CN202771951U - Orientation pressing device of radial orientation magnet ring - Google Patents
Orientation pressing device of radial orientation magnet ring Download PDFInfo
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- CN202771951U CN202771951U CN201220477303.9U CN201220477303U CN202771951U CN 202771951 U CN202771951 U CN 202771951U CN 201220477303 U CN201220477303 U CN 201220477303U CN 202771951 U CN202771951 U CN 202771951U
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Abstract
The utility model discloses an orientation pressing device of a radial orientation magnet ring. The orientation pressing device is arranged on a support of a pressing machine. The pressing machine comprises an upper pressing head, a lower pressing head and a controller. The orientation pressing device comprises a female die and three magnet exciting coils. The cross section face of the female die is of a regular triangle shape. The female die comprises an upper female die and a lower female die. The upper female die is made of permeability magnetic material and the lower female die is made of non-magnetic metal material. The inner end faces of the three magnet exciting coils are respectively connected with three side faces of the female die. Cylindrical main yoke irons is arranged in the magnet exciting coils and connected with the side face of the female die. The outer end faces of the main yoke irons are parallel to the outer end faces of the magnet exciting coils in an aligning mode. The orientation pressing device of the radial orientation magnet ring has the advantages of being compact in structure, reducing magnet leakage, achieving the orientation pressing of a height-diameter ratio radial orientation magnet ring, efficiently shortening the main yoke irons so as to reduce magnetic leakage, and improving intensity of an orientation magnetic field.
Description
Technical field
The utility model relates to the anisotropic magnetic material preparation field, especially relates to a kind of orientation pressure setting of radial oriented magnet ring.
Background technology
Radial oriented magnet ring with anisotropic permanent-magnetic material production can be widely used in the magneto field.The technological difficulties that prepare radial oriented magnet ring mainly are the oriented moulding methods.There is the low problem of the preparation radial oriented magnet ring alignment magnetic field of larger ratio of height to diameter in an existing oriented moulding technology.The oriented moulding method that adopts at present mainly contains two kinds: a kind of is the bipolar head method that liquidates, and utilizes exactly the rear generation that liquidates of two relative exciting fields of homopolarity to be orientated to extraradial magnetic field; Another kind of method for alignment is four extremely poly-magnetic methods, adopts exactly the method for four cartridge homopolarities poly-magnetic to the center to be orientated.
There is a common shortcoming in two kinds of methods when being exactly the magnet ring of preparation larger ratio of height to diameter, and radially oriented magnetic field is lower.When the ratio of height to diameter of moulding blank greater than 1 the time, even if in the ideal situation (magnetic resistance, leakage field, magnetic loss etc. are all disregarded) and adopt the highest ferro-cobalt of saturated pole intensity (
H o Be about 2.4T) make magnetic core, according to magnetic field continuity principle, when the core iron magnetic field intensity reached capacity, alignment magnetic field was 1.25T only, was lower than NdFeB magnetic powder orientation 1.5T commonly used.Leakage field is unavoidable in actual production still more, and in addition, two utmost points liquidate, and the design of magnet short-cut path master yoke is long, four extremely poly-magnetic methods are also longer owing to limited space master yoke in order to reduce for method, can cause larger leakage field like this.Therefore, adopting prior art to prepare ratio of height to diameter in actual production is 0.5 o'clock, and alignment magnetic field is difficult to reach more than the 1.5T, can't realize the preparation of the radial oriented magnet ring of larger ratio of height to diameter high-performance.
Chinese patent mandate publication number: CN1293436A authorizes open day May 2 calendar year 2001, discloses the manufacture craft of the radially oriented sintering magnetic Nd-Fe-B ring of a kind of one-shot forming, and the powder that a. is good with scale is inserted in the cavity impression of lower mould; B. by the program control hydraulic press that starts of CP machine patrix is drawn close to counterdie, seaming chuck, upper plug, upper electromagnet DL synchronization suspend after walking to seaming chuck and negative template contacts at this moment; C. suspend rear power-on and power-off magnet, simultaneously magnet ring magnetized and begin radially oriented; D. when the magnetic field intensity that magnetizes reach 〉=during 1.5T, seaming chuck continues to press down and carries out two-way compacting, pressure reaches 〉=release during 15 MPa; E. go up, lower electromagnet oppositely demagnetizes the radially oriented action of powder (this moment finished); F. patrix lifting, counterdie withdraw from the magnet ring depanning; G. the magnet ring after the depanning carry out sintering product.What this invention was adopted is bipolar the method that liquidates.
Chinese patent mandate publication number: CN1374665A, authorize open day on October 16th, 2002, a kind of multiple polymerization and radiation orientation process of forming and preparing of magnet ring is disclosed, comprise magnet exciting coil, main yoke, former, the service area, poly-magnetic axis core, lower plug, upper plug, secondary yoke, distributing device, scraper plate, seaming chuck, the patrix pressure head, spring, the counterdie pressure head, adjuster, pin, push-down head, floating cylinder, down pressing oil cylinder, magnet exciting coil is by main yoke and the inside polymerization of former, pass same sex magnetic field behind the service area two routes plug up and down minute up and down after poly-magnetic axis in-core collision, and secondary yoke is led back, form complete " matrix pattern " closed-loop path, magnet exciting coil is comprised of permanent magnetic coil 1# and pulsed coil 2#, pulsed coil 2# is contained in the inside of the permanent magnetic coil 1# of direct current, the preparation method of concrete structure and oriented moulding is as follows: a, concrete structure: load the mold pressing head on the push-down head and also mutually be adhesively fixed, the upper end of counterdie pressure head is provided with the service area, plug is loaded in lower end in the hole of push-down head, dress poly-magnetic axis core in upper end also is adhesively fixed mutually, the top of poly-magnetic axis core is provided with convex cone, the seaming chuck middle end of upper section is provided with hole dress pin, the lower end of seaming chuck is loaded onto the mold pressing head and mutually is adhesively fixed and mutually corresponding with service area place, the bottom of upper plug is provided with concave cone, upper plug is contained in the seaming chuck and is fixed on the seaming chuck by pin, and the concave cone of upper plug is mutually corresponding with the convex cone of poly-core axis, the outer end dress adjuster of seaming chuck, the upper end shock mount of upper plug, the outer end of patrix pressure head and counterdie pressure head fills former and mutually surely closes with the service area, the upper end dress distributing device of former, be provided with scraper plate in the distributing device, the outer end of former fills main yoke, the outer end dress magnet exciting coil of main yoke, secondary yoke is equipped with in the outer end of seaming chuck and push-down head, the inboard middle-end of secondary yoke is provided with the hole, in the hole of the inboard of the slotting secondary yoke of the little head end of main yoke, the upper end of secondary yoke and the secondary yoke on the seaming chuck interfix, the secondary yoke of lower end and push-down head interfixes, b, the preparation method of oriented moulding is as follows: when the patrix pressure head begins to suppress, upper plug is because of spring contraction above the support compression of poly-magnetic axis core, guarantee normally pressing down of patrix pressure head, when magnetic powder base under the support of counterdie pressure head, the former demoulding of floating downward, when arrival former in magnetic powder base upper end is suitable for reading, the adjuster that adjusted is good just withstands on the pin, pin rises synchronously with seaming chuck, the blank that guarantees forming is not inserted in the plug, after in the service area, inserting the anisotropic magnetic material powder, magnet exciting coil excitation orientation, compressing by press, before former is floated downward the demoulding, seaming chuck lifts (0-0.5 millimeter) slightly, elastic energy with internal memory behind the release magnetic pressurized, in the whole process of the magnetic powder base demoulding, the patrix pressure head is being helped magnetic powder base all the time, guarantees the serviceability rate of the magnetic powder base demoulding of forming.The radially oriented moulding to anisotropic magnetic material is finished in the former demoulding of floating downward.This invention is to adopt the method for four cartridge homopolarities poly-magnetic to the center to be orientated.
Summary of the invention
The utility model be for the leakage field that overcomes method of the prior art larger, particularly produce the magnet ring of larger ratio of height to diameter, enough strong alignment magnetic field can't be provided, cause the lower deficiency of magnet ring product magnetic property, the poly-magnetic technology of three magnet exciting coils of a kind of employing is provided, compact conformation can effectively reduce leakage field; Adopt repeatedly the oriented moulding technology to reduce the ratio of height to diameter of each oriented moulding, improve alignment magnetic field, thereby realize larger ratio of height to diameter (magnet ring height
h/ magnet ring internal diameter
r〉=0.5) the orientation pressure setting of the radial oriented magnet ring of the preparation of radial oriented magnet ring (radial oriented magnet ring).
To achieve these goals, the utility model is by the following technical solutions:
A kind of orientation pressure setting of radial oriented magnet ring, described orientation pressure setting is located on the support of press, and described press comprises seaming chuck, push-down head and controller; Described orientation pressure setting comprises former and 3 magnet exciting coils; The cross section of described former is equilateral triangle, and described former comprises the upper former made by permeability magnetic material and by the lower former of making without the magnetic metal material; The inner face of 3 magnet exciting coils is connected with three sides of former respectively, is provided with the cylindrical main yoke that is connected with the side of former in the described magnet exciting coil, and the outer face of main yoke and the outer face of magnet exciting coil flush;
Described former middle part is provided with cylindrical hole, be provided with cylindrical lower core iron in the cylindrical hole, described lower core iron is fixed on the support of press, and the push-down head of described press is provided with the tubulose low punch that can stretch between former and the lower core iron and move up and down with respect to former and lower core iron; The seaming chuck of described press is provided with and can stretches into cavity that lower core iron and former form and consist of the tubulose upper punch of die cavity with former, lower core iron, low punch; Controller is connected with 3 magnet exciting coils with upper and lower pressure head respectively.
The utility model adopts three extremely poly-magnetic technologies to substitute existing two utmost points and liquidates and four extremely poly-magnetic technologies, namely adopts 3 magnetic conduction master yokes and 3 magnet exciting coils that magnet ring is orientated (as shown in Figure 1).Compare two utmost points and liquidate and four extremely poly-magnetic technologies, three extremely poly-magnetic can effectively shorten main yoke, reduce leakage field, improve alignment magnetic field.
Magnet ring for larger ratio of height to diameter, adopt repeatedly oriented moulding to make magnet ring along with the increase of the number of times of oriented moulding, the height of the magnet ring that is pressed into constantly increases, the last time during oriented moulding, again with a larger pressure compacting, thereby obtain the magnet ring with larger ratio of height to diameter (ratio of height to diameter 〉=0.5) of an integral body.
As preferably, be provided with the cylindrical upper core iron that is fixedly connected with upper punch in the upper punch, the upper end of described lower core iron is positioned at the top of former, and the lower end of described upper core iron is positioned at the top of upper punch lower end.
As preferably, the outer face of described main yoke and the outer face of magnet exciting coil are provided with circular secondary yoke.Secondary the arranging of yoke of magnetic conduction strengthened magnetic property, and the magnetic property of the magnet ring of making is stronger.
As preferably, three bights of described former are respectively equipped with the plane perpendicular to corresponding bisector of angle.
As preferably, the height ratio of described lower former and upper former is 4:1 to 5:1.
As preferably, the ratio between the height of upper former and the lower core iron external diameter is 1:1 to 1.2:1.
A kind of manufacture method of radial oriented magnet ring comprises the steps:
The internal diameter of the magnet ring of (1) suppressing is as required selected the upper former that need to use; Selected upper former is fixed on the lower former;
And the height of the magnet ring of orientation compacting as required, the number of times of default oriented moulding in controller need to be added in the pressure on the upper and lower pressure head during each oriented moulding and need time of pressurize;
(2) controller control push-down head drive low punch goes upward to the former bottom and keeps stable;
Lower former is that non-magnet_conductible material is made, and the stable position assurance die cavity of low punch is positioned at the former position, is convenient to the inferior orientation compacting of radial oriented magnet ring.
(3) with instrument magnetic is put into the cavity that upper former, low punch and lower core iron form; It is descending that seaming chuck drives upper punch, and upper and lower core iron is closed, and upper former, upper punch, low punch and lower core iron consist of die cavity;
(4) 3 magnet exciting coil pluggeds of controller control, controller is controlled at and adds default pressure on the upper and lower pressure head, and pressurize predetermined time, and the magnetic in the die cavity is oriented compacting and forms and once suppresses magnet ring;
3 magnet exciting coils form the inside magnetic field of three utmost point homopolarities, and the magnetic line of force passes die cavity by main yoke, upper former and forms radially oriented magnetic field, magnetic line of force polymerization and lead back main yoke formation magnetic loop by secondary yoke in core iron; After the orientation compacting, the magnetic in the die cavity forms for the first time radial oriented magnet ring;
(5) 3 magnet exciting coil deenergizations of controller control, upper and lower drift moves down simultaneously, makes once to suppress magnet ring and move in former bottom and the corresponding cavity of lower former;
(6) the up drive upper punch of seaming chuck separates with upper former, adds magnetic with instrument in the cavity of once suppressing magnet ring upper surface, lower core iron and the formation of upper former;
(7) repeat oriented moulding operation in (4), with magnetic with once suppress magnet ring and be pressed into secondary compacting magnet ring;
(8) repeat the operating process of (5) to (7), during oriented moulding, apply predetermined pressure by upper and lower pressure head the last time, and pressurize predetermined time;
(9) upper and lower pressure head is simultaneously up, and low punch ejects former with whole magnet ring, finishes the moulding of a radial oriented magnet ring.
The number of times that controller is controlled described oriented moulding is 2 to 6 times.During each oriented moulding before the last oriented moulding, controller is controlled at the pressure that adds 3 to 10 MPas on the upper and lower pressure head, and the dwell time is 1 to 5 second.Described pressure and dwell time increase gradually along with the increase of the number of times of oriented moulding.During last oriented moulding, controller is controlled at the pressure that adds 5 to 15 MPas on the magnet ring, and the dwell time is 3 to 10 seconds.
Therefore, the utlity model has following beneficial effect:
(1) orientation press device compact conformation has reduced leakage field, has realized larger ratio of height to diameter (magnet ring height
h/ magnet ring internal diameter
r〉=0.5) orientation of radial oriented magnet ring compacting; (2) the radial oriented magnet ring magnetic property that adopts repeatedly the oriented moulding technology to make is stable; (3) effectively shortening main yoke reduces leakage field, improves alignment magnetic field.
Description of drawings
Fig. 1 is a kind of structural representation of orientation pressure setting of the present utility model when idle;
A kind of structural representation when Fig. 2 is orientation pressure setting use of the present utility model;
Fig. 3 is a kind of structural representation that upper and lower former of the present utility model and upper and lower drift and upper and lower core iron match;
Fig. 4 is a kind of theory diagram of the present utility model.
Among the figure: seaming chuck 1, push-down head 2, controller 3, magnet exciting coil 4, upper former 5, lower former 6, main yoke 7, secondary yoke 8, lower core iron 9, low punch 10, upper punch 11, upper core iron 12, cylindrical hole 13.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Embodiment 1:
Be a kind of orientation pressure setting of radial oriented magnet ring such as Fig. 1, Fig. 2, embodiment shown in Figure 4, described orientation pressure setting is located on the support of press, and described press comprises seaming chuck 1, push-down head 2 and controller 3; Described orientation pressure setting comprises former and 3 magnet exciting coils 4; The cross section of former is equilateral triangle, and former comprises the upper former 5 made by permeability magnetic material and by the lower former 6 of making without the magnetic metal material; The inner face of 3 magnet exciting coils is connected with three sides of former respectively, be provided with the cylindrical main yoke 7 that is connected with the side of former in the magnet exciting coil, the outer face of main yoke and the outer face of magnet exciting coil flush, and the outer face of main yoke and the outer face of magnet exciting coil are provided with circular secondary yoke 8;
The former middle part is provided with cylindrical hole 13, be provided with cylindrical lower core iron 9 in the cylindrical hole, lower core iron is fixed on the support of press, and the push-down head of described press is provided with the tubulose low punch 10 that can stretch between former and the lower core iron and move up and down with respect to former and lower core iron.
As shown in Figure 3, the seaming chuck of press is provided with and can stretches into cavity that lower core iron and former form and consist of the tubulose upper punch 11 of die cavity with former, lower core iron, low punch; Be provided with the cylindrical upper core iron 12 that is fixedly connected with upper punch in the upper punch, the upper end of lower core iron is positioned at the top of former, and the lower end of upper core iron is positioned at the top of upper punch lower end; Controller is connected with 3 magnet exciting coils with upper and lower pressure head respectively.
Three bights of former are respectively equipped with the plane perpendicular to corresponding bisector of angle.The height ratio of lower former and upper former is 4:1.Ratio between the height of upper former and the lower core iron external diameter is 1:1.
Production highly is 20 millimeters, and internal diameter is 20 millimeters radial oriented magnet ring.Upper and lower core iron and upper former adopt the pure iron material, and the advantage of pure iron material is that price is low, and magnetic permeability is high.
Lower former adopts the nonmagnetic steel material; Also can adopt the hard metal alloys material, such as materials such as tungsten carbides.
Produce the radial oriented magnet ring of 20 millimeters of high 20 millimeters internal diameters, comprise the steps:
(1) selection highly is 20 millimeters upper former; Selected upper former is fixed on the lower former;
The number of times of default oriented moulding is 2 times in controller, and the pressure that adds at upper and lower pressure head during oriented moulding for the first time is 3 MPas, and the dwell time is 1 second; Briquetting pressure 10 MPas for the second time, pressurize 8 seconds;
(2) controller control push-down head drive low punch goes upward to the former bottom and keeps stable;
(3) with instrument magnetic is put into the cavity that upper former, low punch and lower core iron form; It is descending that seaming chuck drives upper punch, and upper and lower core iron is closed, and upper former, upper punch, low punch and lower core iron consist of die cavity;
(4) 3 magnet exciting coil pluggeds of controller control, in 5 seconds, the electric current in the controller control magnet exciting coil is by dying down by force and disappearing, and controller is controlled at the pressure that adds 3 MPas on the upper and lower pressure head, and the dwell time is 1 second; Magnetic in the die cavity is oriented compacting formation and once suppresses radial oriented magnet ring;
(5) upper and lower drift moves down simultaneously, makes once to suppress radial oriented magnet ring and move in former bottom and the corresponding cavity of lower former;
(6) the up drive upper punch of seaming chuck separates with upper former, adds magnetic with instrument in the cavity of once suppressing radial oriented magnet ring upper surface, lower core iron and the formation of upper former;
(7) 3 magnet exciting coil pluggeds of controller control, in 5 seconds, the electric current in the controller control magnet exciting coil is by dying down by force and disappearing, and controller is controlled at and adds 10 MPas on the upper and lower pressure head, pressurize 8 seconds, with magnetic with once suppress radial oriented magnet ring and be pressed into secondary and suppress radial oriented magnet ring;
(8) upper and lower pressure head is simultaneously up, and low punch ejects former with whole radial oriented magnet ring blank, finishes the moulding of a radial oriented magnet ring.
The purpose of pressurization is that the magnetic after the orientation is fixed for the first time, but leaves the space will for the further density that improves, in order to improve the repeatedly adhesion between magnet ring; The purpose of last pressurization is further to improve moulding magnet ring density.
Comparative example 1:
Adopt the liquidate technical scheme of an oriented moulding of two utmost points to prepare the radial oriented magnet ring blank of 20 millimeters of high 20 millimeters internal diameters.
Comparative example 2:
Adopt four technical schemes of extremely gathering oriented mouldings of magnetic to prepare the radial oriented magnet ring blank of 20 millimeters of high 20 millimeters internal diameters.
The tabulation of table 1 performance comparison
When to produce ratio of height to diameter be 1 molded blank, adopt device and method of the present utility model than adopting the prior art alignment magnetic field and improve approximately 50%, remanent magnetism and maximum magnetic energy product also have obvious lifting in the main magnetic property of magnet ring.
Embodiment 2:
Production highly is 60 millimeters, and internal diameter is 20 millimeters radial oriented magnet ring.When producing height greater than 50 millimeters magnet ring, magnetic is larger to the wearing and tearing of upper former, and upper former adopts wear-resisting Cr12 material.Upper and lower core iron adopts the ferrocobalt material, and ferrocobalt has advantages of that magnetic permeability is high.
Adopt six times oriented moulding, the first five time briquetting pressure 10 MPas, pressurize 5 seconds; Last briquetting pressure 15 MPas, pressurize 10 seconds.It is because the former height is limited to reduce the height of magnet ring behind each oriented moulding that the first five time pressurization and dwell time produce that short magnet ring increases to some extent.The scheme that also can select the pressure primary and secondary to increase.
Comparative example 3:
Adopt the liquidate technical scheme of an oriented moulding of two utmost points to prepare the radial oriented magnet ring blank of 20 millimeters of high 30 millimeters internal diameters.
Comparative example 4:
Adopt four technical schemes of extremely gathering oriented mouldings of magnetic to prepare the radial oriented magnet ring blank of 20 millimeters of high 30 millimeters internal diameters.
The tabulation of table 2 performance comparison
When to produce ratio of height to diameter be 3 molded blank, adopt prior art very low at half waist place alignment magnetic field of die cavity, so remanent magnetism and maximum magnetic energy product are also very low, the main magnetic property of magnet ring is near the isotropism level.Adopt device and method alignment magnetic field of the present utility model and main magnetic property all to remain on a higher level.
Embodiment 3:
Production highly is 40 millimeters, and internal diameter is 20 millimeters radial oriented magnet ring.Produce when highly being 30～50 millimeters magnet ring, No. 45 steel of upper former employing are made, and No. 45 steel have that anti-wear performance is good, magnetic permeability is moderate, the advantage that price is low.Upper and lower core iron adopts the high ferrocobalt material of magnetic permeability.
Adopt four times oriented moulding, first three time briquetting pressure 5 MPas, pressurize 3 seconds; Last briquetting pressure 10 MPas, pressurize 8 seconds.
Comparative example 5:
Adopt the liquidate technical scheme of an oriented moulding of two utmost points to prepare the radial oriented magnet ring blank of 20 millimeters of high 40 millimeters internal diameters.
Comparative example 6:
Adopt four technical schemes of extremely gathering oriented mouldings of magnetic to prepare the radial oriented magnet ring blank of 20 millimeters of high 40 millimeters internal diameters.
The tabulation of table 3 performance comparison
When the production ratio of height to diameter is 2 molded blank, adopt prior art lower at half waist place alignment magnetic field of die cavity, can only be used for the preparation of low performance magnet ring.Adopt device and method alignment magnetic field of the present utility model still very high, can realize the production of high-performance radial magnetic ring.
Should be understood that the present embodiment only is used for explanation the utility model and is not used in the scope of the present utility model that limits.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (6)
1. the orientation pressure setting of a radial oriented magnet ring, described orientation pressure setting is located on the support of press, and described press comprises seaming chuck (1), push-down head (2) and controller (3); It is characterized in that, described orientation pressure setting comprises former and 3 magnet exciting coils (4); The cross section of described former is equilateral triangle, and described former comprises the upper former (5) made by permeability magnetic material and by the lower former (6) of making without the magnetic metal material; The inner face of 3 magnet exciting coils is connected with three sides of former respectively, is provided with the cylindrical main yoke (7) that is connected with the side of former in the described magnet exciting coil, and the outer face of main yoke and the outer face of magnet exciting coil flush;
Described former middle part is provided with cylindrical hole (13), be provided with cylindrical lower core iron (9) in the cylindrical hole, described lower core iron is fixed on the support of press, and the push-down head of described press is provided with the tubulose low punch (10) that can stretch between former and the lower core iron and move up and down with respect to former and lower core iron; The seaming chuck of described press is provided with and can stretches into cavity that lower core iron and former form and consist of the tubulose upper punch (11) of die cavity with former, lower core iron, low punch; Controller is connected with 3 magnet exciting coils with upper and lower pressure head respectively.
2. the orientation pressure setting of radial oriented magnet ring according to claim 1, it is characterized in that, be provided with the cylindrical upper core iron (12) that is fixedly connected with upper punch in the upper punch, the upper end of described lower core iron is positioned at the top of former, and the lower end of described upper core iron is positioned at the top of upper punch lower end.
3. the orientation pressure setting of radial oriented magnet ring according to claim 1 is characterized in that, the outer face of described main yoke and the outer face of magnet exciting coil are provided with circular secondary yoke (8).
4. the orientation pressure setting of radial oriented magnet ring according to claim 1 is characterized in that, three bights of described former are respectively equipped with the plane perpendicular to corresponding bisector of angle.
5. the orientation pressure setting of radial oriented magnet ring according to claim 1 is characterized in that, the height ratio of described lower former and upper former is 4:1 to 5:1.
6. according to claim 1 and 2 or the orientation pressure setting of 3 or 4 or 5 described radial oriented magnet rings, it is characterized in that, the ratio between the height of upper former and the lower core iron external diameter is 1:1 to 1.2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220477303.9U CN202771951U (en) | 2012-09-19 | 2012-09-19 | Orientation pressing device of radial orientation magnet ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220477303.9U CN202771951U (en) | 2012-09-19 | 2012-09-19 | Orientation pressing device of radial orientation magnet ring |
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| CN202771951U true CN202771951U (en) | 2013-03-06 |
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ID=47778504
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|---|---|---|---|
| CN201220477303.9U Expired - Lifetime CN202771951U (en) | 2012-09-19 | 2012-09-19 | Orientation pressing device of radial orientation magnet ring |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102982993A (en) * | 2012-09-19 | 2013-03-20 | 横店集团东磁股份有限公司 | Orientation pressing device and manufacturing method of radial orientation magnetic ring |
| CN103567439A (en) * | 2013-08-09 | 2014-02-12 | 浙江东阳东磁有限公司 | Oriented pressing device and method for large-height-to-diameter-ratio radiation ring |
| CN107331500A (en) * | 2017-08-28 | 2017-11-07 | 佛山市顺德区江粉霸菱磁材有限公司 | One kind is used for special radial magnetic-field orientation forming module |
-
2012
- 2012-09-19 CN CN201220477303.9U patent/CN202771951U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102982993A (en) * | 2012-09-19 | 2013-03-20 | 横店集团东磁股份有限公司 | Orientation pressing device and manufacturing method of radial orientation magnetic ring |
| CN102982993B (en) * | 2012-09-19 | 2014-12-17 | 横店集团东磁股份有限公司 | Orientation pressing device and manufacturing method of radial orientation magnetic ring |
| CN103567439A (en) * | 2013-08-09 | 2014-02-12 | 浙江东阳东磁有限公司 | Oriented pressing device and method for large-height-to-diameter-ratio radiation ring |
| CN107331500A (en) * | 2017-08-28 | 2017-11-07 | 佛山市顺德区江粉霸菱磁材有限公司 | One kind is used for special radial magnetic-field orientation forming module |
| CN107331500B (en) * | 2017-08-28 | 2024-02-23 | 佛山市顺德区江粉霸菱磁材有限公司 | Special radial magnetic field orientation forming die |
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