A special porous spiral tool for a press machine with heat stress buffering

Abstract

The application discloses a heat stress buffering special porous screw tool for a press machine, and belongs to the field of press machines, which comprises a base and an upper mounting plate, an installation hole is formed in the inner wall of the base, a guide column is mounted on the inner wall of the installation hole, a positioning seat is mounted on the top of the base, four buffering assemblies are mounted in the positioning seat, a tool body is mounted in the positioning seat, four butt joints are symmetrically mounted on the bottom of the upper mounting plate, a punch assembly is mounted on the bottom of the upper mounting plate, four butt joints are mounted on the inner wall of the upper mounting plate, a connecting plate is jointly mounted on the outer edges of the four butt joints, and disc springs are arranged on the outer edges of the four butt joints; through the setting of the disc springs and compression springs, a counterforce is generated, thereby the heat stress can be offset, the workpiece is prevented from being clamped too tightly or loosely, and the long-term stable operation of the tool in a high-temperature environment is ensured by using high-temperature alloy disc springs and chromium-vanadium steel compression springs.

Description

Technical Field

[0001] This application relates to the field of press technology, and in particular to a multi-hole spiral tooling for presses with thermal stress buffering. Background Technology

[0002] In the field of metal forging, presses are one of the commonly used processing equipment. During the forging process, the workpiece will expand due to high temperature and shrink after cooling. This thermal expansion and contraction phenomenon will cause changes in the size of the workpiece, which in turn will affect the processing accuracy and the stability of the tooling.

[0003] Currently, rigid tooling is commonly used in the industry to clamp workpieces, but this type of tooling is difficult to adapt to the dimensional changes of workpieces at high temperatures, which can easily lead to workpiece deformation or tooling damage. Existing technologies include two main approaches: first, using rigid fixtures in conjunction with a cooling system to reduce workpiece thermal deformation through forced cooling; however, this method is energy-intensive and results in uneven cooling. Second, using elastic elements (such as springs) as cushioning; however, ordinary springs are prone to failure at high temperatures and cannot effectively prevent tooling misalignment. Additionally, some solutions have attempted to use hydraulic or pneumatic cushioning systems, but these systems are complex in structure, costly, and difficult to maintain. Existing technologies using rigid fixtures cannot accommodate the thermal deformation of workpieces, which can easily lead to workpieces being clamped too tightly or too loosely; ordinary springs have unstable performance and short lifespan in high-temperature environments; hydraulic or pneumatic buffer systems are costly and complex to maintain; and existing tooling lacks an effective anti-skew mechanism, which affects machining accuracy. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a multi-hole spiral tooling for presses with thermal stress buffering, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution: a multi-hole spiral tooling for a thermal stress buffer press, comprising a base and an upper mounting plate. The inner wall of the base has mounting holes, and guide posts are installed on the inner wall of the mounting holes. A positioning seat is installed on the top of the base, and four buffer components are installed inside the positioning seat. The tooling body is installed inside the positioning seat. Four connecting pipes are symmetrically installed on the bottom of the upper mounting plate, and a punch assembly is installed on the bottom of the upper mounting plate. Four docking posts are installed on the inner wall of the upper mounting plate, and a connecting plate is installed on the outer edge of the four docking posts. Disc springs are sleeved on the outer edge of each of the four docking posts, and the bottom of each of the four disc springs abuts against the top of the connecting plate.

[0006] In a preferred embodiment, the buffer assembly includes a circular groove, which is formed on the top of the positioning seat. One end of a compression spring is fixedly connected to the inner wall of the circular groove, and the other end of the compression spring is fixedly connected to a pressure plate, which is adapted to slide on the inner wall of the circular groove.

[0007] By adopting the above technical solution, the elastic force of the compression spring can be used to provide a reaction force to buffer thermal stress, and the bottom of the docking post can be inserted into the inner wall of the circular groove to push the pressure plate to slide up and down on the inner wall of the circular groove, which can further apply a squeezing force to the compression spring.

[0008] In a preferred embodiment, there are four mounting holes and four guide posts, and the four mounting holes and four guide posts are symmetrically arranged on the top of the base, with the positions of the four connecting pipes corresponding to the positions of the four guide posts.

[0009] By adopting the above technical solution, the upper mounting plate can be limited, ensuring that the guide column will not easily tilt after being inserted into the inner wall of the connector.

[0010] In a preferred embodiment, the top of the upper mounting plate has a circular hole, the bottom of the circular hole has a through hole, the top of the connecting pipe has an abutment plate, the abutment plate is installed on the inner wall of the circular hole, and the connecting pipe is inserted into the inner wall of the through hole.

[0011] By adopting the above technical solution, the mating plate can be stably installed on the inner wall of the round hole with the matching bolts, thereby ensuring that the connecting pipe is stably set on the inner wall of the through hole and that it will not easily move when subjected to thrust.

[0012] In a preferred embodiment, the tooling body and the punch assembly are positioned correspondingly.

[0013] By adopting the above technical solution, the driveable punch assembly can move downwards to cooperate with the tooling body to forge the parts.

[0014] In a preferred embodiment, the disc spring is made of a high-temperature alloy material, and the compression spring is made of chrome vanadium steel.

[0015] By adopting the above technical solutions, the disc springs made of high-temperature alloy materials can be used to ensure their temperature resistance, and the compression springs made of chromium vanadium steel can be used to make them have high elasticity and fatigue resistance, thus ensuring their overall service life.

[0016] In a preferred embodiment, the surface of the guide post is plated with chromium, and the guide post is made of cemented carbide.

[0017] By adopting the above technical solutions, wear resistance can be enhanced.

[0018] The beneficial effects of this application are: This is a multi-hole spiral tooling for presses with thermal stress buffering. By setting disc springs and compression springs to generate reaction force, it can offset thermal stress and avoid workpiece clamping too tightly or too loosely. Furthermore, the use of high-temperature alloy disc springs and chrome vanadium steel compression springs ensures the long-term stable operation of the tooling in high-temperature environments.

[0019] This is a multi-hole spiral tooling for presses with thermal stress buffering. The design of setting four guide columns significantly improves the stability of the tooling and prevents skewing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the cross-sectional structure of the positioning seat in this application; Figure 3 This is a schematic diagram of the connecting plate structure of this application; Figure 4 This is a schematic diagram of the unfolded structure of this application; Figure 5 This is a schematic diagram of the disc spring structure of this application.

[0021] Explanation of reference numerals in the attached figures: 1. Base; 2. Mounting hole; 3. Guide post; 4. Positioning seat; 5. Circular groove; 6. Compression spring; 7. Pressure plate; 8. Tooling body; 9. Upper mounting plate; 10. Connecting pipe; 11. Punch assembly; 12. Connecting post; 13. Disc spring; 14. Connecting plate; 15. Circular hole; 16. Through hole; 17. Abutment plate. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0023] Reference Figure 1-5 A multi-hole spiral tooling for a thermal stress buffer press includes a base 1 and an upper mounting plate 9. The inner wall of the base 1 has mounting holes 2, and guide columns 3 are installed on the inner wall of the mounting holes 2. A positioning seat 4 is installed on the top of the base 1. Four buffer components are installed inside the positioning seat 4. The tooling body 8 is installed inside the positioning seat 4. Four connecting pipes 10 are symmetrically installed on the bottom of the upper mounting plate 9. A punch assembly 11 is installed on the bottom of the upper mounting plate 9. Four docking columns 12 are installed on the inner wall of the upper mounting plate 9. A connecting plate 14 is installed on the outer edge of the four docking columns 12. Disc springs 13 are sleeved on the outer edge of each of the four docking columns 12, and the bottom of each of the four disc springs 13 abuts against the top of the connecting plate 14.

[0024] See Figure 2The buffer assembly includes a circular groove 5, which is located on the top of the positioning seat 4. One end of a compression spring 6 is fixedly connected to the inner wall of the circular groove 5, and the other end of the compression spring 6 is fixedly connected to a pressure plate 7. The pressure plate 7 is adapted to slide on the inner wall of the circular groove 5, so that the elastic force of the compression spring 6 can be used to provide a reaction force to buffer thermal stress. The bottom of the docking post 12 is inserted into the inner wall of the circular groove 5, which can push the pressure plate 7 to slide up and down on the inner wall of the circular groove 5, and further apply a compressive force to the compression spring 6.

[0025] See Figure 1 - Figure 4 There are four mounting holes 2 and four guide posts 3, and the four mounting holes 2 and four guide posts 3 are symmetrically arranged on the top of the base 1. The positions of the four connecting pipes 10 and the four guide posts 3 are corresponding, so that the upper mounting plate 9 can be limited, ensuring that the guide posts 3 will not easily tilt after being inserted into the inner wall of the connecting pipe 10.

[0026] See Figure 4 The top of the upper mounting plate 9 has a round hole 15, and the bottom of the round hole 15 has a through hole 16. The top of the connecting pipe 10 is equipped with an abutment plate 17, which is installed on the inner wall of the round hole 15. The connecting pipe 10 is inserted into the inner wall of the through hole 16, so that the abutment plate 17 can be stably installed on the inner wall of the round hole 15 with the help of bolts. This ensures that the connecting pipe 10 is stably set on the inner wall of the through hole 16 and will not easily move when subjected to thrust.

[0027] See Figure 2 and Figure 5 The tooling body 8 and the punch assembly 11 are positioned correspondingly, so that the punch assembly 11 can be driven to move downward to cooperate with the tooling body 8 to perform forging processing on the workpiece.

[0028] See Figure 2 and Figure 5 The disc spring 13 is made of high-temperature alloy material, and the compression spring 6 is made of chrome vanadium steel. This allows the disc spring 13, made of high-temperature alloy material, to have high temperature resistance, while the compression spring 6, made of chrome vanadium steel, has high elasticity and fatigue resistance, ensuring the overall service life.

[0029] See Figure 2 The surface of the guide post 3 is plated with chromium, and the guide post 3 is made of hard alloy, which enhances its wear resistance.

[0030] Working principle: During the forging process, the workpiece expands due to heat, pushing the tooling body 8 to move outward. At this time, the disc spring 13 and the compression spring 6 generate a reaction force, which can offset the thermal stress. When cooling, the workpiece contracts, and the disc spring 13 and the compression spring 6 release the extrusion pressure and automatically rebound, maintaining the tooling body 8's stable clamping of the workpiece. Furthermore, the guide column 3 can be used to limit the lateral displacement of the device, preventing skewing and ensuring stability.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.

Claims

1. A multi-hole spiral tooling for a thermal stress buffering press, comprising a base (1) and an upper mounting plate (9), characterized in that, The base (1) has an installation hole (2) on its inner wall. A guide post (3) is installed on the inner wall of the installation hole (2). A positioning seat (4) is installed on the top of the base (1). Four buffer components are installed inside the positioning seat (4). A tooling body (8) is installed inside the positioning seat (4). Four connecting pipes (10) are symmetrically installed on the bottom of the upper mounting plate (9). A punch assembly (11) is installed on the bottom of the upper mounting plate (9). Four docking posts (12) are installed on the inner wall of the upper mounting plate (9). A connecting plate (14) is installed on the outer edge of the four docking posts (12). A disc spring (13) is sleeved on the outer edge of each of the four docking posts (12). The bottom of each of the four disc springs (13) abuts against the top of the connecting plate (14).

2. The multi-hole spiral tooling for a press with thermal stress buffering according to claim 1, characterized in that, The buffer assembly includes a circular groove (5), which is located on the top of the positioning seat (4). One end of a compression spring (6) is fixedly connected to the inner wall of the circular groove (5), and the other end of the compression spring (6) is fixedly connected to a pressure plate (7). The pressure plate (7) is adapted to slide on the inner wall of the circular groove (5).

3. The multi-hole spiral tooling for a press with thermal stress buffering according to claim 1, characterized in that, The number of mounting holes (2) and guide posts (3) is four, and the four mounting holes (2) and guide posts (3) are symmetrically arranged on the top of the base (1). The positions of the four connecting pipes (10) and the four guide posts (3) are corresponding.

4. The multi-hole spiral tooling for a press with thermal stress buffering according to claim 1, characterized in that, The top of the upper mounting plate (9) is provided with a round hole (15), and the bottom of the round hole (15) is provided with a through hole (16). The top of the connecting pipe (10) is provided with an abutment plate (17), the abutment plate (17) is installed on the inner wall of the round hole (15), and the connecting pipe (10) is inserted into the inner wall of the through hole (16).

5. The multi-hole spiral tooling for a press with thermal stress buffering according to claim 1, characterized in that, The tooling body (8) and the punch assembly (11) are positioned correspondingly.

6. The multi-hole spiral tooling for a press with thermal stress buffering according to claim 2, characterized in that, The disc spring (13) is made of high-temperature alloy material, and the compression spring (6) is made of chromium vanadium steel.

7. A multi-hole spiral tooling for a press with thermal stress buffering according to claim 1, characterized in that, The surface of the guide post (3) is plated with chromium, and the guide post (3) is made of hard alloy.

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