A female axle fork plug press fitting device

Abstract

The utility model discloses a kind of female axle fork plug press-fitting device, including base, positioning tool, limit post, top plate, pressure head, linear flange bearing, spring, magnet and sliding rod;Top plate and base are connected by limit post to form stable structure, linear flange bearing ensures the high-precision axial movement of sliding rod and pressure head;Pressure head front end is equipped with magnet, can adsorb plug and in the press-fitting process self-adapting positioning;Device controls press-fitting precision on middle piece structure, equipment only provides axial force, so that plug can be smoothly pressed into without relying on equipment coaxiality, avoid cutting silk, burr and other problems;The device is suitable for high-precision press-fitting of different models of female axle fork plug, with the advantages of general structure, tool quick change and stable press-fitting quality.

Description

Technical Field

[0001] This utility model belongs to the field of shaft fork cavity sealing, specifically relating to a female shaft fork plug pressing device. Background Technology

[0002] As a core component of the constant velocity drive shaft moving joint, the female shaft fork requires its inner cavity to be sealed with a plug to prevent lubricating oil leakage and foreign object intrusion. Current female shaft fork plug pressing relies primarily on the coaxiality accuracy of the pressing equipment to ensure the fit quality between the plug and the inner hole. In conventional processes, after the female shaft fork is positioned using specialized tooling, the upper pressure head of the pressing equipment directly applies force to press the plug in. However, when the equipment's coaxiality error is large or the plug structure has a small or even no chamfer, the pressing process is prone to problems such as plug eccentricity, burrs, and poor sealing, leading to product assembly defects and scrap, and affecting the dynamic balance and lifespan of the drive shaft.

[0003] The existing solution has the following main shortcomings:

[0004] High dependence on equipment precision: coaxiality error directly affects the pressing quality, resulting in long equipment calibration cycles and high cost of maintaining precision;

[0005] Poor press-fit stability: Uneven force on the end face of the plug makes it prone to tilting or deformation;

[0006] Poor tooling versatility: Different specifications of female shaft forks require customized matching tooling, making replacement complicated;

[0007] Poor quality consistency: Manual alignment or low-precision equipment pressing can easily cause batch deviations. Utility Model Content

[0008] This invention provides a female shaft fork plug pressing device that does not rely on the coaxiality of the equipment under the original standard process flow. As an intermediate component connecting the equipment and tooling, it transfers the coaxiality accuracy requirements of the equipment to the intermediate device, thereby better controlling or adjusting the pressing process and completing the female shaft fork plug pressing with high quality.

[0009] This utility model provides a female shaft fork plug pressing device, including a base, a limiting post, a top plate, and a sliding rod;

[0010] The base and top plate are connected by limiting posts, and the space between the base and top plate is used to accommodate the target workpiece;

[0011] The base is used to support and position the target workpiece. A sliding rod is provided above the base. A sliding pair is formed between the sliding rod and the top plate. The sliding rod is used to press the end cap to be installed onto the target workpiece.

[0012] Positioning holes are provided on both the base and the top plate, and the positioning holes and the sliding rod are coaxially arranged so that the sliding rod and the target workpiece being positioned are coaxial.

[0013] The technical solution provided in this application also has the following technical features:

[0014] Preferably, in one embodiment of this application, the positioning holes of the base and the top plate are obtained by drilling a center hole after the base and the top plate are integrally fixed.

[0015] Preferably, in one embodiment of this application, four limiting posts are provided between the base and the top plate, and the base and the top plate are arranged in parallel.

[0016] Preferably, in one embodiment of this application, the top plate is provided with slopes on both sides, so that the base, limiting post and top plate are integrally fixed in a convex shape.

[0017] Preferably, in one embodiment of this application, the positioning hole of the base is provided with a positioning fixture, which is used to match the shaft end of the target workpiece so that the target workpiece and the sliding rod are coaxially arranged.

[0018] Preferably, in one embodiment of this application, a linear flange bearing is provided on the positioning hole of the top plate, and the linear flange bearing is used to limit the sliding rod; the sliding rod is equipped with a spring so that the sliding rod returns to its original position after being pressed down.

[0019] Preferably, in one embodiment of this application, a pressure head is provided below the sliding rod, and the pressure head is used to abut against the end cap.

[0020] Preferably, in one embodiment of this application, the pressure head is equipped with a magnet, which is used to attract the end cap.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0022] To address the problems of high equipment coaxiality, leading to cap misalignment, wire cutting, and poor sealing during the existing female shaft fork cap pressing process, this application adopts a highly coaxial positioning structure formed by integrally molding the base, limiting post, and top plate with a central hole drilled simultaneously. Combined with a sliding rod, linear flange bearing, spring, and magnetically attracted pressure head structure, this constitutes a self-calibrating and self-resetting pressing mechanism. This overcomes the dependence on equipment coaxiality and manual alignment errors, achieving high-precision, self-adaptive pressing of the cap. The technical solution of this application achieves the following technological advancements:

[0023] 1. Coaxiality self-calibration: Through the structure of drilling holes in the base and top plate, the sliding rod, positioning fixture and target workpiece are automatically kept coaxial, which significantly reduces the impact of equipment coaxiality error and improves press-fit consistency;

[0024] 2. Self-resetting structure: A spring reset mechanism is set up so that the pressure head automatically returns to its original position after pressing, which improves work efficiency and extends the service life of the device;

[0025] 3. Self-adsorption and part removal: The pressure head is equipped with a magnet, which can adsorb the plug and achieve self-positioning during the pressing process, simplifying the feeding operation and preventing the plug from being eccentric;

[0026] 4. Modular versatility: The quick-change positioning tooling design adapts to different specifications of female shaft forks, reducing tooling change time and improving production flexibility;

[0027] 5. Improved press-fitting stability: The four-limit column parallel structure and linear flange bearing limit design ensure vertical parallelism and sliding accuracy, avoiding quality defects caused by cap tilting or uneven force.

[0028] In summary, this application, through integrated structural processing and a self-aligning sliding mechanism, transfers the control of pressing accuracy from the equipment to the device itself, significantly improving the stability, reliability, and versatility of cap pressing. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is a perspective view of a female shaft fork plug pressing device according to the present invention;

[0031] Figure 2 This is a cross-sectional view of a female shaft fork plug pressing device according to the present invention;

[0032] Figure 3 This is a diagram illustrating the pressing process of a female shaft fork plug pressing device according to the present invention;

[0033] Components in the diagram:

[0034] 1. Base

[0035] 2. Positioning fixture

[0036] 3. Limiting post

[0037] 4. Top slab

[0038] 5. Pressure head

[0039] 6. Linear flange bearings

[0040] 7. Spring

[0041] 51. Magnet

[0042] 8. Female axle fork

[0043] 9. End caps

[0044] 10. Sliding rod. Detailed Implementation

[0045] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings. These embodiments are only for illustrating this application and are not intended to limit the scope of this utility model.

[0046] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are 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, and therefore should not be construed as a limitation of 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.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0048] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0049] like Figures 1-3 A female shaft fork plug pressing device includes a base 1, a limiting post 3, a top plate 4, and a sliding rod 10;

[0050] The base 1 and the top plate 4 are connected by a limiting post 3, and the space between the base 1 and the top plate 4 is used to accommodate the target workpiece;

[0051] The base 1 is used to support and position the target workpiece. A sliding rod 10 is provided above the base 1. A sliding pair is formed between the sliding rod 10 and the top plate 4. The sliding rod 10 is used to press the end cap 9 to be installed onto the target workpiece.

[0052] Both the base 1 and the top plate 4 are provided with positioning holes, and the positioning holes and the sliding rod 10 are coaxially arranged so that the sliding rod 10 and the positioning target workpiece are coaxial.

[0053] This application transfers the control of pressing accuracy to the internal structure of the device through structural self-alignment and mechanical compensation design, and utilizes the sliding rod 10 to achieve high-precision adaptive pressing.

[0054] The key points of implementation in this application are as follows: High-precision, self-adaptive press-fitting of the female shaft fork plug is achieved through integrated structure, sliding guidance, and elastic reset design. The base 1 and top plate 4 are connected by four equal-height limiting posts 3 to form a rigid frame. After both are fixed, a central hole is drilled simultaneously to ensure the coaxiality of the sliding rod 10 and the tooling positioning hole of the base 1. A linear flange bearing 6 is installed on the top plate 4 to limit the axial movement accuracy of the sliding rod 10. The lower end of the sliding rod 10 is connected to a pressure head 5, with a magnet 51 embedded in the pressure head for adsorbing the end cap 9. A spring 7 is installed on the outside of the sliding rod 10 to achieve automatic reset after the sliding rod 10 is pressed down.

[0055] The working principle or process of this application is as follows: Figure 3 In use, the base 1 is fixed to the worktable of the pressing equipment through the interface, and the positioning fixture 2 is placed in the positioning hole of the base to support and accurately position the end of the female shaft fork 8. The operator attaches the plug 9 to the pressing head 5 through the magnet 51, starts the press or operates manually, and applies downward pressure to push the sliding rod 10 to slide axially along the linear flange bearing 6, so that the plug 9 and the inner hole of the female shaft fork are automatically coaxially aligned and the pressing is completed. After the pressing is completed, the sliding rod is reset under the action of the spring 7, the pressing head 5 leaves the workpiece, and one cycle is completed.

[0056] During this process, the coaxial positioning structure and self-guiding sliding pair of the device ensure the accuracy of the pressing direction; the magnetic attraction and spring reset mechanism simplify the operation process; at the same time, the coaxiality constraint of the device's own structure effectively eliminates the influence of the coaxiality error of the equipment itself.

[0057] This application achieves precise alignment, stable pressing, and automatic reset of the female shaft fork plug by combining a rigid frame, sliding guide, elastic reset, and magnetic assistance. It has a compact structure, is easy to operate, and can effectively avoid problems such as plug misalignment, wire cutting, and poor sealing. It significantly improves pressing accuracy and batch assembly consistency, and has high promotion value and versatility.

[0058] Specifically, in one embodiment of this application, such as Figure 1 , Figure 2 The positioning holes of the base 1 and the top plate 4 are obtained by drilling a center hole after the base 1 and the top plate 4 are fixed together. Four limiting posts 3 are set between the base 1 and the top plate 4, and the base 1 and the top plate 4 are set in parallel. The two sides of the top plate 4 are provided with slopes so that the base 1, the limiting posts 3 and the top plate 4 are convex after being fixed together. The positioning holes of the base 1 are equipped with positioning fixtures 2, which are used to match the shaft end of the target workpiece so that the target workpiece and the sliding rod 10 are set coaxially. The positioning holes of the top plate 4 are provided with linear flange bearings 6, which are used to limit the sliding rod 10. The sliding rod 10 is equipped with springs 7 so that the sliding rod 10 returns to its original position after being pressed down.

[0059] To address the issues of large coaxiality errors, easy eccentricity of the plug, wire cutting, and poor sealing during the press-fitting of the female shaft fork plug, a structural feature is adopted where the base 1 and top plate 4 are drilled together in a single process after assembly to form a natural coaxial positioning reference. This is combined with a parallel support structure with four limit posts 3 connected at equal heights, and a combination design of a linear flange bearing 6 for guidance and a spring 7 for reset. Structurally, this achieves collinearity and motion accuracy between the sliding rod 10 and the positioning fixture 2, overcoming the cumulative errors and unstable guidance caused by traditional split-piece tooling processing. This results in high press-fitting accuracy. The technical effect is smooth operation and reliable reset. During implementation, the drilling concentricity error of the top plate 4 and the base 1 after fixing should not exceed 0.03mm, and an interference fit should be used when assembling the linear flange bearing 6 to prevent loosening. The preload of the spring 7 is determined according to the size and material of the plug 9 to ensure rapid reset and avoid rebound impact. In addition, the linear flange bearing 6 can be replaced by a linear sliding bushing or a precision guide sleeve, and the spring 7 can also be replaced by a gas spring or a disc spring assembly to ensure that the device has a simple structure, is easy to manufacture and has replaceability.

[0060] Specifically, in one embodiment of this application, such as Figure 1 , Figure 2 A pressure head 5 is provided below the sliding rod 10. The pressure head 5 is used to abut the end cover 9. A magnet 51 is provided with the pressure head 5. The magnet 51 is used to attract the end cover 9.

[0061] To address the issues of misalignment, unstable sliding, and difficulty in feeding during the pressing process of the female shaft fork plug, a structural feature is adopted where a pressing head 5 is located below the sliding rod 10 and equipped with a magnet 51. This allows the pressing head 5 to contact and stabilize the end cap 9 during pressing, while the magnet 51 attracts the end cap 9 to achieve self-alignment and convenient feeding. This overcomes the shortcomings of traditional manual alignment, which is prone to misalignment and has low assembly efficiency. The result is a smooth pressing process, accurate plug positioning, simple operation, and high efficiency of cyclical operation. During implementation, it is essential to ensure a tight fit between the pressing head 5 and the sliding rod 10, and that the magnet 51 has a moderate attraction force to prevent the end cap 9 from shifting or tilting before pressing. Alternatively, the magnet 51 can be replaced with an electromagnetic adsorption device or an elastic clamping mechanism to achieve the same stable adsorption and positioning function.

[0062] Specifically, in one embodiment of this application, a female shaft fork plug pressing device is provided that does not rely on the coaxiality of the equipment. During the pressing of the female shaft fork plug, the equipment only applies process force, and the pressing accuracy is controlled by the novel device and tooling, thus eliminating the dependence on the coaxiality requirements of the equipment; for example... Figure 1 The device structure is as follows:

[0063] Base 1 is a device interface component and tooling positioning component; used for connecting standard device interfaces and for the interface of the female shaft fork positioning tooling;

[0064] Positioning fixture 2: Placed inside the device base, used to position the end of the female shaft fork, which is the other end outside the target end of the end cap;

[0065] Limiting column 3: The four columns are designed with equal height to ensure the axial space and accuracy of the device;

[0066] Top plate 4: Upper pressure head and pressure rod connector, used for pressing the carrier;

[0067] Press head 5: Positions and connects the plug, and works together with sliding rod 10 to press the end cap 9;

[0068] Magnet 51, together with pressure head 5, attracts target end cap 9, and during the pressing process of pressure head 5, it adaptively positions itself with the inner hole of female shaft fork.

[0069] Linear flange bearing 6: Ensures axial accuracy and axial movement;

[0070] Spring 7: Ensures the periodic pressing and reset of the sliding rod and pressure head;

[0071] The top plate 4 and the base 1 are connected by four equal-height limiting columns to ensure axial space and parallelism of the upper and lower plates;

[0072] A central hole is drilled between the top plate 1 and the base 4 to ensure the coaxiality of the entire device, and the axial movement of the sliding rod 10 and the pressure head 5 is ensured by using the linear flange bearing 6 as a transition part.

[0073] The shaft holes of the linear flange bearing 6 and the sliding rod 10 in the top plate 4 and the positioning fixture 2 on the base 1 are obtained by clamping and machining on the same equipment, and the coaxiality error is consistent and the precision is high.

[0074] This application enables a novel female shaft fork plug pressing device that does not rely on the coaxiality of the equipment; the equipment only needs to apply force and does not require precision control.

[0075] The equipment is convex in shape, which maximizes the usable space for the product and is compatible with all female shaft fork plug pressing.

[0076] The tooling is quick to change; for pressing different structures and types of female shaft fork plugs, only the corresponding tooling needs to be changed.

[0077] Specifically, in one embodiment of this application, an M-type plug is press-fitted onto a female shaft fork as an example; during operation, as... Figure 3 As shown, the entire device is positioned on the base below the equipment, and the female shaft fork is placed with the shank facing down in the positioning fixture. At this time, the female shaft fork is axially positioned and the outer circle of the female shaft fork shank is the machining clamping reference surface; at the same time, the M-type plug is attached to the pressure head with the magnet attached to it according to the direction of the contouring fixture.

[0078] After the above is completed, the press equipment can be started. Because the coaxial accuracy of this device is higher than the machining positioning accuracy of the female shaft fork, the plug can be pressed into the female shaft fork smoothly, and there will be no series of adverse phenomena caused by eccentricity during the process. After the press is completed, the plug is embedded into the inner hole of the female shaft fork due to the interference fit, and the press head of the new device will be reset under the action of the cylindrical compression spring, waiting for the next cycle of press.

[0079] In summary, this utility model aims to solve the problems of high equipment coaxiality and poor quality such as burrs and shavings that easily occur during the pressing process of the female shaft fork plug. It provides a female shaft fork plug pressing device with a reasonable structure that can independently guarantee pressing accuracy. The device transfers the coaxiality accuracy control to the device itself by setting an intermediate connecting mechanism between the equipment and the tooling, thereby decoupling the pressing accuracy from the equipment accuracy and thus stably achieving high-quality pressing of the plug.

[0080] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A female shaft fork plug pressing device, characterized in that, Includes base (1), limiting post (3), top plate (4), and sliding rod (10); The base (1) and the top plate (4) are connected by a limiting post (3), and the space between the base (1) and the top plate (4) is used to accommodate the target workpiece; The base (1) is used to support and position the target workpiece. A sliding rod (10) is provided above the base (1). A sliding pair is formed between the sliding rod (10) and the top plate (4). The sliding rod (10) is used to press the end cap (9) to be installed onto the target workpiece. Positioning holes are provided on the base (1) and the top plate (4), and the positioning holes and the sliding rod (10) are coaxially arranged so that the sliding rod (10) and the positioning target workpiece are coaxial.

2. The female shaft fork plug pressing device as described in claim 1, characterized in that, The positioning holes of the base (1) and the top plate (4) are obtained by drilling the center hole at the same time after the base (1) and the top plate (4) are fixed together.

3. The female shaft fork plug pressing device as described in claim 2, characterized in that, Four limiting posts (3) are set between the base (1) and the top plate (4), and the base (1) and the top plate (4) are set in parallel.

4. The female shaft fork plug pressing device as described in claim 2, characterized in that, The top plate (4) is provided with ramps on both sides so that the base (1), the limiting column (3) and the top plate (4) are fixed together in a convex shape.

5. The female shaft fork plug pressing device as described in claim 2, characterized in that, The positioning hole of the base (1) is equipped with a positioning fixture (2), which is used to match the shaft end of the target workpiece so that the target workpiece and the sliding rod (10) are coaxially set.

6. The female shaft fork plug pressing device as described in claim 5, characterized in that, A linear flange bearing (6) is installed on the positioning hole of the top plate (4). The linear flange bearing (6) is used to limit the sliding rod (10). The sliding rod (10) is equipped with a spring (7) so that the sliding rod (10) returns to its original position after being pressed down.

7. The female shaft fork plug pressing device as described in claim 6, characterized in that, A pressure head (5) is provided below the sliding rod (10), and the pressure head (5) is used to abut the end cap (9).

8. The female shaft fork plug pressing device as described in claim 7, characterized in that, The pressure head (5) is equipped with a magnet (51), which is used to attract the end cap (9).

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