CN105013919A - Hydroforming device and method of spatial multi-feature hollow body component - Google Patents
Hydroforming device and method of spatial multi-feature hollow body component Download PDFInfo
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- CN105013919A CN105013919A CN201410168841.3A CN201410168841A CN105013919A CN 105013919 A CN105013919 A CN 105013919A CN 201410168841 A CN201410168841 A CN 201410168841A CN 105013919 A CN105013919 A CN 105013919A
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Abstract
The invention discloses a hydroforming device and method of a spatial multi-feature hollow body component, and belongs to the field of hydroforming of irregular-section hollow body components. The hydroforming device is a partitioning type combined hydroforming mould and comprises an upper mould body, a lower mould body and a mould core. After the upper mould body, the lower mould body and the mould core match, a cavity of the mould is formed in the hydroforming device. The height H of a mould core cavity in the mould is (1.1-1.2)h. When the spatial multi-feature hollow body component is formed through the device, firstly, an initial blank is arranged in the cavity of the mould, and the cavity is sealed; then, high-pressure media are guided into the sealed cavity in the mould, and the hollow body component with the even wall thickness is formed through the pressure of the high-pressure media; and the mould is opened, and the mould core is taken out in the axial direction of the stretching feature portion of the hollow body component in the process of taking out parts. The hydroforming device is simple, low in equipment cost, easy and convenient to control, excellent in forming quality and low in requirement for application environments.
Description
Technical field
The present invention relates to the empty body component hydroforming field of profiled-cross-section, be specifically related to hydroforming equipment and the method for the empty body component of a kind of space multiple features.
Background technology
The Precision Forming Technology of the empty body component of complex section is the Parts manufacturing technology of saving material most, be conducive to the lightweight of equipment, nothing left quantification, high accuracy and integration development, at present, automobile, high ferro and Aero-Space career development propose more and more stronger demand to the member integrated of high structure efficiency, lightweight, hollow thin-wall and precision manufacturing technology.Wherein have and connect the empty body component of commutation function, as thin-walled four-way pipe, to turn round the application in engineering such as hollow porous very general.The process that traditional handicraft produces four-way part is: first bent plate makes main pipe, then punches on the pipe be shaped, then is connected with branch road by pipe by the method for welding.Conventional process is more, use the equipment such as bending roll machine, cutting machine, and labour intensity is large, and in production process, use welding procedure, the joint area quality and performance of four-way pipe cannot be effectively guaranteed, and production cost is higher.And for thin-wall construction part, exist and bend a series of technical barriers such as difficult, welding difficulty is large.
And Hydroforming is as the advanced Technology of Plastic Processing of modern times topmost lightweight, it is the core technology preparing the empty body component of profiled-cross-section, may be used for the preparation of automobile, aviation and space industry Typical Components, overall structure weight can be made significantly to be reduced, and improve the strength and stiffness of parts, reduce part and number of molds, reduce production cost.In addition hydroforming belongs to the category that flexible media is shaped, and has small round corner size parts can obtain good effect to shaping.But conventional hydraulic forming technique is for the parts of architectural feature in same plane, finally can obtain good quality by the Proper Match of feeding feed supplement and interior pressure and dimensional accuracy high product.And for having the part of three dimensions multiple features structure, namely design of part feature is not in same plane, adopt conventional hydraulic forming technology, sometimes existing cannot feed supplement in time, and causing the thinning cracking of local excessive and be shaped part afterwards cannot the key technical problem such as demoulding taking-up.
Summary of the invention
For solving the difficult problem that prior art exists when preparing and having three dimensions multiple features constitutional detail, the object of the present invention is to provide hydroforming equipment and the method for the empty body component of a kind of space multiple features.Its building mortion is simple and easy, equipment cost is cheap, it is easy to control, forming quality is excellent and to application environmental requirement low.
Technical scheme of the present invention is:
The hydroforming equipment of the empty body component of a kind of space multiple features, this device is sectional type assembled hydraulic shaping dies, comprise upper die and lower die and core rod, its interior die cavity (die cavity of mould and the shape of empty body component adapt) forming mould after described upper die and lower die and core rod closely cooperate; Comprise the die cavity of the characteristic of sky body component in the die cavity of described mould, i.e. core rod die cavity, the core rod die cavity height H in described mould=(1.1 ~ 1.2) h, h is the height of sky body component specification part.Such design is that characteristic deforming tops is excessive to be caused excessive thinning and break in order to prevent, during shaping, blank upper end can elder generation and core contact, is subject to the effect of contraction of mold cores, improves the uniformity of shaping wall thickness, and make blank be in three-dimensional compressive stress state, improve the forming property of material.
Multiple features empty body component in described space refers to empty body component three-dimensional all having and stretches out feature, and described empty body component comprises tubing, housing and plate parts.According to actual conditions, the core rod die cavity of requirement is located at the inner side of described core rod, place, the maximum cross-section plane of described empty body component is set to the die joint of mould (die joint of mould refers to the interface between upper die and lower die).
When multiple features empty body component in described space is plate parts, described sectional type assembled hydraulic shaping dies also can only include counterdie and core rod, its interior die cavity forming mould after counterdie and core rod closely cooperate.
Utilize said apparatus to carry out the hydraulic forming method of the empty body component of space multiple features, comprise the steps:
(1) die cavity is sealed in die cavity initial blank being loaded mould;
(2) high-pressure medium is imported in the die cavity sealed in mould, rely on the pressure forming of high-pressure medium to go out the empty body component of uniform wall thickness;
(3) opening mold, takes out shaping empty body component; In this process, core rod need take out along the axial direction of empty its characteristic of body component.
In above-mentioned hydroforming process, keyway can be outputed on the patrix of mould or counterdie, placement positioning key in keyway, by the motion of the cooperation restriction core rod of positioning key and core rod.
Different according to the kind of space multiple features part, the forming process of all kinds of part is specific as follows:
During the multiple features part hydroforming of straight tube space-like, pipe is put into counterdie, upper and lower mould closes, and pipe two-port is sealed by horizontal movement by left side drift and right side drift, forms the mold cavity of sealing; Afterwards high-pressure medium liquid is imported in the mold cavity of sealing, rely on the pressure forming of high-pressure medium to go out the part of uniform wall thickness.During molding, first mention patrix, then extract core rod along the axis direction of characteristic on straight tube, then take out part.
During the multiple features part hydroforming of revolving body tubing space, blank is put into counterdie die cavity, the die cavity relying on mould to be formed realizes self seal; Afterwards, high-pressure medium is imported in the mold cavity of sealing, rely on the pressure forming of high-pressure medium to go out the empty body component of satisfactory revolving body multiple features.During molding, need first to take out core rod along the axis direction of characteristic on part, then open mould, take out formation of parts.
During the multiple features part hydroforming of plate space-like, initial slab is put on counterdie, upper padding plate is depressed, contacts with slab and seal; Afterwards high-pressure medium liquid is imported in the mold cavity of sealing, rely on the pressure forming of high-pressure medium to go out the component of uniform wall thickness.When taking out part, first to take out core rod along the axis direction of characteristic.Then open upper padding plate, take out part.
During the part hydroforming of enclosed housing space multiple features, initial plate is welded into starting shell, puts on counterdie, core rod is put into patrix, and patrix pressure forms sealing die cavity, then passes into highly pressurised liquid and to be shaped qualified bulb, take out core rod, open patrix, take out part.
Beneficial effect of the present invention is as follows:
1, the present invention can realize the preparation processing with the empty body component of three-D space structure feature that conventional hydraulic forming technology is difficult to produce, as thin-walled multi-way pipe fitting, and italic revolution multiple features component etc.
2, the present invention is designed by the sectional type of hydraulic forming mold and core rod, the demoulding and the taking-up with three-D space structure characteristic part can be realized, and can for the concrete architectural feature of part, design the taking-up order of different moulds and core rod, save number of molds and operation, enhance productivity.
3, the present invention is by the control to core rod size, can alleviate the excessive thinning of pipe wall thickness, improves and pastes mould ability and Thickness Distribution uniformity, thus improves the forming quality of part.
Accompanying drawing illustrates:
Fig. 1 is the straight axis tubing space multiple features part schematic three dimensional views of embodiment 1.
Fig. 2 is the straight axis tubing space multiple features part axial two-dimensional representation of embodiment 1.
Fig. 3 is A-A cross sectional representation in Fig. 2.
Fig. 4 is the sheet material space multiple features part schematic three dimensional views of embodiment 2.
Fig. 5 is the cross sectional representation of embodiment 2 sheet material.
Fig. 6 is the revolving body tubing space multiple features part schematic three dimensional views of embodiment 3.
Fig. 7 is the cross sectional representation of embodiment 3 part.
In figure: 1-high pressure fuel source system; 2-patrix; 3-initial blank; 4-component; Drift on the right side of 5-; 6-counterdie; Drift on the left of 7-; 8-upper padding plate; 9-core rod; 10-lower bolster; 11-positioning key.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
Embodiment 1:
Fig. 1 is the present embodiment components three-dimensional schematic diagram, it is straight axis tubing space multiple features part, component comprises characteristic (on part outer surface ledge), from Fig. 2-3, patrix 2 and core rod 9 coordinate, form the core rod die cavity (die cavity corresponding to component specification part, a part for the die cavity of mould), then put into tubulose initial blank 3, upper and lower mould coordinates, form the die cavity of mould, upper padding plate 8 coordinates the vertical translation that can limit core rod 9 with patrix 2.Core rod die cavity height H in mould=(1.1 ~ 1.2) h (h is the height of End Product characteristics part), such design is to prevent deforming tops excessive, there is excessive thinning and break, during shaping, blank top can elder generation and contacting dies, be subject to the reaction force acts of mould, improve the uniformity of shaping wall thickness, and make blank be in three-dimensional compressive stress state, improve the forming property of material.Pipe initial blank 3 is put into die cavity, and initial pipe 3 two ends are sealed and feeding feed supplement by right side drift 5 and left side drift 7, then apply hydraulic pressure by high pressure fuel source system 1 to initial pipe 3 inside and carry out bulging, after bulging completes; Then shift out the drift 5 and 7 at initial pipe two ends, carry out release; Open the upper padding plate 8 of mould upstream, then directly mentioned by patrix 2, now core rod 9 will be fixed on the component 4 of shaping.Axis direction along characteristic takes out core rod 9, and then takes out the component 4 after processing.
Embodiment 2:
The present embodiment is space multiple features plate material parts, and its structure as shown in Figure 4.
Difference from Example 1 is:
Difference 1: whole forming process does not exist drift promotion blank and realizes feeding feed supplement.
Difference 2: sealing means is different.This example adopts upper padding plate 8 to push down blank 3 as shown in Figure 5, forms sealing die cavity.
Difference 3: the fixed form of core rod is different.By in Fig. 5 because multiple features portion size is less, therefore adopting circular core rod 9, in order to limit the own rotation of core rod, needing to output keyway on counterdie 6, placement positioning key in keyway, rotated by the cooperation restriction core rod 9 of positioning key 11 and core rod 9.
Difference 4: the molding order of mould is different.As shown in Figure 5, need first to open lower bolster 10, take out positioning key 11 and core rod 9, then take out component 4.
Embodiment 3:
The present embodiment is revolving body tubing space multiple features part, and its structure as shown in Figure 6.
Difference from Example 1 is:
Difference 1: whole forming process does not exist drift promotion blank and realizes feeding feed supplement.
Difference 2: the parting position of mould is different.As shown in Figure 7, this part belongs to the empty body component of italic multiple features, maximum cross-section need be adopted as die joint, adopt the smooth molding of notch cuttype die joint guarantee.
Difference 3: the fixed form of core rod is different.In order to limit the own rotation of core rod, patrix 2 outputing keyway, placement positioning key 11 in keyway, being rotated by the cooperation restriction core rod 9 of positioning key 11 and core rod 9.
Difference 4: the molding order of mould is different.As shown in Figure 7, need first to open upper padding plate 8, take out key 11 and core rod 9, then patrix 2 is opened in recurrence, could take out component 4.
Difference 5: the sealing means of mould.In the present embodiment, the near closed hollow ring formed by patrix 2 and counterdie 6, realizes self seal.
Difference 6: the injection mode of hydraulic oil.In the present embodiment, hydraulic oil injects highly pressurised liquid from core rod 9.
Claims (10)
1. a hydroforming equipment for the empty body component of space multiple features, is characterized in that: this device is sectional type assembled hydraulic shaping dies, comprises upper die and lower die and core rod, its interior die cavity forming mould after described upper die and lower die and core rod closely cooperate; Comprise the die cavity of the characteristic of sky body component in the die cavity of described mould, i.e. core rod die cavity, height H=(1.1 ~ 1.2) h, h of core rod die cavity is the height of the characteristic of sky body component.
2. the hydroforming equipment of the empty body component of space according to claim 1 multiple features, it is characterized in that: multiple features empty body component in described space refers to empty body component three-dimensional all having and stretches out feature, and described empty body component is tubing, Shell-Class and plate parts.
3. the hydroforming equipment of the empty body component of space according to claim 1 multiple features, it is characterized in that: the inner side according to actual conditions, the core rod die cavity of requirement being located at described core rod, place, the maximum cross-section plane of described empty body component is set to the die joint of mould.
4. the hydroforming equipment of the empty body component of space according to claim 2 multiple features, it is characterized in that: when multiple features empty body component in described space is plate parts, described sectional type assembled hydraulic shaping dies comprises counterdie and core rod, its interior die cavity forming mould after counterdie and core rod closely cooperate.
5. utilize device described in claim 1 to carry out a hydraulic forming method for the empty body component of space multiple features, it is characterized in that: the method comprises the steps:
(1) die cavity is sealed in die cavity initial blank being loaded mould;
(2) high-pressure medium is imported in the die cavity sealed in mould, rely on the pressure forming of high-pressure medium to go out the empty body component of uniform wall thickness;
(3) opening mold, takes out shaping empty body component; In this process, core rod need take out along the axial direction of empty its characteristic of body component.
6. the hydraulic forming method of the empty body component of space according to claim 5 multiple features, is characterized in that: the patrix of described mould or counterdie output keyway, placement positioning key in keyway, by the motion of the cooperation restriction core rod of positioning key and core rod.
7. the hydraulic forming method of the empty body component of space according to claim 5 multiple features, it is characterized in that: during the multiple features part hydroforming of straight tube space-like: first pipe is put into counterdie, after upper and lower mould is closed, pipe two-port is sealed by horizontal movement by left side drift and right side drift, forms the mold cavity of sealing; Then high-pressure medium liquid is imported in the mold cavity of sealing, rely on the pressure forming of high-pressure medium to go out the component of uniform wall thickness; During molding, first mention patrix, then extract core rod along the axis direction of characteristic on straight tube, then take out workpiece.
8. the hydraulic forming method of the empty body component of space according to claim 5 multiple features, it is characterized in that: during the multiple features part hydroforming of revolving body pipe-type space: first blank is put into counterdie die cavity, the die cavity relying on mould to be formed realizes self seal; Then, high-pressure medium is imported in the mold cavity of sealing, rely on the pressure forming of high-pressure medium to go out the empty body component of satisfactory revolving body multiple features; During molding, need first to take out core rod along the axis direction of characteristic on part, then open mould, take out part.
9. the hydraulic forming method of the empty body component of space according to claim 5 multiple features, it is characterized in that: during the multiple features part hydroforming of plate space-like: first sheet material blank is put on counterdie, upper padding plate is depressed, contact with initial blank and seal, its interior die cavity forming mould after counterdie and core rod closely cooperate, then high-pressure medium liquid is imported in the mold cavity of sealing, rely on the pressure forming of high-pressure medium to go out the part of uniform wall thickness; When taking out part, first to take out core rod along the axis direction of characteristic on part, then open upper padding plate, take out part.
10. the hydraulic forming method of the empty body component of space according to claim 5 multiple features, it is characterized in that: during the multiple features part hydroforming of closure casing space-like: first initial blank is welded into starting shell, put on counterdie, core rod is put into patrix, patrix pressure forms sealing die cavity, then passes into highly pressurised liquid and to be shaped qualified bulb, and the axis direction along characteristic on part takes out core rod, open mould, take out part.
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| CN201410168841.3A CN105013919B (en) | 2014-04-24 | 2014-04-24 | Hydroforming device and method of spatial multi-feature hollow body component |
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| CN201410168841.3A CN105013919B (en) | 2014-04-24 | 2014-04-24 | Hydroforming device and method of spatial multi-feature hollow body component |
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| CN105013919A true CN105013919A (en) | 2015-11-04 |
| CN105013919B CN105013919B (en) | 2017-02-15 |
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| CN109676002A (en) * | 2019-02-03 | 2019-04-26 | 哈尔滨工业大学 | A kind of closing variable cross-section thin-wall part viscous pressure forming device |
| CN111601670A (en) * | 2018-03-15 | 2020-08-28 | 宝马股份公司 | Mold for molding and method for manufacturing component |
| CN114309229A (en) * | 2021-12-27 | 2022-04-12 | 中国科学院金属研究所 | Forming-punching-flanging integrated impact hydraulic forming die and method |
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| CN114309229B (en) * | 2021-12-27 | 2022-12-02 | 中国科学院金属研究所 | Forming-punching-flanging integrated impact hydraulic forming die and method |
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