CN103521587A - Hydraulic forming sealing structure and hydraulic forming die push head sealing structure - Google Patents
Hydraulic forming sealing structure and hydraulic forming die push head sealing structure Download PDFInfo
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- CN103521587A CN103521587A CN201310208096.6A CN201310208096A CN103521587A CN 103521587 A CN103521587 A CN 103521587A CN 201310208096 A CN201310208096 A CN 201310208096A CN 103521587 A CN103521587 A CN 103521587A
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- hair
- fillet
- hydraulic forming
- somebody
- cutting somebody
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Abstract
The invention aims at providing a hydraulic forming sealing structure and a hydraulic forming die push head sealing structure. The hydraulic forming die push head sealing structure comprises a fillet of the root of the conical surface of a push head, and the fillet is a section of arc when being seen from the longitudinal cross section of the push head.
Description
Technical field
The present invention relates to the hydraulic forming mold hermetically-sealed construction of cutting somebody's hair.
Background technology
Liquid-filling shaping method is that a kind of high-pressure forming liquid medium that utilizes makes blank according to the profile generation plastic deformation of design in advance, form the flexible die forming method of part, have forming limit, quality and precision high, advantages such as adopting special material, baroque part can be shaped.In actual production, the axial supplement of pipe liquid filled forming technology and sealing are by the realization of cutting somebody's hair.
In production, cut somebody's hair and be typically designed as taper or step sealing means.For cone seal mode, as shown in Figure 1, under responsive to axial force, the tapered end of cutting somebody's hair is along internal surface of bloom feeding.Meanwhile, cone-shaped end produces larger radial effect power, and make the to cut somebody's hair conical surface and internal surface of bloom push mutually, thereby produces sealing effect.Adopt this kind of mode to seal, the structure of cutting somebody's hair is comparatively simple.If but to produce reasonable sealing effectiveness, i.e. face contact sealing facilitates axial supplement simultaneously, need pipe to produce larger crimp, large distortion needs large axial force, and the control of axial force while being unfavorable for hydroforming also can bring certain damage to pipe with cutting somebody's hair.
For step sealing means, as shown in Figure 2, adopt classification sealing means.Cutting somebody's hair, conical surface bottom increases a step.Under responsive to axial force, cut somebody's hair and make the end face of pipe produce a little distortion, thereby realize sealing (Fig. 2).Adopt this kind of mode to seal, the structure of cutting somebody's hair is comparatively complicated, and precision prescribed is higher, and because step plane need be controlled in pipe wall thickness range, so be difficult to control for light wall pipe, sealing effectiveness is poor.
Summary of the invention
The object of the present invention is to provide hydroforming hermetically-sealed construction and the mould hermetically-sealed construction of cutting somebody's hair.
For realizing the hydraulic forming mold of the described object hermetically-sealed construction of cutting somebody's hair, be characterized in, comprise the fillet of the conical surface root of cutting somebody's hair, described fillet is seen as one section of circular arc from the longitudinal cross-section of cutting somebody's hair.
The described hydraulic forming mold hermetically-sealed construction of cutting somebody's hair, wherein, described circular arc is tangent with the conical surface of cutting somebody's hair.
The described hydraulic forming mold hermetically-sealed construction of cutting somebody's hair, wherein, described circular arc also with cut somebody's hair radially tangent.
The present invention also provides a kind of hydroforming hermetically-sealed construction, comprise that mould is cut somebody's hair and pipe, it is characterized in that, the root of the conical surface of cutting somebody's hair that mould is cut somebody's hair is fillet, described fillet is seen as one section of circular arc from the longitudinal cross-section of cutting somebody's hair, under responsive to axial force, described fillet first produces linear contact with described pipe inward flange, and then mould is cut somebody's hair and made the end face of pipe produce a distortion, so that described linear contact is transitioned into face contact gradually, thereby realize the stepless sealing of fillet.
Because the present invention can realize the stepless sealing of fillet, therefore really can effectively realize the axial seal of pipe liquid filled forming technology.
Accompanying drawing explanation
Fig. 1 is the cut somebody's hair schematic diagram of cone-shaped seal structure of mould.
Fig. 2 is the cut somebody's hair schematic diagram of step hermetically-sealed construction of mould.
Fig. 3 is the schematic diagram of the hydroforming hermetically-sealed construction in the embodiment of the present invention.
The specific embodiment
As shown in Figure 3, the cut somebody's hair root of 1 the conical surface 11 of mould is fillet 10, fillet 10 is one section of circular arc, under responsive to axial force to the right, fillet 10 first produces linear contact with pipe 2 inward flanges, then mould is cut somebody's hair and is made the end face of pipe 2 produce a distortion, so that described linear contact is transitioned into face contact (situation as shown in FIG., now pipe end face inner side forms circular arc 20) gradually, thereby realize the stepless sealing of fillet.
In previous embodiment, than the sealing means shown in Fig. 1, Fig. 2, the advantage of the stepless sealing means of fillet:
1. the distortion that this sealing means produces pipe end face is little, thereby the radial load producing is very little, can not cause damage to mold cavity;
2. this sealing means is to be contacted and be transitioned into gradually face and contact by linearity, so thin and thick pipe is had to good sealing effectiveness;
3. the sealing effectiveness that this sealing means reaches pipe end face generation distortion can bear higher internal pressure.
At present interior hydroforming is used more and more general on each fields such as automobile, Aero-Space, and pipe liquid filled shaping is an important component part of liquid-filling shaping technology.In pipe liquid filled shaping production technology, the coupling of internal pressure and tubing axial supplement is an important parameter, and the final mass of part is had to considerable influence.Adopt the stepless sealing means of fillet simple in structure, sealing effectiveness is good, can reduce the damage to mold cavity simultaneously, bears higher internal pressure, thereby improves finished part rate.
Claims (4)
1. the hydraulic forming mold hermetically-sealed construction of cutting somebody's hair, is characterized in that, comprise the fillet of the conical surface root of cutting somebody's hair, described fillet is seen as one section of circular arc from the longitudinal cross-section of cutting somebody's hair.
2. the hydraulic forming mold as claimed in claim 1 hermetically-sealed construction of cutting somebody's hair, is characterized in that, described circular arc is tangent with the conical surface of cutting somebody's hair.
3. the hydraulic forming mold as claimed in claim 2 hermetically-sealed construction of cutting somebody's hair, is characterized in that, described circular arc also with cut somebody's hair radially tangent.
4. hydroforming hermetically-sealed construction, comprise that mould is cut somebody's hair and pipe, it is characterized in that, the root of the conical surface of cutting somebody's hair that mould is cut somebody's hair is fillet, described fillet is seen as one section of circular arc from the longitudinal cross-section of cutting somebody's hair, under responsive to axial force, described fillet first produces linear contact with described pipe inward flange, and then mould is cut somebody's hair and made the end face of pipe produce a distortion, so that described linear contact is transitioned into face contact gradually, thereby realize the stepless sealing of fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310208096.6A CN103521587B (en) | 2013-05-29 | 2013-05-29 | Hydroforming hermetically-sealed construction and mould are cut somebody's hair hermetically-sealed construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310208096.6A CN103521587B (en) | 2013-05-29 | 2013-05-29 | Hydroforming hermetically-sealed construction and mould are cut somebody's hair hermetically-sealed construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103521587A true CN103521587A (en) | 2014-01-22 |
| CN103521587B CN103521587B (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310208096.6A Active CN103521587B (en) | 2013-05-29 | 2013-05-29 | Hydroforming hermetically-sealed construction and mould are cut somebody's hair hermetically-sealed construction |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003053441A (en) * | 2001-08-08 | 2003-02-26 | Kyoei Seisakusho:Kk | Bulging method for cylindrical body |
| DE10337398A1 (en) * | 2003-08-13 | 2005-03-17 | Forschungsgesellschaft Umformtechnik Mbh | Internal high pressure deformation device for pipes has a boring for finishing region of workpiece leaving gap filled with fluid |
| EP2319634A1 (en) * | 2008-07-04 | 2011-05-11 | Nippon Steel Corporation | Hydroforming equipment and hydroforming method |
| US20120047978A1 (en) * | 2010-06-15 | 2012-03-01 | Walter Neumann | Method of manufacturing a valve housing |
| CN202263818U (en) * | 2011-09-05 | 2012-06-06 | 沈阳黎明航空发动机(集团)有限责任公司 | Process equipment for high-pressure forming in turbine blade flow guide tube |
| CN102601206A (en) * | 2012-03-02 | 2012-07-25 | 张家港合瑞车桥有限公司 | Hydraulic bulging pipe end sealing device |
-
2013
- 2013-05-29 CN CN201310208096.6A patent/CN103521587B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003053441A (en) * | 2001-08-08 | 2003-02-26 | Kyoei Seisakusho:Kk | Bulging method for cylindrical body |
| DE10337398A1 (en) * | 2003-08-13 | 2005-03-17 | Forschungsgesellschaft Umformtechnik Mbh | Internal high pressure deformation device for pipes has a boring for finishing region of workpiece leaving gap filled with fluid |
| EP2319634A1 (en) * | 2008-07-04 | 2011-05-11 | Nippon Steel Corporation | Hydroforming equipment and hydroforming method |
| US20120047978A1 (en) * | 2010-06-15 | 2012-03-01 | Walter Neumann | Method of manufacturing a valve housing |
| CN202263818U (en) * | 2011-09-05 | 2012-06-06 | 沈阳黎明航空发动机(集团)有限责任公司 | Process equipment for high-pressure forming in turbine blade flow guide tube |
| CN102601206A (en) * | 2012-03-02 | 2012-07-25 | 张家港合瑞车桥有限公司 | Hydraulic bulging pipe end sealing device |
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| Publication number | Publication date |
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| CN103521587B (en) | 2016-02-10 |
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