Motor stator winding tool

Abstract

The utility model discloses a motor stator winding tool which comprises a stator limiting ring seat, a stator limiting ring is installed at one end of the inner side of the stator limiting ring seat in the axial direction, a stator to be wound is assembled on the inner side of the stator limiting ring in the axial direction, and the position of the stator to be wound is preliminarily limited by the stator limiting ring. The end, away from the stator limiting ring, of the stator limiting ring base is detachably connected with a driving connecting shaft base through a screw, and the driving connecting shaft base is used for being in butt joint with a rotating shaft of an external driving device and providing a power transmission foundation for winding operation. Meanwhile, limiting hook plates are symmetrically arranged on the two sides of the stator limiting ring base in the circumferential direction, the position of the stator limiting ring is further locked by the stator limiting ring base through detachable clamping fit of the limiting hook plates and the stator limiting ring, and finally accurate and stable assembly of the stator to be wound is achieved. In addition, by replacing the stator limiting rings with different inner diameters and thickness specifications, the tool can be flexibly adapted to the to-be-wound stators with various sizes, and the suitability of the tool is improved.

Description

Technical Field

[0001] This utility model relates to the field of stator winding tooling technology, and in particular to a motor stator winding tooling. Background Technology

[0002] Stator winding is a critical process in motor manufacturing, requiring tooling to fix the stator and work in conjunction with the drive unit to ensure winding accuracy and efficiency. However, existing winding tooling has significant limitations: First, coaxiality control is insufficient. In some tooling, the stator positioning component and drive connection component are fixed as a single unit, making it difficult to calibrate coaxiality during assembly. This can lead to uneven winding of the enameled wire and even wear on the stator slots due to misalignment between the stator and drive shaft during winding. Second, stator loading and unloading are inconvenient. Most tooling uses multiple sets of bolts for fixing and limiting, requiring each bolt to be unscrewed during disassembly, making the stator handling process cumbersome and extending operation time. Third, compatibility is poor. The stator limiting structure of the tooling is mostly designed with fixed dimensions, which cannot adapt to stators with different outer diameters and thicknesses. Changing the stator model requires replacing the entire tooling.

[0003] Therefore, those skilled in the art have provided a motor stator winding fixture to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a motor stator winding fixture.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A motor stator winding fixture includes a stator limiting ring seat, a stator limiting ring installed at one axial end of the inner side of the stator limiting ring seat, a stator to be wound installed on the inner side of the stator limiting ring along the axial direction, a drive connecting shaft seat detachably connected to the end of the stator limiting ring seat away from the stator limiting ring by screws, the drive connecting shaft seat being used to connect to the rotating shaft of an external drive device, and limiting hook plates symmetrically installed on both sides of the stator limiting ring seat along the circumferential direction, the limiting hook plates engaging with the stator limiting ring in a detachable snap-fit ​​manner.

[0007] Preferably, the limiting hook plate includes a hook plate main body rod, one end of which is integrally formed with a hook portion for locking and positioning, and the other end is integrally connected with a handle portion for easy operation, and an arc-shaped contour transition portion is provided between the handle portion and the hook plate main body rod.

[0008] Preferably, both sides of the stator limiting ring seat are provided with main rod receiving grooves extending along its axial direction for accommodating the hook plate main rod, and both sides of the drive connecting shaft seat are provided with handle receiving grooves communicating with the main rod receiving grooves for accommodating the handle part. The stator limiting ring is slidably inserted into the inner side of the stator limiting ring seat along its axial direction, and both sides of the stator limiting ring away from the drive connecting shaft seat are provided with notches, and the hook part is adapted to hook into the notch.

[0009] Preferably, the contour transition portion of the limiting hook plate is rotatably hinged to the handle receiving slot via a through shaft. A spring mounting slot is also provided on the inner side of the handle receiving slot. The spring mounting slot is used to install a spring, and the two ends of the spring abut against the inner wall of the spring mounting slot and the handle portion, respectively.

[0010] Preferably, both the inner side of the stator limiting ring seat and the inner side of the stator limiting ring are axially mounted with limiting pins. The portion of the limiting pin protruding from the stator limiting ring seat or the stator limiting ring is a rod-shaped structure with an arc-shaped cross-section. Both the outer side of the stator to be wound and the outer side of the stator limiting ring are provided with arc-shaped grooves, and the arc-shaped grooves are adapted to engage with the arc-shaped protrusions of the corresponding limiting pins.

[0011] Preferably, an axial retaining ring is provided on the inner side of the stator limiting ring facing away from the drive connecting shaft seat. The axial retaining ring stops at the edge of the outer end face of the stator to be wound, thereby axially limiting one end of the stator to be wound. A washer is installed on the inner side of the stator limiting ring seat. The end of the stator to be wound away from the axial retaining ring and the end of the limiting pin on the inner side of the stator limiting ring both abut against the washer.

[0012] Preferably, the end of the drive connecting shaft seat away from the stator limiting ring seat is integrally formed with a bushing for fitting the rotating shaft of the external drive device. The bushing has a partially open groove, which is connected to the inner side of the bushing, and one end of the groove extends a predetermined arc length along the circumference of the bushing. The outer side of the bushing has a bolt through hole, which spirally penetrates the two side walls of the partially open groove along the radial direction of the bushing.

[0013] Preferably, the drive connecting shaft seat has two arc-shaped rings symmetrically arranged circumferentially at one end of the stator limiting ring seat, and the inner ring of the stator limiting ring seat is provided with an annular groove that expands outward at the end of the drive connecting shaft seat, and the inner diameter of the annular groove is adapted to the outer diameter of the arc-shaped ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] After the stator is inserted into the stator limiting ring, the axial retaining ring can quickly position one end of the stator. When the stator limiting ring slides into the stator limiting ring seat, the limiting hook plate automatically engages with the notch by the spring force, and together with the washer ring, it abuts against the other end of the stator, forming a bidirectional axial fixation, preventing axial movement of the stator during winding. At the same time, the limiting pin and the arc groove precisely engage, restricting the circumferential rotation of the component and ensuring accurate winding position. By replacing stator limiting rings of different specifications, it can be adapted to stators of various sizes without changing the main tooling, greatly improving versatility. In addition, the arc ring and the annular groove can be matched to easily calibrate coaxiality, ensuring that the stator and the external drive shaft are precisely coaxial. Attached Figure Description

[0016] To illustrate the technical solutions in the embodiments of the present invention or the prior art more specifically and intuitively, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the motor stator winding tooling structure proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the structure for opening the main rod receiving groove proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the drive connection shaft seat structure proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the stator limiting ring structure proposed in this utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the tooling proposed in this utility model;

[0022] Figure 6 This is a schematic diagram of the washer ring installation structure proposed in this utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the annular groove proposed in this utility model;

[0024] Figure 8 This is a schematic diagram of the limiting hook plate structure proposed in this utility model.

[0025] In the diagram: 1. Stator limiting ring seat; 2. Stator limiting ring; 3. Stator to be wound; 4. Drive connecting shaft seat; 41. Bushing; 42. Partially open slot; 43. Bolt through hole; 44. Arc ring; 5. Limiting hook plate; 51. Main rod; 52. Hook part; 53. Handle part; 54. Contour transition part; 6. Main rod receiving groove; 7. Handle receiving slot; 8. Spring mounting groove; 9. Notched groove; 10. Limiting pin; 11. Arc groove; 12. Axial retaining ring; 13. Washer ring; 14. Annular groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Reference Figure 1-8 A motor stator winding fixture includes a stator limiting ring seat 1, a stator limiting ring 2 installed on one axial end of the inner side of the stator limiting ring seat 1, a stator 3 to be wound installed on the inner side of the stator limiting ring 2 along the axial direction, a drive connecting shaft seat 4 detachably connected to one end of the stator limiting ring seat 1 away from the stator limiting ring 2 by screws, the drive connecting shaft seat 4 being used to connect the rotating shaft of an external drive device, and limiting hook plates 5 symmetrically installed on both sides of the stator limiting ring seat 1 along the circumferential direction, the limiting hook plates 5 being detachably engaged with the stator limiting ring 2.

[0028] By adopting the above technical solutions, this tooling constructs a stable stator positioning and drive transmission system through the coordinated layout of stator limiting ring seat 1, stator limiting ring 2, stator to be wound 3, drive connecting shaft seat 4 and limiting hook plate 5. Among them, the stator limiting ring seat 1 serves as the core support carrier, providing a precise installation benchmark for the stator limiting ring 2. The stator limiting ring 2 directly performs preliminary axial positioning of the inner stator 3 to be wound, preventing the stator 3 to be wound from shifting during the assembly stage. The drive connecting shaft seat 4 is detachably connected to the stator limiting ring seat 1 by screws, which facilitates the later maintenance and component replacement of the tooling, and can reliably connect to the external drive device shaft, ensuring that the driving force is stably transmitted to the entire tooling and meeting the requirement of synchronous rotation of the tooling as a whole during winding. The limiting hook plates 5 symmetrically arranged on both sides of the stator limiting ring seat 1 can effectively limit the axial movement of the stator limiting ring 2 relative to the stator limiting ring seat 1 by detachably engaging with the stator limiting ring 2, thereby indirectly fixing the axial position of the stator 3 to be wound, providing a basic guarantee for the accuracy of subsequent winding processes.

[0029] The limiting hook plate 5 includes a hook plate main body rod 51. One end of the hook plate main body rod 51 is integrally formed with a hook part 52 for locking and positioning, and the other end is integrally connected with a handle part 53 for easy operation. An arc-shaped contour transition part 54 is provided between the handle part 53 and the hook plate main body rod 51.

[0030] By adopting the above technical solution, the split structure design of the limiting hook plate 5 balances positioning reliability and operational convenience. The hook plate main body rod 51, as the core support component of the limiting hook plate 5, ensures the strength of the overall structure and provides a stable connection between the hook parts 52 and the handle part 53 at both ends. The hook parts 52 are integrally formed at the end of the hook plate main body rod 51 and can be precisely matched with the notch 9 of the stator limiting ring 2 to achieve a firm locking and positioning, avoiding locking failure caused by winding vibration. The handle part 53 facilitates manual operation of the limiting hook plate 5 by the operator, reducing the difficulty of operation when loading and unloading the stator 3 to be wound. At the same time, the arc-shaped contour transition part 54 between the handle part 53 and the hook plate main body rod 51 can effectively disperse stress concentration during operation, extend the service life of the limiting hook plate 5, and make the hook plate rotate more smoothly, improving the operating feel.

[0031] Both sides of the stator limiting ring seat 1 are provided with main rod receiving grooves 6 that extend along its axial direction and are used to accommodate the hook plate main rod 51. Both sides of the drive connecting shaft seat 4 are provided with handle receiving grooves 7 that communicate with the main rod receiving grooves 6 and are used to accommodate the handle part 53. The stator limiting ring 2 is slidably inserted into the stator limiting ring seat 1 along its axial direction. Both sides of the stator limiting ring 2 away from the drive connecting shaft seat 4 are provided with notches 9. The hook part 52 is adapted to hook into the notch 9.

[0032] The above technical solutions, including the matching design of the main rod receiving groove 6, the handle receiving slot 7, and the notch 9, achieve interference-free fit and precise positioning of each component. The main rod receiving groove 6 on the stator limiting ring seat 1 extends axially and can completely accommodate the hook plate main rod 51, preventing the hook plate main rod 51 from being exposed and colliding with other components. It also guides the rotation trajectory of the hook plate main rod 51. The handle receiving slot 7 on the drive connecting shaft seat 4 is connected to the main rod receiving groove 6, providing movement space for the handle part 53 and ensuring that the operator can operate the handle without obstruction. The notch 9 on the stator limiting ring 2 is precisely matched with the hook part 52. When the hook part 52 is engaged in the notch 9, the position of the stator limiting ring 2 can be quickly fixed, and the stator limiting ring 2 can slide axially along the stator limiting ring seat 1, facilitating the quick loading and unloading of the stator 3 to be wound and improving the overall efficiency of the tooling.

[0033] The contour transition part 54 of the limiting hook plate 5 is rotatably hinged to the handle receiving slot 7 through the through shaft. The handle receiving slot 7 is also provided with a spring mounting slot 8. The spring mounting slot 8 is used to install the spring, and the two ends of the spring abut against the inner wall of the spring mounting slot 8 and the handle part 53 respectively.

[0034] Using the above technical solution, the hinged structure of the contour transition part 54 and the elastic configuration of the spring mounting groove 8 realize the automatic reset and continuous limiting of the limiting hook plate 5; the limiting hook plate 5 is hinged to the shaft through the contour transition part 54 and is located in the handle receiving groove 7, so that the limiting hook plate 5 can rotate flexibly around the shaft, providing a structural basis for the engagement and disengagement of the hook part 52 and the notch 9; the spring installed in the spring mounting groove 8 (not shown in the figure) abuts against the groove wall and the handle part 53 at both ends, and can continuously apply an elastic force to the handle part 53, driving the hook part 52 to always maintain the tendency to engage in the notch 9, avoiding the engagement from loosening due to vibration during the winding process; when it is necessary to disassemble the stator 3 to be wound, the operator only needs to press the handle part 53 to overcome the spring force, so that the hook part 52 can disengage from the notch 9, which is convenient and efficient.

[0035] Both the inner side of the stator limiting ring seat 1 and the inner side of the stator limiting ring 2 are axially mounted with limiting pins 10. The part of the limiting pin 10 protruding from the stator limiting ring seat 1 or the stator limiting ring 2 is a rod-shaped structure with an arc cross section. Both the outer side of the stator 3 to be wound and the outer side of the stator limiting ring 2 are provided with arc-shaped grooves 11. The arc-shaped grooves 11 are adapted to engage with the arc-shaped protrusions of the corresponding limiting pins 10.

[0036] By adopting the above technical solution, the mating structure of the limiting pin 10 and the arc-shaped groove 11 effectively solves the problem of relative circumferential rotation between components. The limiting pin 10, which is axially installed on the inner side of the stator limiting ring seat 1 and the stator limiting ring 2, has a curved cross-section design for its protruding part. This design allows it to precisely engage with the arc-shaped groove 11 on the outer side of the stator 3 to be wound and the stator limiting ring 2, limiting the circumferential displacement between the three and preventing the rotation of the stator 3 to be wound or the stator limiting ring 2 during winding, which would cause the winding position to deviate. It also reduces the contact friction between the limiting pin 10 and the arc-shaped groove 11, reducing component wear and extending the service life of the tooling.

[0037] An axial retaining ring 12 is provided on the inner side of the stator limiting ring 2, facing away from the drive connecting shaft seat 4. The axial retaining ring 12 stops at the edge of the outer end face of the stator 3 to be wound, thereby axially limiting one end of the stator 3 to be wound. A washer 13 is installed on the inner side of the stator limiting ring seat 1. The end of the stator 3 to be wound away from the axial retaining ring 12 and the end of the limiting pin 10 on the inner side of the stator limiting ring 2 both abut against the washer 13.

[0038] Using the above technical solution, the axial retaining ring 12 on the inner side of the stator limiting ring 2 cooperates with the pad ring 13 on the inner side of the stator limiting ring seat 1 to restrict the axial displacement of the stator 3 to be wound from both ends in both directions; at the same time, the pad ring 13 abuts against the limiting pin 10 on the inner side of the stator limiting ring 2, which can cooperate with the limiting hook plate 5 to jointly restrict the axial displacement of the stator limiting ring 2 and ensure the stability of the component position during winding.

[0039] The drive connecting shaft seat 4 has an integrally formed bushing 41 at one end away from the stator limiting ring seat 1 for mounting the rotating shaft of the external drive device. The bushing 41 has a partial opening groove 42, which is connected to the inner side of the bushing 41, and one end of which extends a predetermined arc length along the circumference of the bushing 41. The bushing 41 has a bolt through hole 43 on the outer side, which spirally penetrates the two side walls of the partial opening groove 42 along the radial direction of the bushing 41.

[0040] The combination design of bushing 41, partial opening groove 42, and bolt hole 43, using the above technical solution, achieves flexible adaptation and firm connection between the tooling and the external drive device. The bushing 41, integrally formed at the end of the drive connecting shaft seat 4, can be directly fitted onto the external drive device shaft, simplifying the assembly process. The partial opening groove 42 on the bushing 41 extends circumferentially with a preset arc length, giving the bushing 41 a certain amount of elastic shrinkage, which can adapt to external shafts with different diameter tolerances, improving the versatility of the tooling. The bolt hole 43 on the outer side of the bushing 41 spirally penetrates the two side walls of the partial opening groove 42 radially. When the fastening bolt passes through the bolt hole 43, it can drive the two side walls of the partial opening groove 42 to move inward, so that the bushing 41 tightly hugs the external shaft, avoiding slippage during the drive process and ensuring stable transmission of driving force.

[0041] Two arc-shaped rings 44 are symmetrically arranged circumferentially at one end of the drive connecting shaft seat 4 and the stator limiting ring seat 1. An annular groove 14 is opened outwardly at the inner ring of the stator limiting ring seat 1 that is attached to the drive connecting shaft seat 4. The inner diameter of the annular groove 14 is adapted to the outer diameter of the arc-shaped ring 44.

[0042] Using the above technical solution, the inner diameter of the opening at one end of the stator limiting ring seat 1 where the stator limiting ring 2 is installed is larger than the inner diameter of the opening at the end of the stator limiting ring seat 4 that is in contact with the drive connecting shaft seat 4 (see attached figure for specific structure). This design provides sufficient space for the axial installation and positioning of the stator limiting ring 2, while avoiding assembly interference with the drive connecting shaft seat 4. In addition, the annular groove 14 opened on the inner ring of the stator limiting ring seat 1 that is in contact with the drive connecting shaft seat 4 facilitates the smooth insertion of the arc ring 44 on the drive connecting shaft seat 4. Through the adaptation and cooperation of the two, the coaxiality of the drive connecting shaft seat 4 and the stator limiting ring seat 1 can be quickly and accurately calibrated, laying the foundation for the accuracy of the subsequent winding process.

[0043] Working principle:

[0044] First, the stator 3 to be wound is inserted axially into the stator limiting ring 2, and initially limited by the axial retaining ring 12. Then, the stator limiting ring 2 is slid into the stator limiting ring seat 1. At this time, under the action of the spring, the limiting hook plate 5 and the hook part 52 automatically hook into the notch 9 of the stator limiting ring 2, and together with the washer ring 13, the axial fixation of the stator 3 to be wound and the stator limiting ring 2 is completed. At the same time, the limiting pins 10 on the inner side of the stator limiting ring seat 1 and the stator limiting ring 2 respectively engage with the arc-shaped grooves 11 of the stator limiting ring 2 and the stator 3 to be wound, limiting circumferential rotation. Then, the arc-shaped ring 44 of the drive connecting shaft seat 4 is inserted into the annular groove 14 of the stator limiting ring seat 1 and fixed with screws. The external drive shaft is sleeved through the bushing 41. The bolt in the bolt through hole 43 is tightened to make the partial opening groove 42 shrink and hug the shaft. The external drive device drives the entire fixture to rotate synchronously, so that the stator 3 to be wound can be precisely wound.

[0045] 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. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A winding tool for a motor stator, comprising a stator limiting ring seat (1), characterized in that, A stator limiting ring (2) is installed on one end of the inner side of the stator limiting ring seat (1) along the axial direction. A stator (3) to be wound is installed on the inner side of the stator limiting ring (2) along the axial direction. A drive connecting shaft seat (4) is detachably connected to the end of the stator limiting ring seat (1) away from the stator limiting ring (2) by screws. The drive connecting shaft seat (4) is used to connect the rotating shaft of an external drive device. Limiting hook plates (5) are symmetrically installed on both sides of the stator limiting ring seat (1) along the circumferential direction. The limiting hook plates (5) are detachably engaged with the stator limiting ring (2).

2. The stator winding tool of claim 1, wherein, The limiting hook plate (5) includes a hook plate main body rod (51). One end of the hook plate main body rod (51) is integrally formed with a hook part (52) for locking and positioning, and the other end is integrally connected with a handle part (53) for easy operation. An arc-shaped contour transition part (54) is provided between the handle part (53) and the hook plate main body rod (51).

3. The motor stator winding fixture according to claim 2, characterized in that, Both sides of the stator limiting ring seat (1) are provided with main rod receiving grooves (6) extending along its axial direction and used to accommodate the hook plate main rod (51). Both sides of the drive connecting shaft seat (4) are provided with handle receiving grooves (7) communicating with the main rod receiving grooves (6) and used to accommodate the handle part (53). The stator limiting ring (2) is slidably inserted into the stator limiting ring seat (1) along its axial direction. Both sides of the stator limiting ring (2) away from the drive connecting shaft seat (4) are provided with notches (9). The hook part (52) is adapted to hook into the notch (9).

4. The stator winding tool of claim 3, wherein, The contour transition part (54) of the limiting hook plate (5) is rotatably hinged to the handle receiving slot (7) through the through shaft. The handle receiving slot (7) is also provided with a spring mounting slot (8). The spring mounting slot (8) is used to install a spring, and the two ends of the spring abut against the inner wall of the spring mounting slot (8) and the handle part (53) respectively.

5. The stator winding tool of claim 1, wherein, Both the inner side of the stator limiting ring seat (1) and the inner side of the stator limiting ring (2) are equipped with limiting pins (10) along the axial direction. The part of the limiting pin (10) protruding from the stator limiting ring seat (1) or the stator limiting ring (2) is a rod-shaped structure with an arc cross section. Both the outer side of the stator (3) to be wound and the outer side of the stator limiting ring (2) are provided with arc-shaped grooves (11). The arc-shaped grooves (11) are adapted to engage with the arc-shaped protruding part of the corresponding limiting pin (10).

6. A stator winding tool for an electrical machine according to claim 5, wherein, An axial retaining ring (12) is provided on the inner side of the stator limiting ring (2) facing away from the drive connecting shaft seat (4). The axial retaining ring (12) blocks the edge of the outer end face of the stator (3) to be wound, thereby axially limiting one end of the stator (3) to be wound. A washer (13) is installed on the inner side of the stator limiting ring seat (1). The end of the stator (3) to be wound away from the axial retaining ring (12) and the end of the limiting pin (10) on the inner side of the stator limiting ring (2) both abut against the washer (13).

7. The stator winding tool of claim 1, wherein, The drive connecting shaft seat (4) has an integrally formed bushing (41) for mounting the rotating shaft of the external drive device at one end away from the stator limiting ring seat (1). The bushing (41) has a partial opening groove (42) that is connected to the inner side of the bushing (41) and one end of which extends a predetermined arc length along the circumference of the bushing (41). The bushing (41) has a bolt through hole (43) on the outer side. The bolt through hole (43) spirally penetrates the two side walls of the partial opening groove (42) along the radial direction of the bushing (41).

8. A stator winding tool for an electrical machine according to claim 7, wherein, The drive connecting shaft seat (4) has two arc-shaped rings (44) symmetrically arranged in the circumferential direction at one end of the stator limiting ring seat (1). The inner ring of the stator limiting ring seat (1) is expanded outward with an annular groove (14) at one end of the drive connecting shaft seat (4). The inner diameter of the annular groove (14) is adapted to the outer diameter of the arc-shaped ring (44).

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