Tool for static pressure of belleville spring set

Abstract

A tool about static pressure of a belleville spring assembly comprises a base, a top cover and a pressing rod, the top of the base is in threaded connection with the lower end face of the top cover, the belleville spring assembly is stacked in the base, and the pressing rod is connected with the base and the top cover in an inserted mode and conducts static pressure on the belleville spring assembly. According to the utility model, through a specific structure, the disc spring group can be ensured to be stably fixed together in the static pressure process, the problem of insufficient static pressure caused by sliding is effectively avoided, the height of the disc spring group can be more accurately measured, and all related sizes are ensured to meet the requirements of design drawings.

Description

Technical Field

[0001] The utility model relates to the technical field of disc spring production, in particular to a tooling for static pressure of a disc spring group. Background Art

[0002] Due to its unique geometric shape and excellent elastic properties, disc springs are widely used in many industrial fields, especially as buffer elements during the part assembly process. To ensure their reliability and stability during use, disc springs are usually used in groups, and multiple pieces are stacked to provide the required elasticity and stiffness.

[0003] However, in the traditional disc spring manufacturing process, individual disc springs are usually formed by stamping. Although this process is efficient, it is difficult to avoid slight dimensional deviations in the finished products. These deviations may cause adjacent two pieces in the disc spring group to not fully fit during assembly, resulting in gaps. These gaps will not only affect the working performance of the entire disc spring group but may also cause additional vibration and noise problems when it bears loads.

[0004] To solve this problem, static pressure treatment is usually carried out on the disc spring group, that is, by applying a continuous pressure for a long time (such as 48 hours) to eliminate the gaps between the springs and stabilize their dimensions. Although this method is effective, there are still some challenges in actual operation:

[0005] 1. During the static pressure process, due to possible insufficient lubrication or changes in the surface friction coefficient between the disc springs, relative sliding is likely to occur between them, which will reduce the static pressure effect and cannot completely eliminate the gaps;

[0006] 2. To achieve the expected static pressure effect, a constant pressure must be maintained throughout the process. This usually requires special equipment and increases the complexity of the process;

[0007] 3. After the static pressure is completed, it is necessary to accurately measure the height of the disc spring group to evaluate the static pressure effect. However, due to the special structure of the disc spring group and the slight dimensional changes, using conventional methods for height measurement is often not accurate enough, which also limits the effectiveness of product quality control. Summary of the Utility Model

[0008] The technical problem to be solved by the utility model is to provide a tooling for static pressure of a disc spring group, aiming to improve the static pressure effect of the disc spring group and the subsequent height measurement accuracy.

[0009] To solve the above technical problems, the technical solution adopted by the utility model is:

[0010] A tooling for static pressure of a disc spring group, comprising a base, a top cover and a pressure rod. The top of the base is threadedly connected to the lower end face of the top cover. The disc spring assembly is stacked inside the base, and the pressure rod is inserted into the base and the top cover to apply static pressure to the disc spring assembly.

[0011] In a preferred embodiment, the base includes a placement cylinder and a base. The upper end face of the base is perpendicularly connected and coaxially arranged with the lower end face of the placement cylinder. A placement groove is formed inside the placement cylinder, and the placement groove communicates with the top surface of the placement cylinder. A first through hole is formed in the lower end face of the base and communicates with the placement groove.

[0012] In a preferred embodiment, the inner diameter of the placement groove is close to the outer diameter of the disc spring assembly, and the aperture of the first through hole is close to the rod diameter of the pressure rod.

[0013] In a preferred embodiment, an external thread is provided at the upper end face of the placement cylinder, and a clamping groove is formed at the lower end face of the top cover. The top cover is threadedly connected to the external thread of the placement cylinder through the clamping groove.

[0014] In a preferred embodiment, a second through hole is formed in the upper end face of the top cover, and the aperture of the second through hole is close to the rod diameter of the pressure rod.

[0015] In a preferred embodiment, a convex ring is provided on the outer wall of the pressure rod, and the outer diameter of the convex ring is close to the inner diameter of the placement groove inside the placement cylinder.

[0016] In a preferred embodiment, a scale bar is engraved on the outer wall of the pressure rod.

[0017] In a preferred embodiment, the base is composed of two left and right parts. An ear plate is provided on the side of the base, and a threaded hole is formed in the ear plate. After the fastening bolt passes through the threaded hole, the base is connected and fixed.

[0018] A tooling for static pressure of a disc spring group has the following beneficial effects during actual use:

[0019] 1. The design of the tooling ensures that the disc spring group can be firmly fixed together during static pressure, effectively avoiding the problem of insufficient static pressure caused by sliding.

[0020] 2. The tooling of the present invention is combined with the existing equipment in the factory, which can ensure that a constant pressure is continuously applied during the whole static pressure process, so as to achieve the expected static pressure effect.

[0021] 2. After the static pressure is completed, the improved tooling can be used to more accurately measure the height of the disc spring group to ensure that all relevant dimensions meet the requirements of the design drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0023] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0024] Figure 2 Cross-sectional view of the overall structure of the present utility model;

[0025] Figure 3 Exploded view of the overall structure of the present utility model;

[0026] Figure 4 Planar cross-sectional view of the internal structure of the present utility model;

[0027] Figure 5 Partially enlarged view of the structure of the base part of the present utility model.

[0028] In the figure: base 1, placing cylinder 101, base 102, first through hole 103, external thread 104, ear plate 105, threaded hole 106, top cover 2, card slot 201, second through hole 202, pressing rod 3, convex ring 301, scale bar 302, disc spring assembly 4, fastening bolt 5. Specific implementation manner

[0029] As Figures 1 to 3 shown, a tooling for the static pressure of a disc spring group includes a base 1, a top cover 2 and a pressing rod 3. The top of the base 1 is threadedly connected to the lower end surface of the top cover 2. The disc spring assembly 4 is stacked inside the base 1, and the pressing rod 3 is inserted into the base 1 and the top cover 2 to apply static pressure to the disc spring assembly 4.

[0030] The preferred solution is as Figures 2 to 4 shown. The base 1 includes a placing cylinder 101 and a base 102. The upper end surface of the base 102 is perpendicularly connected to the lower end surface of the placing cylinder 101 and is coaxially arranged. A placing groove is provided inside the placing cylinder 101, and the placing groove communicates with the top surface of the placing cylinder 101. A first through hole 103 is provided on the lower end surface of the base 102 and communicates with the placing groove. The inner diameter of the placing groove is close to the outer diameter of the disc spring assembly 4, and the aperture of the first through hole 103 is close to the rod diameter of the pressing rod 3. With the above structure, the disc spring assembly 4 can be smoothly placed into the placing groove inside the placing cylinder 101, and the pressing rod 3 can be smoothly inserted into the base 1.

[0031] The preferred solution is as Figures 2 to 4 shown. An external thread 104 is provided at the upper end surface of the placing cylinder 101, and a card slot 201 is provided at the lower end surface of the top cover 2. The top cover 2 is threadedly connected to the external thread 104 of the placing cylinder 101 through the card slot 201. A second through hole 202 is provided at the upper end surface of the top cover 2, and the aperture of the second through hole 202 is close to the rod diameter of the pressing rod 3;

[0032] With the above structure, the compression bar 3 can be inserted into the placement cylinder 101 first, and then the top cover 2 is passed through the compression bar 3 and threadedly connected to the placement cylinder 101, thereby further limiting the compression bar 3 and enabling the compression bar 3 to slide along the axes of the base 1 and the top cover 2 and statically press the disc spring assembly 4.

[0033] A preferred solution is as Figures 2 to 4 shown. A convex ring 301 is provided on the outer wall of the compression bar 3, and the outer diameter of the convex ring 301 is close to the inner diameter of the placement groove in the placement cylinder 101;

[0034] When the device works, a continuous downward pressure is applied to the compression bar by an external press. The convex ring 301 can not only prevent the compression bar 3 from sliding out of the top cover 2, but also apply a continuous pressure to the disc spring assembly 4.

[0035] A preferred solution is as Figure 4 shown. A scale bar 302 is engraved on the outer wall of the compression bar 3. By observing the scale bar 302, the height of the disc spring group can be measured more accurately to ensure that all relevant dimensions meet the requirements of the design drawings.

[0036] A preferred solution is as Figure 5 shown. The base 1 is composed of two left and right parts. An ear plate 105 is provided on the side of the base 102, and a threaded hole 106 is provided on the ear plate 105. After the fastening bolt 5 passes through the threaded hole 106, the base 1 is connected and fixed; with the above structure, the base 1 can be quickly disassembled, and the formed disc spring assembly 4 inside the base 1 can be taken out.

[0037] The working principle of the device is as follows:

[0038] 1. First, the disc spring assemblies 4 are sequentially loaded into the placement grooves inside the placement cylinder 101 and stacked in sequence;

[0039] 2. Insert the compression bar 3 into the placement cylinder 101 and pass through the disc spring assemblies 4. The convex ring 301 on the outer wall of the compression bar 3 abuts against the disc spring assemblies 4;

[0040] 3. Pass the top cover 2 through the compression bar 3 and threadedly connect it to the placement cylinder 101, thereby further limiting the compression bar 3 and preventing the compression bar 3 from sliding out from the upper end;

[0041] 4. Apply a continuous downward pressure to the compression bar 3 by an external press, and the convex ring 301 applies a downward static pressure to the disc spring assemblies 4;

[0042] 5. After the static pressure is completed, the gaps between the disc springs are eliminated and the dimensions are stable. The free height of the disc spring assembly 4 is accurately measured through the scale bar 302 on the outer wall of the compression bar 3.

Claims

1. A tool for static pressure of a disc spring assembly, comprising a base (1), a top cover (2) and a pressure rod (3), characterized in that: The top of the base (1) is threadedly connected to the lower end surface of the top cover (2), the butterfly spring assembly (4) is stacked inside the base (1), and the pressure rod (3) is plugged into the base (1) and the top cover (2) to statically press the butterfly spring assembly (4).

2. The tooling for static pressure of disc spring assembly according to claim 1, characterized in that: The base (1) comprises a placement tube (101) and a base (102); the upper end surface of the base (102) is vertically connected to the lower end surface of the placement tube (101) and is coaxially arranged; a placement groove is provided in the placement tube (101), the placement groove is connected to the top surface of the placement tube (101); and a first through hole (103) is provided on the lower end surface of the base (102) and is connected to the placement groove.

3. The tooling for static pressure of disc spring assembly according to claim 2, characterized in that: The inner diameter of the placement groove is close to the outer diameter of the butterfly spring assembly (4), and the hole diameter of the first through hole (103) is close to the rod diameter of the pressure rod (3).

4. The tooling for static pressure of disc spring assembly according to claim 2, characterized in that: An external thread (104) is provided at the upper end surface of the placement tube (101), and a clamping groove (201) is provided at the lower end surface of the top cover (2). The top cover (2) is threadably connected to the external thread (104) of the placement tube (101) via the clamping groove (201).

5. The tooling for static pressure of disc spring assembly according to claim 4, characterized in that: A second through hole (202) is provided on the upper end surface of the top cover (2), and the diameter of the second through hole (202) is similar to the diameter of the pressure rod (3).

6. The tooling for static pressure of disc spring assembly according to claim 2, characterized in that: A convex ring (301) is provided on the outer wall of the pressure rod (3), and the outer diameter of the convex ring (301) is similar to the inner diameter of the placement groove in the placement cylinder (101).

7. The tooling for static pressure of disc spring assembly according to claim 1, characterized in that: A scale bar (302) is engraved on the outer wall of the pressure rod (3).

8. The tooling for static pressure of disc spring assembly according to claim 2, characterized in that: The base (1) is formed by splicing two left and right pieces. The side of the base (102) is provided with an ear plate (105). The ear plate (105) is provided with a threaded hole (106). The fastening bolt (5) passes through the threaded hole (106) to connect and fix the base (1).

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