A planetary disc assembly component press-fitting jig

Abstract

The utility model relates to a kind of parts press-fitting jigs of planetary disc assembly, including base, the inside of the base is provided with support piece, the inside of the support piece is provided with the guide shaft that one end penetrates and extends to its outside, and guide shaft is used to limit sun gear and planetary disc position.The parts press-fitting jig of planetary disc assembly, utilize guide shaft and provide initial positioning for both by the clearance cooperation with sun gear inner hole, planetary disc inner hole, limit its radial movement;Pin shaft hole on positioning plate is adapted with planetary pin shaft, ensure that planetary pin shaft is placed according to predetermined position, gasket in support piece is matched with the pit of positioning plate by boss, support positioning plate, while gasket and base clearance cooperation, allow within a certain range to move up and down, when external pressure acts on planetary disc assembly, guide shaft moves downward with pressure, compresses telescopic spring in chamber, after press-fitting is completed, telescopic spring resets, guide shaft is pushed to move upward, it is convenient to disassemble the component after press-fitting.

Description

Technical Field

[0001] This utility model relates to the field of planetary disk assembly processing technology, specifically to a component pressing fixture for a planetary disk assembly. Background Technology

[0002] Planetary gear drives are widely used in various mechanical products. Planetary gear drives include components such as sun gears, planet gears, planetary disks, planet gear shafts, and internal gear rings. Planetary disks usually require the pressing of one sun gear and three or more planetary pins. During pressing, the sun gear, planetary pins, and the end face of the planetary disk must be perpendicular to a certain degree to avoid tilting of the sun gear and planetary pins during the pressing process, and to ensure that the final pressed planetary disk assembly meets the design requirements.

[0003] Currently, in some miniature products, miniature planetary disks are required, especially multi-stage planetary disks. Due to the small size of the parts, it is inconvenient to process the planetary pins and planetary disks together, and it is difficult to achieve the required precision in the processing technology. Therefore, most of them process the planetary disks and planetary pins separately, and then press the planetary pins onto the planetary disks. However, the existing sun gear assembly method is generally heat-fitting, and the planetary pin assembly method is generally heat-fitting or press-fitting of individual planetary pins. There are many parts that need to be press-fitted, and manual press-fitting is slow and inefficient. Therefore, a component press-fitting fixture for planetary disk assemblies is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a component pressing fixture for planetary disk assemblies, which has the advantage of rapid pressing and solves the problems of existing sun gear assembly methods, which are generally heat-fitting, and planetary pin assembly methods, which are generally heat-fitting or pressing of individual planetary pins, requiring pressing of many components, and resulting in slow manual pressing speed and low efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a component pressing fixture for a planetary disk assembly, including a base, wherein a support member is provided inside the base;

[0006] The support has a guide shaft inside that extends through to the outside and is used to limit the position of the sun gear and planetary disk. The top of the support is equipped with a positioning plate for placing the planetary pin.

[0007] Furthermore, the support includes a pad installed inside the base, and the pad is used to support the positioning plate. The pad is provided with a telescopic spring for supporting the guide shaft.

[0008] Furthermore, the pad has a cavity inside, and a telescopic spring is installed inside the cavity. The end of the guide shaft extends into the cavity and is slidably connected to the pad. One end of the pad has a boss, and the base and the pad are fitted with a clearance.

[0009] Furthermore, the positioning plate has a recess inside that matches the boss, and the positioning plate also has a through hole and several pin holes, and the pin holes match the planetary pins. The positioning plate and the base are in clearance fit, and the positioning plate and the pad are in transition fit.

[0010] Furthermore, the through hole on the positioning plate and the cavity center on the pad are coaxial.

[0011] Furthermore, the number of the pin holes and planetary pins is the same and is at least three.

[0012] Furthermore, the head of the guide shaft is clearance-fitted with the inner hole of the sun gear, and the middle section of the guide shaft is clearance-fitted with the inner hole of the planetary disk.

[0013] Furthermore, the top of the telescopic spring contacts the end of the guide shaft, and the bottom of the telescopic spring contacts the inner bottom wall of the base.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The component pressing fixture for this planetary disk assembly uses a guide shaft that provides initial positioning for both the sun gear's inner hole and the planetary disk's inner hole through a clearance fit, restricting their radial movement. The pin holes on the positioning plate are adapted to the planetary pins, ensuring that the planetary pins are placed in the predetermined positions. The pads in the support components support the positioning plate through a boss that engages with the recesses on the positioning plate. At the same time, the pads have a clearance fit with the base, allowing for a certain range of vertical movement. When external pressure is applied to the planetary disk assembly, the guide shaft moves downward with the pressure, compressing the telescopic spring in the compression chamber. After pressing is completed and the external pressure is removed, the telescopic spring returns to its original position, pushing the guide shaft upward, facilitating the disassembly of the pressed assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the assembly of the planetary disk, sun gear, and guide shaft of this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the present utility model. Figure 2 Reverse exploded view;

[0019] Figure 4 This is a schematic diagram of the structure of the present utility model. Figure 2 Exploded view in the forward direction;

[0020] Figure 5 This is a schematic diagram of the structure of the present utility model. Figure 2 A sectional view;

[0021] Figure 6 This is a schematic diagram of the structural positioning plate and planetary pin shaft of this utility model;

[0022] Figure 7 This is a schematic diagram of the assembled planetary pin, sun gear, and planetary disk of this utility model.

[0023] In the diagram: 1. Base; 2. Support component; 21. Pad; 22. Telescopic spring; 23. Chamber; 24. Boss; 3. Guide shaft; 4. Positioning plate; 41. Recess; 42. Through hole; 43. Pin hole; 5. Sun gear; 6. Planetary disk; 7. Planetary pin. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figure 1-7 In this embodiment, a component pressing fixture for a planetary disk assembly includes a base 1, and a support member 2 is provided inside the base 1.

[0026] The support member 2 has a guide shaft 3 that extends through one end and outwards. The head of the guide shaft 3 is in clearance fit with the inner hole of the sun gear 5, and the middle section of the guide shaft 3 is in clearance fit with the inner hole of the planetary disk 6. The guide shaft 3 is used to limit the position of the sun gear 5 and the planetary disk 6. The guide shaft 3 provides initial positioning for the sun gear 5 and the planetary disk 6 by clearance fit with the inner hole of the sun gear 5 and the inner hole of the planetary disk 6, and limits their radial movement. The top of the support member 2 is equipped with a positioning plate 4 for placing the planetary pin 7.

[0027] The support component 2 includes a pad 21 installed inside the base 1, which supports the positioning plate 4. The pad 21 is equipped with a telescopic spring 22 for supporting the guide shaft 3. The top of the telescopic spring 22 contacts the end of the guide shaft 3, and the bottom of the telescopic spring 22 contacts the inner bottom wall of the base 1. When external pressure is applied to the planetary disk 6 assembly, the guide shaft 3 moves downward with the pressure. The telescopic spring 22 in the compression chamber 23 has a buffering effect to prevent the pressing force from directly impacting the parts and preventing deformation or damage. After pressing is completed, the external pressure is removed, the telescopic spring 22 returns to its original position, and pushes the guide shaft 3 upward to facilitate the disassembly of the pressed assembly.

[0028] In addition, the pad 21 has a cavity 23 inside, and the telescopic spring 22 is installed inside the cavity 23. The end of the guide shaft 3 passes through the cavity 23 and is slidably connected to the pad 21. The shaft head of the guide shaft 3 is fitted with the inner hole of the sun gear 5 and the intermediate shaft section is fitted with the inner hole of the planetary disk 6. During press fitting, a small adjustment is allowed to ensure the coaxiality of each component and limit the offset. One end of the pad 21 is provided with a boss 24, and the base 1 and the pad 21 are fitted with a clearance.

[0029] It should be noted that the positioning plate 4 has a recess 41 inside that matches the boss 24. The pad 21 in the support member 2 cooperates with the recess 41 of the positioning plate 4 through the boss 24 to support the positioning plate 4. At the same time, the pad 21 is clearance-fitted with the base 1, allowing up and down movement within a certain range. The positioning plate 4 is also provided with a through hole 42 and several pin holes 43, and the pin holes 43 are adapted to the planetary pins 7. The pin holes 43 on the positioning plate 4 are adapted to the planetary pins 7 to ensure that the planetary pins 7 are placed in the predetermined position. The positioning plate 4 and the base 1 are clearance-fitted, and the positioning plate 4 and the pad 21 are transition-fitted. The through hole 42 on the positioning plate 4 and the cavity 23 on the pad 21 are coaxial. The number of pin holes 43 and the number of planetary pins 7 are the same and at least three.

[0030] Using the above technical solution, the planetary disk 6 is placed on the positioning plate 4, with the inner hole of the planetary disk 6 and the intermediate shaft section of the guide shaft 3 having a clearance fit. Then, the sun gear 5 is placed on top of the planetary disk 6, with the inner hole of the sun gear 5 aligned with the guide shaft 3. Then, the first pressing is performed, inserting three planetary pins 7 into the three pin holes 43 opened on the positioning plate 4. Then, the planetary disk 6 and sun gear 5 assembly is placed on the pin holes 43, and the pin holes 43 are aligned with the inner hole of the planetary disk 6. Then, pressing is performed, thereby applying pressure to the guide shaft 3 and compressing the telescopic spring 22, thus completing the pressing operation of the planetary pins 7.

[0031] The working principle of the above embodiments is as follows:

[0032] When using the component pressing fixture for the planetary disk assembly, the planetary disk 6 is placed on the positioning plate 4, with the inner hole of the planetary disk 6 and the intermediate shaft section of the guide shaft 3 having a clearance fit. Then, the sun gear 5 is placed on top of the planetary disk 6, with the inner hole of the sun gear 5 aligned with the guide shaft 3. Then, the first pressing is performed, thereby completing the pressing of the sun gear 5.

[0033] Insert the three planetary pins 7 into the three pin holes 43 opened on the positioning plate 4, then place the planetary disk 6 and sun gear 5 assembly on the pin holes 43, align the pin holes 43 with the inner hole of the planetary disk 6, and then press them in, thereby applying pressure to the guide shaft 3 and compressing the telescopic spring 22, thus completing the press-fitting operation of the planetary pins 7.

[0034] After pressing, the entire planetary disk assembly is lifted using the telescopic spring 22, making it easier for workers to remove the planetary disk assembly.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A component pressing fixture for a planetary disk assembly, comprising a base (1), characterized in that: The base (1) is provided with a support member (2) inside; The support member (2) has a guide shaft (3) that extends through one end and outwards, and the guide shaft (3) is used to limit the position of the sun gear and the planetary disk. The top of the support member (2) is equipped with a positioning plate (4) for placing the planetary pin.

2. The component pressing fixture for a planetary disk assembly according to claim 1, characterized in that: The support member (2) includes a pad (21) installed inside the base (1), and the pad (21) is used to support the positioning plate (4). The pad (21) is provided with a telescopic spring (22) for supporting the guide shaft (3).

3. The component pressing fixture for a planetary disk assembly according to claim 2, characterized in that: The pad (21) has a cavity (23) inside, and the telescopic spring (22) is installed inside the cavity (23). The end of the guide shaft (3) extends into the cavity (23), and the guide shaft (3) is slidably connected to the pad (21). One end of the pad (21) is provided with a boss (24), and the base (1) and the pad (21) are fitted with a clearance.

4. The component pressing fixture for a planetary disk assembly according to claim 3, characterized in that: The positioning plate (4) has a recess (41) that matches the boss (24) inside. The positioning plate (4) also has a through hole (42) and several pin holes (43), and the pin holes (43) match the planetary pins. The positioning plate (4) and the base (1) are in clearance fit, and the positioning plate (4) and the pad (21) are in transition fit.

5. The component pressing fixture for a planetary disk assembly according to claim 4, characterized in that: The through hole (42) on the positioning plate (4) and the cavity (23) on the pad (21) are coaxial.

6. The component pressing fixture for a planetary disk assembly according to claim 4, characterized in that: The number of pin holes (43) and planetary pins is the same and at least three.

7. The component pressing fixture for a planetary disk assembly according to claim 1, characterized in that: The shaft head of the guide shaft (3) is in clearance fit with the inner hole of the sun gear, and the middle shaft section of the guide shaft (3) is in clearance fit with the inner hole of the planetary disk.

8. The component pressing fixture for a planetary disk assembly according to claim 2, characterized in that: The top of the telescopic spring (22) contacts the end of the guide shaft (3), and the bottom of the telescopic spring (22) contacts the inner bottom wall of the base (1).

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