JPH0413049B2 - - Google Patents
Info
- Publication number
- JPH0413049B2 JPH0413049B2 JP58177856A JP17785683A JPH0413049B2 JP H0413049 B2 JPH0413049 B2 JP H0413049B2 JP 58177856 A JP58177856 A JP 58177856A JP 17785683 A JP17785683 A JP 17785683A JP H0413049 B2 JPH0413049 B2 JP H0413049B2
- Authority
- JP
- Japan
- Prior art keywords
- punch
- blank
- die
- deep drawing
- pressing body
- 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.)
- Expired - Lifetime
Links
- 238000003825 pressing Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 description 13
- 239000002184 metal Substances 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 229910001128 Sn alloy Inorganic materials 0.000 description 2
- XNFDWBSCUUZWCI-UHFFFAOYSA-N [Zr].[Sn] Chemical compound [Zr].[Sn] XNFDWBSCUUZWCI-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 239000003758 nuclear fuel Substances 0.000 description 2
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は、深絞り箇所を取り囲む押圧体によつ
てブランク（板金）がダイスに押圧されている状
態でポンチによつてダイスの中にブランクを深絞
りする方法と、この方法を実施するための装置に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for deep drawing a blank (sheet metal) into a die using a punch while the blank (sheet metal) is pressed against the die by a pressing body surrounding the deep drawing location; It relates to an apparatus for carrying out this method.
かかる方法は既に一般に行われている。この場
合押圧体は冷状態でポンチによつて深絞りされる
ブランクに対するブランクホルダとして作用す
る。ブランクホルダとして作用する押圧体がダイ
スに押付けられ圧力は、ブランクがその深絞り性
を改善するために深絞り箇所において可塑性を付
与される程度に大きく決められる。 Such methods are already commonly practiced. In this case, the pressing body acts as a blank holder for the blank which is deep drawn by means of a punch in the cold state. The pressure with which the pressing body acting as a blank holder is pressed against the die is determined to be large enough to impart plasticity to the blank at the deep drawing point in order to improve its deep drawability.
しかしこの一般的な方法では、特に絞り深さが
比較的大きい場合には亀裂のない深絞りはできな
い。 However, this common method does not allow crack-free deep drawing, especially when the drawing depth is relatively large.
本発明の目的は、非常に深い深絞りもブランク
に亀裂を生ずることなしに実施できるようなブラ
ンクの深絞り方法を得ることにある。 SUMMARY OF THE INVENTION The object of the invention is to provide a method for deep drawing a blank, which allows very deep drawings to be carried out without cracking the blank.
本発明によればこの目的は、ダイスによつて形
成された窪みの中にその長手軸心方向に移動でき
るポンチによつてブランクを深絞りする方法にお
いて、ブランクが深絞り箇所を取り囲む押圧体に
よつて前記窪みに向けて押圧され、補助的にブラ
ンクが深絞り箇所の中心においてブランクの片側
にあるポンチとブランクの反対側にありその長手
軸心方向に移動できる対向ポンチとの間で締め付
けられ、ブランクの深絞り箇所がこの深絞り箇所
を通つて流れる電流によつて加熱され、そのため
の電流が、ポンチ又は対向ポンチとダイス又は押
圧体とを介して前記深絞り箇所を通して導かれる
ことによつて達成される。 According to the invention, this object is achieved in a method for deep drawing a blank by means of a punch which can be moved in the direction of its longitudinal axis into a recess formed by a die, in which the blank is pressed against a pressing body surrounding the deep drawing point. The blank is then pressed towards said recess, and the blank is additionally tightened in the center of the deep drawing point between a punch on one side of the blank and a counter punch on the opposite side of the blank which can be moved in the direction of its longitudinal axis. , the deep-drawn point of the blank is heated by an electric current flowing through this deep-drawn point, and the current for this purpose is conducted through said deep-drawn point via a punch or a counter-punch and a die or a pressing body. will be achieved.
このことによつてブランクは深絞り箇所が良好
に変形できる温度に局所的に加熱され、それによ
つて大きな絞り深さの場合も深絞り中における亀
裂の発生は防止される。本発明の方法によれば加
工すべきブランクの品質には実質的に無関係に亀
裂なしに深絞りを実施することができる。ブラン
クは局所的にかつ一時的に加熱されるだけてよい
ので、ブランクのスケールの発生および深絞り工
具の加熱は避けられる。 As a result, the blank is locally heated to a temperature at which the deep-drawing area can be well deformed, so that even at large drawing depths, the formation of cracks during deep-drawing is prevented. With the method of the invention, deep drawing can be carried out without cracking, essentially independent of the quality of the blank to be processed. Since the blank only needs to be heated locally and temporarily, scaling of the blank and heating of the deep drawing tool are avoided.
本発明に基づく方法を実施するための装置は、
ダイスによつて形成された窪みに、押圧体と、こ
の押圧体を貫通し電気絶縁して導かれその長手軸
心方向に移動できるポンチと、ダイスを貫通して
導かれダイスと押圧体に対して電気絶縁され且つ
前記ポンチに向かつてその長手軸心方向に移動で
きる対向ポンチとが付設され、電源に対する接続
端子の一方の接続端子がポンチ又は対向ポンチ
に、他方の接続端子がダイス又は押圧体に設けら
れていることを特徴としている。 The apparatus for carrying out the method according to the invention comprises:
In the depression formed by the die, a pressing body, a punch that penetrates the pressing body and is guided in an electrically insulated manner and can move in the direction of its longitudinal axis, and a punch that penetrates the die and is guided against the die and the pressing body. An opposing punch which is electrically insulated and movable in the longitudinal axis direction toward the punch is attached, one of the connecting terminals to the power source is connected to the punch or the opposing punch, and the other connecting terminal is connected to the die or the pressing body. It is characterized by being provided in.
以下図面に示す実施例に基づいて本発明を詳細
に説明する。 The present invention will be described in detail below based on embodiments shown in the drawings.
第１図は金属製たとえば鋼製のダイス２を示
し、これはたとえば鋼製の金属台座３に形成され
ている。このダイス２は垂直軸心４を有してい
る。このダイス２に対して金属製たとえば鋼製の
細長い円筒状ポンチ５が同心的にかつその長手方
向に移動できるように配置されている。このポン
チ５はモリブデン製の環状押圧体６内を案内さ
れ、この押圧体６はダイス２に対して同心的にか
つこのダイス２に対向して配置されている。 FIG. 1 shows a die 2 made of metal, for example steel, which is formed on a metal base 3 made of steel, for example. This die 2 has a vertical axis 4. An elongated cylindrical punch 5 made of metal, for example steel, is disposed so as to be movable concentrically and in the longitudinal direction of the die 2. This punch 5 is guided in an annular pressing body 6 made of molybdenum, and this pressing body 6 is arranged concentrically with and opposite the die 2 .
ダイス２に対して同心的な金属台座３の貫通孔
３ａ内には細長いモリブデン製の円筒状対向ポン
チ７が配置されている。この対向ポンチ７はダイ
ス２に対して同心的に位置し、ポンチ５に対して
その長手軸心方向に移動できるようにされる。対
向ポンチ７は金属台座３に対して貫通孔３ａの中
にはめ込まれたたとえばセラミツク材料製の絶縁
プツシユ８によつて電気的に絶縁されている。同
じようにしてポンチ５も押圧体６およびダイス２
をもつた金属台座３に対して電気的に絶縁されて
いる。対向ポンチ７のポンチ５に向かう移動は、
対向ポンチ７にあるフランジ７ａによつて制限さ
れており、このフランジで対向ポンチ７はブツシ
ユ８の外面に当つている。ブツシユ８も同様に金
属台座３に埋設されているフランジ８ａによつて
ポンチ５に向かう移動が防止されている。 An elongated cylindrical facing punch 7 made of molybdenum is disposed within a through hole 3a of a metal base 3 concentric with the die 2. This opposing punch 7 is located concentrically with respect to the die 2 and is movable relative to the punch 5 in the direction of its longitudinal axis. The counter punch 7 is electrically insulated from the metal base 3 by an insulating pusher 8 made of, for example, a ceramic material and fitted into the through hole 3a. In the same way, the punch 5 also has a pressing body 6 and a die 2.
It is electrically insulated from the metal pedestal 3 having a The movement of the opposing punch 7 toward the punch 5 is as follows:
It is delimited by a flange 7a on the counter punch 7, at which it rests against the outer surface of the bush 8. The bush 8 is similarly prevented from moving toward the punch 5 by a flange 8a embedded in the metal base 3.
変圧器９の二次巻線はスイツチ１０を介してポ
ンチ５にある接続線およびダイス２の金属台座３
にある接続線にそれぞれ接続されている。 The secondary winding of the transformer 9 is connected via a switch 10 to the connecting wire in the punch 5 and the metal pedestal 3 of the die 2.
Each is connected to the connecting wire located at
ポンチ５およびそれに対応する対向ポンチ７は
それぞれたとえば図示していない空気圧式シリン
ダによつてその長手軸心方向に駆動される、両空
気圧式シリンダは図示していないスタンドに固く
取り付けられ、このスタンドには金属台合３も取
り付けられている。一方の空気圧式シリンダはポ
ンチ５に対向ポンチ７に向けられた圧力F5をポ
ンチ５の長手軸心方向に与え、他方の空気圧式シ
リンダは対向圧力F7を対向ポンチ７にその長手
軸心方向に与える。 The punch 5 and the corresponding counter-punch 7 are each driven in the direction of their longitudinal axis, for example by a pneumatic cylinder (not shown), both pneumatic cylinders being rigidly mounted on a stand (not shown), on which 3 metal stands are also attached. One pneumatic cylinder applies to the punch 5 a pressure F 5 directed towards the counter punch 7 in the direction of its longitudinal axis, and the other pneumatic cylinder applies a counter pressure F 7 to the counter punch 7 in the direction of its longitudinal axis. give to
ジルコニウム−すず合金（ジルカロイ）から成
る厚さ0.55mmのブランク（板金）１１は、ダイス
２の片側にある平らな接触面２ａと環状押圧体６
の片側にある平らな接触面６ａとの間に配置さ
れ、押圧体６に接触面２ａと６ａに対して垂直方
向の圧力F6を付与する図示していない圧縮装置
によつて、ダイス２の接触面２ａとブランク１１
との間に電気的な加圧接触を形成した状態におい
てダイス２に押圧される。それからポンチ５がブ
ランク１１の深絞り箇所１１ａの中心において圧
力F5でブランク１１に押圧され、対向ポンチ７
はフランジ７ａで圧力（F7−F5）によつてブツ
シユ８に押圧される。対向ポンチにおける対向圧
力F7はポンチ５における圧力F5よりも大きい。
それによつてポンチ５の端面における接触面５ａ
とブランク１１との間に十分な電気的加圧接触が
形成される。同時にブランク１１の深絞り箇所１
１ａがダイズ２に冷間絞りされることも避けられ
る。 A blank (sheet metal) 11 made of zirconium-tin alloy (Zircaloy) with a thickness of 0.55 mm is connected to a flat contact surface 2a on one side of a die 2 and an annular pressing body 6.
The die 2 is compressed by a compression device, not shown, which is arranged between the flat contact surface 6a on one side of the die 2 and which applies a pressure F 6 on the pressing body 6 in a direction perpendicular to the contact surfaces 2a and 6a. Contact surface 2a and blank 11
It is pressed against the die 2 in a state in which electrical pressure contact is formed between the two. Then the punch 5 is pressed against the blank 11 with a pressure F 5 in the center of the deep drawing point 11a of the blank 11, and the counter punch 7
is pressed against the bush 8 by pressure (F 7 −F 5 ) at the flange 7a. The opposing pressure F 7 in the opposing punch is greater than the pressure F 5 in the punch 5.
Thereby, the contact surface 5a on the end face of the punch 5
A sufficient electrical pressure contact is formed between the blank 11 and the blank 11 . At the same time, deep drawing point 1 of blank 11
Cold squeezing of 1a into soybeans 2 is also avoided.
次いでスイツチ１０が一時的に閉じられ、ブラ
ンク１１の深絞り箇所１１ａが電流で加熱され
る。この電流はポンチ５のブランク１１との接触
面５ａとダイス２のブランク１１との接触面２ａ
との間を均一に分布してブランク１１を通つて流
れ、ブランク１１を一様に加熱する。スイツチ１
０を開いた後、対向圧力F7が減少されあるいは
圧力F5が高められることによりブランク１１は
まだ熱い深絞り箇所１１ａにおいてダイス２の中
に深絞りされる。必要な場合にはこの深絞り工程
はスイツチ１０を閉じた状態においても、すなわ
ちブランク１１の深絞り箇所１１ａに連続的に電
流を流して加熱した状態において行うこともでき
る。最終的には深絞り箇所１１ａに第２図で示し
たようなくぼみ１１ｂが形成される。 The switch 10 is then temporarily closed and the deep drawing area 11a of the blank 11 is heated with the electric current. This current is applied to the contact surface 5a of the punch 5 with the blank 11 and the contact surface 2a of the die 2 with the blank 11.
and flows through the blank 11 in a uniform distribution between the blanks 11 and uniformly heats the blanks 11. switch 1
After opening 0, the blank 11 is deep-drawn into the die 2 at the still-hot deep-drawing point 11a by reducing the counterpressure F 7 or increasing the pressure F 5 . If necessary, this deep drawing step can also be carried out with the switch 10 closed, that is, with the deep drawing part 11a of the blank 11 heated by continuous current flow. Finally, a recess 11b as shown in FIG. 2 is formed in the deep drawn portion 11a.
上述の厚さ0.55mmのジルコニウム−すず合金製
のブランクにおいて、このようにして深さ1.6mm
で直径5.5mmの亀裂のないくぼみ１１ｂが作られ
る。かかるくぼみ１１ｂをもつた板金は、原子炉
燃料が詰められている燃料棒が外側でこの突起に
接するような原子炉燃料集合体におけるスペーサ
を製造するために用いられる。 In the 0.55 mm thick zirconium-tin alloy blank described above, a depth of 1.6 mm is thus obtained.
A crack-free depression 11b with a diameter of 5.5 mm is created. A sheet metal with such a recess 11b is used for manufacturing a spacer in a nuclear reactor fuel assembly, in which the fuel rods filled with reactor fuel contact this protrusion on the outside.
第１図は本発明に基づく深絞り方法を実施する
ための装置の概略断面図、第２図は本発明の方法
によつて深絞りされたブランクの部分断面図であ
る。
２……ダイス、５……ポンチ、６……押圧体、
７……対向ポンチ、９……変圧器、１０……スイ
ツチ、１１……ブランク、１１ａ……深絞り箇
所。
FIG. 1 is a schematic sectional view of an apparatus for carrying out the deep drawing method according to the invention, and FIG. 2 is a partial sectional view of a blank deep drawn by the method of the invention. 2... Dice, 5... Punch, 6... Pressing body,
7... opposed punch, 9... transformer, 10... switch, 11... blank, 11a... deep drawing point.
Claims (1)
長手軸心方向に移動できるポンチ５によつてブラ
ンク１１を深絞りする方法において、ブランク１
１が深絞り箇所１１ａを取り囲む押圧体６によつ
て前記窪みに向けて押圧され、補助的にブランク
１１が深絞り箇所１１ａの中心においてブランク
１１の片側にあるポンチ５とブランク１１の反対
側にありその長手軸心方向に移動できる対向ポン
チ７との間で締め付けられ、ブランク１１の深絞
り箇所１１ａがこの深絞り箇所１１ａを通つて流
れる電流によつて加熱され、そのための電流が、
ポンチ５又は対向ポンチ７とダイス２又は押圧体
６とを介して前記深絞り箇所１１ａを通して導か
れることを特徴とするブランクの深絞り方法。 ２ ダイス２によつて形成された窪みに、押圧体
６と、この押圧体６を貫通し電気絶縁して導かれ
その長手軸心方向に移動できるポンチ５と、ダイ
ス２を貫通して導かれダイス２と押圧体６に対し
て電気絶縁され且つ前記ポンチ５に向かつてその
長手軸心方向に移動できる対向ポンチ７とが付設
され、電源に対する一方の接続端子がポンチ５又
は対向ポンチ７に、他方の接続端子がダイス２又
は押圧体６に設けられていることを特徴とするブ
ランクの深絞り装置。[Claims] 1. A method of deep drawing a blank 11 by means of a punch 5 movable in the direction of its longitudinal axis into a recess formed by a die 2.
1 is pressed toward the recess by a pressing body 6 surrounding the deep drawing area 11a, and the blank 11 is auxiliary pressed against the punch 5 on one side of the blank 11 in the center of the deep drawing area 11a and on the opposite side of the blank 11. The deep drawing part 11a of the blank 11 is heated by the current flowing through the deep drawing part 11a, and the current for this purpose is
A method for deep drawing a blank, characterized in that the blank is guided through the deep drawing location 11a via a punch 5 or an opposed punch 7 and a die 2 or a pressing body 6. 2. In the depression formed by the die 2, a press body 6, a punch 5 that penetrates the press body 6, is guided in an electrically insulated manner, and is movable in the direction of its longitudinal axis, and a punch 5 that penetrates the die 2 and is guided. An opposing punch 7 is attached which is electrically insulated from the die 2 and the pressing body 6 and is movable in the longitudinal axis direction toward the punch 5, and one connection terminal to the power source is connected to the punch 5 or the opposing punch 7. A blank deep drawing device characterized in that the other connecting terminal is provided on the die 2 or the pressing body 6.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3235716.8 | 1982-09-27 | ||
| DE3235716 | 1982-09-27 | ||
| DE3325820.1 | 1983-07-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5978733A JPS5978733A (en) | 1984-05-07 |
| JPH0413049B2 true JPH0413049B2 (en) | 1992-03-06 |
Family
ID=6174259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58177856A Granted JPS5978733A (en) | 1982-09-27 | 1983-09-26 | Method and device for deep-drawing blank |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5978733A (en) |
| BE (1) | BE897803A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013012684A1 (en) * | 2013-07-31 | 2015-02-05 | Allgaier Werke Gmbh | Device for forming metals |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5130864A (en) * | 1974-09-10 | 1976-03-16 | Nat Aerospace Lab | CHUGATABUTSUNOCHUKUBUSEIKEIHOHO OYOBI NAKAGO |
| JPS5644132A (en) * | 1979-09-14 | 1981-04-23 | Toshiba Corp | Auto reverse unit with program searching mechanism |
-
1983
- 1983-09-22 BE BE0/211564A patent/BE897803A/en not_active IP Right Cessation
- 1983-09-26 JP JP58177856A patent/JPS5978733A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5130864A (en) * | 1974-09-10 | 1976-03-16 | Nat Aerospace Lab | CHUGATABUTSUNOCHUKUBUSEIKEIHOHO OYOBI NAKAGO |
| JPS5644132A (en) * | 1979-09-14 | 1981-04-23 | Toshiba Corp | Auto reverse unit with program searching mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5978733A (en) | 1984-05-07 |
| BE897803A (en) | 1984-01-16 |
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