CN103128147A - Method and system of resilience correcting and machining of beam mold - Google Patents
Method and system of resilience correcting and machining of beam mold Download PDFInfo
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Abstract
The invention provides a method and a system of resilience correcting and machining of a beam mold. The method includes: according to a surface parameter of a preset beam workpiece, a mold surface parameter is confirmed, and a first beam mold is manufactured according to the mold surface parameter through mold processing equipment; through the first beam mold, a first testing workpiece is manufactured; through a resilience analytical device, a surface parameter of the first testing workpiece is obtained, and modulus of resilience of the workpiece is obtained after the surface parameter of the first testing workpiece is compared with the surface parameter of the preset beam workpiece; according to the modulus of the resilience of the workpiece, resilience compensation is carried out on the mold surface parameter of the first beam mold and a compensated mold surface parameter is obtained; according to the compensated mold surface parameter, a second beam mold is manufactured; until the surface parameters of the testing workpiece and the preset beam workpiece meet qualified requirements of workpieces, a final mold surface parameter is confirmed; and according to the final mold surface parameter, a final beam mold is manufactured. According to the method and the system of resilience correcting and machining of the beam mold, manufacturing time of the mold is saved and manufacturing cost of the mold is reduced.
Description
Technical Field
The invention relates to the technical field of stamping dies, in particular to a method and a system for processing resilience correction of a beam die.
Background
The stamping and rebounding are always the focus of attention in the industry, for example, the debugging of beam molds is difficult during the manufacturing process, and it is difficult to accurately manufacture the molds meeting the design requirements; the beam workpiece manufactured by the beam mold is easy to have quality defects of springback, warping and the like, the qualification rate is low, and the debugging of the mold refers to the adjustment of the mold for many times so that the workpiece manufactured by the mold is qualified.
In the prior art, a springback compensation method is generally adopted for springback control, and mostly, mould debugging is manually carried out to compensate springback. Specifically, a mold can be manufactured first, a test workpiece is manufactured by using the mold, and the test workpiece is detected; if the workpiece is found to be unqualified, manually adjusting the die according to the workpiece detection result, manually grinding the shape of the working part of the die again, and executing the processes of manufacturing test work, workpiece detection and manual die adjustment again by using the ground die until the workpiece manufactured by the die is suitable, indicating that the die is qualified in debugging, and replacing the insert to manufacture a finished die.
The method for debugging and manufacturing the die has the defects that the die is often adjusted and rebounded for compensation manually according to the experience of workers, the accuracy is poor, the rebounded compensation result is not completely consistent with the actual rebounded result, for example, the phenomenon of over-compensation or insufficient compensation can occur, repeated reworking is often needed, the shape of the die is adjusted for multiple times, and the like.
Disclosure of Invention
The invention provides a springback correction processing method and a springback correction processing system for beam molds, which aim to improve debugging and processing efficiency of the beam molds and reduce production cost of the molds.
The invention provides a springback correction processing method of a beam mould, which comprises the following steps:
101. determining the shape surface parameter of the die according to the shape surface parameter of a preset beam workpiece, and manufacturing a first beam die through die machining equipment according to the shape surface parameter of the die;
102. manufacturing a first test workpiece through the first beam type die;
103. acquiring the surface parameter of the first test workpiece through a springback analysis device, and comparing the surface parameter of the first test workpiece with the surface parameter of a preset beam workpiece to obtain the springback quantity of the workpiece; performing rebound compensation on the die surface parameter of the first beam die according to the rebound quantity of the workpiece to obtain a compensated die surface parameter;
104. manufacturing a second beam type mould through mould processing equipment according to the compensated mould profile parameters;
105. manufacturing a second test workpiece through a second beam type die;
106. returning to step 103, and continuing to repeatedly execute step 103 and step 105 until the profile parameters of the test workpiece and the preset beam workpiece meet the qualified requirements of the workpieces, determining the final profile parameter of the die;
107. and manufacturing a final beam type mould through mould processing equipment according to the final mould profile parameters.
The invention provides a springback correction processing system of a beam mould, which comprises:
the die processing equipment is used for determining die surface parameters according to the surface parameters of preset beam type workpieces, manufacturing a first beam type die according to the die surface parameters, and manufacturing a first test workpiece through the first beam type die; the second beam type die is manufactured according to the compensated die surface parameters, so that a second test workpiece is manufactured through the second beam type die; and manufacturing a final beam type mould according to the profile parameters of the final mould;
the springback analysis equipment is used for acquiring the surface parameters of the first test workpiece and comparing the surface parameters of the first test workpiece with the surface parameters of a preset beam workpiece to obtain the springback quantity of the workpiece; performing rebound compensation on the die surface parameter of the first beam die according to the rebound quantity of the workpiece to obtain a compensated die surface parameter; and determining the shape parameters of the final die when the shape parameters of the test workpiece and the preset beam workpiece meet the qualified requirements of the workpieces.
According to the method and the system for processing the beam mould by resilience correction, provided by the invention, the mould surface parameter of the mould is subjected to resilience compensation according to the resilience amount of the workpiece obtained by analysis of resilience analysis equipment, and a new mould is manufactured by mould processing equipment according to the mould surface parameter subjected to resilience compensation, so that when the mould is manufactured, the mould is not only more accurate in parameter based on mould manufacturing due to the fact that the resilience amount of the workpiece is analyzed by the resilience analysis equipment, but also more accurate in mould processing and accurate in control of the design and production of the mould compared with manual experience manufacturing in the prior art due to the fact that the mould is manufactured by the mould processing equipment, the production time of the mould is greatly saved, and the manufacturing cost of the mould is reduced.
Drawings
FIG. 1 is a schematic flow chart illustrating an embodiment of a method for processing a beam mold according to the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the springback correction processing system of the beam die of the present invention.
Detailed Description
Example one
Fig. 1 is a schematic flow chart of an embodiment of the springback correction processing method of the beam type mold of the present invention, wherein the beam type mold is mainly used for manufacturing, for example, a frame beam, a roof beam, a front cross beam, a front and rear impact beam, and some reinforcing beams, which are parts for framework and reinforcement in an automobile body structure; the structural section of the beam is in a U shape or a reversed U shape, and the beam can be a straight beam or a curved beam and is designed for the structure of a vehicle body. As shown in fig. 1, the beam type mold processing method of the embodiment may include:
101. determining the shape surface parameter of the die according to the shape surface parameter of a preset beam workpiece, and manufacturing a first beam die through die machining equipment according to the shape surface parameter of the die;
in the process design stage of the die, the rebound property and the performance characteristic of a workpiece manufactured by the die can be analyzed in advance through CAE analysis software, and the die can be adjusted for many times in the later period, so that the necessary machining allowance can be reserved for the die during the structural design of the die according to the CAE analysis result and the later shaping comprehensively, and secondary machining or multiple machining in the later period of the die is allowed. In the structural design of the die, the strength, the working stress stability, the rationality of the fixing mode and the like of the multi-time processing die can be considered.
In the step, after the structural design is carried out on the die, when the first beam type die can be manufactured according to the die surface parameters, the machining allowance is reserved for the first beam type die. Wherein the first beam type die is equivalent to an initially manufactured die.
102. Manufacturing a first test workpiece through a first beam type die;
when a first test workpiece is manufactured through the first beam type die, a bench worker is only responsible for grinding (the workpiece flow is not influenced), and the workpiece state is not adjusted; and the workpiece is pressed and then is subjected to laser cutting, so that the workpiece deformation caused by the laser cutting is reduced as much as possible, and the subsequent workpiece compensation work is not influenced.
103. Obtaining the compensated mould surface parameters through a springback analysis device;
the springback analyzing device in this step may be a computer on which analyzing software such as CATIA is loaded. The surface parameters of the first test workpiece in 102 are obtained by the springback analysis device, and specifically, the first test workpiece may be processed by a three-coordinate sampling method or a white light scanning method to generate a point cloud file corresponding to the first test workpiece, where the point cloud file is equivalent to a simulated workpiece state of the first test workpiece and includes the surface parameters of the first test workpiece. This step is equivalent to feeding back the quality state of the workpiece after grinding.
Specifically, a CATIA (computer-graphics aided three-dimensional interactive application) can be used for processing a point cloud file, and profile parameters of a first test workpiece are compared with profile parameters of a preset beam workpiece (namely an original product workpiece) to obtain the rebound quantity of the workpiece; and according to the rebound amount of the workpiece, carrying out rebound compensation on the mould surface parameter of the first beam mould by using a related module tool in the CATIA to obtain the compensated mould surface parameter, so that the mould manufactured by adopting the compensated mould surface parameter can better inhibit the rebound.
In this step, CAE analysis may be performed on the mold corresponding to the compensated mold profile parameter to predict the deformation characteristics of the workpiece at the springback compensation position.
Note that the actions of the CAE analysis and the CATIA analysis employed in the present embodiment are different. Specifically, CAE software can predict and analyze the molding condition of the stamped part, predict and judge the part rebound tendency after the molding is changed, and analyze the wrinkling and cracking of the molded surface of the die; however, the analysis of the springback by the CAE software is only qualitative and not quantitative, only the approximate trend can be predicted, the result can be used in predicting the trend, but the accuracy is not accurate, or the feedback of the point cloud of the part is acquired after the mould is actually debugged. The CATIA software is three-dimensional modeling software, is mainly used for designing parts, and has the functions of curved surface, entity, point cloud operation, motion analysis, large-scale assembly, electronic wiring, magnetic field and electric field analysis and the like.
104. Manufacturing a second beam type mould through mould processing equipment according to the compensated mould profile parameters;
in the second beam type die manufactured by adopting the compensated die surface parameters, the die is adjusted more accurately according to the result of the springback compensation, so that the production design of the die can be accurately controlled; and according to the shape parameters after the die is adjusted, the die processing equipment is controlled to process the die, so that the accuracy of die manufacturing is further improved, compared with the manual manufacturing and adjusting mode in the prior art, the accuracy of die manufacturing is greatly improved, the die adjusting time and the die production cost are obviously saved, and the construction period is shortened.
In addition, in this step, when the adjustment processing is performed on the mold, the mold processing allowance reserved in 101 is used, so that the mold can be reused, and the cost is saved.
105. Manufacturing a second test workpiece through a second beam type die;
106. judging that the shape surface parameters of the second test workpiece and the preset beam workpiece meet the workpiece qualified requirements, if so, continuing to execute 107; otherwise, returning to 103, and continuing to repeatedly execute 103 and 106 until the profile parameters of the test workpiece and the preset beam workpiece meet the qualified requirements of the workpieces, and determining the final profile parameter of the die;
107. and determining the shape parameters of the final die, and manufacturing the final beam die according to the shape parameters of the final die.
According to the process, after a plurality of rounds of adjustment, a die capable of manufacturing qualified workpieces can be obtained; for example, the ideal state can be achieved by adjusting the left and right sides of the three-wheel die. The final mould surface parameter is the mould surface parameter of the corresponding qualified workpiece; the qualified requirements of the workpieces can be specifically set according to specific production and use conditions.
The yield of the die produced by the method of the embodiment is about 92 percent; compared with the 84% qualification rate of the common die processing method in the prior art, the qualification rate of the workpiece manufactured by the die is obviously and greatly improved, and the defects of rebound and the like of the workpiece are obviously reduced.
The processing method for resilience correction of the beam type die is characterized in that resilience compensation is carried out on die surface parameters of the die according to the resilience amount of a workpiece obtained by analysis of resilience analysis equipment, and a new die is manufactured according to the die surface parameters after the resilience compensation through die processing equipment, so that when the die is manufactured, not only is the parameters of the die manufactured according to the resilience amount of the workpiece analyzed by the resilience analysis equipment more accurate, but also the die is manufactured through the die processing equipment, compared with the manual experience manufacturing in the prior art, the processing of the die is more accurate, the design and the production of the die are accurately controlled, the production time of the die is greatly saved, and the manufacturing cost of the die is reduced.
Example two
Fig. 2 is a schematic structural diagram of an embodiment of a system for processing a beam die by springback correction according to the present invention, where the system can execute a method for processing a beam die by springback correction according to any embodiment of the present invention, and this embodiment only briefly describes the structure of the system, and the specific principle can be described with reference to the method embodiment. As shown in fig. 2, the beam type mold processing system of the present embodiment may include: a die processing device 21 and a spring back analyzing device 22; wherein,
the die machining equipment 21 is used for determining die surface parameters according to the surface parameters of a preset beam workpiece, and manufacturing a first beam die according to the die surface parameters so as to manufacture a first test workpiece through the first beam die; the second beam type die is manufactured according to the compensated die surface parameters, so that a second test workpiece is manufactured through the second beam type die; and manufacturing a final beam type mould according to the profile parameters of the final mould;
the springback analysis device 22 is configured to obtain a profile parameter of the first test workpiece, and compare the profile parameter of the first test workpiece with a profile parameter of a preset beam workpiece to obtain a workpiece springback amount; performing rebound compensation on the die surface parameter of the first beam die according to the rebound quantity of the workpiece to obtain a compensated die surface parameter; and determining the shape parameters of the final die when the shape parameters of the test workpiece and the preset beam workpiece meet the qualified requirements of the workpieces.
Further, the mold processing device 21 is further configured to reserve a processing margin for the first beam mold when the first beam mold is manufactured according to the mold surface parameter.
Further, the springback analyzing device 22 is specifically configured to process the first test workpiece by using a three-coordinate sampling method or a white light scanning method, and generate a point cloud file corresponding to the first test workpiece, where the point cloud file includes a profile parameter of the first test workpiece.
The processing system is revised in resilience of roof beam class mould of this embodiment, the mould shape parameter through the work piece resilience volume that obtains according to resilience analysis equipment analysis is to the mould shape parameter of mould is kick-backed and is compensated, and mould shape parameter preparation new mould after according to the resilience compensation through mould processing equipment, make when the preparation mould, not only because resilience analysis equipment analysis work piece resilience volume makes the parameter of mould preparation foundation comparatively accurate, and because make the mould through mould processing equipment, for the artificial experience preparation among the prior art, make the processing of mould more accurate, the design and the production of accurate control mould, the production time of mould has been practiced thrift greatly, the cost of manufacture of mould has been reduced.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A springback correction processing method of a beam mould is characterized by comprising the following steps:
101. determining the shape surface parameter of the die according to the shape surface parameter of a preset beam workpiece, and manufacturing a first beam die through die machining equipment (21) according to the shape surface parameter of the die;
102. manufacturing a first test workpiece through the first beam type die;
103. the surface parameter of the first test workpiece is obtained through a springback analysis device (22), and the surface parameter of the first test workpiece is compared with the surface parameter of a preset beam workpiece to obtain the springback quantity of the workpiece; performing rebound compensation on the die surface parameter of the first beam die according to the rebound quantity of the workpiece to obtain a compensated die surface parameter;
104. manufacturing a second beam type mould through mould processing equipment (21) according to the compensated mould profile parameters;
105. manufacturing a second test workpiece through a second beam type die;
106. judging that the shape surface parameters of the second test workpiece and the preset beam workpiece meet the workpiece qualified requirements, if so, continuing to execute 107; otherwise, returning to 103, and continuing to repeatedly execute 103 and 106 until the profile parameters of the test workpiece and the preset beam workpiece meet the qualified requirements of the workpieces, and determining the final profile parameter of the die;
107. and manufacturing a final beam type mould through mould processing equipment (21) according to the profile parameters of the final mould.
2. The method for processing beam mold with spring back correction according to claim 1, wherein the step 101, when manufacturing the first beam mold by the mold processing device (21) according to the mold profile parameters, further comprises:
and reserving machining allowance for the first beam type die.
3. The method for processing a beam die according to claim 1, wherein the step 103 of obtaining a profile parameter of the first test workpiece comprises:
and processing the first test workpiece by adopting a three-coordinate point acquisition or white light scanning method to generate a point cloud file corresponding to the first test workpiece, wherein the point cloud file comprises the profile parameters of the first test workpiece.
4. A processing system is revised in resilience of roof beam class mould which characterized in that includes:
the die machining equipment (21) is used for determining die surface parameters according to the surface parameters of a preset beam workpiece, manufacturing a first beam die according to the die surface parameters, and manufacturing a first test workpiece through the first beam die; the second beam type die is manufactured according to the compensated die surface parameters, so that a second test workpiece is manufactured through the second beam type die; and manufacturing a final beam type mould according to the profile parameters of the final mould;
the springback analysis equipment (22) is used for acquiring the surface parameter of the first test workpiece, and comparing the surface parameter of the first test workpiece with the surface parameter of a preset beam workpiece to obtain the springback quantity of the workpiece; performing rebound compensation on the die surface parameter of the first beam die according to the rebound quantity of the workpiece to obtain a compensated die surface parameter; and determining the shape parameters of the final die when the shape parameters of the test workpiece and the preset beam workpiece meet the qualified requirements of the workpieces.
5. A beam die springback correction machining system according to claim 1,
the die machining equipment (21) is further used for reserving machining allowance for the first beam type die when the first beam type die is manufactured according to the die surface parameters.
6. A beam die springback correction machining system according to claim 1,
the springback analysis device (22) is specifically configured to process the first test workpiece by using a three-coordinate sampling point or white light scanning method, and generate a point cloud file corresponding to the first test workpiece, where the point cloud file includes a profile parameter of the first test workpiece.
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| CN113977212A (en) * | 2021-10-29 | 2022-01-28 | 湖北江山专用汽车有限公司 | Method for repairing mold of blade mold of mixer truck, mold and blade |
| CN113977212B (en) * | 2021-10-29 | 2024-03-29 | 湖北江山专用汽车有限公司 | Method for repairing blade die of mixer truck, die and blade |
| CN114297783A (en) * | 2021-12-31 | 2022-04-08 | 上汽通用五菱汽车股份有限公司 | Implementation method, device and readable storage medium of common mode top cover with different configurations |
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