CN203444970U - Orientation pressing device of radiation ring of large height-diameter ratio - Google Patents
Orientation pressing device of radiation ring of large height-diameter ratio Download PDFInfo
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- CN203444970U CN203444970U CN201320513858.9U CN201320513858U CN203444970U CN 203444970 U CN203444970 U CN 203444970U CN 201320513858 U CN201320513858 U CN 201320513858U CN 203444970 U CN203444970 U CN 203444970U
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Abstract
The utility model discloses an orientation pressing device of a radiation ring of a large height-diameter ratio. A pressing machine comprises an upper pressing head, a lower pressing head and a controller. The orientation pressing device is arranged on a support of the pressing machine and comprises a controller, a lower female die made of non-permeability magnetic materials and an upper female die arranged on the lower female die and made of permeability magnetic materials, and the upper female die and the lower female die are provided with corresponding cylindrical cavities. An upper magnet exciting coil is arranged on the lower surface of the upper pressing head, upper core iron connected with the lower surface of the upper pressing head is arranged in the upper magnet exciting coil, the upper core iron is provided with a tubular upper punch, and a cylindrical upper core bar is arranged in the upper punch and capable of moving up and down relative to the upper punch. The orientation pressing device has the advantages that the orientation pressing device can be used for manufacturing the radiation ring which is high in intrinsic coercive field, little in cracking, high in bending strength, large in height-diameter ratio, stable in magnetic property and good in evenness.
Description
Technical field
The utility model relates to permanent magnetic material preparation field, especially relate to that a kind of HCJ is high for making, cracking less, the orientation pressure setting of the larger ratio of height to diameter radiation ring of stable, the good uniformity of high, the larger ratio of height to diameter of bending strength, magnetic property.
Background technology
The advantages such as sintered NdFeB radiation ring product is mainly used in high-grade rare-earth permanent-magnet electric machine field, has and is convenient to assembling, and electric machine rotation is steady, noise is little, market prospects are very good.A difficult problem for production radiation ring mainly contains two: difficult problem is how to obtain the high and uniform radial oriented magnetic field of magnetic field intensity; Another difficult problem is radiation ring mutability, cracking.Current radial oriented technology mainly contains three kinds: a kind of is the bipolar head method that liquidates, and produces after utilizing two relative exciting fields of homopolarity to liquidate and is orientated to extraradial magnetic field, and for example patent 00125615.7; Another kind of method for alignment is four extremely poly-magnetic methods, adopts the method for four cartridge homopolarities poly-magnetic to center to be orientated, and for example patent 01111509.2; Also having a kind of is circumferential segmentation alignment method, and each orientation only accounts for the very little part at the circumferential 360 ° of angles of radiation ring, completes the method for 360 ° of orientations by alignment magnetic field and the relative rotation of die cavity and magnetic, for example 200710106670.1.
The lower shortcoming in radial oriented magnetic field when bipolar the extremely poly-magnetic method of the method and four that liquidates exists the radiation ring of preparing larger ratio of height to diameter.According to magnetic field continuity principle, when the ratio of height to diameter of molded blank is greater than 1, even if in the ideal situation (magnetic resistance, leakage field, magnetic loss etc. are all disregarded) and adopt the ferro-cobalt that saturated pole intensity is the highest (
h o be about 2.4T) do core iron, when core iron magnetic field intensity reaches capacity, alignment magnetic field is only 1.25T, lower than NdFeB magnetic powder, is orientated conventional 1.5T.In actual production, magnetic resistance, leakage field are unavoidable, so when to adopt prior art to prepare ratio of height to diameter be 0.5 radial oriented radiation ring, alignment magnetic field is difficult to reach 1.5T, cannot realize the making of the radial oriented radiation ring of larger ratio of height to diameter high-performance.
The third method exists production efficiency low, and radiation ring is the problems such as the degree of orientation there are differences in circumferential 360 °.
Chinese patent CN00125615.7, authorizes open day May 2 calendar year 2001, discloses the manufacture craft of the radial oriented sintered NdFeB radiation of a kind of one-shot forming ring, and a. inserts the good powder of scale 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, now seaming chuck, upper plug, upper electromagnet DL synchronization suspend after walking to seaming chuck and contacting with negative template; C. power-on and power-off magnet after suspending, radiation ring is magnetized and start radial oriented simultaneously; D. when reach >=1.5T of the magnetic field intensity magnetizing, seaming chuck continues to press down and carries out two-way compacting, release during reach >=15 MPa of pressure; E. go up lower electromagnet oppositely demagnetize (now having completed the radial oriented action of powder); F. patrix lifting, counterdie exit, the depanning of radiation ring; G. the radiation ring after depanning carry out sintering product.What this invention adopted is bipolar the method that liquidates, the lower shortcoming in radial oriented magnetic field while there is the radiation ring of preparing larger ratio of height to diameter.
Chinese patent CN01111509.2, authorize open day on October 16th, 2002, a kind of radial oriented compacting preparation method of multiple polymerization of radiation ring is disclosed, comprise magnet exciting coil, main yoke, former, service area, poly-magnetic axis core, lower plug, upper plug, secondary yoke, distributing device, scraper plate, seaming chuck, patrix pressure head, spring, 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, through minute upper and lower plug of upper and lower two route after poly-magnetic axis in-core collision of the same sex magnetic field behind service area, 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.This invention is to adopt the method for four cartridge homopolarities poly-magnetic to center to be orientated, the lower shortcoming in radial oriented magnetic field while there is the radiation ring of preparing larger ratio of height to diameter.
Summary of the invention
In order to overcome prior art, producing lower problem and the inhomogeneous problem of circumferential orientation degree of radiation ring magnetic property of larger ratio of height to diameter, provide that a kind of HCJ is high for making, cracking less, the orientation pressure setting of the larger ratio of height to diameter radiation ring of stable, the good uniformity of high, the larger ratio of height to diameter of bending strength, magnetic property.
To achieve these goals, the utility model is by the following technical solutions:
An orientation pressure setting for radiation ring, 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 controller, the lower former of being made by non-magnet_conductible material and is located at the upper former of being made by permeability magnetic material on lower former, and upper and lower former is provided with corresponding cylindrical cavity;
Seaming chuck lower surface is provided with magnet exciting coil, is provided with the upper core iron being connected with seaming chuck lower surface in upper magnet exciting coil; Upper core iron is provided with tubulose upper punch, is provided with the cylindrical upper plug that can move up and down with respect to upper punch in upper punch;
The former back-up block that support is provided with lower magnet exciting coil and is made by non-magnet_conductible material; Former back-up block is positioned at lower magnet exciting coil, and lower former is positioned on former back-up block, and former back-up block is provided with the lower cavity corresponding with cylindrical cavity;
Push-down head is provided with for penetrating the tubulose low punch in lower cavity, is provided with the lower plug with low punch matched in clearance in low punch, and low punch sidewall is provided with axially extended slotted hole, between former back-up block and lower plug, is provided with the connecting rod through slotted hole; Controller is electrically connected to press and magnet exciting coil respectively.
Orientation pressure setting of the present utility model can make larger ratio of height to diameter
(H/D>=1) radiation ring section oriented moulding, 1T above (the about 0.5T of alignment magnetic field providing far above conventional method) can be provided alignment magnetic field, and the main magnetic parameter remanent magnetism Br of magnet ring and maximum magnetic energy product (BH) max are significantly improved; This device alignment magnetic field is even in addition, magnet ring magnetic property high conformity.
As preferably, described upper core iron lower surface is provided with the rounded groove of cross section that Open Side Down, and the internal diameter on described upper punch top equals the diameter of groove, and the internal diameter on described upper punch top is greater than the internal diameter of upper punch bottom; The axial section of described upper plug is in T shape, and upper plug top is positioned at the cavity that groove and upper punch top surround, and is provided with spring in groove, and both ends of the spring contacts with upper surface and the groove roof of upper plug respectively.
The drawing method of the orientation pressure setting of larger ratio of height to diameter radiation ring of the present utility model, comprises the steps:
(3-1) magnetic preparation:
The composition of magnetic meets general formula R
a(Fe
1-xt
x)
100-a-b-c-dm
bq
cb
dwherein R is all rare earth elements that comprises Y, T is Co and Ni, and M is at least one in Cu, Nb, Zr, Mn, Mo, Cr, and Q is at least one in Al, Zn, Ag, Ti, a, b, c, d, x meet respectively: 15≤a≤25,0≤b≤2,0.5≤c≤3,6≤d≤8,0≤x≤10, surplus is Fe;
To put into vaccum sensitive stove according to the metal of said ratio and alloy, through dehumidifying pump-down process vacuum degree is reached after 5Pa, in body of heater, be filled with high-purity argon gas and carry out melting, pour melted molten steel on water cooled copper mould or copper roller chilling, obtain R
2fe
14b is main alloy mutually;
Under the protection of inert gas, by R
2fe
14b is that main alloy carries out fragmentation by Mechanical Crushing or hydrogen fragmentation mutually, and will with airflow milling fragmentation, make magnetic through broken pulverized powder, by adjusting the pressure of airflow milling grinding and the rotating speed control granularity of magnet powder of separation wheel, granularity of magnet powder has following characteristics: magnetic powder particle particle mean size is 2-10 μ m; The magnetic powder particle that is less than 3 μ m is 15 ~ 25%, and the magnetic powder particle that is greater than 5 μ m is 35 ~ 60%;
The Q powder that adds 0 ~ 2wt% in magnetic, Q powder mean particle sizes is less than 3 μ m, after 0.5 ~ 10 hour batch mixing, magnetic is placed more than 8 hours standby;
(3-2) height of the radiation ring that orientation is suppressed is as required set the frequency n that orientation is suppressed in controller; The number of times sequence number of setting orientation compacting is i, and the initial value of i is 1; The each orientation of setting need to be added in the pressure on upper and lower pressure head while suppressing and need the time of pressurize;
(3-3) orientation compacting for the first time:
(3-3-1) controller is controlled push-down head by press and is driven low punch to go upward to upper former bottom and keep stable;
(3-3-2) with instrument, magnetic is put into the cavity that upper former, low punch and lower plug form; Seaming chuck drives upper punch descending, and upper plug contacts with lower plug, and upper former, upper punch, low punch and lower plug form die cavity;
(3-3-3) controller is controlled magnet exciting coil work, and controller is controlled at and on upper and lower pressure head, adds default pressure, and pressurize predetermined time, and the magnetic in die cavity is oriented compacting and forms i time and suppress radiation ring;
(3-4) repeatedly orientation compacting:
As i < n, controller is controlled magnet exciting coil and is quit work, and upper and lower drift moves down simultaneously, and i compacting radiation ring moved in the cylindrical cavity of lower former;
The up drive upper punch of seaming chuck is separated with upper former, with instrument, in the cavity of i compacting radiation ring upper surface, lower plug and the formation of upper former, adds magnetic;
Make i value increase by 1, repeat the orientation pressing operation in (3-3-3);
(3-5) radiation ring has been suppressed:
Upper and lower pressure head is simultaneously up, and low punch ejects upper former by whole radiation ring, completes the moulding of a radial oriented radiation ring.
In the sintering R-Fe-B material of magnetic, mainly comprise two-phase: one is to be R mutually to the ferromagnetic of magnetic property contribution maximum
2fe
14b phase, is referred to as principal phase; Another kind is Grain-Boundary Phase, is a kind of rich R phase.The simple R that increases
2fe
14the percentage of B phase, can not improve the magnetic property of radiation ring.
The utility model, by increasing rich R phase, has solved the problem that magnetic property is low and cracking is many of larger ratio of height to diameter radiation ring:
(1) fusing point of rich R phase is low, and rich R becomes liquid phase in the sintering process of magnet generation technique.Rich R impels magnet densification mutually, improves thus the magnetization of radiation ring.
(2) rich R has overcome R mutually
2fe
14the shortcoming that the nucleating point that causes reverse magnetic domain of B phase crystal boundary increases, increases radiation ring coercive force.
(3) rich R is nonmagnetic mutually, R
2fe
14b is isolated by rich R, has increased the coercive force of radiation ring.
When the dispersion of the rich R phase of crystal boundary is not enough to cover the crystal boundary of principal phase, is thering is no to there will be coercitive part to reduce on capped crystal boundary, thereby making the squareness ratio of radiation ring impaired, and having influence on the magnetic property of R-Fe-B material.
Improve the percent by volume of Grain-Boundary Phase and add by secondary the HCJ (Hcj) that distribution that Grain-Boundary Phase improves Grain-Boundary Phase can improve magnet effectively.
In addition, Grain-Boundary Phase is that a kind of hardness is lower, plasticity is organized preferably, increases the mechanical performance that Grain-Boundary Phase can also improve magnet.
In a word, the utility model passes through to optimize the Composition Design of magnetic, thereby increases Grain-Boundary Phase percent by volume and improve its distribution and improve magnet HCJ (Hcj); By controlling granularity of magnet powder distribution, improve the formability of magnetic; By increasing the good Grain-Boundary Phase percent by volume of plasticity, improve the mechanical performance of radiation ring; Thereby by segmentation, be orientated the ratio of height to diameter raising alignment magnetic field that reduces every section of radiation ring;
Therefore, the utility model adopt above-mentioned magnetic and orientation pressure setting can be made into there is good plasticity, cracking less, radiation ring that magnetic property is high.
During orientation compacting, to magnet exciting coil, switch on power, magnet exciting coil produces magnetic field, and the magnetic line of force converges by upper and lower plug, after then through die cavity, magnetic being orientated, enters upper former, by press support, forms magnetic loop.
Adopt orientation pressure setting of the present utility model to be orientated and to be pressed into radial oriented radiation ring magnetic, then radiation ring is put into vacuum sintering furnace sintering, 1000 ~ 1120 ℃ of sintering temperatures, are incubated 0.5 ~ 6 hour, and carry out necessary temper.
The utility model adopts high rare earth composition design, and adds the volume ratio of a large amount of Q elements or Q powder increase Grain-Boundary Phase, thereby improves the HCJ Hcj of magnet, improves radiation ring mechanical performance; By the meal in magnetic and fine powder ratio, control, thereby improve orientation and the formability of magnetic, improve the resistance to processability of radiation ring simultaneously; Adopt upper and lower former design to realize radiation annulate shaft to the compacting of substep orientation, thereby reduce the ratio of height to diameter of each orientation compacting, improve alignment magnetic field, improve radiation ring magnetic property.
The alignment magnetic field of orientation pressure setting of the present utility model is high, and the radiation ring magnetic property of making is high; In the making of radiation ring and processing use procedure, be all not easy the arrisdefect that ftractures.
Radiation ring for larger ratio of height to diameter, adopt repeatedly orientation compacting to make radiation ring along with the increase of the number of times of orientation compacting, the height of the radiation ring being pressed into constantly increases, when orientation is suppressed the last time, with a larger pressure, suppress again, thereby obtain a whole radiation ring with larger ratio of height to diameter (ratio of height to diameter >=1).
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 described upper former and lower plug external diameter is 1:1 to 1.2:1.
As preferably, described upper plug and lower plug are made by permeability magnetic material.
As preferably, upper punch and low punch are made by nonmagnetic steel material.
Therefore, the utlity model has following beneficial effect:
(1) in the situation that of same heavy rare earth consumption, the HCJ of the radiation ring of making is higher; (2) the radiation ring opening of making is few, and bending strength is high, can reach 90N/mm
2above; (2) realized larger ratio of height to diameter (radiation ring height
h/ radiation ring external diameter
r>=1) orientation of radial oriented radiation ring compacting, more than alignment magnetic field remains on 1T; (3) adopt and to be repeatedly orientated that the radial oriented radiation ring magnetic property that compact technique makes is stable, good uniformity.
Accompanying drawing explanation
Fig. 1 is orientation pressure setting structural representation of the present utility model;
Fig. 2 is a kind of flow chart of embodiment of the present utility model.
In figure: lower former 1, upper former 2, seaming chuck 3, upper magnet exciting coil 4, upper core iron 5, upper punch 6, upper plug 7, lower magnet exciting coil 8, former back-up block 9, push-down head 10, low punch 11, lower plug 12, groove 13, spring 14, die cavity 15, lower cavity 16.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment is as shown in Figure 1 a kind of orientation pressure setting of larger ratio of height to diameter radiation ring, and orientation pressure setting is located on the support of press, and described press comprises seaming chuck 3, push-down head 10 and controller; Be orientated pressure setting and comprise controller, the lower former 1 of being made by non-magnet_conductible material and be located at the upper former 2 of being made by permeability magnetic material on lower former, upper and lower former is provided with corresponding cylindrical cavity;
Seaming chuck lower surface is provided with magnet exciting coil 4, is provided with the upper core iron 5 being connected with seaming chuck lower surface in upper magnet exciting coil; Upper core iron is provided with tubulose upper punch 6, is provided with the cylindrical upper plug 7 that can move up and down with respect to upper punch in upper punch;
The former back-up block 9 that support is provided with lower magnet exciting coil 8 and is made by non-magnet_conductible material; Former back-up block is positioned at lower magnet exciting coil, and lower former is positioned on former back-up block, and former back-up block is provided with the lower cavity 16 corresponding with cylindrical cavity;
Push-down head is provided with for penetrating the tubulose low punch 11 in lower cavity, in low punch, be provided with the lower plug 12 with low punch matched in clearance, low punch sidewall is provided with axially extended slotted hole, between former back-up block and lower plug, is provided with the connecting rod through slotted hole; Controller is electrically connected to press and magnet exciting coil respectively.
Upper core iron lower surface is provided with the rounded groove 13 of cross section that Open Side Down, and the internal diameter on upper punch top equals the diameter of groove, and the internal diameter on upper punch top is greater than the internal diameter of upper punch bottom; The axial section of upper plug is in T shape, and upper plug top is positioned at the cavity that groove and upper punch top surround, and is provided with spring 14 in groove, and both ends of the spring contacts with upper surface and the groove roof of upper plug respectively.
The height ratio of lower former and upper former is 4:1.Ratio between the height of upper former and lower plug external diameter is 1.2:1.Upper plug and lower plug are made by permeability magnetic material.Upper punch and low punch are made by nonmagnetic steel material.The height ratio of lower former and upper former is 4:1.
As shown in Figure 2, making a kind of height is 40 millimeters, and external diameter is 30 millimeters, and internal diameter is the drawing method of the radial oriented radiation ring of 20 millimeters, comprises the steps:
Step 100, magnetic preparation:
By (Nd
0.9dy
0.1)
17(Fe
0.95co
0.05)
74.9(Cu
0.2nb
0.8)
0.5(Al
0.8ga
0.2)
1b
6.6proportioning raw material; To put into vaccum sensitive stove according to the metal of said ratio and alloy, through dehumidifying pump-down process vacuum degree is reached after 5Pa, in body of heater, be filled with high-purity argon gas and carry out melting, then melted molten steel is poured into chilling on water cooled copper mould or copper roller, obtain alloy sheet;
Under the protection of inert gas, alloy sheet is galled to the broken magnetic of making through Mechanical Crushing and air-flow successively, magnetic particle mean size is 4.2 μ m; The magnetic powder particle that is less than 3 μ m is 16%, and the magnetic powder particle that is greater than 5 μ m is 58%.The Al powder that adds 0.2wt% in magnetic, Al powder mean particle sizes 0.5 μ m, through 2 hours batch mixings and place 10 hours standby;
Step 200, upper and lower plug and upper former adopt pure iron material, and the advantage of pure iron material is that price is low, and magnetic permeability is high.Selection is highly the upper former of 20 millimeters; Selected upper former is fixed on lower former;
In controller, the frequency n of default orientation compacting is 3 times, and the pressure adding on upper and lower pressure head during orientation compacting is for the first time 4 MPas, and the dwell time is 2 seconds; Be orientated for the second time pressing pressure 6 MPas, pressurize 4 seconds; Be orientated for the third time pressing pressure 10 MPas, pressurize 12 seconds; The number of times sequence number of setting orientation compacting is i, and the initial value of i is 1;
Step 300, orientation compacting for the first time:
Step 301, controller is controlled push-down head and is driven low punch to go upward to former bottom and keep stable;
Step 302, puts into by magnetic the cavity that upper former, low punch and lower plug form with instrument; Seaming chuck drives upper punch descending, and upper plug contacts with lower plug, and upper former, upper punch, low punch and lower plug form die cavity 15;
Step 303, controller is controlled magnet exciting coil work, and controller is controlled at and on upper and lower pressure head, adds default pressure, and pressurize predetermined time, and the magnetic in die cavity is oriented compacting and forms i time and suppress radiation ring;
Step 400, repeatedly orientation compacting:
As i < 3, controller is controlled magnet exciting coil and is quit work, and upper and lower drift moves down simultaneously, and i compacting radiation ring moved in the cylindrical cavity of lower former;
The up drive upper punch of seaming chuck is separated with upper former, with instrument, in the cavity of i compacting radiation ring upper surface, lower plug and the formation of upper former, adds magnetic;
Make i value increase by 1, the orientation pressing operation in repeating step 303;
Step 500, radiation ring has been suppressed:
Upper and lower pressure head is simultaneously up, and low punch ejects upper former by whole radiation ring, completes the moulding of a radial oriented radiation ring.
Dividing three orientation compactings is that the object of front twice pressurization is that the magnetic after orientation is fixed in order to reduce the ratio of height to diameter of each orientation compacting radiation ring; The magnetic pine dress of each orientation compacting is highly 20 millimeters, is highly about 12 millimeters after compacting; But leave space will to further raising density, to improve the repeatedly adhesion of radiation interannular; The object of last pressurization is further to improve shaped radiation ring density.
Comparative example 1:
Adopt two utmost points to liquidate and be once orientated the radial oriented radiation ring blank that the technical scheme of suppressing is prepared 20 millimeters of high 40 mm outer diameter 30 internal diameters.
Comparative example 2:
The technical scheme that adopts four extremely poly-magnetic to be once orientated compacting is prepared the radial oriented radiation ring blank of 20 millimeters of high 40 mm outer diameter 30 internal diameters.
Comparative example 3:
Adopt circumferential segmentation orientation scheme to prepare the radial oriented radiation ring blank of 20 millimeters of high 40 mm outer diameter 30 internal diameters.
Comparative example 4:
Radiation ring Composition Design in comparative example 4 and alloy preparation method are identical with embodiment of the present utility model.Granularity of magnet powder is different from embodiment of the present utility model: magnetic particle mean size, 3 μ m; Be greater than the particle approximately 55% of 3 μ m.
Other device and method is identical with embodiment of the present utility model.
The main magnetic property of table 1, mechanical performance and production efficiency contrast list
When producing the radiation ring green compact of height 40 external diameter 30 internal diameters 20, comparative example 1 and comparative example 2 alignment magnetic fields are about 0.5T, and adopt more than device and method alignment magnetic field of the present utility model can reach 1T, so adopt radiation ring remanent magnetism and maximum magnetic energy product prepared by apparatus and method of the present utility model to have obvious lifting.Formulation optimization and granularity of magnet powder control due to this utility model makes the compression strength of radiation ring also have obvious lifting in addition.Comparative example 3 magnetic properties and embodiment 1 approach, but the circumferential remanent magnetism consistency of comparative example 3 is poor, and production efficiency is lower.Comparative example 4 is because magnetic is more carefully unfavorable for orientation, and remanent magnetism has obvious reduction; In addition, magnetic is carefully easily oxidized and causes HCJ consistency bad.
Should be understood that the present embodiment is only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (6)
1. an orientation pressure setting for larger ratio of height to diameter radiation ring, is orientated pressure setting and is located on the support of press, and described press comprises seaming chuck (3), push-down head (10) and controller; It is characterized in that, the lower former (1) that described orientation pressure setting comprises controller, made by non-magnet_conductible material and be located at the upper former (2) of being made by permeability magnetic material on lower former, upper and lower former is provided with corresponding cylindrical cavity;
Described seaming chuck lower surface is provided with magnet exciting coil (4), is provided with the upper core iron (5) being connected with seaming chuck lower surface in upper magnet exciting coil; Upper core iron is provided with tubulose upper punch (6), is provided with the cylindrical upper plug (7) that can move up and down with respect to upper punch in upper punch;
The former back-up block (9) that described support is provided with lower magnet exciting coil (8) and is made by non-magnet_conductible material; Former back-up block is positioned at lower magnet exciting coil, and lower former is positioned on former back-up block, and former back-up block is provided with the lower cavity (16) corresponding with cylindrical cavity;
Described push-down head is provided with for penetrating the tubulose low punch (11) in lower cavity, in low punch, be provided with the lower plug (12) with low punch matched in clearance, low punch sidewall is provided with axially extended slotted hole, between former back-up block and lower plug, is provided with the connecting rod through slotted hole; Controller is electrically connected to press and magnet exciting coil respectively.
2. the orientation pressure setting of larger ratio of height to diameter radiation ring according to claim 1, it is characterized in that, described upper core iron lower surface is provided with the rounded groove (13) of cross section that Open Side Down, the internal diameter on described upper punch top equals the diameter of groove, and the internal diameter on described upper punch top is greater than the internal diameter of upper punch bottom; The axial section of described upper plug is in T shape, and upper plug top is positioned at the cavity that groove and upper punch top surround, and is provided with spring (14) in groove, and both ends of the spring contacts with upper surface and the groove roof of upper plug respectively.
3. the orientation pressure setting of larger ratio of height to diameter radiation 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.
4. the orientation pressure setting of larger ratio of height to diameter radiation ring according to claim 1, is characterized in that, the ratio between the height of described upper former and lower plug external diameter is 1:1 to 1.2:1.
5. the orientation pressure setting of larger ratio of height to diameter radiation ring according to claim 1, is characterized in that, described upper plug and lower plug are made by permeability magnetic material.
6. according to the orientation pressure setting of the larger ratio of height to diameter radiation ring described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that, upper punch and low punch are made by nonmagnetic steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320513858.9U CN203444970U (en) | 2013-08-22 | 2013-08-22 | Orientation pressing device of radiation ring of large height-diameter ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320513858.9U CN203444970U (en) | 2013-08-22 | 2013-08-22 | Orientation pressing device of radiation ring of large height-diameter ratio |
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| CN203444970U true CN203444970U (en) | 2014-02-19 |
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| CN201320513858.9U Expired - Lifetime CN203444970U (en) | 2013-08-22 | 2013-08-22 | Orientation pressing device of radiation ring of large height-diameter ratio |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493232A (en) * | 2016-12-20 | 2017-03-15 | 北京天仁道和新材料有限公司 | A kind of punch-head assembly and compression molding device |
| CN107427917A (en) * | 2015-03-20 | 2017-12-01 | 日立化成株式会社 | The forming method of formed body based on compression moulding |
-
2013
- 2013-08-22 CN CN201320513858.9U patent/CN203444970U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107427917A (en) * | 2015-03-20 | 2017-12-01 | 日立化成株式会社 | The forming method of formed body based on compression moulding |
| CN106493232A (en) * | 2016-12-20 | 2017-03-15 | 北京天仁道和新材料有限公司 | A kind of punch-head assembly and compression molding device |
| CN106493232B (en) * | 2016-12-20 | 2019-02-12 | 北京天仁道和新材料有限公司 | A kind of punch-head assembly and compression molding device |
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