JP6672932B2 - Method and apparatus for manufacturing pressed part having hat cross section - Google Patents

Description

  The present invention relates to a method and an apparatus for manufacturing a pressed part having a hat cross section.

  For example, like a front side member, a cross member, an A pillar, and a B pillar, a top plate, two convex ridge lines continuous with the top plate, two vertical walls respectively continuous with the two convex ridge lines, and two vertical walls. A pressed part having a hat cross-section (hereinafter also referred to as a “hat cross-section part”) constituted by two concave ridge lines continuous with each other and two flanges respectively continuous with the two concave ridge lines is used for an automobile body. It is known as a structural member constituting a skeleton.

  In addition, as disclosed in Patent Documents 1 to 4, for example, a hat cross-section component is often formed by performing press working (drawing) or the like on a blank (for example, a steel plate) as a material (see). .

The blank (steel plate), which is the material of the hat cross-section parts, has been strengthened in order to reduce CO ₂ emissions and improve collision safety by reducing the body weight. In recent years, a high-strength steel plate having a tensile strength of 590 MPa or more or 980 MPa or more is used as a blank.

  However, the formability of the blank decreases as the strength of the blank increases. For this reason, if the hat cross-sectional component has a relatively complicated shape (for example, a shape curved in the longitudinal direction such as a T-shape seen below the B-pillar or an L-shape seen below the A-pillar), Cracks occur at the part where the stretch flange is formed, or wrinkles occur at the part where the shrink flange is formed, and the part cannot be formed into a desired shape.

  According to Patent Document 5, the applicant has disclosed a bending blade having a forming surface for pressing both side portions of a blank and having an opening, and a bending blade that is disposed to face the opening of the bending blade and is disposed inside the opening during mold clamping. A punch die having a forming surface for pressing the central portion of the blank, and a forming surface which is disposed inside the opening formed in the bending blade and presses and clamps the central portion of the blank between the punch die and the die during clamping. The movable surface, which is a molding surface corresponding to the molding surface, is disposed to face the bending blade, and the molding surface that presses and clamps both sides of the blank between the bending blade and the bending blade during clamping is the molding surface of the bending blade. Curving in the longitudinal direction, comprising a blank holder with a corresponding molding surface, and a pressure limiting device that limits the molded hat cross-section part from being pressed between the movable pad and the blank holder during release. I Hat cross section part of the manufacturing apparatus disclosed.

  The pressure limiting device disclosed in Patent Document 5 needs to lock the movable pad and the blank holder when releasing the hat-shaped cross-section part curved in the longitudinal direction. (A vertical direction) is configured to include a holder-side restricting portion that mechanically restricts movement in the vertical direction, a control portion that controls at least one of a stroke and a pressing force of the blank holder pressurizing device, and a molded hat cross-sectional part is formed. Prevents simultaneous pressurization from the movable pad and the blank holder. Thereby, it is possible to prevent the hat-shaped cross-section part curved in the longitudinal direction from being damaged and take it out of the mold.

JP 2003-103306 A JP-A-2004-154859 JP 2006-015404 A JP 2008-307557 A International Publication No. WO 2015/046023 pamphlet

  In order to actually implement the invention disclosed in Patent Document 5 on an industrial scale, a press machine with a locking mechanism having a locking function that does not raise the blank holder even when the upper die rises after the molding bottom dead center is used. It is necessary to use a mold having an air-driven locking mechanism having a locking function.

  However, in order to use the former press having a locking mechanism, it is necessary to newly provide a locking mechanism in a press having no locking function, and the production cost cannot be denied. Further, since there is no transfer press that can be individually locked at each station, it is difficult to apply the former press with a locking mechanism to a transfer press, and there is a possibility that productivity may be reduced.

  Further, the latter mold having an air-driven locking mechanism has a low production efficiency, and cannot increase the number of products that can be manufactured in one minute. Furthermore, it is necessary to connect an air pipe to the press machine, and in some cases, additionally provide electric control, which increases the manufacturing cost and reduces the workability of exchanging press dies, thereby lowering productivity.

  As described above, with the conventional technology, it is not easy to actually implement the invention disclosed in Patent Document 5 on an industrial scale, and improvement is desired.

  The present invention has been made in view of this problem of the related art, and has a relatively complicated shape (for example, a B pillar) capable of actually implementing the invention disclosed in Patent Document 5 on an industrial scale. It is an object of the present invention to provide a manufacturing method and a manufacturing apparatus for a hat cross-sectional component having a T-shaped shape seen at a lower portion, and an L-shaped shape seen at a lower portion of an A-pillar, and the like.

The present invention includes a first die provided on a press bolster, and a second die provided on a press slide, and performs a pressing process on a blank having a tensile strength of 590 to 1600 MPa to form a top plate. And, two convex ridge lines continuous with the top plate, two vertical walls respectively continuous with the two convex ridge lines, two concave ridge lines respectively continuous with the two vertical walls, and two concave ridge lines An apparatus for manufacturing a pressed part having a hat cross section constituted by two continuous flanges,
The first mold is
A punch die fixedly disposed on the press bolster,
The joint link is reciprocally movable with respect to the press bolster and is disposed outside the punch die, and pivotably supports a joint link to which a turning force directed to the outside of the mold is provided. A blank holder urged in a direction toward the second mold and urged in a direction toward the first mold by a press molding load;
The second mold is
The press machine slide is reciprocally movable in a direction toward the first mold, is urged in a direction toward the first mold, and is formed together with the punch die on the top plate in the blank. A movable pad that holds the part,
Is placed on the outside of the movable pad, the bending blade clamping the part to be molded together with the blank holder to the two flanges in the blank,
A catcher that is arranged outside the bending blade, reciprocates integrally with the movable pad, and can be locked to the joint link at a molded bottom dead center,
The first mold of the second mold is disposed outside the catcher, is reciprocally movable in a direction toward the first mold, and is urged in a direction toward the first mold. With the approach to the mold, the joint link is turned toward the inside of the mold to lock the joint link and the catcher at the molding bottom dead center, and the movable pad is used as a top plate in the pressed part. After leaving from the outer link having an outer cam having a cam shape for releasing the engagement between the joint link and the catcher,
The joint link is a device for manufacturing a pressed part having a hat cross section, wherein the joint pad bears a load applied to the top plate of the pressed part while being locked to the catcher.

From another viewpoint, the present invention provides, using the manufacturing apparatus according to the present invention, a top plate, two convex ridge lines continuous with the top plate, and two vertical walls respectively continuous with the two convex ridge lines. A method for manufacturing a pressed part having a hat cross section constituted by two concave ridge lines respectively continuous with the two vertical walls and two flanges respectively continuous with the two concave ridge lines,
A blank having a tensile strength of 590 to 1600 MPa is arranged between a punch die and a blank holder, a movable pad and a bending blade,
A portion of the blank formed on the top plate is pressed against the punch die by the movable pad and clamped, and a portion of the blank that is outside the portion formed on the top plate and formed on the flange is included. In the state where the part is pressed against the bending blade with the blank holder and pinched,
By relatively moving the bending blade, the catcher and the outer cam in the direction of the press bolster, the blank is pressed, and the outer cam pivots the joint link toward the inside of the mold.
The bending blade, the catcher, and the outer cam are further relatively moved in the direction of the press bolster, and at the forming bottom dead center, the blank is formed into the pressed part, and the outer cam is used to form the joint link. Locking the joint link and the catcher while restraining rotation, the movable pad bears the pressing force applied to the top plate of the pressed part,
While the second mold moves in a direction away from the first mold after the molding bottom dead center, the movable pad maintains the engagement between the joint link and the catcher so that the movable pad is pressed. The pressure applied to the top plate at
After the movable pad is separated from the top plate of the pressed part, the engagement between the joint link and the catcher is released,
A method of manufacturing a pressed part, comprising removing the pressed part from the first mold after a top dead center of molding.

  In these inventions, the top plate of the pressed component has a substantially L-shaped outer shape having one curved portion and a line symmetry with the substantially L shape in a plan view in a direction orthogonal to the top plate. It is desirable to have a substantially inverted L-shaped profile having one curved portion or a substantially T-shaped profile having two curved portions.

  In the present invention, it is preferable that the blank is a pre-processed metal plate.

  In the present invention, it is preferable that the blank is made of a high-strength steel plate having a thickness of 0.8 to 3.2 mm.

  Furthermore, in these inventions, the width of the top plate is 30 to 400 mm in plan view in a direction orthogonal to the top plate, and the height of the vertical wall is in a direction parallel to the top plate. It is desirable that the curvature on the inner peripheral side of the curved portion be 300 mm or less in a side view and 5 mm or more in a plan view in a direction orthogonal to the top plate.

  According to the present invention, the tensile strength having a relatively complicated shape (for example, a shape curved in the longitudinal direction such as a T-shape seen under the B-pillar or an L-shape seen under the A-pillar) is obtained. Hat cross-section parts made of a high-strength material of 590 to 1600 MPa can be produced without wrinkles or cracks and with good yield, and further, without deforming the press-formed product by the pressing force of the movable pad when the mold is opened after press-forming. It can be manufactured and the invention disclosed by US Pat.

FIG. 1 is an explanatory view showing a pressed part manufactured according to the present invention. FIG. 2 is an explanatory diagram showing the configuration of the manufacturing apparatus according to the present invention. FIG. 3 is an explanatory diagram showing an operation of the manufacturing apparatus according to the present invention before press molding is started (molding top dead center). FIG. 4 is an explanatory diagram showing the operation of the manufacturing apparatus according to the present invention at the start of press molding (at the time of blank hold). FIG. 5 is an explanatory view showing the operation of the manufacturing apparatus according to the present invention at the time of press molding (at the start of the locking operation). FIG. 6 is an explanatory diagram showing the operation of the manufacturing apparatus according to the present invention when press molding is completed (bottom dead center of molding). FIG. 7 is an explanatory diagram showing the operation of the manufacturing apparatus according to the present invention when press molding is completed (bottom dead center of molding). FIG. 8 is an explanatory diagram showing the operation of the manufacturing apparatus according to the present invention during release (while the press slide is being lifted). FIG. 9 is an explanatory view showing the operation of the manufacturing apparatus according to the present invention during release (while the press slide is being lifted). FIG. 10 is an explanatory diagram showing the operation of the manufacturing apparatus according to the present invention at the end of press molding (top dead center of molding).

  The present invention will be described with reference to the accompanying drawings.

1. Pressed part 10 manufactured according to the present invention
FIG. 1 is an explanatory view showing a pressed part 10 manufactured according to the present invention.

  The pressed part 10 is manufactured by performing press working on a blank having a tensile strength of 590 to 1600 MPa.

  The blank is exemplified to have a plate thickness of 0.8 to 3.2 mm. The blank may be preliminarily subjected to light pre-processing such as embossing.

  The pressed part 10 has a hat cross section (hat-shaped cross section). The hat cross section is constituted by the top plate 11, two convex ridge lines 14a and 14b, two vertical walls 12a and 12b, two concave ridge lines 15a and 15b, and two flanges 13a and 13b. The two ridge lines 14 a and 14 b are continuous with the top plate 11. The two vertical walls 12a and 12b are respectively continuous with the two convex ridge lines 14a and 14b. The two concave ridge lines 15a, 15b are respectively continuous with the two vertical walls 12a, 12b. Further, the two flanges 13a, 13b are respectively continuous with the two concave ridge lines 15a, 15b.

  As shown in FIG. 1, the pressed part 10 has two curved portions that bend in the height direction of the vertical walls 12 a and 12 b in a side view parallel to the top plate 11, and has a curved portion having a shape shown in FIG. 1. However, the pressed component 10 may have a substantially L-shaped outer shape having one curved portion in which the top plate 11 bends in a plan view in a direction orthogonal to the top plate 11. It may have a substantially inverted L-shaped outer shape having one curved portion which is line-symmetric with the substantially L-shape, or the top plate 11 may be viewed in a plan view in a direction orthogonal to the top plate 11. It may have a substantially T-shaped outer shape having two curved portions that bend in the shape.

  The reason for this is that the blank has a tensile strength of 590 MPa or more, and if the pressed part 10 has a curved portion, that is, if the blank has a relatively complicated shape, cracks may occur at the part where the stretch flange is formed. The reason for this is that the present invention is meaningful because wrinkles are likely to be generated at the portion where the shrink flange is formed.

  Further, the width of the top plate 11 of the pressed component 10 is preferably 30 to 400 mm in plan view in a direction orthogonal to the top plate 11, and the height of the vertical walls 12 a and 12 b is parallel to the top plate 11. It is preferably 300 mm or less in a side view in the direction, or the curvature of the inner peripheral side of the curved portion is preferably 5 mm or more in a plan view in a direction perpendicular to the top plate 11. If the content is outside these ranges, it is difficult to produce the pressed part 10 without causing cracks or wrinkles according to the present invention.

  The pressed part 10 manufactured according to the present invention is configured as described above. Next, a manufacturing apparatus according to the present invention will be described.

2. Manufacturing apparatus 20 according to the present invention
FIG. 2 is an explanatory diagram illustrating a configuration of the manufacturing apparatus 20 according to the present invention. In addition, since the manufacturing apparatus 20 is symmetrical in FIGS. 2 to 10, the reference numerals of the respective parts in FIGS.

  The manufacturing apparatus 20 according to the present invention includes a first mold 21 and a second mold 31. In the manufacturing apparatus 20, the first mold 21 is a lower mold and the second mold 31 is an upper mold. Conversely, the first mold 21 is an upper mold and the second mold 31 is an upper mold. May be a lower mold. Hereinafter, the first mold 21 is referred to as a lower mold 21 and the second mold 31 is referred to as an upper mold.

  The lower die 21 is provided on a press bolster 22, and the upper die 31 is provided on a press slide 32. Less than. The lower mold 21 and the upper mold 31 will be described sequentially.

(2-1) Lower mold 21
The lower mold 21 has a punch die 23 and a blank holder 24.

  The punch die 23 is fixedly arranged on the bolster 22 of the press. The punch die 23 has an outer shape that matches the inner shape of the pressed component 10.

  The blank holder 24 is disposed reciprocally with respect to the press bolster 22 and outside the punch die 23. The blank holder 24 pivotably supports a joint link 25 to which a pivoting force directed to the outside of the mold is applied by a spring (not shown). The joint link 25 has a roller-shaped roller follower 25a at an end on the side of the upper die 31, and a bearing 25b at the other end. The blank holder 24 pivotally supports the joint link 25 via a bearing 25b. The joint link 25 is stopped at the position (open end) shown in FIG. 1 by a turning force directed outward of the mold by a spring (not shown).

  The blank holder 24 is urged in the direction toward the upper mold 31 by the press die cushion force F1 generated by the press machine die cushion, and is also urged in the direction toward the lower mold 21 by the press forming load during press forming. Is done.

(2-2) Upper die 31
The upper die 31 has a movable pad 33, a bending blade 34, a catcher 35, and an outer cam 36.

  The movable pad 33 is disposed on the press slide 32 so as to be reciprocally movable in a direction toward the lower mold 21. The movable pad 33 is urged in a direction toward the lower mold 21 by a plurality of gas springs 37 incorporated in the press slide 32.

  The movable pad 33, together with the punch die 23, sandwiches a portion 40-1 formed on the top plate 11 of the blank 40.

  The bending blade 34 is fixed to the outside of the movable pad 33 and is arranged on the press slide 32. The bending blade 34 has an inner surface shape that matches the outer surface shape of the pressed part 10. The bending blade 34 sandwiches the portion 40-2 formed on the two flanges 13a and 13b of the blank 40 together with the punch die 23.

  The catcher 35 is fixed to the outside of the bending blade 34 and is arranged on the press slide 32. The catcher 35 moves up and down (reciprocates) integrally with the movable pad 33 and can be locked to the roller follower 25a of the joint link 25 at the formed bottom dead center as shown in FIGS.

  The outer cam 36 is arranged on the press slide 32 so as to be located outside the catcher 35. The outer cam 36 is arranged so as to be able to move up and down (reciprocate) in the direction toward the lower mold 21. The outer cam 36 is urged in a direction toward the pressurized lower mold 21 by a spring or gas spring force F2. As the upper mold 31 approaches the lower mold 21, the outer link 36 moves the joint link 25 around the bearing 25 b as a center of rotation. The movable link 33 is turned toward the inside of the mold to lock the joint link 25 and the catcher 35 at the bottom dead center of the molding, and after the movable pad 33 is separated from the top plate 11 of the press part 10, the joint link 25 and the catcher 35 Has a cam shape 36a that can release the lock of the cam.

  The joint link 25 bears a load that the movable pad 33 applies to the top plate 11 of the formed pressed part 10 while being locked to the catcher 35.

  The manufacturing apparatus 20 according to the present invention is configured as described above.

3. Manufacturing Method According to the Present Invention Next, a manufacturing method according to the present invention for manufacturing the pressed part 10 using the manufacturing apparatus 20 will be described.

  FIG. 3 is an explanatory view showing the operation of the manufacturing apparatus according to the present invention before the start of press molding (top dead center of molding), and FIG. 4 is the manufacturing apparatus according to the present invention at the start of press molding (blank hold). FIG. 5 is an explanatory diagram showing the operation of the manufacturing apparatus according to the present invention at the time of press molding (at the start of the locking operation), and FIG. FIG. 7 is an explanatory view showing the operation of the manufacturing apparatus according to the present invention at the point (point), and FIG. 7 is an explanatory view showing the operation of the manufacturing apparatus according to the present invention at the time of completion of the press molding (bottom dead center of molding). FIG. 9 is an explanatory view showing the operation of the manufacturing apparatus according to the present invention during release (during press-up slide elevating), and FIG. 9 shows the manufacturing apparatus according to the present invention during release (during press-up slide up). FIG. FIG 10 is an explanatory diagram showing the operation of the manufacturing apparatus according to the present invention in the press molding ends (forming the top dead center).

  3 to 10 show the operation of the manufacturing apparatus 20 shown in FIG. 2 over time, the reference numerals in FIGS. 3 to 10 are assigned only to those related to the description of the drawing, and the other reference numerals are used. Is omitted.

  As shown in FIG. 3, a blank 40 is arranged between the punch die 23 and the blank holder 24 and the movable pad 33 and the bending blade 34. At this time, the movable pad 33 is located at the lower end, the outer cam 36 is located at the lower end, the joint link 25 is located at the open end, and the blank holder 24 is located at the upper end.

  Next, as shown in FIG. 4, when the press slide 32 descends, the portion 40-1 formed on the top plate 11 of the blank 40 is pressed against the punch die 23 by the movable pad 33, and the blank 40 is held. In a state in which a portion outside the portion 40-1 formed on the top plate 11 and including the portions 40-2 formed on the flanges 13a and 13b of the pressed part 10 is pressed against the bending blade 34 by the blank holder 24 and clamped. (At the start of press molding, blank hold).

  At this time, the movable pad 33 is located at the lower end, the outer cam 36 is located at the upper end, the joint link 25 is located at the open end, and the blank holder 24 is located at the upper end.

  Next, as shown in FIG. 5, the press machine slide 32 keeps descending, and the bending blade 34, the catcher 35 and the outer cam 36 are relatively moved in the direction of the press machine bolster 22 to press the blank 40. At the same time, the joint link 25 is turned toward the inside of the mold by the outer cam 36.

  At this time, the movable pad 33, the outer cam 36, the joint link 25, and the blank holder 24 are all located at the intermediate ends.

  Next, as shown in FIG. 6, the bending blade 34, the catcher 35, and the outer cam 36 are further relatively moved in the direction of the press bolster 22, and the blank 40 including the pressed part 10 is formed at the bottom dead center of the molding. While being formed into a shape, the joint link 25 and the catcher 35 are locked while restraining the rotation of the joint link 25 by the outer cam 36, and the movable pad 33 bears the pressing force applied to the top plate 11 of the pressed component 10.

  At this time, the movable pad 33 is located at the upper end, the outer cam 36 is located at the lower end, the joint link 25 is located at the closed end, and the blank holder 24 is located at the lower end.

  Next, as shown in FIG. 7, the locking is continued while the movable pad 33 remains at the upper end.

  At this time, the movable pad 33 is located at the lower end, the outer cam 36 is located at the lower end, the joint link 25 is located at the closed end, and the blank holder 24 is located at the lower end.

  Next, as shown in FIG. 8, during the press release after the molding bottom dead center (while the upper die 31 moves in the direction away from the lower die 21), the outer cam 36 connects the joint link 25 to the catcher 35. By maintaining the engagement, the movable pad 33 bears the pressing force applied to the top plate 11 of the pressed component 10 formed.

  At this time, the movable pad 33 remains at the upper end, the outer cam 36 is located at the lower end, the joint link 25 is located at the closed end, and the blank holder 24 is located at the upper end.

  Next, as shown in FIG. 9, the upper die 31 moves further away from the lower die 21, and the movable pad 33 is separated from the top plate 11 of the pressed component 10. Since the outer cam 36 restrains the turning of the joint link 25, the engagement between the joint link 25 and the catcher 35 is maintained.

  At this time, the movable pad 33 is located at the lower end, the outer cam 36 is located at the lower end, the joint link 25 is located at the closed end, and the blank holder 24 is located at the upper end.

  Then, as shown in FIG. 10, the upper die 31 moves further away from the lower die 21 and becomes a top dead center. Since the outer cam 36 separates from the joint link 25 after the movable pad 33 separates from the top plate 11 of the press part 10, the joint link 25 pivots from the closed end to the open end, whereby the joint link 25 and the catcher 35 The engagement is released.

  At this time, the movable pad 33 is located at the lower end, the outer cam 36 is located at the lower end, the joint link 25 is located at the open end, and the blank holder 24 is located at the upper end.

  After the top dead center of the molding, the pressed part 10 is taken out from the lower die 21.

  Thus, according to the present invention, a relatively complicated shape (for example, a shape curved in the longitudinal direction such as a T-shape seen below the B-pillar or an L-shape seen below the A-pillar). The cross-section of a hat made of a high-strength material having a tensile strength of 590 to 1600 MPa has good yield without wrinkles and cracks, and is further formed by pressing force of a movable pad when a mold is opened after press forming. The pressed part 10 can be manufactured without deformation, and the invention disclosed in Patent Document 5 can be actually implemented on an industrial scale.

DESCRIPTION OF SYMBOLS 10 Press component 11 Top plate 12a, 12b Vertical wall 13a, 13b Flange 14a, 14b Convex ridge 15a, 15b Concave ridge 20 Manufacturing apparatus 21 1st die (lower die)
Reference Signs List 22 press bolster 23 punch die 24 blank holder 25 joint link 25a roller follower 25b bearing 31 second die (upper die)
32 press machine slide 33 movable pad 34 bending blade 35 catcher 36 outer cam 36a cam shape 37 gas spring 40 blank 40-1 part formed on top plate 40-2 part formed on flange

Claims (6)

By providing a first die provided on a press bolster and a second die provided on a press slide, and performing press working on a blank having a tensile strength of 590 to 1600 MPa, the top plate and the top Two convex ridge lines continuous with the plate, two vertical walls respectively continuous with the two convex ridge lines, two concave ridge lines respectively continuous with the two vertical walls, and two continuous ridge lines respectively continuous with the two concave ridge lines. An apparatus for manufacturing a pressed part having a hat cross section constituted by two flanges,
The first mold is
A punch die fixedly disposed on the press bolster,
The joint link is reciprocally movable with respect to the press bolster and is arranged outside the punch die, and pivotably supports a joint link to which a turning force directed toward the outside of the mold is provided. A blank holder urged in a direction toward the second mold and urged in a direction toward the first mold by a press molding load;
The second mold is
The press machine slide is reciprocally movable in a direction toward the first mold, is urged in a direction toward the first mold, and is formed together with the punch die on the top plate in the blank. A movable pad that holds the part,
Is placed on the outside of the movable pad, the bending blade clamping the part to be molded together with the blank holder to the two flanges in the blank,
A catcher that is arranged outside the bending blade, reciprocates integrally with the movable pad, and can be locked to the joint link at a molded bottom dead center,
The first mold of the second mold is disposed outside the catcher, is reciprocally movable in a direction toward the first mold, and is urged in a direction toward the first mold. With the approach to the mold, the joint link is turned toward the inside of the mold to lock the joint link and the catcher at the molding bottom dead center, and the movable pad is used as a top plate in the pressed part. After leaving from the outer link having an outer cam having a cam shape for releasing the engagement between the joint link and the catcher,
The apparatus for manufacturing a pressed part having a hat cross section, wherein the joint link bears a load applied to the top plate of the pressed part by the movable pad while being locked to the catcher.   The top plate of the pressed component has, in a plan view in a direction orthogonal to the top plate, one substantially L-shaped outer shape having one curved portion, and one curved portion that is line-symmetric with the substantially L shape. The pressed part manufacturing apparatus according to claim 1, wherein the device has a substantially inverted L-shaped outer shape or a substantially T-shaped outer shape having two curved portions. The width of the top plate is 30 to 400 mm in a plan view in a direction orthogonal to the top plate, and the height of the vertical wall is 300 mm or less in a side view in a direction parallel to the top plate. The press part manufacturing apparatus according to claim 2 , wherein a curvature of an inner peripheral side of the curved portion is 5 mm or more in a plan view in a direction orthogonal to the top plate. The manufacturing device for a pressed part according to any one of claims 1 to 3 , wherein the blank is a pre-processed metal plate. The press blank manufacturing apparatus according to any one of claims 1 to 4 , wherein the blank is made of a high-tensile steel sheet having a thickness of 0.8 to 3.2 mm. A top plate, two convex ridge lines continuous with the top plate, and two vertical lines respectively continuous with the two convex ridge lines, using the apparatus for manufacturing a pressed part according to any one of claims 1 to 5. A method for manufacturing a pressed part having a hat cross section constituted by a wall, two concave ridges respectively continuous with the two vertical walls, and two flanges respectively continuous with the two concave ridges,
A blank having a tensile strength of 590 to 1600 MPa is arranged between a punch die and a blank holder, a movable pad and a bending blade,
A portion of the blank formed on the top plate is pressed against the punch die by the movable pad and clamped, and a portion of the blank that is outside the portion formed on the top plate and formed on the two flanges. In a state where the portion including is pressed against the bending blade with the blank holder and nipped,
By relatively moving the bending blade, the catcher and the outer cam in the direction of the press bolster, the blank is pressed, and the outer cam pivots the joint link toward the inside of the mold.
The bending blade, the catcher, and the outer cam are further relatively moved in the direction of the press bolster to form the blank into the pressed part at the forming bottom dead center, and the outer cam forms the joint link. Locking the joint link and the catcher while restraining rotation, the movable pad bears the pressing force applied to the top plate of the pressed part,
While the second mold moves in a direction away from the first mold after the molding bottom dead center, the movable pad maintains the engagement between the joint link and the catcher so that the movable pad is pressed. The pressure applied to the top plate at
After the movable pad is separated from the top plate of the pressed part, the engagement between the joint link and the catcher is released,
A method of manufacturing a pressed part, comprising taking out the pressed part from the first die after top dead center of molding.

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