A clamp spring assembly tool

Abstract

The utility model discloses a kind of clamping spring assembly technology, to provide a kind of clamping spring assembly tool, its technical solution main point is including sleeve, the sleeve top is provided with integrally-formed pressure support, the sleeve inner bottom is provided with the fixed rod for preloading clamping spring and for passing through sleeve, the sleeve inner is located above fixed rod and is provided with the compression spring for pre-pressing positioning, the sleeve inner is located above compression spring and is provided with the filler for adjusting pre-pressing force, flat head screw for fixing filler is arranged in the pressure support and is fixedly connected with sleeve;The design of overall structure not only improves the precision of tool, but also reduces the labor intensity of operator;The utility model is suitable for clamping spring assembly technical field.

Description

Technical Field

[0001] This utility model relates to a snap ring assembly technology, and more specifically, to a snap ring assembly tooling. Background Technology

[0002] Currently, the most mature and widely used brake pad technology is the powder metallurgy floating brake pad, which mainly consists of friction blocks, a triangular bracket, a backing plate, and a retaining spring. The friction blocks can partially float, thereby achieving the maximum effective contact area with the brake disc and a more stable and uniform braking pressure. During the assembly of the friction elements and the brake pad, the securing effect of the retaining spring is crucial. Existing handheld assembly fixtures have the following drawbacks:

[0003] 1. High-speed rail brake pads are multi-part assembly structures, in which the retaining spring is assembled using assembly fixtures. Existing retaining spring assembly fixtures include a sleeve and a fixing rod. The sleeve has an internal space for accommodating the fixing rod, and the front end of the fixing rod has an inner stepped positioning part. When assembling the retaining spring with the component to be assembled, it is first positioned with the component by the positioning part at the front end of the fixing rod, and then the sleeve is pushed downwards, thereby moving the retaining spring downwards until it reaches the assembly position of the component to be assembled.

[0004] However, during assembly, the connecting part of the friction block connector to be assembled must be completely covered within the fixing rod of the retaining spring assembly fixture. When pressing down to assemble, the inner diameter of the retaining spring will be subjected to an outward expansion force, and then it will be fixed in the specified installation position. The maximum deformation of the retaining spring in the assembly fixture is at the point where the diameter of the fixture fixing rod is the largest. A large deformation will cause high stress on the retaining spring, resulting in deformation or internal damage.

[0005] 2. The assembly success rate is low. During the tooling pressing process, the retaining spring gradually disengages from the fixing rod. At the moment of disengagement, the positioning part disengages from the connecting part of the friction block connector under the action of the retaining spring's contraction force. The operator needs to apply pressure quickly, accurately, and forcefully to succeed, which places high demands on the operator.

[0006] 3. Because the snap ring structure has a small opening and a large spring force, the existing handheld snap ring tool requires a lot of force to push the snap ring into the fixing rod when pre-installing it, which is quite strenuous for the operator after long-term use. Utility Model Content

[0007] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a snap ring assembly tool.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a retaining ring assembly fixture, including a sleeve, an integrally formed pressure bracket at the top of the sleeve, a fixing rod penetrating the sleeve and used for pre-installing the retaining ring at the bottom of the sleeve, a compression spring for pre-tightening and positioning located above the fixing rod located inside the sleeve, a filler for adjusting the pre-tightening force located above the compression spring located inside the sleeve, and a flat-head screw fixedly connected to the sleeve and used to fix the filler located inside the pressure bracket.

[0009] The present invention is further configured such that: a limiting member is provided inside the sleeve to prevent the fixing rod from falling off and rotating.

[0010] The present invention is further configured such that: the fixing rod includes a fixing part located inside the sleeve, a positioning part located outside the sleeve, and a flat column located outside the sleeve for connecting the fixing part and the positioning part; the fixing part is provided with a limiting part for cooperating with the limiting member to form a limiting position.

[0011] The present invention is further configured such that: the positioning part is configured as a perfect circular cone, and its top is transitionally connected to a flat column; the bottom surface of the positioning part is provided with positioning protrusions for aligning with the connecting part of the friction block connector.

[0012] The present invention is further configured such that: the bottom surface of the sleeve is symmetrically provided with a platform for assembly and positioning.

[0013] The present invention is further configured such that a metal washer is provided between the compression spring and the filler.

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

[0015] 1. Compared to existing technologies, this utility model's snap ring assembly fixture effectively improves the stability and ease of operation of the assembly process by setting an integrally formed pressure bracket at the top of the sleeve. The pressure bracket design provides better support for the snap ring during assembly, preventing it from moving or tilting and ensuring assembly accuracy. Simultaneously, the fixing rod at the bottom of the sleeve stably fixes the snap ring in a preset position, avoiding instability or misalignment during installation. Utilizing the pre-compression effect of the compression spring, the pre-pressure of the snap ring can be adjusted as needed, ensuring the fixing force and stability of the snap ring during assembly and improving the assembly success rate. The overall structural design not only improves the precision of the fixture but also reduces the labor intensity of the operators.

[0016] 2. The snap ring assembly fixture of this utility model enhances the stability of the fixing rod by setting a limiting component. In traditional snap ring assembly tools, the fixing rod does not have a reasonable positioning or limiting device, and it is easy to fall or rotate, thereby affecting the assembly accuracy and operational safety of the snap ring. By setting a limiting component, this invention effectively avoids this problem, restricting the movement range of the fixing rod in the sleeve and keeping it firmly in the predetermined position, thereby improving the assembly accuracy and reliability of the assembly process.

[0017] 3. In this utility model, a metal washer is set as a buffer layer between the compression spring and the filler, which effectively improves the stability and durability of the snap ring assembly fixture; the metal washer plays a role in shock absorption and buffering between the compression spring and the filler, which can effectively absorb the impact force and pressure changes during the assembly process, avoid direct friction between the compression spring and the filler, reduce wear, and extend the service life of the fixture.

[0018] 4. By symmetrically setting the columns on the bottom of the sleeve, it is possible to prevent excessive compressive force applied during the assembly process from causing unnecessary damage to the retaining ring. In addition, the flat column design provides a smooth connection method, making the connection between the fixing part and the positioning part more stable and less prone to loosening. At the same time, during pre-assembly, the retaining ring opening is inserted through the flat column, and then rotated to lock into place at the positioning part. This structure makes it easier to place the retaining ring during pre-assembly without requiring much force.

[0019] 5. This utility model has a simple and reasonable structure, is easy to manufacture and operate, avoids the defects of the prior art, and is suitable for promotion and application. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the snap ring assembly tooling of this utility model.

[0021] Figure 2 This is a structural diagram of the fixing rod in the snap ring assembly fixture of this utility model.

[0022] Figure 1-2 Reference numerals: 1. Sleeve; 2. Pressure support; 3. Fixing rod; 4. Compression spring; 5. Filler; 6. Flat head screw; 7. Limiting component; 8. Fixing part; 9. Positioning part; 10. Flat column; 11. Positioning protrusion; 12. Column; 13. Metal washer. Detailed Implementation

[0023] Reference Figure 1-2 The embodiments of the snap ring assembly tooling of this utility model are further described below.

[0024] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0025] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0026] Figures 1 to 2 The illustrated retaining ring assembly fixture includes a sleeve 1, an integrally formed pressure bracket 2 at the top of the sleeve 1, a fixing rod 3 penetrating the sleeve 1 and used for pre-installing the retaining ring at the bottom of the sleeve 1, a compression spring 4 for pre-tightening and positioning located above the fixing rod 3 located inside the sleeve 1, a filler 5 for adjusting the pre-tightening force located above the compression spring 4 located inside the sleeve 1, and a flat-head screw 6 fixedly connected to the sleeve 1 and used to fix the filler 5 located inside the pressure bracket 2; the pre-tightening force can be adjusted by loosening the flat-head screw 6 and adjusting the amount of filler 5.

[0027] By incorporating an integrally formed pressure bracket 2 at the top of sleeve 1, the stability and ease of operation of the assembly process are effectively improved. The design of the pressure bracket 2 provides better support for the retaining spring during assembly, preventing it from shifting or tilting and ensuring assembly accuracy. Simultaneously, the fixing rod 3 at the bottom of sleeve 1 stably fixes the retaining spring in a preset position, preventing instability or misalignment during installation. The pre-compression effect of the compression spring 4 allows for adjustment of the retaining spring's preload as needed, ensuring the retaining spring's fixing force and stability during assembly and improving the assembly success rate. The overall structural design not only improves the precision of the tooling but also reduces the labor intensity of operators. This type of retaining spring exhibits minimal deformation during assembly, reducing damage to the retaining spring.

[0028] The sleeve 1 is provided with a limiting member 7 to prevent the fixing rod 3 from falling off and rotating;

[0029] The stability of the fixing rod 3 is enhanced by setting the limiting component 7. In traditional snap ring assembly tools, the fixing rod 3 does not have a reasonable positioning or limiting device, and it is easy to fall or rotate, thereby affecting the assembly accuracy and operational safety of the snap ring. By setting the limiting component 7, the present invention effectively avoids this problem, so that the movement range of the fixing rod 3 in the sleeve 1 is limited, and it can be firmly held in the predetermined position, thereby improving the assembly accuracy and the reliability of the assembly process.

[0030] The fixing rod 3 includes a fixing part 8 located inside the sleeve 1, a positioning part 9 located outside the sleeve 1, and a flat column 10 located outside the sleeve 1 for connecting the fixing part 8 and the positioning part 9; the fixing part 8 is provided with a limiting part for cooperating with the limiting member 7 to form a limiting position; wherein, the bottom diameter of the positioning part 9 is equal to the diameter of the connecting part of the friction block connector, and during the assembly process, the snap ring is pushed by the sleeve 1 and smoothly inserted into the connecting part of the friction block connector by the positioning part 9, thus avoiding the large deformation of the snap ring in the prior art;

[0031] This invention makes the snap ring assembly fixture more precise and reliable during snap ring pre-assembly and positioning. The fixing part 8 is located inside the sleeve 1, ensuring that the snap ring remains in the correct position throughout the assembly process and will not shift due to external interference. The positioning part 9 plays a precise positioning role, ensuring the correct placement of the snap ring and enabling the assembled snap ring to work stably. The design of the flat post 10 provides a smooth connection method, making the connection between the fixing part 8 and the positioning part 9 more stable and less prone to loosening. At the same time, during pre-assembly, the snap ring opening is inserted through the flat post 10, and then the snap ring is rotated to the positioning part 9 to lock the snap ring. This structure makes it easier to place the snap ring during pre-assembly without requiring much force. By setting the limiting part and the limiting member 7 to cooperate, the movement of the fixing part 8 can be prevented, ensuring the stability and precision of the entire assembly process.

[0032] The positioning part 9 is configured as a perfect circular cone, and its top is transitionally connected to the flat column 10; the bottom surface of the positioning part 9 is provided with positioning protrusions 11 for aligning with the connecting part of the friction block connector;

[0033] It provides a better mating effect during snap ring assembly. The top transition connection design makes snap ring pre-assembly smoother, reduces friction during assembly, thereby reducing wear between the snap ring and the assembly tooling and extending service life; at the same time, the positioning protrusions 11 on the bottom surface can effectively align with the connecting part of the friction block connector, ensuring that the snap ring is in the correct angle and position during assembly, further improving the accuracy and efficiency of assembly.

[0034] The bottom surface of the sleeve 1 is symmetrically provided with a platform 12 for assembly and positioning;

[0035] The symmetrically arranged columns 12 prevent excessive compressive force during assembly from causing unnecessary damage to the retaining ring. Simultaneously, the design of the columns 12 makes the tooling structure more compact and stable, maintaining good adaptability in different operating environments. Operators can more easily complete the assembly of the retaining ring, improving production efficiency and reducing operational errors.

[0036] A metal washer 13 is provided between the compression spring 4 and the filler 5;

[0037] The metal washer 13 is set as a buffer layer between the compression spring 4 and the filler 5, which effectively improves the stability and durability of the snap ring assembly fixture. The metal washer 13 plays a role in shock absorption and buffering between the compression spring 4 and the filler 5, which can effectively absorb the impact force and pressure changes during the assembly process, avoid direct friction between the compression spring 4 and the filler 5, reduce wear, and extend the service life of the fixture.

[0038] Working principle: The operator pre-installs the snap ring onto the fixed rod 3 via the flat post 10, then aligns the positioning protrusion 11 of the fixed rod 3 with the connecting part of the friction block connector, and then presses down the snap ring assembly fixture. The fixed rod 3 retracts into the receiving space of the sleeve 1. The compression spring 4 inside the sleeve 1 is compressed and acts on the fixed rod 3 to perform positioning and pre-tightening positioning. At the same time, the sleeve 1 pushes the snap ring downward until the snap ring is assembled into the connecting part of the friction block connector.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A clamp spring assembly tool comprising a sleeve (1), characterised in that, The top of the sleeve (1) is provided with an integrally formed pressure bracket (2). The bottom of the sleeve (1) is provided with a fixing rod (3) that penetrates the sleeve (1) and is used for pre-installing a snap ring. The sleeve (1) is provided with a compression spring (4) for pre-tightening and positioning above the fixing rod (3). The sleeve (1) is provided with a filler (5) for adjusting the pre-tightening force above the compression spring (4). The pressure bracket (2) is provided with a flat-head screw (6) that is fixedly connected to the sleeve (1) and is used to fix the filler (5).

2. The snap ring assembly fixture according to claim 1, characterized in that, The sleeve (1) is provided with a limiting member (7) to prevent the fixing rod (3) from falling off and rotating.

3. A snap ring assembly fixture according to claim 1 or 2, characterized in that, The fixing rod (3) includes a fixing part (8) located inside the sleeve (1), a positioning part (9) located outside the sleeve (1), and a flat post (10) located outside the sleeve (1) for connecting the fixing part (8) and the positioning part (9); the fixing part (8) is provided with a limiting part for cooperating with the limiting member (7) to form a limiting position.

4. The snap ring assembly fixture according to claim 3, characterized in that, The positioning part (9) is configured as a perfect circular cone, and its top is transitionally connected to the flat column (10); the bottom surface of the positioning part (9) is provided with positioning protrusions (11) for aligning with the connecting part of the friction block connector.

5. A snap ring assembly fixture according to claim 1, characterized in that, The bottom surface of the sleeve (1) is symmetrically provided with a platform (12) for assembly and positioning.

6. A snap ring assembly fixture according to claim 1, characterized in that, A metal washer (13) is provided between the compression spring (4) and the filler (5).

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