Press fitting tool

Abstract

The utility model discloses a press fitting tool which comprises a press fitting bottom plate and a rotating bottom plate, and the rotating bottom plate can rotate relative to the press fitting bottom plate. The bottom boss is arranged on the side, away from the press-fitting bottom plate, of the rotating bottom plate, and the pressing head is used for being connected with the contraction output end of a pressing machine; the number of the positioning assemblies is multiple, and the multiple positioning assemblies are distributed in the circumferential direction of the rotating bottom plate at intervals; the positioning assembly comprises a positioning pin, and when the positioning pin is in a contraction state, the press-fitting tool is used for press-fitting the gear ring; when the positioning pin is in an ejection state, the positioning pin can limit the connecting rod, and the press fitting tool is used for press fitting of the adjusting front cover. By means of the press-fitting tool, the gear ring and the adjusting front cover can be subjected to press-fitting, the integration level and the operation efficiency of the press-fitting tool are improved, and in addition, the press-fitting precision can be improved.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle component manufacturing technology, and in particular to a press-fitting tool. Background Technology

[0002] In current technology, when producing basic braking products for rail transit, specifically when producing connecting rod-related components for basic braking products for rail transit, press-fitting fixtures are required to press-fit the gear ring and adjusting front cover.

[0003] However, existing technology requires two press-fitting fixtures (i.e., gear ring press-fitting fixture and front cover adjustment press-fitting fixture) to press-fit the gear ring and front cover adjustment fixture respectively. Overall, the press-fitting fixtures have a low degree of integration and low operating efficiency.

[0004] Furthermore, when existing gear rings are press-fitted using gear ring press-fitting fixtures, the connecting rod and press head are simply aligned using a single positioning pin. Overall, the alignment accuracy is poor, and the press-fitting accuracy needs to be improved.

[0005] Therefore, it is necessary to propose a press-fitting fixture to solve at least one of the above problems. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a pressing tool, specifically a pressing tool for connecting rods of basic braking products for rail transit. This pressing tool can be used to press the gear ring and the adjusting front cover separately, improving the integration and operational efficiency of the pressing tool, and also improving the pressing accuracy.

[0007] The specific technical solution of this utility model embodiment is as follows:

[0008] A pressing fixture includes: a pressing base plate with a first through hole in its center along the thickness direction; a rotating base plate with a second through hole in its center along the thickness direction, the second through hole being directly opposite the first through hole, and the rotating base plate being rotatable relative to the pressing base plate; a bottom boss located on the side of the rotating base plate away from the pressing base plate, the bottom boss having a third through hole in its center along the thickness direction, the third through hole being directly opposite the second through hole; a pressing head for connecting to the shrinking output end of a press; and a positioning assembly comprising multiple sets of positioning assemblies spaced circumferentially along the rotating base plate; each positioning assembly includes a positioning pin, which, when in a retracted state, allows the pressing fixture to press a gear ring; and when in an extended state, the positioning pin limits the movement of a connecting rod, allowing the pressing fixture to press an adjustment front cover.

[0009] In a preferred embodiment, the rotating component includes a support bearing, and the press-fit base plate is provided with a mounting part. The support bearing is mounted on the press-fit base plate through the mounting part. The rotating base plate is engaged with the support bearing in a detachable snap-fit ​​manner, and the rotating base plate can rotate relative to the press-fit base plate through the support bearing.

[0010] In a preferred embodiment, the positioning assembly further includes: a fixing frame fixed to the rotating base plate, the fixing frame having a mounting hole for the positioning pin to pass through, the positioning pin passing through the mounting hole, and the fixing frame having opposing inner and outer sides along the axial direction of the positioning pin; a limiting cylinder sleeved around the positioning pin and located outside the fixing frame, a predetermined gap being formed between the limiting cylinder and the positioning pin; a tension spring disposed within the predetermined gap, the positioning pin having a radially protruding limiting portion located outside the fixing frame, one end of the tension spring being connected to the limiting portion; and a guide member sleeved around the positioning pin and located inside the fixing frame, the other end of the tension spring being connected to the guide member.

[0011] In a preferred embodiment, the limiting cylinder is a hollow cylinder with open ends. The limiting cylinder includes a hollow cylindrical body, and short grooves and long grooves of different depths are formed on the side wall of the cylindrical body. When the limiting part is located in the short groove, the positioning pin is in a retracted state, and the pressing tool is used to press the gear ring. When the limiting part is located in the long groove, the positioning pin is in an extended state, and the positioning pin can limit the connecting rod. The pressing tool is used to press the adjusting front cover.

[0012] In a preferred embodiment, the positioning pin is rotatable relative to the limiting cylinder. In the circumferential direction of the cylinder, there are multiple short grooves and multiple long grooves, and the short grooves and the long grooves are distributed sequentially at predetermined central angles.

[0013] In a preferred embodiment, the mounting bracket includes a first portion for mounting the mounting hole and a second portion for connecting the rotating base plate, the second portion being detachably connected to the rotating base plate.

[0014] In a preferred embodiment, the press-fitting fixture includes a plurality of guides, the plurality of guides having different thicknesses.

[0015] In a preferred embodiment, openings are provided on both sides of the connecting rod, and bushings are provided in the openings. One end of the positioning pin is matched with the center hole of the bushing.

[0016] In a preferred embodiment, the number of positioning components is two sets, and the two sets of positioning components are symmetrically arranged on both sides of the rotating base plate.

[0017] In a preferred embodiment, the pressing fixture further includes a pressing limiting sleeve assembly, which is used to limit the rotation of the rotating base plate relative to the pressing base plate.

[0018] The technical solution of this utility model has the following significant beneficial effects:

[0019] In this embodiment, by employing a single pressing fixture and switching between different usage modes, the gear ring and adjusting front cover on the connecting rod can be pressed into place separately. The bottom boss aligns the connecting rod centrally, and the locating pin provides secondary positioning, resulting in more precise positioning. Furthermore, by utilizing the locating pin in conjunction with the connecting rod, the connecting rod is secured, preventing shaking during operation that could cause the gear ring and locating ring to detach from their positions, thus ensuring the smooth pressing of the gear ring.

[0020] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, embodiments of the present invention include many changes, modifications, and equivalents. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0021] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0022] Figure 1 This is a schematic diagram of the structure of a pressing tool provided in the embodiments of this application;

[0023] Figure 2 This is a schematic diagram of the positioning component in a press-fitting fixture provided in the embodiments of this application;

[0024] Figure 3 This is a schematic diagram of the positioning cylinder in the positioning assembly of a press-fitting fixture provided in this application embodiment.

[0025] Reference numerals in the figures of this application:

[0026] 1. Press-fit base plate;

[0027] 2. Support bearing;

[0028] 3. Rotate the base plate;

[0029] 4. Positioning components;

[0030] 5. Press-fit limit sleeve assembly;

[0031] 6. Bottom boss;

[0032] 7. Pressure head;

[0033] 41. Fixture;

[0034] 42. Positioning pin;

[0035] 421. Limiting part;

[0036] 43. Tension spring;

[0037] 44. Guide components;

[0038] 45. Limiting cylinder;

[0039] 451. Short groove;

[0040] 452. Long groove. Detailed Implementation

[0041] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate this utility model and are not intended to limit the scope of this utility model. After reading this utility model, any modifications of this utility model in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0042] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0043] 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 belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] This utility model provides a pressing tool, specifically a pressing tool for connecting rods of basic braking products for rail transit. This pressing tool can be used to press the gear ring and the adjusting front cover separately, improving the integration and operating efficiency of the pressing tool, and also improving the pressing accuracy.

[0045] Please refer to the following for comprehensive information. Figures 1 to 2 This application specification provides a press-fitting fixture, which may include: a press-fitting base plate 1, wherein a first through hole is formed in the middle of the press-fitting base plate 1 along the thickness direction; a rotating base plate 3, wherein a second through hole is formed in the middle of the rotating base plate 3 along the thickness direction, the second through hole being directly opposite the first through hole, and the rotating base plate 3 being rotatable relative to the press-fitting base plate 1; and a bottom boss 6, wherein the bottom boss 6 is disposed on the side of the rotating base plate 3 away from the press-fitting base plate 1, and a third through hole is formed in the middle of the bottom boss 6 along the thickness direction. The third through hole is positioned opposite to the second through hole; the pressure head 7 is used to connect to the shrink output end of the press; the positioning assembly 4 includes multiple sets of positioning assemblies 4, which are distributed circumferentially along the rotating base plate 3; the positioning assembly 4 includes a positioning pin 42, which is used to press the gear ring when the positioning pin 42 is in the retracted state; when the positioning pin 42 is in the ejected state, the positioning pin 42 can limit the connecting rod, and the pressing tool is used to press the adjusting front cover.

[0046] In this embodiment, by employing a single pressing fixture and switching between different usage modes, the gear ring and the adjusting front cover on the connecting rod can be pressed into place separately. The bottom boss 6 aligns the connecting rod centrally, and the positioning pin 42 provides secondary positioning for the connecting rod, resulting in more precise positioning. Furthermore, by utilizing the positioning pin 42 in conjunction with the connecting rod, the connecting rod is fixed in place, preventing shaking during operation that could cause the gear ring and positioning ring to detach from their positions, thus ensuring the smooth pressing of the gear ring.

[0047] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] The press-fitting fixture may mainly include: a press-fitting base plate 1, a support bearing 2, a rotating base plate 3, a positioning assembly 4, a bottom boss 6, and a press head 7, etc.

[0049] In this embodiment, the pressing base plate 1 can be located at the bottom. The pressing base plate 1 is plate-shaped with a predetermined thickness. A first through hole is formed in the middle of the pressing base plate 1 along the thickness direction.

[0050] The rotating base plate 3 can be located above the press-fit base plate 1. The rotating base plate 3 is plate-shaped with a predetermined thickness. The rotating base plate 3 has a second through hole along the thickness direction, and the second through hole is directly opposite to the first through hole.

[0051] The rotating base plate 3 is mounted on one side of the press-fit base plate 1 via a rotating component. Specifically, the rotating component enabling relative rotation between the rotating base plates 3 can be a support bearing 2. When the rotating component is the support bearing 2, the press-fit base plate 1 is provided with a mounting part, and the support bearing 2 is mounted on the press-fit base plate 1 through the mounting part. The rotating base plate 3 is detachably engaged with the support bearing 2, allowing the rotating base plate 3 to rotate relative to the press-fit base plate 1 via the support bearing 2. Specifically, the mounting part can be a circular groove of a certain depth that matches the bottom surface of the support bearing 2.

[0052] Of course, the specific form of relative rotation between the rotating base plate 3 and the pressing base plate 1 is not limited to the examples above. Those skilled in the art may make other changes under the guidance of the technical essence of this application, but as long as the function and effect achieved are the same as or similar to this application, they should be covered within the scope of protection of this application.

[0053] In this embodiment, the positioning component 4 may include a positioning pin 42, which can switch positions along its axial direction to switch between a retracted state and an ejected state, thereby enabling the press-fitting fixture to press-fit the gear ring and the adjusting front cover respectively.

[0054] In this embodiment, there are two sets of positioning components 4, which are symmetrically arranged on both sides of the rotating base plate 3. When there are two sets of positioning components 4, the positioning effect can be achieved, and it can also be adapted to the number and position of the two openings on the connecting rod that need to be positioned.

[0055] In some embodiments, the positioning assembly 4 may further include: a fixing frame 41, which is fixed to the rotating base plate 3, and has a mounting hole for the positioning pin 42 to pass through, the positioning pin 42 passing through the mounting hole, the fixing frame 41 having opposing inner and outer sides along the axial direction of the positioning pin 42; a limiting sleeve 45, which is sleeved around the positioning pin 42 and located outside the fixing frame 41, a predetermined gap being formed between the limiting sleeve and the positioning pin 42; a tension spring 43, disposed within the predetermined gap, the positioning pin 42 having a radially protruding limiting portion 421 located outside the fixing frame 41, one end of the tension spring 43 being connected to the limiting portion 421; and a guide member 44, which is sleeved around the positioning pin 42 and located inside the fixing frame 41, the other end of the tension spring 43 being connected to the guide member 44.

[0056] In this embodiment, the positioning component 4 may mainly include a positioning pin 42 and components for switching the state of the positioning pin 42. For example, the positioning component 4 may also include a fixing frame 41, a limiting cylinder 45, a tension spring 43, a guide member 44, etc.

[0057] The fixing bracket 41 is fixed to the rotating base plate 3. The fixing bracket 41 is provided with a mounting hole for the positioning pin 42 to pass through, and the positioning pin 42 passes through the mounting hole.

[0058] Specifically, the fixing frame 41 may include a first part for mounting the mounting hole and a second part for connecting the rotating base plate 3, the second part being detachably connected to the rotating base plate 3.

[0059] like Figure 2 As shown, the first and second parts of the fixing bracket 41 can be perpendicular to each other, and the mounting hole can be provided in the first part. On the second part, near the first part, a mounting portion for mounting the guide member 44 can be provided, the size of which can match the width of the mounting portion. The mounting portion can be in the form of a slotted pad, or it can be in other forms; this application does not impose a single limitation. The second part can have multiple connecting portions located away from the first part. These connecting portions can specifically be in the form of screw holes. When the fixing bracket 41 is connected to the rotating base plate 3, it can be connected to the rotating base plate 3 by setting screws in these screw holes. Of course, the rotating base plate 3 can also have screw holes matching these screw holes at corresponding positions.

[0060] like Figure 3As shown, the limiting sleeve 45 is used in conjunction with the tension spring 43 to achieve the state switching of the positioning pin 42. The limiting sleeve 45 is sleeved around the positioning pin 42 and located outside the fixing frame 41, and a predetermined gap is formed between the limiting sleeve 45 and the positioning pin 42.

[0061] Specifically, the limiting cylinder 45 is a hollow cylinder with open ends. The limiting cylinder 45 includes a hollow cylindrical body. The side wall of the cylindrical body is provided with short grooves 451 and long grooves 452 of different depths. When the limiting part 421 is located in the short groove 451, the positioning pin 42 is in a retracted state, and the pressing tool is used to press the gear ring. When the limiting part 421 is located in the long groove 452, the positioning pin 42 is in an extended state, and the positioning pin 42 can limit the connecting rod. The pressing tool is used to press the adjusting front cover.

[0062] Two lugs may be provided on the first part of the limiting cylinder 45 near the fixing frame 41, which can be used to achieve a detachable connection with the first part. Specifically, the detachable connection can be a screw connection or a bolt connection.

[0063] Furthermore, the positioning pin 42 can rotate relative to the limiting cylinder 45. In the circumferential direction of the cylinder, there are multiple short grooves 451 and multiple long grooves 452. The short grooves 451 and the long grooves 452 are distributed sequentially at predetermined central angles.

[0064] Specifically, with Figure 3 As shown in the example, the long groove 452 and the short groove 451 are distributed at 90° intervals. There can be two long grooves 452 and two short grooves 451. When it is necessary to change the state of the positioning pin 42, the positioning pin 42 can be pulled out and rotated 90° to achieve the switching. Specifically, in the initial state, the limiting part 421 on the positioning pin 42 is stuck in the short groove 451 of the limiting cylinder 45, and one end (inner end) of the positioning pin 42 does not protrude from the inner side of the guide member 44. Pulling the positioning pin 42 outward causes the limiting part 421 to disengage from the short groove 451 of the limiting cylinder 45. Then, rotating the positioning pin 42 by 90° causes the limiting part 421 of the positioning pin 42 to slide into the long groove 452 of the limiting cylinder 45. Under the action of the tension spring 43, the inner end of the positioning pin 42 protrudes from the inner side of the guide member 44.

[0065] Of course, the number and distribution of the long slots 452 and short slots 451 are not limited to the examples above, and there can be more groups. In particular, this application will not elaborate on the examples here.

[0066] Furthermore, the force required to rotate the positioning pin 42 can be applied manually by an operator, or it can be applied by a machine. Specifically, this application does not impose a single limitation. When the force is applied manually by an operator, the positioning pin 42 can also be equipped with a handle for easy operation.

[0067] In this embodiment, the tension spring 43 is used to connect the positioning pin 42 and the guide member 44, and to apply tension to the positioning pin 42, so that the positioning pin 42 has a tendency to move inward in real time. Specifically, the tension spring 43 can be disposed in a predetermined gap between the positioning pin 42 and the limiting cylinder 45. The positioning pin 42 is provided with a radially protruding limiting part 421 on the outer side of the fixing frame 41, and one end of the tension spring 43 is connected to the limiting part 421.

[0068] In this embodiment, the guide member 44 is used to extend or retract the positioning pin 42 in a predetermined direction. The guide member 44 is sleeved around the positioning pin 42 and located inside the fixing frame 41, and the other end of the tension spring 43 is connected to the guide member 44. Specifically, the guide member 44 can be a block-shaped structure with a predetermined thickness, the thickness of which refers to the dimension along the axial direction of the positioning pin 42. The guide member 44 also has a through hole along the thickness direction for the positioning pin 42 to pass through.

[0069] In one specific embodiment, the press-fitting fixture may include a plurality of guide members 44, each guide member 44 having a different thickness. The multiple guide members 44 of different thicknesses can accommodate different connecting rods, thereby improving the adaptability of the press-fitting operation.

[0070] In one specific embodiment, openings are provided on both sides of the connecting rod, and bushings are provided in the openings. One end of the positioning pin 42 is matched with the center hole of the bushing.

[0071] In this embodiment, when the positioning pin 42 can be matched with the center hole of the bushing at one end of the guide member 44, the bushing can be pressed into the connecting rod during the adjustment of the front cover, thereby further improving the pressing efficiency.

[0072] In one embodiment, the pressing fixture may further include a pressing limiting sleeve assembly 5, which is used to limit the rotation of the rotating base plate 3 relative to the pressing base plate 1.

[0073] Specifically, the press-fit limiting sleeve assembly 5 may include a spring pin, the press-fit base plate 1 may be provided with a mounting groove for installing the spring pin, the rotating base plate 3 may be provided with a through hole for the spring pin to pass through, one end of the spring pin may be installed in the mounting groove and the other end may pass through the through hole on the rotating base plate 3.

[0074] In situations involving vibration or dynamic loads, the elasticity of the spring pin allows it to deform elastically under certain external forces, absorbing and buffering some energy while maintaining its connection and positioning function between the rotating base plate 3 and the press-fit base plate 1. Even if the two plates are subjected to a force that causes them to rotate relative to each other, the elastic deformation of the spring pin can adapt to this force within a certain range, resisting and limiting the relative rotation of the two plates through its own deformation, rather than easily allowing the two plates to rotate. The spring pin is then used to fix the rotating base plate 3 and the press-fit base plate 1 to prevent relative rotation.

[0075] Of course, the specific setting method of the press-fit limiting sleeve assembly 5 can also be other methods, and is not limited to the above description. Those skilled in the art may make other changes under the inspiration of the technical essence of this application, but as long as the function and effect achieved are the same as or similar to this application, they should be covered within the protection scope of this application.

[0076] The pressing fixture provided in this application includes a first working mode and a second working mode. In the first working mode, the rotating base plate 3 is snapped onto the support shaft, the gear ring is pressed, the positioning pin 42 is pulled, and the connecting rod is installed on the rotating base plate 3. The rotating base plate 3 and the pressing base plate 1 are fixed with a spring pin to prevent them from rotating relative to each other. The gear ring and the positioning pin 42 are placed on the connecting rod. Subsequently, the press is started and the press head 7 is used to press the gear ring and the positioning pin 42. The above pressing of the gear ring can overcome the problem that the existing positioning gear ring pressing fixture is not firmly positioned on the connecting rod, which easily causes the gear ring and the positioning pin 42 to deviate from the correct position during the pressing process, resulting in the pressing not being able to proceed smoothly.

[0077] In the second working mode, remove the rotating base plate 3, press and install the front cover, place the disc spring and the front cover on the mounting position on the connecting rod, and pass the lead screw through the center hole of the connecting rod; press and install the front cover so that the pin hole on the front cover is aligned with the pin hole on the lead screw, and then insert the elastic cylindrical pin.

[0078] It should be noted that in the description of this application, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0079] The various embodiments described in this specification are presented in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0080] The above are merely a few embodiments of this utility model. Although the embodiments disclosed in this utility model are as described above, the content is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed in this utility model. However, the patent protection scope of this utility model shall still be determined by the scope defined in the appended claims.

Claims

1. A press fitting tool characterized by, The pressing fixture includes: A press-fit base plate, wherein a first through hole is formed in the middle of the press-fit base plate along the thickness direction; A rotating base plate, wherein a second through hole is provided in the middle of the rotating base plate along the thickness direction, the second through hole being directly opposite the first through hole, and the rotating base plate being able to rotate relative to the press-fit base plate; A bottom boss is provided on the side of the rotating base plate away from the press-fit base plate. A third through hole is provided in the middle of the bottom boss along the thickness direction. The third through hole is directly opposite to the second through hole. A pressure head, which is used to connect to the shrink output end of the press; The positioning component includes multiple sets of positioning components, which are distributed at intervals along the circumference of the rotating base plate. The positioning component includes a positioning pin. When the positioning pin is in a retracted state, the pressing fixture is used to press the gear ring. When the positioning pin is in an extended state, the positioning pin can limit the connecting rod, and the pressing fixture is used to press the front cover.

2. The press-fitting tool according to claim 1, wherein The rotating base plate is mounted on one side of the pressing base plate via a rotating component. The rotating component includes a support bearing. The pressing base plate is provided with a mounting part. The support bearing is mounted on the pressing base plate via the mounting part. The rotating base plate is engaged with the support bearing in a detachable snap-fit ​​manner. The rotating base plate can rotate relative to the pressing base plate via the support bearing.

3. The press-fitting tool according to claim 1, wherein The positioning component also includes: A fixing frame is fixed to the rotating base plate. The fixing frame is provided with a mounting hole for the positioning pin to pass through. The positioning pin passes through the mounting hole. The fixing frame has opposing inner and outer sides along the axial direction of the positioning pin. A limiting sleeve is sleeved around the positioning pin and located outside the fixing frame, and a predetermined gap is formed between the limiting sleeve and the positioning pin. A tension spring is disposed within the predetermined gap, and the positioning pin has a radially protruding limiting part located on the outside of the fixing frame, with one end of the tension spring connected to the limiting part; A guide member is sleeved around the locating pin and located inside the fixing frame, and the other end of the tension spring is connected to the guide member.

4. The press fitting tool according to claim 3, wherein The limiting cylinder is a hollow cylinder open at both ends. The limiting cylinder includes a hollow cylindrical body, and short grooves and long grooves of different depths are formed on the side wall of the cylindrical body. When the limiting part is located in the short groove, the positioning pin is in a retracted state, and the pressing tool is used to press the gear ring. When the limiting part is located in the long groove, the positioning pin is in the ejected state, the positioning pin can limit the connecting rod, and the pressing tool is used to press the adjusting front cover.

5. The press fitting tool of claim 4, wherein The positioning pin can rotate relative to the limiting cylinder. In the circumferential direction of the cylinder, there are multiple short grooves and multiple long grooves. The short grooves and the long grooves are distributed sequentially at predetermined central angles.

6. The press fitting tool of claim 3, wherein The mounting bracket includes a first part for mounting the mounting hole and a second part for connecting the rotating base plate, the second part being detachably connected to the rotating base plate.

7. The press fitting tool of claim 3, wherein The press-fitting fixture includes a plurality of guide members, each guide member having a different thickness.

8. The press fitting tool of claim 3, wherein The connecting rod has openings on both sides, and bushings are installed in the openings. One end of the positioning pin is matched with the center hole of the bushing.

9. The press-fitting tool of claim 1, wherein The positioning components are arranged in two groups, and the two groups of positioning components are symmetrically arranged on both sides of the rotating base plate.

10. The press-fitting tool according to claim 1, wherein The pressing fixture further includes a pressing limiting sleeve assembly, which is used to limit the rotation of the rotating base plate relative to the pressing base plate.

Images