A block stator winding tool

Abstract

This application provides a winding fixture for a modular stator, relating to the field of machining technology. It includes a base, a rotating spindle mounted on the base, a winding fixture mounted on the top of the rotating spindle, and a pressing assembly above the winding fixture. The top surface of the winding fixture is a contoured surface. The pressing assembly includes two pressing shafts mounted on both ends of the base via linear bearings. Mounting plates are mounted on the upper ends of the two pressing shafts, and horizontal plates are mounted on the lower ends. A push-down cylinder is installed between the base and the horizontal plates. A pressure rod body coaxial with the rotating spindle is rotatably mounted on the mounting plate. A pressing head with a circular arc surface is mounted on the bottom of the pressure rod body. The pressing head is used to press and clamp the inner circumference of the modular stator. An angle positioning mechanism is also provided at the upper end of the pressure rod body for positioning the pressing head. This application improves the positioning accuracy and clamping reliability of the modular stator during the winding process by combining a winding fixture with a contoured surface, a pressing head, and an angle positioning mechanism.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing technology, and in particular to a modular stator winding fixture. Background Technology

[0002] Modular stators are increasingly used in high-power-density motors due to their manufacturing flexibility, high material utilization, and potential for core performance optimization. However, their structure, composed of multiple independent core segments, places higher demands on positioning accuracy and clamping stability during automated winding. Therefore, there is an urgent need to develop a modular stator winding fixture that provides accurate positioning and stable clamping. Utility Model Content

[0003] The purpose of this invention is to address the problems existing in the prior art by providing a modular stator winding fixture that offers accurate positioning and stable clamping.

[0004] The objective of this utility model can be achieved through the following technical solutions: A modular stator winding fixture includes a base, a rotating spindle mounted on the base, a winding fixture mounted on the top of the rotating spindle, and a pressing component disposed above the winding fixture.

[0005] The top surface of the winding fixture is a contoured surface used to fit the outer circumferential surface of the stator block; the pressing assembly includes two pressing shafts mounted on both ends of the base via linear bearings. The upper ends of the two pressing shafts are equipped with mounting plates, and the lower ends are equipped with horizontal plates. A pushing cylinder is installed between the base and the horizontal plates; a pressure rod body coaxial with the rotating spindle is rotatably mounted on the mounting plate. A pressing head with a circular arc surface is installed at the bottom of the pressure rod body. The pressing head is used to fit and press the inner circumferential surface of the stator block; an angle positioning mechanism is also provided at the upper end of the pressure rod body for positioning the pressing head.

[0006] Furthermore, the pressing assembly also includes a pressure rod sleeve, which is mounted on the mounting plate via bearings, and the pressure rod body is sleeved within the pressure rod sleeve; the cylinder wall of the pressure rod sleeve is provided with a strip-shaped limiting hole along the axial direction, and a movable shaft pin is fixedly installed on the pressure rod body, the end of which passes through the strip-shaped limiting hole and can slide therein; a pressure rod spring is provided between the pressure rod sleeve and the pressure rod body, and the pressure rod spring acts on the pressure rod body to provide it with a downward elastic force.

[0007] Furthermore, the angle positioning mechanism includes a positioning plate fixedly mounted on the mounting plate, with a central hole at the center of the positioning plate for accommodating the movement of the pressure rod body therein; a positioning groove is provided on the upper surface of the positioning plate, and a positioning rod that mates with the positioning groove is installed on the upper end of the pressure rod body.

[0008] Furthermore, the positioning groove is a V-shaped groove, and the positioning rod is a round rod.

[0009] Furthermore, the mounting plate is also equipped with a cylinder wire clamping assembly, which is located on the side front of the pressing assembly and is used to clamp the enameled wire.

[0010] Furthermore, the winding fixture includes a block-shaped body, with a fixed shaft located at the center of the bottom of the block-shaped body. The fixed shaft is coaxially mounted with the rotating spindle and fixed by a fixing pin.

[0011] Furthermore, the contoured surface is grooved and set on the upper surface of the block body; limiting baffles are installed at the front and rear ends of the block body to limit the axial direction of the stator.

[0012] Furthermore, the block body has mounting holes along the axis of the stator, and a wire-hanging shaft that can move axially is built in. The limiting baffles are all provided with through holes to accommodate the end of the wire-hanging shaft. One end of the wire-hanging shaft is the wire-hanging end, and the other end is mounted with a push rod that passes through the rotating main shaft in parallel through a fixing block. A thrust spring is also provided in the mounting hole to keep the wire-hanging end in the extended state in normal operation.

[0013] Furthermore, a push rod cylinder for pushing the push rod to move is provided on the base, and a detection component for detecting the position of the hanging spool is installed above the push rod cylinder.

[0014] Furthermore, the push rod is installed perpendicular to the fixing pin.

[0015] Compared with the prior art, the beneficial effects of this utility model are: The modular stator winding fixture provided by this utility model, through a winding jig with a contoured surface, a pressing head with an arc surface, and an angle positioning mechanism, combined with the overall pressing action driven by a cylinder, significantly improves the positioning accuracy, pressing reliability, and angle consistency of the modular stator during the winding process, thereby effectively ensuring winding quality, production efficiency, and product yield. It is particularly suitable for the production of modular stators that require high-precision winding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the modular stator winding fixture in this embodiment of the present invention; Figure 2 This is a schematic diagram of the installation of the modular stator in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the pressing component in an embodiment of this utility model; Figure 4 This is a schematic diagram of the winding fixture in an embodiment of the present invention; Figure 5 This is a side view of the winding fixture in an embodiment of this utility model; Figure 6 As an embodiment of this utility model Figure 5 A sectional view along the middle AA; Figure 7 This is a schematic diagram of the installation of the push rod cylinder in an embodiment of this utility model.

[0017] Among them, 1: base; 2: rotating spindle; 3: winding jig; 4: pressing assembly; 5: block stator; 6: pressure rod body; 7: angle positioning mechanism; 8: cylinder wire clamping assembly; 9: push rod cylinder; 31: block body; 32: fixed shaft; 33: fixed pin; 34: limit baffle; 35: wire hanging shaft; 36: fixed block; 37: push rod; 38: thrust spring; 41: pressing shaft; 42: mounting plate; 43: horizontal plate; 44: pushing cylinder; 45: pressure rod sleeve; 46: strip-shaped limit hole; 61: pressing head; 62: movable shaft pin; 63: pressure rod spring; 64: positioning rod; 71: positioning plate; 72: positioning groove; 91: detection assembly. Detailed Implementation

[0018] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0019] 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.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly. The connection can be a direct connection or an indirect connection.

[0021] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0022] One embodiment of this utility model provides a modular stator winding fixture, such as... Figure 1The diagram shown is a structural schematic of the block stator winding fixture provided in this embodiment. The block stator winding fixture provided in this embodiment includes a base 1, a rotating spindle 2 mounted on the base 1, a winding fixture 3 mounted on the top of the rotating spindle 2, and a pressing component 4 disposed above the winding fixture 3.

[0023] The base 1 can be mounted on a workbench. A motor is installed at the bottom of the base 1 to drive the rotating spindle 2 to rotate. There can be several rotating spindles 2, which are vertically mounted on the base 1 via bearing assemblies. The bottom of the base 1 can also be connected to the output shaft of the motor via a synchronous belt, which improves the utilization efficiency of the motor and enables the rotating spindles 2 to rotate synchronously. The winding fixture 3 is installed at the top of the rotating spindle 2 and rotates with the spindle, driving the entire stator to rotate, so that the winding machine can evenly wind copper wire onto the stator along a preset trajectory.

[0024] like Figure 2 The diagram shows the installation of the modular stator in this embodiment. The top surface of the winding fixture 3 is a contoured surface, used to fit the outer circumferential surface of the modular stator 5. The pressing assembly 4 includes two pressing shafts 41 mounted on both ends of the base 1 via linear bearings. The upper ends of the two pressing shafts 41 are equipped with mounting plates 42, and the lower ends are equipped with horizontal plates 43. A pushing cylinder 44 is installed between the base 1 and the horizontal plate 43. A pressure rod body 6 coaxial with the rotating spindle 2 is rotatably mounted on the mounting plate 42. A pressing head 61 with a circular arc surface is installed at the bottom of the pressure rod body 6. The pressing head 61 is used to fit and press the inner circumferential surface of the modular stator 5. An angle positioning mechanism 7 is also provided at the upper end of the pressure rod body 6 for positioning the pressing head 61.

[0025] The top surface of the winding fixture 3 is precisely designed based on the outer circumferential surface of the target stator block 5. When the stator block 5 is placed on it, its outer circumferential surface fits tightly against the contoured surface, achieving precise radial and circumferential positioning. This ensures that the center of the stator block 5 is coaxial with the center of the rotating spindle 2, and the angular position of the stator block 5 is also initially fixed. The double pressing shafts 41 of the pressing group, in conjunction with the linear bearings, form a linear guide mechanism that ensures that the pressing assembly 4 rises and falls smoothly and vertically under the drive of the pressing cylinder 44, without shaking or shifting, thus guaranteeing the stability and positioning accuracy of the pressing process. The pressing head 61 applies axial pressing force to the stator block 5, working in conjunction with the winding fixture 3 below to complete the complete positioning and clamping of the stator block 5 in the radial, circumferential, and axial directions, preventing it from jumping or loosening during rotational winding. The angle positioning mechanism 7 is used to accurately set and lock the angle position of the pressing head 61 relative to the base 1 before or during the initial pressing, so as to ensure that the contour surface of the pressing head 61 is aligned with the inner circumferential surface of the stator in the correct angle direction.

[0026] The modular stator winding fixture provided in this embodiment, through a winding jig 3 with a contoured surface, a pressing head 61 with an arc surface, and an angle positioning mechanism 7, combined with an overall pressing action driven by a cylinder, significantly improves the positioning accuracy, pressing reliability, and angle consistency of the modular stator 5 during the winding process, thereby effectively ensuring winding quality, production efficiency, and product yield. It is particularly suitable for the production of modular stators that require high-precision winding.

[0027] Preferably, the lower pressure shaft 41 is provided with a stroke control mechanism, which preferably includes a laser sensor and a limiting structure, to avoid overpressure damage to the block stator 5 or the rotating fixture, and also to prevent underpressure from causing the block stator 5 to loosen during the winding process; in this embodiment, the clamping force on different block stators 5 is consistent, which ensures the stability of the winding quality, facilitates the recording of pressing process data, and improves the degree of automation.

[0028] like Figure 3 The diagram shown is a structural schematic of the pressing assembly in this embodiment. The pressing assembly 4 also includes a pressing rod sleeve 45, which is mounted on the mounting plate 42 via bearings. The pressing rod body 6 is sleeved in the pressing rod sleeve 45. A strip-shaped limiting hole 46 is provided axially on the cylinder wall of the pressing rod sleeve 45. A movable shaft pin 62 is fixedly installed on the pressing rod body 6. The end of the movable shaft pin 62 passes through the strip-shaped limiting hole 46 and can slide therein. A pressing rod spring 63 is provided between the pressing rod sleeve 45 and the pressing rod body 6. The pressing rod spring 63 acts on the pressing rod body 6 to provide it with a downward elastic force.

[0029] In this embodiment, the pressure rod sleeve 45 provides a foundation for the elastic clamping of the pressure rod body 6, and the length of the strip-shaped limiting hole 46 limits the axial sliding stroke of the pressure rod body 6 relative to the pressure rod sleeve 45. A stepped hole can be provided on the inner side of the pressure rod sleeve 45, and a collar can be provided at the corresponding position of the pressure rod body 6. The pressure rod spring 63 can be installed between the stepped hole and the collar. When the cylinder drives the pressing assembly 4 to descend as a whole, the pressing head 61 first contacts the inner circumferential surface of the block stator 5. The pushing cylinder 44 drives the pressure rod sleeve 45 to continue to move downward, and the pressure rod sleeve 45 applies pressure to the pressure rod spring 63, so that the pressure rod body 6 further clamps the block stator 5 and gradually increases the pressure on the block stator 5, converting the rigid thrust of the pushing cylinder 44 into controllable elastic pressure, avoiding instantaneous rigid collision damage to the block stator 5. In this embodiment, the pressure received by the block stator 5 is evenly distributed, which can prevent local overpressure from causing the block stator 5 to misalign or move and fall.

[0030] In this embodiment, the angle positioning mechanism 7 includes a positioning disk 71 fixedly mounted on the mounting plate 42. The positioning disk 71 has a central hole for accommodating the movement of the pressure rod body 6 therein. The upper surface of the positioning disk 71 is provided with a positioning groove 72, and the upper end of the pressure rod body 6 is equipped with a positioning rod 64 that cooperates with the positioning groove 72.

[0031] In this design, the diameter of the central hole in the positioning disc 71 is larger than the diameter of the pressure rod body 6, ensuring that the pressure rod body 6 can move freely up and down within the central hole. A positioning groove 72 is positioned on the surface of the positioning disc 71, and its shape matches the shape of the positioning rod 64, allowing for precise engagement and angle positioning. During use, first, the positioning rod 64 is positioned in the positioning groove 72. Then, the downward-pushing cylinder 44 drives the downward-pressing assembly 4 to descend as a whole. During descent, the downward-pressing head 61 contacts the inner circumference of the stator 5 of the assembly block, and the pressure rod spring 63 begins to compress, providing elastic clamping force to precisely lock the angle of the pressure rod body 6. The positioning disc 71 continues to move downward with the mounting plate 42, causing the positioning rod 64 to disengage from the positioning groove 72. At this time, the winding spindle can drive the entire fixture to rotate for winding, while the positioning disc 71 remains stationary, not affecting the rotation of the pressure rod body 6. This embodiment achieves high-precision angle positioning through a mechanical grooving locking structure, ensuring high positioning accuracy, low cost, and stable and reliable operation.

[0032] In this embodiment, the positioning groove 72 is a V-shaped groove, and the positioning rod 64 is a round rod.

[0033] In this embodiment, the positioning groove 72 is a V-shaped groove with a large opening, which facilitates the entry of the round rod-shaped positioning rod 64, thus improving the convenience of positioning.

[0034] from Figure 1 It can be seen that the mounting plate 42 is also equipped with a cylinder wire clamping assembly 8, which is located on the side front of the pressing assembly 4 and is used to clamp the enameled wire.

[0035] The cylinder-clamping assembly 8 can be any mechanism capable of clamping enameled wire. After winding, the winding mechanism hangs the enameled wire on the cylinder-clamping assembly 8 and then cuts it. In this embodiment, the cylinder-clamping assembly 8 includes a cylinder, a clamping sleeve, and a pressing shaft 41. A round rod is mounted on the end of the pressing shaft 41, and the clamping sleeve has a groove that mates with the round rod. In this embodiment, the cylinder drives the pressing shaft 41 to move, thereby opening and closing the round rod and the groove, thus clamping and releasing the enameled wire. The cylinder-clamping assembly 8 is located to the side and front of the pressing assembly 4, close to the winding assembly, for easy wire hanging and cutting operations.

[0036] like Figure 4 The diagram shown is a structural schematic of the winding fixture in this embodiment. The winding fixture 3 includes a block-shaped body 31, and a fixed shaft 32 is provided at the center of the bottom of the block-shaped body 31. The fixed shaft 32 is coaxially mounted on the top of the rotating spindle 2 and fixed by a fixing pin 33.

[0037] The rotary spindle 2 has a mounting hole at its top for mounting. A fixing pin 33 is perpendicular to the axis to fix the rotary spindle 2 and the fixed shaft 32. The fixed shaft 32 is preferably integrally formed with the block body 31. Preferably, the rotary spindle 2 is equipped with an encoder or angle sensor to accurately control the number of winding coils and the angular position of the winding fixture 3, thereby improving positioning accuracy.

[0038] In this embodiment, the contoured surface is groove-shaped and is set on the upper surface of the block body 31; limiting baffles 34 are installed at the front and rear ends of the block body 31 to limit the axial direction of the block stator 5.

[0039] The contoured surface is a contoured surface of the outer circumference of the stator 5, specifically a groove. Since it cannot be limited along the axis of the stator 5, a limiting baffle 34 is required to fix the stator 5 within the water surface.

[0040] like Figure 5 and Figure 6 As shown, Figure 5 This is a side view of the winding fixture in this embodiment. Figure 6 for Figure 5 In the cross-sectional view along AA, the block body 31 has a mounting hole along the axis of the stator 5, and a wire-hanging shaft 35 that can move axially is built in. The limiting baffles 34 are all provided with through holes to accommodate the end of the wire-hanging shaft 35. One end of the wire-hanging shaft 35 is the wire-hanging end, and the other end is mounted with a push rod 37 that passes through the rotating main shaft 2 in parallel through a fixing block 36. A thrust spring 38 is also provided in the mounting hole to keep the wire-hanging end in the extended state in normal operation.

[0041] In this embodiment, when there are no pins on the stator 5 of the assembly block to be wound, a wire-hanging shaft 35 can be used. The wire-hanging end of the wire-hanging shaft 35 is normally kept extended out of the limiting baffle 34, providing a fixed wire-hanging point. In this embodiment, the push spring 38 can be compressed by an externally driven push rod 37, thereby realizing the retraction of the wire-hanging end, completing the automatic unhooking and releasing of the enameled wire. Preferably, there are two wire-hanging shafts 35, which are connected together to the fixing block 36 to improve the movement stability of the push rod 37. The push rod 37 passes through the rotating main shaft 2 and rotates synchronously with the rotating main shaft 2, which can improve the overall dynamic balance performance and simplify the overall structure.

[0042] like Figure 7 The diagram shown is a schematic diagram of the installation of the push rod cylinder in this embodiment. In this embodiment, a push rod cylinder 9 for pushing the push rod 37 to move is provided on the base 1, and a detection component 91 for detecting the position of the hanging shaft 35 is installed above the push rod cylinder 9.

[0043] The base 1 is equipped with a push rod cylinder 9 to push the push rod 37, completing the wire removal operation. A detection component 91 can detect whether the push rod 37 is aligned with the push rod cylinder 9, preventing damage to the rotating spindle 2 from the push rod cylinder 9. The detection component 91 can also detect the angular position of the axial fixture, further improving positioning accuracy. The height of the push rod cylinder 9 and the detection component 91 on the base 1 can be adjusted via a bracket to match the position of the push rod 37.

[0044] In this embodiment, the push rod 37 and the fixing pin 33 are installed at different heights, and their axes are perpendicular to each other.

[0045] In this embodiment, the installation method can prevent the fixing pin 33 from interfering with the push rod cylinder 9, and can also reduce the stress concentration caused by the opening of the rotating spindle 2, thereby improving the strength of the rotating spindle 2.

[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A modular stator winding fixture, characterized in that, Includes a base (1), on which a rotating spindle (2) is mounted, and a winding fixture (3) is mounted on the top of the rotating spindle (2), and a pressing assembly (4) is provided above the winding fixture (3). The top surface of the winding fixture (3) is a contoured surface, used to fit the outer circumferential surface of the block stator (5); the pressing assembly (4) includes two pressing shafts (41) mounted on both ends of the base (1) by linear bearings. The upper ends of the two pressing shafts (41) are equipped with mounting plates (42), and the lower ends are equipped with horizontal plates (43). A pushing cylinder (44) is installed between the base (1) and the horizontal plates (43); a pressure rod body (6) coaxial with the rotating spindle (2) is rotatably mounted on the mounting plate (42). A pressing head (61) with a circular arc surface is installed at the bottom of the pressing rod body (6). The pressing head (61) is used to fit and press the inner circumferential surface of the block stator (5); an angle positioning mechanism (7) is also provided at the upper end of the pressing rod body (6) for positioning the pressing head (61).

2. The modular stator winding fixture according to claim 1, characterized in that, The pressing assembly (4) further includes a pressure rod sleeve (45), which is mounted on the mounting plate (42) via a bearing. The pressure rod body (6) is sleeved in the pressure rod sleeve (45). A strip-shaped limiting hole (46) is provided axially on the wall of the pressure rod sleeve (45). A movable shaft pin (62) is fixedly installed on the pressure rod body (6). The end of the movable shaft pin (62) passes through the strip-shaped limiting hole (46) and can slide therein. A pressure rod spring (63) is provided between the pressure rod sleeve (45) and the pressure rod body (6). The pressure rod spring (63) acts on the pressure rod body (6) to provide it with a downward elastic force.

3. The modular stator winding fixture according to claim 2, characterized in that, The angle positioning mechanism (7) includes a positioning disk (71) fixedly installed on the mounting plate (42). The positioning disk (71) has a central hole for accommodating the movement of the pressure rod body (6) therein. The upper surface of the positioning disk (71) is provided with a positioning groove (72). The upper end of the pressure rod body (6) is equipped with a positioning rod (64) that cooperates with the positioning groove (72).

4. The modular stator winding fixture according to claim 3, characterized in that, The positioning groove (72) is a V-shaped groove, and the positioning rod (64) is a round rod.

5. The modular stator winding fixture according to claim 1, characterized in that, The mounting plate (42) is also provided with a cylinder wire clamping assembly (8), which is located on the side front of the pressing assembly (4) and is used to clamp the enameled wire.

6. The modular stator winding fixture according to claim 1, characterized in that, The winding fixture (3) includes a block body (31), and a fixed shaft (32) is provided at the bottom center of the block body (31). The fixed shaft (32) is coaxially installed with the rotating spindle (2) and fixed by a fixing pin (33).

7. The modular stator winding fixture according to claim 6, characterized in that, The contoured surface is groove-shaped and is set on the upper surface of the block body (31); the front and rear ends of the block body (31) are equipped with limiting baffles (34) for limiting the axial direction of the block stator (5).

8. The modular stator winding fixture according to claim 7, characterized in that, The block body (31) has an installation hole along the axis of the block stator (5), and a wire hanging shaft (35) that can move axially is built in. The limiting baffles (34) are all provided with through holes to accommodate the end of the wire hanging shaft (35). One end of the wire hanging shaft (35) is the wire hanging end, and the other end is connected to a push rod (37) that passes through the rotating main shaft (2) in parallel through a fixing block (36). A thrust spring (38) is also provided in the installation hole to keep the wire hanging end in the extended state in normal condition.

9. The modular stator winding fixture according to claim 8, characterized in that, The base (1) is provided with a push rod cylinder (9) for pushing the push rod (37) to move, and a detection component (91) for detecting the position of the hanging shaft (35) is installed above the push rod cylinder (9).

10. The modular stator winding fixture according to claim 8, characterized in that, The push rod (37) is installed perpendicular to the fixing pin (33).

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