Bending process verification method and system based on multi-source parameter linkage
The bending process verification system with multi-source parameter linkage automatically matches and verifies the material and equipment parameters of sheet metal parts, solving the problems of manual operation errors and inconsistencies in traditional processes, and achieving efficient and accurate process verification and risk warning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANXI TAIZHONG ENG MASCH CO LTD
- Filing Date
- 2025-12-08
- Publication Date
- 2026-04-24
AI Technical Summary
The traditional sheet metal bending process parameter calculation and verification process relies on manual operation, which has theoretical deviations and differences in human experience. This leads to insufficient equipment selection, cracking of parts edges, and inconsistent verification results, making it difficult to meet the efficiency requirements of multi-variety, small-batch production.
A bending process verification system based on multi-source parameter linkage is adopted, including a drawing information acquisition module, an automatic parameter calling module, a parameter analysis and calculation module, a bending process quadruple verification module, and a verification result output module. It automatically matches material and equipment parameters through built-in functions, and performs preset mathematical formula calculations and quadruple verification.
It significantly reduced process analysis time, improved verification efficiency, ensured the accuracy of key decisions and the coverage of process risk warnings, and achieved standardized operation of process verification.
Smart Images
Figure CN121920800A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of sheet metal bending technology, and more specifically to a bending process verification method and system based on multi-source parameter linkage. Background Technology
[0002] In the field of sheet metal processing, bending is a core forming process. The accuracy and completeness of its process parameters directly determine the forming quality, production efficiency, and equipment safety. It is widely used in industries such as construction machinery, automobile manufacturing, and aerospace to meet the processing needs of metal sheets. Currently, the traditional bending process parameter calculation and verification process relies heavily on manual step-by-step operations. The overall technical framework revolves around four independent stages: "manual retrieval - segmented calculation - cross-verification - experience-based judgment".
[0003] In traditional processes, staff need to switch back and forth between different data carriers and calculation steps. For example, after retrieving material parameters, they need to manually record them and then switch to the calculation table to substitute the formula. When verifying, they need to refer to the equipment manual again. This makes it difficult to meet the needs of "rapid process preparation" in mass production, especially in scenarios with multiple varieties and small batches, where the efficiency bottleneck is more prominent.
[0004] On the one hand, the calculation process suffers from theoretical deviations, failing to incorporate correction coefficients based on actual production conditions. This results in theoretically calculated bending forces generally being lower than the actual required values, potentially leading to inadequate equipment selection. On the other hand, traditional verification relies on manual experience and judgment, which carries the risk of missing limit parameters. For example, some staff may overlook the comparison between the minimum overlap and the bending line distance, causing edge cracking during bending. Furthermore, different staff members have different judgment standards. For instance, when assessing whether the equipment's specific pressure meets the requirements, experienced personnel will leave a certain safety margin, while novices may simply judge based on "the equipment's specific pressure being slightly greater than the calculated specific pressure," leading to poor consistency in verification results. Summary of the Invention
[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a bending process verification system based on multi-source parameter linkage to solve the problems existing in the background art.
[0006] This invention provides the following technical solution: a bending process verification system based on multi-source parameter linkage, comprising: a drawing information acquisition module, a parameter automatic call module, a parameter analysis and calculation module, a bending process quadruple verification module, and a verification result output module; The drawing information acquisition module obtains the design parameters of the bending parts through the design drawings, receives the experience values input by the user, and transmits the acquired parameters to the parameter automatic recall module. The automatic parameter calling module includes a primary parameter calling layer and a secondary parameter calling layer. Based on the parameters transmitted by the drawing information acquisition module, the automatic parameter calling is completed through the built-in material mapping function and the built-in equipment mapping function, respectively. The parameter analysis and calculation module calculates key process parameters using preset mathematical formulas based on the output parameters of the drawing information acquisition module and the call results of a first parameter call layer. The bending process quadruple verification module performs quadruple verification on the bending process based on the key process parameters output by the parameter analysis and calculation module and the call results of the secondary parameter call layer, and transmits the verification results to the verification result output module. The verification result output module outputs process guidance data based on the verification results of the quadruple verification module. The process guidance data includes the lower die size, upper die size, compatible workstation number, and the feasibility of automated bending.
[0007] Preferably, the specific content of the drawing information acquisition module is as follows: The design parameters of the bent parts are obtained by design drawings. The design parameters include: material, plate thickness, single weight of part, bending line length and inner radius value of bending part in the design drawings of the bent parts. The system receives user-inputted experience values, which represent preset values selected based on different plate thicknesses.
[0008] Preferably, the automatic parameter invocation module includes a primary parameter invocation layer and a secondary parameter invocation layer, as detailed below: The first parameter call layer uses a built-in material mapping function to obtain design parameters and empirical values transmitted by the drawing information acquisition module. The design parameters represent the material, and the corresponding material tensile strength and bending coefficient are retrieved from the preset database. The secondary parameter calling layer, through the built-in device mapping function, retrieves the bending machine model, specific pressure, and robot grasping capability of the corresponding workstation from the preset database based on the workstation number selected by the user.
[0009] Preferably, the specific contents of the parameter analysis and calculation module are as follows: Based on the output parameters of the drawing information acquisition module and the material tensile strength and bending coefficient retrieved from the first parameter call layer, key process parameters are calculated using preset mathematical formulas. The key process parameters include the width of the lower die groove, bending force, specific pressure, inner radius of free bending, and minimum overlap. The formula for calculating the width of the lower mold groove is: ,in Indicates the width of the lower mold groove. Indicates plate thickness. Represents experience value; The formula for calculating the bending force is: ,in Indicates bending force. Indicates the bending coefficient. Indicates the tensile strength of the material. Indicates the length of the bend line; The formula for calculating the specific pressure is: ,in Indicates specific pressure; The formula for calculating the inner radius of the free bend is: ,in Indicates the free bending of the inner rounded corner. This represents the floor function; The formula for calculating the minimum overlap is: ,in This indicates the minimum overlap.
[0010] Preferably, the bending process quadruple verification module includes a lower die rationality verification layer, a design drawing rationality verification layer, an equipment rationality verification layer, and an automation verification layer, the specific contents of which are as follows: The lower mold rationality verification layer outputs verification results by judging the size relationship between the inner fillet of the design drawing and the inner fillet of the free bend. If the inner fillet of the design drawing is smaller than the inner fillet of the free bend, it outputs NG and prompts to adjust the empirical value until it outputs OK; otherwise, if the inner fillet of the design drawing is greater than or equal to the inner fillet of the free bend, it outputs OK and obtains the mold parameters for process guidance production. The rules for obtaining mold parameters for process guidance production are as follows: if the workshop has a matching lower mold size, the corresponding lower mold is selected directly; if there is no matching lower mold size, a lower mold size of one grade is selected. If the inner radius of the design drawing is larger than the inner radius of the free bending, the upper mold size is the inner radius of the design drawing. If the inner radius of the design drawing is equal to the inner radius of the free bending, and there is no matching upper mold size, a lower inner radius of the free bending is selected. The design drawing rationality verification layer outputs the verification result by comparing the minimum overlap amount with the minimum distance between the bending line and the edge of the part on the design drawing. If the minimum overlap amount is less than the minimum edge distance of the bending line, the design is reasonable; otherwise, an unreasonable prompt and adjustment measures are output. The device rationality verification layer outputs verification results by judging the relationship between the device specific pressure and the calculated specific pressure. If the device specific pressure is greater than the calculated specific pressure, the device selection is reasonable; otherwise, it prompts to change the workstation. The automated verification unit layer determines the relationship between the workstation robot's grasping ability and the part's unit weight, and outputs an automation feasibility result. When there is no robot at the workstation, it outputs NG; if the robot's grasping ability is greater than or equal to the part's unit weight, it outputs YES; otherwise, it outputs NO and prompts the user to replace the workstation.
[0011] Preferably, the specific content of the verification result output module is as follows: Based on the verification results of the quadruple verification module, process guidance data is output to the user terminal. The process guidance data includes the lower die size, upper die size, compatible workstation number, and the feasibility of automated bending. The process guidance data is presented in the form of a visual report. When there are abnormalities in the verification results, the system automatically generates adjustment suggestions, including the empirical value correction range, the lower die size downgrade selection scheme, the minimum overlap compensation value, and the workstation replacement priority list.
[0012] The bending process verification method based on multi-source parameter linkage includes the following steps: Step S01: Obtain the design parameters of the bending part through the design drawings and receive the empirical values input by the user; Step S02: Automatic parameter calling is completed through the built-in material mapping function and the built-in device mapping function; Step S03: Based on the output parameters and the call results of the first parameter call layer, calculate the key process parameters using preset mathematical formulas; Step S04: Based on key process parameters and the call results of the secondary parameter call layer, perform four-fold verification of the bending process; Step S05: Output process guidance data based on the verification results, including lower die size, upper die size, compatible workstation number, and feasibility of automated bending.
[0013] The technical effects and advantages of this invention are as follows: This invention features a drawing information acquisition module that directly extracts design parameters and receives empirical values, avoiding the tedious manual reading of drawings. An automatic parameter retrieval module uses built-in functions to accurately match material and equipment parameters from a database, replacing the traditional manual manual manual and table lookup operations. A parameter analysis and calculation module automatically executes preset formulas to quickly calculate key process parameters. The entire process significantly reduces the process analysis time for a single workpiece and improves verification efficiency. The automatic parameter recall module ensures the accuracy of matching basic data such as material tensile strength, bending coefficient, and equipment specific pressure, eliminating errors from manual retrieval. The four-fold verification module for bending process performs mandatory verification through explicit mathematical logic, comprehensively covering four dimensions: rationality of the lower die, rationality of the design drawing, rationality of the equipment, and feasibility of automation. This ensures the accuracy of key decisions such as die selection and equipment matching, significantly improves the coverage of process risk warnings, and achieves standardized operation of process verification. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of a bending process verification system based on multi-source parameter linkage.
[0015] Figure 2 This is a flowchart illustrating a bending process verification method based on multi-source parameter linkage. Detailed Implementation
[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The bending process verification method and system based on multi-source parameter linkage involved in the present invention are not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0017] like Figure 1 As shown, the present invention provides a bending process verification system based on multi-source parameter linkage, including: a drawing information acquisition module, a parameter automatic calling module, a parameter analysis and calculation module, a bending process quadruple verification module, and a verification result output module; The drawing information acquisition module obtains the design parameters of the bending parts through the design drawings, receives the experience values input by the user, and transmits the acquired parameters to the parameter automatic recall module. The automatic parameter calling module includes a primary parameter calling layer and a secondary parameter calling layer. Based on the parameters transmitted by the drawing information acquisition module, the automatic parameter calling is completed through the built-in material mapping function and the built-in equipment mapping function, respectively. The parameter analysis and calculation module calculates key process parameters using preset mathematical formulas based on the output parameters of the drawing information acquisition module and the call results of a first parameter call layer. The bending process quadruple verification module performs quadruple verification on the bending process based on the key process parameters output by the parameter analysis and calculation module and the call results of the secondary parameter call layer, and transmits the verification results to the verification result output module. The verification result output module outputs process guidance data based on the verification results of the quadruple verification module. The process guidance data includes the lower die size, upper die size, compatible workstation number, and the feasibility of automated bending.
[0018] In this embodiment, it should be specifically explained that the specific content of the drawing information acquisition module is as follows: The design parameters of the bent parts are obtained by design drawings. The design parameters include: material, plate thickness, single weight of part, bending line length and inner radius value of bending part in the design drawings of the bent parts. The system receives user-inputted experience values, which represent preset values selected based on different plate thicknesses. The experience values are integers from 4 to 12. When the plate thickness is less than or equal to 4 mm, the experience value is 6; when the plate thickness is greater than 8 mm, the experience value is 10 or 12; and when the plate thickness is between the two, the experience value is 8.
[0019] In this embodiment, it should be specifically noted that the automatic parameter calling module includes a primary parameter calling layer and a secondary parameter calling layer, the details of which are as follows: The first parameter call layer uses a built-in material mapping function to obtain design parameters and empirical values transmitted by the drawing information acquisition module. The design parameters represent the material, and the corresponding material tensile strength and bending coefficient are retrieved from the preset database. The secondary parameter calling layer, through the built-in device mapping function, calls the bending machine model, specific pressure, and robot grasping capability of the corresponding workstation from the preset database based on the workstation number selected by the user. The preset database stores a material-tensile strength correspondence table, an empirical value-bending coefficient correspondence table, and a workstation number-device parameter correspondence table.
[0020] In this embodiment, it should be specifically explained that the specific content of the parameter analysis and calculation module is as follows: Based on the output parameters of the drawing information acquisition module and the material tensile strength and bending coefficient retrieved from the first parameter call layer, key process parameters are calculated using preset mathematical formulas. The key process parameters include the width of the lower die groove, bending force, specific pressure, inner radius of free bending, and minimum overlap. The formula for calculating the width of the lower mold groove is: ,in Indicates the width of the lower mold groove. Indicates plate thickness. Represents experience value; The formula for calculating the bending force is: ,in Indicates bending force. Indicates the bending coefficient. Indicates the tensile strength of the material. Indicates the length of the bend line; The formula for calculating the specific pressure is: ,in Indicates specific pressure; The formula for calculating the inner radius of the free bend is: ,in Indicates the free bending of the inner rounded corner. This represents the floor function, where 0.156 is an empirical value accumulated based on actual production experience. The formula for calculating the minimum overlap is: ,in This represents the minimum overlap, with 0.75 being an empirical value accumulated based on actual production experience.
[0021] In this embodiment, it should be specifically noted that the bending process quadruple verification module includes a lower die rationality verification layer, a design drawing rationality verification layer, an equipment rationality verification layer, and an automation verification layer, the specific contents of which are as follows: The lower mold rationality verification layer outputs verification results by judging the size relationship between the inner fillet of the design drawing and the inner fillet of the free bend. If the inner fillet of the design drawing is smaller than the inner fillet of the free bend, it outputs NG and prompts to adjust the empirical value until it outputs OK; otherwise, if the inner fillet of the design drawing is greater than or equal to the inner fillet of the free bend, it outputs OK and obtains the mold parameters for process guidance production. The rules for obtaining mold parameters for process guidance production are as follows: if the workshop has a matching lower mold size, the corresponding lower mold is selected directly; if there is no matching lower mold size, a lower mold size of one grade is selected. If the inner radius of the design drawing is larger than the inner radius of the free bending, the upper mold size is the inner radius of the design drawing. If the inner radius of the design drawing is equal to the inner radius of the free bending, and there is no matching upper mold size, a lower inner radius of the free bending is selected. The design drawing rationality verification layer outputs the verification result by comparing the minimum overlap amount with the minimum distance between the bending line and the edge of the part on the design drawing. If the minimum overlap amount is less than the minimum edge distance of the bending line, the design is reasonable; otherwise, an unreasonable prompt and adjustment measures are output. The device rationality verification layer outputs verification results by judging the relationship between the device specific pressure and the calculated specific pressure. If the device specific pressure is greater than the calculated specific pressure, the device selection is reasonable; otherwise, it prompts to change the workstation. The automated verification unit layer determines the relationship between the workstation robot's grasping ability and the part's unit weight, and outputs an automation feasibility result. When there is no robot at the workstation, it outputs NG; if the robot's grasping ability is greater than or equal to the part's unit weight, it outputs YES; otherwise, it outputs NO and prompts the user to replace the workstation.
[0022] In this embodiment, it should be specifically noted that the specific content of the verification result output module is as follows: Based on the verification results of the quadruple verification module, process guidance data is output to the user terminal. The process guidance data includes the lower die size, upper die size, compatible workstation number, and the feasibility of automated bending. The process guidance data is presented in the form of a visual report. When there are abnormalities in the verification results, the system automatically generates adjustment suggestions, including the empirical value correction range, the lower die size downgrade selection scheme, the minimum overlap compensation value, and the workstation replacement priority list.
[0023] like Figure 2 As shown in this embodiment, it should be specifically explained that the bending process verification method based on multi-source parameter linkage includes the following steps: Step S01: Obtain the design parameters of the bending part through the design drawings and receive the empirical values input by the user; Step S02: Automatic parameter calling is completed through the built-in material mapping function and the built-in device mapping function; Step S03: Based on the output parameters and the call results of the first parameter call layer, calculate the key process parameters using preset mathematical formulas; Step S04: Based on key process parameters and the call results of the secondary parameter call layer, perform four-fold verification of the bending process; Step S05: Output process guidance data based on the verification results, including lower die size, upper die size, compatible workstation number, and feasibility of automated bending.
[0024] In this embodiment, it is important to note that the main difference between this implementation and the prior art lies in the fact that this embodiment directly extracts design parameters and receives empirical values through a drawing information acquisition module, avoiding the tedious manual identification of drawings; the automatic parameter retrieval module accurately matches material parameters and equipment parameters from the database through built-in functions, replacing the traditional manual operation of flipping through manuals and looking up tables; and the parameter analysis and calculation module automatically executes preset formulas to quickly complete the calculation of key process parameters. The entire process significantly reduces the process analysis time for a single workpiece and improves verification efficiency. The automatic parameter recall module ensures the accuracy of matching basic data such as material tensile strength, bending coefficient, and equipment specific pressure, eliminating errors from manual retrieval. The four-fold verification module for bending process performs mandatory verification through explicit mathematical logic, comprehensively covering four dimensions: rationality of the lower die, rationality of the design drawing, rationality of the equipment, and feasibility of automation. This ensures the accuracy of key decisions such as die selection and equipment matching, significantly improves the coverage of process risk warnings, and achieves standardized operation of process verification.
[0025] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
[0026] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A bending process verification system based on multi-source parameter linkage, characterized in that: include: The module includes a drawing information acquisition module, a parameter automatic call module, a parameter analysis and calculation module, a bending process four-fold verification module, and a verification result output module. The drawing information acquisition module obtains the design parameters of the bending parts through the design drawings, receives the experience values input by the user, and transmits the acquired parameters to the parameter automatic recall module. The automatic parameter calling module includes a primary parameter calling layer and a secondary parameter calling layer. Based on the parameters transmitted by the drawing information acquisition module, the automatic parameter calling is completed through the built-in material mapping function and the built-in equipment mapping function, respectively. The parameter analysis and calculation module calculates key process parameters using preset mathematical formulas based on the output parameters of the drawing information acquisition module and the call results of a first parameter call layer. The bending process quadruple verification module performs quadruple verification on the bending process based on the key process parameters output by the parameter analysis and calculation module and the call results of the secondary parameter call layer, and transmits the verification results to the verification result output module. The verification result output module outputs process guidance data based on the verification results of the quadruple verification module. The process guidance data includes the lower die size, upper die size, compatible workstation number, and the feasibility of automated bending.
2. The bending process verification system based on multi-source parameter linkage according to claim 1, characterized in that: The specific contents of the drawing information acquisition module are as follows: The design parameters of the bent parts are obtained by design drawings. The design parameters include: material, plate thickness, single weight of part, bending line length and inner radius value of bending part in the design drawings of the bent parts. The system receives user-inputted experience values, which represent preset values selected based on different plate thicknesses.
3. The bending process verification system based on multi-source parameter linkage according to claim 1, characterized in that: The automatic parameter invocation module includes a primary parameter invocation layer and a secondary parameter invocation layer, as detailed below: The first parameter call layer uses a built-in material mapping function to obtain design parameters and empirical values transmitted by the drawing information acquisition module. The design parameters represent the material, and the corresponding material tensile strength and bending coefficient are retrieved from the preset database. The secondary parameter calling layer, through the built-in device mapping function, retrieves the bending machine model, specific pressure, and robot grasping capability of the corresponding workstation from the preset database based on the workstation number selected by the user.
4. The bending process verification system based on multi-source parameter linkage according to claim 1, characterized in that: The specific contents of the parameter analysis and calculation module are as follows: Based on the output parameters of the drawing information acquisition module and the material tensile strength and bending coefficient retrieved from the first parameter call layer, key process parameters are calculated using preset mathematical formulas. The key process parameters include the width of the lower die groove, bending force, specific pressure, inner radius of free bending, and minimum overlap. The formula for calculating the width of the lower mold groove is: ,in Indicates the width of the lower mold groove. Indicates plate thickness. Represents experience value; The formula for calculating the bending force is: ,in Indicates bending force. Indicates the bending coefficient. Indicates the tensile strength of the material. Indicates the length of the bend line; The formula for calculating the specific pressure is: ,in Indicates specific pressure; The formula for calculating the inner radius of the free bend is: ,in Indicates the free bending of the inner rounded corner. This represents the floor function; The formula for calculating the minimum overlap is: ,in This indicates the minimum overlap.
5. The bending process verification system based on multi-source parameter linkage according to claim 1, characterized in that: The bending process quadruple verification module includes a lower die rationality verification layer, a design drawing rationality verification layer, an equipment rationality verification layer, and an automation verification layer, the specific contents of which are as follows: The lower mold rationality verification layer outputs verification results by judging the size relationship between the inner fillet of the design drawing and the inner fillet of the free bend. If the inner fillet of the design drawing is smaller than the inner fillet of the free bend, it outputs NG and prompts to adjust the empirical value until it outputs OK; otherwise, if the inner fillet of the design drawing is greater than or equal to the inner fillet of the free bend, it outputs OK and obtains the mold parameters for process guidance production. The rules for obtaining mold parameters for process guidance production are as follows: if the workshop has a matching lower mold size, the corresponding lower mold is selected directly; if there is no matching lower mold size, a lower mold size of one grade is selected. If the inner radius of the design drawing is larger than the inner radius of the free bending, the upper mold size is the inner radius of the design drawing. If the inner radius of the design drawing is equal to the inner radius of the free bending, and there is no matching upper mold size, a lower inner radius of the free bending is selected. The design drawing rationality verification layer outputs the verification result by comparing the minimum overlap amount with the minimum distance between the bending line and the edge of the part on the design drawing. If the minimum overlap amount is less than the minimum edge distance of the bending line, the design is reasonable; otherwise, an unreasonable prompt and adjustment measures are output. The device rationality verification layer outputs verification results by judging the relationship between the device specific pressure and the calculated specific pressure. If the device specific pressure is greater than the calculated specific pressure, the device selection is reasonable; otherwise, it prompts to change the workstation. The automated verification layer determines the relationship between the workstation robot's grasping ability and the part's unit weight, and outputs an automation feasibility result. When there is no robot at the workstation, it outputs NG; if the robot's grasping ability is greater than or equal to the part's unit weight, it outputs YES; otherwise, it outputs NO and prompts the user to replace the workstation.
6. The bending process verification system based on multi-source parameter linkage according to claim 1, characterized in that: The specific contents of the verification result output module are as follows: Based on the verification results of the quadruple verification module, process guidance data is output to the user terminal. The process guidance data includes the lower die size, upper die size, compatible workstation number, and the feasibility of automated bending. The process guidance data is presented in the form of a visual report. When there are abnormalities in the verification results, the system automatically generates adjustment suggestions, including the empirical value correction range, the lower die size downgrade selection scheme, the minimum overlap compensation value, and the workstation replacement priority list.
7. A bending process verification method based on multi-source parameter linkage, used in the bending process verification system based on multi-source parameter linkage as described in any one of claims 1-6, characterized in that: Includes the following steps: Step S01: Obtain the design parameters of the bending part through the design drawings and receive the empirical values input by the user; Step S02: Automatic parameter calling is completed through the built-in material mapping function and the built-in device mapping function; Step S03: Based on the output parameters and the call results of the first parameter call layer, calculate the key process parameters using preset mathematical formulas; Step S04: Based on key process parameters and the call results of the secondary parameter call layer, perform four-fold verification of the bending process; Step S05: Output process guidance data based on the verification results, including lower die size, upper die size, compatible workstation number, and feasibility of automated bending.