CN1868631A - Hydranlic external pressure shaping method and device for fusible internal mould pipe kind parts - Google Patents
Hydranlic external pressure shaping method and device for fusible internal mould pipe kind parts Download PDFInfo
- Publication number
- CN1868631A CN1868631A CNA2005100465118A CN200510046511A CN1868631A CN 1868631 A CN1868631 A CN 1868631A CN A2005100465118 A CNA2005100465118 A CN A2005100465118A CN 200510046511 A CN200510046511 A CN 200510046511A CN 1868631 A CN1868631 A CN 1868631A
- Authority
- CN
- China
- Prior art keywords
- fusible
- mold
- inner mold
- external pressure
- pipe
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000007493 shaping process Methods 0.000 title claims description 28
- 239000012530 fluid Substances 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 2
- 238000009834 vaporization Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000006052 feed supplement Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- IXSZQYVWNJNRAL-UHFFFAOYSA-N etoxazole Chemical compound CCOC1=CC(C(C)(C)C)=CC=C1C1N=C(C=2C(=CC=CC=2F)F)OC1 IXSZQYVWNJNRAL-UHFFFAOYSA-N 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
An externally hydraulic forming method with fusible internal mould for manufacturing the tubular part with complex shape includes such steps as preparing a fusible internal mould, putting the raw material of said tubular part on the surface of said internal mould, pressurizing in the sealed hydraulic chamber to a predefined value to form a tubular part, and heating to fuse the internal mould.
Description
Technical field
The present invention relates to a kind of fusible internal mold pipe type component fluid power external pressure shaping method and device, be mainly used in complicated pipe type element hydroforming field.
Background technology
It is to utilize fluid pressure to make a kind of plastic working technique of component shaping that fluid power is shaped.Forming high pressure in pipe is to make metal pipe material inside bear high-pressure fluid, causes tubing bulging distortion laterally, to obtain the process of required form.High-pressure fluid makes water or hydraulic oil usually, also adopts gas, low-melting-point metal, powder, sticky polymers or the like on this external some specific use.
Internal high pressure forming be a kind of be transmission medium with liquid, utilize inner high voltage (the common 100～400MPa of operating pressure is up to 1000MPa) to make the metal pipe be deformed into modern Technology of Plastic Processing into the complicated shape part, belong to the category that fluid power is shaped.Internal high pressure forming principle and technical process: the internal high pressure forming principle is by internal pressurization and axial afterburning feed supplement pipe to be pressed into mold cavity to make its shaping.Basic craft course is, at first pipe put into counterdie, and closed patrix is full of liquid then in pipe, and begins pressurization, and the drift of pipe end is by with the certain inside feeding of matching relationship of interior pressure pipe being shaped in pressurization.
Internal high pressure forming shortcoming: become when being pressed into shape in the section pipe type element height for complicated shape, outer mold is subjected to action of pulling stress, processing parts easily produces and breaks, and internal pressure is very big, need very big mold clamping force, for the asymmetrical pipe type element of complicated shape, external mold processing is difficulty relatively in addition, and cost is very high.
In view of the internal high pressure forming shortcoming, fluid power external pressure shaping technology and method have been invented.
The fluid power external pressure shaping is a kind of new method of making complicated pipe part.The fluid power external pressure shaping is to adopt liquid medium to apply hydraulic coupling in pipe material outside, the blank section is changed and be formed on the core that places pipe inside, so the inner surface configuration of drip molding is consistent with the external surface shape of core.The advantage of external pressure shaping technology is: at first, workpiece inner surface size and dimension is accurate, can satisfy the special requirement of dimensional accuracy; Secondly, utilize tubing to be shaped under external pressure, reduced forming pressure; Once more, pipe is subjected to the three-dimensional compressive stress effect during external pressure shaping, and material plasticity is improved, and is difficult for producing wall thickness reduction or breaking; In addition, axially feed supplement supply automatically.
The pipe diameter is the largest outer diameter of part during the fluid power external pressure shaping, uses the external pressure shaping technology and can avoid the wall thickness reduction problem effectively, is particularly useful for the elongated pipe type element of section variation complexity.But when adopting the fluid power external pressure shaping, part shape depends on the shape of internal mold, and for the pipe part of complicated shape, its internal mold shape is complicated and can't the demoulding, even adopt the metal-cored mould of baroque combination can the demoulding, but part of every processing just needs combined inner mold of assembly and disassembly, and efficient is very low, make up the complex structure of metal-cored mould simultaneously, be unfavorable for actual production.
Summary of the invention
The objective of the invention is the shortcoming that exists at existing fluid power external pressure shaping and a kind of complicated shape pipe type element fusible internal mold fluid power external pressure shaping method and the device that proposes, the problem of inner mold demoulding difficulty when having solved the fluid power external pressure, the present invention is simple in structure, easy to operate, forming effect is good, economical with materials, be a kind of new tubing parts fluid power external pressure shaping method and device, the manufacturing process that is suitable for the complicated shape pipe type element can solve the deficiency that has pipe type element internal high pressure forming technology now.
Technical scheme of the present invention is:
A kind of fusible internal mold pipe type component fluid power external pressure shaping method is characterized in that adopting fluid power external pressure shaping processes tubing parts, and the concrete operations step is as follows:
(1) processes fusible inner mold with part same size and shape earlier;
(2) the pipe material is placed on the suitable fusible inner mold outer surface of size, fixedly seal at two ends;
(3) then pipe material and fusible inner mold are put into the outer mold that can pressurize together, and sealing;
(4) hydraulic pressure chamber to sealing is pressurized to predetermined value, and pipe type element is shaped fully;
(5) workpiece is taken out in release;
(6) workpiece end is cut away, be heated to the melting temperature of fusible inner mold, make the internal mold fusing.
This device comprises fusible inner mold, hydraulic pressure chamber, outer mold, fusible inner mold and outer mold be coaxial, inside and outside structure is set, mounting pipe blank between fusible inner mold and the outer mold, fusible inner mold outside shaped region is provided with hydraulic pressure chamber.
Described fusible inner mold fusing point is 50-500 degree centigrade.
Described fusible inner mold material at normal temperatures or below 50 degrees centigrade for satisfying the solid of forming requirements, be heated to 50-500 degree centigrade and be molten into liquid, fluid, volatilization or vaporization.
Described fusible inner mold material is one of resin, silica gel, low-melting-point metal lead, tin.
Advantage of the present invention:
(1) formed thereby parts of the present invention do not need two ends or multiterminal axial feed, and the shaping frock is simple, and equipment cost is low.
(2) the present invention has improved material forming because stress state is a three-dimensional compressive stress.
(3) the present invention does not need to control the tube wall attenuate, and general generation thickens distortion on a small quantity.
(4) the present invention adopts the outside to apply hydraulic pressure, utilizes the distortion of external pressure unstability principle control parts, can reduce forming pressure, and booster and hydraulic system require low.
(5) outer mold of the present invention plays liquid storage pressurize effect as the hydraulic pressure die cavity, so external model cavity configuration and simple shape, handling ease.
(6) parts of the present invention are by inner mold shape decision, and inner mold can be by processes manufacturings such as casting, injection mouldings, can be in enormous quantities, high accuracy, and the pipe type element of processing does not need machining.
(7) inner mold material selection fusible material of the present invention and reusable, die cost is low, easy to manufacture.
(8) the present invention is because internal mold adopts casting or injection moulding process to shape, and shape can be very complicated; For the complicated shape pipe type element, if adopt common rigid metal combined type internal mold, then assembling is complicated, and the installation and removal time is long, and efficient is low.And if adopt fusible internal mold, the shape of pipe type element can be any complicated shape, and be easy to remove internal mold.
Description of drawings
Fig. 1-2 is an apparatus structure schematic diagram of the present invention; Wherein, Fig. 2 is an A-A cutaway view among Fig. 1.
Among Fig. 1,1 sealing ring; 2 pipe material; 3 fusible inner molds; 4 workpieces; 5 hydraulic pressure chambers; 6 outer molds; The P pressure direction.
The specific embodiment
Below in conjunction with embodiment technical scheme of the present invention is described further.
The fusing point that utilizes fusible material is lower than the character of metal material and the fusible internal mold external force hydroforming that realizes, and the building mortion structure is seen shown in Fig. 1-2.This device comprises sealing ring 1, pipe material 2, fusible inner mold 3, workpiece 4, hydraulic pressure chamber 5, outer mold 6, fusible inner mold 3 and outer mold 6 for coaxial, inside and outside structure is set, mounting pipe blank 2 between fusible inner mold 3 and the outer mold 6, fusible inner mold 3 outside shaped regions are provided with hydraulic pressure chamber 5, and fusible inner mold 3 and junction, outer mold 6 two ends are provided with sealing ring 1.
The invention process environment and need condition of work:
Manufacturing process provides clamping pressure by equipment such as hydraulic presses, outer mold 6 is as the hydraulic pressure die cavity, pipe material 2 is in fusible inner mold 3 fixedly is placed on outer mold 6 die cavities, outside hydraulic means injects liquid medium and produces fluid pressure to hydraulic pressure chamber 5 in forming process, plastic yielding takes place in pipe material 2 under the fluid pressure effect, be fitted at last on the inner mold surface and be configured as the parts of definite shape, promptly workpiece 4.
The present invention can not have external equipment yet provides mold clamping force, and by mould itself locking or do not need outside mold clamping force, for example outer mold is closed; Liquid power transmission medium can be water or oil or other fluid; Fusible inner mold 3 at room temperature is rigid solid, obtains behind the heat temperature and is elevated to a certain temperature range (50-500 degree centigrade) and then is melted into liquid or fluid even volatilization and is gaseous state and disappears.Therefore, can heat inner mold after the shaping and internal mold is melted or disappear, fusible inner mold material can be resin, silica gel, low-melting-point metal as plumbous, tin, fusing point is 50-500 degree centigrade, generally has reusable character.Fusible inner mold material (perhaps below 50 degrees centigrade) at normal temperatures is a solid, and good rigidly, hardness height, can satisfy the shape need of drip molding, is difficult for taking place elasticity and plastic deformation.
Concrete operations step of the present invention is described below:
(1) processes fusible inner mold 3 with part same size and shape earlier;
(2) pipe material 2 is placed on suitable fusible inner mold 3 outer surfaces of size, fixedly seal at two ends;
(3) then pipe material 2 and fusible inner mold 3 are put into the type cavity mould that has a constant volume and can pressurize together, promptly in the hydraulic pressure chamber 5;
(4) hydraulic pressure chamber to sealing is pressurized to predetermined value, and pipe type element is shaped fully;
(5) workpiece 4 is taken out in release;
(6) workpiece 4 ends are cut away, be heated to the melting temperature of fusible inner mold 3, the internal mold fusing;
(7) workpiece is cleaned, dry.
As shown in table 1, be the application example that adopts fusible internal mold pipe part fluid power external pressure shaping method and device.(material stainless steel 1Cr18Ni9Ti).
Table 1 application example
| Pipe material size external diameter/mm | Pipe material size internal diameter/mm | Pipe material wall thickness/mm | Shaping rear tubular member external diameter/mm |
| 50 | 48 | 1 | 45 |
| 80 | 78 | 1 | 74 |
| 100 | 98 | 1 | 95 |
Claims (5)
1, a kind of fusible internal mold pipe type component fluid power external pressure shaping method is characterized in that adopting fluid power external pressure shaping processes tubing parts, and the concrete operations step is as follows:
(1) processes fusible inner mold (3) with part same size and shape earlier;
(2) pipe material (2) is placed on suitable fusible inner mold (3) outer surface of size, fixedly seal at two ends;
(3) then pipe material (2) and fusible inner mold (3) are put into the outer mold (6) that can pressurize together, and sealing;
(4) hydraulic pressure chamber (5) to sealing is pressurized to predetermined value, and pipe type element is shaped fully;
(5) workpiece (4) is taken out in release;
(6) workpiece (4) end is cut away, be heated to the melting temperature of fusible inner mold (3), make the internal mold fusing.
2, a kind of fusible internal mold pipe part fluid power external pressure shaping device, it is characterized in that: this device comprises fusible inner mold (3), hydraulic pressure chamber (5), outer mold (6), fusible inner mold (3) and outer mold (6) for coaxial, inside and outside structure is set, mounting pipe blank (2) between fusible inner mold (3) and the outer mold (6), fusible inner mold (3) outside shaped region is provided with hydraulic pressure chamber (5).
3, according to the described fusible internal mold pipe part fluid power external pressure shaping device of claim 2, it is characterized in that: described fusible inner mold (3) fusing point is 50-500 degree centigrade.
4, according to the described fusible internal mold pipe part fluid power external pressure shaping device of claim 2, it is characterized in that: described fusible inner mold material at normal temperatures or below 50 degrees centigrade for satisfying the solid of forming requirements, be heated to 50-500 degree centigrade and be molten into liquid, fluid, volatilization or vaporization.
5, according to the described fusible internal mold pipe part fluid power external pressure shaping device of claim 2, it is characterized in that: described fusible inner mold (3) material is one of resin, silica gel, low-melting-point metal lead, tin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100465118A CN1868631A (en) | 2005-05-25 | 2005-05-25 | Hydranlic external pressure shaping method and device for fusible internal mould pipe kind parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100465118A CN1868631A (en) | 2005-05-25 | 2005-05-25 | Hydranlic external pressure shaping method and device for fusible internal mould pipe kind parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1868631A true CN1868631A (en) | 2006-11-29 |
Family
ID=37442488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100465118A Pending CN1868631A (en) | 2005-05-25 | 2005-05-25 | Hydranlic external pressure shaping method and device for fusible internal mould pipe kind parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1868631A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464563A (en) * | 2013-09-13 | 2013-12-25 | 佛山市康思达液压机械有限公司 | External high-pressure liquid-filling forming device for pipe |
| CN104226777A (en) * | 2014-10-14 | 2014-12-24 | 哈尔滨工业大学 | Viscous medium external pressing forming method for large-curvature thin-wall component |
| CN104998950A (en) * | 2014-04-24 | 2015-10-28 | 中国科学院金属研究所 | Hydraulic forming method for improving forming property of closed rotation empty body type parts |
| CN105537363A (en) * | 2015-12-15 | 2016-05-04 | 南京航空航天大学 | Molding device and method for heat expansion of aluminum alloy hollow part |
| CN108297392A (en) * | 2018-01-24 | 2018-07-20 | 南京理工大学 | A kind of external pressurized device for manufacturing bilayer sleeve |
| CN108372225A (en) * | 2018-01-04 | 2018-08-07 | 沈阳化工大学 | A kind of process of helical stator negative camber substep high pressure mold filling bulging |
| CN113020394A (en) * | 2021-03-04 | 2021-06-25 | 北京航空航天大学 | Method and device for forming tubular part |
| KR102591600B1 (en) * | 2023-05-15 | 2023-10-19 | 주식회사 이노비 | Apparatus for forming groove of roller for conveyors |
-
2005
- 2005-05-25 CN CNA2005100465118A patent/CN1868631A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464563A (en) * | 2013-09-13 | 2013-12-25 | 佛山市康思达液压机械有限公司 | External high-pressure liquid-filling forming device for pipe |
| CN103464563B (en) * | 2013-09-13 | 2016-04-27 | 佛山市康思达液压机械有限公司 | The outer high-pressure liquid-filling building mortion of a kind of tubing |
| CN104998950A (en) * | 2014-04-24 | 2015-10-28 | 中国科学院金属研究所 | Hydraulic forming method for improving forming property of closed rotation empty body type parts |
| CN104226777A (en) * | 2014-10-14 | 2014-12-24 | 哈尔滨工业大学 | Viscous medium external pressing forming method for large-curvature thin-wall component |
| CN104226777B (en) * | 2014-10-14 | 2016-06-22 | 哈尔滨工业大学 | A kind of deep camber thin-wall member resisting medium external pressure shaping method |
| CN105537363A (en) * | 2015-12-15 | 2016-05-04 | 南京航空航天大学 | Molding device and method for heat expansion of aluminum alloy hollow part |
| CN108372225A (en) * | 2018-01-04 | 2018-08-07 | 沈阳化工大学 | A kind of process of helical stator negative camber substep high pressure mold filling bulging |
| CN108297392A (en) * | 2018-01-24 | 2018-07-20 | 南京理工大学 | A kind of external pressurized device for manufacturing bilayer sleeve |
| CN108297392B (en) * | 2018-01-24 | 2019-10-18 | 南京理工大学 | It is a kind of for manufacturing the external pressurized device of bilayer sleeve |
| CN113020394A (en) * | 2021-03-04 | 2021-06-25 | 北京航空航天大学 | Method and device for forming tubular part |
| KR102591600B1 (en) * | 2023-05-15 | 2023-10-19 | 주식회사 이노비 | Apparatus for forming groove of roller for conveyors |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1868631A (en) | Hydranlic external pressure shaping method and device for fusible internal mould pipe kind parts | |
| CN201201008Y (en) | Internal fluid infusion pressure boost type hydraulic expanding device for pipe material | |
| CN103920795B (en) | A kind of heat expansion vibration combined forming process of solid particle of automobile rear axle housing | |
| CN101306448A (en) | Sheet metal rigid particles or compressible powder half-module shaping technique | |
| CN107350330A (en) | A kind of left-right asymmetry formula forming high pressure in pipe equipment | |
| KR101906088B1 (en) | Direct or indirect metal pipe extrusion process, mandrel for extruding metal pipes, metal pipe extruder and extruded metal pipe | |
| WO2009041433A1 (en) | Polytetrafluoroethylene bellows, process for manufacturing the same, apparatus therefor and fluid pressure feed equipment utilizing the bellows | |
| CN104209444A (en) | Oil pipe joint cold heading device and production technology thereof | |
| CN201684852U (en) | Radial pressure applying reducing die of flexible metal tube | |
| CN209775436U (en) | Vacuumizing rapid exhaust injection mold structure | |
| CN102554023A (en) | Pipe local reducing method | |
| CN2796883Y (en) | Hydraulic external pressing shaping device of meltable inner mould pipe kind parts | |
| CN103706660A (en) | Aluminum profile extruding die sleeve | |
| CN105058811A (en) | Hot-extruding and cold-pressing forming mold for building ash bin | |
| CN2858099Y (en) | High wave-peak thin-wall corrugated elasticity tube extrusion expanding shape machine | |
| CN208343339U (en) | A kind of injection mold for rapid shaping In-Ear Headphones ear muff | |
| CN107309320A (en) | A kind of left-right asymmetry formula threeway forming high pressure in pipe equipment | |
| CN207533815U (en) | A kind of high-precision bending and molding stamping die | |
| CN213890852U (en) | Mould capable of adjusting inner cavity shape | |
| CN205386912U (en) | Use synchronous board on mould | |
| CN205112256U (en) | Portable transfer mould of perpendicular die joint | |
| CN214684137U (en) | Precision forming die that car journal forging was used | |
| CN213137974U (en) | Local cooling water pipe of mould | |
| CN215095089U (en) | Acrylate rubber briquetting device | |
| CN216065481U (en) | Die-casting forming die capable of achieving rapid demoulding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |