CN104209414A - Supplanting pad block type multi-point forming three-dimensional stretch bending mold and forming method - Google Patents

Supplanting pad block type multi-point forming three-dimensional stretch bending mold and forming method Download PDF

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Publication number
CN104209414A
CN104209414A CN201410418220.6A CN201410418220A CN104209414A CN 104209414 A CN104209414 A CN 104209414A CN 201410418220 A CN201410418220 A CN 201410418220A CN 104209414 A CN104209414 A CN 104209414A
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CN
China
Prior art keywords
forming
cushion block
mold
bar
supplementary
Prior art date
Application number
CN201410418220.6A
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Chinese (zh)
Inventor
宋相军
梁继才
李义
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长春市正通科技开发有限公司
Priority date (The priority date 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 date listed.)
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Application filed by 长春市正通科技开发有限公司 filed Critical 长春市正通科技开发有限公司
Priority to CN201410418220.6A priority Critical patent/CN104209414A/en
Publication of CN104209414A publication Critical patent/CN104209414A/en

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Abstract

The invention relates to a sectional material stretch bending and twisting forming mold and a dynamic forming process method, in particular to a supplanting pad block type multi-point forming three-dimensional stretch bending mold and a forming method, and belongs to the field of mechanical engineering. The mold and the method provided by the invention can be widely applied to the production of streamline-shaped structural elements of walking machinery, aerospace vehicles, artistic modeling engineering and the like. The method of the supplanting pad block type multi-point forming three-dimensional stretch bending mold is adopted by the invention. The mold comprises a plurality of supplementing pad blocks and mold templates, wherein the supplementing pad blocks are formed by forming grooves matched with one side, with the irregular cross section shape, of the sectional materials in a rectangular steel plate. The mold is used for the forming of edge collecting three-dimensional stretch bending and twisting of the sectional materials with the cross section approximately in T, F and E shapes and other shapes, and when the bending curvature center is positioned at one side of ribs, the ribs of the sectional materials can enter the corresponding three-dimensional grooves for three-dimensional stretch bending by using the supplementing pad blocks. The mold and the method provided by the invention have the advantages that the blank in the existing market is effectively filled, the structure is simple, the use is convenient, and the price is low.

Description

Supplement spacer-type multiple spot shaped three dimensional stretch bending mold and forming method
Technical field
The present invention relates to a kind of stretch bending, be twisted into mould and dynamic formation technology method.Belong to mechanical engineering field, can walking machine be widely used in, the production of the streamlined three-dimensional structure part of aerospace vehicle and design engineering etc.
Background technology
The walking machine equipment being representative with bullet train, EMUs and automobile has adopted the airflow design structure of the little good looking appearance of air drag mostly.In industrial production, because bending forming has, resilience is little, wrinkle resistant, production efficiency is high, the process of shaping general most employing bending forming of section bar.If (as bullet train headstock) uses external import parts in a lot of key project, its price is very expensive.Therefore, the three-dimensional bending forming part of section bar has had the market demand widely.Domestic two-dimentional stretch-bending molding process and equipment technology comparative maturity, three-dimensional bending technique and equipment technology have also started research and development and application.And the three-dimensional bending forming part of existing section bar refers to: the neutral axis of section bar is a three dimensions SPL, and the normal section shape and size of section bar are constant, and there is the product moulding part of torsional deflection in cross section around its neutral axis.Production is similar to " T ", " F ", " E " prismatic section bar for cross section, when bending curvature center is in rib side, traditional stretch bending mold is used to carry out three-dimensional bending, the rib of section bar cannot enter mould, therefore cannot forming part, main cause is that the rib of section bar cannot enter three-dimensional groove corresponding to mould.
Summary of the invention
The object of this invention is to provide a kind of supplementary spacer-type multiple spot shaped three dimensional stretch bending mold and forming method, for cross section be similar to " T ", " F ", " E " prismatic section bar receive limit three-dimensional bending, torsion shaping, overcome the above-mentioned shortcoming that existing stretch bending mold carries out three-dimensional bending existence.
Technical solution of the present invention accompanying drawings is as follows: this mould comprises several supplementary cushion block 1 and mould patterns 2, and wherein said supplementary cushion block 1 is in rectangular steel plates, offer the groove that coordinates with the irregular side of section bar cross sectional shape; The hold-down screw 5 that described mould pattern 2 comprises mold base 3, is arranged on the forming module 4 above mold base 3 and mould pattern 2 and stretch benders workbench are fixed; Described supplementary cushion block 1 and section bar constitute the solid section that be with two mutual vertical planes after fixing, and supplementary cushion block 1 is built into the shaping curved surface of multiple spot by mould pattern when 2 stretch bending, makes section bar according to this curved surface flexural deformation; In Wound Dies process, supplement the first shaping curved surface A on two orthogonal solid sections of cushion block and mould pattern and the second shaping curved surface B fit.
Described groove domestic demand polishing, edge rounding.
A forming method for supplementary spacer-type multiple spot shaped three dimensional stretch bending, it is characterized in that, step comprises:
(1) shape and the physical dimension of supplementary cushion block 1 is determined according to the cross sectional shape of section bar and the bending direction design of forming part; The length of foundation forming part and deformation extent determine the quantity of supplementary cushion block 1;
(2) two three-dimensionally shaped curved surfaces of suitable coefficient of resilience designing mould pattern 2 and first surface (A) and the second curved surface (B) is chosen according to the bending curvature of forming part and the physical dimension of supplementary cushion block 1;
(3) supplementing cushion block 1 by the fixed installation of certain spacing needs on forming area at section bar to be bent;
(4) send section bar to stretch benders together with supplementary cushion block 1 and carry out bending forming, two sides of supplementary cushion block 1 and the shaping curved face contact of mould pattern 2 should be ensured in stretch bending process.
The invention has the beneficial effects as follows: on producing, " T ", " F ", " E " prismatic section bar are similar to for cross section, when bending curvature center is in rib side, utilizing supplementary cushion block to make the rib of section bar enter three-dimensional groove corresponding to mould makes mould carry out three-dimensional bending, effectively fill up the blank on existing market, structure is simple, easy to use, cheap.
Accompanying drawing explanation
Fig. 1 is the working state figure of mould of the present invention when bending forming.
Fig. 2 is mould of the present invention is Fig. 1 C-C place sectional view during " E " shape section bar in stretch bending cross section.
Detailed description of the invention
Consult Fig. 1, a kind of supplementary spacer-type multiple spot shaped three dimensional stretch bending mold, this mould comprises several supplementary cushion block 1 and mould patterns 2, wherein supplement the section shape and size of cushion block 1 according to " E " section bar, offer reverse groove in the rectangular steel plates side of standard and reserve suitable fit clearance, the polishing of groove domestic demand, edge rounding.The quantity of supplementing cushion block 1 is as the criterion without obvious convex epirelief defect with the section bar after bending, and more the curved effect of Duola is better for quantity, but installation and removal workload is larger, affects production efficiency.Supplement the thickness of cushion block 1 enough and can stablize on mould section bar generation distortion is as the criterion with intensity.
Shown in Fig. 1 be one group and form this stretch bending mold by 40 supplementary cushion blocks and mould pattern, and when pair cross-section is the shape section bar of class " E ", section bar three-dimensional bending, twisting formation.
Consult Fig. 2, the hold-down screw 5 that described mould pattern 2 comprises mold base 3, is arranged on the forming module 4 above mold base 3 and mould pattern 2 and stretch benders workbench are fixed; Described supplementary cushion block 1 and section bar constitute the solid section that be with two mutual vertical planes after fixing, and supplementary cushion block 1 is built into the shaping curved surface of multiple spot by mould pattern when 2 stretch bending, makes section bar according to this curved surface flexural deformation; In Wound Dies process, supplement the first shaping curved surface A on two orthogonal solid sections of cushion block and mould pattern 2 and the second shaping curved surface B fit.On mould pattern 2 first shaping curved surface A and the second shaping curved surface B is built by technologist according to the shaping curve form of forming part and the physical dimension of supplementary cushion block and resilience parameter.Supplement cushion block 1 when the basic norm of the first shaping curved surface and the second shaping curved surface that build mould pattern 2 is and ensures bending forming and can be built into stable multipoint forming die curved surface.
A forming method for supplementary spacer-type multiple spot shaped three dimensional stretch bending, it is characterized in that, its step comprises:
(1) shape and the physical dimension of supplementary cushion block 1 is determined according to the cross sectional shape of section bar and the bending direction design of forming part; The length of foundation forming part and deformation extent determine the quantity of supplementary cushion block 1;
(2) two three-dimensionally shaped curved surfaces of suitable coefficient of resilience designing mould pattern 2 and first surface (A) and the second curved surface (B) is chosen according to the bending curvature of forming part and the physical dimension of supplementary cushion block 1;
(3) supplementing cushion block 1 by the fixed installation of certain spacing hold-down screw 5 needs on forming area at section bar to be bent, supplement to constitute after cushion block 1 is fixed with section bar two mutual vertical and with the solid section of mould pattern 2 two plane being perpendicular;
(4) send section bar to stretch benders together with supplementary cushion block 1 and carry out bending forming, two sides of supplementary cushion block 1 and the shaping curved face contact of mould pattern 2 should be ensured in stretch bending process, the winding of section bar on mould pattern 2 is completed by the rotation of the spatial three-dimensional movement of stretch benders chuck 6 and geometric pattern material central axis after stretching, two solid sections of supplementing cushion block 1 in winding process are one by one fitted with the forming surface of stretch bending mold pattern 2, aftershaping process of fitting whole supplementary cushion block 1 and mould pattern 2 terminates, now supplement cushion block 1 on stretch bending mold pattern 2, define a complete shaping curved surface of multiple spot, the shaping of section bar completes on the shaping curved surface of this multiple spot.
When mould of the present invention is " F ", the section bar such as "T"-shaped in stretch bending cross section, the composition of mould and section bar three-dimensional bending, twisting formation method are with embodiment 1.

Claims (3)

1. a supplementary spacer-type multiple spot shaped three dimensional stretch bending mold, it is characterized in that, this mould comprises several supplementary cushion blocks (1) and mould pattern (2), and wherein said supplementary cushion block (1) is in rectangular steel plates, offer the groove that coordinates with the irregular side of section bar cross sectional shape; The hold-down screw (5) that described mould pattern (2) comprises mold base (3), is arranged on the forming module (4) of mold base (3) top and mould pattern (2) and stretch benders workbench are fixed; Described supplementary cushion block (1) and section bar constitute the solid section that is with two mutual vertical planes after fixing, supplement cushion block (1) and be built into the shaping curved surface of multiple spot by mould pattern when (2) stretch bending, make section bar according to this curved surface flexural deformation; Two shaping application of a surface on two orthogonal solid sections of cushion block and mould pattern are supplemented in Wound Dies process.
2. one according to claim 1 supplements spacer-type multiple spot shaped three dimensional stretch bending mold, it is characterized in that, described groove domestic demand polishing, edge rounding.
3. a forming method for supplementary spacer-type multiple spot shaped three dimensional stretch bending, it is characterized in that, step comprises:
(1) shape and the physical dimension of supplementary cushion block (1) is determined according to the cross sectional shape of section bar and the bending direction design of forming part; The length of foundation forming part and deformation extent determine the quantity of supplementary cushion block (1);
(2) two three-dimensional curved surfaces of suitable coefficient of resilience designing mould pattern (2) and first surface (A) and the second curved surface (B) is chosen according to the bending curvature of forming part and the physical dimension of supplementary cushion block (1);
(3) supplementing cushion block (1) by the fixed installation of certain spacing needs on forming area at section bar to be bent;
(4) send section bar to stretch benders together with supplementary cushion block (1) and carry out stretch wrap forming, should ensure that in stretch bending process two sides of supplementary cushion block (1) contact with the profile surface of mould pattern (2).
CN201410418220.6A 2014-08-21 2014-08-21 Supplanting pad block type multi-point forming three-dimensional stretch bending mold and forming method CN104209414A (en)

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Application Number Priority Date Filing Date Title
CN201410418220.6A CN104209414A (en) 2014-08-21 2014-08-21 Supplanting pad block type multi-point forming three-dimensional stretch bending mold and forming method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410418220.6A CN104209414A (en) 2014-08-21 2014-08-21 Supplanting pad block type multi-point forming three-dimensional stretch bending mold and forming method

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CN104209414A true CN104209414A (en) 2014-12-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106607484A (en) * 2017-02-08 2017-05-03 吉林大学 A roller type multi-section control section bar three-dimensional stretch-bending dieless forming device
CN106670277A (en) * 2017-03-13 2017-05-17 西北工业大学 Flexible wrinkle control device for raised flange of frame rib part and processing method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5327764A (en) * 1993-04-05 1994-07-12 Aluminum Company Of America Apparatus and method for the stretch forming of elongated hollow metal sections
US5349839A (en) * 1993-04-05 1994-09-27 Aluminum Company Of America Flexible constraining apparatus and method for the stretch forming of elongated hollow metal sections
JP2000117331A (en) * 1998-10-13 2000-04-25 Japan Aircraft Mfg Co Ltd Structural material stretch forming jig, structural material stretch forming system and stretch formation of structural material
CN102218461A (en) * 2011-03-02 2011-10-19 北京北方车辆集团有限公司 Stretch-bending formation method of lower enclosing rib of rectangular hollow section gun turret
CN102240711A (en) * 2011-06-28 2011-11-16 于沛洲 Three-dimensional bending, twisting and forming die based on multi-point control
CN103736850A (en) * 2013-12-22 2014-04-23 吉林大学 Six-freedom-degree control blocking type flexible section bar three-dimensional stretch bending die and forming process

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5327764A (en) * 1993-04-05 1994-07-12 Aluminum Company Of America Apparatus and method for the stretch forming of elongated hollow metal sections
US5349839A (en) * 1993-04-05 1994-09-27 Aluminum Company Of America Flexible constraining apparatus and method for the stretch forming of elongated hollow metal sections
JP2000117331A (en) * 1998-10-13 2000-04-25 Japan Aircraft Mfg Co Ltd Structural material stretch forming jig, structural material stretch forming system and stretch formation of structural material
CN102218461A (en) * 2011-03-02 2011-10-19 北京北方车辆集团有限公司 Stretch-bending formation method of lower enclosing rib of rectangular hollow section gun turret
CN102240711A (en) * 2011-06-28 2011-11-16 于沛洲 Three-dimensional bending, twisting and forming die based on multi-point control
CN103736850A (en) * 2013-12-22 2014-04-23 吉林大学 Six-freedom-degree control blocking type flexible section bar three-dimensional stretch bending die and forming process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106607484A (en) * 2017-02-08 2017-05-03 吉林大学 A roller type multi-section control section bar three-dimensional stretch-bending dieless forming device
CN106607484B (en) * 2017-02-08 2017-09-01 吉林大学 Roll-type multi-section controls section bar three-dimensional bending dieless forming device
CN106670277A (en) * 2017-03-13 2017-05-17 西北工业大学 Flexible wrinkle control device for raised flange of frame rib part and processing method thereof

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