JPS6264423A - Metallic die device for press working - Google Patents

Metallic die device for press working

Info

Publication number
JPS6264423A
JPS6264423A JP60205755A JP20575585A JPS6264423A JP S6264423 A JPS6264423 A JP S6264423A JP 60205755 A JP60205755 A JP 60205755A JP 20575585 A JP20575585 A JP 20575585A JP S6264423 A JPS6264423 A JP S6264423A
Authority
JP
Japan
Prior art keywords
workpiece
punch
die hole
die
inclined surface
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
JP60205755A
Other languages
Japanese (ja)
Other versions
JPH0152089B2 (en
Inventor
Motoatsu Shiraishi
白石 基厚
Tatsuo Nagamitsu
永光 達夫
Akira Kodama
彰 児玉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
HTK Engineering Co Ltd
Original Assignee
Honda Motor Co Ltd
Honda Engineering Co Ltd
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 Honda Motor Co Ltd, Honda Engineering Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP60205755A priority Critical patent/JPS6264423A/en
Publication of JPS6264423A publication Critical patent/JPS6264423A/en
Publication of JPH0152089B2 publication Critical patent/JPH0152089B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE:To prevent the generation of a surface distortion, caused by spring- back, by providing the first inclined surface between the inside surface and the bottom face of a die hole, and also forming the second inclined surface against a die hole opening edge of the outside peripheral surface of a punch. CONSTITUTION:In a die hole 7, the first inclined surface 16 which has been inclined to the inside is provided between an inside surface 12 and a bottom face 13. Subsequently, on the outside peripheral surface of a punch 4, the second inclined surface 18 which has been inclined to the outside is provided between a working part 11 and a base part 10. At the time of press working, two bend parts 3a, 3b of a work 3 are inserted and pressed by smaller wall thickness d2, d3 than wall thickness d1 of other part, respectively, between the first inclined surface 16 and a tip edge 17, and between the second inclined surface 18 and an opening edge 19. Accordingly, a tensile stress of this bend part decreases, by which the generation of a surface distortion, caused by spring-back can be prevented.

Description

【発明の詳細な説明】 10発明の目的 +11  産業上の利用分野 本発明は、有底のダイ穴を有するダイと、ダイ穴との間
にワークを挟圧して凹部あるいは凸部を形成するための
ポンチとを備えるプレス加工用金型装置に関する。
Detailed Description of the Invention 10 Objectives of the Invention + 11 Industrial Application Field The present invention is for forming a concave portion or a convex portion by pressing a workpiece between a die having a bottomed die hole and the die hole. The present invention relates to a press molding device comprising a punch.

(2)従来の技術 従来、かかる金型装置では、第3図で示すようなポンチ
4′と、ダイ穴r′を有するダイ2′とで、ワーク3′
に凹部あるいは凸部を形成すべくプレス加工を行なって
いる。
(2) Prior Art Conventionally, in such a mold apparatus, a punch 4' as shown in FIG. 3 and a die 2' having a die hole r'
Pressing is performed to form concave or convex portions on the surface.

(3)  発明が解決しようとする問題点ところが、上
記従来のものでは、ワーク3′の屈曲部3 a/、 3
 b/でその曲率半径に沿う外方側の部分に引張り応力
が作用していることに基づ(スプリングバックにより、
面歪が生じる。
(3) Problems to be solved by the invention However, in the above-mentioned conventional method, the bent portions 3a/, 3 of the workpiece 3'
Based on the fact that tensile stress is acting on the outer part along the radius of curvature at b/ (due to springback,
Surface distortion occurs.

本発明は、かかる事情に鑑みてなされたものであり、ワ
ークの屈曲部に引張り応力が作用することを回避して面
歪が生じろ、″とケ防1トシ得るようにしまたプレス加
工用金型装置を提供することを目的とする。
The present invention has been made in view of the above circumstances, and is designed to avoid the application of tensile stress to the bent portion of the workpiece and thereby prevent surface distortion from occurring. The purpose is to provide a molding device.

80発明の構成 (1)問題点を解決するための手段 本発明によれば、ポンチは、ワークを一定肉厚で挟圧す
べく、ダイ穴の内側面および底面にそれぞれ対向する外
側面および先端面を有する作用部が、基部の先端側に一
体的に連設されて成り、前記ダイ穴の内側面および底面
間には、前記作用部の先端周縁との間に、前記一定肉厚
よりも小さな肉厚でワークの屈曲部を挟圧すべく底面側
に向かうにつれて内方に傾斜した第」傾斜面が設けられ
、前記ポンチの外周面には、ダイ穴の開口縁との間に前
記一定肉厚よりも小さな肉厚でワークの屈曲部を挟圧す
る第2傾斜面が、基部および作用部間で基部側に向かう
につれて外方に傾斜して設けられる。
80 Structure of the Invention (1) Means for Solving the Problems According to the present invention, the punch has an outer surface and a tip surface facing the inner surface and bottom surface of the die hole, respectively, in order to press the workpiece with a constant thickness. A working part having a wall thickness smaller than the certain thickness is formed integrally with the distal end side of the base, and between the inner surface and the bottom of the die hole and the peripheral edge of the distal end of the working part. A fourth inclined surface is provided which is inclined inward toward the bottom side in order to press the bent part of the workpiece with the wall thickness, and the outer peripheral surface of the punch has the constant wall thickness between the opening edge of the die hole and the outer peripheral surface of the punch. A second inclined surface, which pinches the bent portion of the workpiece with a thickness smaller than that of the second inclined surface, is provided between the base and the acting portion so as to be inclined outward toward the base.

(21作 用 ポンチおよびダイでワークをプレス加工する際に、ポン
チの先端縁および第1傾斜面間、ならびにダイ穴の開口
縁および第2傾斜面間では、ダイ穴の内側面および底面
と、ポンチにおける作用部の外側面および先端面との間
の一定肉厚よりも小さい肉厚でワークの屈曲部が挟圧さ
れる。
(21 action When pressing a workpiece with a punch and a die, between the tip edge of the punch and the first inclined surface, and between the opening edge of the die hole and the second inclined surface, the inner surface and bottom surface of the die hole, The bent portion of the workpiece is pinched with a wall thickness smaller than a certain thickness between the outer surface of the action portion and the tip surface of the punch.

(3)実施例 以下、図面により本発明の一実施但について説明すると
、先ず第1図において、この金型装置1は、たとえば自
動車のドア外板をプレス加工するためのものであり、該
ドア外板に取手部を取付けるための凹部を形成するため
に、ダイ2と、該ダイ2と協働して平板状ワーク3をプ
レス加工するためのポンチ4と、ダイ2の表面にワーク
3を押付(するべ(ポンチ4を囲繞し7て配置されるバ
ッド5とを備える。
(3) Embodiment Hereinafter, one embodiment of the present invention will be explained with reference to the drawings. First, in FIG. In order to form a recess for attaching a handle to the outer plate, a die 2, a punch 4 for pressing a flat workpiece 3 in cooperation with the die 2, and a workpiece 3 on the surface of the die 2 are used. A pad 5 is provided surrounding the punch 4.

ダイ2は、固定の下型6に嵌合固定されており、前記凹
部を形成するための四角形状有底夕”イ穴7を備える。
The die 2 is fitted and fixed to a fixed lower die 6, and is provided with a rectangular bottomed hole 7 for forming the recess.

しかもダイ穴7の底面13には、上下に延びてダイ2に
設けられた空気抜き孔8が開口され、この空気抜き孔8
は下型6に設けられた空気抜き孔9に連通ずる。
Moreover, an air vent hole 8 provided in the die 2 and extending vertically is opened in the bottom surface 13 of the die hole 7.
communicates with an air vent hole 9 provided in the lower die 6.

ポンチ4は、ダイ穴7に対応して基本的に四角形の角柱
状に形成されており、図示しない上型に固定される。ま
たバッド5は、ポンチ4に対して上下に相対移動可能に
して上型に支承されており、しかも下方に向けてばね付
勢される。したがって上型の降下に応じて、先ずバッド
5がダイ2上のワーク3に当接し、ワーク3がバッド5
および夕“42間で挟持される。
The punch 4 is basically formed into a rectangular prism shape corresponding to the die hole 7, and is fixed to an upper die (not shown). Further, the pad 5 is supported by the upper mold so as to be vertically movable relative to the punch 4, and is biased downward by a spring. Therefore, as the upper die descends, the pad 5 first comes into contact with the workpiece 3 on the die 2, and the workpiece 3 contacts the pad 5.
It is sandwiched between ``42'' and ``42''.

第2図において、本発明に従えば、ポンチ4は、基部1
0の先端側に作用部11が一体的に連設されて成る。し
かも、この作用部11は、ダイ穴7の内側面12および
底面13間でワーク3を挟圧するためのものであり、ポ
ンチ4が最大限降下したときに、作用部11の外側面1
4およびダイ穴7の内側面12、ならびに作用部11の
先端面15およびダイ穴γの底面13は、それらの間に
ワーク3を一定肉厚ct1で挟圧すべ(対向する。
In FIG. 2, according to the invention, the punch 4 has a base 1
An operating portion 11 is integrally connected to the distal end side of the 0. Furthermore, this acting portion 11 is for pinching the workpiece 3 between the inner surface 12 and the bottom surface 13 of the die hole 7, and when the punch 4 is lowered to the maximum extent, the outer surface 1 of the acting portion 11
4 and the inner surface 12 of the die hole 7, the tip end surface 15 of the action part 11, and the bottom surface 13 of the die hole γ are capable of pinching the workpiece 3 between them with a constant thickness ct1 (opposed to each other).

また、ダイ穴γにおいて、内側面12および底面13間
には、底面13側に向かうにつれて内方に傾斜した第1
傾斜面16が設けられろ。しかもこの第1傾斜面16と
、ポンチ4の先端縁17とは、前記一定肉厚d1よりも
小さな肉厚d2でワーク3の屈曲部3aを挟圧すべ(対
向する。
In addition, in the die hole γ, between the inner surface 12 and the bottom surface 13, there is a first groove that slopes inward toward the bottom surface 13 side.
A sloped surface 16 is provided. Moreover, this first inclined surface 16 and the tip edge 17 of the punch 4 can press the bent portion 3a of the workpiece 3 with a thickness d2 smaller than the constant thickness d1 (opposed to each other).

さらに、ポンチ4における外周面には、作用部11と基
部10との間において、基部10側に向かうにつれて外
方に傾斜した第2傾斜面18が設けられろ。この第2傾
斜面18と、ダイ穴7の開口縁19とは、前記一定肉厚
d1よりも小さな肉厚d3でワーク3の屈曲部3bを挟
圧すべく対向する。この肉厚d3は前記肉厚Li2と等
しくでもよく、あるいは異なっていてもよい。
Further, on the outer circumferential surface of the punch 4, a second inclined surface 18 is provided between the action portion 11 and the base 10, and the second inclined surface 18 is inclined outward toward the base 10. This second inclined surface 18 and the opening edge 19 of the die hole 7 face each other so as to pinch the bent portion 3b of the workpiece 3 with a thickness d3 smaller than the constant thickness d1. This thickness d3 may be equal to or different from the thickness Li2.

次にこの実施例の作用について説明すると、プレス加工
にあたっては、ポンチ4およびパッド5が上限位置にあ
るときに、ダイ2および下型6上にワーク3が位置決め
載置され、その後、上型を降下せしめることにより、パ
ッド5およびダイ2間にワーク3が挟持され、さらにポ
ンチ4およびダイ穴7の作用により、ワーク3に凹部が
形成される。
Next, the operation of this embodiment will be explained. During press working, when the punch 4 and pad 5 are at the upper limit position, the workpiece 3 is positioned and placed on the die 2 and the lower die 6, and then the upper die is placed on the die 2 and the lower die 6. By lowering the workpiece 3, the workpiece 3 is held between the pad 5 and the die 2, and a recess is formed in the workpiece 3 by the action of the punch 4 and the die hole 7.

かかるプレス加工時に、ワーク3の2つの屈曲部3a、
3bは、第1傾斜面16および先端縁17間、ならびに
第2傾斜面18および開口縁19間で、他の部分での一
定肉厚d1よりも小さな肉厚d2.d3でそれぞれ挟圧
される。このため、各屈曲部3a+371において聞率
半径に沿う外方側の部分では、圧縮により引張応力が減
少する。これにより、スプリングバックが生じることが
極力回避され、したがって面歪が生じることが極力防止
されろ。
During such press working, the two bent parts 3a of the workpiece 3,
3b has a wall thickness d2.3b between the first sloped surface 16 and the tip edge 17, and between the second sloped surface 18 and the opening edge 19, which is smaller than the constant wall thickness d1 in other parts. They are each squeezed at d3. Therefore, the tensile stress is reduced due to compression in the outer portion of each bending portion 3a+371 along the modulus radius. As a result, springback is avoided as much as possible, and surface distortion is therefore prevented as much as possible.

以上の実施例では、ワーク3に凹部を形成するための金
型装置1について述べたが、凸部を形成するのも同様に
行なわれろものであり、ワークに凸部を形成するための
金型装置に本発明を適用し得ることは言うまでもない。
In the above embodiments, the mold device 1 for forming concave portions on the workpiece 3 has been described, but forming convex portions can also be performed in the same manner, and the mold device 1 for forming convex portions on the workpiece 3 has been described. It goes without saying that the present invention can be applied to devices.

C1発明の効果 以上のように本発明によれば、ワークの屈曲部を、ダイ
穴の第1傾斜面およびポンチの先端縁間、ならびにポン
チの第2傾斜面およびダイ穴の開口縁間で、他の部分よ
りも小さい肉厚に挟圧するので、屈曲部の残留引張応力
が減少し、したがってスプリングバックによる面歪の発
生が極力防止される。
C1 Effects of the Invention As described above, according to the present invention, the bent portion of the workpiece is formed between the first inclined surface of the die hole and the tip edge of the punch, and between the second inclined surface of the punch and the opening edge of the die hole. Since the thickness is compressed to be smaller than that of other parts, the residual tensile stress in the bent part is reduced, and the occurrence of surface distortion due to springback is thus prevented as much as possible.

【図面の簡単な説明】[Brief explanation of drawings]

第1図および第2図は本発明の一実施例を示すものであ
り、第1図は金型装置の要部縦断面図、第2図は第1図
の■部拡大図、第3図は従来技術を示すための第2図に
対応した断面図である。 1・・・金型装置、2・・・ダイ、3・・・ワーク、4
・・・ポンチ、7・・・ダイ穴、10・・・基部、11
・・・作用部、12・・・内側面、13・・・底面、1
4・・・外側面、15・・・先端面、16・・・第1傾
斜面、17・・・先端縁、18・・・第2傾斜面、19
・・・開口縁 特許出願人 本田技研工業株式会社 同     ホンダエンジニアリンス末式会社第2図 第3図
Figures 1 and 2 show an embodiment of the present invention, with Figure 1 being a vertical cross-sectional view of the main part of the mold device, Figure 2 being an enlarged view of the ■ part in Figure 1, and Figure 3 being an enlarged view of the section ■ in Figure 1. 2 is a sectional view corresponding to FIG. 2 for showing the prior art. 1...Mold device, 2...Die, 3...Work, 4
... Punch, 7... Die hole, 10... Base, 11
...Action part, 12...Inner surface, 13...Bottom surface, 1
4... Outer surface, 15... Tip surface, 16... First inclined surface, 17... Tip edge, 18... Second inclined surface, 19
... Opening edge patent applicant Honda Motor Co., Ltd. Honda Engineering Co., Ltd. Figure 2 Figure 3

Claims (1)

【特許請求の範囲】[Claims] 有底のダイ穴を有するダイと、ダイ穴との間にワークを
挟圧して凹部あるいは凸部を形成するためのポンチとを
備えるプレス加工用金型装置において、前記ポンチは、
ワークを一定肉厚で挟圧すべく、ダイ穴の内側面および
底面にそれぞれ対向する外側面および先端面を有する作
用部が、基部の先端側に一体的に連設されて成り、前記
ダイ穴の内側面および底面間には、前記作用部の先端周
縁との間に、前記一定肉厚よりも小さな肉厚でワークの
屈曲部を挟圧すべく底面側に向かうにつれて内方に傾斜
した第1傾斜面が設けられ、前記ポンチの外周面には、
ダイ穴の開口縁との間に前記一定肉厚よりも小さな肉厚
でワークの屈曲部を挟圧する第2傾斜面が、基部および
作用部間で基部側に向かうにつれて外方に傾斜して設け
られることを特徴とするプレス加工用金型装置。
In a press molding device comprising a die having a bottomed die hole and a punch for pinching a workpiece between the die hole and forming a concave portion or a convex portion, the punch includes:
In order to compress the workpiece with a constant thickness, an action part having an outer surface and a tip surface facing the inner surface and the bottom surface of the die hole, respectively, is integrally connected to the tip side of the base. Between the inner surface and the bottom surface, there is a first slope that is inclined inwardly toward the bottom surface to pinch the bent part of the workpiece with a thickness smaller than the constant thickness. A surface is provided on the outer peripheral surface of the punch,
A second inclined surface that pinches the bent portion of the workpiece with a wall thickness smaller than the constant wall thickness between the opening edge of the die hole and the second inclined surface is provided between the base portion and the acting portion and slopes outward toward the base side. A press working mold device characterized by:
JP60205755A 1985-09-18 1985-09-18 Metallic die device for press working Granted JPS6264423A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60205755A JPS6264423A (en) 1985-09-18 1985-09-18 Metallic die device for press working

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60205755A JPS6264423A (en) 1985-09-18 1985-09-18 Metallic die device for press working

Publications (2)

Publication Number Publication Date
JPS6264423A true JPS6264423A (en) 1987-03-23
JPH0152089B2 JPH0152089B2 (en) 1989-11-07

Family

ID=16512121

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60205755A Granted JPS6264423A (en) 1985-09-18 1985-09-18 Metallic die device for press working

Country Status (1)

Country Link
JP (1) JPS6264423A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004042122A (en) * 2002-07-15 2004-02-12 Press Kogyo Co Ltd Method and apparatus for molding to exceed elongation ratio of press mold
JP2006289480A (en) * 2005-04-14 2006-10-26 Aida Eng Ltd Press forming method and metal mold used for the same
JP2008025745A (en) * 2006-07-21 2008-02-07 Toyo Tire & Rubber Co Ltd Vibration isolating system
JP2009248087A (en) * 2008-04-01 2009-10-29 Nippon Steel Corp Hat-shaped cross-sectional member made of metal having bent part out of plane in longitudinal direction of member and method of press-forming the same
JP2009262168A (en) * 2008-04-23 2009-11-12 Jfe Steel Corp Method of press-forming press-formed component excellent in shape freezing property
JP2012232329A (en) * 2011-05-02 2012-11-29 Honda Motor Co Ltd Press molding method and device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609521A (en) * 1983-06-29 1985-01-18 Matsushita Electric Ind Co Ltd Device of bent forming die

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609521A (en) * 1983-06-29 1985-01-18 Matsushita Electric Ind Co Ltd Device of bent forming die

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004042122A (en) * 2002-07-15 2004-02-12 Press Kogyo Co Ltd Method and apparatus for molding to exceed elongation ratio of press mold
JP2006289480A (en) * 2005-04-14 2006-10-26 Aida Eng Ltd Press forming method and metal mold used for the same
JP4693475B2 (en) * 2005-04-14 2011-06-01 アイダエンジニアリング株式会社 Press molding method and mold used therefor
JP2008025745A (en) * 2006-07-21 2008-02-07 Toyo Tire & Rubber Co Ltd Vibration isolating system
JP2009248087A (en) * 2008-04-01 2009-10-29 Nippon Steel Corp Hat-shaped cross-sectional member made of metal having bent part out of plane in longitudinal direction of member and method of press-forming the same
JP2009262168A (en) * 2008-04-23 2009-11-12 Jfe Steel Corp Method of press-forming press-formed component excellent in shape freezing property
JP2012232329A (en) * 2011-05-02 2012-11-29 Honda Motor Co Ltd Press molding method and device
US9475111B2 (en) 2011-05-02 2016-10-25 Honda Motor Co., Ltd. Manufacturing method of press product and press forming apparatus

Also Published As

Publication number Publication date
JPH0152089B2 (en) 1989-11-07

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