CN206356580U - Magnetic shoe molding die - Google Patents
Magnetic shoe molding die Download PDFInfo
- Publication number
- CN206356580U CN206356580U CN201621493874.6U CN201621493874U CN206356580U CN 206356580 U CN206356580 U CN 206356580U CN 201621493874 U CN201621493874 U CN 201621493874U CN 206356580 U CN206356580 U CN 206356580U
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- CN
- China
- Prior art keywords
- magnetic
- magnetosphere
- die head
- plane
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model is related to forming magnetic tile technical field, especially a kind of magnetic shoe molding die, including upper die head, lower die head, cavity plate and for magnetizing, the coil of demagnetization, upper die head, forming cavity is enclosed between lower die head and cavity plate, coil is located at the outside of die cavity, the upper end of lower die head has every magnetosphere, it is the arc surface projected upwards every the upper surface of magnetic, include plane and two inclined-planes positioned at plane two ends every the lower surface of magnetosphere, two inclined-planes are symmetrical, inclined-plane is inclined upwardly by outer to interior, magnetic shoe molding die of the present utility model in lower die head by setting every magnetosphere, there is the high-intensity magnetic field of a thick section correspondence coil middle part every the centre of magnetosphere, respectively have every the both sides of magnetosphere and gradually become both sides magnetic induction line in light filling bar correspondence coil and gradually die down position, so as to realize that the intrados magnetic material of whole magnetic shoe is evenly distributed, the density of intrados keeps preferable uniformity, so as to avoid crankshaft bearing from shrinking the phenomenon ftractureed, improve the yield rate of crankshaft bearing.
Description
Technical field
The utility model is related to forming magnetic tile technical field, especially a kind of magnetic shoe molding die.
Background technology
The shoe product processes of wetpressing pressing under magnetic field are different from dry production, and magnetic shoe is in a form of slurry in hydraulic pressure
It is compressing by mould on machine, then sinter, during manufacturing, can occur the crack defect of diversified forms simultaneously,
Such as axle height splits (end check), side crackle, irregular bar shaped crackle, segmentation crack, inner arc and secretly split with end face slabbing in various degree
Crack defect, the yield rate of serious magnetic shoe production.
Difference in height is bigger, cambered surface the is bigger magnetic shoe or inner arc at arc top to its two ends of magnetic shoe are particularly in process of production
Round angle is bigger, and the phenomenon that crackle occurs for this kind of magnetic shoe is just serious.
Utility model content
The technical problems to be solved in the utility model is：Easily occur in manufacturing process to solve magnetic shoe in the prior art
The problem of crackle, a kind of magnetic shoe molding die is now provided, the mould is used to solve the problem of crankshaft bearing intrados ftractures, crankshaft bearing
Magnetic shoe of the finger widths in more than 120mm.
The utility model solves the technical scheme that its technical problem used：A kind of magnetic shoe molding die, including upper mould
Head, lower die head, cavity plate and the coil for magnetizing, demagnetizing, enclose forming cavity, institute between the upper die head, lower die head and cavity plate
The outside that coil is located at die cavity is stated, the upper end of the lower die head has every magnetosphere, and the upper surface every magnetosphere is to project upwards
Arc surface, the lower surface every magnetosphere includes plane and two inclined-planes positioned at plane two ends, two inclined-planes symmetrically,
The inclined-plane is inclined upwardly by outer to interior, and the angle of the inclined-plane and plane is α, wherein, α span is 60 ° -70 °.
It is arranged to arc surface every the upper surface of magnetosphere in this programme, lower surface is arranged to plane and two inclined-planes so that every
One section of magnetic resistance where magnetosphere mid-plane is larger, and one section of magnetic resistance is relatively low where inclined-plane, because the magnetic field of coil inside is by interior
Outwards gradually die down, the middle part magnetic induction line of coil inside is most close, the edge magnetic induction line of coil inside is relatively sparse, magnetic shoe
Middle part is located at the magnetic induction line most close position of coil, correspondence this section set it is thicker every magnetosphere, magnetic resistance is larger, magnetic shoe
Both sides position is located at the magnetic induction line gradually sparse position of coil, and correspondence is gradually thinning every magnetosphere, and magnetic resistance is tapered into, so as to realize
The intrados magnetic material of whole magnetic shoe is evenly distributed, and the density of intrados keeps preferable uniformity, so as to avoid magnetic shoe from receiving
Contracting is ftractureed.
Further, the material every magnetosphere is that 7Mn15Cr2Al3V2WMo (nonmagnetic steel) or 1Cr18Ni9Ti is (stainless
Steel).
The beneficial effects of the utility model are：Magnetic shoe molding die of the present utility model in lower die head by setting every magnetic
Layer, has the high-intensity magnetic field of a thick section correspondence coil middle part every the centre of magnetosphere, respectively has gradually change light filling bar pair every the both sides of magnetosphere
Both sides magnetic induction line is answered in coil gradually to die down position, so that realize that the intrados magnetic material of whole magnetic shoe is evenly distributed, inner arc
The density in face keeps preferable uniformity, so as to avoid crankshaft bearing from shrinking the phenomenon ftractureed, improves the yield rate of crankshaft bearing.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the schematic diagram of the utility model magnetic shoe molding die.
In figure：1st, upper die head, 2, lower die head, 3, cavity plate, 4, coil, 5, every magnetosphere, 501, plane, 502, inclined-plane, 6, magnetic
Watt；
α：Angle between inclined-plane and plane.
Embodiment
The utility model is described in further detail presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram,
Only illustrate basic structure of the present utility model in a schematic way, therefore it only shows the composition relevant with the utility model, direction
With can be only used for helping the description to the feature in accompanying drawing with reference to (for example, upper and lower, left and right, etc.).Therefore, not in limit
Detailed description below is used in property meaning processed, and only by appended claims and its equivalents are asked to limit
The scope of the theme of protection.
Embodiment 1
As shown in figure 1, a kind of magnetic shoe molding die, including upper die head 1, lower die head 2, cavity plate 3 and for magnetizing, demagnetizing
Coil 4, encloses forming cavity between the upper die head 1, lower die head 2 and cavity plate 3, the coil 4 is located at the outside of die cavity, it is described under
The upper end of die head 2 has every magnetosphere 5, and the upper surface every magnetosphere 5 is the arc surface projected upwards, described every under magnetosphere 5
Surface includes plane 501 and two inclined-planes 502 positioned at the two ends of plane 501, and two inclined-planes 502 are symmetrical, the inclined-plane 502
It is inclined upwardly by outer to interior, the inclined-plane 502 and the angle of plane 501 are α, wherein, α span is 60 ° -70 °.
The material every magnetosphere 5 is 7Mn15Cr2Al3V2WMo (nonmagnetic steel) or 1Cr18Ni9Ti (stainless steel).
Above-mentioned magnetic shoe molding die is as follows using process：
Magnetic material (magnetic slurry) is put into die cavity, coil 4 is powered and magnetized, while hydraulic press applies pressure, passed through
Magnetic material extrusion forming in die cavity is passed through reverse current so that the magnetic shoe 6 in die cavity demagnetizes by upper die head 1 in coil 4,
Wherein it is arranged to arc surface every the upper surface of magnetosphere 5, lower surface is arranged to plane 501 and two inclined-planes 502 so that every magnetosphere 5
One section of magnetic resistance where mid-plane 501 is larger, and one section of magnetic resistance is relatively low where inclined-plane 502, due to the magnetic field inside coil 4 by
Gradually die down from inside to outside, the middle part magnetic induction line inside coil 4 is most close, the edge magnetic induction line inside coil 4 is relatively sparse, magnetic
Watts 6 middle part is located at the magnetic induction line of coil 4 most close position, correspondence this section set it is thicker every magnetosphere 5, magnetic resistance compared with
Greatly, the both sides position of magnetic shoe 6 is located at the magnetic induction line gradually sparse position of coil 4, and correspondence is gradually thinning every magnetosphere 5, and magnetic resistance is gradually
Diminish, so as to realize that the intrados magnetic material of whole magnetic shoe 6 is evenly distributed, the density of intrados keeps preferable uniformity,
Ftractureed so as to avoid magnetic shoe 6 from shrinking.
Above-mentioned is enlightenment according to desirable embodiment of the present utility model, passes through above-mentioned description, relevant staff
Various changes and amendments can be carried out in the range of without departing from this utility model technological thought completely.This practicality
New technical scope is not limited to the content on specification, it is necessary to determine that its is technical according to right
Scope.
Claims (2)
1. a kind of magnetic shoe molding die, including upper die head (1), lower die head (2), cavity plate (3) and the coil for magnetizing, demagnetizing
(4) forming cavity, is enclosed between the upper die head (1), lower die head (2) and cavity plate (3), the coil (4) is located at the outside of die cavity,
It is characterized in that：The upper end of the lower die head (2) has every magnetosphere (5), and the upper surface every magnetosphere (5) is projected upwards
Arc surface, the lower surface every magnetosphere (5) includes plane (501) and two inclined-planes (502) positioned at plane (501) two ends,
Symmetrically, the inclined-plane (502) is inclined upwardly two inclined-planes (502) by outer to interior, the inclined-plane (502) and plane
(501) angle is α, wherein, α span is 60 ° -70 °.
2. magnetic shoe molding die according to claim 1, it is characterised in that：The material every magnetosphere (5) is
7Mn15Cr2Al3V2WMo or 1Cr18Ni9Ti.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621493874.6U CN206356580U (en) | 2016-12-30 | 2016-12-30 | Magnetic shoe molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621493874.6U CN206356580U (en) | 2016-12-30 | 2016-12-30 | Magnetic shoe molding die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206356580U true CN206356580U (en) | 2017-07-28 |
Family
ID=59379367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621493874.6U Expired - Fee Related CN206356580U (en) | 2016-12-30 | 2016-12-30 | Magnetic shoe molding die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206356580U (en) |
-
2016
- 2016-12-30 CN CN201621493874.6U patent/CN206356580U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170728 Termination date: 20201230 |