Springback restraining method for novel mold

Abstract

The invention relates to the technical field of novel mold manufacturing, and discloses a springback suppression method for a novel mold, which comprises the following steps: manufacturing a mold, setting a simulation model according to the mold to be manufactured, and adjusting the process parameters of the simulation model until the numerical values of the process parameters and the parameter numerical values preset by people meet the standard requirements; a mold is optimized, a moving module is arranged on the mold, a push plate and a sliding plate are arranged to conduct springback compensation restraining on the bending deformation portion of the plate, and bending springback of the plate is restrained; surface treatment is conducted, specifically, surface modification and coating technologies are introduced, a surface structure with the adsorption resisting and stress concentration reducing effects is formed through a laser surface treatment technology, and a coating is formed on the surface of the mold through a thermal spraying technology; and mold detection: carrying out multiple times of springback detection according to the manufactured mold, and carrying out springback compensation inhibition on the plate by a push plate and a slide plate when the moving module is used, so as to obtain various detection data.

Description

Technical Field

[0001] The present invention relates to the technical field of novel mold manufacturing, and more particularly to a method for suppressing springback of a novel mold. Background Art

[0002] In mold manufacturing and forming processes, mold springback is a common and headache problem. After demolding, the mold often rebounds to a certain extent due to the nature of the material itself or the stress during the forming process, resulting in dimensional deviation or inaccurate shape of the finished product, which seriously affects the quality and production efficiency of the product. Unloading is an important factor affecting springback. The mold undergoes plastic deformation during stamping and elastic deformation at the same time. After the forming load is unloaded, the part will rebound to a certain extent. Springback is a deformation that will inevitably occur after the sheet metal is formed and the formed part is removed from the mold, which will affect the final shape of the part. The amount of springback directly affects the geometric accuracy of the workpiece, and it is also a forming defect that is difficult to overcome in the process.

[0003] Since the mold is often subjected to pressure and bends and rebounds during use, people will optimize the mold when manufacturing the mold. However, the existing mold needs to be debugged after optimization. This process depends on the operator's experience and skills. Therefore, more manpower and energy are required during the debugging process, and the rebound suppression effect is poor. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a method for suppressing springback of a novel mold, which has the advantage of more precise operation.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for suppressing springback of a new mold, comprising the following steps:

[0006] S1: Manufacture the mold, determine the mold shape, specific structure, size and material used, set up a simulation model according to the mold to be manufactured, and adjust the process parameters of the simulation model until the values ​​of the process parameters and the preset parameter values ​​meet the standard requirements;

[0007] S2: Optimize the mold, set a moving module on the mold, set a push plate and a slide plate to compensate and suppress the rebound of the bending and deformation of the plate, and use strengthening technology at the rebound angle to suppress the bending and rebound of the plate;

[0008] S3: Surface treatment, using surface modification and coating technology, using laser surface treatment technology to form a surface structure with anti-adsorption and stress concentration reduction effects, and using thermal spraying technology to form a coating on the mold surface;

[0009] S4: Mould inspection: multiple rebound inspections are performed on the manufactured moulds. When using the mobile module, the push plate and the slide plate are used to compensate and suppress the rebound of the plate, and a variety of inspection data are obtained, and the average value of the inspection data is collected.

[0010] As a preferred technical solution of the present invention, the simulation results in S1 are combined with preset requirements according to the adjusted parameters to obtain the target process parameters corresponding to the minimum springback value, wherein the simulation model sets the gravity parameters of the simulation model according to the target plate properties of the mold.

[0011] As a preferred technical solution of the present invention, the process parameters in S1 include pressure, friction coefficient and punching speed. According to the simulation model, the test is carried out to obtain the minimum and maximum values ​​of the mold springback, and the target plate processed by the mold is tested to make the plate adapt to the minimum and maximum values ​​of the mold springback.

[0012] As a preferred technical solution of the present invention, the movable module in S2 includes a lower movable punch and an upper flanging insert. In the simulation model, the movable modules are all corresponded to the target plate, and the plate is limited during the use of the mold, thereby improving the adaptability and rebound control effect of the mold.

[0013] As a preferred technical solution of the present invention, a new material is provided in S2, and the new material has special elasticity and stress deformation resistance characteristics, and high-strength alloy steel is adopted, and the new material is used in the parts of the mold that contact the plate; after the mold is subjected to stress deformation, it can be restored to its original shape by heating, thereby ensuring the accuracy of the mold.

[0014] As a preferred technical solution of the present invention, the surface modification in S3 is obtained through human experiments, and the mold is endowed with hydrophilicity, biocompatibility, antistatic properties and dyeing properties according to the target processing plate of the mold.

[0015] As a preferred technical solution of the present invention, the coating material used in the coating technology in S3 is diamond coating, a coating maintenance and repair mechanism is established, and the coating performance is tested, including hardness, wear resistance, corrosion resistance, and demolding performance, until the coating requirements meet the standards.

[0016] As a preferred technical solution of the present invention, the mold detection in S4 includes detecting the springback effect of the mold, and the detection is performed without using the mobile module and with using the mobile module, and the springback values ​​are collected according to the two situations.

[0017] As a preferred technical solution of the present invention, the average value of the detection data in S4 is compared with the preset minimum rebound value and maximum rebound value, so that the detection data is between the minimum rebound value and the maximum rebound value.

[0018] As a preferred technical solution of the present invention, reinforcing ribs are added to S2, and the reinforcing ribs are respectively arranged at the contact positions between the mold and the plate. The inner wall thickness of the mold is increased by 2 to 5 cm, and a cooling system is added to cool the mold after use in time; the thermal rebound of the mold is reduced, and the residual stress caused by temperature difference is reduced.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: it provides a comprehensive mold rebound suppression solution, covering multiple aspects such as materials, surface treatment and design optimization. By comprehensively optimizing the mold and performing corresponding treatments for the use of different plates, the structural optimizations can directly cooperate with each other to provide a rebound compensation suppression effect during plate processing. The surface treatment of the mold and the application of new materials can strengthen the mold itself, effectively reduce the shape change of the mold after molding, improve the dimensional accuracy and surface quality of the product, thereby preventing temperature changes from having a significant impact on the mold, freeing people from dependence on experience and technology, and greatly reducing the manpower and energy invested in mold manufacturing, thereby reducing material costs and production cycles, and improving production efficiency and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the overall flow chart of the present invention. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figure 1 As shown, the present invention provides a method for suppressing springback of a novel mold, comprising the following steps:

[0023] S1: Manufacture the mold, determine the mold shape, specific structure, size and material used, set up a simulation model according to the mold to be manufactured, and adjust the process parameters of the simulation model until the values ​​of the process parameters and the preset parameter values ​​meet the standard requirements;

[0024] S2: Optimize the mold, set a moving module on the mold, set a push plate and a slide plate to compensate and suppress the rebound of the bending and deformation of the plate, and use strengthening technology at the rebound angle to suppress the bending and rebound of the plate;

[0025] S3: Surface treatment, using surface modification and coating technology, using laser surface treatment technology to form a surface structure with anti-adsorption and stress concentration reduction effects, and using thermal spraying technology to form a coating on the mold surface;

[0026] S4: Mould inspection: multiple rebound inspections are performed on the manufactured moulds. When using the mobile module, the push plate and the slide plate are used to compensate and suppress the rebound of the plate, and a variety of inspection data are obtained, and the average value of the inspection data is collected.

[0027] The simulation result in S1 is combined with preset requirements according to the adjusted parameters to obtain target process parameters corresponding to the minimum springback value, wherein the simulation model sets the gravity parameters of the simulation model according to the target sheet material properties of the mold.

[0028] Among them, the process parameters in S1 include pressure, friction coefficient and punching speed. According to the simulation model, the minimum and maximum values ​​of mold springback are obtained by testing, and the target plate processed by the mold is tested to make the plate adapt to the minimum and maximum values ​​of mold springback.

[0029] Among them, the moving module in S2 includes a lower movable punch and an upper flanging insert. In the simulation model, the moving modules are all matched with the target plate, and the plate is limited during the use of the mold; thereby improving the adaptability and rebound control effect of the mold.

[0030] Among them, a new material is set in S2, and the new material has special elasticity and stress deformation resistance characteristics. High-strength alloy steel is adopted, and the new material is used in the parts of the mold that contact the plate; after the mold is subjected to stress deformation, it can be restored to its original shape by heating, thereby ensuring the accuracy of the mold.

[0031] The surface modification in S3 is obtained through human experiments, and the mold is endowed with hydrophilicity, biocompatibility, antistatic properties and dyeing properties according to the target processing sheet of the mold.

[0032] Among them, the coating material used in the coating technology in S3 is diamond coating, a coating maintenance and repair mechanism is established, and the coating performance is tested, including hardness, wear resistance, corrosion resistance, and demolding performance, until the coating requirements meet the standards.

[0033] The mold detection in S4 includes detecting the springback effect of the mold, which is performed in a state where the mobile module is not used and in a state where the mobile module is used, and the springback values ​​are collected according to the two situations.

[0034] The average value of the detection data in S4 is compared with the preset minimum rebound value and maximum rebound value, so that the detection data is between the minimum rebound value and the maximum rebound value.

[0035] Among them, reinforcing ribs are added to the S2, and the reinforcing ribs are respectively arranged at the contact positions between the mold and the plate, and the inner wall thickness of the mold is increased by 2 to 5 cm. A cooling system is added to cool the mold after use in time; the thermal rebound of the mold is reduced, and the residual stress caused by temperature difference is reduced.

[0036] The working principle and use process of the present invention are as follows: in the process of manufacturing the mold, people set new materials to manufacture the mold, first determine the shape, specific structure, size and material used of the mold, set a simulation model according to the mold to be manufactured, and adjust the process parameters of the simulation model until the values ​​of the process parameters and the parameter values ​​preset by people reach the standard requirements, and set a mobile module in the process of optimizing the mold, and set a push plate and a slide plate to compensate and suppress the rebound of the bending and deformation parts of the plate, and use strengthening technology at the rebound angle to suppress the bending and rebound of the plate. Surface modification and coating technology are also cited, and laser surface treatment technology is used to form a surface structure with anti-adsorption and stress concentration reduction effects, and then the mold is surface treated, and a coating is formed on the mold surface using thermal spraying technology to increase the service life of the mold. Finally, during mold detection, multiple rebound detections are performed according to the manufactured mold. When using the mobile module, the push plate and the slide plate are used to compensate and suppress the rebound of the plate to obtain a variety of detection data, and the detection data can be between the thresholds set by people.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for suppressing springback of a new type of mold, characterized in that: The following steps are included: S1: Manufacture the mold, determine the mold shape, specific structure, size and material used, set up a simulation model according to the mold to be manufactured, and adjust the process parameters of the simulation model until the values ​​of the process parameters and the preset parameter values ​​meet the standard requirements; S2: Optimize the mold, set a moving module on the mold, set a push plate and a slide plate to compensate and suppress the rebound of the bending and deformation of the plate, and use strengthening technology at the rebound angle to suppress the bending and rebound of the plate; S3: Surface treatment, using surface modification and coating technology, using laser surface treatment technology to form a surface structure with anti-adsorption and stress concentration reduction effects, and using thermal spraying technology to form a coating on the mold surface; S4: Mould inspection: multiple rebound inspections are performed on the manufactured moulds. When using the mobile module, the push plate and the slide plate are used to compensate and suppress the rebound of the plate, and a variety of inspection data are obtained, and the average value of the inspection data is collected.

2. A method for suppressing springback of a new type of mold according to claim 1, characterized in that: The simulation result in S1 is based on the adjusted parameters and the preset requirements to obtain the target process parameters corresponding to the minimum springback value, wherein the simulation model sets the gravity parameters of the simulation model according to the target sheet material properties of the mold.

3. A method for suppressing springback of a new type of mold according to claim 1, characterized in that: The process parameters in S1 include pressure, friction coefficient and punching speed. The minimum and maximum values ​​of mold springback are obtained by testing according to the simulation model, and the target plate processed by the mold is tested to make the plate adapt to the minimum and maximum values ​​of mold springback.

4. A method for suppressing springback of a new type of mold according to claim 1, characterized in that: The moving module in S2 includes a lower movable punch and an upper flanging insert. The moving modules are all matched with the target plate in the simulation model, and the plate is limited during the use of the mold.

5. The method for suppressing springback of a new type of mold according to claim 1, characterized in that: The S2 is provided with a new material, and the new material has special elasticity and stress-deformation resistance characteristics, adopts high-strength alloy steel, and is used in the parts of the mold that contact the plate.

6. The method for suppressing springback of a new type of mold according to claim 1, characterized in that: The surface modification in S3 is obtained through human experiments, and the mold is endowed with hydrophilicity, biocompatibility, antistatic property and dyeing property according to the target processing plate of the mold.

7. The method for suppressing springback of a new type of mold according to claim 1, characterized in that: The coating technology in S3 uses diamond coating as the coating material, establishes a coating maintenance and repair mechanism, and tests the coating performance, including hardness, wear resistance, corrosion resistance, and demolding performance, until the coating requirements meet the standards.

8. The method for suppressing springback of a new type of mold according to claim 1, characterized in that: The mold detection in S4 includes detecting the springback effect of the mold, which is performed in a state where the mobile module is not used and in a state where the mobile module is used, and the springback values ​​are collected according to the two situations.

9. The method for suppressing springback of a new type of mold according to claim 1, characterized in that: The average value of the detection data in S4 is compared with the preset minimum rebound value and maximum rebound value, so that the detection data is between the minimum rebound value and the maximum rebound value.

10. The method for suppressing springback of a new type of mold according to claim 1, characterized in that: The S2 is provided with reinforcing ribs, which are respectively arranged at the contact positions between the mold and the plate, and the inner wall thickness of the mold is enlarged by 2 to 5 cm. A cooling system is added to cool the mold in time after use.

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