Forming die for metal plate anti-dent performance sample

Abstract

The utility model relates to a forming die for a metal plate anti-dent performance sample, and belongs to the technical field of metal material detection sample machining in the metallurgical industry. According to the technical scheme, a male die (5) is installed on a male die base (1), a female die (8) is installed on a female die base (3), the male die base (1) and the female die base (3) are arranged up and down, and the male die base (1) and the female die base (3) are connected through a guide column (2); the blank holder (7) is installed on the male die base (1) through a plurality of blank holder pull rods (4), and each blank holder pull rod (4) is sleeved with a blank holder spring (6). The diameter of the blank holder (7) is larger than that of the male die (5), and the blank holder pull rods (4) are evenly arranged in the circumferential direction of the blank holder (7). The device has the beneficial effects that the device can simulate the processing of a covering part sample, can be used on a single-action hydraulic press or a mechanical press, meets the requirement of pre-deformation in a sample surface, and is accurate and efficient in sample processing.

Description

Technical Field

[0001] This utility model relates to a forming mold for dent resistance test specimens of metal plates, belonging to the field of metal material testing specimen processing technology in the metallurgical industry. Background Technology

[0002] With China's sustained and rapid economic growth, rising consumer spending, and supportive industrial policies, China has become the world's largest automobile producer and consumer. Steel, with its good formability, excellent recyclability, and low cost, has become the primary material for automobile body parts, with most exterior body panels being thin sheets of 0.6-0.8mm. The demand for high strength has led to thinner exterior panels in automobiles, requiring manufacturers to ensure that these thin metal sheets possess sufficient dent resistance to prevent dents from external impacts.

[0003] Currently, the main types of specimens used to test the dent resistance of sheet metal include flat specimens, bulging specimens, and simulated cover specimens. Among these, simulated cover specimens best reflect the dent resistance of the material after it has been fabricated into a cover. To better test the dent resistance of sheet metal under quasi-static conditions, it is necessary to accurately and efficiently prepare simulated cover specimens to further study the dent resistance of the sheet metal. Utility Model Content

[0004] The purpose of this invention is to provide a forming mold for metal sheet anti-dent performance test specimens, which can realize the processing of simulated cover specimens. It can be used on a single-action hydraulic press or a mechanical press, meets the requirements of pre-deformation within the sample surface, and processes the specimens accurately and efficiently, thus solving the problems existing in the background art.

[0005] The technical solution of this utility model is:

[0006] A forming die for a metal sheet anti-dent performance test sample includes a punch base, a guide post, a die base, a blank holder tie rod, a punch, a blank holder spring, a blank holder ring, and a die. The punch is mounted on the punch base, and the die is mounted on the die base. The punch base and the die base are arranged vertically and connected by the guide post. The blank holder ring is mounted on the punch base by several blank holder tie rods, and each blank holder tie rod is fitted with a blank holder spring.

[0007] The punch is a hollow cylinder.

[0008] The diameter of the pressure ring is larger than the diameter of the punch, and the pressure ring tie rods are evenly arranged along the circumference of the pressure ring.

[0009] The pressure spring on the pressure ring tie rod is located between the pressure ring and the punch base.

[0010] Both the punch base and the pressure ring are provided with positioning grooves that cooperate with the pressure spring.

[0011] The pressure ring is machined with drawing ribs, and the corresponding position of the die is machined with a groove.

[0012] The lower end of the guide post is fixed on the die base, and the upper end of the guide post is slidably connected to the punch base.

[0013] The beneficial effects of this utility model are: the structure of this utility model is easy to accept, and it can realize the processing of simulated cover sample. It can be used on a single-acting hydraulic press or a mechanical press, meets the requirement of pre-deformation in the sample surface >2% and is adjustable, and has the characteristics of accurate and efficient sample processing. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is a perspective view of the punch of this utility model;

[0017] Figure 4 This is a top view of the punch of this utility model;

[0018] Figure 5 for Figure 4 A sectional view;

[0019] Figure 6 This is a schematic diagram of the concave mold base of this utility model;

[0020] Figure 7 This is a schematic diagram of the punch base of this utility model;

[0021] In the diagram: 1. Punch base; 2. Guide post; 3. Die base; 4. Pressure ring tie rod; 5. Punch; 6. Pressure spring; 7. Pressure ring; 8. Die; 9. Groove; 10. Draw bead. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and examples.

[0023] See attached document Figure 1-7 A forming die for a metal sheet anti-dent performance test sample includes a punch base 1, a guide post 2, a die base 3, a blank holder pull rod 4, a punch 5, a blank holder spring 6, a blank holder ring 7, and a die 8. The punch 5 is mounted on the punch base 1, and the die 8 is mounted on the die base 3. The punch base 1 and the die base 3 are arranged vertically and are connected by the guide post 2. The blank holder ring 7 is mounted on the punch base 1 by several blank holder pull rods 4, and each blank holder pull rod 4 is fitted with a blank holder spring 6.

[0024] In this embodiment, refer to the appendix Figure 1-7 The forming die includes a punch base 1, a guide post 2, a die base 3, a blank holder pull rod 4, a punch 5, a blank holder spring 6, a blank holder ring 7, a die 8, a groove 9, and a drawbead 10, wherein:

[0025] Both the punch base 1 and the die base 3 are rectangular. The punch 5 is a hollow cylinder. The die 8 mates with the punch 5. The punch 5 is mounted on the punch base 1, and the die 8 is mounted on the die base 3. There are four guide pillars 2. The lower ends of the four guide pillars 2 are fixed on the die base 3, and the upper ends of the four guide pillars 2 are slidably connected to the punch base 1. The diameter of the pressure ring 7 is larger than the diameter of the punch 5. There are 12 pressure ring pull rods 4 evenly arranged along the circumference of the pressure ring 7. The pressure ring 7 is mounted on the punch base 1 through the 12 pressure ring pull rods 4. The pressure spring 6 is installed between the pressure ring 7 and the punch base 1 and is sleeved on the pressure ring pull rods 4.

[0026] As shown in the figure, the blank holder 7 is machined with a drawing rib 10, and the corresponding position of the die 8 is machined with a groove 9 to prevent flow during the stamping process of the blank holder position of the sample.

[0027] As shown in the figure, circular grooves are machined on the punch base 1 and the pressure ring 7 for positioning and fixing the pressure spring 6.

[0028] According to the required deformation amount of the anti-dent specimen, adjust the distance between the blank holder 7 and the punch base 1 to generate a certain amount of deformation in the blank holder spring 6. Install the mold on the press worktable, and after adjusting the mold, place the flat specimen on the upper surface of the die 8. The press slide moves the punch 5 of the mold downward, and the blank holder 7 contacts the specimen. After the blank holder spring 6 is compressed and deformed, it provides blank holder force. The pressure of the blank holder spring 6 causes the drawing bead of the blank holder 7 to close with the groove 9 on the die 8, locking the blank holder area of ​​the specimen. The punch 5 continues to move downward and contacts the specimen. Under the action of the press slide, the specimen is drawn to a predetermined depth. After reaching the predetermined depth, the press slide moves the punch 5 of the mold upward, and finally the shallow concave specimen after stamping is taken out.

Claims

1. A forming die for a dent resistance test specimen of a metal sheet, characterized in that: It includes a punch base (1), a guide post (2), a die base (3), a pressure ring tie rod (4), a punch (5), a pressure spring (6), a pressure ring (7), and a die (8). The punch (5) is mounted on the punch base (1), and the die (8) is mounted on the die base (3). The punch base (1) and the die base (3) are arranged vertically and connected to each other by the guide post (2). The pressure ring (7) is mounted on the punch base (1) by several pressure ring tie rods (4), and each pressure ring tie rod (4) is fitted with a pressure spring (6).

2. The forming die for a dent resistance test specimen of a metal sheet according to claim 1, characterized in that: The punch (5) is a hollow cylinder.

3. A forming die for a dent resistance test specimen of a metal sheet according to claim 2, characterized in that: The diameter of the pressure ring (7) is larger than the diameter of the punch (5), and the pressure ring pull rod (4) is evenly arranged along the circumference of the pressure ring (7).

4. A forming die for a dent resistance test specimen of a metal sheet according to claim 1, characterized in that: The pressure spring (6) on the pressure ring tie rod (4) is located between the pressure ring (7) and the punch base (1).

5. A forming die for a dent resistance test specimen of a metal sheet according to claim 4, characterized in that: Both the punch base (1) and the pressure ring (7) are provided with positioning grooves that cooperate with the pressure spring (6).

6. A forming die for a dent resistance test specimen of a metal sheet according to claim 1, characterized in that: The pressure ring (7) is machined with a drawing bead (10), and the die (8) is machined with a groove (9) at the corresponding position.

7. A forming die for a dent resistance test specimen of a metal sheet according to claim 1, characterized in that: The lower end of the guide post (2) is fixed on the die base (3), and the upper end of the guide post (2) is slidably connected to the punch base (1).

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