A winding tool for a star imitator coil

Abstract

This invention provides a winding fixture for a stellarator coil, comprising a winding mold and a radial adjustment component. The winding mold includes an annular support base, an inner side plate, and an outer side plate. The inner and outer side plates are spaced apart along the radial direction of the support base and are fixed to the top of the support base. The inner side plate has multiple connecting portions spaced apart along its circumference, each connecting portion including multiple first threaded through holes spaced apart along the axial direction of the inner side plate. The radial adjustment component is inserted into one of the first threaded through holes of a corresponding connecting portion and threadedly connected to the first threaded through hole. The end face of the radial adjustment component near the outer side plate abuts against the inner surface of the outer side plate or the inner surface of the already wound conductor. By cooperating with the multiple rows of first threaded through holes in the circumference and axial direction of the inner side plate and the radial adjustment component, the radial dimension of the winding can be precisely adjusted, achieving accurate radial positioning of the coil, improving the coil forming quality and magnetic field configuration accuracy, and enhancing the overall performance of the stellarator device.

Description

Technical Field

[0001] This utility model belongs to the technical field of conductor coil winding and forming, and specifically relates to a winding fixture for stellarator coils. Background Technology

[0002] As an advanced magnetic confinement fusion device, the stellarator's magnetic field configuration relies primarily on the precise construction of external coils. These coils typically possess complex configurations with three-dimensional spatial twisting, varying curvature, and irregular cross-sections. The conductors used in these coils often require simultaneous compliance with multiple stringent requirements, including high conductivity, high strength, low high-temperature loss, and excellent insulation. The conductors themselves have high stiffness and limited bending performance, making it difficult to achieve continuous forming with large curvature and varying angles using conventional processes. Constrained by the irregular spatial configuration of the coils and the properties of the conductor materials, current winding processes often rely solely on simple tooling for initial positioning of the coil body. This leads to easy displacement, shifting, or localized warping of the coils during winding, forming, and assembly. Consequently, the fit between the coil and the supporting structure or forming mold is poor, resulting in uneven gaps, localized suspensions, and difficulty in ensuring dimensional accuracy. These issues ultimately affect the coil forming quality and the accuracy of the magnetic field configuration, hindering the overall performance improvement of the stellarator device. Utility Model Content

[0003] The purpose of this invention is to solve the problem that in the existing winding process, the coil body is mostly positioned only by simple tooling, which makes the coil prone to displacement, movement or local warping during winding, forming and assembly, affecting the coil forming quality and magnetic field configuration accuracy, and restricting the improvement of the overall performance of the stellarator device.

[0004] To solve the above-mentioned technical problems, this utility model discloses a winding fixture for a stellarator coil. The stellarator coil is formed by winding a conductor. The winding fixture includes a winding mold and a radial adjustment component. The winding mold includes a support base, an inner side plate, and an outer side plate, all of which are annular. The inner side plate and the outer side plate are spaced apart along the radial direction of the support base and are all fixed to the top of the support base. The outer side of the inner side plate is adapted to fit the inner side of the stellarator coil, and the inner side plate is provided with multiple connecting parts spaced apart along its circumference. Each connecting part includes multiple first threaded through holes spaced apart along the axial direction of the inner side plate. The radial adjustment component is used to pass through one of the first threaded through holes of the corresponding connecting part and is threadedly connected to the first threaded through hole. The end face of the radial adjustment component near the outer side plate abuts against the inner side of the outer side plate or the inner side of the conductor that has been wound.

[0005] By employing the above technical solution, the first threaded through holes of multiple circumferential connecting parts of the inner side plate and the cooperation of the radial adjustment component allow the end face of the radial adjustment component near the outer side plate to abut against the inner surface of the outer side plate or the inner surface of the already wound conductor. This enables precise adjustment of the winding radial dimension and gap, thereby limiting the radial displacement of the conductor and preventing radial offset, slippage, or local warping of the conductor during winding, forming, and assembly into a coil. This improves the coil forming quality and magnetic field configuration accuracy, enhancing the overall performance of the stellarator device. Furthermore, the layout of multiple connecting parts and multiple first threaded through holes adapts to the winding requirements of stellarator coils of different specifications, offering strong versatility and flexible adjustment, effectively reducing winding errors and improving coil forming quality and consistency.

[0006] According to another specific embodiment of the present invention, the stellarator coil winding fixture disclosed in this embodiment of the present invention includes a radial adjustment component comprising: a first bolt and a first pad. The first bolt is used to pass through a first threaded through hole in a corresponding connecting part and is threadedly connected to the first threaded through hole. The first pad is detachably fixed to one end of the first bolt near the outer plate, and the end face of the first pad away from the first bolt constitutes the end face of the radial adjustment component near the outer plate.

[0007] Using the above technical solution, the first pad is detachably fixed to the end of the first bolt near the outer plate. Different thicknesses and materials of the first pad can be selected according to the conductor specifications and the number of winding layers, making it more adaptable and avoiding direct pressure damage to the conductor from the bolt. The end face of the first pad contacts the conductor or the outer plate, increasing the force-bearing area, dispersing pressure, improving the stability and coaxiality of the winding process, and further improving the winding accuracy and forming quality of the stellarator coil.

[0008] According to another specific embodiment of the present invention, the stellarator coil winding fixture disclosed in this embodiment further includes: an auxiliary pressure plate, the two ends of which are detachably and fixedly connected to the top of the inner plate and the top of the outer plate, respectively, and the auxiliary pressure plate is provided with a plurality of second threaded through holes at intervals along its length; an axial adjustment member, which is used to pass through a second threaded through hole and is threadedly connected to the second threaded through hole, and the end face of the axial adjustment member near the support base abuts against the top surface of the support base or the top surface of the conductor that has been wound.

[0009] By adopting the above technical solution, the two ends of the auxiliary pressure plate are fixedly connected to the inner and outer side plates respectively, which can increase the overall structural rigidity of the tooling, suppress deformation during winding, and improve the stability of the tooling. The axial adjustment component cooperates with the second threaded through hole of the auxiliary pressure plate to limit the axial displacement of the conductor, achieve precise axial height adjustment, and axially press and position the conductor to prevent axial movement and interlayer misalignment during winding. The multiple second threaded through holes on the auxiliary pressure plate are suitable for winding stellarator coils with different wire diameters. The axial adjustment component is threaded to the second threaded through hole to adapt to winding stellarator coils with different layers, which is flexible, versatile, and significantly improves the axial accuracy and interlayer consistency of coil winding.

[0010] According to another specific embodiment of the present invention, the stellarator coil winding fixture disclosed in this embodiment of the present invention includes an axial adjustment component comprising: a second bolt and a second pad. The second bolt is used to pass through a second threaded through hole in an auxiliary pressure plate and is threadedly connected to the second threaded through hole. The second pad is detachably fixed to one end of the second bolt near the support seat, and the end face of the second pad away from the second bolt constitutes the end face of the axial adjustment component near the support seat.

[0011] Using the above technical solution, the second pad is detachably fixed to the end of the second bolt near the support. Different thicknesses and materials of the second pad can be selected according to the conductor specifications and the number of winding layers, resulting in greater adaptability and preventing direct pressure damage to the conductor from the bolt. The end face of the second pad contacts the conductor or support, increasing the stress area, dispersing pressure, and effectively preventing axial movement of the coil and interlayer misalignment, further improving the axial forming accuracy and winding quality of the stellarator coil.

[0012] According to another specific embodiment of the present invention, the stellarator coil winding fixture disclosed in this embodiment of the present invention has waist-shaped holes at both ends of the auxiliary pressure plate along its length direction. The auxiliary pressure plate is threaded to the inner side plate and the outer side plate through the two waist-shaped holes respectively, so that the auxiliary pressure plate can be fixedly connected to the inner side plate and the outer side plate with different radial spacing.

[0013] The above technical solution employs an oblong hole structure at both ends of the auxiliary pressure plate, allowing for radial position adjustment to accommodate different radial spacings of the inner and outer side plates, thus improving versatility. The oblong holes, combined with threaded connections, ensure flexible adjustment and reliable fixation.

[0014] According to another specific embodiment of the present invention, the stellarator coil winding fixture disclosed in this embodiment of the present invention has a plurality of second threaded through holes in the auxiliary pressure plate located between two waist-shaped holes; the plurality of second threaded through holes are evenly spaced along the length direction of the auxiliary pressure plate.

[0015] By adopting the above technical solution, multiple second threaded through holes are evenly spaced along the length direction, which can realize the circumferential multi-point uniform positioning and clamping of the axial adjustment component, and avoid uneven local force on the coil formed by winding.

[0016] According to another specific embodiment of the present invention, the stellarator coil winding fixture disclosed in this embodiment of the present invention has an inner side plate composed of a plurality of inner side plate segments sequentially spliced ​​along its circumference, each inner side plate segment being threadedly connected to a support seat and having at least one connecting part; and / or, an outer side plate composed of a plurality of outer side plate segments sequentially spliced ​​along its circumference, each outer side plate segment being threadedly connected to a support seat.

[0017] The above technical solution employs a segmented splicing structure for the inner and outer side plates, significantly reducing the difficulty of individual component processing, facilitating manufacturing, assembly, and disassembly, and lowering tooling manufacturing costs. Each segment has an independent threaded connection support base, ensuring secure positioning, flexible assembly and disassembly, and allowing for individual replacement of damaged sections, resulting in convenient maintenance and high utilization.

[0018] According to another specific embodiment of the present invention, the stellarator coil winding fixture disclosed in this embodiment of the present invention further includes a clamping member located on the outer periphery of the outer plate, used to restrict the movement of the conductor in the radial direction of the outer plate; the clamping member includes a screw and a U-shaped clamping body, the U-shaped clamping body includes a first clamping arm and a second clamping arm arranged opposite to each other and spaced apart, and a connecting arm connecting the first clamping arm and the second clamping arm; the first clamping arm is located on the outer periphery of the outer plate and has a third threaded through hole, the second clamping arm is located between the outer plate and the inner plate, one end of the screw passes through the third threaded through hole, and after being threadedly connected to the third threaded through hole, it abuts against the outer surface of the outer plate, and the conductor abuts between the inner surface of the second clamping arm and the inner surface of the outer plate or the inner surface of the conductor that has been wound.

[0019] By employing the above technical solution, the additional clamping components can restrict the radial movement of the conductor on the outer plate. This is particularly effective for temporarily clamping and fixing conductors that have already been wound or are not yet wound, preventing radial displacement of the coil during subsequent processing or adjustment. The U-shaped clamping body of the clamping component, in conjunction with the screw, forms an outer peripheral clamping structure, reliably locking the conductor radially from the outside, effectively preventing radial displacement, springing, and misalignment of the conductor during winding. Adjustable screw threads allow for precise and controllable clamping force, adapting to different wire diameters and winding layers. The flexible clamping and high versatility further improve the consistency and quality of stellarator coil winding.

[0020] According to another specific embodiment of the present invention, the stellarator coil winding fixture disclosed in the embodiment of the present invention has a handle at the other end of the screw; an inclined surface is formed on the outer side of the end of the second clamping arm away from the connecting arm; in a first direction, the inclined surface gradually tilts towards the side closer to the first clamping arm, and the first direction is the direction of the second clamping arm from the end closer to the connecting arm to the end away from the connecting arm.

[0021] The above technical solution features a handle at the end of the screw, allowing for quick and manual adjustment of the clamping force without tools, thus improving ease of operation and winding efficiency. The end of the second clamping arm has an inclined surface, forming a guide and closing structure that facilitates smooth entry of the conductor into the clamping area, preventing jamming or scratching.

[0022] According to another specific embodiment of the present invention, the stellarator coil winding fixture disclosed in this embodiment further includes: a rotary platform, which is rotatable about its axis; a support base detachably fixed on the rotary platform; and / or, a plurality of radial adjustment members, which are spaced apart circumferentially along the inner side plate; a plurality of axial adjustment members and auxiliary pressure plates correspondingly arranged in the winding fixture, which are spaced apart circumferentially along the inner side plate; and a plurality of clamping members of the winding fixture, which are spaced apart circumferentially along the outer side plate.

[0023] Using the above technical solution, the support base can be detachably fixed to the rotary platform, enabling continuous circumferential rotational winding of the coil without repeated disassembly and repositioning. This results in continuous, efficient winding with higher coaxiality. Radial adjustment components, axial adjustment components, auxiliary pressure plates, and clamping components are arranged in multiple sets at intervals along the circumference, forming uniform positioning and clamping throughout the circumferential region, avoiding uneven local stress and conductor deviation. Multi-point collaborative constraints and precise three-dimensional positioning in the radial, axial, and circumferential directions significantly improve the winding accuracy, interlayer flatness, and overall consistency of the stellarator coil, making it suitable for stable batch winding of large-size, high-precision coils. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the stellarator coil winding fixture according to an embodiment of the present invention (showing the winding of the first turn of the coil).

[0025] Figure 2 This is another schematic diagram of the winding fixture for the stellarator coil according to an embodiment of the present invention (showing the winding of the second turn of the coil).

[0026] Figure 3 This is a partially enlarged structural diagram of the stellarator coil winding fixture according to an embodiment of the present invention (showing the winding of the second turn of the coil).

[0027] Figure 4This is a partial cross-sectional view of the stellarator coil winding fixture according to an embodiment of the present invention (showing the winding of the first turn of the coil).

[0028] Figure 5 Another partial cross-sectional view of the stellarator coil winding fixture of this utility model embodiment (showing the winding of the first turn of the coil).

[0029] Figure 6 This is a schematic diagram of the auxiliary pressure plate and axial adjustment component of the stellarator coil winding fixture according to an embodiment of the present invention.

[0030] Figure 7 This is a schematic diagram of the clamping component of the stellarator coil winding fixture according to an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 10. Conductor; 100. Winding mold; 110. Support base; 120. Inner side plate; 121. Connecting part; 1211. First threaded through hole; 122. Inner side plate segment; 130. Outer side plate; 131. Outer side plate segment; 200. Radial adjustment component; 210. First bolt; 220. First pad; 300. Auxiliary pressure plate; 310. Second threaded through hole; 320. Waist-shaped hole; 400. Axial adjustment component; 410. Second bolt; 420. Second pad; 500. Clamping component; 510. Screw; 520. U-shaped clamp; 521. First clamping arm; 5211. Third threaded through hole; 522. Second clamping arm; 5221. Inclined surface; 523. Connecting arm; 530. Handle; 600. Rotary platform. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0034] The stellarator coil winding fixture provided by this utility model is used to wind the stellarator coil by winding a conductor, such as... Figures 1-3 As shown, the winding fixture includes a winding mold 100 and a radial adjustment component 200. The winding mold 100 includes a support base 110, an inner side plate 120, and an outer side plate 130, all of which are annular. The inner side plate 120 and the outer side plate 130 are spaced apart along the radial direction of the support base 110 and are all fixed to the top of the support base 110.

[0035] It should be noted that the top surface of the support base 110 is adapted to fit the bottom surface of the stellarator coil to be wound, and the support base 110 provides a basic curved surface positioning reference for coil winding. The outer side of the inner plate 120 is adapted to fit the inner side of the stellarator coil, and the inner side of the outer plate 130 is adapted to fit the outer side of the stellarator coil. The radial spacing between the inner plate 120 and the outer plate 130 of the support base 110 is adapted to the radial width of the stellarator coil. The axial height of the inner plate 120 and the outer plate 130 of the support base 110 is set according to the axial height of the stellarator coil to be wound, as long as the height of the inner plate 120 and the outer plate 130 is higher than the axial height of the stellarator coil. The fixed connection methods between the inner plate 120, the outer plate 130 and the support base 110 include, but are not limited to, threaded connection, snap-fit, welding, etc.

[0036] like Figure 1 and Figure 2 As shown, the inner side plate 120 is provided with a plurality of connecting portions 121 at intervals along its circumference, such as... Figure 3 and Figure 4 As shown, each connecting portion 121 includes a plurality of first threaded through holes 1211 spaced apart along the axial direction of the inner side plate 120; a radial adjusting member 200 is used to pass through one of the first threaded through holes 1211 of the corresponding connecting portion 121 and is threadedly connected to the first threaded through hole 1211, and the radial adjusting member 200 is located near one end face of the outer side plate 130. Figure 4 The left end face of the radial adjustment member 200 abuts against the inner side of the outer plate 130 or the inner side of the conductor 10 that has been wound.

[0037] It should be noted that the radial adjustment member 200 is a component with an external thread adapted to the internal thread of the first threaded through hole 1211. Specifically, it can be a bolt, a screw, or other component with external threads, or it can be an assembly including bolts and other abutment parts, as long as it can achieve threaded connection with the first threaded through hole 1211. This embodiment does not impose specific limitations on this. Multiple radial adjustment members 200 can be provided, and these multiple radial adjustment members 200 are spaced apart circumferentially along the inner side plate 120. They can be provided one-to-one with multiple connecting parts 121, or they can be provided one-to-one with some of the multiple connecting parts 121. If the conductor 10 is in the radial direction of the outer side plate 130 ( Figure 4 When the conductor 10 is wound with the first turn of the coil in the X direction, the left end face of the radial adjustment member 200 abuts against the inner side of the outer plate 130; if the conductor 10 is wound with the second or more turns of the coil in the radial direction of the outer plate 130, the left end face of the radial adjustment member 200 abuts against the inner side of the conductor 10 that has been wound.

[0038] Specifically, through the cooperation of the first threaded through holes 1211 of the multiple circumferential connecting parts 121 of the inner side plate 120 and the radial adjustment member 200, the end face of the radial adjustment member 200 near the outer side plate 130 abuts against the inner side of the outer side plate 130 or the inner side of the already wound conductor 10. This allows for precise adjustment of the winding radial dimension and gap, thereby limiting the radial displacement of the conductor 10. This prevents radial offset, slippage, or local warping of the conductor 10 during winding, forming, and assembling into a coil, improving the coil forming quality and magnetic field configuration accuracy, and enhancing the overall performance of the stellarator device. Furthermore, the layout of the multiple connecting parts 121 and multiple first threaded through holes 1211 adapts to the winding requirements of stellarator coils of different specifications, offering strong versatility and flexible adjustment, effectively reducing winding errors and improving coil forming quality and consistency. In addition, since the outer side of the inner plate is adapted to the inner side of the stellarator coil, and the first threaded through hole is set on the inner plate, the radial clamping of the conductor can be achieved simply by the radial adjustment component cooperating with the first threaded through hole on the inner plate. No other components are required. The structure of the winding fixture is simple, and the completed stellarator coil directly abuts radially between the outer and inner plates, resulting in high winding accuracy of the stellarator coil.

[0039] Based on the structure of the above-mentioned stellarator coil winding fixture, the specific winding method for using it to wind the stellarator coil includes: before winding the stellarator coil, the conductor 10 is tangentially introduced from the winding starting point of the winding mold 100; after the position is adjusted to the correct position, the conductor 10 that has undergone pretreatment (including cleaning, sandblasting, insulation wrapping, etc.) is taken, and a set length is reserved for the pre-bending processing of the wire end. Then the winding of the conductor 10 begins, and the radial adjustment member 200 is inserted into a first threaded through hole 1211 of the corresponding connecting part 121, and the radial adjustment member 200 is tightened so that the end face of the radial adjustment member 200 near the outer side plate 130 abuts against the inner side surface of the outer side plate 130, thereby limiting the radial displacement of the conductor 10 and achieving precise radial fixation of the conductor 10 on the winding mold 100, ensuring that the trajectory of the conductor 10 is completely matched with the radial shape of the winding mold 100 during the subsequent winding process. Continue winding conductor 10, engaging and tightening other radial adjustment members 200 with a first threaded through hole 1211 of the corresponding connecting part 121, until the winding of the first turn of the coil is completed. For the second turn of the coil, starting from the lead end of the first turn, gradually remove the radial adjustment members 200 before winding, and engage and tighten them with the first threaded through hole 1211 of the new corresponding connecting part 121. Repeat the above winding operation to finally complete the overall winding of the stellarator coil.

[0040] In one embodiment of this utility model, such as Figure 3 and Figure 4As shown, the radial adjustment member 200 includes: a first bolt 210 and a first pad 220. The first bolt 210 is used to pass through a first threaded through hole 1211 in the corresponding connecting part 121 and is threadedly connected to the first threaded through hole 1211; the first pad 220 is detachably fixed to one end of the first bolt 210 near the outer side plate 130, i.e. Figure 4 The left end of the first bolt 210, and the end face of the first pad 220 away from the first bolt 210. Figure 4 The left end face of the first pad 220 forms the end face of the radial adjustment member 200 near the outer side plate 130.

[0041] It should be noted that the first spacer 220 and the first bolt 210 are detachably fixedly connected. Different thicknesses and materials of the first spacer 220 can be selected according to the specifications of the conductor 10 and the number of winding layers, resulting in greater adaptability and preventing the first bolt 210 from directly pressing and damaging the conductor 10. The end face area of ​​the first spacer 220 is larger than that of the first bolt 210. The end face of the first spacer 220 contacts the conductor 10 or the outer plate 130, increasing the force-bearing area, dispersing pressure, improving the stability and coaxiality of the winding process, and further improving the winding accuracy and forming quality of the stellarator coil. Furthermore, the first spacer 220 can be made of materials with insulating and rigid properties, such as composite materials made of glass fiber and epoxy resin (G10), alumina, etc. This design achieves electrical isolation by utilizing the insulation of the first pad 220, preventing direct electrical conduction between the metal first bolt 210 and the outer plate 130 or the already wound conductor 10, thus meeting insulation safety requirements. Furthermore, the rigidity of the first pad 220 provides stable support, ensuring radial adjustment accuracy and structural reliability, while also protecting the contact surface from wear and deformation. In one specific embodiment, the first pad 220 is made of G10.

[0042] In one embodiment of this utility model, such as Figures 1-6 As shown, the winding fixture also includes: an auxiliary pressure plate 300, the two ends of which are detachably and fixedly connected to the top of the inner plate 120 and the top of the outer plate 130, respectively, along its length. Figures 3-6 As shown, the auxiliary pressure plate 300 is along its length direction ( Figure 6 Multiple second threaded through holes 310 are provided at intervals in the Z direction; an axial adjusting member 400 is used to pass through a second threaded through hole 310 and is threadedly connected to the second threaded through hole 310, and the axial adjusting member 400 is located near the end face of the support base 110. Figure 5 The bottom surface of the central axial adjustment member 400 abuts against the top surface of the support 110 or the top surface of the conductor 10 that has been wound.

[0043] It should be noted that the detachable fixing connection methods between the auxiliary pressure plate 300 and the inner side plate 120 and the outer side plate 130 include, but are not limited to, threaded connections and snap-fit ​​connections. In one specific embodiment, such as Figure 3 and Figure 6 As shown, the auxiliary pressure plate 300 has oblong holes 320 at both ends along its length. The auxiliary pressure plate 300 is threadedly connected to the inner side plate 120 and the outer side plate 130 through the two oblong holes 320, respectively, so that the auxiliary pressure plate 300 can be fixedly connected to the inner side plate 120 and the outer side plate 130 with different radial spacings. Here, the radial spacing between the inner side plate 120 and the outer side plate 130 refers to the distance between the inner side plate 120 and the outer side plate 130 in the radial direction of the support base 110. The oblong holes 320 of the auxiliary pressure plate 300, combined with the threaded connection, allow for radial position adjustment to accommodate different radial spacings of the inner side plate 120 and the outer side plate 130, improving versatility. Furthermore, the threaded connection ensures flexible adjustment and reliable fixation.

[0044] It should be further noted that the number of second threaded through holes 310 in the auxiliary pressure plate 300 is set according to the coil winding size requirements, and this embodiment does not impose specific limitations on this. The axial adjustment member 400 is a component with an external thread adapted to the internal thread of the second threaded through hole 310. Specifically, it can be a bolt, screw, or other component with external threads, or it can be an assembly including bolts and other abutment parts, as long as it can achieve threaded connection with the second threaded through hole 310. This embodiment does not impose specific limitations on this. The auxiliary pressure plate 300 and the axial adjustment member 400 can have multiple sets, and the multiple sets are arranged at circumferential intervals along the inner side plate 120. If the conductor 10 is in the axial direction of the support 110 ( Figure 5 When the conductor 10 is wound with the first turn of the coil in the Y direction, the bottom end face of the axial adjustment member 400 abuts against the top surface of the support base 110; if the conductor 10 is wound with the second or more turns of the coil in the axial direction of the support base 110, the bottom end face of the axial adjustment member 400 abuts against the top surface of the conductor 10 that has been wound.

[0045] Specifically, the two ends of the auxiliary pressure plate 300 are fixedly connected to the inner side plate 120 and the outer side plate 130, respectively, which can increase the overall structural rigidity of the tooling, suppress deformation during winding, and improve the stability of the tooling. The axial adjustment component 400 cooperates with the second threaded through hole 310 of the auxiliary pressure plate 300 to limit the axial displacement of the conductor 10, achieve precise adjustment of the axial height, and perform axial clamping and positioning of the conductor 10 to prevent axial movement and interlayer misalignment during winding. The multiple second threaded through holes 310 on the auxiliary pressure plate 300, together with the axial adjustment component 400, abut against the top surface of the conductor or the top surface of the support 110 at different positions, adapting to the winding of stellarator coils with different wire diameters. The axial adjustment component 400 is threadedly connected to the second threaded through hole 310, adapting to the winding of stellarator coils with different layers, with flexible adjustment and strong versatility, significantly improving the axial accuracy and interlayer consistency of coil winding.

[0046] Based on the structure of the above-mentioned stellarator coil winding fixture, the specific winding method for using it to wind the stellarator coil further includes: before or after the conductor 10 is radially and precisely fixed on the winding mold 100, it further includes: inserting the axial adjustment member 400 into a second threaded through hole 310 of the auxiliary pressure plate 300, and tightening the axial adjustment member 400 so that the axial adjustment member 400 is close to one end face of the support base 110. Figure 5 The bottom surface of the axial adjustment component 400 abuts against the top surface of the support 110, thereby limiting the axial displacement of the conductor 10 and achieving precise axial fixation of the conductor 10 on the winding mold 100, ensuring that the trajectory of the conductor 10 is completely matched with the axial shape of the winding mold 100 during the subsequent winding process.

[0047] In one embodiment of this utility model, such as Figure 5 As shown, the axial adjustment component 400 includes: a second bolt 410 and a second pad 420. The second bolt 410 is used to pass through a second threaded through hole 310 in the auxiliary pressure plate 300 and is threadedly connected to the second threaded through hole 310; the second pad 420 is detachably fixed to one end of the second bolt 410 near the support base 110, i.e. Figure 5 The bottom end of the second bolt 410, and the end face of the second pad 420 away from the second bolt 410. Figure 5 The bottom end face of the second pad 420 forms the end face of the axial adjustment member 400 near the support base 110, that is, the bottom end face of the second pad 420 abuts against the top surface of the support base 110 or the top surface of the conductor 10 that has been wound.

[0048] Specifically, the second pad 420 is detachably fixed to the second bolt 410. Different thicknesses and materials of the second pad 420 can be selected according to the conductor 10 specifications and the number of winding layers, resulting in greater adaptability and preventing the second bolt 410 from directly pressing and damaging the conductor 10. The end face area of ​​the second pad 420 is larger than that of the second bolt 410. The end face of the second pad 420 contacts the conductor 10 or the support base 110, increasing the force-bearing area, dispersing pressure, and effectively preventing axial movement of the coil and interlayer misalignment, further improving the axial forming accuracy and winding quality of the stellarator coil.

[0049] It should be noted that the second pad 420 can be made of materials with insulating and rigid properties, such as composite materials made of glass fiber and epoxy resin (referred to as G10), alumina, etc. This serves two purposes: firstly, the insulating property of the second pad 420 provides electrical isolation, preventing direct electrical conduction between the metal second bolt 410 and the support base 110 or the already wound conductor 10, thus meeting insulation safety requirements; secondly, the rigidity of the second pad 420 provides stable support, ensuring axial adjustment accuracy and structural reliability, while protecting the contact surface from wear and deformation. In one specific embodiment, the second pad 420 is made of G10.

[0050] In one specific implementation, such as Figure 3 and Figure 6 As shown, the auxiliary pressure plate 300 has multiple second threaded through holes 310 located between two oblong holes 320; the multiple second threaded through holes 310 are located along the length direction of the auxiliary pressure plate 300 ( Figure 6 The Z-direction is evenly spaced. This allows for 400° circumferential multi-point uniform positioning and clamping of the axial adjustment components, avoiding uneven local stress on the coil formed during winding.

[0051] In one specific implementation, such as Figure 1 and Figure 2 As shown, the inner side plate 120 is composed of a plurality of inner side plate segments 122 sequentially spliced ​​along its circumference. Each inner side plate segment 122 is threadedly connected to the support base 110 and is provided with at least one connecting part 121. The outer side plate 130 is composed of a plurality of outer side plate segments 131 sequentially spliced ​​along its circumference. Each outer side plate segment 131 is threadedly connected to the support base 110.

[0052] It should be noted that each inner plate segment 122 can have the same number of connecting parts 121, or it can have a different number of connecting parts 121. For example, two or more connecting parts 121 can be provided on the inner plate segment 122 with a larger bending angle to ensure better radial limiting effect of the conductor 10. Each inner plate segment 122 can have only one connecting part 121, or it can have two or more connecting parts 121, as long as the radial displacement of the conductor 10 can be limited. This embodiment does not impose specific limitations on this. The number of inner plate segments 122 and the outer plate segment 131 are determined according to the size of the stellarator coil.

[0053] Specifically, the inner side plate 120 and the outer side plate 130 adopt a segmented splicing structure, which greatly reduces the processing difficulty of individual parts, facilitates processing, manufacturing, assembly and disassembly, and reduces tooling manufacturing costs. Each inner side plate segment 122 and each outer side plate segment 131 is independently threaded connected to the support seat 110, which is firmly positioned, flexible in disassembly and assembly, allows for individual replacement of damaged sections, and is convenient to maintain and has a high utilization rate.

[0054] In one embodiment of this utility model, such as Figures 1-4 , Figure 5 and Figure 7 As shown, the winding fixture also includes a clamping member 500, which is located on the outer periphery of the outer plate 130 and is used to restrict the radial movement of the conductor 10 within the outer plate 130. Figure 5 and Figure 7 As shown, the clamping member 500 includes a screw 510 and a U-shaped clamping body 520. The screw 510 is provided with an external thread. The U-shaped clamping body 520 includes a first clamping arm 521 and a second clamping arm 522 that are arranged opposite to each other and spaced apart, and a connecting arm 523 that connects the first clamping arm 521 and the second clamping arm 522. The first clamping arm 521 is located on the outer periphery of the outer side plate 130 and has a third threaded through hole 5211. The second clamping arm 522 is located between the outer side plate 130 and the inner side plate 120. One end of the screw 510 ( Figure 5 The right end of the middle screw 510 passes through the third threaded through hole 5211 and is threadedly connected to the third threaded through hole 5211. It then abuts against the outer side of the outer plate 130, and the conductor 10 abuts between the inner side of the second clamping arm 522 and the inner side of the outer plate 130 or the inner side of the conductor 10 that has been wound.

[0055] Specifically, the additional clamping component 500 restricts the radial movement of the conductor 10 on the outer plate 130, especially for temporarily clamping and fixing the conductor 10 that has been wound or has not yet been wound. The U-shaped clamping body 520 of the clamping component 500 cooperates with the screw 510 to form an outer peripheral clamping structure, which reliably locks the conductor 10 radially from the outside, effectively preventing the conductor 10 from radially shifting outward, springing open, or misaligning during the winding process. The screw 510's thread adjustment enables precise and controllable clamping force, adapting to different wire diameters and winding layers, providing flexible clamping and strong versatility, further improving the consistency and forming quality of the stellarator coil winding.

[0056] In one specific implementation, such as Figure 5 and Figure 7 As shown, the other end of screw 510 ( Figure 7 A handle 530 is provided at the left end of the middle screw 510. This handle allows for quick and manual adjustment of the clamping force without the need for additional tools, making operation convenient and improving winding efficiency. Furthermore, an inclined surface 5221 is formed on the outer side of the end of the second clamping arm 522 furthest from the connecting arm 523; in a first direction, the inclined surface 5221 gradually tilts towards the side closer to the first clamping arm 521. The first direction is the direction from the end of the second clamping arm 522 closest to the connecting arm 523 towards the end furthest from the connecting arm 523. Figure 7 The upper end of the second clamping arm 522 is directed downwards ( Figure 7 (Direction A in the middle). The end of the second clamping arm 522 is provided with an inclined surface 5221 to form a guide and closing structure, which facilitates the smooth entry of the conductor 10 into the clamping area and avoids jamming or scratching of the conductor 10.

[0057] In one embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the winding fixture also includes: a rotary platform 600, which can rotate about its axis; and a support base 110 which is detachably fixed on the rotary platform 600.

[0058] Specifically, the detachable fixed connection between the support base 110 and the rotary platform 600 includes, but is limited to, threaded connections and snap-fit ​​connections. The rotary platform 600 provides rotational power for the coil winding operation and, as the basic support structure of the overall tooling, provides fixed support for the winding mold 100 and subsequent auxiliary components. The support base 110 is detachably fixed to the rotary platform 600, enabling continuous circumferential rotational winding of the coil without repeated disassembly and repositioning, resulting in continuous, efficient winding with higher coaxiality.

[0059] like Figures 1-3As shown, there are multiple radial adjustment members 200, which are spaced apart circumferentially along the inner side plate 120; there are multiple sets of axial adjustment members 400 and auxiliary pressure plates 300 correspondingly arranged in the winding fixture, which are spaced apart circumferentially along the inner side plate 120; there are multiple clamping members 500, which are spaced apart circumferentially along the outer side plate 130.

[0060] Specifically, the radial adjustment component 200, the axial adjustment component 400, the auxiliary pressure plate 300, and the clamping component 500 are all arranged in multiple sets at intervals along the circumference, forming uniform positioning and clamping throughout the circumference, avoiding uneven local force and conductor 10 deviation. The multi-point coordinated constraint and three-dimensional precise positioning in the radial, axial, and circumferential directions significantly improve the winding accuracy, interlayer flatness, and overall consistency of the stellarator coil, making it suitable for the stable batch winding of large-size, high-precision coils.

[0061] Based on the structure of the above-mentioned stellarator coil winding fixture, another specific winding method includes:

[0062] Before the stellarator coil is wound, the rotary platform 600 is rotated around its axis to the initial preset position, so that the conductor 10 is tangentially introduced from the winding starting point of the winding mold 100. After the position is adjusted, the conductor 10 that has been pre-treated (including cleaning, sandblasting, insulation wrapping and other processes) is taken, and a set length is reserved for the pre-bending processing of the wire end. Then, the pre-bent wire end is fastened to the outer plate 130 of the winding mold 100 by the clamping member 500, thus completing the radial initial fixation of the coil winding.

[0063] Furthermore, after the initial radial fixing of the conductor 10 is completed, the auxiliary pressure plate 300 is fixed on the outer side plate 130 and the inner side plate 120 of the winding mold 100. By inserting the second bolt 410 into a second threaded through hole 310 on the auxiliary pressure plate 300 and tightening it, the auxiliary pressure plate 300 is made to smoothly press against the second pad 420 (the second pad 420 can be made of G10). With the help of the second pad 420, the conductor 10 is pushed to fit tightly against the top surface of the support seat 110 of the winding mold 100, so as to achieve precise axial positioning of the conductor 10 and avoid gaps between the conductor 10 and the top surface of the support seat 110 during winding, which would cause the winding arrangement to be loose.

[0064] Furthermore, the rotary platform 600 is adjusted to rotate to a preset angle and locked. Then, the first bolt 210 is inserted into a first threaded through hole 1211 of the corresponding connecting part 121 on the inner side plate 120 and tightened. The first pad 220 is stably pressed against the inner surface of the conductor 10, that is, the side surface of the conductor 10 closest to the inner side plate 120, so that the conductor 10 is tightly attached to the inner side of the outer side plate 130 of the winding mold 100, thereby limiting the radial displacement of the conductor 10 and realizing the all-round precise fixation of the conductor 10 on the winding mold 100, ensuring that the trajectory of the conductor 10 is completely matched with the configuration of the winding mold 100 during the subsequent winding process.

[0065] Furthermore, the rotary platform 600 is gradually rotated to another preset angle, and the axial and radial bonding and fixing of the conductor 10 are completed in sequence according to the aforementioned operation, thus completing the winding of the first turn of the coil.

[0066] Then, the second coil is wound starting from the lead end of the first coil. Before winding, the clamping part 500, auxiliary pressure plate 300, axial adjustment part 400 and radial adjustment part 200 on the contact surface corresponding to the winding angle are removed in advance. The above winding operation is repeated to finally complete the overall winding of the three-dimensional irregular stellarator coil.

[0067] It should be noted that, in addition to the specific embodiments described above, those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to that embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived from the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0068] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0069] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0070] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0071] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0072] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A winding fixture for a stellarator coil, characterized in that, The stellarator coil is formed by winding a conductor, and the winding fixture includes: A winding mold includes a ring-shaped support base, an inner side plate, and an outer side plate. The inner side plate and the outer side plate are spaced apart along the radial direction of the support base and are both fixed to the top of the support base. The outer side of the inner side plate is adapted to fit the inner side of the stellarator coil, and the inner side plate is provided with a plurality of connecting parts spaced apart along its circumference. Each connecting part includes a plurality of first threaded through holes spaced apart along the axial direction of the inner side plate. A radial adjustment member is provided, which is used to pass through a first threaded through hole of the corresponding connection part and is threadedly connected to the first threaded through hole. The end face of the radial adjustment member near the outer plate abuts against the inner side of the outer plate or the inner side of the conductor that has been wound.

2. The stellarator coil winding fixture as described in claim 1, characterized in that, The radial adjustment element includes: The first bolt is used to pass through a first threaded through hole in the corresponding connection part and to be threadedly connected to the first threaded through hole. A first pad is detachably fixed to one end of the first bolt near the outer side plate, and the end face of the first pad away from the first bolt constitutes the end face of the radial adjustment member near the outer side plate.

3. The stellarator coil winding fixture as described in claim 1, characterized in that, The winding fixture also includes: An auxiliary pressure plate is provided, wherein both ends of the auxiliary pressure plate along its length direction are detachably and fixedly connected to the top of the inner side plate and the top of the outer side plate, respectively, and the auxiliary pressure plate is provided with a plurality of second threaded through holes at intervals along its length direction. An axial adjusting member is provided, which is inserted into a second threaded through hole and threadedly connected to the second threaded through hole, and the end face of the axial adjusting member near the support base abuts against the top surface of the support base or the top surface of the wound conductor.

4. The stellarator coil winding fixture as described in claim 3, characterized in that, The axial adjustment component includes: The second bolt is used to pass through a second threaded through hole in the auxiliary pressure plate and is threadedly connected to the second threaded through hole. The second pad is detachably fixed to one end of the second bolt near the support seat, and the end face of the second pad away from the second bolt constitutes the end face of the axial adjustment member near the support seat.

5. The stellarator coil winding fixture as described in claim 3, characterized in that, The auxiliary pressure plate has oblong holes at both ends along its length. The auxiliary pressure plate is threaded to the inner side plate and the outer side plate through the two oblong holes, so that the auxiliary pressure plate can be fixedly connected to the inner side plate and the outer side plate with different radial spacing.

6. The stellarator coil winding fixture as described in claim 5, characterized in that, The plurality of second threaded through holes of the auxiliary pressure plate are located between the two waist-shaped holes; the plurality of second threaded through holes are evenly spaced along the length direction of the auxiliary pressure plate.

7. The stellarator coil winding fixture as described in claim 1, characterized in that, The inner side plate is composed of multiple inner side plate segments sequentially spliced ​​along its circumference, each inner side plate segment being threadedly connected to the support seat and having at least one connecting portion; and / or, The outer side plate is composed of multiple outer side plate segments spliced ​​together in sequence along its circumference, and each of the outer side plate segments is threadedly connected to the support seat.

8. The stellarator coil winding fixture as described in claim 1, characterized in that, The winding fixture also includes a clamping member located on the outer periphery of the outer side plate, which is used to restrict the movement of the conductor in the radial direction of the outer side plate; The clamping component includes a screw and a U-shaped clamping body. The U-shaped clamping body includes a first clamping arm and a second clamping arm that are arranged opposite to each other and spaced apart, and a connecting arm that connects the first clamping arm and the second clamping arm. The first clamping arm is located on the outer periphery of the outer side plate and has a third threaded through hole. The second clamping arm is located between the outer side plate and the inner side plate. One end of the screw passes through the third threaded through hole and is threadedly connected to the third threaded through hole, and then abuts against the outer side of the outer side plate, so that the conductor abuts between the inner side of the second clamping arm and the inner side of the outer side plate or the inner side of the conductor that has been wound.

9. The stellarator coil winding fixture as described in claim 8, characterized in that, A handle is provided at the other end of the screw; The second clamping arm has an inclined surface formed on the outer side of the end away from the connecting arm; in a first direction, the inclined surface gradually tilts towards the side closer to the first clamping arm, and the first direction is the direction of the second clamping arm from the end closer to the connecting arm to the end away from the connecting arm.

10. The stellarator coil winding fixture as described in any one of claims 1-9, characterized in that, The winding fixture further includes: a rotary platform rotatable about its axis; a support base detachably fixed to the rotary platform; and / or, The radial adjustment members are multiple, and the multiple radial adjustment members are spaced apart circumferentially along the inner side plate; the axial adjustment members and auxiliary pressure plates correspondingly provided in the winding fixture are multiple sets, and the multiple sets of axial adjustment members and auxiliary pressure plates are spaced apart circumferentially along the inner side plate; the clamping members of the winding fixture are multiple, and the multiple clamping members are spaced apart circumferentially along the outer side plate.

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