CN104552572A - Coordination method for working surfaces of upper die and medium die of permanent magnetic ferrite tile die - Google Patents
Coordination method for working surfaces of upper die and medium die of permanent magnetic ferrite tile die Download PDFInfo
- Publication number
- CN104552572A CN104552572A CN201410830198.6A CN201410830198A CN104552572A CN 104552572 A CN104552572 A CN 104552572A CN 201410830198 A CN201410830198 A CN 201410830198A CN 104552572 A CN104552572 A CN 104552572A
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- CN
- China
- Prior art keywords
- patrix
- working face
- mould
- middle mould
- sagitta
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/26—Assemblies of separate moulds, i.e. of moulds or moulding space units, each forming a complete mould or moulding space unit independently from each other
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention discloses a coordination method for working surfaces of an upper die and a medium die of a permanent magnetic ferrite tile die. According to the coordination method, on the basis of a product green body drawing, the working surface of the medium die consists of a raised arc surface R, an arch rise H=H0-t, and a chord, namely a horizontal extension line L of the chard length of the medium die, corresponding to the arch rise H, wherein R and L are tangent to a transition circle r; the working surface of the upper die consists of a sunken arc surface R1, an arch rise H1=H0-t, and a chord, namely the horizontal extension line L1 of the chard length of the upper die, corresponding to the arch rise H1, wherein R1 and L1 are tangent to a transition circle r1; papery filter cloth which has the thickness t is placed between the working surface of the upper die and the working surface of the medium die; the top of the arc is equivalent to the distance between both sides of the arc. According to the coordination method, damages to the internal tissue structure of a green body and knife edge cracking in a pressure-relief demoulding process of the green body are avoided, and the quality of the green body is improved.
Description
Technical field
The present invention relates to permanent ferrite wet pressure magnetic tile Design of Dies technology, especially relate to the fitting method of a kind of permanent magnetic ferrite magnetic shoe mould patrix and middle mould working face.
Background technology
Permanent ferrite magnetic tile is curved, compressing with shaper, and therefore the working face of magnetic shoe mould patrix and middle mould is also designed to arc.The arc being generally patrix working face in depression, middle mould working face in protruding arc, patrix and middle mould with the use of.Because permanent ferrite magnetic tile is that wet pressing high-intensity magnetic field is shaping, slip has moisture, granularity is little (slip moisture about 35%, raw material particle size 0.8 ~ 1.1um) feature, pad is needed to add filter paper filter cloth etc. when mould is compressing between patrix and middle mould, the slip occurred in mould die mould is escaped, the problems such as base substrate overlap, crackle, mechanical strength, have direct relation with the quality of fit of patrix and middle mould working face.
It is determine middle mould radian and sagitta according to the outer arc of green compact that current known magnetic shoe mould patrix coordinates with the working face of middle mould; add thickness estimation patrix radian and the sagitta of filter paper filter cloth; this rough evaluation method cause upper mould and the middle mould working face goodness of fit difference and occur shaping time slip escape; and because of the goodness of fit improper; unbalance stress when causing the base substrate demoulding; base substrate internal stresses release gathers, and cracks (being commonly called as the edge of a knife to split) and base substrate bad mechanical strength etc. bad.
Summary of the invention
The present invention is directed to the deficiency of existing designing technique, there is provided the fitting method of a kind of permanent magnetic ferrite magnetic shoe mould patrix and middle mould working face, stress equalization, base substrate internal stress discharges gently, prevent the generation that injury and string wide edge of a knife of base substrate internal organizational structure are split, improve green body quality.
Technical scheme of the present invention is:
A fitting method for permanent magnetic ferrite magnetic shoe mould patrix and middle mould working face, includes following operating procedure: upper mould and middle mould working face coordinate first to determine based on green compact figure, if green compact outer arc R
0, the wide W of string, sagitta H
0, filter paper filter cloth thickness t, mould protruding radian R=R during the basis of green compact figure is first determined
0, sagitta H=H
0-t, with H=H
0string corresponding to-t: middle mould chord length horizontal extension line L, the tangent transition circle r of R and L, i.e. R=R
0, H=H
0mould working face during-t, L, r are formed; Patrix working face is designed on the basis of middle mould working face: the Parallel Symmetric line P doing middle mould arc top symmetrical center line with W/2
1, P
2m is met at respectively with middle mould chord length horizontal extension line L
1, M
2, get arc top M and M
1, M
2not 3 points on same straight line, determine patrix depression radian R
1, patrix sagitta H
1=H
0-t, R
1be H with sagitta
1corresponding string: patrix chord length horizontal extension line L
1tangent transition circle r
1, i.e. R
1, H
1=H
0-t, L
1, r
1form patrix working face, between patrix and middle mould working face, pad adds filter paper filter cloth thickness be t with the use of, patrix is suitable with arc both sides distance apart with middle mould working face arc top.
The protruding radian of described middle mould is designed to R=R
0, sagitta H=H
0-t, radian R and sagitta H=H
0string corresponding to-t: the outside both sides of middle mould chord length horizontal extension line L intersection point connect with the tangent transition circle of r=0.2 ~ 0.8mm, mould working face in composition, wherein radian R-portion is protruding cambered surface.
Described patrix working face is with the Parallel Symmetric line P of mould arc top symmetrical center line in W/2 work
1, P
2m is met at respectively with middle mould chord length horizontal extension line L
1, M
2, get middle mould symmetrical arc top M and M
1, M
23 points, cross M, M
1, M
23 determined circular arcs are as patrix depression cambered surface R
1, sagitta H
1=H
0-t, patrix cambered surface R
1with sagitta H=H
0string corresponding to-t: patrix chord length horizontal extension line L
1the outside both sides of intersection point are with r
1the tangent transition circle of=r+0.2 ~ 0.4mm connects, patrix depression radian R
1, sagitta H
1=H
0-t, tangent transition circle r
1, patrix chord length horizontal extension line L
1form patrix working face, wherein radian R
1part is the cambered surface of depression.
Patrix of the present invention and middle mould working face are by radian face, chord length horizontal extension face, cambered surface and chord length horizontal extension plane tangent with arc transition, during the filter paper filter cloth that patrix and middle mould working face pad add thickness as t, the both sides distance apart of arc top and arc is suitable, when mould molding base substrate, extrados both sides can produce the platform of likeness in form shoulder shape, when suppressing end pressure release, middle mould returns the demoulding, patrix cambered surface and shoulder shape platform protect base substrate extrados, stress equalization, base substrate internal stress discharges gently, prevent the generation that injury and string wide edge of a knife of base substrate internal organizational structure are split, improve green body quality.
Accompanying drawing explanation
Fig. 1 is the design diagram of permanent magnetic ferrite magnetic shoe mould patrix of the present invention and middle mould working face.
Fig. 2 patrix of the present invention and middle mould working face pad add schematic diagram during filter paper filter cloth.
A portion enlarged drawing in Fig. 3 Fig. 2 of the present invention.
Fig. 4 patrix working face of the present invention schematic diagram.
Mould working face schematic diagram in Fig. 5 the present invention.
Number in the figure: 1, patrix; 2, middle mould; 3, filter paper filter cloth.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described
Embodiment (see Fig. 1-Fig. 5)
A fitting method for permanent magnetic ferrite magnetic shoe mould patrix and middle mould working face, includes following operating procedure: upper mould and middle mould working face coordinate first to determine based on green compact figure, if green compact outer arc R
0, the wide W of string, sagitta H
0, filter paper filter cloth thickness t, mould protruding radian R=R during the basis of green compact figure is first determined
0, sagitta H=H
0-t, with H=H
0string corresponding to-t: middle mould chord length horizontal extension line L, the tangent transition circle r of R and L, i.e. R=R
0, H=H
0mould working face during-t, L, r are formed; Patrix working face is designed on the basis of middle mould working face: the Parallel Symmetric line P doing middle mould arc top symmetrical center line with W/2
1, P
2m is met at respectively with middle mould chord length horizontal extension line L
1, M
2, get arc top M and M
1, M
2not 3 points on same straight line, determine patrix depression radian R
1, patrix sagitta H
1=H
0-t, R
1be H with sagitta
1corresponding string: patrix chord length horizontal extension line L
1tangent transition circle r
1, i.e. R
1, H
1=H
0-t, L
1, r
1form patrix working face, between patrix and middle mould working face, pad adds filter paper filter cloth thickness be t with the use of, patrix is suitable with arc both sides distance apart with middle mould working face arc top.
The protruding radian of middle mould is designed to R=R
0, sagitta H=H
0-t, radian R and sagitta H=H
0string corresponding to-t: the outside both sides of middle mould chord length horizontal extension line L intersection point connect with the tangent transition circle of r=0.2 ~ 0.8mm, mould working face in composition, wherein radian R-portion is protruding cambered surface.Patrix working face is with the Parallel Symmetric line P of mould arc top symmetrical center line in W/2 work
1, P
2m is met at respectively with middle mould chord length horizontal extension line L
1, M
2, get middle mould symmetrical arc top M and M
1, M
23 points, cross M, M
1, M
23 determined circular arcs are as patrix depression cambered surface R
1, sagitta H
1=H
0-t, patrix cambered surface R
1with sagitta H=H
0string corresponding to-t: patrix chord length horizontal extension line L
1the outside both sides of intersection point are with r
1the tangent transition circle of=r+0.2 ~ 0.4mm connects, patrix depression radian R
1, sagitta H
1=H
0-t, tangent transition circle r
1, patrix chord length horizontal extension line L
1form patrix working face, wherein radian R
1part is the cambered surface of depression.
Patrix 1 and middle mould 2 working face are by radian face, chord length horizontal extension face, cambered surface and chord length horizontal extension plane tangent with arc transition, during the filter paper filter cloth that patrix and middle mould working face pad add thickness as t, the both sides distance apart of arc top and arc is suitable, when mould molding base substrate, extrados both sides can produce the platform of likeness in form shoulder shape, when suppressing end pressure release, middle mould returns the demoulding, patrix cambered surface and shoulder shape platform protect base substrate extrados, stress equalization, base substrate internal stress discharges gently, prevent the generation that injury and string wide edge of a knife of base substrate internal organizational structure are split, improve green body quality.
Claims (3)
1. a fitting method for permanent magnetic ferrite magnetic shoe mould patrix and middle mould working face, is characterized in that, includes following operating procedure: upper mould and middle mould working face coordinate first to determine based on green compact figure, if green compact outer arc R
0, the wide W of string, sagitta H
0, filter paper filter cloth thickness t, mould protruding radian R=R during the basis of green compact figure is first determined
0, sagitta H=H
0-t, with H=H
0string corresponding to-t: middle mould chord length horizontal extension line L, the tangent transition circle r of R and L, i.e. R=R
0, H=H
0mould working face during-t, L, r are formed; Patrix working face is designed on the basis of middle mould working face: the Parallel Symmetric line P doing middle mould arc top symmetrical center line with W/2
1, P
2m is met at respectively with middle mould chord length horizontal extension line L
1, M
2, get arc top M and M
1, M
2not 3 points on same straight line, determine patrix depression radian R
1, patrix sagitta H
1=H
0-t, R
1be H with sagitta
1corresponding string: patrix chord length horizontal extension line L
1tangent transition circle r
1, i.e. R
1, H
1=H
0-t, L
1, r
1form patrix working face, between patrix and middle mould working face, pad adds filter paper filter cloth thickness be t with the use of, patrix is suitable with arc both sides distance apart with middle mould working face arc top.
2. processing method according to claim 1, is characterized in that: the protruding radian of described middle mould is designed to R=R
0, sagitta H=H
0-t, radian R and sagitta H=H
0string corresponding to-t: the outside both sides of middle mould chord length horizontal extension line L intersection point connect with the tangent transition circle of r=0.2 ~ 0.8mm, mould working face in composition, wherein radian R-portion is protruding cambered surface.
3. processing method according to claim 1, is characterized in that: described patrix working face do with W/2 in the Parallel Symmetric line P of mould arc top symmetrical center line
1, P
2m is met at respectively with middle mould chord length horizontal extension line L
1, M
2, get middle mould symmetrical arc top M and M
1, M
23 points, cross M, M
1, M
23 determined circular arcs are as patrix depression cambered surface R
1, sagitta H
1=H
0-t, patrix cambered surface R
1with sagitta H=H
0string corresponding to-t: patrix chord length horizontal extension line L
1the outside both sides of intersection point are with r
1the tangent transition circle of=r+0.2 ~ 0.4mm connects, patrix depression radian R
1, sagitta H
1=H
0-t, tangent transition circle r
1, patrix chord length horizontal extension line L
1form patrix working face, wherein radian R
1part is the cambered surface of depression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830198.6A CN104552572B (en) | 2014-12-25 | 2014-12-25 | The fitting method of mould and middle mould working face on a kind of permanent magnetic ferrite magnetic shoe mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830198.6A CN104552572B (en) | 2014-12-25 | 2014-12-25 | The fitting method of mould and middle mould working face on a kind of permanent magnetic ferrite magnetic shoe mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104552572A true CN104552572A (en) | 2015-04-29 |
| CN104552572B CN104552572B (en) | 2017-06-27 |
Family
ID=53070162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410830198.6A Active CN104552572B (en) | 2014-12-25 | 2014-12-25 | The fitting method of mould and middle mould working face on a kind of permanent magnetic ferrite magnetic shoe mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104552572B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109624033A (en) * | 2018-12-28 | 2019-04-16 | 安徽龙磁科技股份有限公司 | A kind of design method of concentric circle arc plane magnetic shoe mould |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05154812A (en) * | 1991-12-03 | 1993-06-22 | Kawasaki Steel Corp | Mold for wet type molding |
| CN200941337Y (en) * | 2005-10-26 | 2007-08-29 | 上海龙磁电子科技有限公司 | Upper mould of permanent-magnet ferrite tile wet pressure moulding die |
| CN201403032Y (en) * | 2009-05-06 | 2010-02-10 | 安徽龙磁科技股份有限公司 | Super-thick large chord high magnetic tile forming mold with down-rushing water pumping mechanism |
| CN102103925A (en) * | 2009-12-16 | 2011-06-22 | 广东江粉磁材股份有限公司 | Method and mold capable of controlling orientation of magnetic field in molding cavity |
| CN202185968U (en) * | 2011-07-30 | 2012-04-11 | 马鞍山市鑫洋永磁有限责任公司 | Magnetic shoe molding die with lower water holes |
| CN202943736U (en) * | 2012-12-07 | 2013-05-22 | 绵阳市东辰磁性材料有限公司 | Permanent magnetic ferrite wet-pressing tile-shaped magnet die |
| CN103707398A (en) * | 2013-11-26 | 2014-04-09 | 安徽金寨将军磁业有限公司 | Design method of automatic injection mold sprue of permanent magnetic ferrite tile |
| CN203888002U (en) * | 2014-06-23 | 2014-10-22 | 马鞍山市鑫洋永磁有限责任公司 | Die structure for improving motor magnetic tile center field |
-
2014
- 2014-12-25 CN CN201410830198.6A patent/CN104552572B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05154812A (en) * | 1991-12-03 | 1993-06-22 | Kawasaki Steel Corp | Mold for wet type molding |
| CN200941337Y (en) * | 2005-10-26 | 2007-08-29 | 上海龙磁电子科技有限公司 | Upper mould of permanent-magnet ferrite tile wet pressure moulding die |
| CN201403032Y (en) * | 2009-05-06 | 2010-02-10 | 安徽龙磁科技股份有限公司 | Super-thick large chord high magnetic tile forming mold with down-rushing water pumping mechanism |
| CN102103925A (en) * | 2009-12-16 | 2011-06-22 | 广东江粉磁材股份有限公司 | Method and mold capable of controlling orientation of magnetic field in molding cavity |
| CN202185968U (en) * | 2011-07-30 | 2012-04-11 | 马鞍山市鑫洋永磁有限责任公司 | Magnetic shoe molding die with lower water holes |
| CN202943736U (en) * | 2012-12-07 | 2013-05-22 | 绵阳市东辰磁性材料有限公司 | Permanent magnetic ferrite wet-pressing tile-shaped magnet die |
| CN103707398A (en) * | 2013-11-26 | 2014-04-09 | 安徽金寨将军磁业有限公司 | Design method of automatic injection mold sprue of permanent magnetic ferrite tile |
| CN203888002U (en) * | 2014-06-23 | 2014-10-22 | 马鞍山市鑫洋永磁有限责任公司 | Die structure for improving motor magnetic tile center field |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109624033A (en) * | 2018-12-28 | 2019-04-16 | 安徽龙磁科技股份有限公司 | A kind of design method of concentric circle arc plane magnetic shoe mould |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104552572B (en) | 2017-06-27 |
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