High-precision hot forging piece punching die structure

Abstract

The utility model discloses a high-precision hot forging piece punching die structure which comprises an upper die plate, the lower end of the upper die plate is connected with an upper padding plate, the lower end of the upper padding plate is connected with a punch fixing plate, the lower end of the punch fixing plate is used for positioning and fixing a spring, a guide pin and a punch, and the lower end of the spring is connected with a pressing plate through a screw. The guide pin and the punch penetrate through the pressing plate, a lower die is arranged below the pressing plate, a hot forging piece is arranged on the upper surface of the lower die, a punching sleeve is embedded in the lower die, a lower die base plate is arranged at the lower end of the lower die, and a bottom plate is arranged below the lower die base plate. The hole diameter precision and the hole position precision are high, and the quality is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of hot forging processing technology, specifically relating to a high-precision hot forging punching die structure. Background Art

[0002] According to customer requirements, many forgings need to be punched during the production process. After punching, some need to be further machined, while others do not. For the pliers, which are small forgings, the assembly holes need to be punched during the forging process and no further machining is required. Therefore, the requirements for the punching diameter and hole position are very high. In addition, the hole is close to the shape of the forging, that is, the hole wall is thin. During punching, the forging is easily deformed locally, which affects the appearance of the forging and the flatness of the assembly. The existing technical solution is to perform cold straightening on a punch press after hot punching, cooling and shot blasting. Utility Model Content

[0003] The purpose of this invention is to provide a high-precision hot forging punching die structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-precision hot forging punching die structure, comprising an upper die plate connected to the lower end of an upper die plate, a punch fixing plate connected to the lower end of the upper die plate, a spring, a guide pin, and a punch being positioned and fixedly connected to the lower end of the punch fixing plate, the upper die plate, the upper die plate, and the punch fixing plate being positioned by a positioning pin, a pressure plate being connected to the lower end of the spring, the guide pin and the punch passing through the pressure plate, a lower die being provided below the pressure plate, a hot forging being provided on the upper surface of the lower die, a punch sleeve matching the punch being provided inside the lower die, the lower die and the punch sleeve being connected by an insert, a lower die pad being provided at the lower end of the lower die, a bottom plate being provided below the lower die pad, the lower die, the lower die pad, and the bottom plate being positioned by a positioning pin, and the upper die plate and the bottom plate being positioned by a guide sleeve and a guide post.

[0005] Preferably, the lower end of the upper template is provided with two guide sleeves, and the guide sleeves are provided with guide posts, the lower part of which is connected to the upper surface of the base plate.

[0006] Preferably, the lower mold is provided with a guide pin hole, and the guide pin hole corresponds to the guide pin.

[0007] Preferably, the upper template, upper pad, and punch fixing plate are provided with a positioning pin hole, and the positioning pin hole corresponds to the positioning pin.

[0008] Preferably, the lower mold, the lower mold pad, and the bottom plate are provided with a second positioning pin hole, and the second positioning pin hole corresponds to the second positioning pin.

[0009] The technical effects and advantages of this utility model are:

[0010] 1. During the punching process of forging production, the hot forging is held in place by the spring and pressure plate before punching, which positions and fixes the hot forging, resulting in high hole diameter and hole position accuracy, small deformation in the punching area of ​​the forging, guaranteed quality, and easier demolding.

[0011] 2. Mold components are positioned using locating pins, guide pins, guide pillars, guide sleeves, etc., resulting in high mold assembly accuracy and good stability;

[0012] 3. The punch and punch sleeve have high dimensional machining accuracy and small fitting clearance, ensuring high hole diameter accuracy and hole position accuracy;

[0013] 4. The cold correction process has been reduced, which has lowered production costs and improved production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention.

[0015] In the diagram: 100 Upper die plate, 110 Upper backing plate, 120 Punch fixing plate, 121 Positioning pin one, 130 Spring, 140 Guide pin, 200 Guide sleeve, 210 Guide post, 300 Pressure plate, 400 Lower die, 410 Guide pin hole, 420 Lower die backing plate, 430 Base plate, 431 Positioning pin two, 500 Hot forging. Detailed Implementation

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] The utility model provides Figure 1The high-precision hot forging punching die structure shown includes an upper template 100 with an upper pad 110 connected to its lower end, and a punch fixing plate 120 connected to its lower end. The lower end of the punch fixing plate 120 positions and fixes a spring 130, a guide pin 140, and a punch. The upper template 100, upper pad 110, and punch fixing plate 120 are positioned by a positioning pin 121. The lower end of the spring (130) is connected to a pressure plate 300. The guide pin 140 and the punch pass through the pressure plate 300. A lower die 400 is provided below, and a hot forging 500 is provided on the upper surface of the lower die 400. A punch sleeve matching the punch is provided inside the lower die 400. The lower die 400 and the punch sleeve are connected by an insert. A lower die pad 420 is provided at the lower end of the lower die 400. A base plate 430 is provided below the lower die pad 420. The lower die 400, the lower die pad 420, and the base plate 430 are positioned by a positioning pin 431. The upper die plate 100 and the base plate (430) are positioned by a guide sleeve 200 and a guide post 210.

[0018] Specifically, the lower end of the upper template 100 is provided with two guide sleeves 200, and the guide sleeves 200 are provided with guide posts 210. The lower part of the guide posts 210 is connected to the upper surface of the base plate 430.

[0019] Specifically, the lower mold 400 is provided with a guide pin hole 410, which corresponds to the guide pin 140.

[0020] Specifically, the upper template 100, the upper pad 110, and the punch fixing plate 120 are provided with a positioning pin hole, which corresponds to the positioning pin 121.

[0021] Specifically, the lower mold 400, the lower mold pad 420, and the base plate 430 are provided with positioning pin holes 2, which correspond to positioning pin 2 431.

[0022] Working principle:

[0023] During the punching process, before the punch punches, the upper template 100 moves down, causing the punch fixing plate 120 to move down. The pressure plate 300 presses down on the hot forging 500 in advance, and the guide pin 140 enters the guide pin hole. During the downward movement, the spring 130 is compressed, and the pressure on the pressure plate 300 gradually increases, thereby ensuring that the hot forging 500 will not move during the punching process and constraining the deformation around the punch. After the punching is completed, the pressure plate 300 moves up, the compression force of the spring 130 is released, and the pressure plate 300 pushes the hot forging 500 out of the punch, realizing demolding.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision hot forging punching die structure, comprising an upper die plate (100), characterized in that: The lower end of the upper mold plate (100) is connected to the upper pad (110), the lower end of the upper pad (110) is connected to the punch fixing plate (120), the lower end of the punch fixing plate (120) is positioned and fixedly connected to the spring (130), the guide pin (140), and the punch, the upper mold plate (100) and the upper pad (110) and the punch fixing plate (120) are positioned using a positioning pin 1 (121), the lower end of the spring (130) is connected to the pressing plate (300), the guide pin (140) and the punch pass through the pressing plate (300), and a lower mold (400) is provided below the pressing plate (300). ), a hot forging part (500) is provided on the upper surface of the lower die (400), a punch sleeve matching the punch is provided in the lower die (400), the lower die (400) and the punch sleeve are connected by inserts, a lower die pad (420) is provided at the lower end of the lower die (400), a bottom plate (430) is provided below the lower die pad (420), the lower die (400) and the lower die pad (420) and the bottom plate (430) are positioned by positioning pin 2 (431), and the upper die plate (100) and the bottom plate (430) are positioned by a guide sleeve (200) and a guide column (210).

2. A high-precision hot forging punching die structure according to claim 1, characterized in that: Two guide sleeves (200) are further provided at the lower end of the upper mold plate (100), guide pillars (210) are provided inside the guide sleeves (200), and the lower parts of the guide pillars (210) are connected to the upper surface of the bottom plate (430).

3. A high-precision hot forging punching die structure according to claim 1, characterized in that: The lower mold (400) is provided with a guide pin hole (410), and the guide pin hole (410) corresponds to the guide pin (140).

4. A high-precision hot forging punching die structure according to claim 1, characterized in that: The upper template (100), the upper pad (110), and the punch fixing plate (120) are provided with a first positioning pin hole, and the first positioning pin hole corresponds to the first positioning pin (121).

5. The high-precision hot forging punching die structure according to claim 1, characterized in that: The lower die (400), the lower die pad (420) and the bottom plate (430) are provided with a second positioning pin hole, and the second positioning pin hole corresponds to the second positioning pin (431).

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