JPS60231529A - Tool for deep drawing - Google Patents
Tool for deep drawingInfo
- Publication number
- JPS60231529A JPS60231529A JP59087755A JP8775584A JPS60231529A JP S60231529 A JPS60231529 A JP S60231529A JP 59087755 A JP59087755 A JP 59087755A JP 8775584 A JP8775584 A JP 8775584A JP S60231529 A JPS60231529 A JP S60231529A
- Authority
- JP
- Japan
- Prior art keywords
- punch
- tip
- die
- surface area
- deep drawing
- 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.)
- Pending
Links
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
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の技術分野１
本発明は底付き容器等の形状品を成形する深絞り用工具
に係り、特に絞り成形中に発生する素板の肉あまりに起
因するしわを除去することができる深絞り用工具の改良
に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention 1] The present invention relates to a deep drawing tool for forming shaped products such as containers with bottoms, and in particular to a tool for removing wrinkles caused by excessive thickness of a blank plate that occurs during drawing. The present invention relates to improvements in deep drawing tools that can be used for deep drawing.
［発明の技術的背景及びその問題点］
第４図は、従来の深絞り用工具の構造を示したものであ
るが、これを簡単に説明すれば、ボンチ１と仮押え２上
に素板３を載せて、パッド４を弾持した穴５のあるダイ
ス６をプレスで押すことにより、ポンチ１の先端の丸み
部７で素板３を押し曲げダイス６の穴５の中に引き込ん
で、底付き容器等の形状品を深絞りするようになってい
る。[Technical background of the invention and its problems] Fig. 4 shows the structure of a conventional deep drawing tool. 3 and press the die 6 with the hole 5 holding the pad 4 with a press, the rounded part 7 of the tip of the punch 1 presses and bends the blank plate 3 and draws it into the hole 5 of the die 6. It is designed to deep draw shaped products such as containers with bottoms.
ところが、上記従来の深絞り用工具によれば、ダイス成
形面８がポンチ側面９と同一線上にあり、且つパッド面
１０がフラットなため、ポンチ１がダイス６の穴５の中
に完全に入り込む成形終期において、ポンチ先端の丸み
部７に空隙１１が残存することになる。この空隙１１が
残存していると、絞りが進行する際発生する素板３の肉
あまり部が上記空隙１１に入り込み重なりしわとなって
現われる。この重なりしわは、特に段差を有する形状品
の肩部に多く現われ、しかも素板３として約０．８＃程
度の薄い厚さを有するＳＰＣ鋼板等を上下に２枚重ねて
その中間に粘性樹脂層を介設した積層鋼板を使用した場
合には著しい。第５図に、段差を有する形状品の代表例
であるオイルパン１２を示すが、この段差肩部に現われ
る重なりじわ１３を詳細に示したのが第６図である。However, according to the conventional deep drawing tool described above, the die forming surface 8 is on the same line as the punch side surface 9 and the pad surface 10 is flat, so the punch 1 completely enters the hole 5 of the die 6. At the final stage of forming, a void 11 remains in the rounded portion 7 at the tip of the punch. If this gap 11 remains, the excess thickness of the blank plate 3 that occurs as the drawing progresses will enter the gap 11 and appear as overlapping wrinkles. These overlapping wrinkles often appear especially on the shoulders of shaped products with steps, and moreover, two SPC steel plates, etc. with a thin thickness of about 0.8 # are stacked one above the other as the base plate 3, and a viscous resin is placed in the middle. This is significant when laminated steel plates with interposed layers are used. FIG. 5 shows an oil pan 12 that is a typical example of a shaped product having a step, and FIG. 6 shows in detail the overlapping wrinkles 13 that appear at the shoulder of this step.
このような重なりしわは形状の線長差による材料′の肉
あまりが原因であるが、重なりしわは亀裂に至ることが
多く、亀裂に至ると商品として成立しないので問題とな
る。Such overlapping wrinkles are caused by excessive thickness of the material due to the difference in the line length of the shape, but overlapping wrinkles often lead to cracks, which poses a problem because the product cannot be sold as a product.
そこで、その対策として成形後の状況を見ながら成形条
件あるいは製品形状の変更を行なうという方法を採って
いたが、この方法では確実な効果が得られないのが現状
であった。Therefore, as a countermeasure to this problem, a method has been adopted in which the molding conditions or product shape are changed while monitoring the situation after molding, but at present, this method does not provide reliable results.
［発明の目的］
本発明は、上記従来の問題点に鑑みなされ、その目的は
一回の絞り成形で、形状品の肩部に生じる素板の肉あま
り部を吸収し、重なりしわの発生を有効に防止すること
ができる深絞り用工具を得ることである。[Object of the Invention] The present invention was made in view of the above-mentioned conventional problems, and its purpose is to absorb the excess thickness of the blank plate that occurs at the shoulder of the shaped product in one drawing process, and to prevent the occurrence of overlapping wrinkles. The object of the present invention is to obtain a tool for deep drawing that can be effectively prevented.
［発明の概要１
上記目的に沿う本発明の構成は、肉あまり部を吸収する
凹状又は凸状の表面積拡大部を先端に設けたポンチと、
このポンチとダイスとの相対運動により上記ポンチ先端
の丸み部で押し曲げられる素板をポンチに強圧してしご
き上げる接触子と、この接触子によりしこぎ上げられた
素板の肉あまり部をポンチ先端に設けた上記表面積拡大
部に押し付けこれに密接させるパッドとを備えてなるこ
とを特徴とする。これにより、成形途中で素板の肉あま
りが生じてもこれをすべて表面積拡大部に吸収させるこ
とができるようにし、肉あまり部に起因する重なりしわ
や亀裂が形状品の肩部に生じないようにしたものである
。[Summary of the Invention 1 The structure of the present invention in accordance with the above-mentioned object includes a punch having a concave or convex surface area enlarged portion at its tip for absorbing excess meat;
A contact element that presses the blank plate, which is pushed and bent by the rounded part of the punch tip due to the relative movement between the punch and the die, and presses up the blank plate, and punches the excess thickness of the blank plate that has been squeezed up by this contact piece. It is characterized by comprising a pad that is pressed against and brought into close contact with the surface area enlarged portion provided at the tip. As a result, even if there is excess wall thickness on the blank plate during forming, it can be absorbed by the expanded surface area, and this prevents overlapping wrinkles or cracks from forming on the shoulders of the shaped product due to the excess wall thickness. This is what I did.
［発明の実施例］
本発明の実施例を第１図〜第２図に基づいて説明すれば
以下の通りである。なお、本実施例では、鋼板間に粘性
を有する樹脂材を介して形成された制振鋼板を素板とし
て使用し、形状品として所謂くら型形状のオイルパンを
対象とした場合を扱うが、薄い鋼板による一般的な形状
品にも本発明は適用できる。[Embodiments of the Invention] Examples of the present invention will be described below based on FIGS. 1 and 2. In this example, a damping steel plate formed with a viscous resin material interposed between steel plates is used as a base plate, and a so-called saddle-shaped oil pan is used as a shaped product. The present invention can also be applied to general shaped products made of thin steel plates.
第１図に示すように、深絞り用工具は、ポンチ１５、仮
押え１６．ダイス１７．接触子１８及びパッド１９から
成る。As shown in FIG. 1, the deep drawing tools include a punch 15, a temporary presser 16. Dice 17. It consists of a contactor 18 and a pad 19.
ポンチ１５は基端が固定され、先端にはその隅の丸み部
２０近傍に位置して先端の表面積を拡大する凹部２１が
設けられる。この凹部は凸部であってもよく、本発明の
表面積拡大部を形成する。The proximal end of the punch 15 is fixed, and the tip is provided with a recess 21 located near a rounded corner 20 to enlarge the surface area of the tip. The recesses may be convex portions and form the surface area enlargement portions of the present invention.
仮押え１６は、ポンチ側面に隣接するとともにボンデ側
面に沿って昇降自在に設けられる。The temporary presser foot 16 is adjacent to the side surface of the punch and is movable up and down along the side surface of the bonder.
ダイス１７は仮押夫１６と同じく昇降自在に設けられ、
ポンチ１５を受け入れる穴２２を中央に有するとともに
、該穴を形成づるダイス１７の成形面２３であって、ポ
ンチ先端の丸み部２０を臨む一側に孔２４が傾斜して設
けられる。The die 17 is provided so that it can be raised and lowered like the temporary pusher 16,
A hole 22 for receiving the punch 15 is provided in the center, and a hole 24 is provided at an angle on one side of the molding surface 23 of the die 17 that forms the hole, facing the rounded portion 20 at the tip of the punch.
接触子１８は上記ダイス成形面２３に設けた孔２４に摺
動自在に嵌合され、その後面が、ポンチ先端の丸み部２
０方向に接触子１８を所定圧力で付勢する弾圧手段２５
に弾持される。弾圧手段としては、図示例のようなばね
等の弾性部材の仙に、液圧あるいは空気圧で弾持するよ
うにしてもよい。The contactor 18 is slidably fitted into a hole 24 provided in the die forming surface 23, and its rear surface is connected to the rounded portion 2 at the tip of the punch.
Pressure means 25 that urges the contactor 18 in the 0 direction with a predetermined pressure
will be supported by. As the pressure means, it may be supported by hydraulic or pneumatic pressure on an elastic member such as a spring as shown in the illustrated example.
また、接触子１８の前面には、２つの倣い而２６ａ、
２５ｂがダイス１７の移動方向に連設して設けられ、各
倣い面２６はポンチ先端の丸み部２０に倣うようにこれ
とはマ同じ曲率面を共に有している。このような接触子
１８は、常時は、下方に位置する倣い面２６ａの始点ａ
がダイス成形向２３と面一となり、上方に位置する倣い
面２６ｂの終点すが孔２４より食み出すように該孔２４
に収まっている。In addition, on the front surface of the contact 18, there are two traces 26a,
25b are provided in succession in the moving direction of the die 17, and each tracing surface 26 has a surface of curvature that is the same as the rounded portion 20 at the tip of the punch. Such a contactor 18 is normally located at the starting point a of the tracing surface 26a located below.
The hole 24 is flush with the die forming direction 23, and the end point of the tracing surface 26b located above protrudes from the hole 24.
It fits in.
パッド１９は、ダイス１７中火の孔の上部を塞ぐように
嵌合されるとともにダイス１７と共通の基台（図示せず
）にその上面がばね２７等によりポンチ１５方向に付勢
されて弾持され、常時は、孔２４より食み出している接
触子１８に下降を遮ぎられている。また、その下面には
ポンチ先端の凹部２１と嵌合する凸部２８が設けられて
いる。The pad 19 is fitted so as to close the upper part of the hole in the middle of the die 17, and its upper surface is biased toward the punch 15 by a spring 27 or the like on a common base (not shown) with the die 17, so that the pad 19 is elastic. The contact 18 protruding from the hole 24 normally prevents the contact 18 from descending. Further, a convex portion 28 is provided on the lower surface of the punch to fit into a concave portion 21 at the tip of the punch.
さて、このような構成による本実施例の作用を説明する
と、成型始期、制振鋼板３０はポンチ１５の先端に置か
れるとともに、その端部がダイス１７と仮押え１６との
対向面間に面一に抱束される。次いで、ダイス１７をパ
ッド１９とともに下降するとポンチ先端の丸み部２０で
制振鋼板３０は押し曲げられて徐々にダイス１７の穴２
２の中に引き込まれて行く。Now, to explain the operation of this embodiment with such a configuration, at the beginning of forming, the vibration-damping steel plate 30 is placed at the tip of the punch 15, and its end is placed between the facing surfaces of the die 17 and the temporary presser 16. embraced as one. Next, when the die 17 is lowered together with the pad 19, the vibration-damping steel plate 30 is pressed and bent by the rounded part 20 at the tip of the punch and gradually presses into the hole 2 of the die 17.
I am drawn into 2.
第１図は、絞りが進行して接触子１８の倣い面２６８の
始点ａにポンチ１５が接触した成形途中を示している。FIG. 1 shows a state in the middle of forming when the punch 15 comes into contact with the starting point a of the tracing surface 268 of the contactor 18 as the drawing progresses.
ポンチ１５が接触したこの時点から本発明の特長となる
制振鋼板３０の肉あまり部の吸収過程が始まる。すなわ
ち、ダイス１７の下降に伴い、ポンチ先端ｑ丸み部２０
で押し曲げられる制振鋼板３０は、接触子１８前面のａ
点からｂ点に至る倣い面２６によりポンチ１５の先端丸
み部２０に線接触で強圧されしごき上げられる。At this point when the punch 15 makes contact, the process of absorbing the excess thickness of the damping steel plate 30, which is a feature of the present invention, begins. That is, as the die 17 descends, the punch tip q rounded part 20
The damping steel plate 30 is pressed and bent at a
The profiling surface 26 extending from point b to point b strongly presses and squeezes the rounded tip 20 of the punch 15 in line contact.
これは、ポンチ先端の丸み部２０に対する強圧の反力に
より弾圧手段２５の付勢力に抗して接触子１８が後退し
て行く過程で、その倣い面２６が制振鋼板３０を介して
順次ポンチ１５に接触していくことによる。このしごき
上げにより、形状の線長差による材料の肉あまりが−Ｆ
方に移行し、この移行した肉あまり３１によってボンデ
先端から制振鋼板３０が浮き上がる。This is because, in the process of the contact 18 retreating against the biasing force of the pressing means 25 due to the reaction force of the strong pressure against the rounded portion 20 at the tip of the punch, the tracing surface 26 is successively punched through the vibration-damping steel plate 30. By coming into contact with 15. By this ironing, the excess thickness of the material due to the difference in line length of the shape is -F
The damping steel plate 30 is lifted from the tip of the bonde by the transferred excess thickness 31.
そして、成形終期では゛第２図に示す如く、ポンチ先端
の丸み部２０にある制振鋼板３０は、後退した接触子１
８の第２の、倣い面２６ｂによって圧接される。このと
き接触子１８がダイス１７の孔２４の中に完全に入り込
むので、今まで徐々に下降していたパッド１９が、接触
子１８の拘束を開放され、そのばね２７の付勢力により
、浮き上がった制振鋼板３０をポンチ先端に押し付ける
。この押し付（）により肉あまり部３１は、パッド１９
の凸部２８によってポンチ先端の凹部２１に押し込まれ
てこれに密接して成形が完了する。At the final stage of forming, as shown in FIG.
8 and is pressed against the second tracing surface 26b. At this time, the contact 18 completely enters the hole 24 of the die 17, so the pad 19, which had been gradually descending until now, is released from the restraint of the contact 18, and floats up due to the biasing force of the spring 27. The damping steel plate 30 is pressed against the tip of the punch. Due to this pressing (), the excess flesh portion 31 is removed from the pad 19.
It is pushed into the recess 21 at the tip of the punch by the protrusion 28, and the molding is completed when it comes into close contact with the recess 21.
したがって、絞り成形されたオイルパンは、その段差肩
部に重なりしわがなく、底の一部にこの重なりしわを吸
収した***部が見られることになる。また、ダイス１７
の下降に伴って、接触イ１８とパッド１９が自動的且つ
相前後して作動することにより、肉あまり部を上方へ移
行しオイルパン自体に吸収させるので、−回の絞り成形
で重なりしわの除去が可能となり、成形作業が極めて簡
単となる。構造においても、ダイス１７中に接触子１８
を設ける点を考慮しても、その他はポンチ１５及びパッ
ド１９に僅かな変形を加えるだけで済むので、効果に比
して差程複雑ではなく、しかも接触子１８の動きも原理
的にはパッド１９の動きと同じなので、全体の動きの円
滑さが担保できる。Therefore, the oil pan that has been drawn has no overlapping wrinkles at its step shoulders, and a raised portion that absorbs the overlapping wrinkles can be seen on a portion of the bottom. Also, dice 17
As the oil pan lowers, the contact 18 and the pad 19 operate automatically and in sequence to move the excess flesh upwards and absorb it into the oil pan itself, thereby eliminating overlaps and wrinkles during the -th drawing process. It can be removed, making the molding work extremely easy. Also in the structure, the contact 18 is placed in the die 17.
Even if we take into account the provision of a Since the movement is the same as No. 19, smoothness of the overall movement can be ensured.
なお、肉あまりの程度によって接触子１８を付勢する弾
圧手段２５の圧力を調整することが可能であり、またポ
ンチ先端の凹部２１面積が決定される。It is possible to adjust the pressure of the pressing means 25 that urges the contact 18 depending on the degree of overfilling, and also determines the area of the recess 21 at the tip of the punch.
第３図は、ポンチ先端に設ける表面積拡大部の形状を種
々変更した場合にオイルパンの肩部及び底部に現われる
形状を示している。すなわち、第３図（イ）はポンチ先
端の丸み部２０そのものを***させたもの、同（ロ）は
凸部としたもの、同（ハ）は（イ）と第１図のものとを
組み合わせたものである。このように絞り成形中に発生
する肉あまりの程度によってポンチ先端に設ける表面積
拡大部の形状を種々変更することにより、オイルパンの
重なりじわ発生を有効に防止することができる。FIG. 3 shows the shapes that appear on the shoulder and bottom of the oil pan when the shape of the surface area enlarged portion provided at the tip of the punch is changed in various ways. That is, Fig. 3 (a) shows a case in which the rounded part 20 itself at the tip of the punch is raised, Fig. 3 (b) shows a case in which it is made into a convex part, and Fig. 3 (c) shows a combination of (a) and the one in Fig. 1. It is something that By changing the shape of the surface area enlarged portion provided at the tip of the punch in various ways according to the degree of excess material generated during drawing, it is possible to effectively prevent the occurrence of overlapping wrinkles in the oil pan.
［発明の効果］
以上要するに本発明によれば、ポンチ先端の丸み部で押
し曲げられる素板を接触子によってしごき上げつつ成形
し、しごき上げによってボチン先端部に集まった肉あま
り部をポンチ先端に設けた表面積拡大部にパッドにより
押し付けこれに密接させるようにしたので、−回の絞り
成形で、形状品の肩部に生じる素板の肉あまり部を形状
品自身の形状の中に吸収することができ、この肉あまり
に起因する重なりしわの発生を有効に防止することがで
きるという優れた効果を発揮する。[Effects of the Invention] In summary, according to the present invention, a blank plate that is pressed and bent by the rounded part of the punch tip is pressed and bent by a contact and shaped, and the excess material that has gathered at the bottom part due to the pressing is pushed to the punch tip. Since the pad is pressed against the provided expanded surface area and brought into close contact with this, the excess thickness of the blank plate that occurs at the shoulder of the shaped product can be absorbed into the shape of the shaped product itself during the -th drawing process. This has the excellent effect of effectively preventing the occurrence of overlapping wrinkles caused by too much meat.
第１図は本発明に係る深絞り用工具の好適一実施例を示
す成形途中の要部断面図、第２図は同成形終期の要部断
面図、第３図は同成形完了後の形状品肩部の種々変形例
を示す断面図、第４図は従来の深絞り用工具を示す成形
始期の要部断面図、第５図は第４図による深絞り用工具
によって絞り成形されたオイルパンの斜視図、第６図は
第５図Ａ部の拡大断面図である。
図中、１５はポンチ、１７はダイス、１８は接触子、１
９はパッド、２０はポンチ先端の丸み部、２１はポンチ
先端に設けた表面積拡大部の例示である凹部、２６は倣
い面、２８はパッドに設けた凸部、３０は素板の例示で
ある制振鋼板、３１は肉あまり部、２４はダイスの一側
に設けた孔、２５は弾圧手段である。
特許出願人 いすず自動車株式会社
東京ラヂエーター製造株式会社
代理人弁理士 絹 谷 信 雄
第１図Fig. 1 is a cross-sectional view of the main part in the middle of forming, showing a preferred embodiment of the deep drawing tool according to the present invention, Fig. 2 is a cross-sectional view of the main part at the end of the forming, and Fig. 3 is the shape after the forming is completed. 4 is a sectional view showing various modifications of the product shoulder, FIG. 4 is a sectional view of the main part at the beginning of forming, showing a conventional deep drawing tool, and FIG. 5 is oil drawn by the deep drawing tool shown in FIG. 4. A perspective view of the bread, FIG. 6 is an enlarged sectional view of section A in FIG. 5. In the figure, 15 is a punch, 17 is a die, 18 is a contact, 1
9 is a pad, 20 is a rounded portion at the tip of the punch, 21 is a concave portion which is an example of a surface area enlargement portion provided at the tip of the punch, 26 is a tracing surface, 28 is a convex portion provided on the pad, and 30 is an example of a blank plate. A damping steel plate, 31 is an excess wall thickness, 24 is a hole provided on one side of the die, and 25 is a pressure means. Patent applicant: Isuzu Motors Co., Ltd. Tokyo Radiator Manufacturing Co., Ltd. Representative patent attorney: Nobuo Kinutani Figure 1
Claims (5)
チとダイスとの相対運動により上記ポンチ先端の丸み部
で押し曲げられる素板をボンデに強圧してしごき上げる
接触子と、該接触子によりしごき上げられた素板の肉あ
まり部をポンチ先端に設けた上記表面積拡大部に押し付
けこれに密接させるパッドとを備えてなることを特徴と
する深絞り用工具。(1) A punch having a surface area enlarged portion at its tip, a contact that presses against a bonder a blank plate that is pressed and bent by the rounded portion of the punch tip due to the relative movement between the punch and the die, and the contact. A deep drawing tool characterized by comprising a pad that presses the excess thickness of the pressed blank plate against the expanded surface area provided at the tip of the punch and brings it into close contact with the expanded surface area.
る特許請求の範囲第１項記載の深絞り用工具。(2) The deep drawing tool according to claim 1, wherein the surface area enlarged portions are four.
る特許請求の範囲第１項記載の深絞り用工具。(3) The deep drawing tool according to claim 1, wherein the surface area enlarging portion is a convex portion.
とする特許請求の範囲第１項記載の深絞り用工具。(4) The deep drawing tool according to claim 1, wherein the surface area enlarging portion is comprised of an uneven portion.
スの一側に設けた孔に摺動自在に嵌合され、その後面を
ポンチ先端の丸み部方向に付勢する弾圧手段に弾持され
、その前面にポンチ先端の丸み部に倣う倣い面を有して
いることを特徴とする特許請求の範囲第１項、第２項、
第３項又は第４項記載の深絞り用工具。 ［Ｆ］） 上記倣い面がダイスの移動方向に連設して２
つあることを特徴とする特許請求の範囲第５項記載の深
絞り用工具。(5) The above-mentioned contact is slidably fitted into a hole provided on one side of the die facing the rounded part of the punch tip, and is resiliently supported by a pressing means that urges the rear surface toward the rounded part of the punch tip. Claims 1 and 2, characterized in that it has a tracing surface that follows the rounded part of the punch tip on its front surface.
The deep drawing tool according to item 3 or 4. [F]) The above tracing surface is connected in the direction of movement of the die.
The deep drawing tool according to claim 5, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59087755A JPS60231529A (en) | 1984-05-02 | 1984-05-02 | Tool for deep drawing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59087755A JPS60231529A (en) | 1984-05-02 | 1984-05-02 | Tool for deep drawing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60231529A true JPS60231529A (en) | 1985-11-18 |
Family
ID=13923757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59087755A Pending JPS60231529A (en) | 1984-05-02 | 1984-05-02 | Tool for deep drawing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60231529A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2646623A1 (en) * | 1989-05-03 | 1990-11-09 | Peugeot | Press tool for deep-drawing slightly shaped workpieces |
| DE10322272A1 (en) * | 2003-05-16 | 2004-12-02 | Nothelfer Gmbh | Deep drawing procedure for sheet metals, involves pressing area of sheet metal between outer edge of pulling stamp and radius section of die plate in direction of steep edge region of pulling stamp |
| DE102010018534A1 (en) * | 2010-04-27 | 2011-10-27 | Läpple Werkzeugbau GmbH | Device for molding a workpiece |
-
1984
- 1984-05-02 JP JP59087755A patent/JPS60231529A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2646623A1 (en) * | 1989-05-03 | 1990-11-09 | Peugeot | Press tool for deep-drawing slightly shaped workpieces |
| DE10322272A1 (en) * | 2003-05-16 | 2004-12-02 | Nothelfer Gmbh | Deep drawing procedure for sheet metals, involves pressing area of sheet metal between outer edge of pulling stamp and radius section of die plate in direction of steep edge region of pulling stamp |
| DE102010018534A1 (en) * | 2010-04-27 | 2011-10-27 | Läpple Werkzeugbau GmbH | Device for molding a workpiece |
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