CN107000021B - Press-processing method, the manufacturing method of component, press molding equipment and molded component - Google Patents
Press-processing method, the manufacturing method of component, press molding equipment and molded component Download PDFInfo
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- CN107000021B CN107000021B CN201580065109.6A CN201580065109A CN107000021B CN 107000021 B CN107000021 B CN 107000021B CN 201580065109 A CN201580065109 A CN 201580065109A CN 107000021 B CN107000021 B CN 107000021B
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- 238000003672 processing method Methods 0.000 title claims abstract description 48
- 238000000465 moulding Methods 0.000 title claims description 31
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000463 material Substances 0.000 claims abstract description 89
- 239000002184 metal Substances 0.000 claims abstract description 59
- 229910052751 metal Inorganic materials 0.000 claims abstract description 59
- 208000037656 Respiratory Sounds Diseases 0.000 claims abstract description 23
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 14
- 230000005764 inhibitory process Effects 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims description 13
- 241000278713 Theora Species 0.000 claims 1
- 238000000034 method Methods 0.000 description 41
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 230000008602 contraction Effects 0.000 description 7
- 238000011835 investigation Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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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
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Crackle caused by high duty metal plate stamping and forming is generated because of fold caused by shrinking flange deformation when component curved along part length direction and deformed because of stretch flange by present invention inhibition.Inhibiting that there is U word or the component curved along its length of hat section shape to generate because shrinking caused by flange deformation in the press-processing method of fold, it is characterized in that, inhibit movement of the material of a part as blank from flange part side to longitudinal wall part, keep above-mentioned material preferentially mobile from top plate portion side to longitudinal wall part while generating stretch flange deformation in above-mentioned material, and the crest line for becoming the boundary of top plate portion and longitudinal wall part is tilted relative to stamping direction, make to be rotated in a manner of mobile to part length direction in drawing and forming by the material of a part as blank that metal mold clamps, compressive deformation is generated in the plate face in part length direction by inhibiting the rotation, and the above-mentioned material of flange part and top plate portion is inhibited to generate fold by metal mold.
Description
Technical field
The present invention relates to U word or hat section shape, curved component along its length stamping sides
Method, more particularly to inhibit generate because stretch flange deform (stretch flange deformation) caused by crackle and
Because of the press-processing method of fold caused by shrinking flange deformation (shrinkage flange deformation).And this
Invention is also related to having used the manufacturing method of the component of the press-processing method.Moreover, it relates to have U word or hat
Cross sectional shape, curved component along its length press molding equipment, more particularly to inhibit to generate because stretch flange deforms
Caused by crackle and because shrink flange deformation caused by fold press molding equipment.And the present invention also relates to use
Molded component made of the press molding equipment is stamping.
Background technique
In recent years, in order to ensure simultaneously automobile crashworthiness and vehicle body lightweight, and seek the gold of higher intensity
Belong to plate.But metal plate has tensile strength more improving, to press formability substantially relevant ductility will more reduce
Tendency.Therefore, have with the drum that the ductility of material can substantially influence formability it is convex forming compared with, more use profiling (form)
The tendency of (bending) forming and drawing (deep-draw) forming.
In drawing and forming, firstly, in metal plate, that is, blank, as flange part as the material for wanting molded component
Wrinkle-resisting unit is configured on position, blank is placed on formed punch and Wrinkle-resisting unit, and in the top of blank, punch die is set.Then,
Decline punch die, press blank from there through punch die and Wrinkle-resisting unit, and while tension to blank effect appropriateness incite somebody to action
Blank warpage.At this point, due to being swaged and Wrinkle-resisting unit is pressed and is substantially introduced into the material (base between formed punch and punch die
A part of material) forming member longitudinal wall part.Therefore, being a lack of the material of ductility be easy carry out longitudinal wall part at
Shape.In addition, constraining the out-of-plane deformation (fold) of blank by punch die and Wrinkle-resisting unit, and it is easily adjusted to be applied to and is introduced in
The tension of material in longitudinal wall part, therefore have the advantages that be easily formed complex component shape.
On the other hand, in the case where manufacturing complex component shape by drawing and forming, having is becoming flange part
The end of blank at position can crack or the project of fold, especially holds along the curved component in part length direction
It is also easy to produce problem.(a) of Fig. 1, (b) and (c) in show in previous operational method to curved component along its length into
The cross-sectional view of the main view of blank shape, side view and the line A-A along (a) that are used when row forming, and (a) of Fig. 2,
(b) and (c) it shows in previous operational method in the contraction flange generated when curved component is formed along its length
The example for deforming S and stretch flange deformation E, shows the metal mold structure at the Section A-A of (a) of Fig. 1 in (a), (b) of Fig. 3
Cross-sectional view before the forming made and when forming is completed.In addition, appended drawing reference 1 indicates punch die in figure, 2 indicate formed punch, and 3 indicate wrinkle resistant
Device, 4 indicate blank, and 5 indicate the component after forming.
Component 5 has top plate portion 5a, longitudinal wall part 5b and flange part 5c, in the curved feelings such as longitudinal wall part 5b and flange part 5c
Under condition, when the material of a part as blank 4 moves between punch die 1 and Wrinkle-resisting unit 3, being full of due to wire length will receive
The deformation (stretch flange deformation) and compressed deformation (contraction on the contrary thanks to and along the circumferencial direction of curved shape being stretched
Flange deformation).When being deformed near the end of blank 4 by the stretch flange of the degree for the ductility for being more than material, meeting
Crack, when by be more than material buckled yield strength degree contraction flange deform when, fold can be generated,
High-intensitive metal plate, then be more easy to produce problem.
As the method inhibited because of fold caused by shrinking flange deformation, there is known dispersions as described in Patent Document 1 to receive
The method of contracting flange deformation.In addition, as the method for inhibiting crackle caused by deforming because of stretch flange, it is known just like patent text
Offer 2 methods for dispersing stretch flange deformation like that.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2010-227995 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2014-039957 bulletin
Summary of the invention
But since the stress that high-intensitive metal plate is then generated relative to deflection more will increase, so holding
Be also easy to produce be more than metal plate yield strength of buckling stress, to generate bigger fold.In addition, due to high-intensitive
The intensity of metal plate then fold more will increase, so being unable to fully in the method for dispersing fold as patent document 1
Reply.Also, since high-intensitive metal plate then get over and can reduce by the ductility of blank end, so patent text can be passed through
The dispersion of the deformation of stretch flange as offering 2 is limited come the crackle prevented.
As described above, be component curved along part length direction by high-intensitive metal plate stamping and forming the case where
Under, in order to inhibit because of fold and crackle caused by shrinking flange deformation and stretch flange deformation, it is necessary to which reduction is shunk flange and become
Shape and stretch flange deform the generation of itself.
The press-processing method of the invention for advantageously solving the above subject is to inhibit have U word or hat section shape
Component curved along its length generate because shrink flange deformation caused by fold method, which is characterized in that pass through suppression
It is made as movement of the material of a part of blank from flange part side to longitudinal wall part, comes on one side to generate stretching in above-mentioned material convex
It is preferentially mobile from top plate portion side to longitudinal wall part that edge deformation makes above-mentioned material on one side, also, inhibited by metal mold flange part and
The above-mentioned material of top plate portion generates fold.
It is furthermore advantageous to which other press-processing methods of the invention for solving the above subject are to inhibit have U word or hat
The method of crackle, feature exist caused by the component curved along its length of cross sectional shape is generated because of stretch flange deformation
In being tilted, made in drawing and forming relative to stamping direction by becoming the crest line on boundary of top plate portion and longitudinal wall part
It is rotated in a manner of mobile to part length direction by the material of a part as blank that metal mold clamps, is somebody's turn to do by inhibiting
Rotation generates compressive deformation in the plate face in part length direction, also, passes through metal mold inhibition flange part and top plate portion
Material generates fold.
Also, the manufacturing method of component of the invention is characterized in that, uses above-mentioned press-processing method of the invention
To form the component curved along its length with U word or hat section shape from flat blank.
On the other hand, the press molding equipment of the invention for advantageously solving the above subject is to inhibit have U word or hat
The component curved along its length of cross sectional shape generates the press molding equipment because of fold caused by shrinking flange deformation,
It is characterized in that, comprising: shrink flange and deform dampening mechanism, by inhibiting the material of a part as blank from flange part side
Movement to longitudinal wall part to make above-mentioned material preferentially from top plate portion side while generating stretch flange deformation in above-mentioned material
It is mobile to longitudinal wall part；With fold dampening mechanism, the above-mentioned material of flange part and top plate portion is sandwiched to inhibit the material to generate pleat
Wrinkle.
It is furthermore advantageous to which other press molding equipments of the invention for solving the above subject are to inhibit have U word or hat
The press molding equipment of crackle caused by the component curved along its length of cross sectional shape is generated because of stretch flange deformation,
It is characterized in that, comprising: stretch flange deforms dampening mechanism, opposite with the crest line on the boundary of longitudinal wall part by becoming top plate portion
In stamping direction tilt, come make in drawing and forming by metal mold clamp a part as blank material generate to
The mobile such rotary force in part length direction, generates compression by inhibiting the rotary force in the plate face in part length direction
Deformation；With fold dampening mechanism, the above-mentioned material of flange part and top plate portion is sandwiched to inhibit the material to generate fold.
Also, molded component of the invention is characterized in that, be using above-mentioned press molding equipment of the invention come from
Component curved along its length made of flat blank is stamping, with U word or hat section shape.
Invention effect
Press-processing method and press molding equipment according to the present invention, to the edge with U word or hat section shape
When the longitudinal wall part of the curved component of length direction is formed, with the previous drawing for keeping material mobile to longitudinal wall part from flange part side
Deep forming is different, but shapes longitudinal wall part by moving material preferentially from top plate portion side, therefore, can be avoided in flange part
Flange deformation is shunk in middle generation.In addition, when the crest line on the boundary for becoming top plate portion and longitudinal wall part is relative to stamping direction
When inclination, it can make to be rotated in a manner of mobile to part length direction in drawing and forming by the material that metal mold clamps, because
This, can be and inhibiting the rotation to compressive deformation is applied in plate face, to inhibit stretch flange to deform.Moreover, by simultaneously
Using the suppressing method of the above-mentioned suppressing method for shrinking flange deformation and stretch flange deformation, and can inhibit simultaneously along length
The flange part of the curved component in direction generates fold and cracks.Also, according to having used press-processing method of the invention
Component of the invention manufacturing method and the stamping molded component using press molding equipment of the invention, right
When carrying out stamping with U word or the component curved along its length of hat section shape, generation is able to suppress because shrinking
Fold and because of the side or two sides caused by stretch flange deformation in crackle caused by flange deformation.
In addition, in press-processing method and press molding equipment of the invention, it is preferred that by so that individual
The flange part that contraction flange deformation is generated in drawing and forming shares and the symmetrical mode forming two simultaneously on the basis of flange part
A component, to inhibit movement of the material from above-mentioned flange part side to longitudinal wall part.Thereby, it is possible to inhibit to produce by simple structure
Fold caused by the raw flange deformation because of contraction.
In addition, in press-processing method and press molding equipment of the invention, it is preferred that on the component of metal mold
The face parallel with stamping direction is set to inhibit the rotation of material.Thereby, it is possible to inhibit to generate by simple structure
Crackle caused by being deformed because of stretch flange.
Moreover, preferably using above-mentioned two simultaneously in press-processing method and press molding equipment of the invention
A press-processing method or two press molding equipments.Thereby, it is possible to inhibit the flange of curved component along its length simultaneously
Portion generates fold and cracks.
Moreover, in press-processing method and press molding equipment of the invention, it is preferred that in the pleat based on metal mold
In the inhibition of wrinkle, pressure will be inhibited to be set as 0.1~100MPa the gauffer of blank, or by longitudinal wall part shape in metal mold with
Gap between material remains the 0~200% of the plate thickness of material.
Moreover, in press-processing method and press molding equipment of the invention, it is preferred that by tensile strength be 440
The metal plate of~1470MPa is used as blank.It is able to suppress in this case and generates rushing for the component being made of high-strength metal sheet
When pressing formation because of fold caused by shrinking flange deformation and because of the side or two caused by stretch flange deformation in crackle
Side.
Detailed description of the invention
(a) of Fig. 1, (b) and be (c) in previous operational method to making when curved component is formed along its length
The main view of blank shape, side view and along Fig. 1 (a) line A-A cross-sectional view.
(a) of Fig. 2, (b) and be (c) to indicate that curved component along its length is formed in previous operational method
When generate the main view of example for shrinking flange deformation and stretch flange deformation, side view and (a) along Fig. 2 line A-A
Cross-sectional view.
(a), (b) of Fig. 3 is before indicating the forming of the die structure at the Section A-A of Fig. 1 (a) and when forming is completed
Cross-sectional view.
(a) of Fig. 4, (b) and indicated in an embodiment of press-processing method of the invention to along length
The line A-A of the main view of the shape for the blank that the curved component in direction uses when being formed, side view and (a) along Fig. 4
Cross-sectional view.
(a) of Fig. 4-1, (b) and be (c) the intermediate formed products for indicating to shape with the press-processing method of above embodiment
The main view of shape, side view and along Fig. 4-1 (a) line A-A cross-sectional view.
(a) of Fig. 4-2, (b) and be (c) shape for indicating the component shaped with the press-processing method of above embodiment
Main view, side view and along Fig. 4-2 (a) line A-A cross-sectional view.
(a), (b) of Fig. 5-1 is before indicating the forming of the die structure at the Section A-A of (a) of Fig. 4-1 and to have shaped
At when cross-sectional view.
(a), (b) of Fig. 5-2 is before indicating the forming of the die structure at the Section A-A of (a) of Fig. 4-2 and to have shaped
At when cross-sectional view.
(a) of Fig. 6, (b) and be (c) to indicate blank used in material movement investigation of the present inventor in drawing and forming
The main view of shape, side view and along Fig. 6 (a) line A-A cross-sectional view.
(a) of Fig. 6-1, (b) and (c) be indicate above-mentioned material act carried out in investigation it is stamping made of it is intermediate at
The main view of the shape of shape product, side view and along Fig. 6-1 (a) line A-A cross-sectional view.
(a) of Fig. 6-2, (b) and (c) indicate above-mentioned material act carried out in investigation it is stamping made of component
The main view of shape, side view and along Fig. 6-2 (a) line A-A cross-sectional view.
(a) of Fig. 7, (b) and indicated in an other embodiments of press-processing method of the invention to edge
The A- of the main view of the shape for the blank that length direction curved component uses when being formed, side view and (a) along Fig. 7
The cross-sectional view of A line.
(a) of Fig. 7-1, (b) and be (c) the intermediate formed products for indicating to shape with the press-processing method of above embodiment
The main view of shape, side view and along Fig. 7-1 (a) line A-A cross-sectional view.
(a) of Fig. 7-2, (b) and be (c) shape for indicating the component shaped with the press-processing method of above embodiment
Main view, side view and along Fig. 7-2 (a) line A-A cross-sectional view.
Specific embodiment
Hereinafter, by explaining embodiments of the present invention in detail based on the embodiment of attached drawing.Here, (a) of Fig. 4,
(b) of Fig. 4 and (c) of Fig. 4 are indicated in an embodiment of press-processing method of the invention to curved along its length
The main view of the shape for the blank that bent component uses when being formed, side view and along Fig. 4 (a) line A-A section view
Figure, (c) of (a) of Fig. 4-1, (b) of Fig. 4-1 and Fig. 4-1 are to indicate to shape with the press-processing method of above embodiment
The main view of the shape of intermediate formed products, side view and along Fig. 4-1 (a) line A-A cross-sectional view, (a), the figure of Fig. 4-2
(b) of 4-2 and (c) of Fig. 4-2 are the main views for indicating the shape of the component shaped with the press-processing method of above embodiment
Figure, side view and along Fig. 4-2 (a) line A-A cross-sectional view.In addition, (b) of (a) of Fig. 5-1, Fig. 5-1 is to indicate Fig. 4-
Cross-sectional view before the forming of die structure at the Section A-A of 1 (a) and when forming is completed, (a) of Fig. 5-2, Fig. 5's-2
(b) it is before indicating the forming of the die structure at the Section A-A of (a) of Fig. 4-2 and cross-sectional view when forming is completed.In addition,
Part identical with previous example is shown by same appended drawing reference in figure.
Various grind has been repeated firstly for the countermeasure because of fold caused by shrinking flange deformation in the present inventor
Study carefully.At this point, due to shrink flange deformation be when material is mobile to longitudinal wall part from flange part side wire length have it is extra due to generate, institute
To consider whether identical longitudinal wall part to be formed by the insufficient stretch flange deformation of wire length on the contrary.As a result,
As long as expecting the moving direction reversion for being used in the material of forming longitudinal wall part.That is, only if it were not for from flange part side
But fold would not be generated in flange part from top plate portion side forming longitudinal wall part.Moreover, because generating stretch flange deformation
Position becomes the top plate portion side separate from the end of blank, thus also have be difficult to generate because of stretch flange deformation caused by split
The advantages of line.
The reply example for shrinking flange deformation based on embodiments of the present invention is shown in Fig. 4, Fig. 4-1 and Fig. 4-2, it will
The construction of the metal mold as press molding equipment at section therein along line A-A is shown in Fig. 5-1, Fig. 5-2.Punching
Pressing formation direction is the paper vertical direction relative to main view.Flange change is shunk in order to constrain in previous operational method
Material at the position B of shape is mobile, as shown in Fig. 4-1~Fig. 4-2, as long as so as to the flange part of above-mentioned contraction flange deformation occurs
It shares and symmetrical mode shapes two components 5 simultaneously on the basis of the flange part.As a result, as Fig. 4-1 institute
Show, can make from the mobile preferential generation of the material of top plate portion side, material generates stretch flange deformation E because wire length is extended.And
And in subsequent processing, as shown in the Fig. 4-2, after the flange part to outside is formed, completes two and inhibit contraction convex
The component curved along its length of edge deformation.That is, the structure for obtaining two components of metal mold, which is equivalent to, shrinks flange change
Shape dampening mechanism.
In the process of Fig. 4-2, in longitudinal wall part and top plate portion in the curved situation in part length direction, material is uneven
Ground is mobile to longitudinal wall part, therefore in order to inhibit unwanted out-of-plane deformation (fold), and it is preferred that inhibiting pushing up by metal mold
The material moved in plate portion.In addition, preferably passing through metal mold since flange part becomes the joint portion between other component
To prevent out-of-plane deformation.Specifically, above-mentioned top plate portion can be clamped and constrained by formed punch 2 and base (pad) 7, and
The degree that can be moved with material is by punch die 1 and Wrinkle-resisting unit 3 come clamped flanges portion side.In addition, in the process of Fig. 4-2,
When material is mobile to longitudinal wall part from top plate side in drawing and forming, it can generate and shrink flange deformation, it is therefore possible to become to produce
The reason of raw fold.Therefore can be clamped as described above by formed punch 2 and base 7 and constrain top plate portion material and with
The degree that material can move is by punch die 1 and Wrinkle-resisting unit 3 come clamped flanges side.That is, these of the clamping material of metal mold
Structure is equivalent to fold dampening mechanism.
In addition, flange deformation can be shunk by constraining in previous operational method in press-processing method of the invention
Position B at the mobile method of material be not limited to the example of Fig. 4-2, in addition to because being produced by metal mold to clamp metal plate
Other than raw frictional resistance, additionally it is possible to using because clamping gold by the metal mold for being provided with the concaveconvex shapes such as flanging muscle and embossing
The deformation drag of metal plate for belonging to plate and generating.
Next the countermeasure of crackle has been repeated various caused by the present inventor because of stretch flange for deforming
Research.At this point, discovery is by being suitable for the component by the bending on part length direction along the setting of the height change direction of component
And characteristic variation as shown in Figure 6 can be observed in the movement of the material in drawing and forming.
(c) of (a) of Fig. 6, (b) of Fig. 6 and Fig. 6 are to indicate the present inventor in the material movement investigation in drawing and forming
The main view of the shape of the blank used, side view and along Fig. 6 (a) line A-A cross-sectional view, (a), Fig. 6-1 of Fig. 6-1
(b) and Fig. 6-1 (c) be indicate above-mentioned material act in investigation it is stamping made of intermediate formed products shape master
View, side view and along Fig. 6-1 (a) line A-A cross-sectional view, (c) of (a) of Fig. 6-2, (b) of Fig. 6-2 and Fig. 6-2
Be indicate above-mentioned material act in investigation it is stamping made of the main view of shape of component, side view and along Fig. 6-2
(a) line A-A cross-sectional view.
The result of above-mentioned material movement investigation is investigated, finds the side by becoming top plate portion and longitudinal wall part
The crest line on boundary is relative to stamping direction (the paper left and right directions of the paper vertical direction of main view, side view) such as with Fig. 6-
It is tilted like that shown in slant range C in 1 (b), and can make a part of material of blank 4 with to portion in drawing and forming
The mobile mode of part length direction (the thick-line arrow direction of Fig. 6-1, Fig. 6-2) rotates.Rotation amount is according to relative to stamping
The inclination angle in direction and change, the moving direction of the material of the direction of rotation because shaping longitudinal wall part due to, changes.Therefore, when material
It is such from flange part that moving direction becomes Fig. 6-2 from the movement (the first procedure) that top plate portion side carries out as Fig. 6-1
When movement (second operation work) that side carries out, the direction reversion of rotation.
(c) of (a) of Fig. 7, (b) of Fig. 7 and Fig. 7 are indicated in one of press-processing method of the invention other implementations
To the main view of the shape of the blank used when curved component is formed along its length, side view and along figure in mode
(c) of the cross-sectional view of the line A-A of 7 (a), (a) of Fig. 7-1, (b) of Fig. 7-1 and Fig. 7-1 is indicated with above embodiment
The main views of shape of the intermediate formed products of press-processing method forming, side view and the line A-A along (a) of Fig. 7-1 cut open
View, (c) of (a) of Fig. 7-2, (b) of Fig. 7-2 and Fig. 7-2 are to indicate to shape with the press-processing method of above embodiment
The main view of shape of component, side view and along Fig. 7-2 (a) line A-A cross-sectional view.
The present inventor uses above-mentioned opinion, it is contemplated that is able to suppress shown in Fig. 7~Fig. 7-2 and shrinks flange deformation and stretch
Flange deforms the press-processing method of the embodiments of the present invention of both sides.In case of above-mentioned rotation, then only pass through inhibition
The rotary force, it will be able to compressive deformation is generated in the plate face that stretch flange deformation occurs, in the present embodiment by metal plate 8
Position that stamping metal mold is set, being abutted with the part length direction both ends of the surface of blank 4 or intermediate formed products 6.Gold
The plate 8 for belonging to mould is equivalent to stretch flange deformation dampening mechanism.
The method of material rotation is hindered to be not only that the method for metal plate 8 is arranged as shown in Fig. 7-1, Fig. 7-2, it can be with
It is only the bearing surface that setting is parallel with stamping direction on metal mold, therefore upper excellent in terms of cost.The bearing surface exists
In drawing and forming with the end face sliding contact of blank 4 or intermediate formed products 6 and rub, therefore preferably by using than blank 4
The material of material hard is to prevent from being shaved or for that can replace the construction of bearing surface.
Press-processing method and press molding equipment according to the present invention, can not only make with hat section shape
Curved component along its length, additionally it is possible to make U-shaped by the way that the material for being located at flange part is completely used for longitudinal wall forming
The component of cross sectional shape.
In the inhibition of the fold based on metal mold, and it is preferred that gauffer inhibition pressure is set as 0.1~100MPa.If pressure
It is then difficult to inhibit the out-of-plane deformation (fold) of blank 4 less than 0.1MPa, and has been more than that the pressure of 100MPa then needs high rigidity
Pressurizing device, thus in terms of cost on not preferably.In the case where inhibiting pressure without using gauffer, preferably shaped in longitudinal wall part
The middle gap by between the metal plate of metal mold and blank 4 or intermediate formed products 6 remains the 0~200% of plate thickness.Keep gap small
In plate thickness 0% there is no special advantage, excessive power can be applied to metal mold on the contrary, it is therefore possible to generate metal mold
Abrasion and/or deformation.On the other hand, when vacating the gap greater than 200%, the fold of generation can become larger, and therefore, it is difficult at it
De-shirred is removed in finishing process afterwards.
The metal plate preferred tensile strength of material as blank 4 is 440~1470MPa.Tensile strength is less than 440MPa
Metal plate it is excellent in ductility and drawing and forming, therefore using operational method of the invention the advantages of is few.In addition, being more than
The metal plate of 1470MPa lacks ductility, therefore is easy in the present invention in the punch shoulder and punch die for not becoming object
It is cracked at shoulder, and being possible to can not molded component.
Using 270 shown in table 1,440,980,1180,1470MPa grades of steel plates come using previous method is as experimental material
Forming results are evaluated by drawing and forming shown in Fig. 2, invention method is by twice work shown in Fig. 4~Fig. 4-2
The exploitation method B of the forming of two procedures shown in exploitation the method A and Fig. 7~Fig. 7-2 of the forming of sequence comments forming results
Valence.Metal plate is pressed by metal mold with 10MPa.The evaluation result is shown in table 2.The evaluation of formed products passes through view
Feel that carry out, the fold and crackle generated in flange part is evaluated with zero, △, × these three grades for identification.It is sending out
Be denoted as in the case where having given birth to significant fold and crackle ×, it is denoted as △ in the case where slight fold and necking down has occurred,
Zero is denoted as in the case where there is no fold, crackle and necking down.
Table 1
| Symbol | Steel grade | Plate thickness (mm) | YP(MPa) | TS(MPa) | El (%) |
| 270 | 270MPa grades of steel plates | 0.7 | 160 | 293 | 50 |
| 440 | 440MPa grades of steel plates | 1.2 | 310 | 465 | 38 |
| 980 | 980MPa grades of steel plates | 1.4 | 650 | 985 | 16 |
| 1180 | 1180MPa grades of steel plates | 1.6 | 950 | 1200 | 10 |
| 1470 | 1470MPa grades of steel plates | 1.6 | 1290 | 1520 | 8 |
Table 2
In 270MPa grades of steel plates, either previous method still develop method A, B with can not generating fold and crackle at
Shape.In the case where 440MPa grades of steel plates, significant fold is produced in previous method, can prevent from producing in exploitation method A, B
Raw fold.In addition, evaluating about crackle, necking down observed in previous method and exploitation method A, but do not produce in exploitation method B
Raw crackle and necking down.In the case where 980,1180 and 1470MPa grades of steel plate, the fold observed in previous method is in exploitation method
A, it is not observed in B.In addition, evaluating about crackle, crackle is produced in previous method and exploitation method A, but in exploitation method B
In do not crack and necking down.
Industrial applicibility
In this way, press-processing method according to the present invention and press molding equipment, to U word or hat section shape
It is shaped when the longitudinal wall part of the component curved along its length of shape is formed by moving material preferentially from top plate portion side
Therefore longitudinal wall part can be avoided to generate in flange part and shrink flange deformation.In addition, when become top plate portion and longitudinal wall part
When the crest line on boundary is tilted relative to stamping direction, the material clamped in drawing and forming by metal mold can be made with to portion
The mobile mode of part length direction rotates, and therefore, can be inhibited and inhibiting the rotation to compressive deformation is applied in plate face
Stretch flange deformation.Also, the manufacturing method and molded component of component according to the present invention, to U word or hat section
When the component curved along its length of shape is stamping, be able to suppress generation because shrink flange deformation caused by fold and
A side or two sides caused by being deformed because of stretch flange in crackle.
Description of symbols
1 punch die
2 formed punches
3 Wrinkle-resisting units
4 blanks
5 components
5a top plate portion
5b longitudinal wall part
5c flange part
6 intermediate formed products
7 bases
8 plates
B generates the position for shrinking flange deformation
C slant range
The deformation of E stretch flange
S shrinks flange deformation
Claims (18)
1. a kind of press-processing method, inhibit to have the alongst and curved to width direction of U word or hat section shape
Bent component is generated because shrinking fold caused by flange deforms, and the press-processing method is characterized in that,
By inhibiting movement of the material of a part as blank from flange part side to longitudinal wall part, produce in the material on one side
Raw stretch flange deformation makes the material preferentially mobile from top plate portion side to longitudinal wall part on one side,
Also, the material of flange part and top plate portion is inhibited to generate fold by metal mold.
2. press-processing method as described in claim 1, which is characterized in that
It shares and so as to be generated in individual drawing and forming and shrink the flange part that flange deforms by symmetrical on the basis of flange part
Mode shape two components simultaneously, thus inhibit movement of the material from the flange part side to longitudinal wall part.
3. press-processing method as claimed in claim 1 or 2, which is characterized in that
The metal plate that tensile strength is 440~1470MPa is used as blank.
4. a kind of press-processing method, inhibit to have the alongst and curved to width direction of U word or hat section shape
Crackle caused by bent component is generated because of stretch flange deformation, the press-processing method be characterized in that,
Crest line by becoming the boundary of top plate portion and longitudinal wall part is tilted relative to stamping direction, is made in drawing and forming
It is rotated in a manner of mobile to part length direction by the material of a part as blank that metal mold clamps, is somebody's turn to do by inhibiting
It rotates to generate compressive deformation in the plate face in part length direction,
Also, the material of flange part and top plate portion is inhibited to generate fold by metal mold.
5. press-processing method as claimed in claim 4, which is characterized in that
The face parallel with stamping direction is set on metal mold to inhibit the rotation of material.
6. the press-processing method as described in claim 4 or 5, which is characterized in that
In the inhibition of the fold based on metal mold, pressure will be inhibited to be set as 0.1~100MPa the gauffer of blank, or will indulge
The gap between metal mold and material in wall portion forming remains the 0~200% of the plate thickness of material.
7. press-processing method as described in claim 4 or 5, which is characterized in that
The metal plate that tensile strength is 440~1470MPa is used as blank.
8. press-processing method as claimed in claim 6, which is characterized in that
The metal plate that tensile strength is 440~1470MPa is used as blank.
9. a kind of press-processing method, which is characterized in that
Simultaneously using press-processing method and press-processing method described in claim 4 or 5 described in as claimed in claim 1 or 22.
10. press-processing method as claimed in claim 9, which is characterized in that
In the inhibition of the fold based on metal mold, pressure will be inhibited to be set as 0.1~100MPa the gauffer of blank, or will indulge
The gap between metal mold and material in wall portion forming remains the 0~200% of the plate thickness of material.
11. the press-processing method as described in claim 9 or 10, which is characterized in that
The metal plate that tensile strength is 440~1470MPa is used as blank.
12. a kind of manufacturing method of component, which is characterized in that
Using press-processing method described in any one of any one of claims 1 to 11 11 come from flat blank formed have U word or
Hat section shape alongst and to the curved component of width direction.
13. a kind of press molding equipment, inhibit to have U word or hat section shape alongst and to width direction
Curved component is generated because fold, the press molding equipment are characterized in that caused by shrinking flange deformation, comprising:
It shrinks flange and deforms dampening mechanism, by inhibiting the material of a part as blank from flange part side to longitudinal wall part
It is mobile, the material is moved preferentially from top plate portion side to longitudinal wall part while generating stretch flange deformation in the material
It is dynamic；With
Fold dampening mechanism sandwiches the material of flange part and top plate portion to inhibit the material to generate fold.
14. press molding equipment as claimed in claim 13, which is characterized in that
The flange deformation dampening mechanism of shrinking is so as to generate the flange part for shrinking flange deformation in individual drawing and forming
Shared and two components of symmetrical mode while forming on the basis of flange part forming section.
15. a kind of press molding equipment, inhibit to have U word or hat section shape alongst and to width direction
Crackle caused by curved component is generated because of stretch flange deformation, the press molding equipment are characterized in that, comprising:
Stretch flange deform dampening mechanism, by become top plate portion and longitudinal wall part boundary crest line relative to stamping
Direction inclination, generate the material of a part as blank clamped in drawing and forming by metal mold in part length side
Such rotary force is moved up, generates compressive deformation in the plate face in part length direction by inhibiting the rotary force；With
Fold dampening mechanism sandwiches the material of flange part and top plate portion to inhibit the material to generate fold.
16. press molding equipment as claimed in claim 15, which is characterized in that
Stretch flange deformation dampening mechanism be with the ora terminalis sliding contact of the material come inhibit the material rotation tool
There is the component in the face parallel with stamping direction.
17. a kind of press molding equipment, which is characterized in that
With press molding equipment described in press molding equipment and claim 15 or 16 described in claim 13 or 14 this
Two sides.
18. a kind of molded component, which is characterized in that
Be using press molding equipment described in any one of claim 13 to 17 come stamping from flat blank and
At with U word or hat section shape alongst and to the curved component of width direction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014244755A JP5967386B2 (en) | 2014-12-03 | 2014-12-03 | Press molding method, component manufacturing method using the method, and press molding apparatus |
| JP2014-244755 | 2014-12-03 | ||
| PCT/JP2015/081705 WO2016088519A1 (en) | 2014-12-03 | 2015-11-11 | Press-forming method and method of manufacturing component employing same method, and press-forming device and formed component press-formed using same device |
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| Publication Number | Publication Date |
|---|---|
| CN107000021A CN107000021A (en) | 2017-08-01 |
| CN107000021B true CN107000021B (en) | 2019-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201580065109.6A Expired - Fee Related CN107000021B (en) | 2014-12-03 | 2015-11-11 | Press-processing method, the manufacturing method of component, press molding equipment and molded component |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5967386B2 (en) |
| KR (1) | KR102018964B1 (en) |
| CN (1) | CN107000021B (en) |
| MX (1) | MX2017007025A (en) |
| WO (1) | WO2016088519A1 (en) |
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| RU2705881C1 (en) | 2016-06-16 | 2019-11-12 | Ниппон Стил Корпорейшн | Proposed article for structural element of vehicle, method of fabricated article stretching for structural element of vehicle and device for fabricated article stretching for structural element of vehicle |
| JP6330930B1 (en) | 2017-01-27 | 2018-05-30 | Ｊｆｅスチール株式会社 | Press forming method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000176582A (en) * | 1998-12-11 | 2000-06-27 | Nissan Motor Co Ltd | Reinforcing member for automobile vehicle body and its production |
| JP4833531B2 (en) * | 2003-11-11 | 2011-12-07 | 新日本製鐵株式会社 | Press molding processing apparatus, press molding processing method, computer program, and recording medium |
| JP4160501B2 (en) * | 2003-12-26 | 2008-10-01 | 独立行政法人科学技術振興機構 | Wrinkle suppression force distribution control device for plate press forming |
| JP4556432B2 (en) * | 2004-01-16 | 2010-10-06 | Ｊｆｅスチール株式会社 | Metal plate press forming method |
| JP4700568B2 (en) * | 2006-07-06 | 2011-06-15 | 新日本製鐵株式会社 | Multi-stage press forming method with excellent shape freezing property |
| JP2010227995A (en) | 2009-03-30 | 2010-10-14 | Kobe Steel Ltd | Method of forming curved channel member |
| JP5281519B2 (en) * | 2009-08-26 | 2013-09-04 | トヨタ自動車株式会社 | Press forming method |
| JP5797594B2 (en) * | 2012-03-22 | 2015-10-21 | 株式会社豊田中央研究所 | Press forming analysis system and program thereof |
| JP2014039957A (en) | 2012-07-27 | 2014-03-06 | Nisshin Steel Co Ltd | Press working method of flanged molding member, and bending tool for use in the method |
| RU2610191C2 (en) * | 2012-09-12 | 2017-02-08 | Ниппон Стил Энд Сумитомо Метал Корпорейшн | Method of curvilinear profile part making and car body framed structural element |
| KR101718269B1 (en) * | 2013-01-07 | 2017-03-20 | 신닛테츠스미킨 카부시키카이샤 | Method for producing press-molded article |
| JP5569609B1 (en) * | 2013-02-28 | 2014-08-13 | Ｊｆｅスチール株式会社 | Press forming method |
| CN203380280U (en) * | 2013-08-06 | 2014-01-08 | 昆山达亚汽车零部件有限公司 | Crease-resistant stamping die |
-
2014
- 2014-12-03 JP JP2014244755A patent/JP5967386B2/en active Active
-
2015
- 2015-11-11 WO PCT/JP2015/081705 patent/WO2016088519A1/en active Application Filing
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- 2015-11-11 KR KR1020177014999A patent/KR102018964B1/en active IP Right Grant
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| Publication number | Publication date |
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| CN107000021A (en) | 2017-08-01 |
| KR102018964B1 (en) | 2019-09-05 |
| WO2016088519A1 (en) | 2016-06-09 |
| JP5967386B2 (en) | 2016-08-10 |
| KR20170081215A (en) | 2017-07-11 |
| MX2017007025A (en) | 2017-08-24 |
| JP2016107283A (en) | 2016-06-20 |
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