WO2014132545A1 - プレス成形方法 - Google Patents
プレス成形方法 Download PDFInfo
- Publication number
- WO2014132545A1 WO2014132545A1 PCT/JP2013/085227 JP2013085227W WO2014132545A1 WO 2014132545 A1 WO2014132545 A1 WO 2014132545A1 JP 2013085227 W JP2013085227 W JP 2013085227W WO 2014132545 A1 WO2014132545 A1 WO 2014132545A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flange
- molding
- valley
- forming
- punch
- Prior art date
Links
Images
Classifications
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
-
- 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
-
- 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
Definitions
- the present invention relates to a press forming method for forming a shrink flange by press forming a metal sheet.
- shrink flange molding When the flange part is formed on the metal plate by press molding along the convex outer peripheral edge with a part of the outer edge protruding outward, and the end of the convex part of the flange part shrinks and deforms There is. This is called shrink flange molding.
- mild shrinkage flange molding the phenomenon is limited to a phenomenon in which the plate thickness increases.
- the shrinkage flange molding amount increases, wrinkles occur during the molding, and the wrinkles remain after molding.
- Patent Document 1 discloses a method of facilitating compressive forming of a contracted flange portion by providing a through hole in the contracted flange portion in advance.
- Patent Document 2 discloses that a wrinkle is formed by press-molding a part near the end of a part to be subjected to shrink flange molding at least in the initial stage of molding by crushing with a U-shaped block.
- Patent Document 3 discloses a method of dispersing deformation by devising the shape of the bending die tip.
- the present invention has been made to solve the various problems as described above, and provides a press molding method capable of fundamentally solving the problem of wrinkling in shrinkage flange molding without adversely affecting the final product. For the purpose.
- the press molding method according to the present invention includes a top plate portion having a convex outer periphery in which a part of the outer periphery protrudes outward, and a flange portion bent and formed along the convex outer periphery of the top plate portion.
- the first molding step includes sandwiching a portion to be a top plate portion in a blank material between a pad and a first die and forming a flange portion in the blank material. Is formed by the first punch, and in the second forming step, a portion to be the top plate portion in the intermediate shape component is sandwiched between the pad and the second die, and the shape including the valley portion in the intermediate shape component is met. Forming with the second punch.
- FIG. 1A is an explanatory view illustrating a first forming step of a press forming method according to an embodiment of the present invention.
- FIG. 1B is an explanatory diagram for explaining an intermediate shape part by a first forming step of the press forming method according to the embodiment of the present invention.
- FIG. 1C is an explanatory diagram illustrating a second molding step of the press molding method according to one embodiment of the present invention.
- FIG. 1D is an explanatory diagram illustrating a target shape in a second molding step of the press molding method according to an embodiment of the present invention.
- FIG. 2 is an explanatory view of a molded part molded by the press molding method according to one embodiment of the present invention.
- FIG. 3 is an explanatory diagram of an intermediate-shaped part molded by the first molding step of the press molding method according to one embodiment of the present invention.
- Drawing 4 is an explanatory view of the 1st punch used for the 1st forming process of the press forming method concerning one embodiment of the present invention.
- Drawing 5 is an explanatory view of the 2nd punch used for the 2nd forming process of the press forming method concerning one embodiment of the present invention.
- FIG. 6 is a contour diagram showing the plate thickness increase rate in the second forming step of the press forming method according to the embodiment of the present invention.
- FIG. 7 is a contour diagram showing the plate thickness increase rate when formed by a conventional press forming method.
- FIG. 8 is an explanatory diagram of a second punch used in the second molding step of the press molding method according to another embodiment of the present invention.
- FIG. 9 is an explanatory view of a molded part in the embodiment of the present invention.
- FIG. 10 is an explanatory diagram of the first punch in the embodiment of the present invention.
- FIG. 11 is an explanatory diagram of the second punch in the embodiment of the present invention.
- FIG. 12 is an explanatory diagram of the second punch in the embodiment of the present invention.
- FIG. 13 is a graph for explaining the effect of the embodiment of the present invention.
- FIG. 14 is an explanatory diagram of the first punch used in the first molding step of the press molding method according to another embodiment of the present invention.
- FIG. 15 is an explanatory diagram of the first punch used in the first molding step of the press molding method according to another embodiment of the present invention.
- FIG. 16 is an explanatory diagram of the first punch used in the first molding step of the press molding method according to another embodiment of the present invention.
- FIG. 17 is an explanatory diagram of a second punch used in the second molding step of the press molding method according to another embodiment of the present invention.
- FIG. 18 is a contour diagram showing the plate thickness increase rate in the second forming step of the press forming method according to the embodiment of the present invention for a narrow blank material.
- FIG. 19 is a contour diagram showing a plate thickness increase rate by a conventional press forming method for a narrow blank material.
- FIG. 20 is a contour diagram showing the plate thickness increase rate in the second forming step of the press forming method according to the embodiment of the present invention for a narrow blank having a high flange height.
- FIG. 21 is a contour diagram showing a plate thickness increase rate by a conventional press forming method for a narrow blank having a high flange height.
- FIG. 22A is an explanatory view illustrating the mechanism of the press molding method according to the present invention.
- FIG. 22B is an explanatory view illustrating the mechanism of the press molding method according to the present invention.
- FIG. 23 is an explanatory view for explaining the mechanism of the press molding method according to the present invention.
- FIG. 24A is an explanatory view illustrating the mechanism of the press molding method according to the present invention.
- FIG. 24B is an explanatory view illustrating the mechanism of the press molding method according to the present invention.
- FIG. 25 is an explanatory view for explaining the mechanism of the press molding method according to the present invention.
- FIG. 26 is an explanatory view for explaining the mechanism of the press molding method according to the present invention.
- the inventors diligently studied a fundamental solution for mitigating the concentration of shrinkage at the convex bent end portion of the flange portion in shrinkage flange molding.
- shrinkage and stretch occur at the convex bent end portion of the flange portion at the same time and cancel each other, large shrinkage deformation is caused at the convex bent end portion.
- wrinkles would not occur at the site without causing any wrinkles.
- the inventor examined the press molding method in which shrinkage
- FIG. 22A is a diagram showing a flat first blank 50.
- a broken line shows the 1st bending line 53 for shape
- the portion of the first notch 55 in the first flange portion 51 is formed. overlap. Accordingly, when the first blank 55 does not have the first notch 55 and the plates are connected, in the first flange portion 51, a shrinkage occurs in a portion indicated by hatching in FIG. 23, and this shrinkage is not absorbed by the increase in the plate thickness. Wrinkles occur. This is shrink flange molding.
- FIG. 24A is a diagram showing a second blank 57 in which a rectangular plate is formed into a valley shape at the center thereof.
- a broken line shows the 2nd bending line 61 for shape
- the second flange 57 is bent along the second fold line 61 to form the second flange portion 59, a part of the blank is formed at the center of the second flange portion 59 as shown in FIG. 24B. Opens. Accordingly, when the second blank 63 has no second notch 63 and is connected to the plate, the second flange portion 59 is stretched at a portion indicated by hatching in FIG. 25, and if this stretch is large, a crack is generated. To do. This is stretch flange molding.
- the flat first blank 50 is bent along the convex first fold line 53 in which a part of the outer peripheral edge protrudes outward.
- the bent end portion of the first flange portion 51 is contracted.
- the valley-shaped second blank 57 is bent along the folding line 61 that crosses the valley along the valley shape to form the second flange portion 59, the second flange portion 59 is formed. Elongation occurs at the bent end of the portion 59.
- the flange portion has two qualities: a first fold line 53 that is a convex shape protruding outward as shown in FIG. 23, and a second fold line 61 that follows the valley shape shown in FIG. What is necessary is just to be bent along a fold line and shape
- FIG. 26 is a diagram showing an example of such an intermediate shape.
- This intermediate shape 65 is a shape including a top plate portion 69, a vertical wall portion 71, and a trough portion 73.
- the top plate portion 69 has a convex outer peripheral edge 67 in which a part of the outer peripheral edge protrudes outward.
- the vertical wall portion 71 is bent along the convex outer peripheral edge 67 of the top plate portion 69 and becomes a part of the flange portion.
- the valley-shaped portion 73 is bent outward from the vertical wall portion 71 and is concave on the top plate portion 69 side.
- the third fold line 75 formed on the vertical wall portion 71 is a fold line having the two characteristics described above. That is, since the intermediate shape 65 protrudes outward as viewed from above, the third fold line 75 has the same shape as the first fold line 53 of FIG. Further, since the intermediate shape 65 has a valley shape when viewed from the front, the third fold line 75 has the same shape as the second fold line 61 of FIG.
- the valley shape portion 73 is formed.
- the shrinkage shown in FIG. 23 and the elongation shown in FIG. 25 occur simultaneously.
- shrinkage and elongation are offset, and wrinkles due to shrinkage and cracks due to elongation do not occur.
- shrinkage occurs in the center of the vertical wall portion 71 (convex convex portion).
- the present invention has been made on the basis of the above knowledge, and specifically comprises the following configuration.
- the press molding method according to an embodiment of the present invention is a press molding method for press molding the molded part 1 shown in FIG.
- the molded part 1 includes a top plate part 5 having a convex outer peripheral edge 3 in which a part of the outer peripheral edge protrudes outward, and a flange part formed by bending along the convex outer peripheral edge 3 of the top plate part 5. 7.
- the press molding method of the present embodiment includes a first molding step S1 and a second molding step S2.
- molding process S1 (FIG. 1A and FIG. 1B)
- the vertical wall part 11 used as a part of flange part 7, and outward from this vertical wall part 11
- the intermediate shape part 15 (refer FIG. 1B and FIG. 3) including the trough-shaped part 13 bent toward the bottom and recessed toward the bottom is formed.
- molding process S2 FIG. 1C and FIG.
- molding process S1 contains the valley-shaped part 13. Is bent along a boundary line 19 (see FIG. 3) with the vertical wall portion 11 to form the flange portion 7 (see FIG. 1D).
- the molded part (part) 1, the first molding step S1, and the second molding step S2, which are target shapes of the press molding method of the present embodiment, will be described in detail.
- a molded part 1 that is a target shape of press molding in the present embodiment includes a top plate portion 5 having a convex outer peripheral edge 3 in which a part of the outer peripheral edge protrudes outward, and a top plate. And a flange portion 7 that is bent along the convex outer peripheral edge 3 of the portion 5.
- shrinkage concentrates on the bent end portion 21 of the flange portion 7, and wrinkles are likely to occur in the portion.
- the first molding step S1 of the present embodiment is a step in which the intermediate shape part 15 (see FIG. 3) is molded.
- the intermediate shape component 15 includes a vertical wall portion 11 that is a part of the flange portion 7 and a portion of the blank material 9 where the flange portion 7 is formed.
- the valley-shaped part 13 which becomes concave on the part 5 side is included.
- a first die 23 serving as a lower die, a first punch 17 descending from above the die, and a pad for pressing the blank material 9 are used.
- (pad) 25 is used.
- the first punch 17 includes a flat part 27, a vertical wall forming part 29, and a valley forming part 31.
- the flat portion 27 is located at a portion corresponding to the top plate portion 5 of the molded part 1.
- the vertical wall forming portion 29 forms the vertical wall portion 11 extending downward along the convex outer peripheral edge 3 of the intermediate shape part 15.
- the valley forming portion 31 forms the valley portion 13 that extends in the horizontal direction from the vertical wall forming portion 29 and is concave upward.
- the first die 23 has a shape corresponding to the shape of each molding part of the first punch 17. It is desirable that the pressing force with which the pad 25 presses the blank material 9 against the first die 23 is a sufficiently strong pressure so that the top plate portion 5 is not deformed during molding by the lowering of the first punch 17.
- the first molding step S1 will be described more specifically.
- the first punch 17 is lowered toward the first die 23 in a state where the blank material 9 is sandwiched between the first die 23 and the pad 25.
- the center of the first punch 17 in the valley forming portion 31 comes into contact with the blank material 9.
- the valley-shaped portion 13 and the vertical wall portion 11 are simultaneously formed in order from the center of the blank material 9.
- the valley portion 13 is formed by the first forming step S1, and the boundary line 19 with the valley portion 13 is formed on the vertical wall portion 11 (see FIG. 3).
- This boundary line 19 has the same property as the third fold line 75 shown in FIG. 26, that is, the property of causing shrinkage and elongation at the bent end portion 21 of the flange portion 7 simultaneously.
- ⁇ Second molding step> In the second molding step S2, as shown in FIG. 1C, the second die 33 and the pad 25 sandwich the intermediate shaped part 15 molded in the first molding step S1, and the second punch 35 forms the valley-shaped portion 13.
- the flange portion 7 is formed by bending the portion including the lower portion along the boundary line 19 (FIG. 3).
- the second punch 35 used in the second molding step S2 has a vertical wall forming portion 29 along the vertical wall portion 11 formed in the first molding step S1.
- the second die 33 (FIG. 1C) has a vertical wall portion having the same shape as the target flange portion 7.
- the shape including the valley portion 13 molded in the first molding step S1 is bent along the boundary line 19 downward.
- both the shrinkage and the elongation act on the lower end of the center of the flange portion 7 and cancel each other. Therefore, the bending does not cause a large shrinkage, and no wrinkles occur.
- FIG. 6 is a contour map showing the distribution of plate thickness after the second forming step S2.
- the plate thickness increase sites were dispersed over a wide area of the flange portion 7, and the plate thickness increase rate was 67% even at the site where the plate thickness increase rate was the largest. This means that the maximum value of the plate thickness increase rate is reduced by the canceling action between the shrinkage and the elongation, and the generation of wrinkles is surely prevented.
- the increase in the thickness of the bent end portion 21 (FIG. 2) of the flange portion 7 is also caused by the method of the present invention because the shrinkage and elongation occurring in the portion do not completely match. is there.
- FIG. 7 is a contour diagram showing the distribution of plate thickness when press-molding is performed by a conventional press-molding method in which shrinkage flange molding is performed in one step.
- FIG. 7 is compared with FIG. 6, in the conventional method (FIG. 7), the portion where the plate thickness change occurs is not dispersed over a wide range of the flange portion 7 as in FIG. You can see that it is concentrated in the place.
- the maximum thickness increase rate in the conventional method shown in FIG. 7 is 196%, which is larger than 67% in the present invention shown in FIG.
- an intermediate shape part 15 is formed which is bent outward from the vertical wall portion 11 and includes a valley-shaped portion 13 which is concave on the top plate portion 5 side.
- a portion including the valley-shaped portion 13 of the intermediate shape part 15 molded in the first molding step S1 is bent and formed along the boundary line 19 with the vertical wall portion 11 to obtain a final shape.
- the flange portion 7 of the molded part 1 is molded.
- the second punch forms a valley along the valley-shaped portion 13 in addition to the vertical wall-shaped portion 29 along the vertical wall portion 11 of the intermediate-shaped component 15 molded in the first molding step S ⁇ b> 1.
- FIG. When the second punch 36 descends along the vertical wall portion 11 formed in the first forming step S ⁇ b> 1, the second punch 36 comes into contact with the shape including the valley portion 13. When the second punch 36 is further lowered, the shape including the valley portion 13 is bent downward from the boundary line 19 with the vertical wall portion 11 to form the target shape.
- Example 10 In order to verify the effect of the present invention, the conventional method and the method of the present invention were verified by analysis using a finite element method.
- the software used for the analysis was LS-DYNA version 971 manufactured by LSTC, and a dynamic explicit method solver was used.
- LS-DYNA version 971 manufactured by LSTC
- a dynamic explicit method solver was used as a material to be processed.
- a high-strength steel sheet having a thickness of 1.2 mm and a tensile strength of 590 MPa was assumed.
- FIG. 9 is a diagram showing the shape of a target molded part.
- Table 1 is a table showing dimensions and the like of each part of the molded part shown in FIG.
- FIG. 10 is a view showing the first punch used in the first molding step of the present invention.
- 11 and 12 are views showing the second punch used in the second molding step.
- Table 2 shows the dimensions of each part of the first punch and the second punch.
- the case where the 2nd punch shown in FIG. 11 was used was made into invention example 1, and the case where the 2nd punch shown in FIG.
- the pressing force by each pad was 196MN, and the molding speed was 2 m / sec.
- FIG. 13 is a diagram showing the maximum thickness increase rate at the bottom dead center of press forming when different press forming methods are performed.
- the conventional example is a press molding method in which shrinkage flange molding is performed in one step, and the comparative example performs flange molding in one step using a punch having the same shape as the second punch 36 shown in FIG.
- This is a press molding method.
- the maximum thickness increase rate was 196% in the conventional example and 87% in the comparative example, whereas it was 67% in the present invention example 1 and 59% in the present invention example 2. It was.
- the press molding method of the present invention it was demonstrated that the maximum plate thickness increase rate is reduced as compared with the conventional example and the comparative example.
- the inclination angle of the valley-shaped portion 13 is set so that the deformation becomes the smallest in consideration of the offset between the shrinkage and the elongation occurring at the bent end portion of the flange portion in relation to the convex portion of the flange portion to be molded. do it.
- the top-plate part 5 of a molded component was flat was demonstrated, the top-plate part 5 of the molded component shape
- the top plate part 5 may have a concave shape having an inclined surface inclined downward toward the center, or conversely, the top plate part 5 has a convex surface having an inclined surface inclined upward toward the center. It may be of a shape.
- the top plate forming portion 39 of the first punch 37 when the top plate portion 5 has a concave shape is a concave shape composed of an inclined surface inclined downward toward the center, and a valley forming portion.
- the inclination angle ⁇ 3 of 31 is preferably smaller than the inclination angle ⁇ 2 when the top plate portion 5 is flat.
- the top plate forming portion 43 of the first punch 41 in the case where the top plate portion 5 has a convex shape upward as shown in FIG. 15, has a convex shape composed of an inclined surface inclined upward toward the center.
- the inclination angle ⁇ 4 of the valley forming portion 31 is desirably larger than the inclination angle ⁇ 2 when the top plate portion 5 is flat.
- the valley portion 13 is formed in a part of the width direction of the blank material 9, but may be formed so as to cover the entire width of the blank material 9.
- FIG. 16 is a view showing the first punch 18 when the valley-shaped portion 13 in the intermediate-shaped component 15 is formed over the entire width of the blank material 9.
- FIG. 17 is a view showing the second punch 35 in this case.
- FIG. 18 is a contour diagram showing the result of the same analysis as in the above-described example for press forming using the first punch 18 shown in FIG. 16 and the second punch 35 shown in FIG.
- FIG. 19 is a contour diagram showing the analysis result of the conventional example.
- the valley-shaped portion 13 is formed over the entire width of the narrow blank 9
- the plate thickness increase rate generated at the bent end portion 21 of the flange portion 7 is determined according to the press molding method of the present invention. As shown in FIG. 19, it was 20%, whereas according to the conventional example, it was 34% as shown in FIG.
- the valley portion 13 is formed over the entire width of the blank member 9
- the flange portion 7 is formed similarly to the case where the valley portion 13 is formed in a part of the width of the blank member 9. It was demonstrated that the rate of increase in the thickness of the bent end portion 21 is reduced.
- part has generate
- FIG. This is because the width of the blank material 9 is narrower than the width of the blank material 9 in which the valley-shaped portion 13 is formed in a part of the width of the above-described embodiment.
- the base portion 22 is easily deformed, and an increase in the plate thickness occurs in the portion. That is, the stress that acts on the bent end portion 21 of the flange portion 7 acts on a portion that is easily deformed, resulting in deformation (increase in plate thickness). This tendency is considered to increase as the height of the flange portion 7 increases. Therefore, an analysis was performed in the case where the height of the flange portion 7 was increased by 5 mm to 30 mm from the embodiment of FIG. 18 and FIG. 19 (flange height 25 mm).
- FIG. 20 is a contour diagram showing the analysis result of the press molding method of the present invention when the height of the flange portion 7 is 30 mm
- FIG. 21 is a contour diagram showing the analysis result of the conventional example.
- the plate thickness increase rate generated at the bent end portion 21 of the flange portion 7 is 14% in both the present invention example and the conventional example, but the plate thickness generated at both end base portions 22 of the flange portion 7.
- the increase rate was 37% in the example of the present invention and 86% in the conventional example.
- the both end base portions 22 of the flange portion 7 have plate thickness increasing portions. It has been demonstrated that the rate of increase is reduced.
- the present invention can be applied to a process of press-molding a metal plate to form a shrink flange. As a result, there is no adverse effect on the final product, and it is possible to fundamentally solve the problem of wrinkling in shrinkage flange molding.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Making Paper Articles (AREA)
Abstract
Description
本実施の形態におけるプレス成形の目標形状である成形部品1は、図2に示すように、外周縁の一部が外方に突出した凸状外周縁3を有する天板部5と、天板部5における凸状外周縁3に沿って曲げ成形されたフランジ部7とを有する。このような形状の成形部品1では、フランジ部7における屈曲端部21に縮みが集中して、当該部位にシワが発生しやすい。
本実施の形態の第1成形工程S1は、中間形状部品15(図3参照)が成形される工程である。中間形状部品15には、ブランク材9におけるフランジ部7が形成される部位に、フランジ部7の一部となる縦壁部11と、縦壁部11から外方に向けて折り曲げられると共に天板部5側に凹となる谷形部13とが含まれる。
第2成形工程S2では、図1Cに示すように、第2ダイ33とパッド25とが、第1成形工程S1で成形された中間形状部品15を挟み、第2パンチ35が谷形部13を含む部位を境界線19(図3)に沿って下方に折り曲げてフランジ部7を成形する。
本発明の効果を検証するため、従来方法と本発明の方法とが有限要素法(finite element method)による解析で検証された。解析に用いられたソフトウエアはLSTC社製のLS-DYNAバージョン971であり、動的陽解法(dynamic explicit method)ソルバー(solver)が用いられた。加工される材料として、板厚が1.2mm、引張り強度(tensile strength)が590MPa級の高張力鋼鈑(high-strength steel sheet)が想定された。図9は、対象とする成形部品の形状を示した図である。また、表1は、図9に示した成形部品の各部の寸法等を示す表である。
S2 第2成形工程
1 成形部品
3 凸状外周縁
5 天板部
7 フランジ部
9 ブランク材
11 縦壁部
13 谷形部
15 中間形状部品
17 第1パンチ
19 境界線
21 屈曲端部
22 両端基部
23 第1ダイ
25 パッド
27 平坦部
29 縦壁成形部
31 谷形成形部
33 第2ダイ
35 第2パンチ
37 第1パンチ
39 天板成形部
41 第1パンチ
43 天板成形部
50 第1ブランク
51 第1フランジ部
53 第1折り曲げ線
55 第1切り込み
57 第2ブランク
59 第2フランジ部
61 第2折り曲げ線
63 第2切り込み
65 中間形状
67 凸状外周縁
69 天板部
71 縦壁部
73 谷形部
75 第3折り曲げ線
Claims (2)
- 外周縁の一部が外方に突出した凸状外周縁を有する天板部と、該天板部における凸状外周縁に沿って曲げ成形されたフランジ部を有する成形部品をプレス成形するプレス成形方法であって、
ブランク材における前記フランジ部が形成される部位に、フランジ部の一部となる縦壁部と、該縦壁部から外方に向けて折り曲げられると共に前記天板部側に凹となる谷形部を含む中間形状部品を成形する第1成形工程と、
該第1成形工程で成形された中間形状部品の前記谷形部を含む部位を曲げ成形してフランジ部を成形する第2成形工程と、を含むプレス成形方法。 - 前記第1成形工程は、ブランク材における天板部となる部位をパッドと第1ダイとで挟持して、前記ブランク材におけるフランジ部となる部位を第1パンチによって成形し、
前記第2成形工程は、中間形状部品における天板部となる部位をパッドと第2ダイとで挟持して、前記中間形状部品における谷形部を含む形状に沿う第2パンチによって成形する請求項1記載のプレス成形方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/648,534 US9833826B2 (en) | 2013-02-28 | 2013-12-27 | Press forming method |
MX2015010294A MX357948B (es) | 2013-02-28 | 2013-12-27 | Metodo de estampacion. |
EP13876639.9A EP2962778B1 (en) | 2013-02-28 | 2013-12-27 | Press forming method |
CN201380069720.7A CN104903019B (zh) | 2013-02-28 | 2013-12-27 | 冲压成型方法 |
KR1020157017842A KR101614755B1 (ko) | 2013-02-28 | 2013-12-27 | 프레스 성형 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013038314A JP5569609B1 (ja) | 2013-02-28 | 2013-02-28 | プレス成形方法 |
JP2013-038314 | 2013-02-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014132545A1 true WO2014132545A1 (ja) | 2014-09-04 |
Family
ID=51427235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/085227 WO2014132545A1 (ja) | 2013-02-28 | 2013-12-27 | プレス成形方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US9833826B2 (ja) |
EP (1) | EP2962778B1 (ja) |
JP (1) | JP5569609B1 (ja) |
KR (1) | KR101614755B1 (ja) |
CN (1) | CN104903019B (ja) |
MX (1) | MX357948B (ja) |
WO (1) | WO2014132545A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5987942B1 (ja) * | 2015-03-18 | 2016-09-07 | Jfeスチール株式会社 | プレス成形金型 |
EP3205519B1 (en) * | 2014-10-10 | 2023-05-10 | Nippon Steel Corporation | Method of production of a joint |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5967386B2 (ja) * | 2014-12-03 | 2016-08-10 | Jfeスチール株式会社 | プレス成形方法およびその方法を用いた部品の製造方法並びにプレス成形装置 |
US20180043413A1 (en) * | 2016-08-12 | 2018-02-15 | Uacj Corporation | Press-forming die |
JP6683269B1 (ja) * | 2019-02-01 | 2020-04-15 | Jfeスチール株式会社 | スプリングバック量変動要因部位特定方法 |
JP7044208B2 (ja) * | 2019-12-18 | 2022-03-30 | 日本製鉄株式会社 | プレス成形品の製造方法およびプレス成形ライン |
JP7537966B2 (ja) | 2020-09-16 | 2024-08-21 | 東プレ株式会社 | プレス成形品の製造方法およびプレス金型 |
CN112828118B (zh) * | 2020-12-30 | 2023-05-23 | 中航贵州飞机有限责任公司 | 具有凸弯边特征零件在橡皮囊成形时起皱现象控制方法 |
CN113319172B (zh) * | 2021-05-11 | 2022-10-28 | 中国第一汽车股份有限公司 | 一种消除高强板冲压件翻边立壁弯曲的方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6127125A (ja) * | 1984-07-17 | 1986-02-06 | Toyota Motor Corp | 絞り成形方法 |
JPS62107827A (ja) * | 1985-11-05 | 1987-05-19 | Nissan Motor Co Ltd | トランクリツドアウタ−パネルの成形方法 |
JPH0739954A (ja) | 1993-07-31 | 1995-02-10 | Press Kogyo Kk | しわ防止措置を施したプレス成形法としわ防止機構 |
JP2004188445A (ja) * | 2002-12-10 | 2004-07-08 | Kobe Steel Ltd | アルミニウム合金板のプレス成形方法 |
JP2007253173A (ja) | 2006-03-22 | 2007-10-04 | Press Kogyo Co Ltd | チャンネル材の加工方法およびチャンネル材 |
JP2010201486A (ja) | 2009-03-05 | 2010-09-16 | Nissan Motor Co Ltd | プレス成形方法およびプレス成形装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1752073A (en) * | 1927-06-16 | 1930-03-25 | Enamel Products Company | Method of making enamel-ware articles |
US3771342A (en) * | 1968-12-31 | 1973-11-13 | Technigaz | Method for manufacturing a corrugated corner piece or the like |
JPH0761507B2 (ja) * | 1986-05-19 | 1995-07-05 | 株式会社東芝 | 絞り型による成形方法 |
JPH01113130A (ja) * | 1987-10-23 | 1989-05-01 | Toyota Motor Corp | 紋りプレス型 |
JPH02205215A (ja) * | 1989-02-01 | 1990-08-15 | Kamakura Sangyo Kk | 建築用パネルのプレスによる製造方法 |
JP2789945B2 (ja) * | 1992-07-14 | 1998-08-27 | 日産自動車株式会社 | プレス加工方法 |
JPH08117879A (ja) * | 1994-08-29 | 1996-05-14 | Toyota Motor Corp | プレス加工方法 |
NL1007527C2 (nl) | 1997-11-12 | 1999-05-17 | Wemo Nederland Bv | Werkwijze en inrichting voor het vormen van een zijwand aan een plaat. |
US20040200256A1 (en) * | 2003-04-11 | 2004-10-14 | Chu Edmund W. | Formed panel and associated method |
JP5073413B2 (ja) | 2007-08-21 | 2012-11-14 | 本田技研工業株式会社 | プレス成形用金型 |
AU2011255898C1 (en) | 2010-05-19 | 2016-12-15 | Nippon Steel Corporation | Method for press-forming l-shaped components |
JP5510533B1 (ja) * | 2012-12-17 | 2014-06-04 | Jfeスチール株式会社 | プレス成形方法 |
-
2013
- 2013-02-28 JP JP2013038314A patent/JP5569609B1/ja active Active
- 2013-12-27 US US14/648,534 patent/US9833826B2/en active Active
- 2013-12-27 EP EP13876639.9A patent/EP2962778B1/en active Active
- 2013-12-27 MX MX2015010294A patent/MX357948B/es active IP Right Grant
- 2013-12-27 CN CN201380069720.7A patent/CN104903019B/zh active Active
- 2013-12-27 WO PCT/JP2013/085227 patent/WO2014132545A1/ja active Application Filing
- 2013-12-27 KR KR1020157017842A patent/KR101614755B1/ko active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6127125A (ja) * | 1984-07-17 | 1986-02-06 | Toyota Motor Corp | 絞り成形方法 |
JPS62107827A (ja) * | 1985-11-05 | 1987-05-19 | Nissan Motor Co Ltd | トランクリツドアウタ−パネルの成形方法 |
JPH0739954A (ja) | 1993-07-31 | 1995-02-10 | Press Kogyo Kk | しわ防止措置を施したプレス成形法としわ防止機構 |
JP2004188445A (ja) * | 2002-12-10 | 2004-07-08 | Kobe Steel Ltd | アルミニウム合金板のプレス成形方法 |
JP2007253173A (ja) | 2006-03-22 | 2007-10-04 | Press Kogyo Co Ltd | チャンネル材の加工方法およびチャンネル材 |
JP2010201486A (ja) | 2009-03-05 | 2010-09-16 | Nissan Motor Co Ltd | プレス成形方法およびプレス成形装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2962778A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3205519B1 (en) * | 2014-10-10 | 2023-05-10 | Nippon Steel Corporation | Method of production of a joint |
JP5987942B1 (ja) * | 2015-03-18 | 2016-09-07 | Jfeスチール株式会社 | プレス成形金型 |
WO2016147703A1 (ja) * | 2015-03-18 | 2016-09-22 | Jfeスチール株式会社 | プレス成形(press forming)方法及びプレス成形金型(tool of press forming) |
US10500624B2 (en) | 2015-03-18 | 2019-12-10 | Jfe Steel Corporation | Press forming method and tool of press forming |
Also Published As
Publication number | Publication date |
---|---|
MX357948B (es) | 2018-07-31 |
MX2015010294A (es) | 2015-10-26 |
EP2962778A1 (en) | 2016-01-06 |
US20150290694A1 (en) | 2015-10-15 |
JP2014161911A (ja) | 2014-09-08 |
KR20150093205A (ko) | 2015-08-17 |
EP2962778B1 (en) | 2017-03-01 |
KR101614755B1 (ko) | 2016-04-22 |
CN104903019B (zh) | 2017-04-05 |
EP2962778A4 (en) | 2016-03-02 |
JP5569609B1 (ja) | 2014-08-13 |
US9833826B2 (en) | 2017-12-05 |
CN104903019A (zh) | 2015-09-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014132545A1 (ja) | プレス成形方法 | |
KR101652877B1 (ko) | 프레스 성형 방법 | |
RU2610191C2 (ru) | Способ изготовления детали с криволинейным профилем и каркасный конструктивный элемент корпуса кузова автомобиля | |
KR101853573B1 (ko) | 프레스 성형 방법과 그 방법에 이용되는 예비 성형 형상의 결정 방법 | |
CN107708884B (zh) | 拉伸凸缘成型部件的制造方法 | |
JP6631759B1 (ja) | プレス部品の製造方法、プレス成形装置及びプレス成形用の金属板 | |
CN109562427B (zh) | 冲压成型品的制造方法 | |
CN110087791B (zh) | 冲压成形方法 | |
RU2692353C1 (ru) | Способ производства штампованных изделий и производственная линия для них | |
JP6665837B2 (ja) | プレス成形品の製造方法 | |
US20210260640A1 (en) | Method for designing mold shape and method for producing pressed part | |
JP2015131306A (ja) | プレス成形方法 | |
KR101708581B1 (ko) | 입체 가장자리가 형성된 금속 부품의 제조 방법 및 제조용 금형 | |
JP7448464B2 (ja) | 鋼部品の製造方法 | |
WO2016088519A1 (ja) | プレス成形方法およびその方法を用いた部品の製造方法並びにプレス成形装置およびその装置を用いてプレス成形された成形部品 | |
JPWO2019187863A1 (ja) | プレス成形品の設計方法、プレス成形金型、プレス成形品およびプレス成形品の製造方法 | |
JP6907911B2 (ja) | プレス成形品の製造方法 | |
CN115666809A (zh) | 冲压成形方法 | |
JP6319382B2 (ja) | 伸びフランジ成形部品の製造方法 | |
WO2015079791A1 (ja) | プレス成形方法 | |
JP6119716B2 (ja) | プレス成形方法及びプレス成形用金型 | |
JP2023075017A (ja) | プレス成形方法およびプレス成形品の製造方法 | |
KR20210060590A (ko) | 프레스 성형 부품 및 그 제조 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13876639 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14648534 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20157017842 Country of ref document: KR Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2013876639 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2013876639 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2015/010294 Country of ref document: MX |
|
WWE | Wipo information: entry into national phase |
Ref document number: IDP00201504955 Country of ref document: ID |
|
NENP | Non-entry into the national phase |
Ref country code: DE |