CN221110591U - Speed reducer press-fitting device - Google Patents

Abstract

The device is provided with a supporting plate for supporting a shell, a positioning plate for positioning an outer ring of a bearing and a positioning pin, a pressure head mechanism and a limiting pin, wherein the positioning plate is arranged above the supporting plate, a positioning hole and a positioning seat are formed in the positioning plate, the shell is arranged between the supporting plate and the positioning plate during press fitting, the outer ring of the bearing is arranged in the positioning hole, the positioning pin is arranged in the positioning seat, an oil seal is arranged at the lower part of the pressure head mechanism, then the lower end of the pressure head mechanism is arranged in the positioning hole, the lower end of the limiting pin is arranged in the positioning seat, and meanwhile, the pressure head mechanism is controlled to move downwards to press the outer ring of the bearing and the oil seal and control the limiting pin to move downwards so as to press the positioning pin, and displacement of the downward movement of the pressure head mechanism is limited through the limiting pin. The utility model has the characteristics of high press fitting efficiency, accurate positioning, simple and convenient operation, simple structure, high safety and the like, and can adapt to press fitting forces of different specifications.

Description

Speed reducer press-fitting device

[ Field of technology ]

The utility model relates to the technical field of assembly of speed reducers, in particular to a speed reducer press-fitting device which is high in press-fitting efficiency, accurate in positioning and simple and convenient to operate.

[ Background Art ]

The speed reducer is used as a power transmission mechanism of the new energy automobile, and good assembly accuracy is particularly important. The bearing is an important component for ensuring the transmission power of the shafting, and the transmission efficiency can be effectively improved with good assembly precision, and the noise is reduced. In order to solve the problem of large axial force generated by shafting transmission, the new energy automobile speed reducer generally uses tapered roller bearings, and because of the characteristic of separating the inner ring and the outer ring of the tapered roller bearings, the outer ring of the bearings needs to be pressed and assembled with a shell independently. However, the existing press-fitting of the bearing outer ring cannot achieve accurate control of press-fitting force, so that the bearing outer ring cannot be ensured to be installed in place. In addition, the oil seal is used for isolating parts needing to be lubricated from the external environment, so that lubricating oil is prevented from leaking. The positioning pin has the function of accurately positioning during the box closing process, ensures the accuracy of shaft assembly and is a vital link in the assembly process. In the existing speed reducer installation process, the bearing outer ring, the oil seal and the locating pin are required to be pressed and assembled respectively, so that the pressing and assembling efficiency is low, and the operation is inconvenient.

[ Invention ]

The utility model aims to solve the problems, and provides the speed reducer press-fitting device which has high press-fitting efficiency, accurate positioning and simple and convenient operation and can press-fit the bearing outer ring, the oil seal and the positioning pin at the same time.

The utility model provides a speed reducer press-fitting device, which is provided with a supporting plate for supporting a shell, a positioning plate for positioning a bearing outer ring and a positioning pin, a press head mechanism and a limiting pin, wherein the positioning plate is arranged above the supporting plate, a positioning hole and a positioning seat are formed in the positioning plate, when the speed reducer press-fitting device is used for press-fitting, the shell is arranged between the supporting plate and the positioning plate, the bearing outer ring is arranged in the positioning hole, the positioning pin is arranged in the positioning seat, an oil seal is arranged at the lower part of the press head mechanism, then the lower end of the press head mechanism is arranged in the positioning hole, the lower end of the limiting pin is arranged in the positioning seat, and meanwhile, the press head mechanism is controlled to move downwards to press-fit the bearing outer ring and the oil seal and control the limiting pin to move downwards so as to press-fit the positioning pin, and displacement of the downward movement of the press head mechanism is limited through the limiting pin.

The pressure head mechanism comprises a first pressure head assembly used for pressing the outer ring of the first bearing and a second pressure head assembly used for pressing the outer ring of the second bearing, and when the first pressure head assembly and the second pressure head assembly are controlled to move downwards, the displacement of the downward movement of the first pressure head assembly is the same as or different from the displacement of the downward movement of the second pressure head assembly.

The bearing plate is a plate-shaped body matched with the shell in appearance, a first bearing column, a second bearing column, a third bearing column and a positioning column are arranged on the bearing plate, the first bearing column, the second bearing column and the positioning column are used for supporting the shell, the first bearing column is arranged at positions corresponding to two ends of the shell on the bearing plate, the second bearing column is arranged at positions corresponding to first bearing outer rings on the shell on the bearing plate, the third bearing column is arranged at positions corresponding to second bearing outer rings on the shell on the bearing plate, the positioning column is arranged at positions corresponding to the side parts of the shell on the bearing plate, and rubber gaskets are arranged at the upper end surfaces of the third bearing column.

The locating plate is a triangular plate-shaped body, the locating holes comprise a first locating hole corresponding to the first bearing outer ring and a second locating hole corresponding to the second bearing outer ring, an integrated locating pin is arranged on the locating plate, and the integrated locating pin is located on one side, away from the locating seat, of the locating plate.

The first pressure head assembly comprises a first guide cylinder, a first pressure head and a first spring, wherein the first spring is arranged in the first guide cylinder, the bottom end of the first pressure block is in butt joint with the first spring, and the oil jacket is arranged at the end part of the first guide cylinder.

Further, the first guide cylinder is hollow cylinder, the bottom of first guide cylinder is equipped with the first flange that extends to the below, the bottom of first flange is equipped with the second flange that extends to the below, the external diameter of second flange is less than the external diameter of first flange, first guide cylinder lateral wall is equipped with first gas pocket, first pressure head is hollow cylinder, the bottom of first pressure head is equipped with the third flange with first spring butt, first spring is rectangular spring.

Further, a first threaded hole is formed in the first pressure head, a first slotted screw matched with the first threaded hole is arranged in the first threaded hole, the end portion of the first slotted screw is contained in the first air hole, and the first pressure head is connected with the first guide cylinder into an integrated structure through the first slotted screw.

The second pressure head assembly comprises a second guide cylinder, a second pressure head and a second spring, wherein the second spring is arranged in the second guide cylinder, and the bottom end of the second pressure head is in butt joint with the second spring.

Further, the second guide cylinder is a cylinder body with one open end, a through hole is formed in the bottom of the second guide cylinder, a second air hole is formed in the side wall of the second guide cylinder, the second pressure head is a hollow cylinder body, a fourth flange which is in butt joint with a second spring is arranged at the bottom of the second pressure head, and the second spring is a rectangular spring.

Further, a second threaded hole is formed in the second pressure head, a second slotted screw matched with the second threaded hole is arranged in the second threaded hole, the end portion of the second slotted screw is contained in the second air hole, and the second pressure head is connected with the second guide cylinder into an integrated structure through the second slotted screw.

The utility model has the contribution that the problems of low press-fitting efficiency, low positioning precision, complex operation and the like in the assembly process of the existing speed reducer are effectively solved. According to the utility model, the shell is supported by the support plate, the bearing outer ring and the positioning pin are positioned by the positioning plate, during press fitting, the pressing head mechanism is controlled to move downwards to press the bearing outer ring and the oil seal, the limiting pin is controlled to move downwards to press the positioning pin, and the displacement of the pressing head mechanism, which moves downwards, is limited by the limiting pin, so that the synchronous press fitting of the bearing outer ring, the oil seal and the positioning pin is realized, the press fitting efficiency is high, the positioning is accurate, and the operation is simple and convenient. On the other hand, through setting up the displacement difference that first pressure head subassembly and second pressure equipment subassembly moved downwards, can realize bearing inner race and the different pressure equipment power of oil blanket to avoid the oil blanket to be damaged. In addition, the utility model has the characteristics of simple structure, high safety and the like, and can adapt to press-fit forces of different specifications.

[ Description of the drawings ]

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic view of an exploded construction of the present utility model.

Fig. 3 is a schematic view of the structure of the first ram assembly of the present utility model.

Fig. 4 is a schematic structural view of a second ram assembly of the present utility model.

[ Detailed description ] of the invention

The following examples are further illustrative and supplementary of the present utility model and are not intended to limit the utility model in any way.

Referring to fig. 1, the speed reducer press-fitting device of the present embodiment is provided with a support plate 10, a positioning plate 20, a pressing head mechanism 30 and a limiting pin 40, wherein, the support plate 10 supports a housing 100, the positioning plate 20 positions a bearing outer ring and the positioning pin 300, when the press-fitting is performed, the pressing head mechanism 30 is controlled to move downwards to press-fit the bearing outer ring and an oil seal 400, the limiting pin 40 is controlled to move downwards to press-fit the positioning pin 300, and the limiting pin 40 is used to limit the displacement of the pressing head mechanism 30 moving downwards. The speed reducer press-fitting device of the embodiment realizes synchronous press-fitting of the bearing outer ring, the oil seal 400 and the positioning pin 300, and has high press-fitting efficiency, accurate positioning and simple and convenient operation.

In the embodiment shown in fig. 1, the bearing outer ring includes a first bearing outer ring 201 and a second bearing outer ring 202, and the ram mechanism 30 may press-fit the first bearing outer ring 201 and the second bearing outer ring 202 at the same time, where the outer diameters of the first bearing outer ring 201 and the second bearing outer ring 202 may be equal or unequal. When the outer diameters of the first bearing outer ring 201 and the second bearing outer ring 202 are not equal, the press fitting forces of the press mechanism 30 on the first bearing outer ring 201 and the second bearing outer ring 202 can be the same or different, so that the press fitting requirements of different bearing outer rings can be met. In this embodiment, the first bearing outer race 201 and the second bearing outer race 202 have different outer diameters, and the press-fitting force of the ram mechanism 30 to the first bearing outer race 201 and the second bearing outer race 202 is different.

As shown in fig. 1, the support plate 10 is used for supporting a housing 100, which is a plate-like body matching the outer shape of the housing 100, and the support plate 10 of the present embodiment is a rectangular plate-like body. Specifically, as shown in fig. 2, the support plate 10 is provided with a first support column 11, a second support column 12, a third support column 13, and a positioning column 14. In the embodiment shown in fig. 2, the number of the first supporting columns 11 is two, and the first supporting columns are respectively arranged on the supporting plate 10 at positions corresponding to two ends of the housing 100 and are used for supporting the two ends of the housing 100. Of course, the number of the first supporting columns 11 may be set according to actual needs, and is not limited herein. The second support column 12 is provided on the support plate 10 at a position corresponding to the first bearing outer race 201 on the housing 100, for supporting the bottom of the housing 100. The third support column 13 is provided on the support plate 10 at a position corresponding to the second bearing outer race on the housing 100 for the bottom of the housing 100. In some embodiments, a rubber gasket 15 is provided on the upper end surface of the third support column 13 to ensure that the non-processing surface of the housing 100 is buffered during the press-fitting process of the press-head mechanism 30, thereby protecting the non-processing surface of the housing 100 and improving the press-fitting safety. The positioning columns 14 are disposed on the support plate 10 at positions corresponding to the sides of the housing for positioning the support plate 10 and the housing 100, in this embodiment, the number of the positioning columns 14 is two, and the two positioning columns 14 are disposed at intervals on the sides of the housing 10.

As shown in fig. 1 and 2, the positioning plate 20 is a triangular plate-like body for positioning the bearing outer race and the positioning pin 300. The positioning plate 20 is provided with a positioning hole 21, a positioning seat 22 and an integrated positioning pin 23. Wherein, the locating hole 21 is used for locating the bearing outer lane, and the positioning seat 22 is used for locating the locating pin 300. Specifically, as shown in fig. 2, the positioning hole 21 includes a first positioning hole 211 corresponding to the first bearing outer ring 201 and a second positioning hole 212 corresponding to the second bearing outer ring 202, wherein the shapes and sizes of the first positioning hole 211 and the second positioning hole 212 are determined according to the shape of the housing 100 at the position of the bearing outer ring, so as to ensure reliable installation of the bearing outer ring and the housing 100. The positioning seats 22 are provided at both corners of the positioning plate 20 for positioning the positioning pins 300. The integrated positioning pin 23 is disposed on the side of the positioning plate 20 away from the positioning seat 22, and is used for positioning the housing 100 and the positioning plate 20.

As shown in fig. 1 and 2, the ram mechanism 30 includes a first ram assembly 31 and a second ram assembly 32, wherein the first ram assembly 31 is used for press-fitting the first bearing outer ring 201, and the second ram assembly 32 is used for press-fitting the second bearing outer ring 202. Specifically, as shown in fig. 2 and 3, the first ram assembly 31 includes a first guide cylinder 311, a first ram 312, and a first spring 313, where the first guide cylinder 311 is a hollow cylinder for accommodating the first spring 313. A first flange 3111 extending downward is provided at the bottom of the first guide cylinder 311, and the outer diameter of the first flange 3111 is matched to the inner diameter of the first bearing outer race 201, so that the first flange 3111 passes through the first bearing outer race 201, and a press-fitting force is applied to the first bearing outer race 201 through the top of the first flange 3111. A second flange 3112 extending downward is provided at the bottom of the first flange 3111, and the outer diameter of the second flange 3112 is smaller than that of the first flange 3111, and the second flange 3112 is used for press-fitting the oil seal 400. At the time of press fitting, the oil seal 400 is fitted to the outer periphery of the second flange 3112, and a press fitting force is applied to the oil seal 400 through the top of the second flange 3112. A first air hole 3113 is provided on a sidewall of the first guide cylinder 311, which ensures that a closed cavity is not formed between the first bearing outer ring 201, the oil seal 400, and the housing 100 at the time of press-fitting, so that press-fitting errors can be reduced. The first presser 312 has a hollow cylindrical shape, and a third flange 3121 is provided at the bottom of the first presser 312 to be in contact with the first spring 313. The first spring 313 is installed in the first guide cylinder 311, and when a downward press-fitting force is applied to the first press head 312, the third flange 3121 of the first press head 312 applies a downward force to the first spring 313 to compress the first spring 313, and at the same time, the first spring 313 transfers the force to the first guide cylinder 311 to move the first guide cylinder 311 downward, and the top of the first flange 3111 of the first guide cylinder 311 applies a press-fitting force to the first bearing outer ring 201, thereby press-fitting the first bearing outer ring 201. Meanwhile, the top of the second flange 3112 of the first guide cylinder 311 applies a press-fitting force to the oil seal 400, thereby press-fitting the oil seal 400. In this embodiment, the first spring 313 is a rectangular spring, which has a high elastic coefficient and can adapt to a wide range of press-fitting forces.

In some embodiments, as shown in fig. 2 and 3, a first threaded hole 3122 is provided on the first press head 312, and a first slotted screw 3123 matched with the first threaded hole 3122 is provided in the first threaded hole 3122, wherein an end of the first slotted screw 3123 is accommodated in the first air hole 3113, the first press head 312 is connected with the first guide cylinder 311 through the first slotted screw 3123 into an integral structure, and the press mounting efficiency is improved without reinstallation during subsequent press mounting. As shown in fig. 1, the first air hole 3113 is a bar-shaped hole, and when the first ram 312 moves downward, the first slotted screw 3123 moves along the lower side of the first air hole 3113, so as to ensure that the first ram 312 is connected with the first guide cylinder 311, and meanwhile, the press fitting of the first guide cylinder 311 to the first bearing outer ring 201 and the oil seal 400 is not affected.

As shown in fig. 1, 2 and 4, the second ram assembly 32 includes a second guide cylinder 321, a second ram 322 and a second spring 323, where the second guide cylinder 321 is an open-ended cylinder for accommodating the second spring 323. A through hole 3211 is formed at the bottom of the second guide cylinder 321, and a second air hole 3212 is formed at the sidewall of the second guide cylinder 321, which ensures that a closed cavity is not formed between the second bearing outer race 202 and the housing 100 during press-fitting, thereby reducing press-fitting errors. The second ram 322 has a hollow cylindrical shape, and a fourth flange 3221 abutting against the second spring 323 is provided at the bottom of the second ram 322. The second spring 323 is installed in the second guide cylinder 321, and when a downward press-fitting force is applied to the second press head 322, the fourth flange 3221 of the second press head 322 applies a downward force to the second spring 323 to compress the second spring 323, and at the same time, the second spring 323 transmits the force to the second guide cylinder 321 to move the second guide cylinder 321 downward, and the bottom of the second guide cylinder 321 applies a press-fitting force to the second bearing outer ring 202, thereby press-fitting the second bearing outer ring 202. In this embodiment, the second spring 323 is a rectangular spring, which has a high elastic coefficient and can adapt to a large range of press-fitting force.

In some embodiments, as shown in fig. 2 and 4, a second threaded hole 3222 is provided on the second pressing head 322, a second slotted screw 3223 matched with the second threaded hole 3222 is provided in the second threaded hole 3222, wherein an end portion of the second slotted screw 3223 is accommodated in the second air hole 3212, the second pressing head 322 is connected with the second guiding cylinder 321 through the second slotted screw 3223 into an integral structure, and reinstallation is not needed during subsequent press mounting, so that the press mounting efficiency is improved. As shown in fig. 1, the second air holes 3212 are bar-shaped holes, and when the second pressing head 322 moves downward, the second slotted screws 3223 move along the lower side of the second air holes 3212, so that the second pressing head 322 is connected with the second guide cylinder 321, and meanwhile, the second guide cylinder 321 is not affected to press the second bearing outer ring 202.

As shown in fig. 2, 3 and 4, by setting the lengths of the first ram 312 and the second ram 322 in the vertical direction to different lengths, when the pressing force is applied to the first ram 312 and the second ram 322 at the same time, the compression lengths of the first spring 312 and the second spring 322 are different, so that different pressing forces can be applied to the first bearing outer ring 201 and the second bearing outer ring 202, the pressing is more accurate, and the problem that the bearing outer ring is not pressed in place due to the damage of the oil seal caused by the excessive pressing force and the too small pressing force can be avoided.

As shown in fig. 1 and 2, the limiting pin 40 is cylindrical, and a limiting post 41 is disposed at the lower end of the limiting pin, and the limiting post 41 is disposed in a positioning hole of the positioning seat 22 for press-fitting the positioning pin 300. In some embodiments, as shown in fig. 3, by setting the length of the limiting post 41, the stroke of the first pressing head 312 and the second pressing head 322 can be controlled to move downwards, so as to limit the pressing head mechanism 30, and further improve the accuracy of press fitting.

As shown in fig. 2, 3 and 4, the working process of the press-fitting device of the speed reducer of the present utility model is as follows: the housing 100 is placed on the support plate 10 and positioned by the positioning posts 14, then the positioning plate 20 is placed on the housing 100 and positioned by the integrated positioning pin 23, then the first bearing outer ring 201 is placed in the first positioning hole 211, the second bearing outer ring 202 is placed in the second positioning hole 212, and the positioning pin 300 is placed in the positioning hole in the positioning seat 22. The first ram assembly 31 is obtained by placing the first spring 313 in the first guide cylinder 311, placing the first ram 312 in the first guide cylinder 311, screwing the first slotted screw 3123 into the first threaded hole 3122, and then placing the oil seal 400 into the outer circumference of the second flange 3112 of the first guide cylinder 311. At the same time, the second spring 323 is placed in the second guide cylinder 321, the second ram 322 is placed in the second guide cylinder 321, and the second slotted screw 3223 is screwed into the second threaded hole 3222, thereby obtaining the second ram assembly 32. The assembled first ram assembly 31 is placed in the first locating hole 211 and the second ram assembly 32 is placed in the second locating hole 212. During press fitting, the press fitting forces of the first bearing outer ring, the second bearing outer ring, the oil seal and the positioning pin are calculated, the required spring force is calculated according to the spring stiffness coefficients of the first spring 312 and the second spring 322, the compression lengths of the first spring 312 and the second spring 322 are calculated, and corresponding pressures are applied to the first pressure head 312, the second pressure head 322 and the positioning pin 40 according to the calculation results, so that accurate press fitting of the first bearing outer ring, the second bearing outer ring, the oil seal and the positioning pin is realized.

Therefore, the bearing outer ring and the positioning pin 300 are positioned through the positioning plate 20 by supporting the shell 100 through the supporting plate 10, the pressing head mechanism 30 is controlled to move downwards to press the bearing outer ring and the oil seal 400 during pressing, the limiting pin 40 is controlled to move downwards to press the positioning pin 300, and the displacement of the pressing head mechanism 30 moving downwards is limited through the limiting pin 40, so that the synchronous pressing of the bearing outer ring, the oil seal 400 and the positioning pin 300 is realized, the pressing efficiency is high, and the positioning is accurate and the operation is simple and convenient. On the other hand, by providing the displacement of the downward movement of the first press-fit assembly 31 and the second press-fit assembly 32 different, different press-fit forces for the bearing outer race and the oil seal 400 can be achieved to avoid the oil seal from being damaged. In addition, the utility model has the characteristics of simple structure, high safety and the like, and can adapt to press-fit forces of different specifications.

Although the present utility model has been disclosed by the above embodiments, the scope of the present utility model is not limited thereto, and modifications, substitutions, etc. made to the above components will fall within the scope of the claims of the present utility model without departing from the spirit of the present utility model.

Claims (10)

1. The device is characterized in that the device is provided with a supporting plate (10) for supporting a shell (100), a positioning plate (20) for positioning a bearing outer ring and a positioning pin (300), a pressing head mechanism (30) and a limiting pin (40), wherein the positioning plate (20) is arranged above the supporting plate (10), a positioning hole (21) and a positioning seat (22) are formed in the positioning plate (20), the shell (100) is arranged between the supporting plate (10) and the positioning plate (20) during pressing, the bearing outer ring is arranged in the positioning hole (21), the positioning pin (300) is arranged in the positioning seat (22), an oil seal (400) is arranged at the lower part of the pressing head mechanism (30), then the lower end of the pressing head mechanism (30) is arranged in the positioning hole (21), the lower end of the limiting pin (40) is arranged in the positioning seat (22), and meanwhile, the pressing head mechanism (30) is controlled to move downwards so as to press the outer ring and the oil seal (400) and control the pressing head mechanism (40) to move downwards so as to limit the displacement of the pressing head mechanism (40) to the limiting pin (40).

2. The reducer press-fitting device according to claim 1, wherein the press-fitting mechanism (30) includes a first press-fitting head assembly (31) for press-fitting the first bearing outer race (201) and a second press-fitting head assembly (32) for press-fitting the second bearing outer race (202), and the first press-fitting head assembly (31) and the second press-fitting head assembly (32) are controlled to move downward with the same or different displacement of the first press-fitting head assembly (31) from the second press-fitting head assembly (32) to move downward.

3. The reduction press-fitting device according to claim 2, wherein the support plate (10) is a plate-like body matching the outer shape of the housing (100), a first support column (11), a second support column (12), a third support column (13) and a positioning column (14) for positioning the housing (100) are provided on the support plate (10), the first support column (11) is provided on the support plate (10) at positions corresponding to both ends of the housing (100), the second support column (12) is provided on the support plate (10) at positions corresponding to the first bearing outer ring on the housing (100), the third support column (13) is provided on the support plate (10) at positions corresponding to the second bearing outer ring on the housing (100), the positioning column (14) is provided on the support plate (10) at positions corresponding to the housing side, and a rubber gasket (15) is provided on the upper end surface of the third support column (13).

4. The speed reducer press-fitting device according to claim 2, wherein the positioning plate (20) is a triangular plate-shaped body, the positioning hole (21) comprises a first positioning hole (211) corresponding to the first bearing outer ring (201) and a second positioning hole (212) corresponding to the second bearing outer ring (202), the positioning plate (20) is provided with an integrated positioning pin (23), and the integrated positioning pin (23) is located on one side of the positioning plate (20) away from the positioning seat (22).

5. The reducer press-fitting device according to claim 2, wherein the first press-head assembly (31) comprises a first guide cylinder (311), a first press head (312) and a first spring (313), the first spring (313) is arranged in the first guide cylinder (311), the bottom end of the first press block (312) is abutted with the first spring (313), and the oil seal (400) is sleeved at the end part of the first guide cylinder (311).

6. The reducer press-fit device according to claim 5, wherein the first guide cylinder (311) is a hollow cylinder, a first flange (3111) extending downward is provided at the bottom of the first guide cylinder (311), a second flange (3112) extending downward is provided at the bottom of the first flange (3111), the outer diameter of the second flange (3112) is smaller than the outer diameter of the first flange (3111), a first air hole (3113) is provided at the side wall of the first guide cylinder (311), the first pressure head (312) is a hollow cylinder, a third flange (3121) abutting against the first spring (313) is provided at the bottom of the first pressure head (312), and the first spring (313) is a rectangular spring.

7. The speed reducer press-fitting device according to claim 6, wherein the first press-head (312) is provided with a first threaded hole (3122), a first slotted screw (3123) matched with the first threaded hole (3122) is arranged in the first threaded hole, an end portion of the first slotted screw (3123) is accommodated in the first air hole (3113), and the first press-head (312) is connected with the first guide cylinder (311) into an integral structure through the first slotted screw (3123).

8. The reducer press-fitting device according to claim 2, wherein the second press-head assembly (32) comprises a second guide cylinder (321), a second press-head (322) and a second spring (323), the second spring (323) is arranged in the second guide cylinder (321), and the bottom end of the second press-head (322) is abutted with the second spring (323).

9. The speed reducer press-fitting device according to claim 8, wherein the second guide cylinder (321) is a cylinder body with one end open, a through hole (3211) is formed in the bottom of the second guide cylinder (321), a second air hole (3212) is formed in the side wall of the second guide cylinder (321), the second pressing head (322) is a hollow cylinder body, a fourth flange (3221) abutting against the second spring (323) is formed in the bottom of the second pressing head (322), and the second spring (323) is a rectangular spring.

10. The speed reducer press-fitting device as claimed in claim 9, wherein a second threaded hole (3222) is formed in the second press head (322), a second slotted screw (3223) matched with the second threaded hole (3222) is arranged in the second threaded hole, the end portion of the second slotted screw (3223) is accommodated in the second air hole (3212), and the second press head (322) is connected with the second guide cylinder (321) into an integral structure through the second slotted screw (3223).