CN118199350A - Sectional inner rotor annular halbach array magnetic steel assembly tool and assembly process - Google Patents
Sectional inner rotor annular halbach array magnetic steel assembly tool and assembly process Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 169
- 239000010959 steel Substances 0.000 title claims abstract description 169
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 46
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- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000004809 Teflon Substances 0.000 claims description 6
- 229920006362 Teflon® Polymers 0.000 claims description 6
- 239000011241 protective layer Substances 0.000 claims description 6
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- 239000000463 material Substances 0.000 claims description 5
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- 230000009286 beneficial effect Effects 0.000 description 4
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Abstract
The invention discloses a sectional inner rotor annular halbach array magnetic steel assembly tool and an assembly process. The invention also discloses a sectional inner rotor annular halbach array magnetic steel assembling process, firstly assembling the magnetic steel on a sectional block, then preassembling the sectional block on an iron ring, taking down the sectional blocks from the iron ring one by one, and coating glue on the inner arc surface of the magnetic steel; finally, sequentially assembling the segmented blocks on the inner rotor to enable the inner arcs of the magnets to be adhered to the rotor; and after the glue is solidified, finishing the assembly process. Assembling the annular halbach magnet by using a sectional tooling, so that a gap can be controlled; the nondestructive installation of the magnetic steel and the inner rotor is realized, the deviation between the assembled finished product and the ideal state is smaller, and the loss of the magnetic steel in the assembly process is reduced.
Description
Technical Field
The invention relates to the technical field of magnet assembly, in particular to a sectional inner rotor annular halbach array magnetic steel assembly tool and an assembly process.
Background
The motor, as a device for converting electromechanical energy or signal, has undergone a development history of 200 years, and its design means and method have been quite mature. Currently, magnetic field modulation type motors and built-in high power density automobile motors are the focus of research, wherein magnetic field modulation type motors are more new directions for predicting motor electromagnetic design.
Compared with the traditional permanent magnet motor, the permanent magnet motor with the halbach array structure has obvious advantages. The air gap magnetic field of the annular halbach array permanent magnet motor is more similar to sinusoidal distribution, and the annular halbach array permanent magnet motor can realize larger air gap magnetic density and reduce steel loss under the condition of the same permanent magnet material consumption, so that the magnetic field intensity of a working face is obviously improved, and the magnetic field intensity of the other face is obviously reduced. In addition, the array structure is widely applied to permanent magnet bearings, magnetic refrigeration equipment, magnetic resonance equipment and other equipment.
The existing assembly process in the market mainly focuses on the assembly of the outer rotor annular halbach magnetic steel, the process generally utilizes an annular integral tool, the magnetic steel is assembled on an annular iron ring according to the polarity difference according to the drawing requirements, glue is coated on the outer cambered surface of the magnetic steel, the outer rotor is sleeved outside the magnetic ring, after the glue is solidified, the annular iron ring is disassembled, the assembly process is completed, and the magnetic steel is adhered on the inner cambered surface of the outer rotor. Because the acting surface of the outer rotor halbach magnet steel is positioned on the inner cambered surface of the magnet ring, the magnet steel is required to be preassembled by means of an annular iron ring so as to ensure the accurate arrangement of the magnet steel.
However, for the assembly of the inner rotor annular halbach magnet steel, the thought of the outer rotor assembly process can be consulted, namely, an annular tool is manufactured for the pre-assembly of the magnet steel, and then the inner rotor is sleeved into the magnet ring and fixed. However, this method has the following problems:
1. The inner rotor is used as a complex assembly body, contains various accessories such as a shaft, a bearing and the like, and is not a simple circular ring structure. If the inner rotor is directly sleeved into the magnetic steel inner ring and fixed, the inner rotor cannot be safely and effectively taken out of the annular tool. If the inner rotor is taken out by knocking the inner rotor, the inner rotor is subjected to the action of external force, so that the damage or deformation is easily caused, and the assembled performance and quality of the inner rotor are further affected.
2. In the machining process of the rotor, the magnetic steel and the circular ring tool, after the rotor is plugged into the assembled circular ring tool due to machining tolerance and form and position tolerance, gaps exist between the magnetic steel and the rotor, gaps exist between the magnetic steel and the magnetic steel, the two gaps are uncontrollable, the gaps of each set of rotor are different, an adhesive layer is not uniform, the adhesive strength between the magnetic steel and the rotor cannot be ensured, and the qualification rate of product assembly is low;
3. In the process of inserting the rotor into the tool, the gap is smaller, so that the plating layer of the inner arc of the magnetic steel is easily scratched, and the reliability of the magnetic steel in the use process cannot be ensured; to the gap between magnet steel and rotor after bonding great, cause the eccentric condition of rotor in the high-speed rotation in-process easily for a series of problems such as motor rotation in-process total noise is too big, and the magnet steel is in the state of magnetizing and bonding, can not carry out reworking, causes the waste.
Disclosure of Invention
The invention aims to provide a sectional inner rotor annular halbach array magnetic steel assembly tool and an assembly process, wherein the sectional and modularized tool is utilized to assemble the annular halbach, so that the nondestructive installation of an inner rotor magnetic ring is realized; in addition, gaps between the magnetic steels can be greatly reduced, so that the gaps can be controlled, and the assembly qualification rate of products is improved; eliminating damage to the magnetic steel coating in the assembly process; the size of the adhesive layer between the magnetic steel and the rotor is fixed, the deviation between the assembled finished product and the ideal state is small, the loss of the magnetic steel in the assembling process is greatly reduced, the processing period is shortened, and the productivity is improved.
To achieve the above object, the solution of the present invention is: a sectional inner rotor annular halbach array magnetic steel assembly process comprises the following steps:
s1: preparing an assembly tool, wherein the assembly tool comprises an iron ring simulating an inner rotor and a plurality of segmented blocks assembled on the periphery of the iron ring, and the inner arcs of the segmented blocks are used for attaching a plurality of magnetic steels; each segment block is provided with a digital number;
S2: assembling the magnetic steel on the segmented blocks according to the drawing sequence and polarity requirements, so that the outer arcs of the magnetic steel are attached to the inner cambered surfaces of the segmented blocks;
S3: preassembling the segmented blocks with the magnetic steel on the iron ring according to the numbering sequence of the segmented blocks, observing whether the gaps among the magnetic steels are uniform, whether the polarities of the magnetic steels are correctly installed and whether the inner arcs and the outer arcs of the magnetic steels are aligned, and adjusting and correcting;
S4: taking down the segment blocks from the iron ring one by one, and coating glue on the inner arc surface of the magnetic steel on the segment blocks;
S5: assembling the segmented blocks onto the inner rotor according to the numbering sequence of the segmented blocks, so that the inner arc surface of the magnet coated with glue is adhered to the inner rotor, and after all the segmented blocks are assembled, arranging all the magnetic steels to form a complete annular halbach array magnetic steel structure;
S6: after the glue is solidified, the segmented blocks are pulled down, and the magnetic steel is adhered on the inner rotor, so that the assembly process is completed.
In step S2, before attaching the magnetic steel, a layer of teflon is attached to each of the segment block and the iron ring to prevent the magnetic steel from adhering to the segment block after the overflowed glue is solidified.
Furthermore, the assembly sequences of the oriented magnetic steels on all odd-numbered sectional blocks are the same, and the assembly sequences of the oriented magnetic steels on all even-numbered sectional blocks are the same, so that an operator can finally assemble the complete halbach magnetic array in a one-odd-one-even mode during assembly.
Further, the assembly process of the segmented blocks and the inner rotor is completed through automatic equipment, the automatic equipment simultaneously extrudes the segmented blocks of the odd-numbered segments and the segmented blocks of the even-numbered segments to the inner rotor at intervals, so that the assembly of the halbach annular magnetic steel is completed, and the automatic production is realized.
The invention also provides a sectional inner rotor annular halbach array magnetic steel assembly tool, which comprises an iron ring simulating an inner rotor and a plurality of sectional blocks assembled on the periphery of the iron ring, wherein the inner arcs of the sectional blocks are used for attaching a plurality of magnetic steels;
Each segmented block is provided with a digital number, and the segmented blocks can be preassembled with the iron ring according to a preset sequence to form a complete annular halbach array magnetic steel tool.
Further, the segment blocks are arranged on the iron ring in a combination of an odd number segment and an even number segment.
Further, the number of the sectional blocks is ten, nine magnetic steels can be attached to the inner arc of each sectional block, namely ninety magnetic steels can be uniformly attached to the ten sectional blocks, and a complete annular halbach array is formed.
Further, the outer arc of each segment extends radially outwardly to form a handle.
Furthermore, the sectional blocks and the iron rings are made of magnetic conductive materials.
Furthermore, the surfaces of the segmented blocks and the iron ring are coated with protective layers, and the protective layers are made of teflon materials.
After the scheme is adopted, the beneficial effects of the invention are as follows:
The assembly fixture comprises the preassembled iron ring simulating the inner rotor and a plurality of sectional speeds, and the annular halbach magnetic steel is assembled through the sectional type and modularized assembly fixture, so that the assembly process of the magnetic steel is more accurate and controllable.
1. Nondestructive installation:
The assembly tool is designed in a segmented manner, so that the operation of inserting the rotor into the tool is avoided, the damage to the magnetic steel coating layer in the rotor inserting process is avoided, in addition, the magnetic steel is installed in a segmented manner, the firmly-adhered segmented blocks are detached one by one, the damage to any part of the rotor is avoided, and the segmented blocks can be pulled down with small force, so that the damage to the inner rotor caused by taking down the inner rotor in a knocking manner is avoided, and the magnetic steel and the inner rotor are ensured to be intact in the assembly process.
2. Pre-assembly inspection and gap control, assembly accuracy and precision are improved, and the qualification rate of product assembly is improved:
The sectional fixture consists of sectional blocks and pre-assembled iron rings, and the pre-assembled iron rings can simulate the assembly environment of the inner rotor, so that the magnetic steel can be positioned and adjusted more accurately in the assembly process. Before the magnet steel assembles the inner rotor, need to carry out the preassembly on segmentation frock, after the magnet steel encloses into the round on the iron hoop according to drawing order (size 1:1 copies inner rotor size), the assembly gap that forms after the magnet steel encloses into the round is very easy observed to the operating personnel, can adjust the gap size in advance through the mode of adding the spacer, and the spacer thickness is 0.03mm,0.05mm,0.08mm,0.1mm etc. generally, and even gap can guarantee that the weight is even in each direction after the rotor assembly magnet steel.
The assembly fixture can observe whether the magnetic steel polarity is correctly installed through the magnetic display sheet. Because the assembly fixture is made of magnetic conductive materials, after the magnetic steel is assembled, the whole circle of magnetic circuit of the magnetic steel can be observed through the magnetic display sheet, the magnetic circuit of the magnetic steel is assembled correctly, the magnetic circuit is regular and periodically changed, the polarity of the magnetic steel can be found out whether the magnetic steel is wrongly or not in time through the inspection of the pre-assembled magnetic circuit, and the magnetic steel is corrected in time, so that the irreversible economic loss caused after the inner rotor is assembled by the magnetic steel is avoided.
In the pre-assembly process, whether the inner arc and the outer arc of the magnetic steel are assembled or not can be observed, for example, the chord width of the magnetic steel is similar to the thickness of the magnetic steel, the magnetic steel can be overturned sometimes during assembly, the side face of the magnetic steel is attached to the segmented block, and the magnetic steel is difficult to find visually due to the similar size; however, by checking the light, the misplaced position is easy to find out that the light is transmitted, and a gap exists between the magnetic steel and the iron ring; in this way, the turned magnetic steel can be corrected in time, and wrong installation is avoided.
3. Modularized assembly and automatic production, simplified assembly flow, realization of mass production and automation of magnetic steel installation:
The assembly sequence of the orientation magnetic steel on all odd-numbered segmentation blocks in the segmentation blocks is designed to be the same, and the assembly sequence of the orientation magnetic steel on all even-numbered segmentation blocks is also designed to be the same, so that in the actual production process, operators only need to assemble odd-numbered and even-numbered combinations and finally assemble a complete halbach magnetic array in a mode of one odd-one even; meanwhile, the design is beneficial to automatic realization, and a designer only needs to consider that a plurality of groups of odd-numbered tools and a plurality of groups of even-numbered tools are spaced, and then the complex halbach annular magnetic steel can be assembled by extruding the complex halbach annular magnetic steel onto a rotor at the same time, so that the production efficiency and the product quality are further improved.
4. Reasonable segmentation of equipment frock:
According to the quantity and the size of the magnetic steels in the magnetic array, the number of the segments of the segment blocks in the segment tool is reasonably designed, so that the width of each segment of segment block is moderate, the perpendicularity cannot be difficult to adjust during installation due to overlarge suction, and unnecessary workload cannot be increased due to overlarge segments. Proper suction is helpful for maintaining the stability of the magnetic steel in the assembly process, and is convenient for operators to adjust and position.
Drawings
FIG. 1 is a front view of the segmented block and iron ring structure of the present invention;
FIG. 2 is a schematic perspective view of the segmented block and iron ring of the present invention;
FIG. 3 is a schematic perspective view of a single segmented block of the present invention;
FIG. 4 is a diagram of the assembly process of the segmented inner rotor annular halbach array magnetic steel of the present invention;
FIG. 5 is a schematic illustration of the segmented block and magnetic steel preassembled on an iron ring of the present invention;
FIG. 6 is a schematic view of the magnetic steel of the present invention mounted on an inner rotor;
FIG. 7 is a simulation diagram of the induction lines of the magnetic steel of the present invention mounted on a segmented block;
fig. 8 is a simulation diagram of magnetic induction lines of the assembled whole annular halbach array magnetic steel.
Description of the reference numerals:
1. an iron ring; 2. a segmentation block; 21. an intrados surface; 22. a handle; 23. numbering; 3. magnetic steel; 4. an inner rotor.
Detailed Description
The invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides a sectional inner rotor annular halbach array magnetic steel assembly tool, which is shown in fig. 1 to 6, and comprises a preassembled iron ring 1 manufactured by imitating the outer diameter of a rotor and a plurality of sectional blocks 2 used for accurately positioning and supporting magnetic steel 3. The inner arc of each segment block 2 is provided with a plurality of magnetic steels 3 for attachment, and the segment blocks 2 can be preassembled with the iron ring 1 according to a preset sequence to form a complete annular halbach array magnetic steel tool so as to be accurately matched with the inner rotor 4 in the subsequent assembly process.
In the present invention, as shown in fig. 1 to 3, each segment block 2 has a number 23 thereon, and these numbers 23 ensure that the segment blocks 2 can be arranged in a predetermined order on the pre-assembled iron ring 1 accurately. The design of the number 23 not only improves the accuracy of assembly, but also greatly simplifies the assembly process and improves the working efficiency. Of course, instead of using a numerical number 23, other types of numbers 23 may be used, such as a, b, c … ….
Referring to fig. 5 with emphasis, the assembly order of the oriented magnetic steels 3 on all the odd-numbered segment blocks 2 is the same, and the assembly order of the oriented magnetic steels 3 on all the even-numbered segment blocks 2 is the same, so that when in assembly, an operator only needs to pre-assemble with the iron ring 1 according to the combination of one odd-numbered segment and one even-numbered segment, and finally the complete halbach magnetic array is formed.
In addition, the shape and the size of each segment block 2 are identical, which ensures that each segment block 2 can be closely butted with the preassembled iron ring 1 and other segment blocks 2 in the assembly process, so that a complete annular halbach array magnetic steel tool is formed.
The number of segment blocks 2 is at least 2, the key being that the segment blocks 2 can be combined into one complete annular tooling to fit the outer diameter of the inner rotor 4. In this embodiment, the number of the magnetic steels 3 in the magnetic array to be assembled is 90, the 90 magnetic steels 3 need to be distributed on the plurality of segment blocks 2 evenly, the calculation finds that 90 can be divided by 2,3,5,6,9 and 10, the number of the segment blocks 2 is preferably even, and after the odd number is eliminated, 6 segments and 10 segments are preferable. If the segments are divided into 6 segments, the width of the segment blocks 2 is too wide, and the number of the magnetic steels 3 on each segment block 2 is too large, so that the assembly suction force is too large, the operation is inconvenient, and 10 segments are selected as the optimal segments. In the actual operation process, the 10 sections can be divided into 5 odd and 5 even sections, and the suction force is just large and convenient for installation and operation. The annular tool composed of the 10-section segmented blocks 2 has moderate width of each section segmented block 2, so that the perpendicularity cannot be difficult to adjust during installation caused by overlarge suction, and unnecessary workload cannot be increased due to excessive segmentation. The moderate suction force helps to maintain the stability of the magnetic steel 3 during assembly, and is convenient for the operator to adjust and position.
If the number of the segments is too small, the number of the magnetic steel 3 on each segment of the segment block 2 is increased, so that the single segment is too large in width, and the suction force is too strong during installation, so that the perpendicularity of the magnetic steel 3 is not beneficial to be accurately controlled, and the overall assembly quality is further affected. In contrast, if the number of segments is excessive, although the flexibility of assembly can be improved, the workload in the assembly process can be significantly increased, and the production efficiency can be reduced. Too many segments also increase the complexity and cost of the tooling itself, which is not beneficial to practical application.
As shown in fig. 3, to facilitate handling of the segment blocks 2 during assembly and disassembly, each of said segment blocks 2 extends radially outwardly at an outer arc, forming a handle 22. This handle 22 design allows an operator to easily pick up and drop off the segment block 2 during assembly, improving ease of operation or facilitating connection with automated equipment for automated production.
In addition, the preassembled iron ring 1 and the segmented blocks 2 are made of magnetic conductive materials, besides the common Q235 steel, other materials with high magnetic conductive performance can be selected, and the materials are selected to be comprehensively considered according to specific application scenes, cost budget and performance requirements. Because the assembly fixture is made of magnetic conductive materials, after the magnetic steel 3 is assembled according to a preset scheme, the magnetic circuit of the whole circle of the magnetic steel 3 can be observed through a magnetic display piece (an auxiliary tool for detecting magnetic field distribution). The magnetic circuit of the correctly assembled magnetic steel 3 will show regular and periodic variation. Through this pre-assembled magnetic circuit inspection step, we can find out in time whether there is a mistake in the polarity of magnet steel 3 to correct in time, avoid just finding the problem after magnet steel 3 assembles inner rotor 4, cause irreversible economic loss and production delay.
The surface of the segmented block 2 and the surface of the iron ring 1 are both coated with a protective layer, the protective layer is made of teflon (PTFE) which has corrosion resistance, wear resistance and non-adhesion, so that the protective layer can not only effectively prevent the magnetic steel 3 from being scratched in the assembly process, but also prevent the glue from overflowing and adhering to the magnetic steel 3 and the segmented block 2 in the assembly process. The design details obviously improve the assembly accuracy and reliability, ensure the clear separation between the magnetic steel 3 and the segmented block 2, and provide convenience for subsequent processing and testing.
The invention also provides a sectional inner rotor annular halbach array magnetic steel assembly process, which comprises the following steps (taking a magnetic array of 90 magnetic steels 3 as an example, refer to fig. 4):
S1: preparing an assembly fixture, wherein the assembly fixture comprises an iron ring 1 simulating an inner rotor 4 and 10 segment blocks 2, and the inner arc of each segment block 2 is used for attaching 9 magnetic steels 3;
S2: firstly, attaching a layer of teflon on each of the segmented block 2 and the iron ring 1 to prevent overflow glue from being solidified, then adhering the magnetic steel 3 to the segmented block 2, and then assembling the magnetic steel 3 on the segmented block 2 according to the drawing sequence and polarity requirements, so that the outer arc of the magnetic steel 3 is attached to the inner arc surface 21 of the segmented block 2, and referring to a shown in fig. 4 a; after a group of magnetic steels are attached to the segmented blocks, a magnetic induction line simulation diagram is shown in fig. 7;
the assembly sequences of the orientation magnetic steels 3 on all odd-numbered segmentation blocks 2 are the same, and the assembly sequences of the orientation magnetic steels 3 on all even-numbered segmentation blocks 2 are the same;
S3: according to the number 23 of the segmented blocks 2, an operator assembles the segmented blocks 2 with the magnetic steels 3 in a mode of an odd number segment and an even number segment, preassembles the segmented blocks 2 with the magnetic steels 3 on the iron ring 1, then observes whether the gap between the magnetic steels 3 is uniform, whether the polarities of the magnetic steels 3 are correctly installed and whether the inner arcs and the outer arcs of the magnetic steels 3 are aligned, adjusts and corrects the gap, ensures that the magnetic steels 3 can be arranged according to a preset annular halbach array, and achieves the optimal magnetic performance, as shown in a b in fig. 4;
s4: the sectional blocks 2 are taken down from the iron ring 1 one by one, and glue is smeared on the inner arc surface of the magnetic steel 3 on the sectional blocks 2;
S5: also according to the number 23 of the segment blocks 2, the magnet is assembled on the inner rotor 4 in a mode of odd number segments and even number segments, so that the inner arc surface of the magnet coated with glue is adhered on the inner rotor 4, and after all 10 segment blocks 2 are assembled, namely all the magnet steels 3 are arranged to form a complete annular halbach array magnet steel 3 structure, as shown in fig. 4 c;
S6: after the glue is solidified, the magnetic steel 3 is adhered to the inner rotor 4, and at the moment, the segmented blocks 2 can be pulled out, and the whole assembly process is finished. The assembled effect of the integral ring-shaped halbach array magnetic steel can be verified through a magnetic induction line simulation chart 8, the magnetic field distribution is shown to be uniform, the magnetic steel 3 is successfully and accurately assembled on the inner rotor, and a good magnetic field environment is provided for the subsequent operation of the motor.
It should be noted that, the assembly process of the segment blocks 2 and the inner rotor 4 can be performed manually or by an automation device, and the automation device extrudes the odd segment and the even segment blocks 2 to the inner rotor 4 at intervals at the same time, so that the assembly of the halbach annular magnetic steel 3 is completed, and the automation production is realized. For further illustration of the various embodiments, the invention is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present invention. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.
Meanwhile, the directions of front, rear, left, right, etc. in this embodiment are merely references to one direction, and do not represent directions in actual use. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above embodiments are only preferred embodiments of the present invention, and are not limited to the present invention, and all equivalent changes made according to the design key of the present invention fall within the protection scope of the present invention.
Claims (10)
1. A sectional inner rotor annular halbach array magnetic steel assembling process is characterized in that: the method comprises the following steps:
s1: preparing an assembly tool, wherein the assembly tool comprises an iron ring simulating an inner rotor and a plurality of segmented blocks assembled on the periphery of the iron ring, and the inner arcs of the segmented blocks are used for attaching a plurality of magnetic steels; each segment block is provided with a digital number;
S2: assembling the magnetic steel on the segmented blocks according to the drawing sequence and polarity requirements, so that the outer arcs of the magnetic steel are attached to the inner cambered surfaces of the segmented blocks;
S3: preassembling the segmented blocks with the magnetic steel on the iron ring according to the numbering sequence of the segmented blocks, observing whether the gaps among the magnetic steels are uniform, whether the polarities of the magnetic steels are correctly installed and whether the inner arcs and the outer arcs of the magnetic steels are aligned, and adjusting and correcting;
S4: taking down the segment blocks from the iron ring one by one, and coating glue on the inner arc surface of the magnetic steel on the segment blocks;
S5: assembling the segmented blocks onto the inner rotor according to the numbering sequence of the segmented blocks, so that the inner arc surface of the magnet coated with glue is adhered to the inner rotor, and after all the segmented blocks are assembled, arranging all the magnetic steels to form a complete annular halbach array magnetic steel structure;
S6: after the glue is solidified, the segmented blocks are pulled down, and the magnetic steel is adhered on the inner rotor, so that the assembly process is completed.
2. The assembly process of the segmented inner rotor annular halbach array magnetic steel as claimed in claim 1, wherein: in step S2, before attaching the magnetic steel, attaching a layer of teflon on the segmented block and the iron ring to prevent the magnetic steel from being adhered to the segmented block after the overflowed glue is solidified.
3. The assembly process of the segmented inner rotor annular halbach array magnetic steel as claimed in claim 1, wherein: the assembly sequences of the oriented magnetic steels on all odd-numbered sectional blocks are the same, and the assembly sequences of the oriented magnetic steels on all even-numbered sectional blocks are the same, so that an operator can finally assemble the complete halbach magnetic array in an odd-even mode during assembly.
4. A segmented inner rotor annular halbach array magnetic steel assembly process as claimed in claim 3, wherein: the assembly process of the segmented blocks and the inner rotor is completed through automatic equipment, the automatic equipment simultaneously extrudes the segmented blocks of the odd-numbered segments and the segmented blocks of the even-numbered segments to the inner rotor at intervals, so that the assembly of the halbach annular magnetic steel is completed, and the automatic production is realized.
5. A sectional type inner rotor annular halbach array magnet steel equipment frock, its characterized in that: the inner arc of the segmented blocks is used for attaching a plurality of magnetic steels;
Each segmented block is provided with a digital number, and the segmented blocks can be preassembled with the iron ring according to a preset sequence to form a complete annular halbach array magnetic steel tool.
6. The assembly fixture for the segmented inner rotor annular halbach array magnetic steel of claim 5, wherein: the segmented blocks are arranged on the iron ring in a combination of an odd number segment and an even number segment.
7. The assembly fixture for the segmented inner rotor annular halbach array magnetic steel of claim 5, wherein: the number of the sectional blocks is ten, nine magnetic steels can be attached to the inner arc of each sectional block, namely ninety magnetic steels can be uniformly attached to the ten sectional blocks, and a complete annular halbach array is formed.
8. The assembly fixture for the segmented inner rotor annular halbach array magnetic steel of claim 5, wherein: the outer arc of each segment extends radially outwardly to form a handle.
9. The assembly fixture for the segmented inner rotor annular halbach array magnetic steel of claim 5, wherein: the sectional blocks and the iron rings are made of magnetic conductive materials.
10. The assembly fixture for the segmented inner rotor annular halbach array magnetic steel of claim 5, wherein: the surfaces of the segmented blocks and the iron rings are coated with protective layers which are made of teflon materials.
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