A method for manufacturing cold-stamped ultra-high-strength steel beam components

Through the dislocation forming process and forward flange technology, combined with simplified mold design, the problems of large rebound and unstable accuracy of ultra-high strength steel beam parts are solved, and efficient and low-cost manufacturing methods are realized, and product quality and processing efficiency are improved.

CN120055138BActive Publication Date: 2025-08-15GUANGZHOU GUANGQI OGIHARA DIE & STAMPING CO LTD
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Patent Information

Application Number
CN202510544098.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-04-28
Publication Date
2025-08-15
Estimated Expiration
2045-04-28

AI Technical Summary

Technical Problem

When manufacturing ultra-high strength steel beam parts, the existing technology has problems such as large rebound, complex mold structure, long processing cycle, high cost and unstable accuracy. Especially when the tensile strength is increased to above 1180Mpa, it is difficult to meet the quality requirements of the product.

Method used

The sidewall rebound is controlled by the misalignment forming process, and the accuracy is compensated by the forward flange process, combined with simplified mold structures such as quick disassembly modules and misaligned convex groove design, to achieve accurate forming of the product.

Benefits of technology

It significantly reduces the sidewall rebound of ultra-high strength steel beam components, simplifies the mold structure, shortens the processing cycle, reduces costs, and improves product accuracy and mold stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a method for manufacturing cold-stamped ultra-high-strength steel beam components, comprising: a first step of accurately blanking the product edge into place and punching the product side wall holes; a second step of forming the product main surface and flange into place and pre-forming the side wall; a third step of using a dislocation forming process to control the side wall springback; and a fourth step of punching the remaining holes on the product main surface. The present invention provides a method for manufacturing cold-stamped ultra-high-strength steel beam components, which mainly uses the dislocation forming technology to significantly reduce the side wall springback of ultra-high-strength steel beam components, and then achieves the product's precision requirements through the positive flanging process technology. The manufacturing method of the present invention has the following main advantages: the dislocation forming process mold structure is relatively simple, the processing assembly and assembly debugging cycle is shortened, the inspection and maintenance cost during mass production is low, and the positive flanging structure is simple and the probability of mold problems is relatively small.
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Description

Technical Field

[0001] The present invention relates to the technical field of automobile component forming, and more particularly to a method for manufacturing cold-stamped ultra-high-strength steel beam components. Background Art

[0002] Lightweighting is the future of automotive development. In recent years, ultra-high-strength steel has become the material of choice for green development in the automotive industry. As the tensile strength of steel increases, product springback increases, making springback compensation increasingly difficult. Especially when tensile strength rises above 1180 MPa, products experience serious precision issues such as concavity, springback, and distortion, making it difficult to meet product quality requirements with existing process technologies.

[0003] Among them, the existing process technology solution mainly uses a suspended wedge to adopt a negative angle compensation strategy for springback compensation. The entire process technology solution has the following four main shortcomings:

[0004] (1) The structure of the suspension wedge is complex, the processing and assembly and debugging cycle is long, the mold cost is high, the inspection and maintenance cost during mass production increases, and the probability of mold problems due to the complex structure is relatively high;

[0005] (2) During side shaping and springback compensation, the entire side wall and flange will undergo secondary forming, resulting in unstable product accuracy;

[0006] (3) When compensating for side shaping rebound, the entire side wall and flange must be re-grinded in each round of rebound rectification, which requires a lot of work for fitters and a long rectification cycle;

[0007] (4) The springback of ultra-high strength steel is large, and the negative angle compensation of side shaping is large, resulting in insufficient strength of the lower die core to meet mass production requirements.

[0008] Therefore, it is necessary to propose a method for manufacturing cold-stamped ultra-high-strength steel beam components to at least partially solve the problems existing in the prior art. Summary of the Invention

[0009] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0010] To at least partially solve the above problems, the present invention provides a method for manufacturing cold-stamped ultra-high-strength steel beam components, comprising:

[0011] In the first process, the product edge is accurately blanked and the side wall holes are punched;

[0012] In the second process, the main surface and flange of the product are formed in place, and the side wall is pre-formed;

[0013] In the third process, the offset forming process is used to control the side wall springback;

[0014] The fourth process is to punch the remaining holes on the main surface of the product.

[0015] According to the manufacturing method of cold-stamped ultra-high-strength steel beam components according to an embodiment of the present invention, the side wall springback is reduced by controlling the offset amount A and the size of the pre-forming R in the second process, and then the accuracy requirements are achieved through the positive flanging angle compensation in the third process.

[0016] According to the method for manufacturing cold-stamped ultra-high-strength steel beam components according to an embodiment of the present invention, the flanging tool block in the third step includes an R angle.

[0017] According to the method for manufacturing cold-stamped ultra-high-strength steel beam components according to an embodiment of the present invention, the third step is to perform a dislocation forming process on the product through a mold device.

[0018] According to the manufacturing method of cold-stamped ultra-high-strength steel beam components according to an embodiment of the present invention, the mold device includes a lower mold base, a lower mold core, an upper mold core, and an upper mold base. The lower mold core is arranged on the lower mold base, and the upper mold core is movably arranged in the upper mold base. Two flanging knife blocks are arranged in the upper mold base, and the upper mold core is located between the two flanging knife blocks. The product is arranged on the lower mold core, and the upper mold base moves downward to close the mold with the lower mold base, so that the lower mold core, the upper mold core, and the two flanging knife blocks complete the stamping of the product.

[0019] According to the manufacturing method of cold-stamped ultra-high-strength steel beam components of an embodiment of the present invention, a slide groove is arranged in the upper mold base, the upper mold core is slidably arranged in the slide groove, and an upper stop seat mechanism is arranged in the slide groove to support the upper mold core.

[0020] According to the manufacturing method of cold-stamped ultra-high-strength steel beam components according to an embodiment of the present invention, the upper baffle mechanism includes a spring seat and an upper baffle plate. The spring seat is provided with a plurality of spring units, and the spring seat is also provided with a guide block. The slide groove is provided with a spring groove corresponding to the spring unit and a guide groove corresponding to the guide block. The upper baffle plate is provided on the top of the upper mold seat and presses against the plurality of spring units.

[0021] According to the manufacturing method of cold-stamped ultra-high-strength steel beam components of an embodiment of the present invention, the bottom of the upper die core is provided with a dislocation convex body, and the lower die core is provided with a dislocation groove corresponding to the dislocation convex body.

[0022] According to the manufacturing method of cold-stamped ultra-high-strength steel beam components according to an embodiment of the present invention, the lower die core includes multiple lower modules, which are configured on the lower die base through a quick-release module. The quick-release module includes a quick-release shaft, a quick-release sleeve, and a quick-release cap. The lower die base is provided with a cap groove corresponding to the quick-release cap, and the lower module is provided with an opening groove corresponding to the quick-release sleeve. The quick-release sleeve extends into the quick-release cap through the opening groove, and the quick-release shaft is configured in the quick-release sleeve and connected to the quick-release cap.

[0023] According to the manufacturing method of cold-stamped ultra-high-strength steel beam components according to an embodiment of the present invention, a first inner cavity is provided in the quick-release cap, a plurality of second inner cavities are arranged on the inner wall of the first inner cavity, and the second inner cavity is connected to the upper surface of the quick-release cap through a vertical hole, a plurality of first springs and an inner pressure plate are arranged in the first inner cavity, the plurality of first springs are pressed against the inner pressure plate, a pressure rod is arranged in the vertical hole, and a tilting rod is also arranged in the second inner cavity, one end of the tilting rod corresponds to the bottom of the inner pressure plate, and the other end corresponds to the pressure rod, and a plurality of T-shaped opening grooves are also arranged on the sleeve body of the quick-release sleeve, and a T-shaped pressure block is arranged in the T-shaped opening groove, and the T-shaped pressure block corresponds to the inner pressure plate and is used to fix the quick-release shaft.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] The present invention provides a method for manufacturing cold-stamped ultra-high-strength steel beam components. The method mainly uses the offset forming technology to significantly reduce the side wall springback of the ultra-high-strength steel beam components, and then uses the positive flanging process technology to achieve the product precision requirements. The manufacturing method of the present invention has the following advantages: (1) the mold structure of the offset forming process is relatively simple, the processing assembly and assembly debugging cycle is shortened, the inspection and maintenance cost during mass production is low, and the probability of mold problems occurring due to the simple positive flanging structure is relatively small; (2) when the side wall springback is controlled, the flange surface of the product will not undergo secondary molding, and the product precision is stable; (3) when the side wall springback is controlled, the workload of each round of rectification is significantly reduced, which can effectively shorten the rectification cycle; (4) the springback of the offset forming process is small, and the strength of the lower die core is effectively guaranteed.

[0026] The manufacturing method of the cold-stamped ultra-high-strength steel beam components of the present invention, and other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by technical personnel in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 Flow chart of the manufacturing method of the present invention.

[0029] Figure 2 This is a schematic diagram of product stamping of the present invention.

[0030] Figure 3 This is a schematic diagram of the product flanging of the present invention.

[0031] Figure 4 It is a schematic diagram of the mold device structure in the present invention.

[0032] Figure 5 Schematic diagram of the internal cross-section of the mold device in the present invention.

[0033] Figure 6 Schematic diagram of the explosion structure of the mold device in the present invention.

[0034] Figure 7 It is a structural schematic diagram of the lower mold core in the present invention.

[0035] Figure 8 It is a structural schematic diagram of the upper mold base in the present invention.

[0036] Figure 9 It is a structural schematic diagram of the upper block mechanism in the present invention.

[0037] Figure 10 This is a schematic diagram of the exploded structure of the quick-release module in the present invention.

[0038] Figure 11 It is a structural schematic diagram of the quick-release cap in the present invention.

[0039] Figure 12 It is a structural schematic diagram of the quick release sleeve in the present invention.

[0040] Figure 13 This is a schematic diagram of the structure of the quick-release cap in the present invention. Figure 1 .

[0041] Figure 14 This is a schematic diagram of the structure of the quick-release cap in the present invention. Figure 2 .

[0042] Figure 15 This is a schematic diagram of the structure of the quick-release cap in the present invention. Figure 3 .

[0043] Figure 16 It is a structural schematic diagram of the quick-release shaft in the present invention. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0045] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0046] like Figure 1-Figure 3 As shown, the present invention provides a method for manufacturing cold-stamped ultra-high-strength steel beam components, comprising: a first process, which is an OP05 process (blanking + punching), in which the product edge is accurately blanked and the side wall holes of the product are punched;

[0047] The second process is the OP10 process (preforming), which forms the main surface and flange of the product into place and preforms the side wall;

[0048] The third process is the OP20 process (offset flanging), which uses an offset forming process to control side wall springback;

[0049] The fourth process is the OP30 process (punching), which punches the remaining holes on the main surface of the product.

[0050] The present invention provides a manufacturing method for cold-stamped ultra-high-strength steel beam components. The main surface springback is directly compensated for in the OP10 pre-forming process; the flange surface springback is directly compensated for in the OP10 pre-forming process; further, the side wall springback is reduced by controlling the offset A and the size of the pre-forming R2 in the OP10 pre-forming process (the side wall spread angle Q must take into account the problem of feeding interference, the line length of segment A is the key parameter for offset forming, the size of R2 is the key parameter for springback control, and the distance from the stop line of R2 to the hole S must also be considered to ensure the flatness of the punching surface). Then, the precision requirements are achieved through positive flanging angle compensation in the OP20 process. The flanging tool block 41 in the third process includes an R angle, that is, the flanging tool block 41 in the OP20 process includes an R angle (that is, the R angle needs to be secondary formed).

[0051] The range of the above key parameter A is selected as 8-14mm, and the range of R2 is selected as 4-10mm. Simulation is performed in CAE software. Preferably, the value of A is 11.35mm; preferably, the value of R2 is 4.25mm, so as to meet the manufacturing requirements of the product.

[0052] The present invention provides a method for manufacturing cold-stamped ultra-high-strength steel beam components. This method significantly reduces the springback of the sidewalls of ultra-high-strength steel beam components by utilizing a dislocation forming technique. Furthermore, the product's precision requirements are achieved through a positive flanging process. The manufacturing method of the present invention has the following advantages:

[0053] (1) The mold structure of the dislocation forming process is relatively simple, the processing assembly and debugging cycle is shortened, the inspection and maintenance cost during mass production is low, and the probability of mold problems occurring due to the simple positive flanging structure is relatively small;

[0054] (2) When the side wall rebound is controlled, the flange surface of the product will not undergo secondary molding, and the product precision is stable;

[0055] (3) When controlling the side wall rebound, the workload of each round of rectification is greatly reduced, which can effectively shorten the rectification cycle;

[0056] (4) The springback of the dislocation forming process is small, and the strength of the lower die core 2 is effectively guaranteed.

[0057] like Figure 4-Figure 9 As shown, further, the third process mentioned above performs a dislocation forming process on the product 200 through the mold device 100. The mold device 100 can better realize the dislocation forming of the product 200. Specifically, the mold device 100 includes a lower mold base 1, a lower mold core 2, an upper mold core 3, and an upper mold base 4, wherein the lower mold core 2 is installed on the lower mold base 1, and the upper mold core 3 is movably installed in the upper mold base 4. Here, two flanging knife blocks 41 are installed in the upper mold base 4, and the upper mold core 3 is located between the two flanging knife blocks 41. The product 200 is on the lower mold core 2, so when the upper mold base 4 moves downward to close the mold with the lower mold base 1 , the upper die core 3 first contacts and punches the product 200 to prevent the product 200 from moving, and then as the upper die base 4 continues to move downward, the flanging knife blocks 41 on both sides of the upper die core 3 also contact the product 200, and the upper die base 4 continues to move downward, and the flanging knife blocks 41 complete the downward stamping and flanging of the product 200, so that the lower die core 2, the upper die core 3, and the two flanging knife blocks 41 complete the stamping of the product 200, and the staggered forming process is used between the lower die core 2 and the upper die core 3 to control the side wall rebound.

[0058] Furthermore, a slide groove 42 is opened in the upper mold base 4, and the upper mold core 3 is slidably installed in the slide groove 42, and an upper stop seat mechanism 43 is also installed in the slide groove 42 to support the upper mold core 3. Here, the upper stop seat mechanism 43 provides elastic support for the upper mold core 3. The upper mold core 3 can better fix the product 200 to prevent the product 200 from moving and affecting the stamping effect.

[0059] Furthermore, the above-mentioned upper block mechanism 43 includes a spring seat 44 and an upper baffle 45. Here, the spring seat 44 has multiple spring units 441, and the spring seat 44 is also equipped with a guide block 442. A spring groove 421 corresponding to the spring unit 441 and a guide groove 422 corresponding to the guide block 442 are installed in the slide groove 42. The upper baffle 45 is installed on the top of the upper mold seat 4 and presses against the multiple spring units 441. Here, when the upper mold core 3 contacts and presses against the product 200, as the upper mold seat 4 moves downward, the internal spring unit 441 provides elastic support to the upper mold core 3. Here, the spring unit 441 preferably adopts a nitrogen spring; and the guide block 442 provides a guiding effect for the movement of the upper mold core 3, so that the upper mold core 3 moves up and down more smoothly to avoid jamming.

[0060] Furthermore, there is an offset convex body 31 at the bottom of the upper mold core 3, and correspondingly, there is an offset groove 201 on the lower mold core 2. The offset groove 201 corresponds to the offset convex body 31, so when the upper mold core 3 contacts the product 200, the product 200 is stamped and fixed to the lower mold core 2, and the offset forming process of the product 200 is realized through the cooperation of the offset groove 201 and the offset convex body 31; as the upper mold base 4 and the lower mold base 1 are closed, the two flanging knife blocks 41 flanging the product 200, thereby achieving the purpose of the third process.

[0061] Exemplary quick-release module

[0062] like Figures 10-16 As shown, further, some embodiments of the present invention provide a specific structure of the above-mentioned lower mold core 2, where the lower mold core 2 of this structure includes multiple lower modules 21, and multiple lower modules 21 are installed on the lower mold base 1 in sequence. Since a large number of products need to be produced, the mold will be worn during use, resulting in a decrease in precision, so it is necessary to frequently disassemble the mold for repair and replacement. Generally speaking, the wing seats 211 on both sides of the lower module 21 are fixed to the threaded holes of the lower mold base 1 by screws, but since the above situation requires frequent disassembly, thread slippage is inevitable, so here a quick-release module 22 is used instead of screws to avoid vibration when the upper mold core 3 and the lower mold core 2 are in contact with each other to form the misalignment of the product 200, or to cause the lower mold core 2 to loosen and affect the quality of the misalignment forming of the product 200.

[0063] Specifically, the wing seat 211 of the lower module 21 is installed on the lower mold base 1 through the quick-release module 22, wherein the quick-release module 22 includes a quick-release shaft 23, a quick-release sleeve 24, and a quick-release cap 25. A cap groove corresponding to the quick-release cap 25 is opened on the lower mold base 1, so the quick-release cap 25 can be fixedly installed in the cap groove, and an open groove corresponding to the quick-release sleeve 24 is opened on the wing seat 211 of the lower module 21. The quick-release sleeve 24 extends downward into the quick-release cap 25 through the open groove, and then the quick-release shaft 23 needs to be installed in the quick-release sleeve 24 and connected with the quick-release cap 25. Here, the lower module 21 is pressed on the quick-release cap 25, and the weight of the lower module 21 acts on the quick-release cap 25, so that the quick-release cap 25 fixes the quick-release shaft 23 and the quick-release sleeve 24. Therefore, there is no need for threaded connection between the quick-release shaft 23, the quick-release sleeve 24, and the quick-release cap 25, and then it is convenient to disassemble and repair the lower module 21 later.

[0064] Exemplary quick-release cap

[0065] like Figure 11-Figure 15 As shown, further, some embodiments of the present invention provide a specific structure of the quick-release cap 25, wherein the quick-release cap 25 has a first inner cavity 251, and the inner wall of the first inner cavity 251 has multiple second inner cavities 252, and multiple first springs 254 and an inner pressure plate 255 are installed in the first inner cavity 251, and the multiple first springs 254 are pressed against the inner pressure plate 255, and the second inner cavity 252 is connected to the upper surface of the quick-release cap 25 through a vertical hole 253, and a pressure plate 255 is installed in the vertical hole 253. Rod 256, a rocker member 257 is also installed in the second inner cavity 252, and the rocker member 257 can swing up and down in the second inner cavity 252 through the shaft body 2521, so one end of the rocker member 257 corresponds to the bottom of the inner pressure plate 255, and the other end corresponds to the pressure rod 256, and a plurality of T-shaped opening grooves 242 are also provided on the sleeve body 241 of the quick release sleeve 24, and T-shaped pressure blocks 243 are installed in the T-shaped opening grooves 242, and the T-shaped pressure blocks 243 correspond to the inner pressure plate 255 and are used to fix the quick release shaft 23.

[0066] When the lower module 21 presses the above-mentioned pressure rod 256, the pressure rod 256 pushes against the tilting rod 257, so that one end of the tilting rod 257 is tilted and pushes against the inner pressure plate 255, and then the quick-release shaft 23 is installed in the quick-release sleeve 24. After the quick-release shaft 23 enters the quick-release sleeve 24, it pushes against multiple T-shaped pressure blocks 243, so that the T-shaped pressure blocks 243 will move into the first inner cavity 251 and press against the inner pressure plate 255, and then multiple T-shaped pressure blocks 243 will fix the quick-release shaft 23 in the quick-release sleeve 24, so that the quick-release cap 25 fixes the quick-release shaft 23 and the quick-release sleeve 24, and the quick-release shaft 23 can be pulled out of the quick-release sleeve 24 later, so that the quick-release shaft 23 and the quick-release sleeve 24 can be separated. There is no need for a threaded connection between the quick-release caps 25 to avoid slippage, and it is also convenient to disassemble and repair the lower module 21 later.

[0067] In addition, the second inner cavity 252 is also provided with a tension spring 2531, which is connected to the bottom of the pressure rod 256. When the quick-release shaft 23 is pulled out and the lower module 21 is moved upward, the pressure rod 256 extends upward from the vertical hole 253 under the action of the tension spring 2531, and the multiple first springs 254 inside push down against the inner pressure plate 255, and then the inner pressure plate 255 drives the multiple T-shaped pressure blocks 243 to return to the T-shaped opening groove 242, and the other end of the tilting rod 257 also tilts upward.

[0068] Furthermore, in some embodiments of the present invention, the T-shaped pressure block 243 is connected to the T-shaped opening groove 242 through multiple second springs 244, so that the T-shaped pressure block 243 can have a pulling force to return to the T-shaped opening groove 242, so that multiple T-shaped pressure blocks 243 can push and fix the pressure rod 256 entering the interior to prevent it from loosening; further, the upper end of the T-shaped pressure block 243 has a first wedge-shaped surface facing the inner pressure plate 255, and the inner pressure plate 255 has a second wedge-shaped surface corresponding to the first wedge-shaped surface, so when the T-shaped pressure block 243 moves toward the inner pressure plate 255 under the action of the pressure rod 256, the two push against each other, which makes the multiple T-shaped pressure blocks 243 more firmly push and fix the pressure rod 256 entering the interior to prevent it from loosening.

[0069] like Figure 16As shown, further, in some embodiments of the present invention, the inner wall of the quick-release sleeve 24 has an aligning protrusion 245 corresponding to the T-shaped opening groove 242, and the outer wall of the quick-release shaft 23 has an aligning groove 231 corresponding to the aligning protrusion 245, wherein the aligning groove 231 is divided into three sections, a first section groove 2311, a second section groove 2312, and a third section groove 2313, and the second section groove 2312 is located between the first section groove 2311 and the third section groove 2313. In this way, the quick-release shaft 23 enters the quick-release sleeve 24, and the aligning protrusion 245 enters the first section groove 2311 through the third section groove 2313 and the second section groove 2312, so that the third section groove 2313 in the quick-release shaft 23 corresponds to the T-shaped pressure block 243, which facilitates the installation of the quick-release shaft 23 and prevents the quick-release shaft 23 from moving, thereby fixing the lower module 21 on the lower mold base 1.

[0070] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0071] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0072] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A method for manufacturing cold stamped ultra-high strength steel beam components, characterized in that: include: In the first process, the product edge is accurately blanked and the side wall holes are punched; In the second process, the main surface and flange of the product are formed in place, and the side wall is preformed. The springback of the side wall is reduced by controlling the offset amount A and the size of the preform R2 in the second process. The range of the offset amount A is 8-14mm, and the range of the preform R2 is 4-10mm. The third process, offset flanging, uses an offset forming process to control side wall springback, and achieves precision requirements through positive flanging angle compensation in the third process; The fourth process is to punch the remaining holes on the main surface of the product; The third process is to perform a dislocation forming process on the product through a mold device, wherein the mold device includes a lower mold base, a lower mold core, an upper mold core, and an upper mold base, the lower mold core is arranged on the lower mold base, and the upper mold core is movably arranged in the upper mold base, the lower mold core includes multiple lower modules, and the lower modules are arranged on the lower mold base through a quick-release module, the quick-release module includes a quick-release shaft, a quick-release sleeve, and a quick-release cap, the quick-release cap has a first inner cavity, the inner wall of the first inner cavity is provided with multiple second inner cavities, and the second inner cavity is connected with the upper surface of the quick-release cap through a vertical hole, a plurality of first springs and an inner pressure plate are arranged in the first inner cavity, the multiple first springs press against the inner pressure plate, a pressure rod is arranged in the vertical hole, and the second inner cavity is also provided with a tilting rod, one end of the tilting rod corresponds to the bottom of the inner pressure plate, and the other end corresponds to the pressure rod, the quick-release sleeve body is also provided with multiple T-shaped opening slots, and a T-shaped pressure block is arranged in the T-shaped opening slot, the T-shaped pressure block corresponds to the inner pressure plate and is used to fix the quick-release shaft; After the lower module presses the above-mentioned pressure rod, the pressure rod pushes against the tilting rod part, and one end of the tilting rod part is tilted up and pushes against the inner pressure plate, and then the quick-release shaft is installed into the quick-release sleeve. After the quick-release shaft enters the quick-release sleeve, it pushes against multiple T-shaped pressure blocks, and the T-shaped pressure blocks move into the first inner cavity and press against the inner pressure plate. Then, multiple T-shaped pressure blocks fix the quick-release shaft in the quick-release sleeve, so that the quick-release cap fixes the quick-release shaft and the quick-release sleeve. Subsequently, the quick-release shaft can be pulled out of the quick-release sleeve to realize the separation of the quick-release shaft and the quick-release sleeve.

2. The method for manufacturing cold-stamped ultra-high-strength steel beam components according to claim 1, characterized in that: The flanging tool block in the third process includes an R angle.

3. The method for manufacturing cold-stamped ultra-high-strength steel beam components according to claim 1, characterized in that: There are two flanging knife blocks in the upper mold base, the upper die core is located between the two flanging knife blocks, the product is placed on the lower die core, and the upper mold base moves downward to close the mold with the lower mold base, so that the lower die core, the upper die core and the two flanging knife blocks complete the stamping of the product.

4. The method for manufacturing cold-stamped ultra-high-strength steel beam components according to claim 3, characterized in that: A slide groove is arranged in the upper mold base, the upper mold core is slidably arranged in the slide groove, and an upper blocking seat mechanism for abutting the upper mold core is arranged in the slide groove.

5. The method for manufacturing cold stamped ultra-high strength steel beam components according to claim 4, characterized in that: The upper block mechanism includes a spring seat and an upper baffle. The spring seat is provided with multiple spring units, and the spring seat is also provided with a guide block. The slide groove is provided with a spring groove corresponding to the spring unit and a guide groove corresponding to the guide block. The upper baffle is provided on the top of the upper mold seat and presses against the multiple spring units.

6. The method for manufacturing cold-stamped ultra-high-strength steel beam components according to claim 3, characterized in that: The bottom of the upper die core is provided with a dislocation convex body, and the lower die core is provided with a dislocation groove corresponding to the dislocation convex body.

7. The method for manufacturing cold-stamped ultra-high-strength steel beam components according to claim 3, characterized in that: The lower mold base is provided with a cap groove corresponding to the quick release cap, and the lower module is provided with an opening groove corresponding to the quick release sleeve. The quick release sleeve extends into the quick release cap through the opening groove, and the quick release shaft is provided in the quick release sleeve and connected to the quick release cap.

Citation Information

Patent Citations

  • Springback control method for flanging process of high-strength steel plate

    CN111842590A

  • Bending device convenient to adjust and used for metal material machining

    CN112517683A

  • High-strength plate beam part forming process and stamping die

    CN118558844A