CN110479869A - Diel bead slot structure and its appearance profile forming method and stamping die - Google Patents
Diel bead slot structure and its appearance profile forming method and stamping die Download PDFInfo
- Publication number
- CN110479869A CN110479869A CN201810457573.5A CN201810457573A CN110479869A CN 110479869 A CN110479869 A CN 110479869A CN 201810457573 A CN201810457573 A CN 201810457573A CN 110479869 A CN110479869 A CN 110479869A
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- Prior art keywords
- bead
- muscle
- diel
- ontology
- slot ontology
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Classifications
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- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
The present invention provides a kind of diel bead slot structure and its appearance profile forming method and stamping dies, diel bead slot structure of the invention includes the muscle slot ontology taken shape on the binder surface of the blank holder in stamping die or cavity plate, and along the extension direction of binder surface, muscle slot ontology be in the longitudinal direction be made of the successively round and smooth arc section to connect it is wavy.Diel bead slot structure of the invention by make muscle slot ontology be in the longitudinal direction be made of the successively round and smooth arc section to connect it is wavy, it may make product on the extension direction of binder surface, inflow velocity in each position of bead is different, lock material is carried out to the control of product inflow velocity can realize by the shape of bead, and product can be reduced to the pressure of bead side wall, and the abrasion of bead can be reduced.
Description
Technical field
The present invention relates to stamping die technology, in particular to a kind of diel bead slot structure.Meanwhile this hair
The bright a kind of method for further relating to appearance profile for forming the diel bead slot structure, and it is equipped with the stamping die drawing
The stamping die of muscle slot structure.
Background technique
In the prior art, bead is often equipped between the blank holder of punch stretching mould and cavity plate, bead can increase
Big charging resistance, and then realize the control to the inflow velocity in product forming process, meanwhile, bead also has reduction to mould
Has the effect that binder surface requires.Currently, generally being controlled using various forms of beads in punch stretching mould, with full
Foot requires the difference of product inflow velocity in product forming process.The plane of the bead of traditional form is generally straight line
Type, and realize by different section forms the adjusting to product inflow velocity.
By taking existing straight line T-type bead as an example, which are mainly applied to complete lock material and molding corrugation position, Bu Guoyou
In for linear type so that at bead each point the inflow velocity of product be it is uniform, in process of production, although being drawn by adjusting
Control to material inflow velocity can be realized by prolonging the gap between the depth and convex ribs and concave bar of muscle.But it only relies on this
It is larger to adjust the frictional force that bead side wall can be made to be subject to, side wall abrasion is very fast, and then between will lead between convex ribs and concave bar
Gap becomes larger, and bead is smaller and smaller to the lock material effect of product, and eventually reduces the stability of production.
Summary of the invention
In view of this, the present invention is directed to propose a kind of diel bead slot structure, existing straight to can overcome
The more at least deficiency of line style draw-bead structure.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of diel bead slot structure comprising take shape in the binder surface of the blank holder or cavity plate in stamping die
On muscle slot ontology, along the extension direction of the binder surface, the muscle slot ontology is to be connected by successively round and smooth in the longitudinal direction
Arc section constitute it is wavy.
Further, the structure of each arc section is identical, and the midpoint of the adjacent arc section is long along the muscle slot ontology
The vertical line distance for spending direction is 35-45mm.
Further, the bending radius of the arc section is 55-75mm.
Further, the action of the muscle slot ontology is 2-4mm.
Further, the angle between the side wall and the blank holder or the cavity plate direction of motion of the muscle slot ontology be 13 °-
17°
Further, described when the binder surface is the plane vertical with the direction of motion of the blank holder or cavity plate
Angle between the side wall and the binder surface of muscle slot ontology is 104 ° -106 °；
When the binder surface is the inclined-plane arranged with the direction of motion of the blank holder or cavity plate at angle, the muscle slot
Angle between ontology and the binder surface is not more than 110 °.
Further, the width of rebate of the muscle slot ontology is 8-12mm, and the groove depth of the muscle slot ontology is 4.5-
5.5mm。
Compared with the existing technology, present invention has the advantage that
Diel bead slot structure of the present invention, by making muscle slot ontology in the longitudinal direction be by successively justifying
The wavy of the arc section composition to connect is slided, may make product on the extension direction of binder surface, the stream in each position of bead
Enter speed difference, lock material is carried out to the control of product inflow velocity so that the shape realization of bead can be passed through, meanwhile, it can also reduce
Product can reduce the abrasion of bead to the pressure of bead side wall.In addition, drawing in bead slot structure of the invention
Influence of the abrasion of muscle to bead lock material ability is also smaller, and then the bead slot structure can also be conducive to improve product production
Stability, and have preferable practicability.
In addition, the structure of each arc section is identical in the present invention, the molding of muscle slot ontology can be conducive to.And bending radius, string
The setting of high and each included angle and groove body size can also be conducive to guarantee the using effect of bead, and then be able to ascend punching
Press the stability of production.
The present invention also proposed the method for forming the appearance profile of above-mentioned diel bead slot structure simultaneously, and this at
Type method comprises the following steps that
Center line is drawn on s1, Yu Suoshu binder surface, and according to the midpoint of the adjacent arc section along the muscle slot ontology
The vertical line distance value of length direction is segmented center line；
S2, by one end of center line, by each section of alternating being separated out in step s1 to the two sides offset of center line
From X, and the action of the bending radius-muscle slot ontology of arc section described in X=；
S3, using bias after each section the same side endpoint as the center of circle, using the bending radius of the arc section be radius work
Circle, and adjacent each circle is connected by tangent line；
S4, each circle of trimming, obtain center curve, then center curve is biased to two sides to the notch of the muscle slot ontology respectively
The half of width to obtain the boundary curve of two sides, and obtains the appearance profile of the muscle slot ontology.
Forming method of the invention can get the appearance profile of muscle slot ontology in diel bead slot structure as above, with
It can be used for being made the draw-bead structure in stamping die, and then can realize lock material in punching production, and product inflow can be reduced
In the process to the abrasion of bead side wall, and it can be improved the stability of product production.
Another object of the present invention is to propose a kind of stamping die comprising be oppositely arranged and can drive in external force
Lower relative motion and the punch-pin and cavity plate for processing product, and the blank holder at the punch-pin, and in the blank holder and
The cavity plate is configured with binder surface on opposite end face respectively；It further include in the binder surface of one of the blank holder and the cavity plate
The diel bead slot structure as described above of upper setting, and correspond to the muscle slot ontology, in the blank holder and institute
State the convex ribs for being formed on another binder surface of cavity plate and adapting to the muscle slot ontology setting.
Further, the height of the convex ribs is 3.5-4.5mm.
Stamping die of the invention by being arranged diel bead slot structure as described above, and with muscle slot ontology
The convex ribs matched can realize lock material by the control to product inflow velocity in punching press, and can reduce to bead
Abrasion, and have good practicability.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of muscle slot ontology described in the embodiment of the present invention one；
Fig. 2 is the schematic diagram of the part-structure parameter of muscle slot ontology described in the embodiment of the present invention one；
Fig. 3 is the schematic diagram of the part-structure parameter of muscle slot ontology described in the embodiment of the present invention one；
Fig. 4 be the embodiment of the present invention one described in binder surface it is vertical with the direction of motion of cavity plate when, the side wall of muscle slot ontology and
Angle schematic diagram between binder surface；
When Fig. 5 arranges for the direction of motion of binder surface and cavity plate described in the embodiment of the present invention one in angle, muscle slot ontology
Angle schematic diagram between side wall and binder surface；
Fig. 6 is inflow of the product at each position of bead using described in the embodiment of the present invention one when bead slot structure
Speed schematic diagram；
Fig. 7 is using the lapping-in position view described in the embodiment of the present invention one when bead slot structure；
Fig. 8 is the schematic diagram of product minimum dimension using described in the embodiment of the present invention one when bead slot structure；
Fig. 9 is the schematic diagram of the step s1 in the forming method of the embodiment of the present invention one；
Figure 10 is the schematic diagram of the step s2 in the forming method of the embodiment of the present invention one；
Figure 11 is the schematic diagram of the step s3 in the forming method of the embodiment of the present invention one；
Figure 12 be the embodiment of the present invention one forming method in step s4 in center curve a schematic diagram；
Figure 13 be the embodiment of the present invention one forming method in step s4 in boundary curve b, c schematic diagram
Figure 14 is the structural schematic diagram of the stamping die in the embodiment of the present invention two；
Figure 15 is the structural schematic diagram of convex ribs described in the embodiment of the present invention two；
Description of symbols:
1- blank holder；
2- muscle slot ontology；
3- cavity plate；
4- convex ribs；
5- punch-pin；
100- product.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Embodiment one
The present embodiment is related to a kind of diel bead slot structure comprising take shape in blank holder in stamping die or
Muscle slot ontology on the binder surface of cavity plate, and along the extension direction of binder surface namely on the binder facial plane, muscle slot ontology
Also wavy to be made of the successively round and smooth arc section to connect in the longitudinal direction.
Wherein, the present embodiment is specifically illustrated so that above-mentioned muscle slot ontology 2 is set on blank holder as an example, and the muscle slot sheet
Setting situation of the body 2 on mold groove binder surface is essentially identical with this, hereinafter will no longer be described in detail to this.
In the present embodiment, arrangement of the muscle slot ontology 2 of composition bead slot structure on blank holder 1 is as shown in fig. 1, this
When, muscle slot ontology 2 can be to be arranged as cricoid one week in blank holder 1, and certainly, according to product punching press demand, muscle slot ontology 2 also may be used
One or more snippets only is set on blank holder 1.
The structure design of the muscle slot ontology 2 of the present embodiment is specific as shown in Figures 2 and 3, wherein shape in muscle slot ontology 2
Structure at each arc section of wavelike structure is identical, so that the muscle slot ontology 2 is shown generally as by periodic arrangement
Serpentine section concatenation extend.Wherein, the midpoint of the adjacent circular arc segments of the present embodiment hanging down along 2 length direction of muscle slot ontology
Linear distance L is set as 35-45mm, can be preferably 40mm, and it is preferably 80mm that the period of this namely above-mentioned serpentine section is long.
It in addition, the radius of curvature R of each arc section is set as 55-75mm in the present embodiment, and is preferably 60mm, and muscle slot ontology 2
Action s is then set as 2-4mm, and is preferably 3mm.
In addition, the trapezoidal shape that 2 section of muscle slot ontology of the present embodiment is substantially wide at the top and narrow at the bottom, the width k of notch is 8-
12mm, and preferably can be 10mm, the groove depth h of muscle slot ontology 2 are 4.5-5.5mm, and preferably 4.8mm.In addition, specifically making
When causing type, between the bottom surface and side wall of muscle slot ontology 2 and the side wall of muscle slot ontology 2 and the junction of 1 plane of blank holder it is equal
Rounded corner is answered, molding can be conducive to by rounded corner, while also can avoid scratching product in punching press, and convenient for the de- of product
From.
In the present embodiment, the structure of each arc section of muscle slot ontology 2 is identical, can be conducive to the molding of muscle slot ontology 2, bending radius
The setting of R and action s then can be improved the control ability that muscle slot ontology 2 flows into resistance to product, to realize reliable lock material, simultaneously
It can also reduce the pressure during product flows into 2 side wall of muscle slot ontology, and then reduce the abrasion of 2 side wall of muscle slot ontology.
As shown in Figures 4 and 5, the side wall of the muscle slot ontology 2 of the class trapezoid cross section of the present embodiment and the pressure for carrying the muscle slot ontology 2
Angle α between the direction of motion of flange 1 can be 13 ° -17 °, and it is preferably 15 °.
And the difference of the positional relationship according to the binder surface and its own direction of motion of blank holder 1, the side wall of muscle slot ontology 2
Angle between 1 binder surface of blank holder is then different.Specifically, when the movement side of the binder surface of blank holder 1 and blank holder 1
Angle when to the plane that the vertical namely binder surface is horizontal or vertical state, between the side wall and binder surface of muscle slot ontology 2
β is 104 ° -106 °, and preferably can be 105 °, and when the binder surface of blank holder 1 is the direction of motion with blank holder 1 into angle
When the inclined-plane namely binder surface of arrangement are obliquely arranged, the angle β between muscle slot ontology 2 and binder surface is not more than 110 °, example
As its can be 105 ° -110 °, and preferably be 110 °.
By making the bead on blank holder 1 using bead slot structure as above in the present embodiment, in actual use,
As shown in Figure 6, it may make product on binder facial plane, the stream at each position of bead that muscle slot ontology 2 is constituted
Enter speed difference, resistance is flowed into so as to design to generate on binder facial plane by the shape of bead, to realize to product
The control of inflow velocity and carry out lock material.
And it is as shown in Figure 7, the present embodiment makes 2 wavelike structure of muscle slot ontology, carries out lapping-in to mold in pincers worker
When, it is only necessary to progress lapping-in at the position n of 2 notch two sides of muscle slot ontology, and lapping-in rate is made to reach 90% or more, so as to
Enough reduce the labor intensity of pincers worker lapping-in.
In addition, as shown in Figure 8, by using the draw-bead structure that the muscle slot ontology 2 of wave like form is constituted, right
When product 100 carries out punching production, because locking material ability, the frontier distance muscle slot sheet of product 100 possessed by the draw-bead structure
The minimum range Z at the bead edge on body 2 namely moldminIt can be 5mm, and then thus may make the material benefit of product 100
It is got a promotion with rate, and is conducive to the reduction of production cost.
The bead slot structure of the present embodiment is first the appearance profile for forming the muscle slot ontology 2, so in specific manufacture
Afterwards according to obtained appearance profile, then the machining modes such as punching, milling can be used, entity structure is made.And the wherein muscle slot ontology 2
The forming method of appearance profile specifically include following step again:
Step s1: center line is drawn on binder surface, and according to the midpoint of adjacent circular arc segments along 2 length direction of muscle slot ontology
Vertical line distance value L center line is segmented；
Step s2: by one end of center line, by each section of alternating being separated out in step s1 to two lateral deviations of center line
Set distance X, and the radius of curvature R of X=arc section-muscle slot ontology action s；
Step s3: using the endpoint of each section the same side after biasing as the center of circle, make by radius of the radius of curvature R of arc section
Circle, and adjacent each circle is connected by tangent line；
Step s4: trimming each circle, obtains center curve a, then by center curve a respectively to two sides biasing muscle slot ontology 2
The half of width of rebate k can obtain the appearance profile of muscle slot ontology 2 to obtain boundary curve b, c of two sides.
Wherein, the specific forming process of above steps can be as shown in Fig. 9 to Figure 13, and involved each parameter value
Optimal value selected by hereinbefore each parameter can be then chosen, final muscle slot ontology 2 obtained still can be as shown in figure 1 shown in structure.
The diel bead slot structure of the present embodiment is wavy knot by making muscle slot ontology 2 in the longitudinal direction
Structure may make product 100 on the extension direction of binder surface, and the inflow velocity at each position of bead is different, so as to pass through
The shape and structure of bead realizes the control to product inflow velocity, can be realized lock material, and can reduce product 100 to drawing
The pressure of muscle side wall, can reduce the abrasion of bead, and have preferable practicability.
Embodiment two
The present embodiment is related to a kind of stamping die, as shown in Figure 14, which includes being oppositely arranged and can be
External force drives lower relative motion, punch-pin 5 and cavity plate 3 to process product, and the blank holder 1 at punch-pin 5 is arranged in, and pressing
It is configured with binder surface respectively on flange 1 and the opposite end face of cavity plate 3.And above-mentioned stamping die may further include blank holder 1
Binder surface on the diel bead slot structure as described in embodiment one that is arranged, and correspond to the muscle on blank holder 1
Slot ontology 2 is also formed with the convex ribs 4 for adapting to muscle slot ontology 2 and being arranged on the binder surface of cavity plate 3.
Wherein, the structure that the cavity plate 3 of convex ribs 4 is provided on binder surface is as shown in Figure 15, the convex ribs 4 appearance profile with
And it is consistent with the muscle slot ontology 2 in embodiment one on cross section structure, and as mold is run, convex ribs 4 are embedded in muscle slot ontology 2
In and be therewith clearance fit, to realize to the lock material of product 100.
In the present embodiment, corresponding to the groove depth h of the muscle slot ontology 2 in embodiment one, the height of convex ribs 4 is set as 3.5-
4.5mm, and be preferably 4mm.In addition, in addition to muscle slot ontology 2 and convex ribs 4 are arranged on blank holder 1 and cavity plate 5 respectively, certainly
Can be arranged on the binder surface of blank holder 1 or groove 5 with muscle slot ontology described in embodiment one 2 it is corresponding, also can be to muscle
The position of slot ontology 2 and convex ribs 4 is exchanged.
The stamping die of the present embodiment passes through the diel bead slot structure in setting embodiment one, and in cavity plate 5
It is upper that the convex ribs 4 matched with muscle slot ontology 2 are set, lock can be realized by the control of the inflow velocity to product 100 in punching press
Material, and the abrasion to bead can be reduced, and have good practicability.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of diel bead slot structure, the binder including taking shape in the blank holder in stamping die (1) or cavity plate (3)
Muscle slot ontology (2) on face, it is characterised in that: along the extension direction of the binder surface, the muscle slot ontology (2) is in length direction
It is upper wavy to be made of the successively round and smooth arc section to connect.
2. diel bead slot structure according to claim 1, it is characterised in that: the structure of each arc section is identical,
The midpoint of the adjacent arc section is 35-45mm along the vertical line distance of muscle slot ontology (2) length direction.
3. diel bead slot structure according to claim 2, it is characterised in that: the bending radius of the arc section is
55-75mm。
4. diel bead slot structure according to claim 3, it is characterised in that: the action of the muscle slot ontology (2) is
2-4mm。
5. diel bead slot structure according to claim 4, it is characterised in that: the side of the muscle slot ontology (2)
Angle between wall and the blank holder (1) or cavity plate (3) direction of motion is 13 ° -17 °.
6. diel bead slot structure according to claim 5, it is characterised in that:
When the binder surface is the plane vertical with the direction of motion of the blank holder (1) or cavity plate (3), the muscle slot ontology
(2) the angle between side wall and the binder surface is 104 ° -106 °；
When the binder surface is the inclined-plane arranged with the direction of motion of the blank holder (1) or cavity plate (3) at angle, the muscle
Angle between slot ontology (2) and the binder surface is not more than 110 °.
7. diel bead slot structure according to claim 6, it is characterised in that: the slot opening of the muscle slot ontology (2)
Degree is 8-12mm, and the groove depth of the muscle slot ontology (2) is 4.5-5.5mm.
8. a kind of method for the appearance profile for forming diel bead slot structure as claimed in claim 7, feature exist
In: the forming method comprises the following steps that
Center line is drawn on s1, Yu Suoshu binder surface, and long along the muscle slot ontology (2) according to the midpoint of the adjacent arc section
The vertical line distance value in degree direction is segmented center line；
S2, by one end of center line, by each section of alternating being separated out in step s1 to the two sides offset or dish X of center line,
And the action of the bending radius-muscle slot ontology (2) of arc section described in X=；
S3, using bias after each section the same side endpoint as the center of circle, using the bending radius of the arc section be radius make justify, and
Adjacent each circle is connected by tangent line；
S4, each circle of trimming, obtain center curve, then center curve is biased to two sides to the notch of the muscle slot ontology (2) respectively
The half of width to obtain the boundary curve of two sides, and obtains the appearance profile of muscle slot ontology (2).
9. a kind of stamping die, the punch-pin including be oppositely arranged and lower relative motion can be driven in external force and processed product (100)
(5) with cavity plate (3), and it is set to the blank holder (1) at the punch-pin (5), and in the blank holder (1) and the cavity plate (3)
Be configured with binder surface respectively on opposite end face, it is characterised in that: further include in the blank holder (1) and the cavity plate (3) it
The diel bead slot structure as described in any one of claims 1 to 7 being arranged on one binder surface, and correspond to institute
Muscle slot ontology (2) is stated, is formed on another binder surface of the blank holder (1) and the cavity plate (3) and adapts to the muscle slot
The convex ribs (4) of ontology (2) setting.
10. stamping die according to claim 9, it is characterised in that: the height of the convex ribs (4) is 3.5-4.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810457573.5A CN110479869A (en) | 2018-05-14 | 2018-05-14 | Diel bead slot structure and its appearance profile forming method and stamping die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810457573.5A CN110479869A (en) | 2018-05-14 | 2018-05-14 | Diel bead slot structure and its appearance profile forming method and stamping die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110479869A true CN110479869A (en) | 2019-11-22 |
Family
ID=68544885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810457573.5A Pending CN110479869A (en) | 2018-05-14 | 2018-05-14 | Diel bead slot structure and its appearance profile forming method and stamping die |
Country Status (1)
| Country | Link |
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| CN (1) | CN110479869A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111729978A (en) * | 2020-05-22 | 2020-10-02 | 东风汽车集团有限公司 | Drawing female die, shallow drawing die, trimming die and drawing process piece |
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| JPH0237921A (en) * | 1988-07-26 | 1990-02-07 | Nissan Motor Co Ltd | Press forming method |
| CN1145285A (en) * | 1995-07-24 | 1997-03-19 | 丰田自动车株式会社 | Drawing method and apparatus |
| JP2013180336A (en) * | 2012-03-02 | 2013-09-12 | Toyota Motor Corp | Press forming device |
| CN203917626U (en) * | 2014-06-05 | 2014-11-05 | 合肥工业大学(马鞍山)高新技术研究院 | A kind of hybrid draw-bead structure based on U-shaped full open model drawing die molded surface of complexity |
| CN205996024U (en) * | 2016-08-12 | 2017-03-08 | 福州汇龙机械模具有限责任公司 | The deep drawn mould of one-off drawing molding |
| CN106965653A (en) * | 2017-04-21 | 2017-07-21 | 阿尔特汽车技术股份有限公司 | Automobile exterior panel |
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2018
- 2018-05-14 CN CN201810457573.5A patent/CN110479869A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0237921A (en) * | 1988-07-26 | 1990-02-07 | Nissan Motor Co Ltd | Press forming method |
| CN1145285A (en) * | 1995-07-24 | 1997-03-19 | 丰田自动车株式会社 | Drawing method and apparatus |
| JP2013180336A (en) * | 2012-03-02 | 2013-09-12 | Toyota Motor Corp | Press forming device |
| CN203917626U (en) * | 2014-06-05 | 2014-11-05 | 合肥工业大学(马鞍山)高新技术研究院 | A kind of hybrid draw-bead structure based on U-shaped full open model drawing die molded surface of complexity |
| CN205996024U (en) * | 2016-08-12 | 2017-03-08 | 福州汇龙机械模具有限责任公司 | The deep drawn mould of one-off drawing molding |
| CN106965653A (en) * | 2017-04-21 | 2017-07-21 | 阿尔特汽车技术股份有限公司 | Automobile exterior panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111729978A (en) * | 2020-05-22 | 2020-10-02 | 东风汽车集团有限公司 | Drawing female die, shallow drawing die, trimming die and drawing process piece |
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