An automated assembly unit for servo motor rotor and stator

Abstract

This invention discloses an automated assembly unit for servo motor rotor and stator, characterized by comprising a stator positioning fixture, a cylinder lifting assembly, a servo transmission assembly, a pressure head assembly, a stator, a rotor, and a support. The stator positioning fixture, cylinder lifting assembly, servo transmission assembly, and pressure head assembly are all mounted on the support. The stator positioning fixture is positioned in the middle of the support for positioning the stator end face stop. The cylinder lifting assembly is located at the lower end of the stator positioning fixture for lifting the rotor's ejector pin holes. The servo transmission assembly is located at the top of the support for driving the pressure head assembly and the cylinder lifting assembly. The pressure head assembly is located directly above the stator positioning fixture for pressing the rotor and stator together. This invention replaces semi-automatic assembly, enabling fully automated rotor and stator assembly and screwing, reducing the labor intensity of workers.

Description

Technical Field

[0001] This invention relates to the field of servo motor manufacturing technology, and in particular to an automated assembly unit for servo motor rotor and stator. Background Technology

[0002] With the continuous development of industrialization and the introduction of the concept of intelligent manufacturing, the manufacturing trend for mass-produced products is moving towards intelligent automation. Currently, for the production of servo motors, the installation of servo motor rotors and stators is generally carried out using a semi-automatic assembly method. This step of servo motor installation requires two employees to work online in shifts for 12 hours a day, which is labor-intensive and inefficient. Summary of the Invention

[0003] This invention provides an automated assembly unit for servo motor rotor and stator, which has the advantages of realizing automatic assembly of rotor and stator in servo motor production, improving production efficiency, reducing production costs, and freeing up labor.

[0004] The above-mentioned objective of this invention is achieved through the following technical solution: an automated assembly unit for servo motor rotor and stator, characterized in that it includes a stator positioning fixture, a cylinder lifting assembly, a servo transmission assembly, a pressure head assembly, a stator, a rotor, and a support. The stator positioning fixture, cylinder lifting assembly, servo transmission assembly, and pressure head assembly are all mounted on the support. The stator positioning fixture is located in the middle of the support for positioning the stator end face stop. The cylinder lifting assembly is located at the lower end of the stator positioning fixture for lifting the rotor's ejector pin hole. The servo transmission assembly is located at the top of the support for driving the pressure head assembly and the cylinder lifting assembly to move. The pressure head assembly is located directly above the stator positioning fixture for pressing the rotor and stator together.

[0005] The present invention is further configured such that the stator positioning fixture includes a mounting plate, a parallel cylinder, a first clamping finger, a thin cylinder, a mounting block, a floating joint, a linear guide rail, and a clamping block. The mounting plate is used to mount the stator onto a support. The parallel cylinder is mounted on the mounting plate. The first clamping finger is mounted on the parallel cylinder and is used to clamp the stator to move horizontally. The thin cylinder is mounted on the mounting plate via the mounting block and is used to push the clamping block to clamp the rotor. The floating joint is mounted on the clamping block and is used for floating support. The linear guide rail is placed on the mounting plate and is used to guide the movement of the clamping block.

[0006] The present invention is further configured such that the cylinder lifting assembly includes a lifting bracket, a top column, a fastening nut, a standard cylinder, and a second slider. The lifting bracket is connected to a servo transmission assembly, and the fastening nut is fastened to the top column to support the pin hole on the rotor shaft. The standard cylinder is placed below the lifting bracket to push the top column on the lifting bracket to provide floating support for the rotor. The second slider is connected to a support to guide the movement of the cylinder lifting assembly.

[0007] The present invention is further configured such that the servo transmission assembly includes a pin protection assembly, a lead screw assembly, a reducer, a servo motor, and a support. The pin protection assembly is placed on the support for manual threading protection, the reducer is placed on the support for transmitting power, and the servo motor is placed on the support for driving the lead screw assembly to rotate.

[0008] The present invention is further configured such that the lead screw assembly includes a lead screw, a ball nut, a left lead screw support, and a right lead screw support. The ball nut is sleeved on the lead screw. A deep groove ball bearing is sleeved on the left end of the lead screw. The deep groove ball bearing is restricted to the left end of the lead screw by a shaft end retaining ring. The deep groove ball bearing is installed in the left lead screw support, and the left lead screw support is mounted on the support. An angular contact ball bearing is sleeved on the right end of the lead screw. The angular contact ball bearing is installed in the right lead screw support, and the right end of the lead screw extends out of the right lead screw support. The right lead screw support is mounted on the support. One end of the angular contact ball bearing restricts the inner and outer rings by the shaft end retaining ring and the right lead screw support. The other end of the angular contact ball bearing restricts the outer and inner rings by a first pressure plate and a round nut.

[0009] The present invention is further configured such that the pin protection assembly includes a pin cylinder, a connector, and a guide rod. The pin cylinder is placed on a support and is used to horizontally push the guide rod. The connector is placed between the pin cylinder and the guide rod and connects the pin cylinder and the guide rod.

[0010] The invention is further configured such that the pressure head component includes a pressure mounting bracket, a lower pressure bracket, a guide rail slider, a first spring, a guide post, a pressure sensor, an automatic tightening gun, a tightening gun bracket, and a clamping mechanism. The pressure mounting bracket is placed on a support to hold the lower pressure bracket in place. The lower pressure bracket is placed on a support to press the upper shaft end face of the motor rotor. The guide rail slider is placed on a support to guide the pressure head component to ensure vertical accuracy when it is pressed down. The first spring is placed on the pressure mounting bracket to separate the pressure sensor from the lower pressure bracket and to allow it to float. The guide post is placed on the lower pressure bracket to guide the first spring and connect to the lower pressure bracket, serving as a floating support. The automatic tightening gun is placed on the tightening gun bracket and connected to the pressure mounting bracket for automatic screw-on installation between the rotor and the stator. The clamping mechanism is placed on the lower pressure bracket to horizontally clamp the small end face of the upper flange of the rotor.

[0011] The present invention is further configured such that the clamping mechanism includes a cylinder mounting plate, a clamping cylinder, a second clamping finger, a guide pin, a second spring, and a second pressure plate. The cylinder mounting plate is placed on the lower pressure bracket for mounting the clamping cylinder. The clamping cylinder is placed on the cylinder mounting plate. The second clamping finger is placed on the clamping cylinder for clamping the rotor flange. The guide pin is placed on the lower pressure bracket for guiding the second pressure plate and the rotor flange downwards. The second spring is placed on the guide pin for pressing the second pressure plate. The second pressure plate is placed on the connection between the guide pin and the lower pressure bracket for pressing the rotor flange.

[0012] In summary, the beneficial effects of the present invention are as follows:

[0013] 1. The motor stator is precisely positioned using a stator positioning fixture. The cylinder lifting assembly raises the jack to a certain position and aligns it with the pin hole on the rotor shaft. The servo drive assembly drives the pressure head assembly, which presses the pressure head onto the upper shaft at the rear end of the rotor, pressing the rotor vertically downwards until it mates with the rotor flange and the end face of the stator housing. The servo drive assembly then stops working, and the servo screw-in gun on the pressure head assembly moves down to the designated position to automatically screw in the rotor. This completes the automatic screw-in function. Through these actions, the automatic assembly of the motor rotor and stator is achieved, replacing semi-automatic assembly. This fully automated rotor-stator assembly and screw-in process is adaptable to various servo motor products, reducing the labor intensity of workers and improving production efficiency while ensuring the overall performance of the servo motors produced. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the stator positioning tooling in an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the cylinder lifting assembly in an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the servo drive assembly in an embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of the lead screw assembly in an embodiment of the present invention;

[0019] Figure 6 This is a schematic diagram of the structure of the pin protection component in an embodiment of the present invention;

[0020] Figure 7 This is a schematic diagram of the structure of the booster head component in an embodiment of the present invention;

[0021] Figure 8 This is a schematic diagram of the clamping mechanism in an embodiment of the present invention.

[0022] In the diagram, 1. Stator positioning fixture; 2. Cylinder lifting assembly; 3. Servo transmission assembly; 4. Pressure head assembly; 5. Stator; 6. Rotor; 7. Mounting plate; 8. Parallel cylinder; 9. First clamping finger; 10. Thin cylinder; 11. Mounting block; 12. Floating joint; 13. Linear guide rail; 14. Clamping block; 15. Lifting bracket; 16. Top column; 17. Fastening nut; 18. Standard cylinder; 19. Second slider; 20. Pin protection assembly; 21. Lead screw assembly; 22. Reducer; 23. Servo motor; 24. Support; 25. Lead screw; 26. Ball nut; 27. Left... 28. Side lead screw support; 29. ​​Right side lead screw support; 30. First pressure plate; 31. Angular contact ball bearing; 32. Round nut; 33. Deep groove ball bearing; 34. Shaft end retaining ring; 35. Pin cylinder; 36. Connector; 37. Guide rod; 38. Press-fit bracket; 39. Lower pressure bracket; 40. Guide rail slider; 41. First spring; 42. Guide post; 43. Pressure sensor; 44. Automatic tightening gun; 45. Tightening gun bracket; 46. Clamping mechanism; 47. Cylinder mounting plate; 48. Clamping cylinder; 49. Second clamping finger; 50. Guide post pin; 51. Second spring; 52. Second pressure plate. Detailed Implementation

[0023] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] Example: Reference Figure 1-8 The above-mentioned objective of the present invention is achieved through the following technical solution: an automated assembly unit for servo motor rotor and stator, characterized in that it includes a stator positioning fixture 1, a cylinder lifting assembly 2, a servo transmission assembly 3, a pressure head assembly 4, a stator 5, a rotor 6, and a support 24. The stator positioning fixture 1, the cylinder lifting assembly 2, the servo transmission assembly 3, and the pressure head assembly 4 are all mounted on the support 24. The stator positioning fixture 1 is located in the middle of the support 24 for positioning the end face stop of the stator 5. The cylinder lifting assembly 2 is located at the lower end of the stator positioning fixture 1 for lifting the pin hole of the rotor 6. The servo transmission assembly 3 is located at the top of the support 24 for driving the pressure head assembly 4 and the cylinder lifting assembly 2 to move. The pressure head assembly 4 is located directly above the stator positioning fixture 1 for pressing the rotor 6 and the stator 5 together.

[0025] The present invention is further configured such that the stator positioning fixture 1 includes a mounting plate 7, a parallel cylinder 8, a first clamping finger 9, a thin cylinder 10, a mounting block 11, a floating joint 12, a linear guide rail 13, and a clamping block 14. The mounting plate is used to be mounted on the support 24. The parallel cylinder 8 is disposed on the mounting plate 7. The first clamping finger 9 is mounted on the parallel cylinder 8 and is used to clamp the stator to move in the horizontal direction. The thin cylinder 10 is mounted on the mounting plate 7 through the mounting block 11 and is used to push the clamping block 14 to clamp the rotor. The floating joint 12 is disposed on the clamping block 14 and is used for floating support. The linear guide rail 13 is placed on the mounting plate 7 and is used to guide the movement of the clamping block 14.

[0026] The present invention is further configured such that the cylinder lifting assembly 2 includes a lifting bracket 15, a top column 16, a fastening nut 17, a standard cylinder 18, and a second slider 19. The lifting bracket 15 is connected to the servo transmission assembly 3, and the fastening nut 17 is fastened to the top column 16 to support the pin hole on the rotor shaft. The standard cylinder 18 is placed below the lifting bracket 15 to push the top column 16 on the lifting bracket 15 to provide floating support for the rotor. The second slider 19 is connected to the support 24 to guide the movement of the cylinder lifting assembly 2.

[0027] The present invention is further configured such that the servo transmission assembly 3 includes a pin protection assembly 20, a lead screw assembly 21, a reducer 22, a servo motor 23, and a support 24. The pin protection assembly 20 is placed on the support 24 for manual threading protection. The reducer 22 is placed on the support 24 for transmitting power. The servo motor 23 is placed on the support 24 for driving the lead screw assembly 21 to rotate.

[0028] The present invention is further configured such that the lead screw assembly 21 includes a lead screw 25, a ball nut 26, a left lead screw support 27, and a right lead screw support 28. The ball nut 26 is sleeved on the lead screw 25. A deep groove ball bearing 32 is sleeved on the left end of the lead screw 25. The deep groove ball bearing 32 is restricted to the left end of the lead screw 25 by a shaft end retaining ring 33. The deep groove ball bearing 32 is installed in the left lead screw support 27. The left lead screw support 28 is installed on a support 24. An angular contact ball bearing 30 is sleeved on the right end of the lead screw 25. The angular contact ball bearing 30 is installed in the right lead screw support 28, and the right end of the lead screw 25 extends out of the right lead screw support 27. The right lead screw support 28 is installed on a support 24. One end of the angular contact ball bearing 30 is restricted to its inner and outer rings by the shaft end retaining ring 33 and the right lead screw support 28. The other end of the angular contact ball bearing 30 is restricted to its outer and inner rings by a first pressure plate 29 and a round nut 31.

[0029] The present invention is further configured such that the pin protection assembly 20 includes a pin cylinder 34, a connector 35 and a guide rod 36. The pin cylinder 34 is placed on the support 24 and is used to horizontally push the guide rod 36. The connector 35 is placed between the pin cylinder 34 and the guide rod 36 and connects the pin cylinder 34 and the guide rod 36.

[0030] The present invention is further configured such that the pressure head component 4 includes a pressure mounting bracket 38, a lower pressure bracket 39, a guide rail slider 40, a first spring 41, a guide post 42, a pressure sensor 43, an automatic tightening gun 44, a tightening gun bracket 45, and a clamping mechanism 46. The pressure mounting bracket 38 is placed on the support 24 to hold the lower pressure bracket 39 against it. The lower pressure bracket 39 is placed on the support 24 to press against the upper shaft end face of the motor rotor 6. The guide rail slider 40 is placed on the support 24 to guide the pressure head component 4 to ensure verticality when it presses down. For upward precision, the first spring 41 is placed on the press-fit bracket 38 to separate the pressure sensor 43 from the lower press-fit bracket 39 and for floating. The guide post 42 is placed on the lower press-fit bracket 39 to guide the first spring 41 and connect to the lower press-fit bracket 39 for floating support. The automatic tightening gun 44 is placed on the tightening gun bracket 45 and connected to the press-fit bracket 38 for automatic screw installation between the rotor 6 and the stator 5. The clamping mechanism 46 is placed on the lower press-fit bracket 39 for horizontally clamping the small end face of the flange on the rotor 6.

[0031] The present invention is further configured such that the clamping mechanism 46 includes a cylinder mounting plate 47, a clamping cylinder 48, a second clamping finger 49, a guide pin 50, a second spring 51, and a second pressure plate 52. The cylinder mounting plate 47 is placed on the lower pressure bracket 39 for mounting the clamping cylinder 48. The clamping cylinder 48 is placed on the cylinder mounting plate 47. The second clamping finger 49 is placed on the clamping cylinder 48 for clamping the rotor 6 flange. The guide pin 50 is placed on the lower pressure bracket 39 for guiding the second pressure plate 52 and the rotor 6 flange downwards. The second spring 51 is placed on the guide pin 50 for pressing the second pressure plate 52. The second pressure plate 52 is placed on the connection between the guide pin 50 and the lower pressure bracket 39 for pressing the rotor 6 flange.

[0032] The workflow of the servo motor rotor and stator automated assembly unit in this embodiment is as follows: The motor stator 5 is precisely positioned by the stator positioning fixture 1. The cylinder lifting assembly 2 pushes the column 16 to a certain position and pushes it to the position of the push pin hole on the rotor 6 shaft. The servo transmission assembly 3 drives the pressure head assembly 4 to push the pressure head on the pressure head assembly 4 to the upper shaft at the rear end of the rotor 6, pressing the rotor 6 vertically downward until the flange of the rotor 6 matches the end face of the stator 5 housing. The servo transmission assembly 3 stops working, and the servo nail gun on the pressure head assembly 4 moves down to the designated position to automatically nail and complete the automatic nailing function.

[0033] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. An automated assembly unit for servo motor rotor and stator, characterized in that, The system includes a stator positioning fixture (1), a cylinder lifting assembly (2), a servo transmission assembly (3), a pressure head assembly (4), a stator (5), a rotor (6), and a support (24). The stator positioning fixture (1), the cylinder lifting assembly (2), the servo transmission assembly (3), and the pressure head assembly (4) are all mounted on the support (24). The stator positioning fixture (1) is located in the middle of the support (24) to position the end face stop of the stator (5). The cylinder lifting assembly (2) is located at the lower end of the stator positioning fixture (1) to lift the pin hole of the rotor (6). The servo transmission assembly (3) is located at the top of the support (24) to drive the pressure head assembly (4) and the cylinder lifting assembly (2) to move. The press head component (4) is located directly above the stator positioning fixture (1) and is used for press-fitting the rotor (6) and the stator (5); The pressure head component (4) includes a pressure mounting bracket (38), a lower pressure bracket (39), a first spring (41), a guide post (42), a pressure sensor (43), and a clamping mechanism (46). The pressure mounting bracket (38) is placed on the support (24), and the lower pressure bracket (39) is placed on the support (24) to press the upper shaft end face of the motor rotor. The first spring (41) is placed on the pressure mounting bracket (38) to separate the pressure sensor (43) from the lower pressure bracket (39) and to allow it to float. The guide post (42) is placed on the lower pressure bracket (39) to guide the first spring (41) and connect the lower pressure bracket (39). The clamping mechanism (46) is placed on the lower pressure bracket (39). The clamping mechanism (46) includes a cylinder mounting plate (47). The system includes a clamping cylinder (48), a second clamping finger (49), a guide pin (50), a second spring (51), and a second pressure plate (52). The cylinder mounting plate (47) is placed on the lower pressure bracket (39). The clamping cylinder (48) is placed on the cylinder mounting plate (47). The second clamping finger (49) is placed on the clamping cylinder (48) for clamping the rotor flange. The guide pin (50) is placed on the lower pressure bracket (39) for guiding the second pressure plate (52) and the rotor flange downwards. The second spring (51) is placed on the guide pin (50) for pressing the second pressure plate (52). The second pressure plate (52) is placed on the connection between the guide pin (50) and the lower pressure bracket (39) for pressing the rotor (6) flange. The stator positioning fixture (1) includes a mounting plate (7), a parallel cylinder (8), a first clamping finger (9), a thin cylinder (10), a mounting block (11), a floating joint (12), a linear guide rail (13), and a clamping block (14). The mounting plate is used to be mounted on the support (24). The parallel cylinder (8) is set on the mounting plate (7). The first clamping finger (9) is mounted on the parallel cylinder (8) and is used to clamp the stator to move in the horizontal direction. The thin cylinder (10) is mounted on the mounting plate (7) through the mounting block (11) and is used to push the clamping block (14) to clamp the rotor. The floating joint (12) is set on the clamping block (14) and is used for floating support. The linear guide rail (13) is placed on the mounting plate (7) and is used to guide the movement of the clamping block (14).

2. The servo motor rotor-stator automated assembly unit according to claim 1, characterized in that, The cylinder lifting assembly (2) includes a lifting bracket (15), a top column (16), a fastening nut (17), a standard cylinder (18), and a second slider (19). The lifting bracket (15) is connected to the servo transmission assembly (3). The fastening nut (17) is fastened to the top column (16) to support the pin hole on the rotor shaft. The standard cylinder (18) is placed below the lifting bracket (15) to push the top column (16) on the lifting bracket (15) to provide floating support for the rotor. The second slider (19) is connected to the support (24) to guide the movement of the cylinder lifting assembly (2).

3. The servo motor rotor-stator automated assembly unit according to claim 1, characterized in that, The servo drive assembly (3) includes a pin protection assembly (20), a lead screw assembly (21), a reducer (22), a servo motor (23), and a support (24). The pin protection assembly (20) is placed on the support (24) for manual threading protection. The reducer (22) is placed on the support (24) for transmitting power. The servo motor (23) is placed on the support (24) for driving the lead screw assembly (21) to rotate.

4. The servo motor rotor-stator automated assembly unit according to claim 3, characterized in that, The lead screw assembly (21) includes a lead screw (25), a ball nut (26), a left lead screw support (27), and a right lead screw support (28). The ball nut (26) is fitted onto the lead screw (25). A deep groove ball bearing (32) is fitted onto the left end of the lead screw (25). The deep groove ball bearing (32) is constrained at the left end of the lead screw (25) by a shaft end retaining ring (33). The deep groove ball bearing (32) is installed inside the left lead screw support (27). The left lead screw support (27) is mounted on a support (24). An angular contact ball bearing (30) is fitted on the right end of the screw (25). The angular contact ball bearing (30) is installed in the right screw support (28) and the right end of the screw (25) extends out of the right screw support (28). The right screw support (28) is installed on the support (24). One end of the angular contact ball bearing (30) is restricted by the shaft end retaining ring (33) and the right screw support (28). The other end of the angular contact ball bearing (30) is restricted by the first pressure plate (29) and the round nut (31).

5. The servo motor rotor-stator automated assembly unit according to claim 1, characterized in that, The pin protection assembly (20) includes a pin cylinder (34), a connector (35) and a guide rod (36). The pin cylinder (34) is placed on the support (24) and is used to horizontally push the guide rod (36). The connector (35) is placed between the pin cylinder (34) and the guide rod (36) to connect the pin cylinder (34) and the guide rod (36).

6. The servo motor rotor-stator automated assembly unit according to claim 1, characterized in that, The press head assembly also includes an automatic tightening gun (44) and a tightening gun bracket (45). The automatic tightening gun (44) is placed on the tightening gun bracket (45) and connected to the press bracket (38) for automatic screwing installation between the rotor (6) and the stator (5).

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