Motorcycle front stand pipe pressing tool and pressing method

Abstract

The present application relates to the technical field of motorcycle manufacturing, and discloses a motorcycle front stand pipe press-fitting tool and a press-fitting method. The press-fitting tool comprises a base, a top pressing head, a lower pressing head, an elastic lifting assembly and a supporting assembly. The supporting assembly comprises a sleeve, a push rod, an upper jacking column and a lower jacking column. The side of the sleeve is provided with a connecting pipe, the push rod is inserted into the connecting pipe and is threadedly connected with the connecting pipe, one end of the push rod close to the sleeve extends into the sleeve and is provided with a pushing head, the pushing head is tapered and gradually narrows towards the sleeve, the upper jacking column and the lower jacking column are respectively inserted into the sleeve and are slidingly connected with the sleeve, the upper jacking column is arranged above the pushing head, the bottom of the upper jacking column is provided with a first guide surface matched with the pushing head, the lower jacking column is arranged below the pushing head, and the top of the lower jacking column is provided with a second guide surface matched with the pushing head. The present application further discloses a press-fitting method using the tool. When press-fitting, the supporting assembly can prevent the front stand pipe from being deformed during the press-fitting process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motorcycle manufacturing, in particular to a motorcycle front stand pipe pressing tool and pressing method. BACKGROUND

[0002] At present, the front stand pipe of a motorcycle is an important component of the motorcycle frame, which is mainly responsible for supporting the front wheel and steering system of the motorcycle, and is a key component for steering and front wheel suspension of the motorcycle. It connects the front shock absorber, front wheel and frame together, and bears the impact force from the road and the lateral force when steering. In the manufacturing process of the motorcycle, it is necessary to install a seat ring at the top end and the bottom end of the front stand pipe. Generally, the seat ring is placed on the pressing head of the pressing tool, then the front stand pipe is placed in the position of the pressing head, and then the pressing machine is started to drive the pressing head to press down until the seat ring on the pressing head is pressed into the inside of the front stand pipe.

[0003] With the update iteration of motorcycles, the design of motorcycle frames is constantly emerging, and in some designs, the side of the front stand pipe is provided with a hollow groove to form a mounting cavity for assembling some components, such as Figure 1 As shown in the figure, the front stand pipe 9 includes a groove body 91, an upper pipe 92 and a lower pipe 93, the side of the groove body 91 is provided with a hollow groove 911, the top of the groove body is provided with an upper pipe, and the bottom of the groove body is provided with a lower pipe. The traditional seat ring pressing tool does not take into account the structure of the front stand pipe with a hollow groove, resulting in that when such a front stand pipe is used, the top and bottom of the hollow groove of the front stand pipe will not withstand the pressing pressure and will be deformed. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a front stand pipe pressing tool and pressing method which can provide support for the hollow groove of the front stand pipe and prevent deformation during the pressing process, and ensure the pressing precision of the front stand pipe.

[0005] In order to solve the above technical problems, the application provides a motorcycle front stand pressing tool, which comprises a base, a top pressing head, a lower pressing head, an elastic lifting assembly and a supporting assembly, the top pressing head is installed on the base, the lower pressing head is arranged above the top pressing head and is used for being connected with an output end of a hydraulic machine, the elastic lifting assembly is arranged on the base and is used for supporting a frame, and the supporting assembly comprises a sleeve, a push rod, an upper jacking column and a lower jacking column, a connecting pipe is arranged on the side of the sleeve, the push rod is inserted into the connecting pipe and is threadedly connected with the connecting pipe, one end of the push rod close to the sleeve is inserted into the sleeve and is provided with a pushing head, the pushing head is tapered and gradually narrows in the direction close to the sleeve, the upper jacking column and the lower jacking column are respectively inserted into the sleeve and are slidably connected with the sleeve, the upper jacking column is arranged above the pushing head, the bottom of the upper jacking column is provided with a first guide surface matched with the pushing head, the lower jacking column is arranged below the pushing head, and the top of the lower jacking column is provided with a second guide surface matched with the pushing head.

[0006] As a preferred scheme of the application, the elastic lifting assembly comprises a fixed block, a fixed pipe, a spring, a movable column, a movable block, a connecting block and a lifting block, the fixed block is installed on the base, the fixed pipe is installed on the top of the fixed block, the movable column is slidably inserted into the fixed pipe, the movable block is installed on the top end of the movable column, the spring is sleeved on the movable column and is located between the movable block and the fixed pipe, the connecting block is installed on the movable block, and the lifting block is installed on the connecting block, and the top of the lifting block is provided with a positioning groove capable of positioning and placing a frame.

[0007] As a preferred scheme of the application, the side of the fixed block is provided with a guide column, one side of the guide column close to the fixed block is provided with a vertical guide groove, and the side of the movable block is provided with a guide block slidably matched with the guide groove.

[0008] As a preferred scheme of the application, the connecting block is arranged on one side of the movable block, a plurality of adjusting washers are overlapped between the connecting block and the mounting block, and the movable block is connected with the connecting block through a connecting piece.

[0009] As a preferred scheme of the present application, the base is provided with a mounting block, the top pressing head is mounted on the mounting block, the top of the mounting block is provided with a mounting hole, a locking bolt is inserted in the mounting hole and is threadedly connected with the base, the outer diameter of the locking bolt is smaller than the hole diameter of the mounting hole, a first adjusting block is arranged on one lateral side of the mounting block, a plurality of overlapped first gaskets are arranged between the first adjusting block and the mounting block, the first adjusting block is provided with a first slot hole arranged in the longitudinal direction, a first connecting bolt is connected with the mounting block through the first slot hole, a second adjusting block is arranged on one longitudinal side of the mounting block, a plurality of overlapped second gaskets are arranged between the second adjusting block and the mounting block, and the second adjusting block is provided with a second slot hole arranged in the longitudinal direction, and a second connecting bolt is connected with the mounting block through the second slot hole.

[0010] As a preferred scheme of the present application, the two sides of the top pressing head are respectively provided with a stand column mounted on the base, and a lower pressing plate is slidingly connected with the stand column, and the lower pressing head is mounted on the bottom of the lower pressing plate.

[0011] As a preferred scheme of the present application, the side of the upper top column is provided with a limiting slot arranged in the vertical direction, and the side of the sleeve is fixed with a limiting shaft slidingly matched with the limiting slot.

[0012] As a preferred scheme of the present application, the inside of the bottom end of the sleeve is provided with a limiting ring, and the bottom of the lower top column is provided with a ejection part slidingly matched with the inner ring of the limiting ring.

[0013] Meanwhile, the present application also provides a pressing method using the motorcycle front stand pipe pressing tool, the side of the front stand pipe is provided with a hollow groove, and the pressing method comprises the following steps:

[0014] S1: a seat ring is sleeved on the top pressing head and the lower pressing head respectively, and the lower pressing head is connected with the output end of a hydraulic machine;

[0015] S2: the frame is placed on the elastic lifting assembly, so that the position of the bottom end of the front stand pipe is aligned with the position of the top pressing head;

[0016] S3: the sleeve is placed into the hollow groove, and then the push rod is rotated, so that the top end of the upper top column is abutted against the top wall of the hollow groove, and the bottom end of the lower top column is abutted against the bottom wall of the hollow groove;

[0017] S4: the hydraulic machine is controlled to gradually lower the lower pressing head, until the seat ring on the lower pressing head is pressed into the top end of the front stand pipe and the seat ring on the top pressing head is pressed into the bottom end of the front stand pipe;

[0018] S5: Operate the hydraulic press to raise the upper pressure head and separate it from the top of the front upright tube. Then rotate the push rod to separate the top of the upper top column from the top of the hollow groove. Next, remove the sleeve from the hollow groove. Finally, remove the frame from the elastic support assembly.

[0019] This invention discloses a pressing fixture and method for a motorcycle front strut. Compared with existing technologies, its advantages are as follows: The push head of this invention is tapered, gradually narrowing towards the sleeve, meaning the diameter of the top cone gradually decreases towards the sleeve. The push rod is threadedly connected to the connecting pipe. Therefore, rotating the push rod causes it to move towards the sleeve. At this time, under the action of the push head cooperating with the first and second guide surfaces respectively, the upper push block rises and the lower push block falls. During the pressing process, the sleeve is placed in the hollow groove of the front strut. Rotating the push rod causes the top of the upper push column to abut against the top wall of the hollow groove, and the bottom of the lower push column to abut against the bottom wall of the hollow groove. Subsequently, when the front strut is compressed, the support assembly can play a supporting role, thereby resisting the deformation of the top and bottom of the hollow groove during the pressing process, achieving the purpose of reducing the deformation of the front strut and ensuring its concentricity offset with the seat ring, and improving the pressing qualification rate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the front riser with a hollow groove;

[0021] Figure 2 This is a structural diagram of the press-fitting tooling of the present invention;

[0022] Figure 3 This is a structural diagram of the support component of the present invention;

[0023] Figure 4 This is a cross-sectional view of the support component of the present invention;

[0024] Figure 5 This is a structural diagram of the elastic support component of the present invention;

[0025] Figure 6 yes Figure 4 The fracture structure diagram;

[0026] Figure 7 This is a structural diagram of the mounting block, the first adjusting block, and the second adjusting block of the present invention;

[0027] Figure 8 This is a connection structure diagram of the lower pressure head and the lower pressure plate of the present invention;

[0028] In the diagram, 1. Base; 11. Column; 2. Top pressure head; 3. Lower pressure head; 31. Lower pressure plate; 4. Elastic lifting assembly; 41. Fixing block; 42. Fixing tube; 43. Spring; 44. Movable column; 45. Movable block; 451. Guide block; 452. Connector; 453. Adjusting shim; 46. Connecting block; 47. Lifting block; 471. Positioning groove; 48. Guide column; 481. Guide groove; 5. Support assembly; 51. Sleeve; 511. Connecting tube; 512. Limiting shaft; 513. Limiting ring; 52. Push rod 521. Push head; 53. Upper push column; 531. First guide surface; 532. Limiting groove; 54. Lower push column; 541. Second guide surface; 542. Push-out part; 6. Mounting block; 61. Mounting hole; 62. Locking bolt; 7. First adjusting block; 71. First shim; 72. First slot; 73. First connecting bolt; 8. Second adjusting block; 81. Second shim; 82. Second slot; 83. Second connecting bolt; 9. Front riser; 91. Groove; 911. Hollow groove; 92. Upper pipe; 93. Lower pipe. Detailed Implementation

[0029] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and for 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] like Figures 2-8As shown, a preferred embodiment of the present invention provides a motorcycle front strut press-fitting fixture, comprising a base 1, a top press head 2, a bottom press head 3, an elastic support assembly 4, and a support assembly 5. The top press head 2 is mounted on the base 1, and the bottom press head 3 is positioned above the top press head 2. The bottom press head 3 is used to connect to the output end of a hydraulic press. The bottom press head 3 and the top press head 2 are respectively arranged along the same direction. The elastic support assembly 4 is mounted on the base 1 and is used to support the frame. When the frame is placed on the elastic support assembly 4, When the frame is compressed, it can move downwards a certain distance. At this time, the elastic support component 4 generates elastic force. Afterwards, when the frame is no longer compressed, the frame will return to its original position under the action of the elastic force generated by the elastic support component 4. The elastic support component 5 includes a sleeve 51, a push rod 52, an upper top column 53, and a lower top column 54. A connecting pipe 511 is provided on the side of the sleeve 51, and the interior of the connecting pipe 511 communicates with the interior of the sleeve 51. The push rod 52 is inserted into the connecting pipe 511 and... The push rod 52 is threadedly connected to the connecting pipe 511. One end of the push rod 52, near the sleeve 51, extends into the sleeve 51 and is equipped with a push head 521. The push head 521 is tapered, gradually narrowing towards the sleeve 51. The upper push post 53 and the lower push post 54 are respectively inserted into the sleeve 51 and slidably connected to the sleeve 51. The upper push post 53 is located above the push head 521, and the bottom of the upper push post 53 is provided with a first guide surface 531 that mates with the push head 521. The lower push post 54 is located below the push head 521. Below, the top of the lower pusher 54 is provided with a second guide surface 541 that cooperates with the pusher head 521. Since the pusher head 521 is a cone that gradually narrows towards the sleeve 51, that is, the diameter of the cone head gradually decreases towards the sleeve 51, rotating the pusher 52 causes the pusher 52 to move towards the sleeve 51. At this time, under the action of the pusher head 521 cooperating with the first guide surface 531 and the second guide surface 541 respectively, the upper pusher block will rise and the lower pusher block will fall.

[0032] Meanwhile, the present invention also provides a pressing method using the above-mentioned motorcycle front strut pressing fixture, wherein the side of the front strut is provided with a hollow groove, the hollow groove is provided with a top wall and a bottom wall, and includes the following steps:

[0033] S1: Fit seat rings on the top pressure head 2 and the bottom pressure head 3 respectively, and connect the bottom pressure head 3 to the output end of the hydraulic press. The output end of the hydraulic press can drive the bottom pressure head 3 to rise or fall.

[0034] S2: Place the frame on the elastic support assembly 4 so that the bottom of the front riser is aligned with the top pressure head 2. Generally, the front riser is set vertically at this time.

[0035] S3: Place the sleeve 51 into the hollow groove, and then rotate the push rod 52 so that the push rod 52 moves closer to the sleeve 51. At this time, under the action of the push head 521 cooperating with the first guide surface 531 and the second guide surface 541 respectively, the upper push block will rise and the lower push block will fall, so that the top of the upper push column 53 abuts against the top wall of the hollow groove and the bottom of the lower push column 54 abuts against the bottom wall of the hollow groove.

[0036] S4: The hydraulic press is operated to make the lower press head 3 gradually descend until the seat ring on the lower press head 3 is pressed into the top of the front riser tube and the seat ring on the top press head 2 is pressed into the bottom of the front riser tube. When the frame is compressed, the frame can move down a certain distance. At this time, the elastic support component 4 will generate elastic force. When the lower press head 3 pushes down the front riser tube, the support component 5 plays a supporting role, which can prevent the top and bottom of the hollow groove from being deformed by pressure and ensure the accuracy of pressing.

[0037] S5: Operate the hydraulic press to raise the upper pressure head and separate it from the top of the front riser. At this time, under the action of the elastic force generated by the elastic lifting assembly 4, the frame will return to its original position. Then rotate the push rod 52 to separate the top of the upper top column 53 from the top of the hollow groove. Then take the sleeve 51 out of the hollow groove and finally remove the frame from the elastic lifting assembly 4.

[0038] The pusher head 521 of the present invention is tapered and gradually narrows towards the sleeve 51, that is, the diameter of the top cone head gradually decreases towards the sleeve 51. The push rod 52 is threadedly connected to the connecting pipe 511. Therefore, rotating the push rod 52 causes it to move towards the sleeve 51. At this time, under the action of the pusher head 521 cooperating with the first guide surface 531 and the second guide surface 541 respectively, the upper push block will rise and the lower push block will fall. During the pressing process, the sleeve 51 is placed in the hollow groove of the front riser. Rotating the push rod 52 causes the top of the upper push column 53 to abut against the top wall of the hollow groove and the bottom of the lower push column 54 to abut against the bottom wall of the hollow groove. After that, when the front riser is pressed, the support component 5 can play a supporting role, thereby resisting the deformation of the top and bottom of the hollow groove during the pressing process, achieving the purpose of reducing the deformation of the front riser and ensuring the concentricity offset between it and the seat ring, and improving the pressing qualification rate.

[0039] Compared with traditional pressing fixtures, this invention addresses the issue that traditional fixtures lack the support component 5, making it easy for the front riser to deform beyond the material's elastic deformation range during pressing, resulting in permanent deformation. Therefore, in addition to reducing the pressing force, the pressing feed speed needs to be slowed down, and the control precision of the hydraulic press output needs to be improved to prevent excessive feed speed from causing front riser deformation. In contrast, this invention features a support component 5 capable of resisting motorcycle front riser deformation, improving the front riser's resistance to deformation during pressing and significantly reducing its deformation. This makes the deformation and concentricity with the seat ring less sensitive to pressing speed and force, eliminating the need to deliberately slow down the feed speed during pressing. It also saves pressing time and reduces the cost of improving hydraulic press control precision.

[0040] For example, the elastic support assembly 4 includes a fixed block 41, a fixed tube 42, a spring 43, a movable column 44, a movable block 45, a connecting block 46, and a support block 47. The fixed block 41 is mounted on the base 1, the fixed tube 42 is mounted on the top of the fixed block 41, the movable column 44 is slidably inserted into the fixed tube 42, the movable block 45 is mounted on the top of the movable column 44, the spring 43 is sleeved on the movable column 44 and located between the movable block 45 and the fixed tube 42, the connecting block 46 is mounted on the movable block 45, and the support block 47 is mounted on the connecting block 46. The top of the support block 47 is provided with... There is a positioning groove 471 that can position and place the frame. That is, the shape of the part of the frame corresponding to the positioning groove 471 matches the shape of the positioning groove 471. Generally, the lifting block 47 is made of nylon to prevent damage to the frame. After the frame is positioned on the lifting frame, when the pressure head 3 descends and pushes the frame, the frame will move down together with the lifting block 47, the connecting block and the movable block 45. At this time, the spring 43 is compressed to generate elastic force until the seat ring is pressed into the front head tube. Then the pressure head 3 gradually rises. Under the elastic force of the spring 43, the lifting block 47, the connecting block and the movable block 45 gradually return to their original positions.

[0041] For example, the side of the fixed block 41 is provided with a guide post 48, and the side of the guide post 48 near the fixed block 41 is provided with a guide groove 481 arranged vertically. The side of the movable block 45 is provided with a guide block 451 that slides with the guide groove 481 to ensure that the movable block 45 moves vertically.

[0042] For example, the connecting block is located on one side of the movable block 45, and multiple adjusting shims 453 overlap between the connecting block and the mounting block 6. The movable block 45 is connected to the connecting block by a connector 452 (such as a bolt). By increasing or decreasing the number of adjusting shims, the position of the connecting block can be adjusted, thereby adjusting the position of the lifting block 47, ensuring that the frame can be positioned on the positioning groove 471.

[0043] For example, a mounting block 6 is provided on the base 1, and a top pressure head 2 is mounted on the mounting block 6. The top of the mounting block 6 is provided with a mounting hole 61, and a locking bolt 62 threadedly connected to the base 1 is inserted into the mounting hole 61. The outer diameter of the locking bolt 62 is smaller than the diameter of the mounting hole 61, and the bolt head of the locking bolt 62 abuts against the top of the mounting block 6. A first adjusting block 7 is provided on one side of the mounting block 6. The first adjusting block 7 is fixed on the base 1, and a plurality of overlapping first shims 71 are provided between the first adjusting block 7 and the mounting block 6. The first adjusting block 7 is provided with longitudinal... The first slot 72 is provided, through which the first connecting bolt 73 passes to connect with the mounting block 6. It is understood that the first washer 71 will not affect the connection between the first connecting bolt 73 and the mounting block 6. For example, the first washer 71 may have a clearance hole allowing the first connecting bolt 73 to pass through. A second adjusting block 8 is provided on one longitudinal side of the mounting block 6. The second adjusting block 8 is fixed to the base 1. Multiple overlapping second washer 81s are provided between the second adjusting block 8 and the mounting block 6. The second adjusting block 8 has a second slot 82 arranged longitudinally. The second connecting bolt 73... 3. The second shim 81 passes through the second slot 82 and connects to the mounting block 6. The second shim 81 does not affect the connection between the second connecting bolt 83 and the mounting block 6. By increasing or decreasing the number of the first shim 71 and the second shim 81, the installation position of the mounting block 6 and the top pressure head 2 can be adjusted to ensure that the position of the top pressure head 2 corresponds to the position of the bottom pressure head 3. Specifically, when the locking bolt 62, the first connecting bolt 73 and the second connecting bolt 83 are loosened, the bolt head of the locking bolt 62 no longer presses against the top of the mounting block 6. Since the diameter of the mounting hole 61 is larger than that of the locking bolt 62, the top pressure head 61 is connected to the mounting block 6. The outer diameter of the mounting block 6 is such that the position of the mounting block 6 can be adjusted within a certain range (between the inner side of the mounting hole 61 and the outer side of the locking bolt 62). When adjusting the position of the mounting block 6, the number of the first shims 71 or the second shims 81 needs to be increased or decreased accordingly. Finally, the first connecting bolt 73, the second connecting bolt 83 and the locking bolt 62 are tightened again to fix the mounting block 6. The first slot 72 and the second slot 82 are designed to ensure that the mounting block 6 can be properly connected to the first connecting bolt 73 and the second connecting bolt 83 after the position is adjusted.

[0044] For example, the top pressure head 2 is provided with columns 11 mounted on the base 1 on both sides. The columns 11 are slidably connected to the lower pressure plate 31. In this embodiment, the lower pressure plate 31 is equipped with a linear bearing that slides with the column 11. The lower pressure head 3 is installed at the bottom of the lower pressure plate 31. The lower pressure head 3 is connected to the output end of the hydraulic press through the lower pressure plate 31 for easy assembly. The columns 11 and the lower pressure plate 31 are slidably connected to ensure that the lower pressure head 3 moves vertically and prevents it from deviating when pressing down.

[0045] For example, the side of the upper top post 53 is provided with a vertically arranged limiting groove 532, and the side of the sleeve 51 is fixed with a limiting shaft 512 that slides with the limiting groove 532, thereby preventing the upper top post 53 from detaching from the top of the sleeve 51.

[0046] For example, a limiting ring 513 is provided inside the bottom end of the sleeve 51. The inner diameter of the limiting ring 513 is smaller than the outer diameter of the lower top column 54, thereby preventing the lower top column 54 from detaching from the bottom end of the sleeve 51. The bottom of the lower top column 54 is provided with an ejector part 542 that slides with the inner circle of the limiting ring 513. The ejector part 542 can extend out of the bottom end of the sleeve 51 through the inner circle of the limiting ring 513 and abut against the bottom wall of the hollow groove of the front riser.

[0047] The above description is only a preferred embodiment of the present invention. 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 invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A tooling for pressing a motorcycle front strut, characterized in that: The device includes a base, a top pressure head, a bottom pressure head, an elastic lifting assembly, and a support assembly. The top pressure head is mounted on the base, and the bottom pressure head is positioned above the top pressure head and is used to connect to the output end of a hydraulic press. The elastic lifting assembly is mounted on the base and is used to support the vehicle frame. The support assembly includes a sleeve, a push rod, an upper push column, and a lower push column. The sleeve has a connecting pipe on its side, and the push rod is inserted into the connecting pipe and threadedly connected to it. One end of the push rod near the sleeve extends into the sleeve and has a push head. The push head is tapered, gradually narrowing towards the sleeve. The upper and lower push columns are respectively inserted into the sleeve and slidably connected to it. The upper push column is positioned above the push head, and its bottom has a first guide surface that mates with the push head. The lower push column is positioned below the push head, and its top has a second guide surface that mates with the push head.

2. The motorcycle front strut press-fitting fixture according to claim 1, characterized in that: The elastic lifting assembly includes a fixed block, a fixed tube, a spring, a movable column, a movable block, a connecting block, and a lifting block. The fixed block is mounted on the base, the fixed tube is mounted on the top of the fixed block, the movable column is slidably inserted into the fixed tube, the movable block is mounted on the top of the movable column, the spring is sleeved on the movable column and located between the movable block and the fixed tube, the connecting block is mounted on the movable block, the lifting block is mounted on the connecting block, and the top of the lifting block is provided with a positioning groove for positioning and placing the vehicle frame.

3. The motorcycle front strut press-fitting fixture according to claim 2, characterized in that: The fixed block has a guide post on its side, and the guide post has a vertically arranged guide groove on the side near the fixed block. The movable block has a guide block on its side that slides with the guide groove.

4. The motorcycle front strut press-fitting fixture according to claim 2, characterized in that: The connecting block is located on one side of the movable block, and multiple adjusting shims overlap between the connecting block and the mounting block. The movable block is connected to the connecting block via a connector.

5. The motorcycle front strut press-fitting fixture according to claim 1, characterized in that: The base is provided with a mounting block, and the top pressure head is mounted on the mounting block. The top of the mounting block is provided with a mounting hole, and a locking bolt threaded to the base is inserted into the mounting hole. The outer diameter of the locking bolt is smaller than the diameter of the mounting hole. A first adjusting block is provided on one side of the mounting block. Multiple overlapping first shims are provided between the first adjusting block and the mounting block. The first adjusting block is provided with a first slot arranged in the longitudinal direction. A first connecting bolt passes through the first slot and connects to the mounting block. A second adjusting block is provided on one side of the mounting block in the longitudinal direction. Multiple overlapping second shims are provided between the second adjusting block and the mounting block. The second adjusting block is provided with a second slot arranged in the longitudinal direction. A second connecting bolt passes through the second slot and connects to the mounting block.

6. The motorcycle front strut press-fitting fixture according to claim 1, characterized in that: The top pressure head has columns mounted on the base on both sides, and the columns are slidably connected to a lower pressure plate. The lower pressure head is installed at the bottom of the lower pressure plate.

7. The motorcycle front strut press-fitting fixture according to claim 1, characterized in that: The upper top column has a vertically arranged limiting groove on its side, and the sleeve has a limiting shaft that slides in cooperation with the limiting groove on its side.

8. The motorcycle front strut press-fitting fixture according to claim 1, characterized in that: The bottom end of the sleeve is provided with a limiting ring, and the bottom of the lower push column is provided with an ejector part that slides with the inner ring of the limiting ring.

9. A pressing method using the motorcycle front strut pressing fixture as described in claim 1, wherein the front strut has a hollow groove on its side, characterized in that: Includes the following steps: S1: Fit seat rings onto the top pressure head and the bottom pressure head respectively, and connect the bottom pressure head to the output end of the hydraulic press; S2: Place the frame on the elastic support assembly so that the bottom end of the front riser is aligned with the position of the top pressure head; S3: Place the sleeve into the hollow groove, and then rotate the push rod so that the top end of the upper top column abuts against the top wall of the hollow groove, and the bottom end of the lower top column abuts against the bottom wall of the hollow groove. S4: Operate the hydraulic press to gradually lower the lower press head until the seat ring on the lower press head is pressed into the top end of the front riser and the seat ring on the top press head is pressed into the bottom end of the front riser. S5: Operate the hydraulic press to raise the upper pressure head and separate it from the top of the front upright tube. Then rotate the push rod to separate the top of the upper top column from the top of the hollow groove. Next, remove the sleeve from the hollow groove. Finally, remove the frame from the elastic support assembly.

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