Automotive mold sheet metal stamping dies

Abstract

This invention discloses a stamping die for automotive sheet metal parts, specifically relating to the field of sheet metal assembly processing technology. It includes a V-shaped bottom die, a controller, corner combination rollers, and a corner inclined surface linkage assembly. The corner inclined surface linkage assembly includes a V-shaped processing groove, a punch strip, an arc die strip, and an inclined surface combination roller. This invention, through the corner inclined surface linkage assembly and the pointed groove opening assembly, can simultaneously perform three combined processing operations on the bottom of the corner of automotive sheet metal parts: pointed groove opening, opening, and right-side inclined surface arc protrusion. During dynamic corner inclined surface linkage assembly processing, the corner and inclined surface are synchronously matched and adjusted, significantly improving production progress and efficiency. It greatly enhances the adaptability of processing to complex requirements, thus solving the problem of difficulty in fully meeting diverse production tasks, and the fact that adjustment difficulties slow down production progress and increase unnecessary production costs.

Description

Technical Field

[0001] This invention relates to the field of sheet metal assembly processing technology, and more specifically, to stamping dies for automotive sheet metal parts. Background Technology

[0002] In the intelligent manufacturing equipment industry, automotive mold sheet metal parts combination stamping die plays a vital role. It is a key process for achieving efficient and precise production in the automotive manufacturing process. Specifically, it is used to achieve high-precision forming of complex shapes and to combine automotive sheet metal parts to complete the production of these features in one go, ensuring dimensional accuracy and shape consistency.

[0003] Among the existing publicly available technical documents, patent publication number CN111438531A discloses a dual-station continuous stamping die for sheet metal parts. This technology utilizes a hollow motor fixedly mounted at the left end of the sliding cavity, with its front and rear ends connected to a rotating component. This invention provides a dual-station continuous stamping die for sheet metal parts, achieving continuous processing of the sheet metal at two stations using a single die, thus improving the efficiency of sheet metal processing and reducing the cost of using two dies for step-by-step processing. However, this technology has the following drawbacks.

[0004] In the stamping and assembly of automotive mold sheet metal parts, various combination processing is required for the corners and inclined surfaces of sheet metal parts to meet the needs of different models. However, it is currently extremely difficult to adjust them simultaneously. This not only greatly limits the adaptability of processing to various complex needs and makes it difficult to fully meet diverse production tasks, but also affects product quality and consistency due to the difficulty in accurately adapting to different models. At the same time, the difficulty in adjustment will slow down the production progress, extend the production cycle, and increase unnecessary production costs. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art, the present invention provides the following technical solution: a stamping die for automotive sheet metal parts, comprising a V-shaped bottom die and a controller, wherein a corner combination roller is rotatably connected at the inner corner position of the V-shaped bottom die, and a corner inclined surface linkage combination processing assembly is provided on the outer wall of the corner combination roller; the corner inclined surface linkage combination processing assembly includes a V-shaped processing groove fixedly disposed on the outer wall of the corner combination roller, a punch strip is provided on one side of the V-shaped processing groove, and an arcuate die strip is provided on one side of the punch strip, both the arcuate die strip and the punch strip are fixedly connected to the corner combination roller, and an inclined surface combination roller is rotatably connected to an inclined surface of the inner wall of the V-shaped bottom die; an arcuate groove is fixedly opened on the outer wall of the inclined surface combination roller, a V-shaped concave strip is provided on one side of the arcuate groove, and an arcuate convex strip is provided on one side of the V-shaped concave strip.

[0006] Preferably, the V-shaped processing groove, punch strip, and arc-shaped punch strip are arranged in a circumferential distribution, and the outer wall of the punch strip is rounded. The arc-shaped groove, V-shaped concave strip, and arc-shaped convex strip are arranged in a circumferential distribution, and the outer wall of the arc-shaped convex strip is an arc surface. Preferably, the inner wall of the V-shaped processing groove is provided with a pointed groove opening assembly; the pointed groove opening assembly includes multiple pointed blocks disposed on the inner wall of the V-shaped processing groove, the pointed blocks are fixedly connected to the corner combination roller to which the V-shaped processing groove belongs, a support column is fixedly connected to one side of the pointed block, and a connecting block is fixedly connected to one end of the support column; a cutting head is fixedly connected to the upper surface of the connecting block. The vertical cross-sectional shape of the pointed block is polygonal, and the vertical cross-sectional shape of the support column is circular.

[0007] In use, the automotive sheet metal material is placed inside the positioning frame, keeping the corner combination roller and the inclined combination roller stationary. The corner of the automotive sheet metal material enters the V-shaped processing groove. Multiple pointed blocks create a grooving at the bottom of the corner of the automotive sheet metal material. The support column stably supports the connecting block, which in turn stably supports the cutting head. The cutting head makes a hole at the corner of the automotive sheet metal material, while the right-side inclined surface of the automotive sheet metal material is compressed inside the arc-shaped groove to form an arc-shaped protrusion. Alternatively, when the angle sensor detects an angle of 120 degrees, the corner combination roller drives the arc-shaped die strip to rotate to the corner area of ​​the V-shaped processing groove, while the inclined combination roller drives the arc-shaped protrusion to be positioned on the inclined surface of the V-shaped processing groove. Alternatively, when the angle sensor detects an angle of 240 degrees, the corner combination roller drives the punch strip to rotate counterclockwise to the corner area of ​​the V-shaped processing groove, while the inclined combination roller drives the V-shaped concave strip to rotate counterclockwise to the right inclined surface of the V-shaped processing groove.

[0008] Preferably, one end of the corner combination roller is fixedly connected to the center of the circle with an inclined linkage component; the inclined linkage component includes a corner gear shaft, a corner rack, a connecting column, an inclined rack, an inclined gear shaft, an inclined block, a linkage electric cylinder, and an angle sensor.

[0009] The corner gear shaft is fixed to one end of the corner combination roller. The corner rack is meshed and driven by the outer wall of the corner gear shaft. The bottom end of the connecting column is fixed at the top end of the corner rack. The inclined rack is fixed at the top end of the connecting column. The inclined gear shaft meshes and drives on the inclined surface above the inclined rack. The inclined gear shaft and the inclined combination roller are concentrically fixedly connected. The inclined block is fixed to the lower inclined surface of the inclined rack. The linkage electric cylinder is installed on the lower inclined surface of the inclined block. The outer wall of the linkage electric cylinder is fixedly connected to the V-shaped bottom mold. The angle sensor is installed on one end of the corner gear shaft and is used to sense the rotation angle of the corner gear shaft. Both the linkage electric cylinder and the angle sensor are electrically connected to the controller. The top end of the inclined rack is higher than the top end of the corner rack. Both the inclined rack and the corner rack are slidably connected to the V-shaped bottom mold. The inclined block and the inclined rack are vertically arranged, and the inclined block is slidably connected to the V-shaped bottom mold. The outer wall of the angle sensor is fixedly connected to a housing, and the housing is fixedly connected to the V-shaped bottom mold.

[0010] In use, the housing supports the angle sensor, and the linkage electric cylinder pushes the inclined block to tilt upwards. The inclined rack drives the inclined gear shaft to rotate counterclockwise, and the inclined gear shaft drives the inclined combination roller to rotate counterclockwise. The connecting column drives the corner rack to tilt upwards, and at the same time, the corner gear shaft synchronously drives the corner combination roller to rotate counterclockwise in the corner area of ​​the V-shaped bottom mold.

[0011] Preferably, a positioning frame is fixedly connected to the upper surface of the V-shaped bottom mold; a sleeve plate is fixedly connected to the upper surface of the positioning frame; a stamping electric cylinder is fixedly mounted on the upper surface of the sleeve plate; the output end of the stamping electric cylinder is fixedly connected to a processing upper mold; the controller is fixedly located on the outer wall of the sleeve plate; guide posts are provided on both sides of the stamping electric cylinder; both guide posts are slidably connected to the sleeve plate; and both guide posts are fixedly connected to the processing upper mold. The output end of the stamping electric cylinder is slidably connected to the sleeve plate, and the stamping electric cylinder is electrically connected to the controller.

[0012] When this technology is in use, the output end of the stamping electric cylinder moves down along the inner wall of the sleeve plate, and the output end of the stamping electric cylinder drives the upper processing die to move down. The two guide pillars move down synchronously and slide down along the inner wall of the sleeve plate. The upper processing die can process the automotive sheet metal parts into the V-shaped bottom die for forming.

[0013] The technical effects and advantages of this invention are as follows:

[0014] 1. This invention, through the corner and inclined surface linkage processing component and the pointed groove opening component, enables a wide variety of combined processing for the corners and inclined surfaces of automotive sheet metal parts. In the fixed pointed groove opening assembly stage of automotive sheet metal parts, thanks to the specific structural arrangement, three combined processing operations can be performed simultaneously on the bottom of the corner of the automotive sheet metal part material: pointed groove opening, opening, and right-side inclined surface arc protrusion. During dynamic corner and inclined surface linkage processing, at 120 degrees, the corner of the automotive sheet metal part contacts the arc mold strip to form an inner arc surface, and the right-side inclined surface of the automotive sheet metal part contacts the arc protrusion strip to form a protruding inner arc. At 240 degrees, the corner of the automotive sheet metal part forms a bottom arc surface, and the right-side inclined surface of the automotive sheet metal part is a V-shaped inner groove formed by a V-shaped concave strip. This fully meets the combined processing requirements of different models. At the same time, the corner and inclined surface are synchronously matched and adjusted, which greatly improves the production progress and greatly enhances the adaptability of processing to complex requirements.

[0015] 2. The present invention addresses the significant difficulties of previous synchronous adjustments, which struggled to accurately adapt to different models, severely impacting product quality and consistency. This technology utilizes an angle sensor to sense the angle of the corner gear shaft, precisely controlling the synchronous rotation angle of the corner combination roller and the inclined surface combination roller. This ensures that all parts of the automotive sheet metal parts can be precisely formed under different combination processing conditions. For example, under different angle settings of 120 degrees and 240 degrees, the corner area inside the V-shaped bottom mold can switch to different combination processing shapes, and the inclined surface area on the right side of the V-shaped bottom mold can synchronously switch to match the corresponding combination processing shape. The corner parts and inclined surfaces of the automotive sheet metal parts can accurately contact the corresponding molds, thereby forming the required shape. This effectively avoids product defects caused by adaptation problems and strongly guarantees product quality and consistency.

[0016] 3. This invention employs an inclined linkage component that uses a linkage electric cylinder to push the inclined block, causing the inclined rack and corner rack to tilt and move upward synchronously. The inclined gear shaft, inclined combination roller, corner gear shaft, and corner combination roller achieve synchronous linkage rotation, enabling rapid switching between different combined processing shapes. This eliminates the need for tedious adjustments to each area individually, significantly shortening production preparation time, accelerating production progress, and reducing unnecessary waiting and resource waste caused by adjustment difficulties. Consequently, it effectively reduces production costs and improves the economic efficiency of combined processing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the stamping die for automotive sheet metal parts according to the present invention.

[0018] Figure 2 This is a schematic diagram of the V-shaped bottom mold and the outer shell disassembled structure of the present invention.

[0019] Figure 3This is a partial structural diagram of the connection between the connecting post and the corner rack of the present invention.

[0020] Figure 4 This is a partial structural diagram of the connection between the corner combined roller and the corner gear shaft of the present invention.

[0021] Figure 5 This is a partial structural diagram of the connection between the V-shaped bottom mold and the linkage electric cylinder of the present invention.

[0022] Figure 6 This is a partial structural schematic diagram of the inclined combined roller of the present invention.

[0023] Figure 7 This is a schematic diagram of the main structure of the pointed slot opening assembly of the present invention.

[0024] Figure 8 This is a schematic diagram of the main structure of the tilting linkage component of the present invention.

[0025] Figure 9 This is a schematic diagram of a partial section of the structure at the connection between the V-shaped bottom mold and the positioning frame of the present invention.

[0026] The attached figures are labeled as follows: 1. V-shaped bottom mold; 2. Corner combination roller; 3. V-shaped machining groove; 4. Punch strip; 5. Arc mold strip; 6. Inclined combination roller; 7. Arc groove; 8. V-shaped concave strip; 9. Arc-shaped convex strip; 10. Pointed block; 11. Support column; 12. Connecting block; 13. Cutting head; 14. Corner gear shaft; 15. Corner rack; 16. Connecting column; 17. Inclined rack; 18. Inclined gear shaft; 19. Inclined block; 20. Linkage electric cylinder; 21. Angle sensor; 22. Housing; 23. Sleeve plate; 24. Stamping electric cylinder; 25. Controller; 26. Guide column; 27. Machining upper mold; 28. Positioning frame. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] As attached Figure 1 - Appendix Figure 9The illustration shows a stamping die for automotive sheet metal parts. This die is equipped with a corner inclined surface linkage assembly, a sharp groove opening assembly, and an inclined linkage assembly. The arrangement of these components allows for the simultaneous execution of three combined processing operations: sharp groove grooving, opening, and side arc protrusion during the fixed sharp groove opening assembly phase. During dynamic assembly, the corner of the automotive sheet metal part contacts the arc-shaped die strip 5 to form an inner arc surface. The inclined surface is formed by an arc-shaped protrusion 9 protruding into the inner arc shape, or the corner area forms a bottom arc surface, and the right-side inclined surface is a V-shaped inner groove formed by a V-shaped concave strip 8. This fully meets the combined processing requirements of different models and greatly improves the adaptability of processing to complex needs. The specific structural settings of each component are as follows.

[0029] In this embodiment, as shown in the appendix Figure 1 - Appendix Figure 6 As shown, a corner combination roller 2 is rotatably connected at the inner corner of the V-shaped bottom mold 1. The outer wall of the corner combination roller 2 is provided with a corner inclined surface linkage processing assembly. The corner inclined surface linkage processing assembly includes a V-shaped processing groove 3 fixedly installed on the outer wall of the corner combination roller 2. A punch strip 4 is provided on one side of the V-shaped processing groove 3, and an arcuate die strip 5 is provided on one side of the punch strip 4. Both the arcuate die strip 5 and the punch strip 4 are fixedly connected to the corner combination roller 2. An inclined surface combination roller 6 is rotatably connected to an inclined surface of the inner wall of the V-shaped bottom mold 1. An arcuate groove 7 is fixedly opened on the outer wall of the inclined surface combination roller 6. A V-shaped concave strip 8 is provided on one side of the arcuate groove 7, and an arcuate protrusion 9 is provided on one side of the V-shaped concave strip 8. The V-shaped processing groove 3, the punch strip 4, and the arcuate die strip 5 are arranged in a circumferential distribution. The outer wall of the punch strip 4 is rounded. The arcuate groove 7, the V-shaped concave strip 8, and the arcuate protrusion 9 are arranged in a circumferential distribution. The outer wall of the arcuate protrusion 9 is an arcuate surface.

[0030] In this embodiment, as shown in the appendix Figure 4 - Appendix Figure 7 As shown, the inner wall of the V-shaped processing groove 3 is provided with a pointed groove opening assembly. The pointed groove opening assembly includes multiple pointed blocks 10 disposed on the inner wall of the V-shaped processing groove 3. The pointed blocks 10 are fixedly connected to the corner combination roller 2 to which the V-shaped processing groove 3 belongs. A support column 11 is fixedly connected to one side of the pointed block 10, and a connecting block 12 is fixedly connected to one end of the support column 11. A cutter head 13 is fixedly connected to the upper surface of the connecting block 12. The vertical cross-section of the pointed block 10 is polygonal, and the vertical cross-section of the support column 11 is circular, so that the corner combination roller 2 can support the pointed block 10, the pointed block 10 supports the support column 11, the support column 11 supports the connecting block 12, and the connecting block 12 supports the cutter head 13. The multiple pointed blocks 10 perform pointed grooves on the bottom of the corner of the automotive sheet metal material. At the same time, the support column 11 can stably support the connecting block 12, the connecting block 12 stably supports the cutter head 13, and the cutter head 13 opens holes in the corner of the automotive sheet metal material.

[0031] In this embodiment, as shown in the appendix Figure 3- Appendix Figure 8 As shown, one end of the corner combination roller 2 is fixedly connected to the center of the circle with an inclined linkage component; the inclined linkage component includes a corner gear shaft 14, a corner rack 15, a connecting column 16, an inclined rack 17, an inclined gear shaft 18, an inclined block 19, a linkage electric cylinder 20, and an angle sensor 21. Angle gear shaft 14 is fixed to one end of angle combination roller 2. Angle rack 15 is meshed and connected to the outer wall of angle gear shaft 14. The bottom end of connecting column 16 is fixed to the top end of angle rack 15. Inclined rack 17 is fixed to the top end of connecting column 16. Inclined gear shaft 18 is meshed and connected to the inclined surface above inclined rack 17. Inclined gear shaft 18 is fixedly connected to inclined combination roller 6 with the same center. Inclined block 19 is fixed to the lower inclined surface of inclined rack 17. Linkage electric cylinder 20 is installed on the lower inclined surface of inclined block 19. The outer wall of linkage electric cylinder 20 is fixedly connected to V-shaped bottom mold 1. Angle sensor 21 is installed on one end of angle gear shaft 14.

[0032] Angle sensor 21 is used to sense the rotation angle of corner gear shaft 14; both linkage cylinder 20 and angle sensor 21 are electrically connected to controller 25. The top of inclined rack 17 is higher than the top of corner rack 15, and both inclined rack 17 and corner rack 15 are slidably connected to V-shaped bottom mold 1. Inclined block 19 is vertically arranged between inclined rack 17 and slidably connected to V-shaped bottom mold 1; a housing 22 is fixedly connected to the outer wall of angle sensor 21, and the housing 22 is fixedly connected to V-shaped bottom mold 1.

[0033] In this embodiment, as shown in the appendix Figure 9 As shown, a positioning frame 28 is fixedly connected to the upper surface of the V-shaped bottom mold 1; a sleeve plate 23 is fixedly connected to the upper surface of the positioning frame 28; a stamping electric cylinder 24 is fixedly installed on the upper surface of the sleeve plate 23; the output end of the stamping electric cylinder 24 is fixedly connected to a processing upper mold 27; a controller 25 is fixedly located on the outer wall of the sleeve plate 23; guide posts 26 are provided on both sides of the stamping electric cylinder 24; both guide posts 26 are slidably connected to the sleeve plate 23; and both guide posts 26 are fixedly connected to the processing upper mold 27. The output end of the stamping electric cylinder 24 is slidably connected to the sleeve plate 23, and the stamping electric cylinder 24 is electrically connected to the controller 25.

[0034] The working principle of the automotive sheet metal stamping die of this invention is as follows:

[0035] Example 1:

[0036] When performing the fixed pointed groove opening combination, the automotive sheet metal part material is placed inside the positioning frame 28, keeping the corner combination roller 2 fixed and the inclined combination roller 6 fixed. In this way, an arc groove 7 will exist at the inclined surface position of the V-shaped processing groove 3 to form an arc groove, and the V-shaped processing groove 3 on the corner combination roller 2 will form a corner V-shaped groove body.

[0037] The controller 25 starts the stamping cylinder 24. The output end of the stamping cylinder 24 moves down along the inner wall of the sleeve plate 23. The output end of the stamping cylinder 24 drives the upper processing die 27 to move down. The upper processing die 27 drives the two guide pillars 26 to move down synchronously. The guide pillars 26 slide down along the inner wall of the sleeve plate 23. In this way, the upper processing die 27 can process the automotive sheet metal material into the V-shaped bottom die 1 for forming. The corner of the automotive sheet metal material enters the V-shaped processing groove 3. At the same time, multiple sharp blocks 10 perform sharp-point grooving on the bottom of the corner of the automotive sheet metal material. Meanwhile, the support column 11 can stably support the connecting block 12. The connecting block 12 stably supports the cutter head 13. The cutter head 13 makes a hole in the corner of the automotive sheet metal material. The right inclined surface of the automotive sheet metal material is squeezed inside the arc groove 7 to form an arc-shaped protrusion. The combination of sharp-point grooving, hole making and side arc-shaped protrusion processing is performed.

[0038] Example 2:

[0039] Firstly, when the present invention performs tilting linkage, the V-shaped bottom mold 1 supports the outer shell 22, and the outer shell 22 supports the angle sensor 21. The controller 25 activates the linkage electric cylinder 20, which pushes the inclined block 19 to tilt upward. The inclined block 19 drives the inclined rack 17 to tilt upward, and the inclined rack 17 drives the inclined gear shaft 18 to rotate counterclockwise. The inclined gear shaft 18 drives the inclined combination roller 6 to rotate counterclockwise. At the same time, the inclined rack 17 drives the connecting column 16 to tilt upward, and the connecting column 16 drives the corner rack 15 to tilt upward. The corner rack 15 drives the corner gear shaft 14 to rotate counterclockwise. Simultaneously, the corner gear shaft 14 will synchronously drive the corner combination roller 2 to rotate counterclockwise in the corner area of ​​the V-shaped bottom mold 1. The angle sensor 21 realizes angle sensing of the corner gear shaft 14. When the angle value sensed by the angle sensor 21 is 120 degrees, or when the angle value sensed by the angle sensor 21 is 240 degrees.

[0040] Secondly, when performing dynamic corner and inclined surface linkage combined processing, when the angle sensor 21 senses an angle of 120 degrees, the corner combination roller 2 drives the arc mold strip 5 to rotate to the corner area of ​​the V-shaped processing groove 3, while the inclined surface combination roller 6 drives the arc protrusion 9 to be located on the inclined surface of the V-shaped processing groove 3. The controller 25 starts the stamping cylinder 24, which drives the upper processing die 27 to move down. The upper processing die 27 extrudes and bends the automotive sheet metal material from inside the positioning frame 28 into the V-shaped processing groove 3 inside the V-shaped bottom die 1. At the same time, the corner part of the automotive sheet metal material contacts the arc mold strip 5 as an inner arc surface, and the inclined surface of the automotive sheet metal material is the arc protrusion 9 protruding from the inner arc shape.

[0041] Alternatively, when the angle sensor 21 senses an angle of 240 degrees, the corner combination roller 2 drives the punch strip 4 to rotate counterclockwise to the corner area of ​​the V-shaped processing groove 3, while the inclined combination roller 6 drives the V-shaped concave strip 8 to rotate counterclockwise to the right inclined surface of the V-shaped processing groove 3. The corner combination roller 2 and the inclined combination roller 6 can be synchronously linked in the corner area and in the inclined surface area of ​​the V-shaped processing groove 3. After the combination, the controller 25 starts the stamping cylinder 24, which pushes the upper processing die 27 down. The corner part of the automotive sheet metal material is pressed and contacts the arc surface of the arc die strip 5, forming a bottom arc surface in the corner area of ​​the automotive sheet metal material. At the same time, the right inclined surface of the automotive sheet metal material is pressed and contacts the inner wall of the V-shaped concave strip 8, forming a V-shaped inner groove state on the right inclined surface of the automotive sheet metal material. In this way, the corner area inside the V-shaped bottom die 1 can switch to different combination processing shapes, and the right inclined surface area of ​​the V-shaped bottom die 1 can be synchronously switched and matched to the corresponding combination processing shape.

[0042] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A stamping die for automotive sheet metal parts, comprising a V-shaped bottom die and a controller, wherein a corner combination roller is rotatably connected at the internal corner position of the V-shaped bottom die, characterized in that: The outer wall of the corner combination roller is equipped with a corner inclined surface linkage combination processing component; The corner inclined surface linkage combined processing assembly includes a V-shaped processing groove fixedly installed on the outer wall of the corner combined roller. A punch strip is provided on one side of the V-shaped processing groove, and an arc-shaped punch strip is provided on one side of the punch strip. Both the arc-shaped punch strip and the punch strip are fixedly connected to the corner combined roller. An inclined surface combined roller is rotatably connected to an inclined surface on the inner wall of the V-shaped bottom mold. An arc-shaped groove is fixedly opened on the outer wall of the inclined surface combined roller. A V-shaped concave strip is provided on one side of the arc-shaped groove, and an arc-shaped convex strip is provided on one side of the V-shaped concave strip. An inclined linkage assembly is fixedly connected to one end of the corner combined roller with the center. The inclined linkage assembly includes a corner gear shaft, a corner rack, a connecting column, an inclined rack, an inclined gear shaft, an inclined block, a linkage electric cylinder, and an angle sensor. The corner gear shaft is fixed to one end of the corner combination roller. The corner rack is meshed and connected to the outer wall of the corner gear shaft. The bottom end of the connecting column is fixed at the top end of the corner rack. The inclined rack is fixed at the top end of the connecting column. The inclined gear shaft meshes and drives on the inclined surface above the inclined rack. The inclined gear shaft and the inclined combination roller are fixedly connected in the same circle. The inclined block is fixed to the lower inclined surface of the inclined rack. The linkage electric cylinder is installed on the lower inclined surface of the inclined block. The outer wall of the linkage electric cylinder is fixedly connected to the V-shaped bottom mold. The angle sensor is installed on one end of the corner gear shaft. The angle sensor is used to sense the rotation angle of the corner gear shaft. Both the linkage electric cylinder and the angle sensor are electrically connected to the controller.

2. The stamping die for automotive sheet metal parts according to claim 1, characterized in that: The V-shaped machining groove, punch strip, and arc die strip are arranged in a circumferential distribution, and the outer wall of the punch strip is rounded.

3. The stamping die for automotive sheet metal parts according to claim 1, characterized in that: The arc-shaped grooves, V-shaped concave strips, and arc-shaped convex strips are arranged in a circumferential distribution, and the outer wall of the arc-shaped convex strips is an arc surface.

4. The stamping die for automotive sheet metal parts according to claim 1, characterized in that: The inner wall of the V-shaped machining groove is provided with a pointed groove opening assembly; The pointed groove opening assembly includes multiple pointed blocks disposed on the inner wall of the V-shaped processing groove. The pointed blocks are fixedly connected to the corner combination roller to which the V-shaped processing groove belongs. A support column is fixedly connected to one side of the pointed block, and a connecting block is fixedly connected to one end of the support column. A cutting head is fixedly connected to the upper surface of the connecting block.

5. The stamping die for automotive sheet metal parts according to claim 4, characterized in that: The vertical cross-section of the pointed block is polygonal, and the vertical cross-section of the support column is circular.

6. The stamping die for automotive sheet metal parts according to claim 1, characterized in that: The top of the inclined rack is higher than the top of the corner rack, and both the inclined rack and the corner rack are slidably connected to the V-shaped bottom mold.

7. The stamping die for automotive sheet metal parts according to claim 1, characterized in that: The inclined block and the inclined rack are vertically arranged, and the inclined block is slidably connected to the V-shaped bottom mold; The outer wall of the angle sensor is fixedly connected to a housing, and the housing is fixedly connected to the V-shaped bottom mold.

8. The stamping die for automotive sheet metal parts according to claim 1, characterized in that: A positioning frame is fixedly connected to the upper surface of the V-shaped bottom mold; A sleeve plate is fixedly connected to the upper surface of the positioning frame, and a stamping electric cylinder is fixedly installed on the upper surface of the sleeve plate. A processing upper die is fixedly connected to the output end of the stamping electric cylinder. The controller is fixedly located on the outer wall of the sleeve plate. Guide columns are provided on both sides of the stamping electric cylinder. Both guide columns are slidably connected to the sleeve plate and fixedly connected to the processing upper die.

9. The stamping die for automotive sheet metal parts according to claim 8, characterized in that: The output end of the stamping electric cylinder is slidably connected to the sleeve plate, and the stamping electric cylinder is electrically connected to the controller.

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