CN104384354A - Bending and shaping die of vehicle door profile - Google Patents
Bending and shaping die of vehicle door profile Download PDFInfo
- Publication number
- CN104384354A CN104384354A CN201410642559.4A CN201410642559A CN104384354A CN 104384354 A CN104384354 A CN 104384354A CN 201410642559 A CN201410642559 A CN 201410642559A CN 104384354 A CN104384354 A CN 104384354A
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- CN
- China
- Prior art keywords
- bending
- stretch bending
- die
- groups
- straight line
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to a bending and shaping die of a vehicle door profile. The bending and shaping die is characterized in that four groups of material pressing devices are arranged at the middle parts of the two sides and the two ends of a bending die, and three groups of leaning limiting devices are arranged in the straight line section of the bending die, and are respectively positioned at the tangential points of the two ends and the center point of the straight line of the die. The bending and shaping die has the advantages that by arranging the four groups of material pressing devices at the middle parts of the two sides and the two ends of the bending die, the gapless bending and shaping are realized, and the levelness of the bending part is improved; by arranging the three groups of leaning limiting devices at the straight line section of the bending die, and respectively positioning the leaning limiting devices at the tangential points of the two ends and the center point of the straight line of the die, the bulging and die disengaging of the straight line section of the bending part can be effectively prevented in the bending process, and the verticality is improved; the bending and shaping test of the door profile is performed on a V75 numerical control bending machine, the accuracy of the testing piece is detected, and the detection results show the accuracies of the bending part that the contour accuracy is less than 1mm, the levelness is less than 1mm, and the verticality is less than 1mm; the defect of distortion of the top corner cross section of the bending part is avoided, and the product quality and the accuracy can completely meet the use requirements.
Description
Technical field
The present invention relates to stretch wrap forming mould, especially relate to a kind of car door stretch bending shaping dies.
Background technology
Car door section bar is a kind of asymmetric angle-style cross section aluminium section bar bool, adopts stretch wrap forming.During stretch wrap forming, unbalance loading occurs, stress is bad, and flow of material dynamic deformation process is complicated, and sectional dimension is excessive, and bending pressurized stile is up to 120mm, because bending buckle in compression causes multiple forming defects, specific as follows.
1, contour accuracy is poor: car door section bar appearance profile trueness error requirement≤1mm, but the contour accuracy error of actual drip molding reaches 3mm.
2, perpendicularity is poor: car door section bar cross section stile perpendicularity trueness error requirement≤1mm, but the perpendicularity worst error H of actual drip molding reaches 2mm.
3, flatness is poor: car door section bar soffit plane degree trueness error requirement≤1mm, but the flatness worst error L of actual drip molding reaches 2mm.
4, excessive, the straightway region protuberance demoulding phenomenon of drift angle cross section distortion, cross-sectional constriction amount.
Summary of the invention
For above-mentioned defect, the present invention is intended to solve that shaped profile precision is overproof, car door stretch bending process flatness is overproof, the overproof problem of car door section bar shaping perpendicularity, solve section bar simultaneously and in stretch bending process, reliably support problem in real time by flanging, avoid the defect that drift angle distortion occurs, realize car door section bar high accuracy stretch wrap forming.
In order to solve the problems of the technologies described above, the invention provides a kind of car door stretch bending shaping dies, it is characterized in that: arrange 4 groups of material pressing devices in centre, stretch bending tire both sides and end positions, for realizing gapless stretch wrap forming, improving the flatness of stretch bending part; Being furnished with 3 groups in the straightway region of stretch bending tire and leaning against stopping means, lean against stopping means and lay respectively at point of contact place, mold straight line two ends and straight central point, for preventing stretch bending part straightway from swelling the demoulding in stretch bending process, improving perpendicularity.
Material pressing device comprises pressing plate, fastening leading screw, fastening base, and fastening leading screw is threaded with fastening base, and fastening base is fixedly connected with stretch bending tire.
Lean against stopping means and comprise fastening leading screw, portal frame, holder, fastening leading screw is threaded with crossbeam centre bore above portal frame, and portal frame two column bottom are fixedly connected with holder.
The present invention arranges 4 groups of material pressing devices by and end positions middle in stretch bending tire both sides, achieves gapless stretch wrap forming, improves the flatness of stretch bending part; Be furnished with 3 groups in the straightway region of stretch bending tire and lean against stopping means, lean against stopping means and lay respectively at point of contact place, mold straight line two ends and straight central point, effectively prevent stretch bending part straightway from stretch bending process, swelling the demoulding, improve perpendicularity.V75 stretch bending machine has carried out the stretch wrap forming test of gate material, the precision of testpieces is detected, testing result shows, the precision of stretch bending part reaches contour accuracy and is less than 1mm, flatness is less than 1mm, perpendicularity is less than 1mm, and stretch bending part does not have the defect of drift angle cross section distortion, and product quality and precision index reach instructions for use completely.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of material pressing device in the present invention;
Fig. 3 is the structural representation leaning against stopping means in the present invention.
Detailed description of the invention
With reference to Fig. 1, car door stretch bending shaping dies of the present invention arranges 4 groups of material pressing devices 2 in centre, stretch bending tire 1 both sides and end positions, for realizing gapless stretch wrap forming, improves the flatness of stretch bending part; Being furnished with 3 groups in the straightway region of stretch bending tire and leaning against stopping means 3, lean against stopping means and lay respectively at point of contact place, mold straight line two ends and straight central point, for preventing stretch bending part straightway from swelling the demoulding in stretch bending process, improving perpendicularity.
Stretch bending tire designs: use the stretch bending process of stretch wrap forming simulation special-purpose software PS2F opposite house section bar to carry out analysis optimization, set up cross section model and the outer contour model (gdo curve model) of stretch bending deforming simulation.Stretch bending adopts prestretching---bend and hold---, and mend the loading mode drawn, the loading environment of analog computation is snug=10%, prestretched coefficient pre=1; Bend and hold coefficient w=1; Benefit draws FACTOR P o=1.
With reference to Fig. 2, material pressing device layout on stretch bending tire amounts to 4 places, is positioned at two ends and centre position, and comprise pressing plate 201, fastening leading screw 202, fastening base 203, fastening leading screw is threaded with fastening base, and fastening base is fixedly connected with stretch bending tire 1.During material loading, fastening leading screw unclamps, pressing plate moves down increase type groove gap under gravity, facilitate material loading, again by fastening leading screw clamping platen before stretch bending, eliminate the gap of section bar stile and type groove, section bar stile is suffered restraints, allow during stile stretch wrap forming pressurized and buckle in compression does not occur, eliminate stile bending defect, improve flatness.During discharging, unclamp fastening leading screw, pressing plate moves down under gravity automatically increases mold gap, is convenient to discharging pickup.
With reference to Fig. 3, lean against the straightway region that stopping means is arranged in bending, lay respectively at mold straight line two-end-point point of contact place and straight central point.Lean against stopping means and comprise fastening leading screw 301, portal frame 302, holder 303, fastening leading screw is threaded with crossbeam centre bore above portal frame, and portal frame two column bottom are fixedly connected with holder.During stretch bending, after chuck clamping section bar, by fastening leading screw, section bar straightway is locked on stretch bending tire, when stretch bending, under power effect, straightway section bar does not produce flexural deformation, bends when holding and keeps pasting mould state, cannot swell, thus reach elimination perpendicularity difference defect object, improve contour accuracy simultaneously, after shaping, unclamp fastening leading screw and take out part.
Claims (3)
1. a car door stretch bending shaping dies, is characterized in that: arrange 4 groups of material pressing devices in centre, stretch bending tire both sides and end positions, for realizing gapless stretch wrap forming, improves the flatness of stretch bending part; Being furnished with 3 groups in the straightway region of stretch bending tire and leaning against stopping means, lean against stopping means and lay respectively at point of contact place, mold straight line two ends and straight central point, for preventing stretch bending part straightway from swelling the demoulding in stretch bending process, improving perpendicularity.
2. car door stretch bending shaping dies according to claim 1, is characterized in that: material pressing device comprises pressing plate, fastening leading screw, fastening base, and fastening leading screw is threaded with fastening base, and fastening base is fixedly connected with stretch bending tire.
3. car door stretch bending shaping dies according to claim 1, it is characterized in that: lean against stopping means and comprise fastening leading screw, portal frame, holder, fastening leading screw is threaded with crossbeam centre bore above portal frame, and portal frame two column bottom are fixedly connected with holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410642559.4A CN104384354A (en) | 2014-11-14 | 2014-11-14 | Bending and shaping die of vehicle door profile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410642559.4A CN104384354A (en) | 2014-11-14 | 2014-11-14 | Bending and shaping die of vehicle door profile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104384354A true CN104384354A (en) | 2015-03-04 |
Family
ID=52602365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410642559.4A Pending CN104384354A (en) | 2014-11-14 | 2014-11-14 | Bending and shaping die of vehicle door profile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104384354A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108188641A (en) * | 2018-02-13 | 2018-06-22 | 中车贵阳车辆有限公司 | A kind of pre- amount of deflection modulating device of channel steel curb girder |
| CN108435834A (en) * | 2018-02-13 | 2018-08-24 | 中车贵阳车辆有限公司 | A kind of pre- amount of deflection modulating device of I-shaped central sill |
| CN109530499A (en) * | 2017-09-21 | 2019-03-29 | 比亚迪股份有限公司 | The stretch bending process of stretch benders and profile |
| CN112007982A (en) * | 2020-10-28 | 2020-12-01 | 广东高谱弯曲技术有限公司 | Working platform for stretch bending of section bar |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5939423A (en) * | 1982-08-30 | 1984-03-03 | Hitachi Ltd | Stretch bending method |
| JPH11114633A (en) * | 1997-10-07 | 1999-04-27 | Showa Alum Corp | Stretch bending device for shape |
| CN101518802A (en) * | 2008-02-25 | 2009-09-02 | 西北工业大学 | Stretch-bending forming die and forming method |
| KR20110076440A (en) * | 2009-12-29 | 2011-07-06 | 주식회사 성우하이텍 | Stretch bending device having function welding |
| CN102240737A (en) * | 2011-05-17 | 2011-11-16 | 吉林大学 | Bending die for carlines of railway vehicles with back limitation mechanisms |
| CN103212638A (en) * | 2013-04-23 | 2013-07-24 | 安徽大为汽车配件有限公司 | Stretch bending die of sash of light bus |
| CN103736797A (en) * | 2013-12-30 | 2014-04-23 | 浙江兴宇汽车零部件有限公司 | Multi-functional stretch bending forming device of guide rails |
| CN203679030U (en) * | 2013-12-30 | 2014-07-02 | 浙江兴宇汽车零部件有限公司 | Guide rail stretch bending and forming die |
| CN204294775U (en) * | 2014-11-14 | 2015-04-29 | 长春轨道客车股份有限公司 | Car door stretch bending shaping dies |
-
2014
- 2014-11-14 CN CN201410642559.4A patent/CN104384354A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5939423A (en) * | 1982-08-30 | 1984-03-03 | Hitachi Ltd | Stretch bending method |
| JPH11114633A (en) * | 1997-10-07 | 1999-04-27 | Showa Alum Corp | Stretch bending device for shape |
| CN101518802A (en) * | 2008-02-25 | 2009-09-02 | 西北工业大学 | Stretch-bending forming die and forming method |
| KR20110076440A (en) * | 2009-12-29 | 2011-07-06 | 주식회사 성우하이텍 | Stretch bending device having function welding |
| CN102240737A (en) * | 2011-05-17 | 2011-11-16 | 吉林大学 | Bending die for carlines of railway vehicles with back limitation mechanisms |
| CN103212638A (en) * | 2013-04-23 | 2013-07-24 | 安徽大为汽车配件有限公司 | Stretch bending die of sash of light bus |
| CN103736797A (en) * | 2013-12-30 | 2014-04-23 | 浙江兴宇汽车零部件有限公司 | Multi-functional stretch bending forming device of guide rails |
| CN203679030U (en) * | 2013-12-30 | 2014-07-02 | 浙江兴宇汽车零部件有限公司 | Guide rail stretch bending and forming die |
| CN204294775U (en) * | 2014-11-14 | 2015-04-29 | 长春轨道客车股份有限公司 | Car door stretch bending shaping dies |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530499A (en) * | 2017-09-21 | 2019-03-29 | 比亚迪股份有限公司 | The stretch bending process of stretch benders and profile |
| CN108188641A (en) * | 2018-02-13 | 2018-06-22 | 中车贵阳车辆有限公司 | A kind of pre- amount of deflection modulating device of channel steel curb girder |
| CN108435834A (en) * | 2018-02-13 | 2018-08-24 | 中车贵阳车辆有限公司 | A kind of pre- amount of deflection modulating device of I-shaped central sill |
| CN112007982A (en) * | 2020-10-28 | 2020-12-01 | 广东高谱弯曲技术有限公司 | Working platform for stretch bending of section bar |
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| 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 |
Application publication date: 20150304 |