A high-strength automotive door pillar processing method and mold

Abstract

This invention relates to the field of automotive parts processing technology, and discloses a high-strength automotive door pillar processing method and mold, specifically including the following steps: S1, selecting a corresponding stamping door pillar mold and installing the mold on a stamping equipment; S2, selecting the stamping processing mode according to the model of the door pillar to be stamped; S3, selecting the stamping stress points of the door pillar according to the strength requirements of different parts of the door pillar, forming stamping points, and setting the stamping strength parameters of the stamping points; S4, setting the stamping parameters according to the stamping strength of different parts of the door pillar; S5, placing the sheet metal and starting the stamping equipment, stamping the sheet metal according to the set stamping parameters to obtain the formed automotive door pillar. This application, through analysis of the strength requirements of different positions of the door ring, adds targeted patch plates to meet the door ring strength requirements and enhance the safety performance of the vehicle. At the same time, it can also reduce the material used for patch plates, effectively reducing the overall weight of the door ring and achieving the requirements of vehicle body lightweighting.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, specifically to a high-strength automotive door pillar processing method and mold. Background Technology

[0002] With the emergence of the concept of new energy vehicles, their development has accelerated rapidly. Simultaneously, the demand for lightweighting in new energy vehicles is increasing. Lightweighting aims to reduce the vehicle's curb weight as much as possible while maintaining its strength and safety performance, thereby improving its power. Research shows that reducing a car's weight by 10% can improve its energy economy by 6%-8%, while also reducing emissions. Currently, due to significant environmental protection and energy consumption issues, achieving lightweight, high-speed, and high-power vehicles has become particularly important.

[0003] In the overall architecture of a car, the body accounts for approximately 30% of its total mass, and under unloaded conditions, about 70% of the energy consumption is attributed to the body's weight. Therefore, to achieve vehicle lightweighting, reducing the weight of the body is crucial for the overall vehicle design. As the basic framework of the vehicle, the body must maintain overall strength while reducing weight to improve vehicle safety. In existing lightweighting technologies, reducing the weight of the door pillars is a common approach. However, improving door pillar strength often involves adding patches to the areas requiring increased strength. But adding patches increases the weight of the door pillar, reducing the effectiveness of lightweighting. Conversely, without patches, the overall strength of the door pillars may not meet requirements.

[0004] Therefore, to address the issue that door pillars require additional patches to increase strength without improving lightweighting, a high-strength automotive door pillar processing method and mold are needed. Summary of the Invention

[0005] The present invention aims to provide a high-strength automotive door pillar processing method and mold to solve the problem of insufficient lightweighting effect of door pillars.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This invention relates to a method for improving the strength of automotive door pillars through stamping, specifically a method for processing high-strength automotive door pillars, comprising the following steps:

[0008] S1. Select the appropriate stamping door post mold and install the mold on the stamping equipment accordingly;

[0009] S2, Select the stamping processing mode according to the model of the door post to be stamped;

[0010] S3. Based on the strength requirements of different parts of the gatepost, select the gatepost stamping stress points to form stamping points, and set the stamping strength parameters of the stamping points according to the stamping points.

[0011] S4, set the stamping parameters according to the stamping intensity of different parts of the gatepost;

[0012] S5, place the sheet metal and start the stamping equipment. Stamp the sheet metal according to the set stamping parameters to obtain the formed car door pillar.

[0013] The principles and advantages of this scheme are:

[0014] Based on the strength requirements of different locations on the door pillar, different stamping stress points are set on the door pillar to form stamping points. The stamping intensity is then set according to the strength of each stamping point. By varying the stamping intensity, different strength parameters are formed at each location on the door pillar. Combined with stamping operation parameters, different degrees of stamping processes are set for each stamping point, thereby meeting the strength requirements of different locations on the door pillar. The strength of the door pillar can be improved through stamping alone, without the need for additional patches. While meeting the strength requirements of the door pillar, the overall weight of the door pillar is also reduced, thus improving the lightweight performance of the vehicle.

[0015] It's worth noting that, generally, to improve the lightweight performance of new energy vehicles while maintaining overall vehicle strength, it's believed that only by reducing the overall weight of the door pillars and thickening the areas requiring reinforcement can overall weight reduction and localized strengthening be achieved. This approach involves the conventional method of patching different parts. However, this application does not adopt this conventional approach. Instead, it creatively proposes a method to strengthen the door pillars by adjusting the stamping process according to the strength requirements of different locations. This eliminates the need for patches while meeting the strength requirements of the door pillars, thus solving the problem of hydrogen embrittlement and effectively reducing the weight of the door pillars, thereby reducing the overall weight of the vehicle body and improving its lightweight performance.

[0016] Preferably, as an improvement, the processing mode includes selecting the gatepost model and setting basic stamping parameters. First, the stamping equipment is set with basic parameters according to the processing requirements of the gatepost model. This allows for quick and coarse setting of the processing parameters. Then, within the range of the coarse setting, the parameters that need adjustment are fine-tuned, thereby improving production efficiency. At the same time, it also ensures the accuracy of the parameter settings, ensuring that the stamping parameters remain within a controllable range during processing, reducing processing errors, and thus ensuring processing stability.

[0017] Preferably, as an improvement, in S3, the number of stamping points is set to 2-6, including upper stamping points and lower stamping points. The number and location of the stamping points are precisely determined according to the strength requirements of different positions on the door pillar. Based on the position of the door pillar within the car door, and according to the strength requirements of each position, the stamping points are respectively set on the upper and lower sides of the door pillar to ensure the strength requirements of each side of the door pillar, while also covering the strength requirements around the stamping points. During stamping, the stamping points ensure that the stamping force around the points is balanced, thereby guaranteeing the stamping effect.

[0018] Preferably, as an improvement, the stamping strength parameter range for each point is 150T-400T. The strength requirements for a gatepost are generally between 800MPa and 1500MPa; however, in order to meet the gatepost strength requirements during stamping, while also considering the temperature and hardness of the sheet metal during stamping, the stamping strength parameter for each point is set within the range of 150T-400T. This ensures the strength of each point and its surrounding area without causing over-stamping, which could lead to excessive hardening or deformation of the sheet metal, thereby affecting the gatepost's forming performance.

[0019] Preferably, as an improvement, in step S4, the stamping parameters include stamping duration and stamping temperature. To better meet the strength requirements of each stamping point, the stamping parameters are set according to the strength of each stamping point, ensuring that the stamping duration and temperature of the gatepost are appropriate, thereby improving the accuracy of the gatepost and ensuring the strength stability of the gatepost during forming. Simultaneously, to enhance the strength of the gatepost, cooling and quenching are performed during the stamping process to improve the overall strength of the gatepost.

[0020] Preferably, as an improvement, the stamping time is set according to the location of the stamping point and the current temperature of the stamping point; the stamping temperature is set according to the strength requirements of different locations. During stamping, since the temperature of each location on the sheet metal varies, and since the required strength differs, the stamping time directly affects the forming effect of the sheet metal. The stamping temperature affects the stress during stamping, causing differences in the stamping force on each part, resulting in different strengths under different forming effects.

[0021] Preferably, as an improvement, the stamping time is set to 3s-16s; the stamping temperature is set to 920℃-950℃. To ensure the gatepost's strength meets minimum requirements, the stamping time must not be less than 3s; the stamping temperature must not be less than 920℃. Simultaneously, to prevent errors during stamping that could lead to over-stamping and damage to the stamping equipment and sheet metal, and to avoid heat loss and reduce the impact of high temperatures on the stamping equipment, the stamping time must not exceed 16s; the stamping temperature must not exceed 950℃. This ensures the stamping effect, guarantees the gatepost's strength requirements, and extends the equipment's service life.

[0022] Accordingly, the present invention also provides a high-strength automotive door pillar processing mold, applied to the aforementioned high-strength automotive door pillar processing method, specifically including an upper mold and a lower mold that cooperate with each other; the upper mold includes an upper mold body, and the upper mold body has an arc-shaped groove; the arc-shaped groove includes an upper arc surface and a lower arc surface; the upper arc surface has multiple stress-bearing sections; the lower arc surface has multiple reinforcing sections; the lower mold includes a lower mold body, and the lower mold body has a convex block, the convex block being correspondingly arranged with respect to the arc-shaped groove. The convex block has an arc-shaped structure; the convex block has multiple support sections corresponding to the stress-bearing sections, and multiple forming sections corresponding to the reinforcing sections.

[0023] Implementing this invention has the following beneficial effects:

[0024] This application incorporates multiple stress-bearing and reinforcing sections based on the varying strength requirements of different parts of the door pillar. This ensures that the die effectively stamps the corresponding locations during the stamping process. Consequently, it guarantees that the appropriate stamping pressure is achieved at each stamping point on the door pillar, thus meeting the strength requirements of different parts. Furthermore, it eliminates the need for additional patching on the door pillar, effectively reducing its overall weight while meeting strength requirements and improving the overall lightweight performance of the vehicle.

[0025] Preferably, as an improvement, the number of stress-bearing sections is set to 2-4; the number of reinforcing sections is set to 1-3. Too many stress-bearing sections will affect the stamping operation, while too few will not meet the strength requirements of each part of the goalpost. Meanwhile, the reinforcing sections are designed to increase the strength of corresponding parts of the goalpost without requiring additional patches. Therefore, to meet the strength requirements of the goalpost, reinforcing sections are set in the areas where strength improvement is needed, and the strength of these sections is increased through stamping.

[0026] Preferably, as an improvement, the length of the load-bearing section is 80-150mm and the thickness is 0.9-4mm; the length of the reinforcing section is 300-600mm and the thickness is 0.9-4mm. To ensure the strength requirements of the load-bearing and reinforcing sections, the thickness of both sections needs to reach 0.9mm. Simultaneously, the area between the two load-bearing sections also needs to meet strength requirements. When selecting the load-bearing section, the corresponding central position is chosen based on the strength requirements of different locations on the goalpost. To ensure that the load-bearing section can cover the areas requiring reinforcement through patches, the length of the load-bearing section needs to reach 80mm. However, to reduce the overall weight of the goalpost and ensure necessary strength requirements, the length of the load-bearing section should not exceed 150mm; the thickness of the load-bearing section should not exceed 4mm; and the thickness of the reinforcing section should not exceed 4mm. To improve the strength of the goalpost without adding additional patches, the length of the reinforcing section needs to reach 300mm; while also meeting the requirements for lightweighting, the length should not exceed 600mm. Attached Figure Description

[0027] Figure 1 This is a logic diagram of a first embodiment of a high-strength automotive door pillar processing method according to the present invention;

[0028] Figure 2 This is a schematic diagram showing the position of the door pillar stamping point in Embodiment 1 of a high-strength automotive door pillar processing mold of the present invention;

[0029] Figure 3 This is a structural diagram of the upper mold in Embodiment 1 of a high-strength automotive door pillar processing mold of the present invention;

[0030] Figure 4 This is a structural diagram of the lower mold in Embodiment 1 of a high-strength automotive door pillar processing mold of the present invention. Detailed Implementation

[0031] The following detailed description illustrates the specific implementation method:

[0032] The reference numerals in the accompanying drawings include: upper stamping point 1, lower stamping point 2, upper mold 3, lower mold 4, arc groove 5, upper arc surface 6, lower arc surface 7, stress section 8, reinforcing section 9, convex block 10, support section 11, forming section 12.

[0033] Example 1

[0034] The basics are as follows: Figure 1 The diagram illustrates a high-strength automotive door pillar processing method. During the door pillar stamping process, different stamping parameters are set according to the strength requirements of different locations on the door pillar. This allows for direct strength processing of different parts of the door pillar during stamping, eliminating the need for additional patching processes, improving the lightweight performance of the door pillar, and saving production costs. Specifically, the method includes the following steps:

[0035] Step 1: Select the appropriate stamping die according to the type of gatepost to be processed, and install it on the stamping equipment. At the same time, import the corresponding gatepost processing drawings.

[0036] Step two: Select the processing mode of the stamping equipment according to the type of gatepost being processed. The processing mode is a one-click selection method, mainly used for coarse parameter settings of the stamping equipment, so that operators can quickly adjust the equipment parameter information to the required range, thereby saving adjustment time and improving work efficiency.

[0037] Specifically, the processing mode includes gatepost model selection and basic stamping parameter settings. The gatepost model is selected based on different production needs, specifically by importing gatepost production process drawings to create gatepost model options. During production, the stamping equipment, based on the imported gatepost production process drawings and historical stamping parameter data, generates gatepost model information selection items, such as three-seat type-A-pillar, seven-seat type-A-pillar, etc.; and simultaneously generates the basic stamping parameters for the corresponding gatepost model. During the stamping process, stamping operations will be performed on stamping positions that have not been specially configured according to the data of the basic stamping parameters. The basic stamping parameters include basic stamping strength, basic stamping duration, and basic stamping temperature.

[0038] Meanwhile, the basic stamping strength range is set to 150T-450T, the basic stamping duration range is set to 3s-20s, and the basic stamping temperature range is set to 900℃-960℃. If a three-seat A-pillar door pillar model is selected, the basic stamping parameters will automatically adjust to a basic stamping strength of 300T, a basic stamping duration of 10s, and a basic stamping temperature of 930℃. This allows for quick setting of stamping parameter values. Under these basic stamping parameter settings, the operating parameters of the stamping equipment can be kept within a controllable range, preventing over-operation that could affect the quality of the finished product. It also avoids operational errors caused by equipment malfunctions, effectively controlling the operation process. Furthermore, it simplifies the parameter adjustment process, allowing operators to quickly set up the stamping equipment and improve production efficiency.

[0039] Step 3: After setting the basic stamping parameters, select the stamping stress points of the gatepost according to the strength requirements of each part, forming stamping points, and set the stamping strength parameters for each stamping point. In this embodiment, as shown in the attached figure... Figure 2As shown, there are 2-6 stamping points, including upper stamping point 1 and lower stamping point 2. There are 3 upper stamping points 1 and 2 lower stamping points 2. The upper stamping points 1 are located on the upper side of the gatepost; the lower stamping points 2 are located on the lower side of the gatepost. Each stamping point is determined based on the strength requirements of different locations on the gatepost. Specifically, the gatepost is divided into 5 segments according to different parts. The center point of each segment is determined based on its strength requirements. This center point is then used as the stamping force point for that segment. The stamping points are then divided according to the strength requirement parameters. This effectively ensures uniform force distribution in that segment, maximizes the force at the stamping force point, and results in the highest forming strength of the stamping point, thus ensuring that the strength of that segment meets the strength requirements.

[0040] Specifically, the stamping strength parameter range for the specified points is set to 150T-400T. In this embodiment, the stamping strength parameter for the upper stamping point 1 is set to 200T, and the stamping strength parameter for the lower stamping point 2 is set to 400T. This satisfies the strength requirements of the upper side of the gatepost having a tensile strength ≥1800MPa, a yield strength ≥1200MPa, and an elongation ≥4%; and the lower side having a tensile strength ≥1840MPa, a yield strength ≥1600MPa, and an elongation ≥4%. This improves the strength performance of the gatepost and effectively reduces its weight, thus enhancing its lightweight performance.

[0041] Step four: Set the stamping operation parameters for each stamping point according to the stamping strength parameters of different parts of the gatepost. The stamping operation parameters include stamping duration and stamping temperature. The stamping duration is set to 3s-16s; the stamping temperature is set to 920℃-950℃. In this embodiment, the stamping duration for the upper stamping point 1 is 10s; the stamping temperature is 920℃; the stamping duration for the lower stamping point 2 is 13s; the stamping temperature is 940℃. Specifically, during stamping, the stamping duration is adjusted by adjusting the height of the insert at the corresponding position on the mold; the stamping temperature is adjusted by adjusting the water flow speed of the cooling water channel at the corresponding position in the mold. This directly improves the strength performance of the gatepost during the stamping process, thereby meeting the gatepost strength requirements. It also eliminates the need for additional patching of the gatepost, effectively reducing the overall weight of the gatepost, improving its lightweight effect, and effectively solving the problem of brittleness in the gatepost; improving product quality and increasing production efficiency.

[0042] Step five: After setting the parameters, place the sheet metal and start the stamping equipment. The stamping equipment will stamp the sheet metal according to the set stamping parameters to obtain a car door pillar that meets the strength requirements. This ensures the door pillar meets the strength requirements and effectively reduces the overall weight of the door pillar, improving its lightweight performance.

[0043] Meanwhile, this invention also provides a high-strength automotive door pillar processing mold, applied to the aforementioned high-strength automotive door pillar processing method, to meet the strength requirements of different positions on the door pillar during hot stamping, thereby reducing the need for patching, improving door pillar strength, and enhancing the lightweight performance of the vehicle. Specifically, it includes an upper mold 3 and a lower mold 4 that cooperate with each other; as shown in the attached figure. Figure 3 As shown, the upper mold 3 includes an upper mold body and an arc-shaped groove 5 disposed within the mold body. The arc-shaped groove 5 is composed of a die insert and a pressure insert. The height of the corresponding stamping position can be adjusted by adjusting the height of the die insert, thereby adjusting the stamping time of that part. The arc-shaped groove 5 includes an upper arc surface 6 and a lower arc surface 7. The upper arc surface 6 is provided with multiple stress-bearing sections 8; the lower arc surface 7 is provided with multiple reinforcing sections 9. The stress-bearing sections 8 correspond to the upper stamping point 1, and the reinforcing sections 9 correspond to the lower stamping point 2. In this embodiment, there are 2-4 stress-bearing sections 8 and 1-3 reinforcing sections 9. According to the strength requirements of different positions of the doorpost, the stress-bearing sections 8 and reinforcing sections 9 are respectively disposed on the upper arc surface 6 and the lower arc surface 7 to ensure uniform stress during stamping, prevent deformation during the stamping process, and at the same time ensure the strength requirements of each section of the doorpost, thereby improving the strength of the doorpost.

[0044] Specifically, the arc-shaped groove 6 includes a main arc-shaped groove and a supporting arc-shaped groove. The supporting arc-shaped groove is located at the lower part of the main arc-shaped groove; two force-bearing sections 8 are provided on the upper side of the main arc-shaped groove; one force-bearing section 8 is located on the upper side of the supporting arc-shaped groove; and a reinforcing section 9 is located on the lower side of the main arc-shaped groove. The length of the force-bearing section 8 is 80-150mm, and the thickness is 0.9-4mm; in this embodiment, the length of the force-bearing section 8 is 100mm, and the thickness is 2mm. The length of the reinforcing section 9 is 300-600mm, and the thickness is 0.9-4mm; in this embodiment, the length of the reinforcing section 9 is 400mm, and the thickness is 3.5mm.

[0045] For details, see attached. Figure 4As shown, the lower mold 4 includes a lower mold body, on which a convex block 10 corresponding to the arc-shaped groove 5 of the upper mold is provided. It also includes positioning pins and positioning devices. Four positioning pins are respectively located around the lower mold body; the positioning devices are groove structures located on both sides of the lower mold body; they are used to engage with the upper mold to prevent displacement and ensure stamping accuracy. The convex block 10 consists of a punch insert and a pressing insert. The convex block 10 has an arc-shaped structure; it has multiple support sections 11 corresponding to the force-bearing section 8, and multiple forming sections 12 corresponding to the reinforcing section 9. The convex block 10 and the arc-shaped groove 5 are arranged in a mirror image. The support sections 11 and the force-bearing section 8 are arranged in a three-section configuration; the forming sections 12 and the reinforcing section 9 are arranged in a two-section configuration. This ensures that the force is evenly distributed during stamping, preventing deformation and ensuring that the stamping strength and temperature at the stamping points meet the stamping requirements, thereby improving the stamping effect.

[0046] Specifically, the upper mold 3 and the lower mold 4 are also provided with upper and lower cooling water channels, which are used to control the stamping temperature by injecting water during stamping. The upper cooling water channel is connected to the arc-shaped groove, and the lower cooling water channel is connected to the convex block.

[0047] The specific implementation process is as follows:

[0048] First, select the appropriate mold according to the door pillar model and install the mold on the stamping equipment; then import the door pillar processing drawings into the stamping equipment. Next, set the processing mode of the stamping equipment by selecting the door pillar model and basic stamping parameters to perform coarse settings; these parameters include basic stamping strength, basic stamping duration, and basic stamping temperature; this quickly adjusts the stamping equipment parameters to the required operating range. Then, based on the strength requirements of different parts of the door pillar, select and set the stamping force points to form stamping points, and set the corresponding point stamping strength parameters according to these points. These point stamping strength parameters include the stamping duration and stamping temperature for each stamping point. After setting the point stamping strength parameters, place the sheet metal and start the stamping equipment. The stamping equipment will stamp the sheet metal according to the set stamping parameters to obtain the formed car door pillar. After one stamping cycle, remove the formed door pillar.

[0049] In this embodiment, by combining the strength requirements of different parts of the door pillar, corresponding stamping points are selected, and the stamping parameters of each stamping point are set; thus, the strength requirements of different parts of the door pillar can be met during the stamping process, thereby eliminating the need for additional patching. While improving the strength of the door pillar, the overall weight of the door pillar is reduced, thereby improving the overall lightweight performance of the vehicle, simplifying the processing flow, increasing production efficiency, and improving product quality.

[0050] This application analyzes the strength requirements of different parts of the goalpost and innovatively adopts a direct stamping method to strengthen different parts of the goalpost, instead of using patching methods, thus effectively reducing the overall weight of the goalpost. Simultaneously, this application also effectively reduces the overall hydrogen content of the goalpost by controlling the hydrogen content in the gas injected during the stamping process; thereby improving the goalpost's strength and reducing its brittleness. This overcomes the existing misconception that goalpost strength can only be improved through patching, rather than by the conventional approach of continuously adding patches and reducing their weight.

[0051] Example 2

[0052] Unlike Example 1, this example analyzes the strength requirements of each part of the door pillar, using the strength requirements specified in automobile production. Specifically, the strength level is divided into 5 grades, with higher values ​​indicating higher strength. The door pillar is then divided into upper, middle, and lower sections. CAE simulations of collisions are used to test each section at different angles and speeds, obtaining the strength level for each section. Based on the collision results and the strength level analysis of each part, the section with the highest strength requirement (the part most prone to deformation, breakage, or the most collision contact points in the test) and the lowest strength level value is selected as the stamping point. In this example, each section undergoes a frontal collision at a speed of 64 km / h to obtain its strength level during the frontal collision; the upper section has a strength level of 3; the middle section has a strength level of 2; and the lower section has a strength level of 4. Then, each section undergoes a side collision at a speed of 50 km / h to obtain its strength level during the side collision; the upper section has a strength level of 4; the middle section has a strength level of 2; and the lower section has a strength level of 4. Each segment was subjected to a rear-end collision at a collision speed of 60 km / h to obtain the strength level of each segment upon rear-end collision; the strength level of the upper segment was 4; the strength level of the middle segment was 3; and the strength level of the lower segment was 2. A comprehensive analysis of the strength levels of each segment was conducted, taking into account the degree of deformation, the magnitude of the force, the probability of collision, and the contact area at each location, and then the corresponding reinforcement parts were selected and set as the stamping points.

[0053] In this embodiment, each part of the door pillar is tested in sections. Then, stamping points are selected based on the strength level analysis of each section. The stamping points are precisely chosen according to the strength requirements of each section, ensuring their accuracy and effectiveness. This allows for strength enhancement of the corresponding parts of the door pillar during the stamping process, meeting the strength requirements of each part of the door pillar. This eliminates the need for additional patching. While increasing the strength of the door pillar, the overall weight of the door pillar is reduced, thereby improving the overall lightweight performance of the vehicle, simplifying the manufacturing process, increasing production efficiency, and improving product quality.

[0054] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A method for processing high-strength automotive door pillars, characterized in that, A high-strength automotive door pillar processing mold is used, comprising an upper mold and a lower mold that cooperate with each other. The upper mold includes an upper mold body, within which an arc-shaped groove is provided. The arc-shaped groove includes an upper arc surface and a lower arc surface. The upper arc surface has multiple stress-bearing sections, and the lower arc surface has multiple reinforcing sections. The lower mold includes a lower mold body, within which a convex block is provided, corresponding to the arc-shaped groove. The convex block has an arc-shaped structure and multiple support sections corresponding to the stress-bearing sections, as well as multiple forming sections corresponding to the reinforcing sections. The processing method includes the following steps: S1. Select the appropriate high-strength automotive door pillar processing mold and install the mold on the stamping equipment accordingly; S2, Select the stamping processing mode according to the model of the door post to be stamped; S3. Based on the strength requirements of different parts of the gatepost, select the gatepost stamping stress points to form stamping points, and set the stamping strength parameters of the stamping points according to the stamping points. S4, set the stamping operation parameters according to the stamping intensity of different parts of the gatepost; S5, place the sheet metal and start the stamping equipment. Stamp the sheet metal according to the set stamping operation parameters to obtain the formed car door pillar.

2. The high-strength automotive door pillar processing method according to claim 1, characterized in that: The processing mode includes selecting the door post model and setting basic stamping parameters, which include basic stamping strength, basic stamping time, and basic stamping temperature.

3. The high-strength automotive door pillar processing method according to claim 2, characterized in that: In S3, the number of stamping points is set to 2-6, and the stamping points are respectively set on the upper and lower sides of the door post, including upper stamping points and lower stamping points.

4. The high-strength automotive door pillar processing method according to claim 3, characterized in that: The range of the stamping strength parameters at the specified points is 150T-400T.

5. A method for processing high-strength automotive door pillars according to claim 1, characterized in that, In S4, the stamping operation parameters include stamping duration and stamping temperature.

6. A method for processing a high-strength automotive door pillar according to claim 5, characterized in that: The stamping time is set according to the location of the stamping point and the current temperature of the stamping point; the stamping temperature is set according to the strength requirements of different locations.

7. A method for processing a high-strength automotive door pillar according to claim 6, characterized in that: The stamping time is set to 3s-16s; the stamping temperature is set to 920℃-950℃.

8. A method for processing a high-strength automotive door pillar according to claim 7, characterized in that: The stress-bearing segments are set to 2-4; the reinforcement segments are set to 3.

9. A method for processing a high-strength automotive door pillar according to claim 8, characterized in that: The stress-bearing section has a length of 80-150mm and a thickness of 0.9-4mm; the reinforcing section has a length of 300-600mm and a thickness of 0.9-4mm.

Images