CN208787533U - A kind of casted die mould of the sintered NdFeB fan ring block blank of radial magnetic field orientation - Google Patents
A kind of casted die mould of the sintered NdFeB fan ring block blank of radial magnetic field orientation Download PDFInfo
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- CN208787533U CN208787533U CN201821182891.7U CN201821182891U CN208787533U CN 208787533 U CN208787533 U CN 208787533U CN 201821182891 U CN201821182891 U CN 201821182891U CN 208787533 U CN208787533 U CN 208787533U
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Abstract
The utility model relates to sintered NdFeBs to fan ring block casted die mould relevant device field, the casted die mould of the sintered NdFeB fan ring block blank of specifically a kind of radial magnetic field orientation, it is intended to solve the technical issues of existing mold cannot process the neodymium iron boron fan ring block of radial magnetic field orientation.The left side a plane of the right side a of left cavity plate and right cavity plate is symmetrical and extends and is crossed to form an intersection；The rear end face of preceding cavity plate is parabolic cylinder, the focus of the directrix of parabolic cylinder is located on intersection, the left side and right side of preceding cavity plate are bonded the right side a of left cavity plate and the left side a of right cavity plate respectively, the front end face b of preceding cavity plate is the plane vertical with the plane of symmetry of left cavity plate and right cavity plate, and gap, the left and right edges that the front end face b of preceding cavity plate is exposed between left cavity plate and right cavity plate are located on left cavity plate and right cavity plate.The utility model fan ring block magnet produced is especially suitable for assembled toroidal magnet and Halbach array structure, has high use value.
Description
Technical field
The utility model relates to sintered NdFeBs to fan ring block casted die mould relevant device field, specifically a kind of radial magnetic field
The casted die mould of the sintered NdFeB fan ring block blank of orientation.
Background technique
Neodymium iron boron blank is by casted die mould by neodymium iron boron powder by press compression moulding, and wherein neodymium iron boron fans ring
Block blank can be made into the neodymium iron boron blank for fanning ring block, existing neodymium iron boron by processing such as simple mechanical grindings after referring to molding
Fanning ring block blank internal magnetic field lines is mostly parallelly distribute on, mainly due to caused by the structural limitation of existing casted die mould.
But in some fields, such as permanent magnet motor stator magnet steel, needing the magnetic field in neodymium iron boron fan ring block is radial oriented, so-called radial direction
Orientation refers to that the radial direction of magnetic line of force edge fan ring block is radial and is uniformly distributed.Therefore, a kind of burning of radial magnetic field orientation is researched and developed
The casted die mould for tying neodymium iron boron fan ring block blank, is important goal in the industry.
Utility model content
The utility model aims to solve the problem that existing mold cannot process the technology of the neodymium iron boron fan ring block of radial magnetic field orientation
Problem.For this purpose, the utility model proposes a kind of casted die moulds of the sintered NdFeB fan ring block blank of radial magnetic field orientation.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of casted die mould of the sintered NdFeB fan ring block blank of radial magnetic field orientation, including preceding cavity plate, rear cavity plate, a left side
Cavity plate, right cavity plate, upper male mould and lower punch, the preceding cavity plate, rear cavity plate, left cavity plate and right die thickness are all equal and fixed connect
Connect to form cavity plate assembly, the right side a of the left cavity plate, the left side a of right cavity plate, preceding cavity plate rear end face and rear cavity plate before
The die cavity of accommodating neodymium iron boron powder is collectively formed in end face a, and neodymium iron boron powder is placed in the die cavity, and press controls upper male mould under
Punch-pin moves toward one another, and the powder of die cavity is pressed into neodymium iron boron blank；The right side a of the left cavity plate and the left side of right cavity plate
Face a plane is symmetrical and extension is crossed to form an intersection, and the right side a of left cavity plate and the left side a of right cavity plate are located at described
Intersection is to extend two faces in the practical structures that mutually meet representation on two sagittal planes of the cylindrical body of axis and do not intersect；Before described
The rear end face of cavity plate is the symmetrical parabolic cylinder of symmetrical facial plane about the left cavity plate and right cavity plate, is limited in practical structures
The parabola of parabolic cylinder in die cavity is the interlude for including vertex, ensures the uniformity of the magnetic line of force, the parabolic cylinder
The focus of the directrix in face is located on the intersection, could ensure parallel flux lines radially in this way, the left side of the preceding cavity plate
Face b and right side b is bonded the right side a of the left cavity plate and the left side a of right cavity plate respectively, is formed with guarantee circumferentially closed
Die cavity；The front end face b of the preceding cavity plate is the plane vertical with the plane of symmetry of the left cavity plate and right cavity plate, the front end of preceding cavity plate
The gap that face b is exposed between left cavity plate and right cavity plate is so that the magnetic line of force can pass through from the front end face b of the preceding cavity plate, is preceding recessed
The left and right edges of the front end face b of mould are located on the right side a of the left cavity plate and left side a of right cavity plate so that the magnetic line of force is complete
Portion is passed through from the front end face b of the preceding cavity plate；The preceding cavity plate and rear cavity plate are all magnetic conduction mould, and the left cavity plate and right cavity plate are all
For non-magnetic mould.In use, the front end face b by parallel magnetic field perpendicular to preceding cavity plate is arranged, before parallel magnetic field passes through preceding cavity plate
End face b rear direction is constant, before then reaching at the rear end face of the parabolic cylinder planar of cavity plate, since parabolic cylinder is to the hair of the magnetic line of force
Effect is dissipated, the magnetic line of force can radiate diverging after passing through parabolic cylinder, and the spoke with vector angle is then formed in neodymium iron boron powder
The radial magnetic field orientation of shape is penetrated, then, press control upper male mould and lower punch move toward one another, and neodymium iron boron powder compaction is completed
The compacting of neodymium iron boron blank.Two sides and a left side for the neodymium iron boron fan ring block blank that the casted die mould of the utility model processes are recessed
The left side a fitting of the right side a, right cavity plate of mould, intrados are process by parabolic cylinder, and the maximum fan ring of going out can be processed
Block be processing after fan ring block intrados pass through parabolic cylinder left and right edges when state, at this moment, only need to be by intrados
Machining allowance grinding between parabolic cylinder is clean；Above-mentioned so-called intersection is exactly that neodymium iron boron fans ring block finished product in fact
Central axes；The circle that angle is neodymium iron boron fan ring block finished product is formed by between the right side a of left cavity plate and the left side a of right cavity plate
Heart angle.
The beneficial effects of the utility model are: the utility model discloses a kind of sintered NdFeB fans of radial magnetic field orientation
The casted die mould of ring block blank, the exterior arc surface that gained neodymium iron boron fans ring block magnet structure is one pole of magnet, and inner arc surface is magnetic
Another pole of body, it can be ensured that neodymium iron boron fans the vector field distribution that the magnetic line of force in ring block is in uniform angle, makes to fan inside ring block in this way
Deformation and stress of the degree of orientation close to ideal model, even density while when reducing sintering are formed, and post-processing recovery rate is improved；
In addition, the intrados following process of fan ring block only has the very little part between parabolic cylinder and inner arc surface, subsequent machine is reduced
The workload of tool processing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the preceding cavity plate of the utility model；
Fig. 2 is the structural schematic diagram of the rear cavity plate of the utility model；
Fig. 3 is the left cavity plate of the utility model and the structural schematic diagram of right cavity plate；
Fig. 4 is the structural schematic diagram of the cavity plate assembly of the utility model；
Fig. 5 is the structural schematic diagram of the entire casted die mould of the utility model.
Specific embodiment
Referring to figs. 1 to Fig. 5, a kind of casted die mould of the sintered NdFeB fan ring block blank of radial magnetic field orientation, including it is preceding
Cavity plate 1, rear cavity plate 2, left cavity plate 3, right cavity plate 4, upper male mould 5 and lower punch 6, the preceding cavity plate 1, rear cavity plate 2,3 and of left cavity plate
Right 4 thickness of cavity plate is all equal and is fixedly connected to form cavity plate assembly, the left side of the right side a31 of the left cavity plate 3, right cavity plate 4
The die cavity 7 of accommodating neodymium iron boron powder, neodymium iron is collectively formed in the front end face a21 of face a41, the rear end face 11 of preceding cavity plate 1 and rear cavity plate 2
Boron powder is placed in the die cavity 7, and press control upper male mould 5 and lower punch 6 move toward one another, and the powder of die cavity 7 is pressed into
Neodymium iron boron blank；The left side a41 plane of the right side a31 of the left cavity plate 3 and right cavity plate 4 is symmetrical and extends and is crossed to form one
Intersection, the right side a31 of left cavity plate 3 and the left side a41 of right cavity plate 4 are located at using the intersection as the two of the cylindrical body of axis
On a sagittal plane, extends two faces in the practical structures that mutually meet representation and do not intersect；The rear end face 11 of the preceding cavity plate 1 is about institute
The symmetrical parabolic cylinder of symmetrical facial plane of left cavity plate 3 and right cavity plate 4 is stated, the parabolic cylinder being located in die cavity in practical structures is limited
The parabola in face is the interlude for including vertex, ensures that the uniformity of the magnetic line of force, the focus of the directrix of the parabolic cylinder are located at
On the intersection, parallel flux lines could be ensured radially in this way, left side b12 and right side b13 points of the preceding cavity plate 1
It is not bonded the right side a31 of the left cavity plate 3 and the left side a41 of right cavity plate 4, forms circumferentially closed die cavity 7 to ensure；Institute
The front end face b14 of cavity plate 1 is the plane vertical with the plane of symmetry of the left cavity plate 3 and right cavity plate 4, the front end of preceding cavity plate 1 before stating
The gap that face b14 is exposed between left cavity plate 3 and right cavity plate 4 is so that the magnetic line of force can be worn from the front end face b14 of the preceding cavity plate 1
It crosses, the left and right edges of the front end face b14 of preceding cavity plate 1 are located at the right side a31 of left cavity plate 3 and the left side of right cavity plate 4
A41 is upper so that the magnetic line of force is all passed through from the front end face b14 of the preceding cavity plate 1；The preceding cavity plate 1 and rear cavity plate 2 are all magnetic conduction
Mould, the left cavity plate 3 and right cavity plate 4 are all non-magnetic mould.In use, by parallel magnetic field perpendicular to the front end face b14 of preceding cavity plate 1
Arrangement, the front end face b14 rear direction that parallel magnetic field passes through preceding cavity plate 1 is constant, before then reaching after the parabolic cylinder planar of cavity plate 1
At end face 11, since parabolic cylinder is to the disperse function of the magnetic line of force, the magnetic line of force can radiate diverging after passing through parabolic cylinder, then exist
Being formed in neodymium iron boron powder, there is radial radial magnetic field of vector angle to be orientated, and then, it is convex under that press controls upper male mould 5
Mould 6 moves toward one another, and by neodymium iron boron powder compaction, completes the compacting of neodymium iron boron blank.Here the die mould direction of Magnetic field press is Fig. 5
In the direction I, magnetic direction be the direction II, die mould direction is vertical with magnetic direction, reduces and breaks to the pressing under magnetic field degree of orientation
It is bad, be conducive to the magnetic property for improving neodymium iron boron fan ring block.Specific operating procedure is as follows:
First, cavity plate assembly is installed in Magnetic field press, and Magnetic field press cartridge clamping mold, it is total that upper male mould 5 leaves cavity plate
At rising to highest order, lower punch 6 enters position to be pressed in cavity plate assembly.Here, the head of Magnetic field press uses and preceding cavity plate 1
Front end face b14 and rear cavity plate 2 rear end face adaptation structure, i.e. mating surface is set as plane, so just can be by cavity plate assembly
Fixation；
Second, neodymium-iron-boron powder to be pressed is evenly distributed in the die cavity 7 of cavity plate assembly, upper male mould 5 comes downwards into recessed
In the die cavity 7 of mould assembly；
Third, Magnetic field press generates excitation field, while upper male mould 5 pushes, and presses on lower punch 6, completes to mold to pressure, protects
Pressure.
4th, pressure, pressure maintaining are completed in molding, and Magnetic field press closes excitation field, generate demagnetized field；
5th, Magnetic field press closes demagnetized field, and upper male mould 5 goes upward to highest order；
6th, lower punch 6 goes upward to demoulding position, and the product that abjection compacting downwards is completed is accomplished manually feeding；
7th, lower punch 6 goes upward to position to be pressed, waits compacting next time.
So circulation.
As a kind of preferred structure of rear cavity plate 2, the front end face a21 of the rear cavity plate 2 is about the left cavity plate 3 and the right side
The symmetrical hyperbolic cylinder of symmetrical facial plane of cavity plate 4, the left and right sides of rear cavity plate 2 right side with the left cavity plate 3 respectively
The left side a41 of a31 and right cavity plate 4 fitting.In this way, the fraction between hyperbolic cylinder and neodymium iron boron fan ring block forms and is located at two
The machining allowance of side further reduces the workload of machining.
As a kind of preferred structure of left cavity plate 3 and right cavity plate 4, the left cavity plate 3 and right cavity plate 4 are all that bottom surface is right angle
The straight triangular prism of triangle, the inclined edge surfaces of the straight triangular prism form the right side a31 of left cavity plate 3 or the left side of right cavity plate 4
A right-angle side face of a41, straight triangular prism are coplanar with the front end face b14 of preceding cavity plate 1, easy to process.As rear cavity plate 2 into one
Step limits, it is described after cavity plate 2 rear end face be the plane parallel with the front end face b14 of preceding cavity plate 1 and left and right edges respectively with
One rib of left cavity plate 3 and right cavity plate 4 is overlapped, in this way, cavity plate is always shaped to rectangular outer profile, is convenient for clamping.
To deviate from from die cavity 7 convenient for neodymium iron boron blank after molding, the inner wall of the die cavity 7 of the cavity plate assembly is provided with
0.2-0.8 ° of draw taper of lower expansion, after the completion of compacting, neodymium iron boron blank can de- material from below.Specifically, draw taper is excellent
Choosing uses 0.2 ° or 0.5 ° or 0.8 °.
Preferably, real by Tenon or welding or bolt between the preceding cavity plate 1, rear cavity plate 2, left cavity plate 3 and right cavity plate 4
Now fix.
Further, the shape size of the upper male mould 5 and lower punch 6 is adapted to the die cavity 7 of the cavity plate assembly.It is so-called
Adaptation, is exactly to want between the inner wall of the die cavity 7 of the outer wall and cavity plate assembly of upper male mould 5 and lower punch 6 well known to those skilled in the art
Gap is formed, just can be carried out compacting in this way.
Further, the maximum distance of the front end face b14 of the preceding cavity plate 1 to rear end face 11 is greater than neodymium iron boron fan ring block
The half of the radius of inner arc surface can further ensure the radiation characteristic in magnetic field.
The above specific structure and dimension data are illustrated to the preferred embodiment of the utility model, but this reality
It is not limited to the specific embodiments with novel creation, those skilled in the art are in the premise without prejudice to the spirit of the present invention
Various equivalent deformation or replacement can be also made down, these equivalent deformations or replacement are all contained in the claim of this application and are limited
In fixed range.
Claims (7)
1. a kind of casted die mould of the sintered NdFeB fan ring block blank of radial magnetic field orientation, including preceding cavity plate (1), rear cavity plate
(2), left cavity plate (3), right cavity plate (4), upper male mould (5) and lower punch (6), the preceding cavity plate (1), rear cavity plate (2), left cavity plate
(3) and right cavity plate (4) thickness is all equal and be fixedly connected to form cavity plate assembly, the right side a(31 of the left cavity plate (3)), it is right
The left side a(41 of cavity plate (4)), the front end face a(21 of the rear end face (11) of preceding cavity plate (1) and rear cavity plate (2)) appearance is collectively formed
Set the die cavity (7) of neodymium iron boron powder, it is characterised in that: the right side a(31 of the left cavity plate (3)) and right cavity plate (4) left side
Face a(41) plane it is symmetrical and extend be crossed to form an intersection, the right side a(31 of left cavity plate (3)) and right cavity plate (4) left side
Face a(41) it is located at using the intersection as on two sagittal planes of the cylindrical body of axis；The rear end face (11) of the preceding cavity plate (1) is
About the symmetrical parabolic cylinder of symmetrical facial plane of the left cavity plate (3) and right cavity plate (4), the coke of the directrix of the parabolic cylinder
Point is located on the intersection, the left side b(12 of the preceding cavity plate (1)) and right side b(13) it is bonded the left cavity plate (3) respectively
Right side a(31) and right cavity plate (4) left side a(41), the front end face b(14 of the preceding cavity plate (1)) be with the left side it is recessed
The vertical plane of the plane of symmetry of mould (3) and right cavity plate (4), the front end face b(14 of preceding cavity plate (1)) expose to left cavity plate (3) and the right side
Gap between cavity plate (4) is so that the magnetic line of force can be from the front end face b(14 of the preceding cavity plate (1)) it passes through, before preceding cavity plate (1)
End face b(14) left and right edges be located at the right side a(31 of left cavity plate (3)) and right cavity plate (4) left side a(41) on
So that the magnetic line of force is all passed through from the front end face b(14 of the preceding cavity plate (1))；The preceding cavity plate (1) and rear cavity plate (2) are all to lead
Magnetic mould, the left cavity plate (3) and right cavity plate (4) are all non-magnetic mould.
2. a kind of casted die mould of the sintered NdFeB fan ring block blank of radial magnetic field orientation according to claim 1,
It is characterized in that: the front end face a(21 of cavity plate (2) after described) it is symmetrical facial plane about the left cavity plate (3) and right cavity plate (4)
Symmetrical hyperbolic cylinder, the left and right sides of rear cavity plate (2) the right side a(31 with the left cavity plate (3) respectively) and right cavity plate
(4) left side a(41) fitting.
3. a kind of casted die mould of the sintered NdFeB fan ring block blank of radial magnetic field orientation according to claim 1 or 2,
It is characterized by: the left cavity plate (3) and right cavity plate (4) are all the straight triangular prism that bottom surface is right angled triangle, the straight trigone
The inclined edge surfaces of column form the right side a(31 of left cavity plate (3)) or right cavity plate (4) left side a(41), one of straight triangular prism is straight
The front end face b(14 in arm of angle face and preceding cavity plate (1)) it is coplanar.
4. a kind of casted die mould of the sintered NdFeB fan ring block blank of radial magnetic field orientation according to claim 3,
Be characterized in that: the rear end face of cavity plate (2) is the plane and the right and left parallel with the front end face b(14 of preceding cavity plate (1)) after described
Edge is overlapped with a rib of left cavity plate (3) and right cavity plate (4) respectively.
5. a kind of casted die mould of the sintered NdFeB fan ring block blank of radial magnetic field orientation according to claim 1,
Be characterized in that: the inner wall of the die cavity (7) of the cavity plate assembly is provided with 0.2-0.8 ° of draw taper of lower expansion.
6. a kind of casted die mould of the sintered NdFeB fan ring block blank of radial magnetic field orientation according to claim 1,
It is characterized in that: by Tenon or welding or bolt between the preceding cavity plate (1), rear cavity plate (2), left cavity plate (3) and right cavity plate (4)
It realizes and fixes.
7. a kind of casted die mould of the sintered NdFeB fan ring block blank of radial magnetic field orientation according to claim 1,
Be characterized in that: the shape size of the upper male mould (5) and lower punch (6) is adapted to the die cavity (7) of the cavity plate assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821182891.7U CN208787533U (en) | 2018-07-25 | 2018-07-25 | A kind of casted die mould of the sintered NdFeB fan ring block blank of radial magnetic field orientation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821182891.7U CN208787533U (en) | 2018-07-25 | 2018-07-25 | A kind of casted die mould of the sintered NdFeB fan ring block blank of radial magnetic field orientation |
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| CN208787533U true CN208787533U (en) | 2019-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821182891.7U Active CN208787533U (en) | 2018-07-25 | 2018-07-25 | A kind of casted die mould of the sintered NdFeB fan ring block blank of radial magnetic field orientation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165847A (en) * | 2019-06-11 | 2019-08-23 | 深圳市瑞达美磁业有限公司 | The production method of the solid magnet of radial anisotropic multipole of different in width waveform |
| CN113410039A (en) * | 2021-06-18 | 2021-09-17 | 中国电子科技集团公司第九研究所 | Preparation method of multi-pole magnetic ring based on HALBACH structure |
-
2018
- 2018-07-25 CN CN201821182891.7U patent/CN208787533U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165847A (en) * | 2019-06-11 | 2019-08-23 | 深圳市瑞达美磁业有限公司 | The production method of the solid magnet of radial anisotropic multipole of different in width waveform |
| CN113410039A (en) * | 2021-06-18 | 2021-09-17 | 中国电子科技集团公司第九研究所 | Preparation method of multi-pole magnetic ring based on HALBACH structure |
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