Device and method for press fitting of driving gear and motor

Abstract

The invention provides a device and a method for press fitting of a driving gear and a motor. The device comprises a motor positioning device and a hydraulic oil cylinder conveying device, a plurality of motors are arranged on the motor positioning device, the hydraulic oil cylinder conveying device comprises a moving mechanism and a height adjusting mechanism, a hydraulic oil cylinder provided with a threaded rod in a penetrating mode is installed on the height adjusting mechanism, and the height adjusting mechanism is installed on the moving mechanism. The moving mechanism is used for achieving transverse movement and longitudinal movement of the hydraulic oil cylinder, and the height adjusting mechanism is used for achieving lifting of the hydraulic oil cylinder. The defects that in the press fitting process, a hydraulic oil cylinder is inconvenient to carry, the labor intensity of personnel carrying is large, and the danger is high are overcome, the personnel use cost is reduced, the production takt is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor gear assembly, and in particular to a device and method for press-fitting a driving gear and a motor. Background Art

[0002] The motor is the power source for the locomotive. The motor converts electrical energy into torque and transmits it to the wheels through the motor shaft, driving gear, driven gear, and axle in sequence, so that the locomotive can move forward. The driving gear and the motor shaft are connected by interference fit. The existing assembly method is to press-fit through a hydraulic cylinder. Since two people are required to cooperate in installing the hydraulic cylinder, after the driving gear is pressed, two people are required to disassemble the hydraulic cylinder and install it on the next motor, which greatly increases the labor intensity and the work efficiency is not high.

[0003] Current methods for pressing active gears (such as Figure 1 As shown): First, insert the driving gear into the motor shaft. One operator carries the hydraulic cylinder to make the left end face of the cylinder close to the right end face of the driving gear. At the same time, another operator inserts the screw assembly (including the retaining sleeve) into the hydraulic cylinder until it is inserted into the motor shaft, and uses a wrench to securely fasten the screw and the motor shaft through the regular hexagonal structure at the right end, ensuring that the left end face of the screw is in close contact with the right end face of the center hole of the motor shaft. Connect the high-pressure oil pipe to the right end of the screw, and the tooling installation is now complete. When pressing the driving gear, turn on the high-pressure oil pump to inject high-pressure oil from the right end of the screw, enter the motor shaft through the central oil channel of the screw, and then enter the joint surface of the motor shaft and the driving gear through the motor shaft oil channel, so that the inner hole of the driving gear expands slightly. At this time, turn on the hydraulic cylinder to push the retaining sleeve, so that the hydraulic cylinder generates a thrust to the left, and press the driving gear to the left onto the motor shaft.

[0004] During the installation process of the existing active gear press tooling, an operator is required to continuously lift the heavy hydraulic cylinder until the screw and the motor shaft are installed. After the active gear is pressed, the hydraulic cylinder needs to be manually moved to the next station when the next active gear assembly task is performed. According to the current production rhythm, the above work needs to be repeated 12 times a day, which greatly increases the labor intensity of the operator and also has the risk of the hydraulic cylinder hitting the foot. When the screw is manually inserted into the motor shaft, it is not easy to align it with the motor shaft hole because the screw is a slender rod, and it usually requires repeated attempts. Since the existing active gear press process is produced in an isolated station, during continuous operation, the tooling is manually moved, and the production efficiency is low. Therefore, it is urgent to develop a method for pressing the active gear and the motor to improve the labor productivity of the active gear press and reduce the number of operators. Summary of the invention

[0005] According to the above-mentioned technical problems that the existing pressing of driving gears has high labor intensity, inconvenient screw installation and low production efficiency, a device and method for pressing driving gears and motors are provided.

[0006] The technical means adopted by the present invention are as follows:

[0007] A device for press-fitting a driving gear and a motor comprises: a motor positioning device and a hydraulic cylinder conveying device, a plurality of motors are arranged on the motor positioning device, the hydraulic cylinder conveying device comprises a moving mechanism and a height adjustment mechanism, a hydraulic cylinder with a screw inserted therein is installed on the height adjustment mechanism, the height adjustment mechanism is installed on the moving mechanism, the moving mechanism is used to realize the lateral movement and longitudinal movement of the hydraulic cylinder, and the height adjustment mechanism is used to realize the lifting and lowering of the hydraulic cylinder.

[0008] Furthermore, the motor shafts of the multiple motors are arranged in parallel and are all parallel to the axis of the hydraulic cylinder; and the motor shafts of the multiple motors are located on the same side.

[0009] Furthermore, the motor positioning device includes a plurality of positioning blocks and a positioning tool base plate, and a plurality of groups of positioning blocks are installed on the positioning tool base plate, each group having a plurality of positioning blocks, and positioning of a motor is achieved by each group of multiple positioning blocks, and the positioning blocks have an inclined surface.

[0010] Furthermore, the moving mechanism comprises an X-axis moving mechanism and a Y-axis moving mechanism, the height adjustment mechanism is installed on the X-axis moving mechanism, and the X-axis moving mechanism is slidably connected to the Y-axis moving mechanism.

[0011] Furthermore, the X-axis moving mechanism includes an X-axis guide rail and an X-axis slide, the height adjustment mechanism is installed on the X-axis slide, the X-axis slide is slidably connected to the X-axis guide rail, and the X-axis guide rail is installed on the Y-axis slide of the Y-axis moving mechanism.

[0012] Furthermore, the Y-axis moving mechanism includes a press-fitting tooling base plate, a Y-axis slideway and a Y-axis slide table, the Y-axis slideway is installed on the press-fitting tooling base plate, and the Y-axis slide table is slidably connected to the Y-axis slideway.

[0013] Furthermore, the height adjustment mechanism includes a height adjustment handwheel, a plurality of guide rods, a hydraulic cylinder support platform and a screw rod, the bottoms of the plurality of guide rods are installed on the X-axis slide of the moving mechanism, the hydraulic cylinder support platform is slidably connected above the plurality of guide rods, the hydraulic cylinder is installed on the hydraulic cylinder support platform, the height adjustment handwheel is connected to the bottom of the screw rod, the hydraulic cylinder support platform is connected to the top of the screw rod, a cross plate is connected to the middle of the plurality of guide rods, and the screw rod is connected through the cross plate.

[0014] Furthermore, a hydraulic cylinder positioning tool is installed on the hydraulic cylinder support platform for positioning the hydraulic cylinder.

[0015] The present invention also provides a press-fitting method of a device for press-fitting a driving gear and a motor, comprising the following steps:

[0016] Step 1: First, automatically align and position multiple motors through the inclined surface of the positioning block, so that the motor shaft axes of the multiple motors are parallel to the hydraulic cylinder axis, and pre-assemble the prepared driving gears onto the motor shafts;

[0017] Step 2: Move the hydraulic cylinder to the position of the motor where the driving gear needs to be pressed and align it through the Y-axis slide and the Y-axis slide, move the hydraulic cylinder toward the motor through the X-axis guide and the X-axis slide, and make the end face of the hydraulic cylinder close to the driving gear that needs to be pressed, rotate the height adjustment hand wheel to adjust the height of the hydraulic cylinder, so that the axis of the hydraulic cylinder coincides with the axis of the motor shaft, and then the positioning is completed, and then the driving gear is pressed;

[0018] Step 3: The operator screws the screw on the hydraulic cylinder into the motor shaft, and uses a wrench to tighten the screw and the motor shaft securely through the regular hexagonal structure at the right end, ensuring that the left end face of the screw is in close contact with the right end face of the center hole of the motor shaft; connect the high-pressure oil pipe to the right end of the screw, and the tooling installation is now complete; when pressing the driving gear, turn on the high-pressure oil pump to inject high-pressure oil from the right end of the screw, enter the motor shaft through the central oil channel of the screw, and then enter the joint surface of the motor shaft and the driving gear through the motor shaft oil channel, so that the inner hole of the driving gear expands slightly. At this time, turn on the hydraulic cylinder to push the stopper sleeve, so that the hydraulic cylinder generates a left thrust, and press the driving gear to the left onto the motor shaft;

[0019] Step 4: After the motor is pressed, move the hydraulic cylinder to the next station through the Y-axis slide to continue pressing the remaining motors.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The present invention transforms the inherent independent production concept into a production line concept, thus filling the technical gap of the pressing of driving gears and motors.

[0022] 2. The combined structure of the press-fitting tooling base plate, Y-axis slideway and Y-axis slide table of the present invention solves the problems of inconvenient transportation of hydraulic cylinders, high labor intensity and high risk of personnel transportation during the press-fitting process. The hydraulic cylinder can be easily transported between different workpieces, and the active gear press-fitting process can be reduced from the original two-person operation to one-person operation, thereby reducing the personnel use cost.

[0023] 3. The application of the present invention optimizes the layout of the active gear production line, saves the auxiliary transportation time between different stations, reduces the production cycle, and thus improves production efficiency.

[0024] 4. The combined structure of the X-axis guide rail, X-axis slide, height adjustment hand wheel, guide rod, hydraulic cylinder support platform, and hydraulic cylinder positioning tooling of the present invention can realize flexible adjustment in the X direction and the Z direction. The assembly of the hydraulic cylinder and the motor can be easily completed by one person, avoiding the continuous lifting of the hydraulic cylinder by personnel, reducing the labor intensity of manual personnel, and reducing the danger. At the same time, the process is reduced from 2 people to 1 person.

[0025] Based on the above reasons, the present invention can be widely promoted in the fields of motor gear assembly and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 It is a schematic diagram of the existing method for pressing the driving gear.

[0028] Figure 2 It is a front view of the motor positioning device and the hydraulic cylinder conveying device of the present invention.

[0029] Figure 3 It is a top view of the motor positioning device and the hydraulic cylinder conveying device of the present invention.

[0030] In the figure: 1. Motor; 2. Positioning block; 3. Positioning tooling base plate; 4. Press-fitting tooling base plate; 5. Y-axis slideway; 6. Y-axis slide; 7. X-axis guide rail; 8. X-axis slide; 9. Height adjustment handwheel; 10. Guide rod; 11. Hydraulic cylinder support platform; 12. Hydraulic cylinder positioning tooling; 13. Screw. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0035] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0036] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0037] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0038] Example 1

[0039] The present invention provides a device for pressing a driving gear and a motor, comprising: a motor positioning device and a hydraulic cylinder conveying device, a plurality of motors 1 are arranged on the motor positioning device, the hydraulic cylinder conveying device comprises a moving mechanism and a height adjustment mechanism, the hydraulic cylinder is installed on the height adjustment mechanism, the height adjustment mechanism is installed on the moving mechanism, the moving mechanism is used to realize the lateral movement and longitudinal movement of the hydraulic cylinder, and the height adjustment mechanism is used to realize the lifting and lowering of the hydraulic cylinder.

[0040] Preferably, the motor shafts of the multiple motors 1 are arranged in parallel and are all parallel to the axis of the hydraulic cylinder; the motor shafts of the multiple motors 1 are located on the same side.

[0041] Preferably, the motor positioning device includes a plurality of positioning blocks 2 and a positioning tool base plate 3, and a plurality of groups of positioning blocks 2 are installed on the positioning tool base plate 3, each group having a plurality of positioning blocks 2, and positioning of a motor 1 is achieved by each group of multiple positioning blocks 2, and the positioning blocks 2 have an inclined surface.

[0042] Preferably, the moving mechanism includes an X-axis moving mechanism and a Y-axis moving mechanism, the height adjustment mechanism is installed on the X-axis moving mechanism, and the X-axis moving mechanism is slidably connected to the Y-axis moving mechanism. The X-axis moving mechanism includes an X-axis guide rail 7 and an X-axis slide 8, the height adjustment mechanism is installed on the X-axis slide 8, the X-axis slide 8 is slidably connected to the X-axis guide rail 7, and the X-axis guide rail 7 is installed on the Y-axis slide 6 of the Y-axis moving mechanism. The Y-axis moving mechanism includes a press-fitting tool base plate 4, a Y-axis slide 5 and a Y-axis slide 6, the Y-axis slide 5 is installed on the press-fitting tool base plate 4, and the Y-axis slide 6 is slidably connected to the Y-axis slide 5. The height adjustment mechanism includes a height adjustment handwheel 9, multiple guide rods 10, a hydraulic cylinder support platform 11 and a screw rod. The bottoms of the multiple guide rods 10 are installed on the X-axis slide 8 of the moving mechanism. The hydraulic cylinder support platform 11 is slidably connected above the multiple guide rods 10. The hydraulic cylinder is installed on the hydraulic cylinder support platform 11. The height adjustment handwheel 9 is connected to the bottom of the screw rod, the hydraulic cylinder support platform 11 is connected to the top of the screw rod, and a cross plate is connected to the middle of the multiple guide rods 10, and the screw rod is connected to the cross plate through.

[0043] Preferably, a hydraulic cylinder positioning tool 12 is installed on the hydraulic cylinder support platform 11 for positioning the hydraulic cylinder.

[0044] Example 2

[0045] In order to solve the problems of high labor intensity, inconvenient screw installation and low production efficiency during the existing pressing of the driving gear, the present invention provides a device and method for pressing the driving gear and the motor, and the main problems solved are as follows:

[0046] (1) A motor positioning device is configured to pre-position the motor simply and quickly before the driving gear is pressed.

[0047] (2) A set of hydraulic cylinder conveying device is configured to facilitate and quickly install the active gear press fitting, and can also be quickly moved to the next station through the guide rail.

[0048] The specific scheme of the device for press-fitting a driving gear and a motor of the present invention is as follows:

[0049] 1. Develop a motor positioning device and a hydraulic cylinder conveying device (such as Figure 2 , Figure 3 As shown in FIG. 1 , the motor positioning device is composed of a plurality of positioning blocks 2 and a positioning tool base plate 3, wherein six groups of positioning blocks 2 are installed on the positioning tool base plate 3, and the positioning of six motors 1 can be completed. The six motors 1 are arranged in a row and in parallel on the positioning tool base plate 3, and the motor shafts of the six motors 1 are parallel and located on the same side. Each group has at least four positioning blocks 2, which are distributed at the four corners of the motor 1.

[0050] 2. The hydraulic cylinder conveying device is composed of a press-fitting tooling base plate 4, a Y-axis slideway 5, a Y-axis slide 6, an X-axis guide rail 7, an X-axis slide 8, a height adjustment handwheel 9, a guide rod 10, a hydraulic cylinder support platform 11, and a hydraulic cylinder positioning tooling 12. Among them, the Y-axis slideway 5 and the Y-axis slide 6 can make the hydraulic cylinder move between the 6 motor-driving gear platforms, the X-axis guide rail 7 and the X-axis slide 8 can make the hydraulic cylinder move closer to and away from the motor 1, the height adjustment handwheel 9 is connected to the screw rod, and the height of the top of the screw rod changes by rotating the height adjustment handwheel 9, and the guide rod 10 is used to make the hydraulic cylinder support platform 11 move up and down, which is convenient for height adjustment. The hydraulic cylinder positioning tooling 12 is installed on the hydraulic cylinder support platform 11, and the hydraulic cylinder is placed in the hydraulic cylinder positioning tooling 12. Since the hydraulic cylinder positioning tooling 12 is an arc structure, it can fit well with the outer wall of the hydraulic cylinder to complete the positioning of the hydraulic cylinder. A screw rod is inserted into the hydraulic cylinder.

[0051] Example 3

[0052] The present invention also provides a method for press-fitting a driving gear and a motor. Using the above device, the following steps are performed (with Figure 2 , Figure 3 Take this as an example):

[0053] 1) The use process is as follows: first, the six motors 1 are respectively passed through the inclined guide structure of the positioning block 2, so that the motors 1 are automatically aligned and positioned due to gravity during the placement process, so that the axes of the six motor shafts are parallel to the axis of the hydraulic cylinder; the prepared driving gears are pre-assembled onto the motor shafts;

[0054] 2) Manually move the hydraulic cylinder to the position of the motor where the driving gear needs to be pressed and align it through the Y-axis slide 5 and the Y-axis slide 6, move the hydraulic cylinder toward the motor 1 through the X-axis guide 7 and the X-axis slide 8, and make the end face of the hydraulic cylinder abut against the driving gear that needs to be pressed, rotate the height adjustment handwheel 9 to adjust the height of the hydraulic cylinder so that the axis of the hydraulic cylinder coincides with the axis of the motor shaft. At this time, the positioning is completed, and the subsequent steps are similar to the conventional driving gear press-fitting process.

[0055] 3) The operator screws the screw 13 on the hydraulic cylinder into the motor shaft, and uses a wrench to securely fasten the screw 13 and the motor shaft through the regular hexagonal structure at the right end, ensuring that the left end face of the screw 13 is in close contact with the right end face of the center hole of the motor shaft. Connect the high-pressure oil pipe to the right end of the screw 13, and the tooling installation is now complete. When pressing the driving gear, turn on the high-pressure oil pump to allow high-pressure oil to be injected from the right end of the screw 13, enter the motor shaft through the central oil channel of the screw 13, and then enter the joint surface of the motor shaft and the driving gear through the motor shaft oil channel, so that the inner hole of the driving gear expands slightly. At this time, turn on the hydraulic cylinder to push the stopper sleeve, so that the hydraulic cylinder generates a thrust to the left, and press the driving gear to the left onto the motor shaft.

[0056] 4) After the press-fitting of the motor 1 is completed, the hydraulic cylinder is moved to the next station through the Y-axis slide 5 to continue the press-fitting of the remaining motors 1.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for press-fitting a driving gear and a motor, characterized in that: include: A motor positioning device and a hydraulic cylinder conveying device, wherein a plurality of motors (1) are arranged on the motor positioning device, the hydraulic cylinder conveying device comprises a moving mechanism and a height adjustment mechanism, a hydraulic cylinder with a screw (13) inserted therein is mounted on the height adjustment mechanism, the height adjustment mechanism is mounted on the moving mechanism, the moving mechanism is used to realize the lateral and longitudinal movement of the hydraulic cylinder, and the height adjustment mechanism is used to realize the lifting and lowering of the hydraulic cylinder.

2. The device for press-fitting the driving gear and the motor according to claim 1, characterized in that: The motor shafts of the multiple motors (1) are arranged in parallel and are all parallel to the axis of the hydraulic cylinder; the motor shafts of the multiple motors (1) are located on the same side.

3. The device for press-fitting the driving gear and the motor according to claim 1, characterized in that: The motor positioning device comprises a plurality of positioning blocks (2) and a positioning tool base plate (3); a plurality of groups of positioning blocks (2) are mounted on the positioning tool base plate (3); each group comprises a plurality of positioning blocks (2); and positioning of a motor (1) is achieved by means of each group of the plurality of positioning blocks (2); the positioning blocks (2) have an inclined surface.

4. The device for press-fitting the driving gear and the motor according to claim 1, characterized in that: The moving mechanism comprises an X-axis moving mechanism and a Y-axis moving mechanism, the height adjustment mechanism is installed on the X-axis moving mechanism, and the X-axis moving mechanism is slidably connected to the Y-axis moving mechanism.

5. The device for press-fitting the driving gear and the motor according to claim 4, characterized in that: The X-axis moving mechanism comprises an X-axis guide rail (7) and an X-axis slide table (8), the height adjustment mechanism is mounted on the X-axis slide table (8), the X-axis slide table (8) is slidably connected to the X-axis guide rail (7), and the X-axis guide rail (7) is mounted on the Y-axis slide table (6) of the Y-axis moving mechanism.

6. The device for press-fitting the driving gear and the motor according to claim 4, characterized in that: The Y-axis moving mechanism comprises a press-fitting tool base plate (4), a Y-axis slideway (5) and a Y-axis slide table (6); the Y-axis slideway (5) is installed on the press-fitting tool base plate (4), and the Y-axis slide table (6) is slidably connected to the Y-axis slideway (5).

7. The device for press-fitting the driving gear and the motor according to claim 1, characterized in that: The height adjustment mechanism comprises a height adjustment hand wheel (9), a plurality of guide rods (10), a hydraulic cylinder support platform (11) and a screw rod, wherein the bottoms of the plurality of guide rods (10) are mounted on an X-axis slide table (8) of a moving mechanism, the hydraulic cylinder support platform (11) is slidably connected above the plurality of guide rods (10), the hydraulic cylinder is mounted on the hydraulic cylinder support platform (11), the height adjustment hand wheel (9) is connected to the bottom of the screw rod, the hydraulic cylinder support platform (11) is connected to the top of the screw rod, a cross plate is connected to the middle of the plurality of guide rods (10), and the screw rod is connected through the cross plate.

8. The device for press-fitting the driving gear and the motor according to claim 7, characterized in that: A hydraulic cylinder positioning tool (12) is installed on the hydraulic cylinder support platform (11) for positioning the hydraulic cylinder.

9. A method for press-fitting a driving gear and a motor according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: First, the plurality of motors (1) are automatically aligned and positioned through the inclined surface of the positioning block (2), so that the motor shaft axes of the plurality of motors (1) are parallel to the hydraulic cylinder axis, and the prepared driving gears are pre-assembled onto the motor shafts; Step 2: Move the hydraulic cylinder to the position of the motor where the driving gear needs to be pressed and align it through the Y-axis slideway (5) and the Y-axis slide table (6); move the hydraulic cylinder toward the motor (1) through the X-axis guide rail (7) and the X-axis slide table (8); and make the end face of the hydraulic cylinder abut against the driving gear that needs to be pressed; rotate the height adjustment hand wheel (9) to adjust the height of the hydraulic cylinder so that the axis of the hydraulic cylinder coincides with the axis of the motor shaft. At this time, positioning is completed, and then the driving gear is pressed; Step 3: The operator screws the screw rod (13) on the hydraulic oil cylinder into the motor shaft, and uses a wrench to firmly tighten the screw rod (13) and the motor shaft through the regular hexagonal structure at the right end, ensuring that the left end face of the screw rod (13) is in close contact with the right end face of the center hole of the motor shaft; connects the high-pressure oil pipe to the right end of the screw rod (13), and the tooling installation is now complete; when the driving gear is pressed, the high-pressure oil pump is turned on to allow high-pressure oil to be injected from the right end of the screw rod (13), enter the motor shaft through the central oil channel of the screw rod (13), and then enter the joint surface of the motor shaft and the driving gear through the motor shaft oil channel, so that the inner hole of the driving gear expands slightly, and at this time, the hydraulic oil cylinder is turned on to push the stopper sleeve, so that the hydraulic oil cylinder generates a leftward thrust, and the driving gear is pressed leftward onto the motor shaft; Step 4: After the motor (1) is pressed, the hydraulic cylinder is moved to the next station through the Y-axis slideway (5) to continue the press-fitting of the remaining motors (1).

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