A press-fitting tool

Abstract

This application discloses a press-fitting fixture. The press-fitting fixture is used to install anti-rotation pins onto a main frame. The fixture includes an elastic element, a first limiting element, a second limiting element, and a press-fitting element. The first limiting element is used to assemble onto the main frame and has a first mounting hole. The second limiting element is disposed opposite to the first limiting element in the press-fitting direction. The elastic element is sandwiched between the first and second limiting elements in the press-fitting direction. The second limiting element has a second mounting hole, and the first and second mounting holes correspond to each other in the press-fitting direction. The press-fitting element applies downward pressure along the press-fitting direction to the second limiting element from the side away from the first limiting element, so that the anti-rotation pin located in the first and second mounting holes is installed onto the main frame along the press-fitting direction. Therefore, by separating the first and second limiting elements through the elastic element, the guide length of the anti-rotation pin can be extended, achieving a standard where the perpendicularity of the anti-rotation pin before press-fitting is equivalent to the perpendicularity of the pressed-in anti-rotation pin.

Description

Technical Field

[0001] This application relates to the field of press-fitting technology, and in particular to a press-fitting tooling. Background Technology

[0002] A scroll compressor compresses gas by constantly meshing with a stationary worm gear through the revolution of a moving worm gear, thereby continuously reducing the volume of the compression chamber. During its operation, the moving worm gear tends to rotate around its own axis; if its rotation angle is too large, it will jam with the worm coil of the stationary worm gear.

[0003] To prevent the worm gear from rotating on its own, the existing technology directly places the anti-rotation pin in the anti-rotation pin hole of the main frame, fits the limiting fixture into the anti-rotation pin, adjusts the installation position of the pressure head, and presses the anti-rotation pins into the main frame one by one. The height of the anti-rotation pin pressing fixture is designed only according to the working height of the anti-rotation pin, which greatly reduces the guiding function of the anti-rotation pin pressing fixture and cannot guarantee the verticality after pressing. Utility Model Content

[0004] The main objective of this application is to provide a press-fitting tooling that addresses the aforementioned technical problems existing in the prior art.

[0005] To address the aforementioned problems, this application provides a press-fitting fixture for installing anti-rotation pins onto a main frame. The press-fitting fixture includes an elastic element, a first limiting element, a second limiting element, and a press-fitting element. The first limiting element is used to assemble onto the main frame and has a first mounting hole. The second limiting element is disposed opposite to the first limiting element in the press-fitting direction. The elastic element is sandwiched between the first and second limiting elements in the press-fitting direction. The second limiting element has a second mounting hole, and the first and second mounting holes correspond to each other in the press-fitting direction. The press-fitting element applies downward pressure along the press-fitting direction from the side of the second limiting element away from the first limiting element, so that the anti-rotation pin located in the first and second mounting holes is installed onto the main frame along the press-fitting direction.

[0006] In some embodiments, the first limiting member is provided with a first positioning part, and the first limiting member and the main frame are positioned by the first positioning part and the second positioning part on the pressing fixture.

[0007] In some embodiments, the first limiting member includes a first annular portion and an outward protrusion, the first annular portion being disposed about the pressing direction, the outward protrusion being connected to the outside of the first annular portion and extending in a direction away from the first annular portion, the first mounting hole being located in the first annular portion, and the first positioning portion being located in the outward protrusion.

[0008] In some embodiments, the first limiting member is provided with a guide hole, the second limiting member is provided with a guide post, the guide post and the guide hole extend along the pressing direction, and the guide post is at least partially located in the guide hole.

[0009] In some embodiments, the first limiting member further includes a guide portion disposed on the inner sidewall of the guide hole, the guide post having a guide groove extending along the pressing direction, and the guide portion being located within the guide groove.

[0010] In some embodiments, the elastic element is annular and surrounds the outer periphery of the guide post.

[0011] In some embodiments, the first limiting member is provided with a first receiving groove, and the elastic member is partially disposed in the first receiving groove;

[0012] And / or, the second limiting member is provided with a second receiving groove, and the elastic member portion is disposed in the second receiving groove.

[0013] In some embodiments, the first limiting member includes a first annular portion, the first mounting hole is located in the first annular portion, the second limiting member includes a second annular portion, the second mounting hole is located in the second annular portion, and the first annular portion and the second annular portion are spaced apart in the pressing direction.

[0014] In some embodiments, the pressing component includes a pressure plate and a pressure head. The pressure plate is disposed on the side of the second limiting member opposite to the first limiting member. The pressure plate covers the second assembly hole. The pressure head is used to press the pressure plate from the side of the pressure plate opposite to the second limiting member.

[0015] To address the aforementioned issues, this application provides a press-fitting fixture, which includes a support base for placing the main frame.

[0016] Compared with the prior art, the pressing fixture of this application is used to install anti-rotation pins onto the main frame. The pressing fixture includes an elastic element, a first limiting element, a second limiting element, and a pressing element. The first limiting element is used to assemble onto the main frame and has a first mounting hole. The second limiting element is disposed opposite to the first limiting element in the pressing direction. The elastic element is sandwiched between the first and second limiting elements in the pressing direction. The second limiting element has a second mounting hole, and the first and second mounting holes correspond to each other in the pressing direction. The pressing element applies downward pressure along the pressing direction to the second limiting element from the side away from the first limiting element, so that the anti-rotation pin located in the first and second mounting holes is installed onto the main frame along the pressing direction. Through the above embodiment, by separating the first and second limiting elements by the elastic element, the guide length of the anti-rotation pin can be extended, and the perpendicularity of the anti-rotation pin before pressing is equivalent to the standard of perpendicularity of the pressed-in anti-rotation pin. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an embodiment of the press-fitting fixture provided in this application;

[0019] Figure 2 This is an exploded structural diagram of an embodiment of the press-fitting tooling provided in this application;

[0020] Figure 3 This is a schematic diagram of an embodiment of the first limiting member provided in this application;

[0021] Figure 4 This is a schematic diagram of an embodiment of the second limiting member provided in this application.

[0022] Reference numerals: Pressing fixture 10; Main frame 100; Anti-rotation pin 110; Second positioning part 120; Elastic element 200; First limiting element 300; First annular part 310; First receiving groove 311; First assembly hole 312; Outer protrusion 320; First positioning part 321; Positioning pin 322; Guide hole 330; Guide part 331; Second limiting element 400; Second annular part 410; Second assembly hole 411; Second receiving groove 412; Guide post 420; Guide groove 421; Pressing component 500; Pressing plate 510; Pressing head 520; Support base 530; Pressing direction X. Detailed Implementation

[0023] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0025] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0028] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0029] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0030] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0031] A scroll compressor is a highly efficient and compact positive displacement fluid machine. Its core working components consist of a fixed stationary disc and an eccentrically moving disc. The scrolls of the two discs mesh with each other, forming a series of closed crescent-shaped compression chambers. In actual operation, due to manufacturing tolerances, assembly clearances, and dynamic changes in working load, the moving disc will inevitably be subjected to a torque that rotates around its own axis, causing it to rotate.

[0032] Anti-rotation pins are an important component of scroll compressors. They are installed on the main frame to prevent the rotating disc of the scroll compressor from rotating on its own. In existing technical solutions, the anti-rotation pins are directly placed in the anti-rotation pin guide holes of the main frame, and the anti-rotation pin limiting fixture is fitted into the anti-rotation pins. The installation position of the pressure head is adjusted, and the anti-rotation pins are pressed into the main frame one by one. The height of the limiting fixture depends on the working length of the anti-rotation pin, so it cannot provide the depth of the anti-rotation pin guide hole, thus failing to ensure a good verticality of the anti-rotation pins installed on the main frame.

[0033] To address the technical problems existing in related technologies, this application provides a press-fitting tooling 10, see [link to relevant documentation]. Figures 1 to 4 , Figure 1 This is a schematic diagram of an embodiment of the press-fitting fixture provided in this application. Figure 2 This is an exploded structural diagram of an embodiment of the press-fitting tooling provided in this application. Figure 3 This is a schematic diagram of an embodiment of the first limiting member provided in this application. Figure 4 This is a schematic diagram of an embodiment of the second limiting member provided in this application.

[0034] The press-fitting fixture 10 is used to install the anti-rotation pin 110 onto the main frame 100. The press-fitting fixture 10 includes an elastic element 200, a first limiting element 300, a second limiting element 400, and a press-fitting component 500. The first limiting element 300 is used to assemble onto the main frame 100 and is provided with a first assembly hole 312. The second limiting element 400 is disposed opposite to the first limiting element 300 in the press-fitting direction X. The elastic element 200 is clamped onto the first limiting element 300 in the press-fitting direction X. Between the first mounting hole 312 and the second mounting hole 411, the second mounting hole 400 is provided with a second mounting hole 411, and the first mounting hole 312 and the second mounting hole 411 correspond to each other in the pressing direction X; the pressing member 500 is used to apply a downward pressure along the pressing direction X from the side of the second mounting member 400 away from the first mounting member 300 to the second mounting member 400, so that the anti-rotation pin 110 located in the first mounting hole 312 and the second mounting hole 411 is installed on the main frame 100 along the pressing direction X.

[0035] The anti-rotation pin 110 is mounted on the main frame 100 along the pressing direction X by two limiting members of the pressing fixture 10. The two limiting members include a first limiting member 300 and a second limiting member 400. The first limiting member 300 and the second limiting member 400 are spaced apart in the pressing direction X. The first limiting member 300 is provided with a first mounting hole 312, and the second limiting member 400 is provided with a second mounting hole 411. The projections of the first mounting hole 312 and the second mounting hole 411 in the pressing direction X are completely coincident, so that the anti-rotation pin 110 can be inserted into the first mounting hole 312 and the second mounting hole 411 with good perpendicularity.

[0036] The elastic element 200 is sleeved between the first limiting element 300 and the second limiting element 400. When not pressed, it can separate the first limiting element 300 and the second limiting element 400, thereby providing a guiding depth for the anti-rotation pin 110 in the pressing direction X. The guiding depth refers to the depth at which the anti-rotation pin 110 can be installed on the main frame 100 before the anti-rotation pin 110 is pressed by the pressing element 500.

[0037] During press fitting, the anti-rotation pin 110 is simultaneously inserted into the first assembly hole 312 and the second assembly hole 411. The press head 520 provides downward pressure to the limiting member along the press fitting direction X, which allows the anti-rotation pin 110 to be further installed onto the main frame 100.

[0038] To achieve the anti-rotation function of the anti-rotation pin 110 and ensure the long-term reliability of the compressor, the connection between the anti-rotation pin 110 and the main frame 100 must meet the requirements of high rigidity, high precision, and excellent resistance to fretting wear. In this embodiment, the press-fitting fixture 10 can make the anti-rotation pin 110 and the main frame 100 interference fit, achieving a firm and precise connection between the two.

[0039] The first mounting hole 312 of the first limiting member 300 and the second mounting hole 411 of the second limiting member 400 are completely aligned in the pressing direction X, ensuring that the anti-rotation pin 110 has good perpendicularity when positioned between the two limiting members before pressing. Furthermore, the elastic member 200 provided between the first limiting member 300 and the second limiting member 400 allows the two limiting members to not completely overlap before pressing. This ensures that the anti-rotation pin 110 is completely positioned within the first mounting hole 312 and the second mounting hole 411 of the two limiting members, providing radial restraint for the anti-rotation pin 110 and increasing the guide depth of the anti-rotation pin 110 on the main frame 100. Sufficient guide depth provides good perpendicularity for the anti-rotation pin 110, ensuring that the perpendicularity of the anti-rotation pin 110 before pressing reaches the perpendicularity value after pressing, preventing the anti-rotation pin 110 from tilting when pressed into the main frame 100, thereby reducing the vibration and noise of the scroll compressor.

[0040] Furthermore, the first limiting member 300 is provided with a first positioning part 321. The first limiting member 300 and the main frame 100 are positioned by the first positioning part 321 and the second positioning part 120 on the pressing tool 10.

[0041] To ensure the consistency of the relative positions of the first limiting member 300 and the main frame 100 during each pressing, a first positioning part 321 is provided on the first limiting member 300. The number of first positioning parts 321 is not limited to one. Both the first positioning part 321 and the second positioning part 120 can have corresponding holes along the pressing direction X. The positioning post passes through the first positioning part 321 and the second positioning part 120, so that the first limiting member 300 and the main frame 100 maintain the same position during each pressing.

[0042] In some alternative embodiments, the first positioning part 321 can be a protrusion, and the second positioning part 120 can be a recess. The two mate along the pressing direction X. The specific shapes of the protrusion and the recess are not limited to cylindrical; they can also be hemispherical, pyramidal, or any other shape capable of mutual positioning. The roles of the first positioning part 321 and the second positioning part 120 can be interchanged, i.e., the first positioning part 321 is the recess, and the second positioning part 120 is the protrusion. Alternatively, the mating positioning parts can also be other structures that achieve similar positioning functions, such as interlocking tenon and mortise structures, interlocking hook-shaped parts and groove-shaped parts, etc., ensuring the consistency of the relative positions of the first limiting member 300 and the main frame 100 during each assembly, making the pressing structure more stable.

[0043] Furthermore, the first limiting member 300 includes a first annular portion 310 and an outward protrusion 320. The first annular portion 310 is disposed around the pressing direction X, and the outward protrusion 320 is connected to the outer side of the first annular portion 310 and extends in a direction away from the first annular portion 310. The first mounting hole 312 is located in the first annular portion 310, and the first positioning portion 321 is located in the outward protrusion 320.

[0044] Specifically, the first limiting member 300 consists of two parts: a first annular portion 310 that is annular around the pressing direction X and extends along the pressing direction X; and an outwardly protruding portion 320 connected to the outside of the first annular portion 310. The first annular portion 310 and the outwardly protruding portion 320 together constitute the first limiting member 300. A first mounting hole 312 penetrates the first annular portion 310 along the pressing direction X, and an outwardly protruding portion 320 extends outward away from the first annular portion 310. A first positioning portion 321 is disposed on the outwardly protruding portion 320. The first positioning portion 321 mates with the second positioning portion 120 and is inserted with a positioning pin 322 as the first positioning assembly point.

[0045] Furthermore, the first limiting member 300 is provided with a guide hole 330, and the second limiting member 400 is provided with a guide post 420. The guide post 420 and the guide hole 330 extend along the pressing direction X, and the guide post 420 is at least partially located in the guide hole 330.

[0046] The guide hole 330 extends along the pressing direction X at one end of the first limiting member 300 away from the second limiting member 400. The guide hole 330 passes through the geometric center of the entire first annular portion 310 in the pressing direction X, and the extended portion of the guide hole 330 is located in the tooling cavity of the main frame 100. The side of the guide hole 330 away from the first annular portion 310 contacts the inner wall of the tooling cavity of the main frame 100, serving as the second positioning assembly point.

[0047] The second limiting member 400 is provided with a guide post 420, which extends along the press-fitting direction X at one end near the first limiting member 300. The guide post 420 may be hollow inside and penetrates through the geometric center of the second limiting member 400. The diameter of the guide post 420 is smaller than the diameter of the guide hole 330, allowing the guide post 420 to be assembled into the guide hole 330 and the two to contact each other, serving as a third positioning assembly point.

[0048] The first limiting member 300 also includes a guide portion 331, which is disposed on the inner side wall of the guide hole 330. The guide post 420 is provided with a guide groove 421 extending along the pressing direction X, and the guide portion 331 is located in the guide groove 421.

[0049] A guide portion 331 is provided on the inner wall of the guide hole 330 on the first limiting member 300. The guide portion 331 protrudes from the inner wall on the side away from the main frame 100. At the same time, a guide groove 421 extending along the pressing direction X is provided on the guide post 420 of the second limiting member 400. When the guide post 420 of the second limiting member 400 is assembled into the guide hole 330 of the first limiting member 300, the guide post 420 is located in the guide groove 421 and plays a fixed positioning role, so that the second limiting member 400 maintains the consistency of the position of the first limiting member 300 during each pressing, serving as the fourth positioning assembly point. The length of the guide post 420 in the pressing direction X is greater than the length of the guide hole 330, and the length of the guide groove 421 is greater than the length of the guide portion 331, which allows the first limiting member 300 to move freely along the pressing direction X during the pressing process.

[0050] In some embodiments, the elastic element 200 is annular and surrounds the outer periphery of the guide post 420. Specifically, the elastic element 200 is sandwiched between the first limiting member 300 and the second limiting member 400, allowing them to maintain a certain distance apart in a static state. That is, the distance between the first mounting hole 312 and the second mounting hole 411 in a static state before pressing is equal to the length of the anti-rotation pin 110, ensuring that the anti-rotation pin 110 does not fully enter the main frame 100 before pressing, thus providing sufficient guiding length and improving the verticality after pressing. The elastic element 200 can be a closed ring; it can be an open, incomplete C-shaped ring; or it can be composed of multiple arc-shaped elastic elements 200.

[0051] Furthermore, the first limiting member 300 is provided with a first receiving groove 311, and the elastic member 200 is partially disposed in the first receiving groove 311; and / or, the second limiting member 400 is provided with a second receiving groove 412, and the elastic member 200 is partially disposed in the second receiving groove 412.

[0052] Specifically, a first receiving groove 311 is provided on the edge of the first annular portion 310 of the first limiting member 300 near the guide hole 330, and the first receiving groove 311 is arranged around the pressing direction X. One end of the elastic member 200 along the pressing direction X is placed in the first receiving groove 311, and the size, shape and number of the first receiving groove 311 can be arranged according to the specific design of the elastic member 200 in the actual situation.

[0053] Simultaneously, a second receiving groove 412 can be provided on the side of the second limiting member 400 near the first limiting member 300. The second receiving groove 412 is arranged circumferentially around the edge of the guide post 420 on the second annular portion 410, and the second receiving groove 412 is correspondingly arranged with the first receiving groove 311 in the pressing direction X. The other end of the elastic member 200 in the pressing direction X contacts the second receiving groove 412.

[0054] In some embodiments, the first limiting member 300 includes a first annular portion 310, a first mounting hole 312 is located in the first annular portion 310, the second limiting member 400 includes a second annular portion 410, a second mounting hole 411 is located in the second annular portion 410, and the first annular portion 310 and the second annular portion 410 are spaced apart in the pressing direction X.

[0055] The first mounting hole 312 of the first limiting member 300 penetrates the first annular portion 310 along the pressing direction X; the second mounting hole 411 of the second limiting member 400 penetrates the second annular portion 410 along the pressing direction X. The first limiting member 300 and the second limiting member 400 are connected to the guide post 420 through the guide hole 330, and the guide portion 331 is connected to the guide groove 421 through two pairs of pressing positioning points, ensuring that the second limiting member 400 is consistently positioned on the first limiting member 300 each time. The first annular portion 310 and the second annular portion 410 are spaced apart along the pressing direction X, so the projections of the first mounting hole 312 and the second mounting hole 411 in the pressing direction X completely overlap, ensuring that the anti-rotation pin 110 maintains good perpendicularity when placed in both the first mounting hole 312 and the second mounting hole 411.

[0056] The number of the first mounting hole 312 and the second mounting hole 411 is not limited, but is preferably 6 pairs, that is, the number of anti-rotation pins 110 is 6. This can evenly distribute the load, avoid the large force on a single anti-rotation pin 110, and avoid the problems of structural complexity and increased cost caused by too many anti-rotation pins 110.

[0057] In some embodiments, the press-fitting component 500 includes a press plate 510 and a press head 520. The press plate 510 is disposed on the side of the second limiting member 400 opposite to the first limiting member 300. The press plate 510 covers the second mounting hole 411. The press head 520 is used to press the press plate 510 from the side of the press plate 510 opposite to the second limiting member 400.

[0058] Specifically, to ensure effective transmission of downward pressure during the pressing process, the pressing component 500 is equipped with a pressure plate 510. The pressure plate 510 is located on the side of the second limiting member 400 away from the first limiting member 300, and the pressure plate 510 covers the second assembly hole 411. The geometric center of the pressure plate 510 is provided with a groove for placing the end of the pressure head 520 according to the shape of the pressure head 520, which can cover the end of the pressure head 520 over a large area. Pressing force is applied from the end of the pressure head 520 away from the second limiting member 400 along the pressing direction X from the pressure plate 510, which can realize the stable transmission of downward pressure between the pressure head 520 and the anti-rotation pin 110. Furthermore, the pressure head 520 does not directly contact the anti-rotation pin 110, avoiding the inconsistency of the force position of the pressure head 520 from affecting the perpendicularity of the anti-rotation pin 110.

[0059] In some embodiments, the pressing fixture 10 includes a support base 530 for placing the main frame 100. During the pressing process, the support base 530 is placed on the pressing table, and the main frame 100 is placed on it, thus providing support during the pressing process.

[0060] In summary, by using the elastic element 200 and the two-stage first limiting element 300 and second limiting element 400, the guide length of the anti-rotation pin 110 during press-fitting can be extended to the axial length of the anti-rotation pin 110, ensuring sufficient guidance of the anti-rotation pin 110. This allows the perpendicularity of the anti-rotation pin 110 before press-fitting to be consistent with the standard of perpendicularity of the pressed-in anti-rotation pin 110. Furthermore, the use of four positioning assembly points during press-fitting ensures that the anti-rotation pin 110 is fully positioned, thereby guaranteeing the consistency of press-fitting.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pressing tool (10), characterized in that, The press-fitting fixture (10) is used to install the anti-rotation pin (110) onto the main frame (100), and the press-fitting fixture (10) includes: Elastic element (200); A first limiting member (300) is used to be assembled on the main frame (100), and the first limiting member (300) is provided with a first assembly hole (312); The second limiting member (400) is disposed opposite to the first limiting member (300) in the pressing direction (X). The elastic member (200) is sandwiched between the first limiting member (300) and the second limiting member (400) in the pressing direction (X). The second limiting member (400) is provided with a second mounting hole (411). The first mounting hole (312) and the second mounting hole (411) correspond to each other in the pressing direction (X). A press-fitting component (500) is used to apply downward pressure from the side of the second limiting component (400) away from the first limiting component (300) toward the second limiting component (400) in the press-fitting direction (X) so that the anti-rotation pin (110) located in the first mounting hole (312) and the second mounting hole (411) is mounted on the main frame (100) in the press-fitting direction (X).

2. The pressing fixture (10) according to claim 1, characterized in that, The first limiting member (300) is provided with a first positioning part (321). The first limiting member (300) and the main frame (100) are positioned by the first positioning part (321) and the second positioning part (120) on the pressing tool (10).

3. The pressing fixture (10) according to claim 2, characterized in that, The first limiting member (300) includes a first annular portion (310) and an outward protrusion (320). The first annular portion (310) is disposed around the pressing direction (X). The outward protrusion (320) is connected to the outside of the first annular portion (310) and extends in a direction away from the first annular portion (310). The first mounting hole (312) is located in the first annular portion (310), and the first positioning portion (321) is located in the outward protrusion (320).

4. The press-fitting fixture (10) according to claim 1, characterized in that, The first limiting member (300) is provided with a guide hole (330), and the second limiting member (400) is provided with a guide post (420). The guide post (420) and the guide hole (330) extend along the pressing direction (X), and the guide post (420) is at least partially located in the guide hole (330).

5. The press-fitting fixture (10) according to claim 4, characterized in that, The first limiting member (300) further includes a guide portion (331), which is disposed on the inner sidewall of the guide hole (330). The guide post (420) is provided with a guide groove (421) extending along the pressing direction (X), and the guide portion (331) is located in the guide groove (421).

6. The press-fitting fixture (10) according to claim 4, characterized in that, The elastic element (200) is annular and surrounds the outer periphery of the guide post (420).

7. The press-fitting fixture (10) according to claim 1, characterized in that, The first limiting member (300) is provided with a first receiving groove (311), and the elastic member (200) is partially disposed in the first receiving groove (311); And / or, the second limiting member (400) is provided with a second receiving groove (412), and the elastic member (200) is partially disposed in the second receiving groove (412).

8. The press-fitting fixture (10) according to claim 1, characterized in that, The first limiting member (300) includes a first annular portion (310), and the first mounting hole (312) is located in the first annular portion (310). The second limiting member (400) includes a second annular portion (410), and the second mounting hole (411) is located in the second annular portion (410). The first annular portion (310) and the second annular portion (410) are spaced apart in the pressing direction (X).

9. The press-fitting fixture (10) according to claim 1, characterized in that, The press-fitting component (500) includes a pressure plate (510) and a pressure head (520). The pressure plate (510) is disposed on the side of the second limiting member (400) away from the first limiting member (300). The pressure plate (510) covers the second assembly hole (411). The pressure head (520) is used to press the pressure plate (510) from the side of the pressure plate (510) away from the second limiting member (400).

10. The press-fitting fixture (10) according to any one of claims 1 to 9, characterized in that, The press-fitting fixture (10) includes a support base (530) for placing the main frame (100).

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