Joint motor production press fitting tool and process

Abstract

This invention discloses a press-fit fixture and process for manufacturing articulated motors, which can ensure proper engagement between two mating workpieces while preventing over-pressing. The press-fit fixture includes: a rotor shaft press-fit fixture for mating the rotor shaft and rotor clamp; a magnet ring press-fit fixture for mating the magnet ring with the mated rotor shaft and rotor clamp to form the rotor; a bearing press-fit fixture for installing the bearing and end cover; a gear ring press-fit fixture for mating the gear ring with the mated bearing and end cover; and a rotor press-fit fixture for mating the rotor with the mated stator and motor housing. This invention features a novel structure, ingenious design, and simple and convenient operation. It effectively limits the engagement position during the press-fit process, significantly increases the yield rate, ensures center point positioning during press-fitting, and automatically ejects the press-fitted parts after press-fitting, allowing workers to easily remove the press-fitted workpieces.

Description

Technical Field

[0001] This invention belongs to the field of articulated motor technology, and relates to a press-fitting tooling and process for producing articulated motors. Background Technology

[0002] A spherical motor is a high-precision actuator that integrates a motor, reducer, and driver. Its internal structure is complex and contains numerous components, typically including a rotor assembly consisting of a rotor shaft, rotor clamps, and magnet rings; a stator; a motor housing; and end cover assemblies containing bearings, gear rings, planetary gears, and other components. The assembly quality of these precision parts directly determines the motor's performance, accuracy, lifespan, and reliability.

[0003] Currently, in the production of articulated motors, especially in the R&D prototyping or small-batch trial production stages, the press-fitting process faces the following challenges:

[0004] 1. Insufficient positioning accuracy: Multiple pressing processes, such as the press-fitting of the rotor shaft and rotor clamp, the rotor clamp and magnet ring, the rotor and motor housing, and the bearing and end cover, all require extremely high coaxiality and perpendicularity. Traditional methods, using simple tooling or completely manual alignment, make it difficult to ensure consistent center point positioning for each press-fitting process. This can easily lead to part misalignment, incomplete pressing, or damage to the mating surfaces of parts, severely impacting product yield.

[0005] 2. Insufficient press-fit depth control: The press-fitting of various components requires a precise fit depth. Too shallow a fit will result in an unreliable connection, while too deep a fit may cause internal stress concentration, deformation, or even cracking of the parts. Existing processes often rely on operator experience or simple mechanical limits, lacking precise and reliable depth control components. This makes it impossible to simultaneously ensure "proper engagement" and "avoid overpressure," resulting in poor product quality consistency.

[0006] 3. Cumbersome and inefficient operation: Due to the lack of dedicated tooling for the entire press-fitting process of articulated motors, the press-fitting of different components may require frequent tooling changes or adjustments, making the operation cumbersome. After press-fitting, the workpiece is often tightly fitted to the tooling, making it difficult to remove, increasing the labor intensity of operators, reducing production efficiency, and is especially unsuitable for the needs of rapid verification of multiple solutions during the R&D stage;

[0007] Therefore, based on the above problems, there is a need in this field for a joint motor manufacturing press-fitting tooling and process to achieve precise positioning and reliable limiting of each press-fitting step, ensure press-fitting quality, and at the same time, to be simple and safe to operate, effectively improving the efficiency and yield of R&D prototyping and small-batch production. Summary of the Invention

[0008] To address the aforementioned problems, this invention proposes a press-fitting fixture and process for manufacturing articulated motors, which effectively solves the problems in the prior art.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0010] A press-fitting fixture for manufacturing articulated motors, comprising:

[0011] A rotor shaft press-fitting fixture for fitting a rotor shaft to a rotor clamp. The rotor shaft press-fitting fixture includes a fixture base plate for fixing the rotor shaft. The upper side of the fixture base plate is provided with a support plate for positioning the rotor clamp that can move up and down. The support plate moves downward under the action of the press to form a structure in which the rotor shaft and the rotor clamp fit together.

[0012] A magnetic steel ring press-fitting fixture for fitting a magnetic steel ring with a rotor shaft and rotor clamp to form a rotor. The magnetic steel ring press-fitting fixture includes a fixture base plate, a rotor clamp support block for placing the rotor shaft, and a magnetic steel mounting plate for placing the magnetic steel ring. The rotor clamp support block can move up and down relative to the magnetic steel mounting plate.

[0013] A bearing press-fitting fixture for installing bearings and end caps, the bearing press-fitting fixture includes a fixture base plate three, an inner support ring one for positioning the bearing, and an inner support ring two for positioning the end cap, the inner support ring two being able to move up and down relative to the inner support ring one.

[0014] A gear ring press-fitting fixture for fitting a gear ring with a mated bearing and end cap. The gear ring press-fitting fixture includes a fixture base plate four, an end cap mounting block for positioning the end cap, and a gear ring limiting ring for positioning the gear ring. The end cap mounting block and the gear ring limiting ring can move up and down relative to the fixture base plate four.

[0015] A rotor press-fitting fixture for fitting the rotor to the stator and motor housing after mating, the rotor press-fitting fixture includes a fixture base plate, a housing support plate for positioning the motor housing, and a rotor support cylinder for positioning the rotor.

[0016] Preferably, the rotor shaft press-fitting fixture further includes a rotor shaft support block, which is fixedly connected to the middle of the fixture base plate. The rotor shaft support block has a plurality of guide posts fixedly connected to the fixture base plate in an outer annular array. Each guide post is slidably connected to the support plate. A square spring is fitted on the outer side of each guide post. The upper and lower ends of each square spring abut against the support plate and the fixture base plate, respectively. A guide post connecting plate is fixedly connected to the upper side of the plurality of guide posts. A plurality of limiting posts for limiting the movement distance of the support plate are fixedly connected to the upper side of the fixture base plate. A rotor hoop limiting ring is integrally formed and fixed in the middle of the upper side of the support plate.

[0017] Preferably, a plurality of fixed posts are fixedly connected between the magnet mounting plate and the tooling base plate 2. A support plate 2 that can move up and down is provided between the magnet mounting plate and the tooling base plate 2. A plurality of guide posts 2 are fixedly connected to the upper side of the tooling base plate 2. A plurality of square springs 2 are provided between the support plate 2 and the tooling base plate 2. Each square spring 2 is sleeved on the outer side of the corresponding guide post 2. The rotor hoop support block is fixedly connected to the middle of the upper side of the support plate 2. A limiting cylinder 1 for limiting the movement distance of the support plate 2 is fixedly connected to the tooling base plate 2. A magnet limiting groove is opened in the middle of the magnet mounting plate. The upper end of the rotor hoop support block extends through the magnet limiting groove to the top of the magnet mounting plate.

[0018] Preferably, the bearing press-fitting fixture further includes a guide post connecting plate two, which is disposed on the upper side of the fixture base plate three. A plurality of guide posts three are fixedly connected between the guide post connecting plate two and the fixture base plate three. A support plate three that can move up and down is provided between the guide post connecting plate two and the fixture base plate three. Each guide post three is slidably connected to the support plate three. A square spring three is provided on the lower side of the support plate three and fitted on the outer side of the corresponding guide post three. A bearing support block is fixedly connected to the middle of the fixture base plate three. An inner support ring one is fixedly connected to the upper side of the bearing support block. An inner support ring two is fixedly connected to the middle of the upper side of the support plate three. A plurality of limiting posts two for limiting the support plate three are provided on the upper side of the fixture base plate three.

[0019] Preferably, the sliding of the gear ring pressing tooling further includes a guide post connecting plate three, a plurality of guide posts four are provided between the guide post connecting plate three and the tooling base plate four, a support plate four is provided between the guide post connecting plate three and the tooling base plate four and slidably connected to the guide posts four, the gear ring limiting ring is fixedly connected to the middle of the support plate four, a plurality of square springs five are provided between the support plate four and the tooling base plate four and fitted on the outside of the guide posts four, a gear ring support block is fixedly connected to the middle of the upper side of the tooling base plate four, the gear ring support block extends upward through the gear ring limiting ring to the top of the support plate four, a plurality of slide rods are slidably connected to the upper side of the gear ring support block, the lower side of the end cap mounting block is fixedly connected to the upper side of each slide rod, a square spring four is fitted on the outside of each slide rod, and a plurality of limiting posts three for limiting the displacement distance of the support plate four are fixedly connected to the upper side of the tooling base plate four.

[0020] Preferably, a plurality of fixing posts 2 are fixedly connected between the outer shell support plate and the tooling base plate 5, a support plate 5 is provided between the outer shell support plate and the tooling base plate 5, a plurality of guide posts 5 are fixedly connected to the upper side of the tooling base plate 5, each of the guide posts 5 is slidably connected to the tooling base plate 5, a plurality of square springs 6 are provided on the lower side of the tooling base plate 5 and fitted on the outside of the guide posts 5, the rotor support cylinder is fixedly connected to the middle of the upper side of the support plate 5, a limiting cylinder 2 is fixedly connected to the middle of the upper side of the tooling base plate 5, a through groove is provided on the outer shell support plate for the rotor to pass through, and the rotor support cylinder extends to the top of the outer shell support plate through the through groove.

[0021] Furthermore, this invention discloses a press-fitting process for manufacturing articulated motors, including the aforementioned press-fitting fixture for manufacturing articulated motors, and further comprising the following steps:

[0022] Step S1: Assemble the rotor shaft and rotor clamps:

[0023] Insert the end of the rotor shaft into the inside of the rotor shaft support block, then place the rotor hoop on the rotor hoop limiting ring on the support plate one, and press the press head on the press presses the rotor hoop down to realize that the rotor hoop is sleeved on the rotor shaft, thus completing the press installation of the rotor shaft.

[0024] Step S2: Assemble the magnet ring:

[0025] Place the rotor hoop with the rotor shaft pressed in step S1 onto the rotor hoop support block, then place the magnet ring into the magnet limiting groove of the magnet mounting plate. The press head on the press presses the rotor hoop down, so that the rotor hoop is embedded into the inside of the magnet ring, completing the pressing of the magnet ring and obtaining the rotor.

[0026] Step S3, Press-fitting of the motor body:

[0027] Place the motor housing with the stator installed onto the housing support plate, then place the rotor obtained in step S3 onto the rotor support cylinder. The press head on the press presses the rotor down, so that the rotor is embedded into the inside of the motor housing, completing the press fitting of the motor body and obtaining the motor body.

[0028] Step T1: Assemble the bearing and end cover:

[0029] Place the bearing on the bearing support block, then place the end cap on the support plate three and fit it on the outside of the inner support ring two. The press head on the press presses the end cap down, so that the bearing is embedded into the end cap, thus completing the press fitting of the bearing and the end cap.

[0030] Step T2, Assemble the gear ring:

[0031] First, place the gear ring on the gear ring support block, then place the end cover with the bearing assembled in step T1 on the end cover mounting block. The press head on the press presses the end cover down. After the lower circumferential wall of the down-moving end cover abuts against the gear ring limiting ring, continue to move down until the gear ring is completely embedded in the end cover, thus completing the press installation of the motor end cover and obtaining the motor end cover.

[0032] Step T3: Install the planetary gears:

[0033] Manually install the planetary gear into the inside of the motor end cover obtained in step T2 to obtain the end cover body;

[0034] Step N1: After completing steps S3 and T3, manually assemble the motor body obtained in step S3 and the end cap body obtained in step T3 to complete the overall installation of the joint motor.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. This invention includes rotor shaft pressing fixtures, magnet ring pressing fixtures, bearing pressing fixtures, gear ring pressing fixtures, and rotor pressing fixtures. It can adapt to different process steps in the motor pressing process, thereby facilitating operation by staff. It can realize the overall pressing process of the joint motor, is suitable for the product development stage, and the pressing process is complete, greatly reducing the difficulty of production prototyping for staff, improving work efficiency, and ensuring the quality of prototyping products.

[0037] 2. In each tooling of the present invention, there is a component for limiting the pressing position, which can not only ensure that the two mating workpieces are properly engaged, but also prevent over-pressing. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of the rotor shaft press-fitting fixture in this invention.

[0039] Figure 2 This is a schematic cross-sectional view of the rotor shaft press-fitting fixture in this invention.

[0040] Figure 3 This is a schematic diagram of the overall structure of the magnetic steel ring pressing fixture in this invention.

[0041] Figure 4 This is a schematic cross-sectional view of the magnetic ring pressing fixture in this invention.

[0042] Figure 5 This is a schematic diagram of the overall structure of the bearing press-fitting fixture in this invention.

[0043] Figure 6 This is a schematic cross-sectional view of the bearing press-fitting fixture in this invention.

[0044] Figure 7 This is a schematic diagram of the overall structure of the gear ring press-fitting fixture in this invention.

[0045] Figure 8 This is a schematic cross-sectional view of the gear ring press-fitting fixture in this invention.

[0046] Figure 9 This is a schematic diagram of the overall structure of the rotor press-fitting fixture in this invention.

[0047] Figure 10 This is a schematic cross-sectional view of the rotor press-fitting fixture in this invention.

[0048] Figure 11 This is a partial structural diagram of the motor in this invention.

[0049] Figure 12 This is a schematic diagram of the rotor structure after step S2 is completed in this invention.

[0050] Figure 13 This is a schematic diagram of the motor end cover after step T2 is completed in this invention.

[0051] Figure 14 This is a schematic diagram of the motor body after step S3 is completed in this invention.

[0052] Figure 15 This is a schematic diagram of step T3 of the present invention.

[0053] In the diagram: 6. Tooling base plate one; 7. Support plate one; 8. Rotor shaft support block; 9. Guide post one; 10. Square spring one; 11. Guide post connecting plate one; 12. Limiting post one; 13. Rotor hoop limiting ring; 14. Tooling base plate two; 15. Rotor hoop support block; 16. Magnet mounting plate; 17. Fixing post one; 18. Support plate two; 19. Guide post two; 20. Square spring two; 21. Limiting cylinder one; 22. Magnet limiting groove; 23. Tooling base plate three; 24. Inner support ring one; 25. Inner support ring two; 26. Guide post connecting plate two; 27. Guide post three; 28. Support plate three; 29. ​​Square spring three; 30. Bearing support block; 31. Tooling base plate 32. End cover mounting block; 33. Gear ring limiting ring; 34. Guide post connecting plate three; 35. Guide post four; 36. Support plate four; 37. Square spring five; 38. Gear ring support block; 39. Slide rod; 40. Square spring four; 41. Tooling base plate five; 42. Outer shell support plate; 43. Rotor support cylinder; 44. Fixed post two; 45. Support plate five; 46. Guide post five; 47. Square spring six; 48. Limiting cylinder two; 50. Limiting post two; 51. Limiting post three; 52. Rotor; 53. Stator; 54. Motor housing; 55. Rotor shaft; 56. Rotor clamp; 57. Magnet ring; 58. End cover; 59. Bearing; 60. Gear ring. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] The following is in conjunction with the appendix Figures 1 to 15 The specific embodiments of the present invention will be described in further detail below.

[0056] A press-fitting process for manufacturing articulated motors, consisting of... Figures 1 to 3 As shown, the present invention utilizes a press to achieve the following steps:

[0057] Step S1: Assemble the rotor shaft 55 and rotor clamp 56:

[0058] Insert the end of the rotor shaft 55 into the inside of the rotor shaft support block 8, and then place the rotor hoop 56 on the rotor hoop limiting ring 13 on the support plate 7. The press head on the press presses the rotor hoop 56 down, so that the rotor hoop 56 is fitted onto the rotor shaft 55, thus completing the press fitting of the rotor shaft 55.

[0059] It should be noted that a rotor shaft press-fitting fixture is required in this step. The rotor shaft press-fitting fixture includes a fixture base plate 6 for fixing the rotor shaft 55. The upper side of the fixture base plate 6 is provided with a support plate 7 that can move up and down to position the rotor clamp 56. The support plate 7 moves downward under the action of the press to form a structure in which the rotor shaft 55 and the rotor clamp 56 cooperate with each other.

[0060] Furthermore, the rotor shaft press-fitting fixture also includes a rotor shaft support block 8, which is fixedly connected to the middle of the fixture base plate 6, corresponding to the center point of the support plate 7. The rotor shaft support block 8 is arranged in a ring array on the outside with multiple guide posts 9 fixedly connected to the fixture base plate 6. Each guide post 9 is slidably connected to the support plate 7. A square spring 10 is fitted on the outside of each guide post 9. The upper and lower ends of each square spring 10 abut against the support plate 7 and the fixture base plate 6, respectively. A guide post connecting plate 11 is fixedly connected to the upper side of the multiple guide posts 9. Multiple limiting posts 12 for limiting the movement distance of the support plate 7 are fixedly connected to the upper side of the fixture base plate 6. A rotor hoop limiting ring 13 is integrally formed and fixed in the middle of the upper side of the support plate 7.

[0061] Specifically in this embodiment, the rotor shaft press-fitting fixture has four guide posts 9;

[0062] Specifically in this embodiment, during the implementation of step S1, the rotor shaft 55 is first inserted into the upper end of the rotor shaft support block 8, and the rotor hoop 56 is placed inside the rotor hoop limiting ring 13. At this time, after the press is started, the press head on the press presses the rotor hoop 56 downward. When the lower surface wall of the support plate 7 contacts the top of the limiting post 12, the press stops pressing down, and the rotor hoop 56 can be fitted onto the rotor shaft 55. Then the press is withdrawn, and the square spring drives the support plate 7 to spring back to reset, thus resetting the support plate 7. During this process, the rotor shaft 55 and the rotor shaft support block 8 become loose, making it easy for the staff to remove the press-fitted rotor shaft 55 and rotor hoop 56.

[0063] In addition, by setting the limiting post 12, it can be ensured that the rotor shaft 55 and the rotor hoop 56 are engaged in place; the guide post connecting plate 11 can ensure the stability of the guide post 9.

[0064] Step S2, Assemble the magnet ring 57:

[0065] The rotor hoop 56, which has been press-fitted into the rotor shaft 55 in step S1, is placed on the rotor hoop support block 15. Then, the magnet ring 57 is placed into the magnet limiting groove 22 of the magnet mounting plate 16. The press head on the press presses the rotor hoop 56 down, so that the rotor hoop 56 is embedded into the inside of the magnet ring 57, thus completing the press-fitting of the magnet ring 57 and obtaining the rotor 52.

[0066] It should be noted that in this step, a magnet ring pressing fixture is required. The magnet ring pressing fixture includes a fixture base plate 14, a rotor hoop support block 15 for placing the rotor shaft 55, and a magnet mounting plate 16 for placing the magnet ring 57. The rotor hoop support block 15 can move up and down relative to the magnet mounting plate 16.

[0067] Furthermore, multiple fixing posts 17 are fixedly connected between the magnet mounting plate 16 and the tooling base plate 2 14. A support plate 2 18 that can move up and down is provided between the magnet mounting plate 16 and the tooling base plate 2 14. Multiple guide posts 2 19 are fixedly connected to the upper side of the tooling base plate 2 14. Multiple square springs 20 are provided between the support plate 2 18 and the tooling base plate 2 14. Each square spring 20 is sleeved on the outside of the corresponding guide post 2 19. The rotor hoop support block 15 is fixedly connected to the middle of the upper side of the support plate 2 18. A limiting cylinder 21 for limiting the movement distance of the support plate 2 18 is fixedly connected to the tooling base plate 2 14. A magnet limiting groove 22 is opened in the middle of the magnet mounting plate 16. The upper end of the rotor hoop support block 15 extends through the magnet limiting groove 22 to the top of the magnet mounting plate 16.

[0068] Specifically, in this embodiment, in the magnetic steel ring pressing fixture, there are three fixed posts 17 arranged in a ring array; four guide posts 19; the rotor hoop support block 15 is fixedly installed at the top center of the support plate 18; and the limiting cylinder 21 is placed at the center point below the support plate 18.

[0069] Specifically in this embodiment, during the implementation of step S2, the rotor shaft 55, which has been press-fitted into the rotor hoop 56 in step S1, is inserted into the upper end of the rotor hoop support block 15, and the rotor shaft 55 can be engaged with the end of the rotor hoop support block 15. Then, the magnetic steel ring 57 is placed on the outside of the rotor hoop 56 and placed in the magnetic steel limiting groove 22. The press head on the press presses the rotor hoop 56 down. When the bottom of the support plate 2 18 contacts the top of the limiting cylinder 1 21, the press stops moving down, that is, the rotor hoop 56 and the magnetic steel ring 57 are engaged. Then the press is withdrawn, and the square spring 2 20 springs the support plate 2 18 up, so that the rotor shaft 55 and the rotor hoop support block 15 become loose, making it easy for the staff to remove the entire rotor 52 that has been press-fitted at this time.

[0070] In addition, by setting a limiting cylinder 21, when the support plate 2 18 contacts the limiting cylinder 21, it indicates that the magnetic steel ring 57 and the rotor hoop 56 are engaged in place; the magnetic steel limiting groove 22 is used to limit the magnetic steel ring 57, which can ensure the stability of the pressing process.

[0071] Step S3, Press-fitting of the motor body:

[0072] The motor housing 54 with the stator 53 installed is placed on the housing support plate 42, and then the rotor 52 obtained in step S3 is placed on the rotor support cylinder 43. The press head on the press presses the rotor 52 down, so that the rotor 52 is embedded into the inside of the motor housing 54, and the press assembly of the motor body is completed, and the motor body is obtained.

[0073] It should be noted that a rotor pressing fixture is required in this step. The rotor pressing fixture includes a fixture base plate 41, a housing support plate 42 for positioning the motor housing 54, and a rotor support cylinder 43 for positioning the rotor 52.

[0074] Furthermore, multiple fixing posts 44 are fixedly connected between the outer shell support plate 42 and the tooling base plate 41. A support plate 45 is provided between the outer shell support plate 42 and the tooling base plate 41. Multiple guide posts 46 are fixedly connected to the upper side of the tooling base plate 41. Each guide post 46 is slidably connected to the tooling base plate 41. Multiple square springs 47 are provided on the lower side of the tooling base plate 41 and fitted on the outside of the guide posts 46. The rotor support cylinder 43 is fixedly connected to the middle of the upper side of the support plate 45. A limiting cylinder 48 is fixedly connected to the middle of the upper side of the tooling base plate 41. The limiting cylinder 48 is correspondingly located directly below the center of the support plate 45. A through slot is provided on the outer shell support plate 42 for the rotor 52 to pass through. The rotor support cylinder 43 extends to the top of the outer shell support plate 42 through the through slot.

[0075] Specifically, in this embodiment, there are three fixed posts 44 and four guide posts 46;

[0076] Specifically in this embodiment, during the implementation of step S3, the rotor 52 obtained in step S2 is first inserted into the rotor support cylinder 43, and then the motor housing 54 with the stator 53 installed is placed on the housing support plate 42. The press head presses the rotor 52 down and stops pressing when the bottom of the support plate 45 contacts the limiting cylinder 48. Then the press is withdrawn, and the square spring 47 springs the support plate 45 up, so that the rotor 52 and the rotor support cylinder 43 are loosened, making it easier for the staff to remove the pressed motor body.

[0077] In addition, by setting the limiting cylinder 2 48, the rotor 52 is pressed into place when the support plate 5 45 contacts the limiting cylinder 2 48 without causing excessive pressing.

[0078] Step T1: Assemble bearing 59 and end cap 58:

[0079] Place the bearing 59 on the bearing support block 30, then place the end cover 58 on the support plate 3 28 and fit it on the outside of the inner support ring 2 25. The press head on the press presses the end cover 58 down, so that the bearing 59 is embedded into the inside of the end cover 58, thus completing the press fitting of the bearing 59 and the end cover 58.

[0080] It should be noted that in this step, a bearing press-fit fixture is required, including fixture base plate three 23, inner support ring one 24 for positioning bearing 59 and inner support ring two 25 for positioning end cover 58. Inner support ring two 25 can move up and down relative to inner support ring one 24.

[0081] Furthermore, the bearing press-fitting fixture also includes a guide post connecting plate 26, which is disposed on the upper side of the fixture base plate 23. Multiple guide posts 27 are fixedly connected between the guide post connecting plate 26 and the fixture base plate 23. A support plate 28 that can move up and down is provided between the guide post connecting plate 26 and the fixture base plate 23. Each guide post 27 is slidably connected to the support plate 28. A square spring 29 is provided on the lower side of the support plate 28 and fitted on the outside of the corresponding guide post 27. A bearing support block 30 is fixedly connected to the middle of the fixture base plate 23. An inner support ring 24 is fixedly connected to the upper side of the bearing support block 30. An inner support ring 25 is fixedly connected to the middle of the upper side of the support plate 28. Four limiting posts 20 are provided on the upper side of the fixture base plate 23 for limiting the support plate 28.

[0082] Specifically in this embodiment, during the implementation of step T1, the bearing 59 is fitted onto the outer side of the inner support ring 24 of the bearing support block 30, and the end cap 58 is fitted onto the inner support ring 25 on the support plate 3 28. The press head on the press presses onto the end cap 58 and moves down. When the bottom of the support plate 3 28 contacts the limiting post 2 50, the press stops pressing down to achieve the engagement of the bearing 59 and the end cap 58. Then the press is withdrawn, the square spring 3 29 springs up the support plate 3 28, and the bearing 59 and the inner support ring 24 become loose, making it easy for the staff to remove the press-fitted end cap 58 and bearing 59.

[0083] In addition, by setting the inner support ring 24 and the inner support ring, it can be ensured that the bearing 59 and the end cover 58 are limited to a certain extent on the bearing support block 30 and the support plate 28, thereby ensuring the stability of the press fitting.

[0084] By setting the second limiting post 50, when the third supporting plate 28 contacts the second limiting post 50, it can be ensured that the end cover 58 and the bearing 59 are engaged in place, while avoiding excessive pressing.

[0085] Step T2, assemble gear ring 60:

[0086] First, place the gear ring 60 on the gear ring support block 38, then place the end cover 58 with the bearing 59 assembled in step T1 on the end cover mounting block 32. The press head on the press presses the end cover 58 down. After the lower circumferential wall of the down-moving end cover 58 abuts against the gear ring limiting ring 33, continue to move down until the gear ring 60 is completely embedded in the end cover 58, thus completing the press installation of the motor end cover 58 and obtaining the motor end cover 58.

[0087] It should be noted that in this step, a gear ring pressing fixture is required. The gear ring 60 pressing fixture includes a fixture base plate 31, an end cap mounting block 32 for positioning the end cap 58, and a gear ring limiting ring 33 for positioning the gear ring 60. Both the end cap mounting block 32 and the gear ring limiting ring 33 can move up and down relative to the fixture base plate 31.

[0088] Furthermore, the toothed ring 60 press-fitting fixture sliding also includes a guide post connecting plate 34. Multiple guide posts 35 are provided between the guide post connecting plate 34 and the fixture base plate 31. A support plate 36, slidably connected to the guide posts 35, is provided between the guide post connecting plate 34 and the fixture base plate 31. The toothed ring limiting ring 33 is integrally formed and fixedly connected to the middle of the support plate 36. Multiple square springs 37, fitted onto the outside of the guide posts 35, are provided between the support plate 36 and the fixture base plate 31. A gear ring support block 38 is fixedly connected to the middle of the upper side. The gear ring support block 38 extends upward through the gear ring limiting ring 33 to the top of the support plate 36. Multiple slide rods 39 are slidably connected to the upper side of the gear ring support block 38. The lower side of the end cover mounting block 32 is fixedly connected to the upper side of each slide rod 39. A square spring 40 is fitted on the outer side of each slide rod 39. Four limiting posts 51 for limiting the displacement distance of the support plate 36 are fixedly connected to the upper side of the tooling base plate 31.

[0089] Specifically, in this embodiment, there are four guide posts 35; and three slide rods 39, which are arranged in a circular array.

[0090] Specifically in this embodiment, during the implementation of step T2, the gear ring 60 is first placed on the gear ring support block 38. During this process, the gear ring 60 can be limited by the gear ring limiting ring 33. Then, the end cover 58 with the press-fitted bearing 59 obtained in step T1 is placed on the end cover mounting block 32. The press head presses the end cover 58 down. During the down movement, when the bottom of the end cover 58 contacts the gear ring limiting ring 33, the press head continues to move down. The end cover 58 slowly replaces the position of the gear ring limiting ring 33. When the support plate 36 contacts the limiting post 51, the press is stopped, so that the gear ring 60 is completely engaged at the lower end of the end cover 58. Then the press is withdrawn. After that, the square spring 37 springs back to reset the support plate 36, so that the press-fitted motor end cover 58 and the gear ring support block 38 are loosened, making it easier for the staff to remove the motor end cover 58.

[0091] In addition, the cooperation between the slide bar 39 and the square spring 40 allows the end cap 58 to be placed away from the toothed ring 60. During press-fitting, the end cap mounting block 32 squeezes the square spring 40 downward. When the lower end of the end cap 58 replaces the position of the toothed ring limiting ring 33 and the support plate 36 contacts the limiting post 51, the toothed ring 60 is stably engaged at the lower end of the end cap 58. This press-fitting method can achieve center point positioning and ensure the stability of the press-fitting process.

[0092] Step T3: Install the planetary gears:

[0093] Manually install the planetary gear into the inside of the motor end cover 58 obtained in step T2 to obtain the main body of the end cover 58.

[0094] Step N1: After completing steps S3 and T3, manually assemble the motor body obtained in step S3 and the end cover 58 body obtained in step T3 to complete the overall installation of the joint motor.

[0095] It should be noted that steps S1-S3 are used to assemble the motor body, and steps T1-T3 are used to assemble the end cover 58 body. That is, steps S1-S3 and steps T1-T3 are two parallel operations. Steps S1-S3 can be completed first, or steps T1-T3 can be completed first, and neither will affect the overall assembly in the subsequent step N1.

[0096] This invention features a novel structure, ingenious design, and simple and convenient operation. This design effectively limits the engagement position during the pressing process, ensuring that the two mating workpieces can engage properly while preventing over-pressing. It effectively increases the yield rate of pressing, ensures the center point positioning during the pressing process, and automatically ejects the pressing components after pressing, making it convenient for workers to remove the pressed workpieces.

[0097] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A press-fitting fixture for manufacturing articulated motors, characterized in that, include: A rotor shaft press-fitting fixture for fitting a rotor shaft to a rotor clamp. The rotor shaft press-fitting fixture includes a fixture base plate for fixing the rotor shaft. The upper side of the fixture base plate is provided with a support plate for positioning the rotor clamp that can move up and down. The support plate moves downward under the action of the press to form a structure in which the rotor shaft and the rotor clamp fit together. A magnetic steel ring press-fitting fixture for fitting a magnetic steel ring with a rotor shaft and rotor clamp to form a rotor. The magnetic steel ring press-fitting fixture includes a fixture base plate, a rotor clamp support block for placing the rotor shaft, and a magnetic steel mounting plate for placing the magnetic steel ring. The rotor clamp support block can move up and down relative to the magnetic steel mounting plate. A bearing press-fitting fixture for installing bearings and end caps, the bearing press-fitting fixture includes a fixture base plate three, an inner support ring one for positioning the bearing, and an inner support ring two for positioning the end cap, the inner support ring two being able to move up and down relative to the inner support ring one. A gear ring press-fitting fixture for fitting a gear ring with a mated bearing and end cap. The gear ring press-fitting fixture includes a fixture base plate four, an end cap mounting block for positioning the end cap, and a gear ring limiting ring for positioning the gear ring. The end cap mounting block and the gear ring limiting ring can move up and down relative to the fixture base plate four. A rotor press-fitting fixture for fitting the rotor to the stator and motor housing after mating, the rotor press-fitting fixture includes a fixture base plate, a housing support plate for positioning the motor housing, and a rotor support cylinder for positioning the rotor. A plurality of fixing posts 2 are fixedly connected between the outer shell support plate and the tooling base plate 5. A support plate 5 is provided between the outer shell support plate and the tooling base plate 5. A plurality of guide posts 5 are fixedly connected to the upper side of the tooling base plate 5. Each guide post 5 is slidably connected to the tooling base plate 5. A plurality of square springs 6 are provided on the lower side of the tooling base plate 5 and fitted on the outside of the guide posts 5. The rotor support cylinder is fixedly connected to the middle of the upper side of the support plate 5. A limit cylinder 2 is fixedly connected to the middle of the upper side of the tooling base plate 5. A through slot is provided on the outer shell support plate for the rotor to pass through. The rotor support cylinder extends to the top of the outer shell support plate through the through slot.

2. The joint motor manufacturing press-fitting fixture according to claim 1, characterized in that: The rotor shaft press-fitting fixture also includes a rotor shaft support block, which is fixedly connected to the middle of the fixture base plate. The rotor shaft support block has a plurality of guide posts fixedly connected to the fixture base plate in a ring array on its outer side. Each guide post is slidably connected to the support plate. A square spring is fitted on the outer side of each guide post. The upper and lower ends of each square spring abut against the support plate and the fixture base plate, respectively. A guide post connecting plate is fixedly connected to the upper side of the plurality of guide posts. A plurality of limiting posts for limiting the movement distance of the support plate are fixedly connected to the upper side of the fixture base plate. A rotor hoop limiting ring is integrally formed and fixed in the middle of the upper side of the support plate.

3. The joint motor manufacturing press-fitting fixture according to claim 2, characterized in that: A plurality of fixed posts are fixedly connected between the magnet mounting plate and the tooling base plate 2. A support plate 2 that can move up and down is provided between the magnet mounting plate and the tooling base plate 2. A plurality of guide posts 2 are fixedly connected to the upper side of the tooling base plate 2. A plurality of square springs 2 are provided between the support plate 2 and the tooling base plate 2. Each square spring 2 is sleeved on the outer side of the corresponding guide post 2. The rotor hoop support block is fixedly connected to the middle of the upper side of the support plate 2. A limiting cylinder 1 for limiting the movement distance of the support plate 2 is fixedly connected to the tooling base plate 2. A magnet limiting groove is opened in the middle of the magnet mounting plate. The upper end of the rotor hoop support block extends through the magnet limiting groove to the top of the magnet mounting plate.

4. The joint motor manufacturing press-fitting fixture according to claim 3, characterized in that: The bearing press-fitting fixture also includes a guide post connecting plate 2, which is disposed on the upper side of the fixture base plate 3. Multiple guide posts 3 are fixedly connected between the guide post connecting plate 2 and the fixture base plate 3. A support plate 3 that can move up and down is provided between the guide post connecting plate 2 and the fixture base plate 3. Each guide post 3 is slidably connected to the support plate 3. A square spring 3 is provided on the lower side of the support plate 3 and fitted on the outer side of the corresponding guide post 3. A bearing support block is fixedly connected to the middle of the fixture base plate 3. An inner support ring 1 is fixedly connected to the upper side of the bearing support block. An inner support ring 2 is fixedly connected to the middle of the upper side of the support plate 3. Multiple limiting posts 2 for limiting the support plate 3 are provided on the upper side of the fixture base plate 3.

5. The joint motor manufacturing press-fitting fixture according to claim 4, characterized in that: The gear ring pressing fixture also includes a guide post connecting plate three. Multiple guide posts four are provided between the guide post connecting plate three and the fixture base plate four. A support plate four is provided between the guide post connecting plate three and the fixture base plate four and is slidably connected to the guide posts four. The gear ring limiting ring is fixedly connected to the middle of the support plate four. Multiple square springs five are provided between the support plate four and the fixture base plate four and are fitted on the outside of the guide posts four. A gear ring support block is fixedly connected to the middle of the upper side of the fixture base plate four. The gear ring support block extends upward through the gear ring limiting ring to the top of the support plate four. Multiple sliding rods are slidably connected to the upper side of the gear ring support block. The lower side of the end cap mounting block is fixedly connected to the upper side of each sliding rod. A square spring four is fitted on the outside of each sliding rod. Multiple limiting posts three for limiting the displacement distance of the support plate four are fixedly connected to the upper side of the fixture base plate four.

6. A pressing process for manufacturing articulated motors, comprising the pressing fixture for manufacturing articulated motors as described in claim 5, characterized in that: It also includes the following steps: Step S1: Assemble the rotor shaft and rotor clamps: Insert the end of the rotor shaft into the inside of the rotor shaft support block, then place the rotor hoop on the rotor hoop limiting ring on the support plate one, and press the press head on the press presses the rotor hoop down to realize that the rotor hoop is sleeved on the rotor shaft, thus completing the press installation of the rotor shaft. Step S2: Assemble the magnet ring: Place the rotor hoop with the rotor shaft pressed in step S1 onto the rotor hoop support block, then place the magnet ring into the magnet limiting groove of the magnet mounting plate. The press head on the press presses the rotor hoop down, so that the rotor hoop is embedded into the inside of the magnet ring, completing the pressing of the magnet ring and obtaining the rotor. Step S3, Press-fitting of the motor body: Place the motor housing with the stator installed onto the housing support plate, then place the rotor obtained in step S2 onto the rotor support cylinder. The press head on the press presses the rotor down, so that the rotor is embedded into the inside of the motor housing, completing the press fitting of the motor body and obtaining the motor body. Step T1: Assemble the bearing and end cover: Place the bearing on the bearing support block, then place the end cap on the support plate three and fit it on the outside of the inner support ring two. The press head on the press presses the end cap down, so that the bearing is embedded into the end cap, thus completing the press fitting of the bearing and the end cap. Step T2, Assemble the gear ring: First, place the gear ring on the gear ring support block, then place the end cover with the bearing assembled in step T1 on the end cover mounting block. The press head on the press presses the end cover down. After the lower circumferential wall of the down-moving end cover abuts against the gear ring limiting ring, continue to move down until the gear ring is completely embedded in the end cover, thus completing the press installation of the motor end cover and obtaining the motor end cover. Step T3: Install the planetary gears: Manually install the planetary gear into the inside of the motor end cover obtained in step T2 to obtain the end cover body; Step N1: After completing steps S3 and T3, manually assemble the motor body obtained in step S3 and the end cap body obtained in step T3 to complete the overall installation of the joint motor.

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