CN104826906B - Workpiece flange forming method and mould - Google Patents
Workpiece flange forming method and mould Download PDFInfo
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- CN104826906B CN104826906B CN201410708906.9A CN201410708906A CN104826906B CN 104826906 B CN104826906 B CN 104826906B CN 201410708906 A CN201410708906 A CN 201410708906A CN 104826906 B CN104826906 B CN 104826906B
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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, in particular it relates to a kind of flange forming method of workpiece and realization
The mould of the method.
Background technology
In manufacture field, a lot of workpiece are required to carry out flange processing and forming, especially plate workpiece, such as vehicle
Body outer skin etc..In conventional flanging die, workpiece treat that flange is all partly to being stamped to form by molding cutter,
That is, treat that flange part overturns simultaneously and forms flange in punching course.Wherein in forming process, because plate has necessarily
Rigidity and stress, can produce a deformation after have springback capacity, then need to carry out again quadric flanging shaping, turn over secondary
In the shaping of side, often all can produce flange vestige, if the flange height of product is higher, cambered surface or one-tenth can be produced on flange
Product springback capacity after shape is still larger.In order to overcome this problem, the method being usually taken all is by springback compensation, or
Adjustment flange gap is suppressed, but even if so it is also difficult to reach preferable effect, this way also makes mould simultaneously
Debugging difficulty increases, and processing number of times is more, and the processing charges of mould improves, but also not necessarily can reach better effects, thus
Cause efficiency and the effect of processing all poor.
Therefore it provides a kind of flange forming technique that can be rapidly completed high-quality flange has positive effect.
Content of the invention
It is an object of the present invention to provide a kind of flange forming method of workpiece, this flange forming method is simply ingenious,
High-quality flange can once be completed.
It is a further object of the present invention to provide a kind of flanging molding die of workpiece, this flanging molding die realizes the present invention
The flange forming method providing and simple and ingenious structure, cost is relatively low.
To achieve these goals, according to an aspect of the present invention, provide a kind of flange forming method of workpiece, this turns over
Edge forming method includes binder step and forming step, in described binder step, by Work-sheet pressing and expose and treat flange part,
In described forming step, apply forming force towards the described side treating flange part, and treat flange part to this simultaneously
Opposite side applies the supporting force less than described forming force, so that described treat flange part away from compacted part is increasingly towards
The edge turnover of this compacted part.
Preferably, in the described forming process treating flange part, this treats that flange part has close to described compacted portion
The initial turn-line dividing and the motion turnover being gradually distance from described compacted part during turnover from this initial turn-line
Line, is formed as turnover part between wherein said initial turn-line and motion turn-line, described motion turn-line is treated with described
Flange position is away from being not turn down part between the edge of described compacted part, and described supporting force is kept to described
Do not turn down the supporting of part.
According to a further aspect in the invention, provide a kind of flanging molding die of workpiece, including the first mould cooperating
Seat and the second die holder, are provided with the binder body of workpiece pressing between described first die holder and the second die holder, so that described work
Part include compacted part and be exposed to this compacted part treat flange part, and be provided with described first die holder for
The flange molding cutter of flange part is treated, described flanging molding die is also included for treating flange part described in support described in punching press
Retainer body, this retainer body is arranged on described second die holder；Wherein, in flange forming process, described flange shaping
Cutter applies forming force towards the described side treating flange part, this treat flange part under the supporting of described retainer body gradually
Move and gradually skid off between described flange molding cutter and described retainer body simultaneously towards described second die holder, so that
Treat described in obtaining that flange part is increasingly towards the edge turnover away from this compacted part from compacted part.
Preferably, described retainer body includes the material supporting body for treating flange part described in support, and this material supporting body can elasticity
It is movably arranged on described second die holder.
Preferably, described retainer body also includes elastic component, and this elastic component is arranged on described material supporting body and described second mould
Between seat.
Preferably, described second die holder is formed with the holding tank accommodating on described retainer body, this holding tank is formed as
Towards the u-shaped groove of described first die holder opening, and the described material supporting body of guiding is provided with the side wall of this holding tank towards this appearance
Receive the guide frame that the bottom of groove extends, described elastic component be arranged on described material supporting body and described holding tank described bottom it
Between.
Preferably, it is provided with the first position limiting structure between described material supporting body and described second die holder.
Preferably, it is provided with the second position limiting structure between described material supporting body and described first die holder.
Preferably, described elastic component is nitrogen spring.
By technique scheme, different from the mode treating in prior art that flange partly integrally overturns, the present invention simultaneously
The flanging process providing is to make to treat that flange part gradually turns down, i.e. treat the integral material of flange part during turnover from quilt
Pressing section starts gradually to experience a plastic history, therefore by " multiple spot the is molded repeatedly " principle in the mechanics of materials,
Further eliminate the residual stress in flange portion of material so that treat flange part can once high-quality flange, have
Effect solves the problems such as flange resilience, fold and turn-line vestige, and process is simple is ingenious.And the mould that the present invention provides then leads to
Cross simple structure improvement and complete this technique, cost is relatively low practical.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of specification, with following tool
Body embodiment is used for explaining the present invention together, but is not construed as limiting the invention.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 turns over
Edge forming cutter is in non-working condition；
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, wherein aobvious
Shown 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, wherein aobvious
Show that flange molding cutter is carrying out the state of 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, wherein aobvious
Show that flange molding cutter completes the state of flange shaping work.
Description of reference numerals
1 first die holder 2 second die holder
3 workpiece 4 binder body
5 retainer body 6 first position limiting structure
7 second position limiting structures
11 flange molding cutter 21 holding tank
The compacted part of 22 guide frame 31
32 treat flange part 51 material supporting body
52 elastic components
A initiates turn-line b motion turn-line
Specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explains the present invention, is not limited to the present invention.
In the present invention, in the case of illustrating on the contrary, the noun of locality of use such as " upper and lower, left and right " typically with
Define based on page in accompanying drawing, " inside and outside " then refers to the inner and outer of corresponding component profile.
As shown in Figures 1 to 6, the present invention provides a kind of flanging molding die of workpiece, and this flanging molding die can be real
The flange forming method of the workpiece that the existing present invention provides, the flange forming method bag providing as the design of the present invention, the present invention
Include binder step and forming step, in binder step, workpiece 3 is compressed and exposes and treats flange part 32, in forming step,
Apply forming force towards the side treating flange part 32, and the opposite side simultaneously treating flange part to this applies to be less than forming force
Supporting force, therefore in the presence of supporting force, enable to treat that flange part 32 can not integrally turn down simultaneously, and be so that and treat
Flange part 32 is increasingly towards the edge turnover away from this compacted part 31 from compacted part 31.
Therefore, the flange work providing different from the mode treating in prior art that flange partly integrally overturns, the present invention simultaneously
Skill is to make to treat that flange part 32 gradually turns down, i.e. treat the integral material of flange part 32 during turnover from compacted part
Start gradually to experience a plastic history, therefore by " multiple spot the is molded repeatedly " principle in the mechanics of materials, effectively eliminate
Residual stress in flange portion of material so that treat flange part can once high-quality flange, effectively solving flange returns
The problems such as bullet, fold and turn-line vestige, process is simple is ingenious.
Specifically, in the forming process treating flange part 32, as shown in Figures 3 to 6, this is treated that flange part 32 has and connects
The initial turn-line a of closely compacted part 31 and turnover during be gradually distance from compacted part from this initial turn-line a
Motion turn-line b, wherein initial be formed as turnover part between turn-line a and motion turn-line b, motion turn-line b with
Treat flange position away between the edge of compacted part 31 be do not turn down part, and make supporting force keep to non-folding portion
The supporting dividing.Wherein, treating in Fig. 3 and Fig. 4 flange part 32 has not occurred turnover deformation, and can be obvious from Fig. 5 and Fig. 6
Find out and be gradually distance from compacted part 31 with motion turn-line b, during this, integrally treat that flange part 32 all gradually completes
Once it is plastically deformed, that is, do not turn down part and do not overturn all the time, just turn down after being plastically deformed as turn-up portion
Point.Additionally, in addition to this motion turn-line b, according to flange shape to be molded, during flange shaping, treating turn-up portion
Divide the position bending in 32 to be all capable of once being plastically deformed, for example, can be seen that in fig. 5 and fig. and turn over except motion
Outside broken line b, treat that the part that do not turn down of flange part 32 also has two hooks forming hierarchic structure, this two hooks are same
Sample enables to treat that flange part 32 is realized once being plastically deformed respectively, and that is, the present invention can be by arranging extra one or many
Bar hook is so that treat the flange effect of flange part 32 more preferably, thus finally giving more stable turnup structure.
In order to realize the above-mentioned flange forming method of the present invention, the flanging molding die of the workpiece that the present invention provides includes phase
Mutually the first die holder 1 of cooperation and the second die holder 2, is provided with the binder of workpiece pressing 3 originally between the first die holder 1 and the second die holder 2
Body 4 so that the workpiece 3 compacted part 31 that includes being compressed by binder body 4 and be exposed to this compacted part 31 wait turn over
The flange molding cutter 11 treating flange part 32 for punching press is provided with rim portion 32, and the first die holder 1, that is, by this flange
Molding cutter 11 provides above-mentioned forming force, wherein, in order to realize the purpose of the present invention, the flanging molding die that the present invention provides
Also include treating the retainer body 5 of flange part 32 for support, this retainer body 5 is arranged on above-mentioned to provide on the second die holder 2
Supporting force.
Wherein, in flange forming process, flange molding cutter 11 applies forming force towards the side treating flange part 32,
This treats that flange part 32 is increasingly towards the second die holder 2 under the supporting of retainer body 5 and moves and be gradually molded from flange simultaneously
Skid off between cutter 11 and retainer body 5, so that treat that flange part 32 is increasingly towards from compacted part 31 being pressed away from this
The edge turnover of tight part 31.Therefore, the mould that the present invention provides then is improved by simple structure, you can with by existing
The flange moulding process that the retainer body of above-mentioned supporting force can be provided can to complete present invention offer, cost are increased on mould
Relatively low practical.
It should be noted that the embodiment being capable of technique scheme have multiple, such as in the first die holder 1 and
In the position relationship of two die holders 2, the first die holder 1 may be located at the top of the second die holder 2 as upper bolster, and the second die holder 2 is then
For die shoe, vice versa.Additionally, in the motor performance mode of mould, the first die holder 1, the second die holder 2, flange forming cutter
The tool moving component such as 11 and binder body 4 can respectively obtain driving, and the such as second die holder 2 maintains static, the first die holder 1 by
The slider-actuated of lathe and flange molding cutter 11 and binder body 4 can be respectively by the top rod driving of lathe or use gas
Cylinder single-candidate outer power device drives, 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 for example arranged at the second die holder 2, but can the invention is not restricted to this.In addition, for
The concrete structure of binder body 4 and retainer body 5 also has various deformation.The therefore present invention for convenience of explanation, at this
Introduce preferred embodiment therein, this preferred embodiment is served only for the present invention is described, is not limited to the present invention.
Wherein, realize the setting that it is critical only that supporting force of the above-mentioned flanging process of the present invention, this supporting force needs to be less than into
Type power, but need, more than the bending stress treating flange part 32, so can avoid treating flange part 32 in turnover process
In only retainer body 5 is compressed and moves down and do not occur gradually to be plastically deformed.This specific supporting force size can be passed through
Those skilled in the art carry out test according to different materials and operating mode and obtain, as long as being capable of the present invention, all should fall at this
In bright protection domain.
In a preferred embodiment of the invention, in order to providing this supporting force and repeating flange work, excellent
Selection of land, retainer body 5 includes treating the material supporting body 51 of flange part 32 for support, this material supporting body 51 is arranged on being resiliently displaceable
On second die holder 2.I.e. above-mentioned supporting force is the passive elastic bearing power producing, and this elastic bearing power can be molded by flange
The forming force of cutter 11 compressing thus accumulating elastic potential energy and obtaining to material supporting body 51, and after flange completes, flange
After the forming force revocation of molding cutter 11, this elastic force makes material supporting body 51 return to initial position repeatedly to turn over to be repeatedly performed
Side operation.In other embodiments, supporting force can also be obtained by power by other species of such as plastic deformation force,
Can also be obtained, cylinder that for example can manipulate etc. by the active force that actively reduce.For being capable of the object of the invention
Such mode of texturing, all should fall in protection scope of the present invention.
Specifically, the mode realizing material supporting body 51 resilient movement is to be realized by elastic component, and that is, retainer body 5 also includes bullet
Property part 52, this elastic component 52 is arranged between material supporting body 51 and the second die holder 2.The species of this elastic component 52 can have multiple, excellent
Selection of land, this elastic component 52 is nitrogen spring, and this nitrogen spring is cylinder shape structure and is known in the art part, it can pass through
The reliable compaction of nitrogen provides larger supporting force and elastic restoring force it is adaptable to the present invention.In other embodiments, bullet
Property part 52 can also be other elastic components such as compression spring, for such mode of texturing, also should fall in protection scope of the present invention
In.
Retainer body 5 in the arrangement present invention is it is preferable that be formed with receiving retainer body 5 on the second die holder 2 for convenience
On holding tank 21, this holding tank 21 is formed towards the u-shaped groove of the first die holder 1 opening, and material supporting body 51 for convenience
Resilient movement, it is highly preferred that be provided with the guiding bottom towards this holding tank for the material supporting body 51 on the side wall of the holding tank 21 of this u-shaped
The guide frame 22 extending, such as slide rail, and elastic component 52 is arranged between material supporting body 51 and the bottom of holding tank 21.As Fig. 1
Shown, in order to prevent the compression limit moving past elastic component 52 of material supporting body 51 and this elastic component be lost it is preferable that material supporting body
51 and second are provided with the first position limiting structure 6 between die holder 2, so pass through to set this first position limiting structure 6 and the second die holder 2 it
Between maximum spacing be less than elastic component 52 specified compression travel, can be with this elastic component 52 of effective protection.Wherein, the present invention's
In preferred embodiment, the first position limiting structure 6 can be spacing bolt structure, and in other embodiments, this position limiting structure is also
Can be without limitation for the arbitrarily stopping means such as spacer pin, limited block, the present invention.In the same manner, returning in order to avoid elastic component 2
Multiple power is excessive and make material supporting body 51 collide the first die holder 1 it is preferable that being provided with second between material supporting body 51 and the first die holder 1
Position limiting structure 7, this second position limiting structure 7 can also be formed as multiple position limiting structures well known in the art, such as limited block, this
Bright this is not done excessively repeats.
To sum up, the present invention realizes the ingenious method of present invention offer by the simple flanging molding die of structure, by making
The overall gradually plastic deformation that treat flange part, effectively eliminate the residual stress in material, it is to avoid resilience of flange etc.
Problem, has higher practicality and promotional value.
Describe the preferred embodiment of the present invention above in association with accompanying drawing in detail, but, the present invention is not limited to above-mentioned reality
Apply the detail in mode, in the range of the technology design of the present invention, multiple letters can be carried out to technical scheme
Monotropic type, these simple variant belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to various can
The combination of energy no longer separately illustrates.
Additionally, can also be combined between the various different embodiment of the present invention, as long as it is without prejudice to this
The thought of invention, it equally should be considered as content disclosed in this invention.
Claims (8)
1. a kind of flange forming method of workpiece is it is characterised in that this flange forming method includes binder step and forming step,
In described binder step, workpiece (3) is compressed and exposes and treats flange part (32), in described forming step, towards described
Treat that the side of flange part (32) applies forming force, and the opposite side simultaneously treating flange part to this applies to be less than described shaping
The supporting force of power, so that described treat that flange part (32) is increasingly towards away from this compacted part from compacted part (31)
(31) edge turnover, in the described forming process treating flange part (32), this treats that flange part (32) has close to described
The initial turn-line (a) of compacted part (31) and turnover during be gradually distance from described quilt from this initial turn-line (a)
Motion turn-line (b) of pressing section, is formed as turning down between wherein said initial turn-line (a) and motion turn-line (b)
Part, described motion turn-line (b) and described treat flange position away between the edge of described compacted part (31) be do not turn over
Folding part is divided, and described supporting force is kept to the described supporting not turning down part.
2. a kind of flanging molding die of workpiece, including the first die holder (1) cooperating and the second die holder (2), described first
It is provided with the binder body (4) of workpiece pressing (3), so that described workpiece (3) includes between die holder (1) and the second die holder (2)
Compacted part (31) and be exposed to this compacted part (31) treat flange part (32), and on described first die holder (1)
It is provided with for the flange molding cutter (11) for the treatment of flange part (32) described in punching press it is characterised in that described flange shaping mould
Tool also includes the retainer body (5) for treating flange part (32) described in support, and this retainer body (5) is arranged on described second mould
On seat (2)；
Wherein, in flange forming process, described flange molding cutter (11) is applied towards the described side treating flange part (32)
Add-on type power, it is mobile that this treats that flange part (32) is increasingly towards described second die holder (2) under the supporting of described retainer body (5)
And gradually skid off between described flange molding cutter (11) and described retainer body (5), so that described treat flange simultaneously
Partly (32) are increasingly towards the edge turnover away from this compacted part (31) from compacted part (31).
3. flanging molding die according to claim 2 is it is characterised in that described retainer body (5) is included for support
The described material supporting body (51) treating flange part, this material supporting body (51) is arranged on described second die holder (2) with being resiliently displaceable.
4. flanging molding die according to claim 3 is it is characterised in that described retainer body (5) also includes elastic component
(52), this elastic component (52) is arranged between described material supporting body (51) and described second die holder (2).
5. flanging molding die according to claim 4 is it is characterised in that be formed with receiving on described second die holder (2)
The holding tank (21) of described retainer body (5), this holding tank (21) is formed towards the u-shaped groove of described first die holder (1) opening,
And the guiding of the bottom extension guiding described material supporting body (51) towards this holding tank is provided with the side wall of this holding tank (21)
Structure (22), described elastic component (52) is arranged between described material supporting body (51) and the described bottom of described holding tank (21).
6. flanging molding die according to claim 3 is it is characterised in that described material supporting body (51) and described second die holder
(2) it is provided with the first position limiting structure (6) between.
7. flanging molding die according to claim 3 is it is characterised in that described material supporting body (51) and described first die holder
(1) it is provided with the second position limiting structure (7) between.
8. flanging molding die according to claim 4 is it is characterised 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 CN104826906A (en) | 2015-08-12 |
| CN104826906B true CN104826906B (en) | 2017-01-18 |
Family
ID=53805308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410708906.9A Active CN104826906B (en) | 2014-11-27 | 2014-11-27 | Workpiece flange forming method and mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104826906B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN104826906A (en) | 2015-08-12 |
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Address after: 102206, Beijing, Shahe, Changping District Town, Sha Yang Road, Lao Wan Village North Patentee after: Beiqi Futian Automobile Co., Ltd. Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Patentee before: Beiqi Futian Automobile Co., Ltd. |