A hot and strong press processing tool for a diaphragm spring

Abstract

This utility model relates to the field of automotive clutch technology, and in particular to a hot-pressing processing fixture for diaphragm springs, including a first support plate and a second support plate; it also includes a first hot pressing plate and a second hot pressing plate. The first hot pressing plate is mounted on the first support plate, and the second support plate is disposed on the first hot pressing plate. The second hot pressing plate is mounted at the bottom of the second support plate. The diaphragm spring is clamped and fixed between the first and second hot pressing plates. A first cooling chamber is formed in the first hot pressing plate, and a second cooling chamber is formed in the second hot pressing plate. This utility model, based on the existing characteristics of spring steel materials and the working principle of hot pressing, redesigns a new hot pressing mold. The contact surfaces of the first and second hot pressing plates are inclined, which better fits the shape of the diaphragm spring and can provide sufficient support for the diaphragm spring during hot pressing processing, ensuring the stability and consistency of the hot pressing. The first and second cooling chambers are filled with flowing cooling water.

Description

Technical Field

[0001] This utility model belongs to the field of automotive clutch technology, specifically relating to a hot-press processing tooling for diaphragm springs. Background Technology

[0002] As a core component of modern automotive transmission systems, diaphragm spring clutches are widely used in passenger and commercial vehicles due to their unique nonlinear elastic characteristics. The key functional element of this clutch—the diaphragm spring—is integrated within the clutch cover assembly. Its special mechanical behavior manifests as follows: when the driven disc friction plates wear due to long-term operation, the diaphragm spring can autonomously compensate for pressure loss, maintaining a stable clamping force output. This ensures the efficient and smooth transmission of engine torque to the transmission system. With the accelerated intelligent upgrading of the automotive industry, the penetration rate of AMT (Automated Manual Transmission) models in the heavy-duty commercial vehicle market continues to increase. However, the transformation from traditional MT clutches to AMT systems faces significant technological barriers.

[0003] Currently, there is a fundamental conflict between the thermal stability of the material of the diaphragm spring in the traditional MT clutch and the high-temperature operating requirements of the AMT system. The working stability of the MT clutch is poor in the temperature range of the AMT clutch, with a fatigue decay of about 15% at 130℃. The AMT clutch is mainly based on system integration and control strategies, which cannot cope with the performance fluctuations of the traditional clutch. It is necessary to improve the stability and anti-fading of the diaphragm spring.

[0004] Therefore, to address the issue that the diaphragm spring's stability and resistance to attenuation are poor due to temperature range differences during the transition from MT clutch to AMT clutch, a hot-press processing fixture for the diaphragm spring can be designed. Utility Model Content

[0005] In order to overcome the problem that the diaphragm spring has poor stability and anti-fading properties due to the difference in temperature range during the transition from MT clutch to AMT clutch.

[0006] The technical solution of this utility model is as follows: a hot pressing tooling for diaphragm springs, including a first support plate and a second support plate; it also includes a first hot pressing plate and a second hot pressing plate, the first support plate is mounted on the first support plate, the second support plate is disposed on the first hot pressing plate, the second hot pressing plate is mounted at the bottom of the second support plate, the diaphragm spring is clamped and fixed between the first hot pressing plate and the second hot pressing plate, the first hot pressing plate has a first cooling cavity, and the second hot pressing plate has a second cooling cavity.

[0007] Preferably, the No. 1 and No. 2 hot press plates are installed and fixed by the No. 1 support plate and the No. 2 support plate. At the same time, the No. 1 and No. 2 support plates can seal the No. 1 and No. 2 cooling chambers, and cooling water is poured into the No. 1 and No. 2 cooling chambers for cooling during processing.

[0008] As a preferred embodiment, the No. 1 cooling chamber is provided with multiple No. 1 partitions arranged in a staggered annular pattern, and the No. 1 partitions are fixedly connected to the No. 1 hot press plate.

[0009] Preferably, the second cooling chamber is provided with multiple second partitions arranged in a staggered annular pattern, and the second partitions are fixedly connected to the second hot press plate.

[0010] As a preferred embodiment, a No. 1 water inlet pipe is provided on the No. 1 support plate, which passes through itself and communicates with the No. 1 cooling chamber, and a No. 1 drain pipe is provided on the No. 1 support plate, which is opposite to the No. 1 water inlet pipe.

[0011] As a preferred embodiment, the second support plate is provided with a second water inlet pipe that runs through itself and communicates with the second cooling chamber, and the second support plate is provided with a second drain pipe that is opposite to the second water inlet pipe.

[0012] As a preferred embodiment, the top of the No. 1 support plate is fixedly connected to the No. 1 anchoring hole, and the top of the No. 1 hot press plate is provided with the No. 1 storage groove, and the No. 1 storage groove is provided with the No. 2 anchoring hole that penetrates the No. 1 hot press plate.

[0013] As a preferred embodiment, the top of the No. 2 support plate is fixedly connected with the No. 3 anchoring hole, and the bottom of the No. 2 hot press plate is provided with the No. 2 storage groove, and the No. 4 anchoring hole penetrating the No. 1 hot press plate is provided in the No. 2 storage groove.

[0014] The beneficial effects of this utility model are:

[0015] Based on the existing characteristics of spring steel materials and the working principle of hot pressing, a new hot pressing mold was designed. The contact surfaces of the No. 1 and No. 2 hot pressing plates are inclined, which better fits the shape of the diaphragm spring and can provide sufficient support for the diaphragm spring during the hot pressing process, ensuring the stability and consistency of the hot pressing. The No. 1 and No. 2 cooling chambers are filled with flowing cooling water, which can cool the spring quickly. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural diagram of the hot-press processing tooling of this utility model;

[0017] Figure 2 The diagram shown is a three-dimensional structural schematic of the hot pressing tooling of this utility model.

[0018] Figure 3 The diagram shown is a first three-dimensional structural schematic of the No. 1 hot press plate of this utility model;

[0019] Figure 4 The diagram shown is a two-dimensional structural schematic of the first hot press plate of this utility model.

[0020] Figure 5 The diagram shown is a first three-dimensional structural schematic of the No. 2 hot press plate of this utility model;

[0021] Figure 6 The diagram shown is a two-dimensional structural schematic of the second hot press plate of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Support plate No. 1; 2. Support plate No. 2; 3. Hot press plate No. 1; 4. Hot press plate No. 2; 5. Cooling chamber No. 1; 6. Cooling chamber No. 2; 7. Partition No. 1; 8. Partition No. 2; 9. Water inlet pipe No. 1; 10. Drain pipe No. 1; 11. Water inlet pipe No. 2; 12. Drain pipe No. 2; 13. Anchor hole No. 1; 14. Storage groove No. 1; 15. Anchor hole No. 2; 16. Anchor hole No. 3; 17. Storage groove No. 2; 18. Anchor hole No. 4. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-6 This utility model provides an embodiment: a hot pressing tooling for diaphragm springs, including a first support plate 1 and a second support plate 2; it also includes a first hot pressing plate 3 and a second hot pressing plate 4. The first hot pressing plate 3 is mounted on the first support plate 1, the second support plate 2 is mounted on the first hot pressing plate 3, and the second hot pressing plate 4 is mounted at the bottom of the second support plate 2. The diaphragm spring is clamped and fixed between the first hot pressing plate 3 and the second hot pressing plate 4. A first cooling chamber 5 is formed in the first hot pressing plate 3, and a second cooling chamber 6 is formed in the second hot pressing plate 4. The first support plate 1 and the second support plate 2 are used to install and fix the first hot pressing plate 3 and the second hot pressing plate 4. At the same time, the first support plate 1 and the second support plate 2 can seal the first cooling chamber 5 and the second cooling chamber 6. Cooling water is poured into the first cooling chamber 5 and the second cooling chamber 6 for cooling during processing.

[0025] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5In this embodiment, multiple first baffles 7 are arranged in a staggered annular pattern within the first cooling chamber 5. The first baffles 7 are fixedly connected to the first hot press plate 3. The design of the first baffles 7 increases the complexity of the interior of the first cooling chamber 5. The main function of the first baffles 7 is to change the water flow path, causing it to form a deflection within the chamber, thereby extending the water's travel distance and increasing the contact time between the cooling water and the first hot press plate 3, promoting heat dissipation and cooling. The tortuous layout of the first baffles 7 forces the water flow to detour, extending the water flow path and improving heat dissipation efficiency. Multiple second baffles 8 are arranged in a staggered annular pattern within the second cooling chamber 6. The second baffles 8 are fixedly connected to the second hot press plate 4. The function of the second baffles 8 is the same as that of the first baffles 7: to increase the travel distance of the cooling water, thereby increasing... The contact time between the cooling water and the second hot press plate 4 is increased, and the heat of the diaphragm spring between the first hot press plate 3 and the second hot press plate 4 is carried away by the cooling water. The first support plate 1 has a first water inlet pipe 9 that runs through itself and is the same as the first cooling chamber 5. The first support plate 1 has a first drain pipe 10 that is opposite to the first water inlet pipe 9. The cooling water is poured into the first cooling tank through the first water inlet pipe 9 and then discharged through the first drain pipe 10, thereby realizing the circulation of cooling water and improving the cooling efficiency. The second support plate 2 has a second water inlet pipe 11 that runs through itself and is the same as the second cooling chamber 6. The second support plate 2 has a second drain pipe 12 that is opposite to the second water inlet pipe 11. The second water inlet pipe 11 and the second drain pipe 12 have the same function as the first water inlet pipe 9 and the first drain pipe 10.

[0026] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 In this embodiment, the top of the first support plate 1 is fixedly connected to the first anchoring hole 13, and the top of the first hot press plate 3 is provided with the first receiving groove 14. The first receiving groove 14 is provided with the second anchoring hole 15 penetrating the first hot press plate 3. By sequentially threading the anchor into the second anchoring hole 15 and the first anchoring hole 13, the first support plate 1 and the first hot press plate 3 can be fixed. The existence of the first receiving groove 14 can accommodate the nut structure of the anchor and prevent the protruding screw. The cap structure affects the fit between the No. 1 hot press plate 3 and the No. 2 hot press plate 4. The top of the No. 2 support plate 2 is fixedly connected to the No. 3 anchoring hole 16. The bottom of the No. 2 hot press plate 4 is provided with the No. 2 storage groove 17. The No. 4 anchoring hole 18 is provided in the No. 2 storage groove 17, which penetrates the No. 1 hot press plate 3. The anchor is then threaded to the No. 4 anchoring hole 18 and the No. 3 anchoring hole 16 in sequence to fix the No. 2 support plate 2 and the No. 2 hot press plate 4. The function of the No. 2 storage groove 17 is the same as that of the No. 1 storage groove 14.

[0027] As a further technical supplement to this solution, hot pressing is a method to improve the structure and performance of spring materials through high-temperature high-pressure treatment, thereby increasing the load-bearing capacity and fatigue strength of the spring and ensuring its stability and reliability at high temperatures. In the hot pressing process, the spring is heated to a certain temperature, and under heating, the spring is deformed to a certain extent, causing plastic deformation of its internal materials. Under the condition of maintaining a certain temperature and pressure, a phase change occurs inside the spring material, which can eliminate the internal stress and residual stress generated during the manufacturing process. The device structure in this design utilizes this characteristic to achieve the purpose of hot pressing processing of diaphragm springs.

[0028] During installation, first place the No. 1 hot press plate 3 on the No. 1 support plate 1, so that the No. 2 anchor hole 15 is directly above the No. 1 anchor hole 13. Then, thread the anchor threaded connection through the No. 2 anchor hole 15 and the No. 1 anchor hole 13 in sequence to fix the No. 1 hot press plate 3 on the No. 1 support plate 1. Then, place the No. 2 hot press plate 4 below the No. 2 support plate 2, so that the No. 4 anchor hole 18 is directly below the No. 3 anchor hole 16. Then, thread the anchor threaded connection through the No. 4 anchor hole 18 and the No. 3 anchor hole 16 to fix the No. 2 hot press plate 4 to the No. 2 support plate 2.

[0029] The second hot press plate 4 moves downward to cooperate with the first hot press plate 3 to perform hot pressing on the diaphragm spring at the center. When cooling is required, cooling water is introduced into the first cooling chamber 5 and the second cooling chamber 6 from the first water inlet pipe 9 and the second water inlet pipe 11 respectively. The cooling water flows in the first cooling chamber 5 and the second cooling chamber 6, thereby driving the heat of the diaphragm spring, and then discharged through the first drain pipe 10 and the second drain pipe 12. The cooling effect of the diaphragm spring is achieved through the circulation of cooling water.

[0030] Through the above steps, based on the existing characteristics of spring steel materials and the working principle of hot pressing, a new hot pressing mold is designed. The contact surfaces of the No. 1 hot pressing plate 3 and the No. 2 hot pressing plate 4 are inclined, which better fits the shape of the diaphragm spring and can provide sufficient support for the diaphragm spring during the hot pressing process, ensuring the stability and consistency of the hot pressing. The No. 1 cooling chamber 5 and the No. 2 cooling chamber 6 are filled with flowing cooling water, which can quickly cool the diaphragm spring and solve the problem that the difference in temperature range can easily lead to poor stability and anti-fading of the diaphragm spring during the transition from MT clutch to AMT clutch.

Claims

1. A hot-pressing tooling for diaphragm springs, comprising a first support plate (1) and a second support plate (2); characterized in that: It also includes a No. 1 hot press plate (3) and a No. 2 hot press plate (4). The No. 1 hot press plate (3) is installed on the No. 1 support plate (1). The No. 2 support plate (2) is set on the No. 1 hot press plate (3). The No. 2 hot press plate (4) is installed at the bottom of the No. 2 support plate (2). The diaphragm spring is clamped and fixed between the No. 1 hot press plate (3) and the No. 2 hot press plate (4). The No. 1 hot press plate (3) has a No. 1 cooling chamber (5). The No. 2 hot press plate (4) has a No. 2 cooling chamber (6).

2. The hot pressing tooling for processing diaphragm springs according to claim 1, characterized in that: The first cooling chamber (5) is equipped with multiple first partitions (7) arranged in a staggered annular pattern, and the first partitions (7) are fixedly connected to the first hot press plate (3).

3. The hot pressing tooling for processing diaphragm springs according to claim 1, characterized in that: The second cooling chamber (6) is equipped with multiple second partitions (8) arranged in a staggered annular pattern. The second partitions (8) are fixedly connected to the second hot press plate (4).

4. The hot pressing tooling for processing diaphragm springs according to claim 2, characterized in that: A No. 1 water inlet pipe (9) is provided on the No. 1 support plate (1) and communicates with the No. 1 cooling chamber (5). A No. 1 drain pipe (10) is provided on the No. 1 support plate (1) opposite to the No. 1 water inlet pipe (9).

5. The hot pressing tooling for processing diaphragm springs according to claim 3, characterized in that: The No. 2 support plate (2) is provided with a No. 2 water inlet pipe (11) that runs through itself and communicates with the No. 2 cooling chamber (6), and the No. 2 support plate (2) is provided with a No. 2 drain pipe (12) that is opposite to the No. 2 water inlet pipe (11).

6. The hot pressing tooling for processing diaphragm springs according to claim 1, characterized in that: The top of the No. 1 support plate (1) is fixedly connected to the No. 1 anchor hole (13), and the top of the No. 1 hot press plate (3) has a No. 1 storage groove (14), and the No. 1 storage groove (14) has a No. 2 anchor hole (15) that penetrates the No. 1 hot press plate (3).

7. The hot pressing tooling for processing diaphragm springs according to claim 1, characterized in that: The top of the No. 2 support plate (2) is fixedly connected to the No. 3 anchor hole (16), and the bottom of the No. 2 hot press plate (4) is provided with the No. 2 storage groove (17), and the No. 4 anchor hole (18) that penetrates the No. 1 hot press plate (3) is provided in the No. 2 storage groove (17).

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