Permanent magnet synchronous motor stator core drill side hole tooling

Abstract

The utility model relates to motor manufacturing technical field especially relates to permanent magnet synchronous motor stator core drill side hole frock, including main part, the main part sets up vertically, and is provided with transmission mechanism and driver connected with transmission in the top of main part, simultaneously detachably provided with drill bit in the bottom of transmission mechanism, still including support overturning subassembly, it can adjust installation in the guide rail connected with main body lift, and the top of support overturning subassembly sets up as overturnable structure, the support overturning subassembly including articulated top frame and support rail connected with the utility model setting, and support rail can adjust installation in the guide rail connected with main body, can be according to the demand adjustment support overturning subassembly position under the condition, for according to stator core axial or radial processing demand control top frame rotates 90 degrees around the shaft, realize the adjustment of stator core state, change the present situation that the stator core state adjustment of the past is completed with hoisting equipment, correspondingly improve stator core processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, and in particular to a tooling for drilling side holes in the stator core of a permanent magnet synchronous motor. Background Technology

[0002] Among the core components of permanent magnet synchronous motors, the stator core is the key structure for realizing energy conversion and magnetic field construction. Its machining accuracy and heat dissipation performance directly determine the motor's operating efficiency and service life.

[0003] To address the heat buildup in the stator core caused by iron losses during motor operation, axial and radial channels need to be machined on the side of the core to form a hybrid axial-radial ventilation structure. This structure, together with the rotor air gap and the casing air duct, forms a composite cooling path, allowing cooling air to flow directly through the core, quickly carrying away the heat from iron losses. This prevents the core from overheating, which could lead to magnetic attenuation or insulation aging, ensuring long-term stable operation of the motor.

[0004] The stator core needs to be precisely positioned and fixed with other components of the motor through specific channels. Therefore, locating pin holes and mounting holes need to be machined on the core. The locating pin holes are used to ensure the coaxiality and positional accuracy of the core within the motor frame, while the mounting holes provide assembly channels for bolt connections. Together, they ensure the assembly coordination between the stator core and components such as the rotor and housing.

[0005] Currently, conventional drilling equipment is commonly used in the industry to process the side holes of stator cores. However, since the stator cores need to be drilled on the end face (axial hole) and the arc-shaped surface (radial hole) successively, there is a significant bottleneck in the processing. The specific operation and problems are as follows: The switching of processing states relies on manual labor and hoisting equipment: because the stator core needs to meet the power requirements of the motor, it is usually designed as a large-size and heavy structure (some models can weigh hundreds of kilograms). After drilling a face (such as the end face), the positioning restriction of the core on the drilling equipment must be released first, and then the posture of the core is adjusted with the help of hoisting equipment such as overhead cranes and forklifts so that the arc-shaped surface or end face to be processed is facing the drill bit before the processing of the next set of holes can be carried out; Processing efficiency is constrained by multiple factors: on the one hand, the scheduling of hoisting equipment, the lifting of iron cores and attitude calibration require a lot of auxiliary time, resulting in a reduction in the effective drilling operation ratio; on the other hand, multiple unpositioning and re-clamping can easily produce positioning errors, requiring additional accuracy detection and adjustment steps, further extending the processing cycle. Utility Model Content

[0006] The purpose of this utility model is to provide a tooling for drilling side holes in the stator core of a permanent magnet synchronous motor, which aims to improve the low efficiency caused by the need to adjust the state of the stator core with the help of hoisting equipment when machining the end face and arc surface of the stator core.

[0007] This utility model is implemented as follows: a tooling for drilling side holes in the stator core of a permanent magnet synchronous motor, comprising a main body, which is vertically arranged, and a transmission mechanism and a driving component connected to the transmission mechanism are arranged at the top of the main body. A drill bit is detachably mounted at the bottom of the transmission mechanism; it also includes: The support tilting assembly is adjustablely mounted on a guide rail connected to the lifting of the main body, and the top of the support tilting assembly is set as a tilting structure. The clamping assembly is rotatably positioned above the supporting and flipping assembly in the middle, with the stator core to be processed clamped in the center relative to the clamping assembly. The limiting component and the fastening component are adjustablely set at both ends of the support and flipping component. The limiting component contacts the arc-shaped surface of the stator core, and the fastening component presses down into contact with the end face of the stator core.

[0008] Furthermore, the support tilting assembly includes a top frame and a support rail distributed vertically. The top frame and the support rail are both configured with a U-shaped structure at the middle of their respective sides, and the shaft end installed below the top frame is rotatably connected to the support rail.

[0009] Furthermore, a square post is provided at the end of the shaft protruding from the support rail, and a sleeve is fitted at the square post. Four equally spaced brake tubes are respectively and directly opposite each other on the sleeve and the support rail. The brake frame inserted into the brake tube is magnetically connected to the support rail.

[0010] Furthermore, the inner space of the guide rail and the support rail are both designed with a convex structure, and the support rail is installed inside the guide rail; the guide rail is fixedly installed on the sleeve, the sleeve is fitted onto the column of the main body, and the rack installed vertically on the column is meshed with the gear of the sleeve.

[0011] Furthermore, the clamping assembly includes an upper conical plate and a lower conical plate distributed vertically. A connecting rod fixedly mounted on the lower conical plate passes through the upper conical plate, and a compression ring plate is threaded onto the top of the connecting rod. Meanwhile, the bottom of the connecting rod is inserted into the top frame via a bearing connection. The stator core is located between the upper and lower conical plates.

[0012] Furthermore, the clamping assembly also includes multiple circumferentially distributed baffles, with rubber components disposed between adjacent baffles; the multiple baffles are located between the stator cores, and the upper and lower ends of the baffles are in contact with the upper and lower conical plates, respectively.

[0013] Furthermore, the limiting assembly includes a threaded column, a drive rod, and two vertical rods. The end of the threaded column is connected to the power output shaft of the motor, and the threaded column is threaded through the drive rod. Bottom balls are slidably sleeved at both ends of the drive rod, and a sleeve frame is rotatably set on the top of the bottom ball. The vertical rod is fixedly installed above the sleeve frame, and an outer tube is connected to the outside of the vertical rod through a bearing.

[0014] Furthermore, the sleeve is slidably fitted onto the top frame, and the end of the fixing plate used to support the motor and the threaded column is inserted into the through hole at the end of the top frame.

[0015] Furthermore, the fastening assembly includes a lower pressure plate, a traction plate, and a telescopic cylinder; the two lower pressure plates are slidably sleeved on the two vertical rods respectively, and a support is provided at the bottom of the spring located below the lower pressure plate. The support is a convex structure, and a bolt passing through the support passes through a limiting hole in the vertical rod; a lifting plate is provided on the side of the two lower pressure plates away from the stator core, and pulleys are installed below the top frames at both ends of the lifting plate. One end of the cable wound on the pulley is connected to the driving rod, and the other end is connected to the traction plate. The traction plate is connected to the telescopic end of the telescopic cylinder.

[0016] Furthermore, a sliding hole is provided on the top frame, and the end of the traction plate passes through the sliding hole. The telescopic cylinder is installed below the top frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The support and flipping assembly of this utility model includes a top frame and a support rail that are hinged together. The support rail is adjustable and installed on a guide rail connected to the main body. When the position of the support and flipping assembly is adjusted according to the requirements, the top frame can be controlled to rotate 90° around the axis according to the axial or radial processing requirements of the stator core, thereby adjusting the state of the stator core. This changes the previous situation of adjusting the state of the stator core by means of hoisting equipment, and improves the processing efficiency of the stator core accordingly.

[0018] 2. The present invention installs a fastening assembly on the top frame, which includes two lower pressure plates that move up and down and are connected to the telescopic cylinder by cables, traction plates and telescopic cylinders. When the lower pressure plates are in contact with the stator core, the telescopic cylinders can work to force the lower pressure plates to move a short distance to squeeze the adjacent stacked silicon steel sheets, thus avoiding the separation of adjacent silicon steel sheets during the drilling process. Attached Figure Description

[0019] Figure 1 This is a first structural schematic diagram of the entire utility model; Figure 2 This is a second structural schematic diagram of the entire utility model; Figure 3 This is a schematic diagram of the third structure of the entire utility model; Figure 4 This is a schematic diagram of the structure of the supporting flipping component and the clamping component in this utility model; Figure 5 This is a structural schematic diagram of the supporting flipping component, limiting component, and fastening component in this utility model; Figure 6 This is a schematic diagram of the structure of the supporting flipping component in this utility model; Figure 7This is a schematic diagram of the limiting component in this utility model; Figure 8 This is a first structural schematic diagram of the fastening component in this utility model; Figure 9 This is a schematic diagram of the second structure of the fastening component in this utility model; Figure 10 This is a structural schematic diagram of the fastening component of this utility model.

[0020] In the diagram: 1. Main body; 11. Base; 12. Guide rail; 13. Sleeve; 14. Rack; 15. Transmission mechanism; 16. Drive mechanism; 2. Support and tilting assembly; 21. Support rail; 22. Brake pipe; 23. Brake frame; 24. Square hole; 25. Sleeve frame; 26. Square column; 27. Top frame; 28. Through hole; 29. ​​Sliding hole; 3. Clamping assembly; 31. Baffle; 32. Rubber part; 33. Extrusion ring plate; 34. Connecting... 35. Lower cone plate; 36. Upper cone plate; 4. Limiting assembly; 41. Fixing plate; 42. Motor; 43. Threaded column; 44. Driving rod; 45. Sleeve frame; 46. Bottom ball; 47. Vertical rod; 48. Outer tube; 5. Fastening assembly; 51. Limiting hole; 52. Cable; 53. Pulley; 54. Top frame; 55. Lifting plate; 56. Lower pressure plate; 561. Lower pressure groove; 57. Telescopic cylinder; 58. Spring; 59. Pulling plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details: In order to facilitate the adjustment of the stator core state as needed during the radial and axial hole machining of the stator core, and to change the previous situation of using hoisting equipment to complete the stator core state adjustment, thereby improving the stator core machining efficiency, this embodiment provides a new tooling for stator core machining.

[0023] Combination Figures 1-5As shown, the fixture includes a main body 1, a support and tilting assembly 2, a clamping assembly 3, a limiting assembly 4, and a fastening assembly 5. The support and tilting assembly 2 is adjustablely mounted on a guide rail 12 connected to the lifting of the main body 1, and the top of the support and tilting assembly 2 is designed to be tiltable. The clamping assembly 3 is rotatably positioned above the support and tilting assembly 2 at the center, with the stator core to be processed clamped relative to the clamping assembly 3. The limiting assembly 4 and the fastening assembly 5 are adjustablely positioned at both ends of the support and tilting assembly 2, with the limiting assembly 4 contacting the arc-shaped surface of the stator core and the fastening assembly 5 pressing down on the end face of the stator core. When processing of the stator core is required, the support and tilting assembly 2 is kept in a stable state, and then the stator core is clamped on the clamping assembly 3, placing the stator core vertically. The end face holes of the stator core can then be processed using drilling equipment. After the stator core end face is machined, the restriction of the support and flipping assembly 2 is released, causing the stator core to rotate 90°. The drilling device can then be used to machine the arc-shaped hole channels in the stator core. Whether machining the end face or the arc-shaped surface, the stator core can be stably installed with the cooperation of the limiting assembly 4 and the fastening assembly 5. In particular, the fastening assembly 5 forces the silicon steel sheets that make up the stator core to be placed close together. When the drilling device machiners the stator core, the drill bit is directly in front of the area where the fastening assembly 5 operates. Because the clamping assembly 3 is rotatably connected to the support and flipping assembly 2, and the stator core is in rolling contact with the limiting assembly 4, the position of the stator core facing the drill bit can be adjusted as needed, whether machining the end face or the arc-shaped surface, to allow drilling at different locations on the stator core.

[0024] like Figures 1-3 As shown, the main body 1 includes a base 11 and a column vertically mounted above the base 11. A sleeve 13 is mounted on the column and raised and lowered, with protrusions on both the upper and lower sides of the sleeve 13. These protrusions are fixedly connected to the column. A rack 14, vertically mounted on the column, meshes with a gear in the sleeve 13. Therefore, the height of the sleeve 13 can be adjusted by gripping a crank handle that controls the gear's rotation. Additionally, two guide rails 12 are parallel to and fixedly mounted on the side of the sleeve 13, with a distance between the two guide rails 12 greater than the diameter of the stator core. Furthermore, a transmission mechanism 15 and a drive mechanism 16 can be connected to the top of the column. A drill bit can be detachably mounted at the bottom of the transmission mechanism 15, allowing the drilling of holes to be completed by raising and lowering the guide rails 12 in conjunction with the drill bit. A cooling system can even be installed on the column to dissipate heat from the processed stator core.

[0025] like Figure 6As shown, the support and tilting assembly 2 includes a top frame 27 and a support rail 21 distributed vertically. The width of the top frame 27 is smaller than the width of the support cabinet 21. The top frame 27 and the support rail 21 are both configured with a U-shaped structure at their midpoints on opposite sides. A shaft end inserted into the bottom of the top frame 27 is rotatably connected to the support rail 21, facilitating the control of the top frame 27's rotation around the shaft to achieve stator core tilting as needed. The inner space of the guide rail 12 and the support rail 21 are both configured with a convex structure. The support rail 21 is installed inside the guide rail 12, and a brake bolt threaded through the guide rail 12 presses against the support rail 21, ensuring a stable connection between the support and tilting assembly 2 and the guide rail 12 while facilitating the adjustment of the top frame 27's position as needed.

[0026] To ensure stable installation of the rotating top frame 27 relative to the support rail 21, a square post 26 is provided at the end of the shaft protruding from the support rail 21. A sleeve bracket 25 is matched at the square post 26, with the square post 26 passing through the square hole 24 of the sleeve bracket 25, so that the sleeve bracket 25 is stationary relative to the shaft. Four equally spaced brake tubes 22 are respectively and directly opposite each other on the sleeve bracket 25 and the support rail 21. The brake bracket 23 inserted into the brake tube 22 is magnetically connected to the support rail 21. When it is necessary to adjust the orientation of the top frame 27, the brake bracket 23 is pulled out to release the restriction between the top frame 27 and the support rail 21, and then the top frame 27 is rotated 90°. Finally, the brake bracket 23 is inserted back into the brake tube 22 to keep the top frame 27 stationary with the support rail 21.

[0027] like Figure 10 As shown, the clamping assembly 3 includes an upper conical plate 36 and a lower conical plate 35 distributed vertically. A connecting rod 34, fixedly mounted on the lower conical plate 35, passes through the upper conical plate 36. A pressing ring plate 33 is threaded onto the top of the connecting rod 34, while the bottom of the connecting rod 34 is inserted into the top frame 27 via a bearing connection, achieving a stable and rotatable connection between the clamping assembly 3 and the support and flipping assembly 2. When clamping the stator core, the stator core is placed on the lower conical plate 35, and then the upper conical plate 36 is placed on top of the stator core. The pressing ring plate 33 is rotated to press down on the upper conical plate 36. Utilizing the structural characteristics of the upper conical plate 36 and the lower conical plate 35, the stator core is stably clamped and forced into a centered position.

[0028] like Figure 10As shown, since the stator core is composed of multiple stacked silicon steel sheets, to ensure that each layer of silicon steel sheets is aligned and to reduce the impact of processing on the stator core, the clamping assembly 3 also includes multiple circumferentially distributed baffles 31. Rubber parts 32 are provided between adjacent baffles 31, ensuring a stable connection between the multiple baffles 31 and facilitating the adaptation to stator cores of different diameters. The multiple baffles 31 are located between the stator cores, and the upper and lower ends of the baffles 31 contact the upper conical plate 36 and the lower conical plate 35, respectively. Therefore, when the upper conical plate 36 and the lower conical plate 35 are close to each other, the multiple baffles 31 move away from each other and conform to the inner wall of the stator core, thus ensuring the stable placement of each layer of silicon steel sheets under the action of the baffles 31.

[0029] like Figure 7 As shown, the limiting assembly 4 includes a threaded post 43, a driving rod 44, and two vertical rods 47. The end of the threaded post 43 is connected to the power output shaft of the motor 42, and the threaded post 43 is threaded through the driving rod 44. Bottom balls 46 are slidably fitted at both ends of the driving rod 44. A sleeve frame 45 is rotatably mounted on the top of the bottom balls 46. The vertical rods 47 are fixedly installed above the sleeve frame 45, and an outer tube 48 is connected to the outside of the vertical rods 47 via a bearing. When assembling the limiting assembly 4 and the top frame 27, the sleeve frame 45 is slidably fitted onto the top frame 27. The end of the fixing plate 41, which supports the motor 42 and the threaded post 43, is inserted into the through hole 28 at the end of the top frame 27. After the stator core is clamped onto the clamping assembly 3, the motor 42 drives the threaded post 43 to rotate, adjusting the position of the sleeve frame 45 and the vertical rods 47 so that the outer tube 48 contacts the stator core.

[0030] like Figure 8 , Figure 9As shown, the fastening assembly 5 includes a lower pressure plate 56, a pulling plate 59, a telescopic cylinder 57, and part of the structure of the fastening assembly 4. More precisely, it replaces the outer tube 48 of the fastening assembly 4 with the components of the fastening assembly 5. The two lower pressure plates 56 are slidably sleeved on the two vertical rods 47, and a support is provided at the bottom of the spring 58 located below the lower pressure plate 56. The support is designed with a convex structure, and a bolt passing through the support passes through a limiting hole 51 of the vertical rod 47. This design is convenient for accommodating stator cores of different heights, so that under the action of the spring 58 in a compressed state, the lower pressure plate 56 tends to move away from the stator core, facilitating contact between the fastening assembly 5 and the stator core. A lifting plate 55 is installed through the two lower pressure plates 56 on the side away from the stator core. A pulley 53 is installed below the top frame 54 at both ends of the lifting plate 55. One end of a cable 52 wound around the pulley 53 is connected to the drive rod 44, and the other end is connected to the traction plate 59. The traction plate 59 is connected to the telescopic end of the telescopic cylinder 57. During assembly, a sliding hole 29 is provided on the top frame 27, and the end of the traction plate 59 passes through the sliding hole 29. The telescopic cylinder 57 is installed below the top frame 27. After the stator core is clamped onto the clamping assembly 3, the motor 42 drives the threaded column 43 to rotate, adjusting the position of the sleeve frame 45 and the vertical rod 47 so that the lower pressure groove 561 of the lower pressure plate 56 fits against the edge of the stator core. Then, the telescopic cylinder 57 works to force the traction plate 59 to move the ends of the two cables 52, which in turn forces the lifting plate 55 to control the two lower pressure plates 56 to move a short distance, thereby squeezing the silicon steel sheets and preventing adjacent silicon steel sheets from separating during the drilling process.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. It should be noted that for those skilled in the art, any changes, modifications or additions without departing from the concept of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A tooling for drilling side holes in the stator core of a permanent magnet synchronous motor, comprising a main body (1), wherein the main body (1) is vertically arranged, and a transmission mechanism (15) and a driving device (16) connected to the main body (1) are provided at the top of the main body (1), and a drill bit is detachably provided at the bottom of the transmission mechanism (15); characterized in that, Also includes: The support flipping assembly (2) is adjustablely mounted on the guide rail (12) which is connected to the lifting of the main body (1), and the top of the support flipping assembly (2) is configured as a flipping structure; The clamping assembly (3) is rotatably positioned above the support and flipping assembly (2) in the middle, and the stator core to be processed is clamped in the middle relative to the clamping assembly (3). The limiting component (4) and the fastening component (5) are respectively adjustablely disposed at both ends of the supporting flipping component (2). The limiting component (4) is in contact with the arc-shaped surface of the stator core, and the fastening component (5) is pressed into contact with the end face of the stator core.

2. The tooling for drilling side holes in the stator core of a permanent magnet synchronous motor according to claim 1, characterized in that: The support and flipping assembly (2) includes a top frame (27) and a support rail (21) distributed vertically. The top frame (27) and the support rail (21) are both set in a U-shape at the middle of their sides, and the shaft end installed below the top frame (27) is rotatably connected to the support rail (21).

3. The tooling for drilling side holes in the stator core of a permanent magnet synchronous motor according to claim 2, characterized in that: A square post (26) is provided at the end of the shaft protruding from the support rail (21). A socket (25) is provided at the square post (26). Four equally spaced brake tubes (22) are provided on the socket (25) and the support rail (21) respectively and facing each other. A brake bracket (23) inserted into the brake tube (22) is magnetically connected to the support rail (21).

4. The tooling for drilling side holes in the stator core of a permanent magnet synchronous motor according to claim 2, characterized in that: The inner space of the guide rail (12) and the support rail (21) are both set as convex structures, and the support rail (21) is installed inside the guide rail (12); the guide rail (12) is fixedly installed on the sleeve (13), the sleeve (13) is sleeved on the column of the main body (1), and the rack (14) installed vertically on the column is meshed with the gear of the sleeve (13).

5. The tooling for drilling side holes in the stator core of a permanent magnet synchronous motor according to claim 2, characterized in that: The clamping assembly (3) includes an upper conical plate (36) and a lower conical plate (35) distributed vertically. A connecting rod (34) fixedly mounted on the lower conical plate (35) passes through the upper conical plate (36). The top of the connecting rod (34) is threaded with a compression ring plate (33), and the bottom of the connecting rod (34) is inserted into the top frame (27) through a bearing connection. The stator core is located between the upper conical plate (36) and the lower conical plate (35).

6. The tooling for drilling side holes in the stator core of a permanent magnet synchronous motor according to claim 5, characterized in that: The clamping assembly (3) also includes multiple circumferentially distributed baffles (31), with rubber parts (32) provided between adjacent baffles (31); the multiple baffles (31) are located between the stator cores, and the upper and lower ends of the baffles (31) are in contact with the upper cone plate (36) and the lower cone plate (35) respectively.

7. The tooling for drilling side holes in the stator core of a permanent magnet synchronous motor according to claim 2, characterized in that: The limiting component (4) includes a threaded post (43), a drive rod (44) and two vertical rods (47). The end of the threaded post (43) is connected to the power output shaft of the motor (42), and the threaded post (43) is threaded through the drive rod (44). Bottom balls (46) are slidably sleeved at both ends of the drive rod (44). A sleeve frame (45) is rotatably provided on the top of the bottom ball (46). The vertical rods (47) are fixedly installed above the sleeve frame (45), and an outer tube (48) is connected to the outside of the vertical rods (47) through a bearing.

8. The tooling for drilling side holes in the stator core of a permanent magnet synchronous motor according to claim 7, characterized in that: The sleeve (45) is slidably sleeved on the top frame (27), and the end of the fixing plate (41) used to support the motor (42) and the threaded column (43) is inserted into the through hole (28) at the end of the top frame (27).

9. The tooling for drilling side holes in the stator core of a permanent magnet synchronous motor according to claim 2, characterized in that: The fastening assembly (5) includes a lower pressure plate (56), a traction plate (59), and a telescopic cylinder (57). The two lower pressure plates (56) are slidably sleeved on the two vertical rods (47), and a support is provided at the bottom of the spring (58) located below the lower pressure plate (56). The support is a convex structure, and the bolt passing through the support passes through a certain limiting hole (51) of the vertical rod (47). A lifting plate (55) is provided on the side of the two lower pressure plates (56) away from the stator core. A pulley (53) is installed below the top frame (54) at both ends of the lifting plate (55). One end of the cable (52) wound on the pulley (53) is connected to the driving rod (44), and the other end is connected to the traction plate (59). The traction plate (59) is connected to the telescopic end of the telescopic cylinder (57).

10. The tooling for drilling side holes in the stator core of a permanent magnet synchronous motor according to claim 9, characterized in that: The top frame (27) is provided with a sliding hole (29), the end of the traction plate (59) is provided through the sliding hole (29), and the telescopic cylinder (57) is installed below the top frame (27).

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