CN113001107B - Technological method and system for predevelopment of hot forming part sideline - Google Patents
Technological method and system for predevelopment of hot forming part sideline Download PDFInfo
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- CN113001107B CN113001107B CN202110175601.6A CN202110175601A CN113001107B CN 113001107 B CN113001107 B CN 113001107B CN 202110175601 A CN202110175601 A CN 202110175601A CN 113001107 B CN113001107 B CN 113001107B
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Abstract
The invention provides a technological method and a system for predevelopment of a hot forming part sideline, which comprises a flexible blanking control technological method and a flexible blanking control subsystem, and comprises the following concrete steps: s1, obtaining the initial sideline size of the automobile part according to the product model; s2, recording the initial sideline size serving as a real-time sideline size into a laser continuous blanking system; s3, uncoiling and blanking the materials by the laser continuous blanking system according to the real-time sideline size to obtain material pieces; s4, transferring the material sheet to a thermoforming production line to obtain a thermoformed part to be measured; and S5, judging whether the real-time sideline variation of the part to be measured exceeds a preset sideline variation. The invention ensures that the blanking sideline obtained each time is within the tolerance range through flexible blanking control, eliminates laser cutting after hot forming, reduces blanking waste, avoids product loss caused by the influence of the product yield due to the out-of-tolerance of the sideline of the material sheet, and reduces the production cost of hot forming parts.
Description
Technical Field
The invention relates to the field of automobile part production, in particular to a technological method and a system for predeveloping a side line of a thermal forming part.
Background
With the continuous application of new materials for automobiles and the continuous introduction of advanced design concepts meeting the demands of light weight and high safety performance of automobiles in the market, the manufacturing process also needs to be continuously improved. The method for manufacturing the automobile body by stamping the high-strength steel plate is an important way for realizing light weight of the automobile body and improving collision safety, at present, 1300-1500 MPa-level ultrahigh-strength parts are generally adopted for automobile body safety parts, but the higher the strength of the high-strength steel plate is, the more difficult the high-strength steel plate is to be formed, and particularly when the strength of the steel plate reaches 1500MPa, the conventional cold stamping process can hardly form the high-strength steel plate. The adoption of the thermal forming technology can well solve the problem of formability of ultrahigh-strength parts.
According to incomplete statistics, 400 thermoforming production lines exist in the world, wherein nearly 200 thermoforming lines exist in China, and are mainly used for producing thermoformed parts at key parts of an automobile, such as front and rear bumpers, door anti-collision beams, A, B and C columns, central channels, floor cross beams, longitudinal bearing beams and other positions which need to protect the safety of passengers most. Generally, the more hot formed steel is used in higher end cars, the stronger the car body. At present, most of vehicles produced in China use hot formed steel, but the proportion of the hot formed steel is different, and at present, automobile safety parts cannot completely adopt the hot formed steel due to the difficulty of a manufacturing process and the restriction of cost.
The material cost of the automobile parts accounts for 60-70% of the proportion, and the trimming mode of the hot-formed parts again mainly adopts laser, which belongs to the trimming mode with high technology, high investment and high cost.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the provided technology method and system for pre-developing the side line of the thermal forming part can eliminate laser cutting after thermal forming and reduce blanking waste, thereby reducing the production cost of the part.
In order to solve the technical problems, the invention adopts the technical scheme that:
a technological method for predevelopment of a hot forming part sideline comprises flexible blanking control, wherein the flexible blanking control comprises the following steps:
s1, obtaining the initial sideline size of the automobile part according to the product model;
s2, recording the initial sideline size serving as a real-time sideline size into a laser continuous blanking system;
s3, uncoiling and blanking the materials by the laser continuous blanking system according to the real-time side line size to obtain material pieces;
s4, transferring the material sheet to a thermoforming production line to obtain a thermoformed part to be measured;
and S5, judging whether the real-time sideline variation of the part to be measured exceeds a preset sideline variation, if so, obtaining a new sideline size according to the real-time sideline variation, inputting the new sideline size into a laser continuous blanking system as the real-time sideline size, and then executing the step S3, otherwise, directly continuing to execute the step S3, wherein the preset sideline variation is within the range of the qualified sideline variation.
In order to solve the technical problem, the invention adopts another technical scheme as follows:
a system for pre-development of a hot formed part edge line, comprising a flexible blanking control subsystem, the flexible blanking control subsystem comprising:
the sideline size measuring module is used for obtaining the initial sideline size of the automobile part according to the product modeling;
the sideline size input module is used for inputting the initial sideline size serving as a real-time sideline size into a laser continuous blanking system;
the laser continuous blanking system is used for uncoiling and blanking according to the real-time side line size to obtain a material sheet;
the thermoforming production line is used for receiving the material sheet and obtaining a thermoformed part to be measured according to the material sheet;
and the judging module is used for judging whether the real-time sideline variation of the part to be measured exceeds the preset sideline variation, if so, obtaining a new sideline size according to the real-time sideline variation, taking the new sideline size as the real-time sideline size to be input into the laser continuous blanking system, otherwise, directly uncoiling and blanking the part by the laser continuous blanking system, and the preset sideline variation is in the range of the qualified sideline variation.
The invention has the beneficial effects that: the invention provides a process method and a system for predeveloping the sideline of a hot forming part, which can judge whether the sideline size of the hot forming part exceeds the preset sideline variable quantity in real time and can carry out corresponding modification and re-entry into the system in time when the sideline size of the hot forming part exceeds the preset sideline variable quantity so as to ensure that the sideline of the hot forming part obtained in each time in the follow-up process is in the tolerance range, eliminate laser cutting after hot forming and reduce blanking waste, avoid product loss caused by the influence of the product yield due to the overdoof of the sideline of a material sheet, and reduce the production cost of the hot forming part.
Drawings
FIG. 1 is a flow chart of flexible blanking control steps of a process for edge line pre-development of a thermoformed part;
FIG. 2 is a flowchart of development control steps of a process for edge line pre-development of a thermoformed part;
FIG. 3 is a block diagram of a flexible blanking control subsystem of a system for edge line pre-development of thermoformed parts;
FIG. 4 is a block diagram of a development control subsystem of a system for edge pre-development of thermoformed parts.
Description of reference numerals:
10. a development control subsystem; 11. a modeling analysis module; 12. a modeling freezing module; 13. a tolerance and size analysis module; 14. a tolerance and size freezing module; 15. a product model determination module; 20. a flexible blanking control subsystem; 21. a sideline dimension measuring module; 22. a sideline size inputting module; 23. a laser continuous blanking system; 24. a thermoforming production line; 25. and a judging module.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 and 2, a process method for pre-developing a side line of a hot-formed part includes flexible blanking control, which includes the following steps:
s1, obtaining the initial sideline size of the automobile part according to the product model;
s2, recording the initial side line size serving as a real-time side line size into a laser continuous blanking system;
s3, uncoiling and blanking the materials by the laser continuous blanking system according to the real-time sideline size to obtain material pieces;
s4, transferring the material sheet to a thermoforming production line to obtain a thermoformed part to be measured;
and S5, judging whether the real-time sideline variation of the part to be measured exceeds a preset sideline variation, if so, obtaining a new sideline size according to the real-time sideline variation, inputting the new sideline size into a laser continuous blanking system as the real-time sideline size, and then executing the step S3, otherwise, directly continuing to execute the step S3, wherein the preset sideline variation is within the range of the qualified sideline variation.
As can be seen from the above description, the beneficial effects of the present invention are: whether the sideline size of the hot forming part exceeds the preset sideline variable quantity is judged in real time, and when the sideline size of the hot forming part exceeds the preset sideline variable quantity, corresponding modification can be carried out in time to re-input the system so as to ensure that the sideline of the hot forming part obtained at each follow-up time is in a tolerance range, the laser cutting after hot forming is eliminated, the waste of blanking is reduced, the product loss caused by the fact that the product yield is influenced due to the fact that the sideline of a material sheet is out of tolerance is avoided, and the production cost of the hot forming part is reduced.
Further, the step S4 specifically includes:
and putting the material sheet into a thermoforming mold for thermoforming processing to obtain the thermoformed part to be measured.
According to the description, the sheet is obtained by edge line pre-development through flexible blanking control, and the part to be measured obtained after hot forming processing does not need to be cut by laser to the edge line, so that the investment of laser cutting after hot forming is eliminated, and the waste of blanking is reduced.
Further, development control is also included before the flexible blanking control;
the development control steps are as follows:
s01, in a research and development stage, carrying out automatic analysis and evaluation according to initial part data of the part model provided by a customer to obtain a final part model;
s02, freezing the final part model;
s03, obtaining an initial tolerance and a size of the part model according to the final part model, and carrying out automatic analysis and evaluation on the initial tolerance and the size to obtain a final tolerance and a size;
s04, freezing the final tolerance and size;
and S05, obtaining the product model according to the final part model, the final tolerance and the size.
As can be seen from the above description, before the flexible blanking control, development control is also included, that is, the product shape is determined through pre-development, so that the stability of the sideline of the hot forming part and the product quality can be ensured to a certain extent.
Further, the step S01 specifically includes:
in the research and development stage, the initial part data of the part modeling provided by a customer is subjected to automatic analysis and evaluation to obtain the modeling data to be modified, which does not accord with the manufacturing process, in the initial part data, and the initial part data is modified according to the modeling data to be modified until the part modeling meeting the manufacturing process is obtained as the final part modeling.
According to the description, in the research and development stage, the standard definition is made on the modeling data of the part, so that the subsequent complicated steps of modifying the modeling of the part are reduced, and the qualification rate of the hot forming part is further improved.
Further, the step S03 specifically includes:
and obtaining the initial tolerance and the size of the part modeling according to the final part modeling, carrying out automatic analysis and evaluation on the initial tolerance and the size to obtain the tolerance and the size to be modified which do not accord with the manufacturing process in the initial tolerance and the size, and modifying the initial tolerance and the size according to the tolerance and the size to be modified until the final tolerance and the size which meet the manufacturing process are obtained.
According to the description, after the modeling of the part is determined, the standard definition is made on the tolerance and the size of the part, so that the subsequent complicated steps of modifying the tolerance and the size of the part are favorably reduced, and the qualification rate of the hot forming part is further improved.
Referring to fig. 3 and 4, the flexible blanking control subsystem includes:
the sideline size measuring module is used for obtaining the initial sideline size of the automobile part according to the product model;
the side line size recording module is used for recording the initial side line size serving as a real-time side line size into a laser continuous blanking system;
the laser continuous blanking system is used for uncoiling and blanking according to the real-time sideline size to obtain a material sheet;
the thermoforming production line is used for receiving the material sheet and obtaining a thermoformed part to be measured according to the material sheet;
and the judging module is used for judging whether the real-time sideline variation of the part to be measured exceeds the preset sideline variation, if so, obtaining a new sideline size according to the real-time sideline variation, taking the new sideline size as the real-time sideline size to be input into the laser continuous blanking system, otherwise, directly uncoiling and blanking the part by the laser continuous blanking system, and the preset sideline variation is in the range of the qualified sideline variation.
As can be seen from the above description, the beneficial effects of the present invention are: based on the same technical concept, the flexible blanking control subsystem is provided, whether the sideline size of the thermal forming part exceeds the preset sideline variable quantity or not is judged in real time, and when the sideline size exceeds the preset sideline variable quantity, the system can be correspondingly modified in time to ensure that the sideline of the thermal forming part obtained at each time is in the tolerance range, so that laser cutting after thermal forming is eliminated, blanking waste is reduced, product loss caused by the fact that the product yield is influenced by the fact that the sideline of a material sheet is out of tolerance is avoided, and the production cost of the thermal forming part is reduced.
Further, the thermoforming production line is specifically configured to receive the material sheet, place the material sheet into a thermoforming mold for thermoforming processing, and obtain the thermoformed part to be measured.
According to the description, the sheet obtained by edge line pre-development is controlled through flexible blanking, and the part to be measured obtained after thermoforming in the thermoforming production line is not required to be cut by laser to the edge line, so that the investment of laser cutting after thermoforming is eliminated, and the waste of blanking is reduced.
Further, the flexible blanking control system further comprises a development control subsystem, wherein the development control subsystem is used for obtaining the product model, and the product model is used for the flexible blanking control subsystem;
the development control subsystem includes:
the modeling analysis module is used for carrying out automatic analysis and evaluation on initial part data of part modeling provided by a client in a research and development stage to obtain final part modeling;
the model freezing module is used for freezing the model of the final part;
the tolerance and size analysis module is used for carrying out automatic analysis and evaluation on the initial tolerance and size obtained according to the final part modeling to obtain the final tolerance and size;
a tolerance and dimension freezing module for freezing the final tolerance and dimension;
and the product model determining module is used for obtaining the product model according to the final part model and the final tolerance and size.
It can be known from the above description that based on the same technical concept, a development control subsystem is provided, before the flexible blanking control subsystem performs blanking cutting, the development control subsystem is further provided for determining the product shape, and the product quality of the hot-formed part can be ensured to a certain extent by pre-developing and determining the product shape.
Further, the modeling analysis module specifically comprises:
the method comprises the steps of carrying out automatic analysis and evaluation on initial part data of part modeling provided by a customer in a research and development stage to obtain modeling data to be modified, which do not accord with a manufacturing process, in the initial part data, and modifying the initial part data according to the modeling data to be modified until the part modeling meeting the manufacturing process is obtained as the final part modeling.
According to the description, in the research and development stage, the modeling analysis module makes a standard definition on the modeling data of the part, so that the subsequent complicated steps of modifying the modeling of the part are favorably reduced, and the qualification rate of the hot-formed part is further improved.
Further, the tolerance and size analysis module specifically includes:
and the system is used for carrying out automatic analysis and evaluation on the initial tolerance and the size obtained according to the final part modeling to obtain the tolerance and the size to be modified which do not accord with the manufacturing process in the initial tolerance and the size, and modifying the initial tolerance and the size according to the tolerance and the size to be modified until the final tolerance and the size which meet the manufacturing process are obtained.
According to the description, after the modeling of the part is determined, the tolerance and size analysis module makes standard definition on the tolerance and size of the part, so that the subsequent complicated steps of modifying the tolerance and size of the part are favorably reduced, and the qualification rate of the hot-formed part is further improved.
Referring to fig. 1, a first embodiment of the present invention is:
a technological method for predevelopment of a hot forming part sideline comprises flexible blanking control.
The embodiment specifically relates to a process method for controlling flexible blanking in the blanking and cutting process before the thermal forming production of an automobile B column in the thermal forming production process of the automobile B column, which comprises the following steps:
s1, obtaining the initial sideline size of the automobile part according to the product model;
in this embodiment, each sideline size of the B pillar is obtained as an initial sideline size according to the product model of the B pillar;
s2, recording the initial side line size as a real-time side line size into a laser continuous blanking system;
s3, uncoiling and blanking according to the real-time side line size by a laser continuous blanking system to obtain material pieces;
therefore, all side line sizes of the B column are used as initial side line sizes and are recorded into the laser continuous blanking system, and the laser continuous blanking system performs cutting to obtain B column material pieces.
S4, transferring the material sheet to a thermoforming production line to obtain a thermoformed part to be measured;
in this embodiment, step S4 specifically includes: putting the material sheet into a thermoforming mold for thermoforming processing to obtain a thermoformed part to be measured;
thus, the B column material sheet is placed into a B column thermoforming mold for thermoforming processing, and the B column to be measured is obtained.
And S5, judging whether the real-time sideline variation of the part to be measured exceeds the preset sideline variation, if so, obtaining a new sideline size according to the real-time sideline variation, inputting the new sideline size into the laser continuous blanking system as the real-time sideline size, and then executing the step S3, otherwise, directly continuing to execute the step S3, wherein the preset sideline variation is within the range of the qualified sideline variation.
Specifically, in the present embodiment, the standard tolerance of the B pillar is [0,1mm ], and it is assumed that the borderline variation of the B pillar is [0,0.5mm ]. At the moment, the sideline variable quantity of the B column to be measured and the standard B column obtained by measurement is 0.6mm, exceeds the range of the preset sideline variable quantity, but does not exceed the tolerance range, the blanking program in the laser continuous blanking system needs to be modified in time, sideline size data is reduced by being more than or equal to 0.1mm and less than or equal to 0.6mm, the sideline variable quantity of the B column material piece obtained by the next uncoiling and blanking is controlled to be within the range of the preset sideline variable quantity of [0,0.5mm ], and therefore the sideline of the B column material piece obtained each time is repeatedly ensured to be within the tolerance range.
Meanwhile, due to the fact that the blanking side line size of the B column is strictly controlled, the B column to be measured obtained after thermoforming cannot exceed the tolerance range, laser cutting of the side line is not needed, blanking is saved, laser is reduced, and cost is reduced.
In practical application, a set of thermoforming B column data obtained by the traditional process and the flexible blanking control process are measured, wherein the quantity of B columns to be measured obtained by the traditional process is 7.947kg, and the quantity of B columns to be measured obtained by the flexible blanking control process is 7.142kg. The B column to be measured obtained by adopting the flexible blanking control process is qualified, the traditional process also needs to carry out laser cutting to obtain the qualified B column, the blanking cost of 0.805kg (7.947 kg-7.142 kg) can be saved by the flexible blanking control process by calculation compared with the traditional process, the blanking cost is 8.5 yuan/kg, the material cost can be saved by (0.805 multiplied by 8.5) 6.84 yuan, and the laser cutting cost is 5.4 yuan, so the flexible blanking control process saves the total cost of (6.84 + 5.4) 12.24 yuan compared with the traditional process. The current normal unit price of the B column is 85 yuan, namely compared with the B column obtained by the traditional process, the B column obtained by the flexible blanking control process has the cost reduction amplitude of 14.4 percent.
In other equivalent embodiments, the steps are performed for the automobile a-pillar, and a set of data of the thermoformed a-pillar obtained by the conventional process and the flexible blanking control process are measured, wherein the amount of the a-pillar to be measured obtained by the conventional process is 3.136kg, and the amount of the a-pillar to be measured obtained by the flexible blanking control process is 4.643kg. Compared with the traditional process, the calculated flexible blanking control process can save (4.643 kg-3.136 kg), namely 1.507kg of blanking, save (1.507 multiplied by 8.5), namely 12.8 yuan, and save the cost of laser cutting by 5.04 yuan, so that the flexible blanking control process saves (12.8 + 5.04), namely 17.84 yuan in total compared with the traditional process. The unit price of the column A is 50 yuan, namely compared with the column A obtained by the traditional process, the column A obtained by the flexible blanking control process has the cost reduction amplitude of 35.68 percent.
Referring to fig. 2, a second embodiment of the present invention is:
on the basis of the first embodiment, development control is further included before flexible blanking control, that is, in this embodiment, a process method of development control is adopted to determine a B-pillar product model meeting the standard, and a B-pillar thermoforming mold is also manufactured according to the B-pillar product model, including the steps of:
s01, in a research and development stage, carrying out automatic analysis and evaluation according to initial part data of the part model provided by a customer to obtain a final part model;
wherein, the step S01 specifically comprises the following steps: in the research and development stage, carrying out automatic analysis and evaluation according to initial part data of part modeling provided by a customer to obtain modeling data to be modified which does not accord with the manufacturing process in the initial part data, and modifying the initial part data according to the modeling data to be modified until part modeling meeting the manufacturing process is obtained as final part modeling;
in this embodiment, in a development stage, according to a requirement of a customer and a provided B-pillar initial model, the B-pillar initial model is automatically analyzed and evaluated through a computer program to obtain model data to be modified, which does not meet a manufacturing process, in the B-pillar initial data, and the B-pillar initial data is modified according to the model data to be modified until a B-pillar model meeting the manufacturing process is obtained as a final part model.
S02, freezing the final part model;
the standard modeling of the B column is determined, so that the subsequent complicated steps of modifying the modeling of the B column are reduced, and the qualification rate of the B column is further improved.
S03, obtaining the initial tolerance and the size of the part modeling according to the final part modeling, and carrying out automatic analysis and evaluation on the initial tolerance and the size to obtain the final tolerance and the size;
wherein, step S03 specifically includes: obtaining the initial tolerance and size of the part modeling according to the final part modeling, automatically analyzing and evaluating the initial tolerance and size to obtain the tolerance and size to be modified which do not accord with the manufacturing process in the initial tolerance and size, and modifying the initial tolerance and size according to the tolerance and size to be modified until the final tolerance and size which meet the manufacturing process are obtained;
in this embodiment, the initial tolerance and size of the B-pillar model are obtained according to the final part model, the initial tolerance and size are automatically analyzed and evaluated by a computer program to obtain the tolerance and size to be modified which do not conform to the manufacturing process in the initial tolerance and size, and the initial tolerance and size are modified according to the tolerance and size to be modified until the final tolerance and size which satisfy the manufacturing process are obtained.
And S04, freezing the final tolerance and size.
The standard tolerance and the size of the B column are determined, so that the subsequent complicated steps of modifying the tolerance and the size of the B column are reduced, and the qualification rate of the B column is further improved.
And S05, obtaining the product model according to the final part model, the final tolerance and the size.
In this embodiment, a standard B-pillar product model is obtained, and then a B-pillar thermoforming mold produced by the B-pillar product model meets the manufacturing process in terms of shape, tolerance and size, and is used for performing thermoforming processing on a material sheet in a subsequent thermoforming production line to obtain a B-pillar to be measured, so that the yield of the B-pillar to be measured is further improved.
Referring to fig. 3, a third embodiment of the present invention is:
the flexible blanking control subsystem 20 comprises a sideline size measuring module 21, a sideline size recording module 22, a laser continuous blanking system 23, a thermal forming production line 24 and a judging module 25, wherein each module correspondingly executes the steps S1-S5 of the flexible blanking control in the first embodiment.
Referring to fig. 4, a fourth embodiment of the present invention is:
on the basis of the third embodiment, a development control subsystem 10 is provided, the development control subsystem 10 is used for determining the product shape, and simultaneously producing a thermoforming mold according to the determined product shape, and the product shape and thermoforming mold are used for the flexible blanking control subsystem 20.
Specifically, as shown in fig. 4, the development control subsystem 10 includes a model analysis module 11, a model freezing module 12, a tolerance and size analysis module 13, a tolerance and size freezing module 14, and a product model determination module 15, and each module correspondingly executes the steps S01 to S05 of the development control in the second embodiment.
In summary, the process method and system for pre-developing the edge line of the hot-formed part provided by the invention comprise a flexible blanking control process method, a flexible blanking control subsystem for executing the process method, a development control process method and a development control subsystem for executing the process method, and by combining the flexible blanking control and the development control, the problems that the blanking waste caused by laser cutting and cutting is required after the hot-formed material sheet is subjected to hot forming due to the lack of the pre-development process in the existing automobile part production causes high production cost and the product yield is influenced by the fact that the blanking edge line exceeds the tolerance range, and the product loss is caused by the fact that the product yield is influenced are effectively solved, and meanwhile, the qualification rate of the hot-formed part is improved by the development control.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (4)
1. A technological method for predevelopment of a hot forming part sideline is characterized by comprising flexible blanking control, wherein the flexible blanking control comprises the following steps:
s1, obtaining the initial sideline size of the automobile part according to the product model;
s2, recording the initial side line size serving as a real-time side line size into a laser continuous blanking system;
s3, uncoiling and blanking the materials by the laser continuous blanking system according to the real-time sideline size to obtain material pieces;
s4, transferring the material sheet to a thermoforming production line to obtain a thermoformed part to be measured;
s5, judging whether the real-time sideline variation of the part to be measured exceeds a preset sideline variation, if the real-time sideline variation exceeds the range of the preset sideline variation but does not exceed a tolerance range, timely modifying a blanking program in the laser continuous blanking system, obtaining a new sideline size according to the real-time sideline variation, inputting the new sideline size into the laser continuous blanking system as the real-time sideline size, and then executing the step S3, otherwise, directly continuing to execute the step S3, wherein the preset sideline variation is within the range of the qualified sideline variation;
development control is also included before the flexible blanking control;
the development control steps are as follows:
s01, in a research and development stage, carrying out automatic analysis and evaluation according to initial part data of the part model provided by a customer to obtain a final part model, specifically:
in a research and development stage, carrying out automatic analysis and evaluation according to initial part data of part modeling provided by a customer to obtain modeling data to be modified which does not accord with the manufacturing process in the initial part data, and modifying the initial part data according to the modeling data to be modified until the part modeling which meets the manufacturing process is obtained as the final part modeling;
s02, freezing the final part model;
s03, obtaining the initial tolerance and the size of the part modeling according to the final part modeling, and carrying out automatic analysis and evaluation on the initial tolerance and the size to obtain the final tolerance and the size, wherein the method specifically comprises the following steps:
obtaining the initial tolerance and the size of the part modeling according to the final part modeling, carrying out automatic analysis and evaluation on the initial tolerance and the size to obtain the tolerance and the size to be modified which do not accord with the manufacturing process in the initial tolerance and the size, and modifying the initial tolerance and the size according to the tolerance and the size to be modified until the final tolerance and the size which meet the manufacturing process are obtained;
s04, freezing the final tolerance and size;
and S05, obtaining the product model according to the final part model, the final tolerance and the size.
2. The process method for edge line pre-development of the thermoformed part according to claim 1, wherein the step S4 is specifically:
and putting the material sheet into a thermoforming mold for thermoforming processing to obtain the thermoformed part to be measured.
3. A system for pre-developing a hot forming part sideline is characterized by comprising a flexible blanking control subsystem, wherein the flexible blanking control subsystem comprises:
the sideline size measuring module is used for obtaining the initial sideline size of the automobile part according to the product modeling;
the side line size recording module is used for recording the initial side line size serving as a real-time side line size into a laser continuous blanking system;
the laser continuous blanking system is used for uncoiling and blanking according to the real-time sideline size to obtain a material sheet;
the thermoforming production line is used for receiving the material sheet and obtaining a thermoformed part to be measured according to the material sheet;
the judging module is used for judging whether the real-time side line variable quantity of the part to be measured exceeds a preset side line variable quantity, if the real-time side line variable quantity exceeds the range of the preset side line variable quantity but does not exceed a tolerance range, a blanking program in the laser continuous blanking system needs to be modified in time, a new side line size is obtained according to the real-time side line variable quantity, the new side line size is taken as the real-time side line size and is recorded into the laser continuous blanking system, otherwise, uncoiling and blanking are directly carried out by the laser continuous blanking system, and the preset side line variable quantity is within the range of the qualified side line variable quantity;
the flexible blanking control subsystem is used for controlling the flexible blanking control subsystem to perform flexible blanking;
the development control subsystem includes:
the modeling analysis module is used for carrying out automatic analysis and evaluation on initial part data of part modeling provided by a customer in a research and development stage to obtain final part modeling, and specifically comprises the following steps:
the system comprises a data processing module, a data processing module and a data processing module, wherein the data processing module is used for automatically analyzing and evaluating initial part data of part models provided by customers in a research and development stage to obtain model data to be modified which does not accord with a manufacturing process in the initial part data, and modifying the initial part data according to the model data to be modified until the part models which meet the manufacturing process are obtained as final part models;
the model freezing module is used for freezing the model of the final part;
and the tolerance and dimension analysis module is used for carrying out automatic analysis and evaluation on the initial tolerance and dimension obtained according to the final part model to obtain the final tolerance and dimension, and specifically comprises the following steps:
the automatic analysis and evaluation device is used for automatically analyzing and evaluating the initial tolerance and the size obtained according to the final part modeling to obtain the tolerance and the size to be modified which do not accord with the manufacturing process in the initial tolerance and the size, and modifying the initial tolerance and the size according to the tolerance and the size to be modified until the final tolerance and the size which meet the manufacturing process are obtained;
a tolerance and dimension freezing module for freezing the final tolerance and dimension;
and the product model determining module is used for obtaining the product model according to the final part model and the final tolerance and size.
4. The system of claim 3, wherein the thermoforming line is configured to receive the sheet, place the sheet into a thermoforming mold for thermoforming processing, and obtain the thermoformed part to be measured.
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