JP2001047135A - Press forming device of plate material - Google Patents

Press forming device of plate material

Info

Publication number
JP2001047135A
JP2001047135A JP11220975A JP22097599A JP2001047135A JP 2001047135 A JP2001047135 A JP 2001047135A JP 11220975 A JP11220975 A JP 11220975A JP 22097599 A JP22097599 A JP 22097599A JP 2001047135 A JP2001047135 A JP 2001047135A
Authority
JP
Japan
Prior art keywords
formed
direction
cavity
surface
receiving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP11220975A
Other languages
Japanese (ja)
Other versions
JP3540965B2 (en
Inventor
Tadatoshi Kinoshita
忠俊 木下
Original Assignee
Your Business:Kk
株式会社ユアビジネス
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Your Business:Kk, 株式会社ユアビジネス filed Critical Your Business:Kk
Priority to JP22097599A priority Critical patent/JP3540965B2/en
Publication of JP2001047135A publication Critical patent/JP2001047135A/en
Application granted granted Critical
Publication of JP3540965B2 publication Critical patent/JP3540965B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02Stamping using rigid devices or tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00Flanging or other edge treatment, e.g. of tubes
    • B21D19/08Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B21D19/082Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles
    • B21D19/086Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles with rotary cams

Abstract

PROBLEM TO BE SOLVED: To simply and speedily work a rotary die and a cavity at a low cost, to reduce a size/space of a device and to facilitate maintenance. SOLUTION: In a press forming device that a receiving part 8 is arranged on the inner face of a cavity 2 and an abutting part 11 is arranged on the outer face of a rotary die 4, the cavity 2 as well as the rotary die 4 are roughly formed so that the cross section in the direction orthogonal to longitudinal direction has a L shape. The receiving part 8 consists of one receiving part 8a forming a planar receiving face along the forwards and backwards direction of an insert bending blade 6 and the other receiving part 8b forming a planar receiving face along the direction orthogonal to the forwards and backwards direction of the insert bending blade 6. The abutting part 11 consists of one abutting part 11a forming the abutting face corresponding to one receiving face 8a along the forwards and backwards direction of the insert bending blade 6 and the other abutting part 11b forming the abutting face corresponding to the other receiving part 8b along the direction orthogonal to the forwards and backwards direction of the insert bending blade 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press forming apparatus for a plate material, and more particularly, to a plate material formed in a shape suitable for press forming a product having a curved surface or a bulge such as a fender or a pillar of an automobile. The present invention relates to a press molding device.

[0002]

2. Description of the Related Art Conventionally, as an apparatus of this type, for example, FIG.
As shown in FIG. 1, the rotary mold c is inserted into the cavity b of the lower mold a.
Is rotatably provided, and an approach bending blade e that fits with the approach bending section d of the rotary mold c at the time of press forming is formed on the upper mold f, and a receiving section g is provided on the inner surface of the cavity b, and an outer periphery of the rotary mold c is provided. There is one in which a contact portion h is formed on the surface, and the receiving portion g and the contact portion h are formed to be in surface contact during press molding (for example, see Japanese Patent Application Laid-Open No. 8-276218).

[0003] Originally, this type of conventional product is intended to facilitate release of the molded product by rotating and retracting the mold after press molding. Therefore, conventionally, the rotary type of this type of apparatus has generally been formed in an outer shape basically in a columnar shape or a round bar shape, and a cavity is generally formed in a round hole shape.

[0004]

By the way, this kind of device is used, for example, every time a model change of a car is performed.
Because it is a new product, it is often strictly required by finished car manufacturers to shorten the delivery time of products and reduce the unit price of presses. It is desirable that it be formed so that manufacturing costs and maintenance costs can be reduced.

However, in the conventional apparatus, the peripheral shape of the rotary mold and the cavity is basically circular as described above. Therefore, according to the conventional product, it takes time and cost to process and manufacture the rotary mold and the cavity. Inevitable.

Further, the conventional product has a structure in which the cavity is basically formed in a round hole shape and the rotary mold is housed in the cavity as described above, so that a curved portion is easily formed around the cavity of the lower mold. Therefore, in the case of the conventional product, a dead space is easily generated in the cavity or the lower mold position around the cavity. Therefore, the conventional product has a problem that it is difficult to reduce the size and space of the device.

[0007] Further, as shown in FIG.
The extension lines E of the contact surfaces of the lower die and the rotary die are formed so as to intersect with each other, and are provided with a receiving part and a contact part of this kind of structure. Therefore, in the case of the conventional product, if the contact surface between the receiving portion and the abutting portion is not flat-processed with high precision, the wear at this portion becomes severe and maintenance becomes difficult. And positioning must be performed with high accuracy. Therefore, from this point, the conventional products inevitably take time and cost for rotary machining and cavity inner surface machining.

[0008] The present invention has been proposed in view of such problems of conventional products. Therefore, a technical problem of the present invention is to form a rotary mold and a cavity so that machining can be performed simply, quickly, and at low cost, and the apparatus can be reduced in size, space can be saved, and maintenance can be easily performed. An object of the present invention is to provide a press forming apparatus for a plate material.

[0009]

The present invention employs the following technical means in order to solve the above-mentioned problems.

That is, according to the present invention, as shown in FIG. 1, a rotary die 4 is provided in a cavity 2 of a lower die 1 so as to be rotatable about a horizontal axis, and a metal plate 3 is moved to the rotary die 4. An approach bending section 4a for bending is formed extending in the longitudinal direction, and the sheet material 3 is formed with the approach bending section 4a during press molding.
The bending blade 6 is formed on the upper die 7 and is fitted to the receiving die 8 for supporting the rotary die 4 at the time of press forming.
Is provided on the inner surface of the cavity 2, and an abutting portion 11 is provided on the outer surface of the rotary mold 4 to make surface contact with the planar receiving surface of the receiving portion 8. A press forming apparatus for a plate material disposed at a position and rotated and retracted after press forming, wherein the cavity 2 and the rotary mold 4 both have a substantially L-shaped cross section in a direction orthogonal to the longitudinal direction. The receiving portion 8 is formed so that the receiving surface 8 is formed in a planar shape along the direction in which the approaching bending blade 6 advances and retreats, and the receiving portion 8a extends in a direction orthogonal to the direction in which the approaching bending blade 6 advances and retreats. The other receiving part 8 whose receiving surface is formed in a planar shape
b, and the above-mentioned contact portion 11 is provided with one receiving portion 8
The contact surface corresponds to one contact portion 11a formed in a planar shape along the direction of movement of the bending blade 6 and the contact surface corresponds to the other receiving portion 8b. Abutment portion 1 formed in a plane along a direction perpendicular to the direction of movement of
1b (claim 1).

Here, both the cavity 2 and the rotary mold 4 are formed to have a substantially L-shaped cross section in a direction orthogonal to the longitudinal direction, which means that the cavity 2 and the rotary mold 4 are hook-shaped in the longitudinal direction. Is formed in the shape of a square bar. In the case of the present invention, the thickness (height), length, number, formation position, and the like of the receiving portion 8 and the contact portion 11 may be appropriately selected depending on the weight, size, and the like of the rotary mold 4.

According to the present invention, the receiving portion 8 is provided as shown in FIGS.
As shown in (2), it is preferable that the cavity 2 is formed of a flat plate 9 fixed to the inner surface of the cavity 2 with bolts 10 (claim 2).

In the case of the present invention, the receiving portion 8 may be ground together when the inner surface of the cavity 2 is processed.
In the case where the flat plate 9 is formed as in the present invention, the flat plate 9 that has been processed in advance can be fixed to an arbitrary position of the cavity 2, so that the formation of the receiving portion 8 can be facilitated. In this case, when the flat plate 9 is worn, the bolt 1
There is an advantage that maintenance can be facilitated because it can be easily replaced with a new one via the zero. In this case, according to the present invention, as shown in FIGS. 8 and 10, both the one receiving portion 8a and the other receiving portion 8b
It may be formed by.

In the present invention, the contact portion 11 is preferably formed by a flat plate 9 fixed to the outer surface of the rotary mold 4 with bolts 10 as shown in FIGS. ).

In this case, since the flat plate 9 which has been processed in advance is fixed to the outer surface of the rotary mold 4, the contact portion 11 can be easily formed. Further, in this case, when the flat plate 9 as the contact portion 11 is worn, the flat plate 9 can be easily replaced by tightening and loosening the bolts 10, so that maintenance can be facilitated. 9 and 10, both the one contact part 11a and the other contact part 11b may be formed of the flat plate 9.

Further, according to the present invention, the lower surface 4b at the central portion in the longitudinal direction of the rotary mold 4 is formed in an arc shape in the direction of rotation of the rotary mold 4 about the axis P of the rotary mold 4, and the lower surface 4b at the central portion is formed. It is preferable that the lower mold 1 is provided with a bearing mechanism 14 for bearing (claim 4).

In this case, even if the rotary mold 4 is formed in a long shape, the rotary mold 4 can be smoothly rotated by the arc-shaped central lower surface 4b and the support mechanism 14 for supporting the central lower surface 4b. There is an advantage that the rotation mold 4 can be prevented from sagging while being maintained.

Further, according to the present invention, the bearing mechanism 14 includes a pair of parallel rollers 14a in which a shaft 14a1 is arranged along the longitudinal direction of the rotary mold 4 and a peripheral surface of the shaft 14a1 is in contact with a lower surface 4b of a central portion of the rotary mold 4. (Claim 5).

In this case, the hanging of the rotary mold 4 can be reliably prevented by a simple mechanism.

[0020]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1 and the like, 1 is a lower mold, and 2 is a cavity formed in the lower mold 1. In this embodiment, the lower die 1 is formed of a main body 1a and a molded part 1b fixed to an upper portion of the main body 1a. The metal plate 3 is set on the upper surface of the formed portion 1b. As shown, the cavity 2 has a substantially L-shaped cross section in a direction perpendicular to the longitudinal direction.

Reference numeral 4 denotes a rotary mold provided in the cavity 2 so as to be rotatable about a horizontal axis. This rotary mold 4
Is arranged at a predetermined rotation position at the time of press molding by a cylinder device or the like, and is retracted after the press molding.

The rotary mold 4 has a substantially L-shaped cross section in a direction perpendicular to the longitudinal direction. In addition, the rotary mold 4 is provided with an approach bending section 4a for approaching and bending the metal plate material 3.
Is provided. The shift bent portion 4 a is formed at the upper end of the rotary die 4 so as to extend in the longitudinal direction of the rotary die 4. As shown in FIG. 3, both ends of the rotary mold 4 are supported by bearings 5.

Reference numeral 6 denotes an approach bending blade which fits with the approach bending section 4a via the plate material 3 during press forming. In this embodiment, the shift bending blade 6 is formed on a slide cam 7 a as an upper die 7. In this embodiment, the upper die 7 includes a presser die 7b and a flange processing die 7c that move forward and backward by a cam mechanism.

Reference numeral 8 denotes a receiving portion for supporting the rotary mold 4 during press forming. A plurality of the receiving portions 8 are provided at appropriate positions on the inner surface of the cavity 2 over the longitudinal direction of the cavity 2. The receiving portion 8 has one receiving portion 8 a having a receiving surface formed in a planar shape along the direction in which the approach bending blade 6 advances and retracts (the direction indicated by the arrow in FIG. 1), and is orthogonal to the direction in which the approach bending blade 6 advances and retreats. The receiving surface is formed with the other receiving portion 8b formed in a planar shape along the direction of movement.

In this embodiment, the receiving portion 8a is formed by fixing a flat plate 9 to the inner surface of the cavity 2 with a bolt 10. The other receiving portion 8b is provided in the cavity 2
Is formed by grinding the inner surface of the substrate into a convex step shape.

Reference numeral 11 denotes a contact portion which comes into surface contact with the flat receiving surface of the receiving portion 8. The contact portion 11 includes one contact portion 11a having a flat contact surface along the direction in which the bending blade 6 advances and retreats corresponding to the one receiving portion 8a, and the other receiving portion 8b. Correspondingly, the contact surface is formed with the other contact portion 11b having a planar shape along the direction orthogonal to the direction in which the approach bending blade 6 advances and retreats.

In the present embodiment, the one contact portion 11a is formed by grinding the outer surface of the rotary mold 4 into a convex step. The other contact portion 11b is formed by fixing a flat plate 9 to the outer surface of the rotary mold 4 with a bolt 10. One contact portion 11a and the other contact portion 11
A plurality of b are provided at appropriate positions over the longitudinal direction of the rotary mold 4.

As shown in FIG. 1, the one contact portion 11a is positioned such that the left end surface 12 thereof is deviated from the vertical line L passing through the axis P in the rotational retreat direction of the rotary mold 4, as shown in FIG. ing. The other contact portion 11b is positioned such that the upper end surface 13 is below a horizontal line H passing through the axis P.

Reference numeral 14 (see FIGS. 3 and 4) denotes a bearing mechanism for supporting the lower surface 4b (see FIG. 7) of the rotary mold 4 at the central portion in the longitudinal direction. The support mechanism 14 is provided on the lower die 1. The lower surface 4b at the central portion of the rotary mold 4 is aligned with the axis P of the rotary mold 4.
Is formed in an arc shape in the rotation direction of the rotary mold 4 around the center. In this embodiment, the lower surface 4b of the center part of the rotary mold 4 is formed by fixing an arc-shaped plate 15 with, for example, hexagonal bolts 16 as shown in FIG. The outer peripheral surface of the plate 15 is induction hardened,
Hardness is increased.

In the present embodiment, the bearing mechanism 14 is formed of a pair of parallel rollers 14a whose peripheral surfaces are in contact with the lower surface 4b at the center of the rotary mold 4. The pair of rollers 14a has a shaft 14a1 disposed along the longitudinal direction of the rotary mold 4, and is formed to rotate about the shaft 14a1. 14b is a holder for supporting the shaft 14a1 of the roller 14a. The holder 14b has bolt holes 14c at four corners, and is attached to the lower die 1 through the bolt holes 14c, for example, with hexagonal bolts 14d (see FIG. 7). 14e is a fixing pin for fixing the shaft 14a1 of the roller 14a.

Next, the operation of the present invention will be described. First, lower mold 1
The plate material 3 before processing is set in the forming part 1b. In this state, the upper die 7 descends, and the slide cam 7a rotates the rotary die 4 clockwise about the axis P in FIG. 1 to set it at a predetermined position. At this time, the pressing die 7b fixes the plate 3 to the forming portion 1b of the lower die 1, and the flange processing die 7c interlocking with the pressing die 7b forms a predetermined position of the plate 3.

Next, the slide cam 7a moves laterally, and together with the slide cam 7a, the biasing blade 6 advances in the direction shown by the arrow in FIG. At this time, the contact portion 11 of the rotary die 4 comes into surface contact with the receiving portion 8 of the lower die 1, and the press pressure applied to the rotary die 4 is received by the lower die 1.

When the pressing operation is completed, the upper die 7 returns, and the approaching bending blade 6, the holding die 7b, and the flange processing die 7
c is separated from the lower mold 1. The return operation of the upper die 7 is as follows.
For example, it is detected by a sensor, and upon receiving a signal from this sensor, the cylinder device or the like is driven, and as shown in FIG. 2, the rotary mold 4 rotates and retracts about the axis P. Thereby, the contact part 11 is separated from the receiving part 8 of the lower die 1, the bent part 4 a of the rotary die 4 is removed from the plate 3, and the plate 3 can be released.

[0035]

As described above, according to the present invention, the cavity of the lower mold and the rotary mold are formed to have a substantially L-shaped cross section, and the receiving portion on the inner surface of the cavity is received along the direction in which the bending blade advances and retreats. One receiving portion having a flat surface and the other receiving portion having a flat receiving surface along a direction perpendicular to the direction in which the bending blade advances and abuts the outer surface of the rotary mold. The part is formed so as to correspond to each receiving part.

Therefore, in the case of the present invention, for example, a rotary die or a cavity can be cut out from a square bar and straightened horizontally and vertically, so that the number of processing steps can be greatly reduced as compared with the conventional apparatus. The device can be manufactured simply, quickly and at low cost.

In the case of the present invention, as described above, the rotary mold and the cavity are formed in a substantially L-shaped cross section. Therefore, according to the present invention, the area around the cavity of the lower mold can be formed linearly and the dead space around the cavity and the cavity can be eliminated, so that the apparatus can be reduced in size and space can be saved.

Further, in the present invention, as described above, the receiving portion and the contact portion are disposed so as to be shifted by 90 degrees with respect to the direction in which the bending blade advances and retreats. Therefore, according to this, not only can the press pressure be received in a stable state, but also the positioning of the contact surface of the receiving portion and the contact portion, the planar processing of the contact surface can be simplified and speeded up, and the maintenance is facilitated. Can be

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing a preferred embodiment of a device of the present invention.

FIG. 2 is a sectional view of a main part for explaining the operation of the above device.

FIG. 3 is a plan view of a main part of the rotary mold with a part cut away.

FIG. 4 is a plan view of a main part of the support mechanism.

FIG. 5 is a sectional view taken along line VV in FIG. 4;

FIG. 6 is a front view taken along the line VI-VI in FIG. 4;

FIG. 7 is a sectional view of an essential part for explaining the operation of the support mechanism.

FIG. 8 is a cross-sectional view of a main part showing another embodiment of a receiving part and a contact part.

FIG. 9 is a cross-sectional view of a main part showing another embodiment of a receiving part and a contact part.

FIG. 10 is a sectional view of a main part showing another embodiment of a receiving part and a contact part.

FIG. 11 is a sectional view of a main part showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower die 2 Cavity 3 Plate material 4 Rotary die 4a Bend forming part 6 Bend blade 7 Upper die 8 Receiving part 8a One receiving part 8b The other receiving part 11 Contact part 11a One contact part 11b The other contact Department

Claims (5)

[Claims]
1. A rotary mold is provided in a lower mold cavity so as to be rotatable about a horizontal axis, and an approach bending forming part for approaching and bending a metal plate material is formed to extend in the longitudinal direction. A shift bending blade that fits via a plate material during press forming with the shift bending portion is formed on the upper die, and a receiving portion for supporting the rotary die during press forming is provided on the inner surface of the cavity, An abutting portion is provided on the outer surface of the rotary die, which is in surface contact with the flat receiving surface of the receiving portion, and the rotary die is disposed at a predetermined rotation position during press molding, and is rotated and retracted after press molding. A cross-section in a direction perpendicular to the longitudinal direction of each of the cavity and the rotary mold is formed substantially in an L-shape, and the receiving portion is moved in the retreating direction of the approach bending blade. While the receiving surface is formed flat along And the other receiving portion, the receiving surface of which is formed in a planar shape along a direction orthogonal to the direction in which the bending blade moves forward and backward, the contact portion corresponds to one receiving portion. The contact surface is formed in a planar shape along the direction of the approaching bending blade, and the contact surface corresponds to the other receiving portion in a direction perpendicular to the direction of the approaching bending blade. A press forming apparatus for a plate material, wherein the press forming apparatus is formed with the other contact portion formed in a plane along the same.
2. The press forming apparatus according to claim 1, wherein the receiving portion is a flat plate fixed to the inner surface of the cavity with bolts.
3. The press forming apparatus for a plate material according to claim 1, wherein the contact portion is a flat plate fixed to an outer surface of the rotary mold with bolts.
4. The press-forming apparatus for a plate material according to claim 1, wherein a lower surface of a central portion in a longitudinal direction of the rotary mold is arranged in a rotational direction of the rotary mold about an axis of the rotary mold. A press forming apparatus for a plate material, wherein the lower die has a support mechanism formed in an arc shape and supporting the lower surface of the central portion.
5. The press forming apparatus for a plate material according to claim 4, wherein the bearing mechanism has a shaft arranged along a longitudinal direction of the rotary mold, and a peripheral surface abuts a lower surface of a central portion of the rotary mold. A press forming apparatus for a plate material formed by a pair of parallel rollers.
JP22097599A 1999-08-04 1999-08-04 Plate press forming equipment Expired - Fee Related JP3540965B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22097599A JP3540965B2 (en) 1999-08-04 1999-08-04 Plate press forming equipment

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP22097599A JP3540965B2 (en) 1999-08-04 1999-08-04 Plate press forming equipment
AT00116173T AT294650T (en) 1999-08-04 2000-08-01 Device for pressing a leaf in a preferred form
ES00116173T ES2238954T3 (en) 1999-08-04 2000-08-01 Apparatus for stamping a metal sheet in a desired form.
EP20000116173 EP1074319B1 (en) 1999-08-04 2000-08-01 Apparatus for pressing a metal plate into a desired shape
DE2000619854 DE60019854T2 (en) 1999-08-04 2000-08-01 Apparatus for pressing a sheet into a preferred form
KR20000045062A KR100541327B1 (en) 1999-08-04 2000-08-03 Apparatus for pressing a metal plate into a desired shape

Publications (2)

Publication Number Publication Date
JP2001047135A true JP2001047135A (en) 2001-02-20
JP3540965B2 JP3540965B2 (en) 2004-07-07

Family

ID=16759511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22097599A Expired - Fee Related JP3540965B2 (en) 1999-08-04 1999-08-04 Plate press forming equipment

Country Status (6)

Country Link
EP (1) EP1074319B1 (en)
JP (1) JP3540965B2 (en)
KR (1) KR100541327B1 (en)
AT (1) AT294650T (en)
DE (1) DE60019854T2 (en)
ES (1) ES2238954T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7243524B2 (en) 2003-11-27 2007-07-17 Yourbusiness Co., Ltd. Negative-angle press-working die
JP2007283352A (en) * 2006-04-17 2007-11-01 Your Business:Kk Bearing structure and press-forming apparatus having the same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005009416A1 (en) * 2005-03-02 2006-09-14 Bayerische Motoren Werke Ag Device for a press for forming a sheet-metal part with a portion which can be shaped as an undercut separately in the device
DE102012210960A1 (en) * 2012-06-27 2014-04-03 Bayerische Motoren Werke Aktiengesellschaft Filling device for metal plate press processing mold, has eccentric mechanism provided with filling piece for filling kinematic locking device, and eccentric disk supported on eccentric disk accommodating part
FR2995232B1 (en) * 2012-09-10 2014-09-19 Peugeot Citroen Automobiles Sa Press tool for binding a sheet

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0427886A1 (en) * 1989-11-16 1991-05-22 Uemura Metal Industries Co., Ltd. Die for negative angle forming
US5347838A (en) * 1993-06-25 1994-09-20 Umix Co., Ltd. Forming die for thin plate
JPH08276218A (en) * 1995-04-04 1996-10-22 Mazda Motor Corp Device for forming metal plate
JPH08332523A (en) * 1995-06-09 1996-12-17 Toyota Motor Corp Press method and its device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7243524B2 (en) 2003-11-27 2007-07-17 Yourbusiness Co., Ltd. Negative-angle press-working die
JP2007283352A (en) * 2006-04-17 2007-11-01 Your Business:Kk Bearing structure and press-forming apparatus having the same
KR101217003B1 (en) * 2006-04-17 2012-12-31 가부시키가이샤 유아비지네스 Bearing structure and press machine having the structure

Also Published As

Publication number Publication date
AT294650T (en) 2005-05-15
KR100541327B1 (en) 2006-01-10
KR20010021208A (en) 2001-03-15
JP3540965B2 (en) 2004-07-07
EP1074319A2 (en) 2001-02-07
EP1074319A3 (en) 2003-05-21
ES2238954T3 (en) 2005-09-16
DE60019854D1 (en) 2005-06-09
DE60019854T2 (en) 2005-11-10
EP1074319B1 (en) 2005-05-04

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