claim 1, wherein the method further comprises:
when the previous process layer is finished and the next process layer is finished, acquiring the die position data of the current process layer, wherein the die position data comprise the position data of each component;
carrying out structural coaxiality identification according to the mold position data, and outputting mold coaxiality;
and generating a starting instruction of a next process layer when the coaxiality of the die meets the preset coaxiality of the die, and the like until each process in the composite process layer is finished.
3. The method of claim 2, wherein the method further comprises:
when the coaxiality of the die does not meet the preset coaxiality of the die, generating a coaxiality compensation parameter;
and after coaxially compensating the current working procedure layer according to the coaxial compensation parameter, controlling the stamping composite die according to the compensation control parameter.
4. The method of claim 1, wherein the workpiece deformation association analysis is performed on the differential control parameters to output deformation association indexes for each two adjacent process layers, the method comprising:
setting a deformation association channel, wherein the deformation association channel comprises a first channel and a second channel, data interaction is realized between the first channel and the second channel, the first channel is an association identification channel of an electric variable control parameter, and the second channel is an association identification channel of a component position control parameter;
inputting the difference control parameters into the deformation association channel to obtain an electric variable-deformation association index and a position-deformation association index;
and carrying out weight calculation according to the electric variable-deformation association index and the position-deformation association index, and outputting deformation association indexes of every two adjacent process layers.
5. The method of claim 4, wherein the method further comprises:
the deformation association channel is in communication connection with a compensation control module, the compensation control module comprises an electric variable compensation control sub-module and a position compensation control sub-module, wherein the electric variable compensation control sub-module is connected with a punching numerical control system terminal, and the position compensation control sub-module is connected with a mould monitoring system terminal;
acquiring compensation control parameters corresponding to a current compensation control node, wherein the compensation control parameters comprise electric variable compensation control parameters and position compensation control parameters;
the electric variable compensation control submodule is connected with the punching numerical control system terminal, and compensation is performed based on the electric variable compensation control parameters;
and the position compensation control submodule is connected with the die monitoring system terminal, and compensation is performed based on the position compensation control parameters.
6. The method of claim 5, wherein the method further comprises:
performing piecewise iterative optimization control on the electric variable compensation control parameter and the position compensation control parameter until the difference value between the difference control parameter and the real-time control parameter is minimized;
the process of each round of iteration comprises the steps of obtaining optimized position compensation control parameters by fixing the electric variable compensation control parameters and obtaining optimized electric variable compensation control parameters by fixing the optimized position compensation control parameters;
and outputting the optimized position compensation control parameters and the optimized electric variable compensation control parameters as the optimized compensation control parameters.
7. The method of claim 1, wherein the stamping compound die is controlled with the compensation control parameter, the method further comprising:
when the compensation control parameters are used for controlling the stamping composite die, recording the resilience force of the workpiece during stamping, obtaining compensation resilience force, and when the compensation resilience force is larger than a preset resilience force, generating compensation feedback control parameters;
and carrying out feedback optimization on the compensation control parameters according to the compensation feedback control parameters.
8. A deformation compensation control system for a stamping die, the system comprising:
the composite process layer determining module is used for obtaining structural information of the stamping composite die and determining a composite process layer according to the structural information, wherein the composite process layer at least comprises two stamping processes;
the stamping control parameter determining module is used for determining stamping control parameters corresponding to each composite process layer in the composite process layers, wherein the stamping control parameters comprise electric variable control parameters of the stamping composite die and component position control parameters of the stamping composite die;
the difference control parameter acquisition module is used for identifying the composite process layers according to the stamping control parameters and acquiring the difference control parameters between every two adjacent process layers;
the deformation association analysis module is used for carrying out workpiece deformation association analysis on the difference control parameters, outputting deformation association indexes of every two adjacent process layers, and establishing mapping triples by the previous process layers, the subsequent process layers and the corresponding deformation association indexes;
the compensation control node determining module is used for judging each composite process layer by the mapping triples to determine a compensation control node, wherein the compensation control node is a post process layer in the triples corresponding to the deformation association indexes which are larger than or equal to the preset deformation association indexes;
and the compensation control parameter generation module is used for comparing the difference control parameter with the real-time control parameter to generate a compensation control parameter when the real-time control parameter of the compensation control node is obtained through monitoring, and controlling the stamping composite die through the compensation control parameter.
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