CN104826906A - Workpiece flange forming method and mould - Google Patents
Workpiece flange forming method and mould Download PDFInfo
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- CN104826906A CN104826906A CN201410708906.9A CN201410708906A CN104826906A CN 104826906 A CN104826906 A CN 104826906A CN 201410708906 A CN201410708906 A CN 201410708906A CN 104826906 A CN104826906 A CN 104826906A
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Abstract
The present invention discloses a workpiece flange forming method and mould. The workpiece flange forming method comprises a material pressing step and a forming step. In the material pressing step, a workpiece is pressed and a to-be-flanged part is exposed; in the forming process, a forming force is applied to one side of the to-be-flanged part and a supporting force which is smaller than the forming force is applied to the other side of the to-be-flanged part, so that the to-be-flanged part is gradually turned and folded towards an edge which is far away from the pressed part. Therefore, different from a manner of overturning the whole part of the to-be-flanged part in the prior art, the flaning process provided by the present invention is used for gradually turning and folding the to-be-flanged part, that is, the whole material of the to-be-flanged part is gradually subjected to once plastic deformation process from the pressed part in the turning and folding process, so that the residual stress to the to-be-flanged part is further eliminated and the to-be-flanged part can be flanged once with high quality; and the problems that a flanged edge is restored, and has folds and turning and folding line traces are solved, and the process is simple and ingenious.
Description
Technical field
The present invention relates to the flange forming field of workpiece, particularly, relate to a kind of flange forming method of workpiece and realize the mould of the method.
Background technology
In manufacture field, a lot of workpiece all needs to carry out flange processing and forming, especially plate workpiece, the body outer skin etc. of such as vehicle.In flanging die in the past, workpiece treat that flange part is all by molding cutter to being stamped to form, that is, in punching course, treat that flange part overturns simultaneously and forms flange.Wherein in forming process, because plate has certain rigidity and stress, springback capacity can be had after a generation deformation, then need to carry out quadric flanging shaping again, in quadric flanging shaping, often all can produce flange vestige, if the flange height of product is higher, then the product springback capacity that can produce on flange after cambered surface or shaping is still larger.In order to overcome this problem, usually the way taked is all carry out springback compensation, or adjustment flange gap is suppressed, even if but like this, being also difficult to reach desirable effect, this way also makes the debugging difficulty of mould increase simultaneously, processing number of times is more, the processing charges of mould improves, but also not necessarily can reach better effects, thus causes the efficiency of processing and effect all poor.
Therefore, a kind of flange forming technique that can complete high-quality flange is fast provided to have positive effect.
Summary of the invention
An object of the present invention is to provide a kind of flange forming method of workpiece, this flange forming method is simply ingenious, can once complete high-quality flange.
Another object of the present invention is to provide a kind of flanging molding die of workpiece, and this flanging molding die realizes flange forming method provided by the invention and simple and ingenious structure, and cost is lower.
To achieve these goals, according to an aspect of the present invention, a kind of flange forming method of workpiece is provided, this flange forming method comprises binder step and forming step, in described binder step, Work-sheet pressing is exposed and treats flange part, in described forming step, treat that the side of flange part applies forming force towards described, and treat that the opposite side of flange part applies to be less than the supporting force of described forming force to this simultaneously, described in making, treat that flange part turns down towards the edge away from this compacted part gradually from compacted part.
Preferably, treat in the forming process of flange part described, this treat flange part have close to the initial turn-line of described compacted part and in turnover process from this initial turn-line gradually away from the motion turn-line of described compacted part, be formed as turning down part between wherein said initial turn-line and motion turn-line, described motion turn-line and described treat flange position away from described compacted part edge between for not turn down part, and make described supporting force keep to described do not turn down part supporting.
According to a further aspect in the invention, a kind of flanging molding die of workpiece is provided, comprise the first die holder and the second die holder that cooperatively interact, the binder body of workpiece pressing is provided with between described first die holder and the second die holder, with make described workpiece comprise compacted part and be exposed to these compacted parts treat flange part, and the flange molding cutter described first die holder is provided with for treating flange part described in punching press, described flanging molding die also comprises the retainer body for treating flange part described in support, and this retainer body is arranged on described second die holder; Wherein, in flange forming process, towards described, described flange molding cutter treats that the side of flange part applies forming force, this treats that flange part moves towards described second die holder gradually and skids off between described flange molding cutter and described retainer body gradually simultaneously under the supporting of described retainer body, described in making, treat that flange part turns down towards the edge away from this compacted part gradually from compacted part.
Preferably, described retainer body comprises the material supporting body for treating flange part described in support, and this material supporting body can be arranged on to resilient movement on described second die holder.
Preferably, described retainer body also comprises elastic component, and this elastic component is arranged between described material supporting body and described second die holder.
Preferably, described second die holder is formed with the holding tank held on described retainer body, this holding tank is formed as the U-type groove towards described first die holder opening, and the sidewall of this holding tank is provided with the guide frame guiding described material supporting body to extend towards the bottom of this holding tank, described elastic component is arranged between described material supporting body and the described bottom of described holding tank.
Preferably, the first position limiting structure is provided with between described material supporting body and described second die holder.
Preferably, the second position limiting structure is provided with between described material supporting body and described first die holder.
Preferably, described elastic component is nitrogen spring.
Pass through technique scheme, be different from prior art the mode treating that flange channel floor overturns simultaneously, for making, flanging process provided by the invention treats that flange part turns down gradually, namely, treat that the integral material of flange part experiences a plastic history gradually in turnover process from compacted part, therefore by " multiple spot the is repeatedly shaping " principle in the mechanics of materials, eliminate the residual stress in flange portion of material further, make to treat that flange part can once high-quality flange, the resilience of effective solution flange, the problems such as fold and turn-line vestige, technique is simply ingenious.And mould provided by the invention is then improved by simple structure and completes this technique, and cost is lower practical.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for description, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the partial cross section structural representation of the flanging molding die that the preferred embodiment for the present invention provides;
Fig. 2 is the partial cross section structural representation of the flanging molding die that the preferred embodiment for the present invention provides, and wherein flange molding cutter is in non-duty;
Fig. 3 is the partial structurtes enlarged drawing of A portion and neighbouring part in Fig. 2;
Fig. 4 is the partial cross section structural representation of the flanging molding die that the preferred embodiment for the present invention provides, which show flange molding cutter start working and with the state treating flange part contact;
Fig. 5 is the partial cross section structural representation of the flanging molding die that the preferred embodiment for the present invention provides, and which show the state that flange molding cutter is carrying out flange shaping work.
Fig. 6 is the partial cross section structural representation of the flanging molding die that the preferred embodiment for the present invention provides, and which show the state that flange molding cutter completes flange shaping work.
Description of reference numerals
1 first die holder 2 second die holder
3 workpiece 4 binder bodies
5 retainer body 6 first position limiting structures
7 second position limiting structures
11 flange molding cutter 21 holding tanks
The compacted part of 22 guide frame 31
32 treat flange part 51 material supporting body
52 elastic components
A initial turn-line b motion turn-line
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the noun of locality of use is as what define based on " upper and lower, left and right " page normally in accompanying drawing, and " inside and outside " then refers to the interior and outer of corresponding component profile.
As shown in Figures 1 to 6, the invention provides a kind of flanging molding die of workpiece, this flanging molding die can realize the flange forming method of workpiece provided by the invention, as design of the present invention, flange forming method provided by the invention comprises binder step and forming step, in binder step, workpiece 3 is compressed and exposes and treats flange part 32, in forming step, towards treating that the side of flange part 32 applies forming force, and treat that the opposite side of flange part applies to be less than the supporting force of forming force to this simultaneously, therefore under the effect of supporting force, can make to treat that flange part 32 can not entirety turn down simultaneously, but make to treat that flange part 32 turns down towards the edge away from this compacted part 31 gradually from compacted part 31.
Therefore, be different from prior art the mode treating that flange channel floor overturns simultaneously, for making, flanging process provided by the invention treats that flange part 32 turns down gradually, namely, treat that the integral material of flange part 32 experiences a plastic history gradually in turnover process from compacted part, therefore by " multiple spot the is repeatedly shaping " principle in the mechanics of materials, effectively eliminate the residual stress in flange portion of material, make to treat that flange part can once high-quality flange, the resilience of effective solution flange, the problems such as fold and turn-line vestige, technique is simply ingenious.
Particularly, in the forming process treating flange part 32, as shown in Figures 3 to 6, this treat flange part 32 have close to the initial turn-line a of compacted part 31 and in turnover process from this initial turn-line a gradually away from the motion turn-line b of compacted part, wherein be formed as turning down part between initial turn-line a and motion turn-line b, motion turn-line b and treat flange position away from compacted part 31 edge between for not turn down part, and make supporting force keep to do not turn down part supporting.Wherein, in Fig. 3 and Fig. 4 treat flange part 32 also do not occur turnover distortion, and can obviously find out along with motion turn-line b is gradually away from compacted part 31 from Fig. 5 and Fig. 6, in this process, entirety treats that flange part 32 completes a plastic deformation all gradually, namely do not turn down part not overturn all the time, until it is flange part that just turnover occurs after plastic deformation.In addition, except this motion turn-line b, according to wanted shaping flange shape, in the process that flange is shaping, treat that the position bent in flange part 32 all can realize a plastic deformation, such as can find out in fig. 5 and fig., except motion turn-line b, treat that the part that do not turn down of flange part 32 also has two hooks forming hierarchic structure, these two hooks can make to treat that flange part 32 realizes a plastic deformation respectively equally, namely the present invention can by arranging one or more extra hook, make the flange better effects if treating flange part 32, thus finally obtain more stable turnup structure.
In order to realize above-mentioned flange forming method of the present invention, the flanging molding die of workpiece provided by the invention comprises the first die holder 1 and the second die holder 2 cooperatively interacted, the binder body 4 of workpiece pressing 3 is provided with between first die holder 1 and the second die holder 2, what comprise the compacted part 31 that compressed by binder body 4 to make workpiece 3 and be exposed to these compacted parts 32 treats flange part 32, and the first die holder 1 is provided with the flange molding cutter 11 treating flange part 32 for punching press, namely above-mentioned forming force is provided by this flange molding cutter 11, wherein, in order to realize object of the present invention, flanging molding die provided by the invention also comprises the retainer body 5 treating flange part 32 for support, this retainer body 5 is arranged on the second die holder 2 to provide above-mentioned supporting force.
Wherein, in flange forming process, flange molding cutter 11 is towards treating that the side of flange part 32 applies forming force, this treats that flange part 32 moves towards the second die holder 2 gradually and skids off between flange molding cutter 11 and retainer body 5 gradually, to make to treat that flange part 32 turns down towards the edge away from this compacted part 31 gradually from compacted part 31 simultaneously under the supporting of retainer body 5.Therefore, mould provided by the invention is then improved by simple structure, and namely the retainer body of above-mentioned supporting force can be able to be provided can to complete flange moulding process provided by the invention by increasing on existing mold, cost is lower practical.
It should be noted that, the embodiment that can realize technique scheme has multiple, and such as, in the position relationship of the first die holder 1 and the second die holder 2, the first die holder 1 can be positioned at the top of the second die holder 2 as upper bolster, second die holder 2 is then die shoe, and vice versa.In addition, in the motor performance mode of mould, the moving components such as the first die holder 1, second die holder 2, flange molding cutter 11 and binder body 4 can be driven respectively, such as the second die holder 2 maintains static, first die holder 1 by the slider-actuated of lathe flange molding cutter 11 and binder body 4 can respectively by lathe top rod driving or use cylinder single-candidate outer power device to drive, to realize compression and the forming operation of workpiece 3.Wherein in the binder step of workpiece, binder body 4 by Work-sheet pressing on the molding cutter being such as arranged at the second die holder 2, but can the present invention is not limited thereto.In addition, the concrete structure for binder body 4 and retainer body 5 also has various deformation.Therefore the present invention for convenience of description, introduces preferred embodiment wherein at this, and this preferred embodiment, only for illustration of the present invention, is not limited to the present invention.
Wherein, the key realizing the above-mentioned flanging process of the present invention is the setting of supporting force, this supporting force needs to be less than forming force, but need to be greater than the bending stress treating flange part 32, can avoid like this moving down and the plastic deformation that do not occur gradually treating that retainer body 5 only compresses by flange part 32 in turnover process.This concrete supporting force size can be carried out test by those skilled in the art according to different materials and operating mode and be obtained, as long as can realize the present invention, all should drop in protection scope of the present invention.
In a preferred embodiment of the invention, in order to can provide this supporting force and repeat flange work, preferably, retainer body 5 comprises the material supporting body 51 treating flange part 32 for support, and this material supporting body 51 can be arranged on to resilient movement on the second die holder 2.Namely above-mentioned supporting force is the elastic bearing power of passive generation, this elastic bearing power can by the forming force of flange molding cutter 11 compressing thus accumulating elastic potential energy and obtain material supporting body 51, and after flange completes, after the forming force of flange molding cutter 11 is cancelled, this elastic force makes material supporting body 51 return to initial position to have repeated repeatedly flange operation.In other embodiments, supporting force can also be obtained by power by other kinds of such as plastic deformation force, also can be obtained, the cylinder etc. that such as can manipulate by the active force initiatively reduced.For this type of mode of texturing that can realize the object of the invention, all should drop in protection scope of the present invention.
Particularly, realize the mode of material supporting body 51 resilient movement for be realized by elastic component, namely retainer body 5 also comprises elastic component 52, and this elastic component 52 is arranged between material supporting body 51 and the second die holder 2.The kind of this elastic component 52 can have multiple, preferably, this elastic component 52 is nitrogen spring, and this nitrogen spring is cylinder shape structure and is parts known in this field, it can provide larger supporting force and elastic restoring force by the reliable compaction of nitrogen, is applicable to the present invention.In other embodiments, elastic component 52 can also be other elastic components such as Compress Spring, for this type of mode of texturing, also should drop in protection scope of the present invention.
Conveniently arrange the retainer body 5 in the present invention, preferably, second die holder 2 is formed with the holding tank 21 held on retainer body 5, this holding tank 21 is formed as the U-type groove towards the first die holder 1 opening, and the conveniently resilient movement of material supporting body 51, more preferably, the sidewall of this U-shaped holding tank 21 is provided with the guide frame 22 guiding material supporting body 51 to extend towards the bottom of this holding tank, such as slide rail, and elastic component 52 is arranged between the bottom of material supporting body 51 and holding tank 21.As shown in Figure 1; the compression limit of elastic component 52 is exceeded and this elastic component of loss in order to prevent the motion of material supporting body 51; preferably; the first position limiting structure 6 is provided with between material supporting body 51 and the second die holder 2; the specified compression travel of elastic component 52 is less than like this by the maximum spacing of setting between this first position limiting structure 6 and second die holder 2, can this elastic component 2 of available protecting.Wherein, in a preferred embodiment of the invention, the first position limiting structure 6 can be spacing bolt structure, and in other embodiments, this position limiting structure can also be the stopping means arbitrarily such as spacer pin, limited block, and the present invention does not limit this.In like manner, restoring force in order to avoid elastic component 2 is excessive and make material supporting body 51 collide the first die holder 1, preferably, the second position limiting structure 7 is provided with between material supporting body 51 and the first die holder 1, this second position limiting structure 7 also can be formed as multiple position limiting structure well known in the art, such as limited block, the present invention does not do this and too much repeats.
To sum up, the present invention realizes ingenious method provided by the invention by the simple flanging molding die of structure, by the plastic deformation gradually making entirety treat flange part, effectively eliminates the residual stress in material, avoid the problems such as the resilience of flange, there is higher practicality and promotional value.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1. the flange forming method of a workpiece, it is characterized in that, this flange forming method comprises binder step and forming step, in described binder step, workpiece (3) is compressed and exposes and treats flange part (32), in described forming step, treat that the side of flange part (32) applies forming force towards described, and treat that the opposite side of flange part applies to be less than the supporting force of described forming force to this simultaneously, described in making, treat that flange part (32) turns down towards the edge away from this compacted part (31) gradually from compacted part (31).
2. flange forming method according to claim 1, it is characterized in that, treat in the forming process of flange part (32) described, this treat flange part (32) have close to the initial turn-line (a) of described compacted part (31) and in turnover process from this initial turn-line (a) gradually away from motion turn-line (b) of described compacted part, be formed as turning down part between wherein said initial turn-line (a) and motion turn-line (b), described motion turn-line (b) and described treat flange position away from described compacted part (31) edge between for not turn down part, and described supporting force is kept the described supporting not turning down part.
3. the flanging molding die of a workpiece, comprise the first die holder (1) and the second die holder (2) that cooperatively interact, the binder body (4) of workpiece pressing (3) is provided with between described first die holder (1) and the second die holder (2), what comprise compacted part (31) to make described workpiece (3) and be exposed to these compacted parts (32) treats flange part (32), and the flange molding cutter (11) described first die holder (1) is provided with for treating flange part (32) described in punching press, it is characterized in that, described flanging molding die also comprises the retainer body (5) for treating flange part (32) described in support, this retainer body (5) is arranged on described second die holder (2),
Wherein, in flange forming process, towards described, described flange molding cutter (11) treats that the side of flange part (32) applies forming force, this treats that flange part (32) moves towards described second die holder (2) gradually and skids off between described flange molding cutter (11) and described retainer body (5) gradually simultaneously under the supporting of described retainer body (5), described in making, treat that flange part (32) turns down towards the edge away from this compacted part (31) gradually from compacted part (31).
4. flanging molding die according to claim 3, it is characterized in that, described retainer body (5) comprises the material supporting body (51) for treating flange part described in support, and this material supporting body (51) can be arranged on to resilient movement on described second die holder (2).
5. flanging molding die according to claim 4, it is characterized in that, described retainer body (5) also comprises elastic component (52), and this elastic component (52) is arranged between described material supporting body (51) and described second die holder (2).
6. flanging molding die according to claim 5, it is characterized in that, described second die holder (2) is formed with the holding tank (21) held on described retainer body (5), this holding tank (21) is formed as the U-type groove towards described first die holder (1) opening, and the sidewall of this holding tank (21) is provided with the guide frame (22) guiding described material supporting body (51) to extend towards the bottom of this holding tank, described elastic component (52) is arranged between the described bottom of described material supporting body (51) and described holding tank (21).
7. flanging molding die according to claim 4, is characterized in that, is provided with the first position limiting structure (6) between described material supporting body (51) and described second die holder (2).
8. flanging molding die according to claim 4, is characterized in that, is provided with the second position limiting structure (7) between described material supporting body (51) and described first die holder (1).
9. flanging molding die according to claim 5, is characterized in that, described elastic component (52) is nitrogen spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410708906.9A CN104826906B (en) | 2014-11-27 | 2014-11-27 | Workpiece flange forming method and mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410708906.9A CN104826906B (en) | 2014-11-27 | 2014-11-27 | Workpiece flange forming method and mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104826906A true CN104826906A (en) | 2015-08-12 |
| CN104826906B CN104826906B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410708906.9A Active CN104826906B (en) | 2014-11-27 | 2014-11-27 | Workpiece flange forming method and mould |
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| CN (1) | CN104826906B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109013907A (en) * | 2018-09-14 | 2018-12-18 | 桂林福达股份有限公司 | A kind of backward extrusion technology and mold that slab is body formed |
| CN112338024A (en) * | 2020-10-14 | 2021-02-09 | 中国第一汽车股份有限公司 | Flanging process and pre-flanging device |
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| JPH11267768A (en) * | 1998-03-24 | 1999-10-05 | Toyota Motor Corp | Press die |
| JP2006130525A (en) * | 2004-11-05 | 2006-05-25 | Fuji Photo Film Co Ltd | Die for disk cartridge |
| CN202498145U (en) * | 2012-02-22 | 2012-10-24 | 北汽福田汽车股份有限公司 | Flanging die |
| CN103861940A (en) * | 2012-12-12 | 2014-06-18 | 瑞鹄汽车模具有限公司 | Automotive covering part stamping die |
| CN203887058U (en) * | 2014-06-04 | 2014-10-22 | 安徽江淮汽车股份有限公司 | Trimming and flanging shaping die |
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2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11267768A (en) * | 1998-03-24 | 1999-10-05 | Toyota Motor Corp | Press die |
| JP2006130525A (en) * | 2004-11-05 | 2006-05-25 | Fuji Photo Film Co Ltd | Die for disk cartridge |
| CN202498145U (en) * | 2012-02-22 | 2012-10-24 | 北汽福田汽车股份有限公司 | Flanging die |
| CN103861940A (en) * | 2012-12-12 | 2014-06-18 | 瑞鹄汽车模具有限公司 | Automotive covering part stamping die |
| CN203887058U (en) * | 2014-06-04 | 2014-10-22 | 安徽江淮汽车股份有限公司 | Trimming and flanging shaping die |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109013907A (en) * | 2018-09-14 | 2018-12-18 | 桂林福达股份有限公司 | A kind of backward extrusion technology and mold that slab is body formed |
| CN109013907B (en) * | 2018-09-14 | 2023-07-18 | 桂林福达股份有限公司 | Back extrusion process and die for molding thick plate body |
| CN112338024A (en) * | 2020-10-14 | 2021-02-09 | 中国第一汽车股份有限公司 | Flanging process and pre-flanging device |
| CN112338024B (en) * | 2020-10-14 | 2021-10-08 | 中国第一汽车股份有限公司 | Flanging process and pre-flanging device |
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| CN104826906B (en) | 2017-01-18 |
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