CN102527850A - Punch-bending die for automobile bent bumper - Google Patents
Punch-bending die for automobile bent bumper Download PDFInfo
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- CN102527850A CN102527850A CN2012100104389A CN201210010438A CN102527850A CN 102527850 A CN102527850 A CN 102527850A CN 2012100104389 A CN2012100104389 A CN 2012100104389A CN 201210010438 A CN201210010438 A CN 201210010438A CN 102527850 A CN102527850 A CN 102527850A
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- bumper
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Abstract
A punch-bending die for an automobile bent bumper is used for solving the problems that an existing die is time-consuming and labor-consuming in bumper bending and difficult in ensuring precision and the like. The technical scheme includes that the punch-bending die comprises a lower die fixing part, an upper die and a lower die component, the upper die is inverted trapezoidal, arc transition surfaces are arranged at two base angles of the upper die, the lower die component is positioned on the lower die fixing part and comprises a movable lower die, fixed lower dies and rotary lower dies, the upper plane of the movable lower die corresponds to the bottom surface of the upper die, the lower portion of the movable lower die is provided with springs, the fixed lower dies are symmetrically arranged on two sides of the movable lower die, the tops of the fixed lower dies are provided with recessed arc surfaces corresponding to the arc transition surfaces of the upper die, the rotary lower dies are symmetrically arranged on two sides of the fixed lower dies and hinged to the lower die fixing part, and the top surfaces of the rotary lower dies are planes. The punch-bending die is used for machining the bumper, rebound is effectively controlled, precision of the bumper is improved, rejection rate can be decreased, production efficiency can be improved, and production cost can be reduced.
Description
Technical field
The present invention relates to a kind of mould, curve type die especially for crooked the dashing of bumper of processing automobile.
Background technology
Bumper is the main safety knot member that when automobile bumps, occupant and car body is formed protective effect; The structural design of bumper not only will be considered security performance, also will take into account the related question of other parts that are positioned at the collision prevention girders periphery and the global design problem of car body profile.Various bumpers are in the market reserved more safe space and are designed to the bending structure to foam for the moulding that cooperates cabin lid and preceding covering reaches.In the bumper production process; Its bending forming method that generally adopts is with its bending forming; As shown in Figure 3: stretch-bending molding process adopts rigid unitary stretch bending mould 8; Bumper workpiece 7 is placed on the rigid unitary stretch bending mould, and two ends apply power through chuck 9 to workpiece, make its brake forming.This forming method rebound phenomenon can occur because of unloading back stretch bending workpiece, in order to control resilience, need repair a die repeatedly, carries out engineer testing repeatedly, waste time and energy, and precision is difficult to guarantee; In addition, because the material percentage elongation of bumper is low, stretch bending process production is easy to cause the drawing crack of product spare, and percent defective is high, and production cost of products increases.
Summary of the invention
The present invention is used to overcome the defective of prior art and provides a kind of high bending motor bumper of springback capacity, machining accuracy that can reduce to dash and curve type die.
The alleged problem of the present invention is that following technical scheme solves:
A kind of bending motor bumper dashes and curves type die, and its special feature is: it is made up of counterdie fixture, upper die and lower die assembly, and said patrix is for trapezoidal, and its two bottom are the arc transition face; Said down membrane module is positioned on the counterdie fixture, and it is by movable counterdie, fixedly counterdie and rotation counterdie are formed, and wherein, the plane is corresponding with the patrix bottom surface on the movable counterdie, and movable counterdie bottom is provided with spring; Fixedly counterdie is symmetricly set on movable counterdie both sides, and fixedly the counterdie top is provided with inner concave arc surface, and this inner concave arc surface is corresponding with the arc transition face of patrix; Said rotation counterdie is symmetricly set on fixedly counterdie both sides, and rotation counterdie and counterdie fixture are hinged, and rotating the counterdie end face is the plane.
Above-mentioned bending motor bumper dashes and curves type die, and it is characterized in that: said patrix length L is 700-1300mm, patrix bottom surface length E=1/4-1/2L, and the patrix base angle is 100-170 °, the arc transition face arc radius R1 of patrix bottom is 200-350mm; Length A=the 1/2-9/10E of said movable counterdie; The arc radius R2=1.1-1.45 R1 of said fixedly counterdie inner concave arc surface.
Above-mentioned bending motor bumper dashes and to curve type die, said movable counterdie and fixedly the gap size between the counterdie be 0.02-0.05mm.
Above-mentioned bending motor bumper dashes and curves type die, and said fixedly counterdie top is provided with the transition plane of docking with movable patrix, and this transition plane is connected with inner concave arc surface gently, and the length dimension of said transition plane is B, B＞0 and 2B+A≤E.
Above-mentioned bending motor bumper dashes and curves type die, and the end surface shape of said rotation counterdie is a segment shape, and rotating the counterdie radius R is 80-200mm, and its center of rotation is that F is 30-80mm apart from its top plan range.
Above-mentioned bending motor bumper dashes and curves type die, and said spring is two symmetrically arranged nitrogen springs.
The present invention is directed to problems such as existing bumper bending forming is wasted time and energy, precision is difficult to assurance and improve, designed a kind of bending motor bumper towards curving type die.This mould is made up of the upper die and lower die assembly, and following membrane module comprises movable counterdie, fixing counterdie and rotate counterdie, and workpiece is in dashing curved process; Can overcome both sides power and moment of producing of position therebetween when simultaneously crooked, rotate counterdie and hold product spare, and dash curved process and fit with product spare all the time whole; Increased the contact area of workpiece and counterdie, wound and local stress are pressed against in the surface that has reduced workpiece, owing to there is upper and lower mould to control springback capacity jointly; Its springback capacity and crooked precision thereof can well be guaranteed, simultaneously, because not to the tensile force of both sides; Be difficult for causing the drawing crack of product spare, can ensure the quality of product surface, reduce percent defective.Adopt mould of the present invention, when effectively control resilience, improving the product precision, can reduce percent defective, enhance productivity, reduce production costs.
Description of drawings
Fig. 1 is the not structural representation of depressed state of patrix of the present invention;
Fig. 2 is the structural representation of patrix depressed state of the present invention;
Fig. 3 is existing bending motor bumper bending forming sketch map.
Label is represented as follows in the accompanying drawing: 1. counterdie fixture; 2. rotation counterdie; 3. fixing counterdie; 3-1. transition plane; 3-2. inner concave arc surface; 4. movable counterdie; 5. patrix; 6. spring; 7. bumper workpiece; 8. whole stretch bending mould; 9. chuck.
The specific embodiment
Referring to Fig. 1, the present invention is made up of counterdie fixture 1, patrix 5 and following membrane module.Said patrix 5 is for trapezoidal, and its two bottom are the arc transition face.Said membrane module down is positioned on the counterdie fixture 1; It is by movable counterdie 4, fixing counterdie 3 and rotate counterdie 2 and form; Movable counterdie, fixedly counterdie and the end face that rotates counterdie are the processing profile, and the profile that is combined by above-mentioned three constitutes the geometric surface that matees with the patrix bottom surface.Wherein, the last plane of movable counterdie is corresponding with the patrix bottom surface, and movable counterdie bottom is provided with spring 6, and spring is selected nitrogen spring for use.Said fixedly counterdie 3 is symmetricly set on movable counterdie both sides, and fixedly the counterdie top is provided with inner concave arc surface 3-1, and this inner concave arc surface is corresponding with the arc transition face of patrix; Fixedly counterdie top also is provided with the transition plane 3-2 that docks with movable patrix, and this transition plane is connected with inner concave arc surface 3-1 gently.Said rotation counterdie 2 is symmetricly set on fixedly counterdie both sides, and rotation counterdie and counterdie fixture are hinged, and rotating the counterdie end face is the plane, and the end surface shape of rotating counterdie 2 is a segment shape.
Still referring to Fig. 1; Different according to the bumper specification of workpieces of being processed; The physical dimension of each several part of the present invention is following: the length L of patrix 5 is 700-1300mm; Patrix bottom surface length E=1/4-1/2L, the patrix base angle is 100-170 °, the arc transition face arc radius R1 of patrix bottom is 200-350mm; The length dimension A=1/2-9/10E of movable counterdie 4; The fixing arc radius R2=1.1-1.45 R1 of counterdie inner concave arc surface 3-1; The length dimension of transition plane 3-2 is B, B＞0 and 2B+A≤E; Movable counterdie 4 and fixedly the gap size between the counterdie 3 be 0.02-0.05mm.The radius size R that rotates counterdie 2 is 80-200mm, and plan range is that F is 30-80mm to its center of rotation apart from the top.
Provide a specific embodiment of the present invention: patrix overall length dimension L is 1080mm, and patrix bottom surface length E is 400mm, and the patrix base angle is for being 158 °, and the arc transition face arc radius R1 of patrix bottom is 278mm; The length dimension A of movable counterdie 4 is 320mm; Fixedly the length dimension B of counterdie 3 transition plane 3-2 is 34.69mm; Fixedly the arc radius R2 of counterdie inner concave arc surface 3-1 is 350mm; Movable counterdie and fixedly the gap size between the counterdie be 0.03mm; The radius of gyration R that rotates counterdie 2 is 145mm, and plan range is that F is 50mm to its center of rotation apart from the top.
Referring to Fig. 1, Fig. 2; The course of work of the present invention is following: the first step is with the two ends location of bumper workpiece 7; It is seated in down on the membrane module, and when the bumper workpiece was not depressed, the end face that rotates counterdie 2 was in level; Movable counterdie 4 is supported by spring 6, and plane is in same plane with rotation counterdie end face on it; Second step dashed in the curved process, and patrix dashes downwards, and movable counterdie 4 moves down thereupon, rotated counterdie 2 and rotated thereupon, and bumper workpiece both sides rely on patrix gradually; In the 3rd step, the mould punching press puts in place, and patrix, bumper workpiece, following membrane module are fitted fully; After the 4th step workpiece dashed curved the completion, patrix lifted gradually, and movable counterdie 4 rises under spring 6 effects bumper workpiece 7 is held up, and the operator takes out and produces the bumper workpiece that processes.
Claims (6)
1. a bending motor bumper dashes and curves type die, it is characterized in that: it is made up of counterdie fixture (1), patrix (5) and following membrane module, and said patrix (5) is for trapezoidal, and its two bottom are the arc transition face; Said down membrane module is positioned on the counterdie fixture (1), and it is by movable counterdie (4), fixedly counterdie (3) and rotation counterdie (2) are formed, and wherein, the plane is corresponding with the patrix bottom surface on the movable counterdie, and movable counterdie bottom is provided with spring (6); Fixedly counterdie is symmetricly set on movable counterdie both sides, and fixedly the counterdie top is provided with inner concave arc surface (3-1), and this inner concave arc surface is corresponding with the arc transition face of patrix; Said rotation counterdie (2) is symmetricly set on fixedly counterdie both sides, and rotation counterdie and counterdie fixture are hinged, and rotating the counterdie end face is the plane.
2. bending motor bumper according to claim 1 dashes and curves type die; It is characterized in that: said patrix (5) length L is 700-1300mm; Patrix bottom surface length E=1/4-1/2L; The patrix base angle is 100-170 °, and the arc transition face arc radius R1 of patrix bottom is 200-350mm; Length A=the 1/2-9/10E of said movable counterdie (4); The arc radius R2=1.1-1.45 R1 of said fixedly counterdie inner concave arc surface (3-1).
3. bending motor bumper according to claim 2 dashes and to curve type die, it is characterized in that: said movable counterdie (4) and fixedly the gap size between the counterdie (3) be 0.02-0.05mm.
4. dash according to claim 1 or 2 or 3 described bending motor bumpers and curve type die; It is characterized in that: said fixedly counterdie (3) top is provided with the transition plane (3-2) of docking with movable patrix; This transition plane is connected with inner concave arc surface (3-1) gently; The length dimension of said transition plane is B, B＞0 and 2B+A≤E.
5. bending motor bumper according to claim 4 dashes and curves type die, and it is characterized in that: the end surface shape of said rotation counterdie (2) is a segment shape, and rotating the counterdie radius R is 80-200mm, and its center of rotation is that F is 30-80mm apart from its top plan range.
6. bending motor bumper according to claim 5 dashes and curves type die, and it is characterized in that: spring (6) is two symmetrically arranged nitrogen springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210010438.9A CN102527850B (en) | 2012-01-13 | 2012-01-13 | Punch-bending die for automobile bent bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210010438.9A CN102527850B (en) | 2012-01-13 | 2012-01-13 | Punch-bending die for automobile bent bumper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102527850A true CN102527850A (en) | 2012-07-04 |
| CN102527850B CN102527850B (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210010438.9A Active CN102527850B (en) | 2012-01-13 | 2012-01-13 | Punch-bending die for automobile bent bumper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537341A (en) * | 2015-11-30 | 2016-05-04 | 上海凌云工业科技有限公司 | Bend-forming method for high-strength steel bumper with D-shaped section |
| CN110385358A (en) * | 2019-07-25 | 2019-10-29 | 凌云工业股份有限公司汽车零部件研发分公司 | A kind of molding die of automobile S type aluminium alloy extrusions bumper |
| CN110899421A (en) * | 2019-12-27 | 2020-03-24 | 卡斯马汽车***（重庆）有限公司 | Method for bending metal bumper beam and method for bending aluminum alloy bumper beam |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1787151A (en) * | 1929-02-12 | 1930-12-30 | Hudson Motor Car Co | Flanging body panels |
| US2528072A (en) * | 1946-02-16 | 1950-10-31 | Mueller Otto | Expanding and contracting dies for drawing bumpers |
| GB1203991A (en) * | 1967-05-26 | 1970-09-03 | Prec Presswork Co Ltd | Improvements in or relating to the bending of sheet metal |
| JP3353254B2 (en) * | 1992-10-31 | 2002-12-03 | 川崎油工株式会社 | Press forming equipment for bumper beams for automobiles |
| CN2623370Y (en) * | 2003-06-12 | 2004-07-07 | 中国重型汽车集团有限公司 | Bending mould of ''U''workpieces |
| CN201455099U (en) * | 2009-07-21 | 2010-05-12 | 四川宁江山川机械有限责任公司 | Swinging block bottom beating molding and shaping mould structure of shock absorber bracket |
-
2012
- 2012-01-13 CN CN201210010438.9A patent/CN102527850B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1787151A (en) * | 1929-02-12 | 1930-12-30 | Hudson Motor Car Co | Flanging body panels |
| US2528072A (en) * | 1946-02-16 | 1950-10-31 | Mueller Otto | Expanding and contracting dies for drawing bumpers |
| GB1203991A (en) * | 1967-05-26 | 1970-09-03 | Prec Presswork Co Ltd | Improvements in or relating to the bending of sheet metal |
| JP3353254B2 (en) * | 1992-10-31 | 2002-12-03 | 川崎油工株式会社 | Press forming equipment for bumper beams for automobiles |
| CN2623370Y (en) * | 2003-06-12 | 2004-07-07 | 中国重型汽车集团有限公司 | Bending mould of ''U''workpieces |
| CN201455099U (en) * | 2009-07-21 | 2010-05-12 | 四川宁江山川机械有限责任公司 | Swinging block bottom beating molding and shaping mould structure of shock absorber bracket |
Non-Patent Citations (3)
| Title |
|---|
| 胡建国: "摆块式弯曲模结构设计", 《模具制造》, no. 5, 30 May 2009 (2009-05-30), pages 12 - 15 * |
| 钟翔山: "转轴式弯曲模设计", 《模具技术》, no. 5, 31 October 2004 (2004-10-31), pages 20 - 29 * |
| 黄春峰: "双转辊弯曲模具设计", 《航空精密制造技术》, no. 2, 30 April 2000 (2000-04-30), pages 42 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537341A (en) * | 2015-11-30 | 2016-05-04 | 上海凌云工业科技有限公司 | Bend-forming method for high-strength steel bumper with D-shaped section |
| CN105537341B (en) * | 2015-11-30 | 2017-10-10 | 上海凌云工业科技有限公司 | D shaped sections high-strength steel bumper bending forming methods |
| CN110385358A (en) * | 2019-07-25 | 2019-10-29 | 凌云工业股份有限公司汽车零部件研发分公司 | A kind of molding die of automobile S type aluminium alloy extrusions bumper |
| CN110385358B (en) * | 2019-07-25 | 2024-05-14 | 凌云工业股份有限公司汽车零部件研发分公司 | Forming die of S-shaped aluminum alloy section bar bumper for automobile |
| CN110899421A (en) * | 2019-12-27 | 2020-03-24 | 卡斯马汽车***（重庆）有限公司 | Method for bending metal bumper beam and method for bending aluminum alloy bumper beam |
| CN110899421B (en) * | 2019-12-27 | 2021-09-14 | 卡斯马汽车***（重庆）有限公司 | Method for bending metal bumper beam and method for bending aluminum alloy bumper beam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102527850B (en) | 2014-03-12 |
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Inventor after: An Baoqin Inventor after: Chen Erkui Inventor after: Zhang Li Inventor after: Wu Yuhui Inventor after: Yan Li Inventor before: An Baoqin Inventor before: Chen Erkui Inventor before: Zhang Li Inventor before: Wu Yuhui Inventor before: Yan Li |
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