JP2539618B2 - Double-sided iron drawing machine - Google Patents
Double-sided iron drawing machineInfo
- Publication number
- JP2539618B2 JP2539618B2 JP62082049A JP8204987A JP2539618B2 JP 2539618 B2 JP2539618 B2 JP 2539618B2 JP 62082049 A JP62082049 A JP 62082049A JP 8204987 A JP8204987 A JP 8204987A JP 2539618 B2 JP2539618 B2 JP 2539618B2
- Authority
- JP
- Japan
- Prior art keywords
- die
- contact portion
- double
- residual stress
- workpiece
- 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
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、両面しごき絞り加工装置に関し、詳しくは
被加工物体の周方向残留応力分布を制御できる両面しご
き絞り加工装置に関する。Description: TECHNICAL FIELD The present invention relates to a double-sided ironing and drawing apparatus, and more particularly to a double-sided ironing and drawing apparatus capable of controlling a circumferential residual stress distribution of an object to be processed.
（従来技術） しごき絞り加工は、ビール、炭酸飲料、果汁等の缶類
や複写機のローラー等の工業製品の製造に広く利用され
ている。(Prior Art) The ironing and drawing process is widely used in the manufacture of cans such as beer, carbonated drinks, fruit juices, and industrial products such as rollers of copying machines.
従来のしごき絞り加工は、第２図に示すように、被加
工物体の片面のみをしごく絞り加工法である。すなわ
ち、プレスや絞り等の加工方法によってあらかじめ筒形
状に成形した被加工物体１を、ダイス２とポンチ３の間
で押引し、被加工物体の外側面（片面）のみをしごき、
加工前の胴部の板厚を薄くする成形方法である。2. Description of the Related Art As shown in FIG. 2, conventional ironing and drawing is an ironing and drawing method in which only one side of an object to be processed is drawn. That is, an object 1 previously formed into a cylindrical shape by a processing method such as pressing or drawing is pushed and pulled between a die 2 and a punch 3, and only the outer surface (one side) of the object is ironed.
This is a forming method for reducing the thickness of the body before processing.
（発明が解決しようとする問題点） しかし、この従来の片面しごき絞り加工方法では、被
加工物体の外側面（片面）のみをダイスでしごくため、
被加工物体の周方向の残留応力分布の向き（引張側また
は圧縮側）と大きさを制御することは非常に困難であっ
た。(Problems to be Solved by the Invention) However, in this conventional single-sided ironing drawing method, only the outer surface (one side) of the workpiece is pressed with a die,
It has been very difficult to control the direction (tensile side or compressive side) and magnitude of the residual stress distribution in the circumferential direction of the workpiece.
（問題点を解決するための手段） 本発明者等は、第３図に示すように、外ダイス４と内
ダイス５を用いて、被加工物体１の外側面と内側面の両
面からしごき絞り加工を行う装置を創案し、特許出願を
行った（特願昭61−78464号（特公平７−115089
号））。この両面しごき絞り加工は、加工精度の向上、
しごき率の向上など生産性を高める効果を有する。(Means for Solving the Problems) As shown in FIG. 3, the present inventors use an outer die 4 and an inner die 5 to draw the iron from both the outer surface and the inner surface of the workpiece 1 by pressing. A device for processing was invented and a patent application was filed (Japanese Patent Application No. 61-78464 (Japanese Patent Application No. 7-115089).
issue)). This double-sided ironing and drawing process improves processing accuracy,
It has the effect of increasing productivity, such as improving the ironing rate.
更に、本発明者等は、この両面しごき絞り加工法につ
いて鋭意開発研究を重ねた結果、外ダイスに対する内ダ
イスの設置条件によって、被加工物体の周方向の残留応
力分布の向きと大きさを自由に制御し得ることを見いだ
した。Furthermore, the present inventors have conducted intensive research on this double-sided ironing and drawing method, and as a result, the direction and magnitude of the circumferential residual stress distribution of the object to be processed can be freely adjusted depending on the installation condition of the inner die with respect to the outer die. To be controlled.
本発明は、この知見に基づくものであって、両面しご
き絞り加工装置において、開口を有し、この開口の周囲
に被加工物体の外側面に当接する曲率を有する外側当接
部が設けられた外ダイス、この外ダイスの開口を貫通し
前記被加工物体を押引するポンチ、このポンチに摺動可
能に嵌合し、前記被加工物体の内側面に当接する曲率を
有する内側当接部が設けられた内ダイス、および、前記
外ダイスの外側当接部と前記内ダイスの内側当接部の相
対位置を軸方向にずらして規制する規制手段からなるこ
とを特徴とする。The present invention is based on this finding and, in a double-sided ironing and drawing apparatus, has an opening, and an outer contact portion having a curvature contacting the outer surface of the object to be processed is provided around the opening. An outer die, a punch that penetrates through the opening of the outer die and pushes and pulls the workpiece, an inner contact portion having a curvature that slidably fits the punch and abuts on an inner surface of the workpiece. It is characterized by comprising an inner die provided and a restricting means for restricting the relative position of the outer contact portion of the outer die and the inner contact portion of the inner die by shifting the relative position in the axial direction.
（作 用） 本発明においては、外ダイスの外側当接部に対して内
ダイスの内側当接部をポンチ進入方向と反対側（プラス
方向）にずらすほど、被加工物体の周方向の残留応力分
布の向きと大きさをそれぞれ引っ張り応力側に大きく制
御して発生させることができる。反対に外ダイスの外側
当接部に対して内ダイスの内側当接部をポンチ進入方向
（マイナス方向）にずらすほど、被加工物体の周方向の
残留応力分布の向きと大きさをそれぞれ圧縮応力側に大
きく制御して発生させることができる。(Operation) In the present invention, the more the inner contact portion of the inner die is displaced in the opposite direction (positive direction) to the punch entry direction with respect to the outer contact portion of the outer die, the more the residual stress in the circumferential direction of the object to be processed. The direction and magnitude of the distribution can be generated by largely controlling them on the tensile stress side. Conversely, the more the inner contact part of the inner die is shifted in the direction of approaching the punch (minus direction) with respect to the outer contact part of the outer die, the more the direction and magnitude of the residual stress distribution in the circumferential direction of the workpiece are changed by compressive stress. It can be generated with a large control on the side.
（発明の効果） 本発明によれば、被加工物体の周方向の残留応力分布
の向きと大きさを容易に制御して発生させることができ
る。したがって、被加工物体の加工目的（用途）に応じ
て、残留応力分布の向きを引っ張り応力側にまたは圧縮
応力側になるよう適宜選択することにより、生産性を向
上させることができる。例えば、シリンダーは圧縮残留
応力状態を有し、ピストンは引っ張り残留応力状態を有
することが望ましいが、現在は、ピストンにピストンリ
ングを用いて上記の応力状態をつくっている。本発明に
よればシリンダーあるいはピストンに必要とする応力状
態をつくることができ、それらの安全率の補強に利用で
き生産性の向上につながる。また缶類などの容器では、
肉厚を厚くすることによって耐圧に対応しているが、本
発明によれば、容器の胴部の残留応力状態のコントロー
ルと共に耐圧強度も補強できるので、肉厚を従来より一
層薄く製作でき製品のコストダウンをもたらす。(Effects of the Invention) According to the present invention, it is possible to easily control and generate the direction and magnitude of the residual stress distribution in the circumferential direction of the workpiece. Therefore, the productivity can be improved by appropriately selecting the direction of the residual stress distribution to be on the tensile stress side or the compressive stress side according to the processing purpose (use) of the object to be processed. For example, it is desirable for a cylinder to have a compressive residual stress state and for a piston to have a tensile residual stress state, but at present, the above-mentioned stress state is created by using a piston ring for the piston. According to the present invention, a stress state required for a cylinder or a piston can be created, which can be used to reinforce the safety factor thereof, leading to an improvement in productivity. In containers such as cans,
According to the present invention, it is possible to control the residual stress state of the body of the container and to reinforce the pressure resistance. Brings down costs.
（実施例） 第１図は本発明の加工装置の一例を断面で示す正面図
である。(Embodiment) FIG. 1 is a front view showing a cross section of an example of the processing apparatus of the present invention.
外ダイス４は、開口を有し、この開口の周囲に被加工
物体１の外側面に当接する曲率Ｒを有する外側当接部
４′を設けられており、支持台６に外ダイス固定具７に
よって固定されている。ポンチ３は外ダイスの開口を貫
通して被加工物体１を押引する。内ダイス５は、被加工
物体の内側面に当接する曲率ｒを有する内側当接部５′
が設けられている。なお、ここでは、内ダイス５は、ポ
ンチ３に摺動可能に嵌合し端部にねじを有する内ダイス
ホルダー８を介して取り付けられている。９は内ダイス
案内具、10は被加工物体のガイドリングをそれぞれ示
す。外ダイスの外側当接部４′と内ダイスの内側当接部
５′の関係位置を軸方向にずらす度合いは、内ダイス案
内具９と外ダイス固定具７との間に挿入するスペーサー
11の厚みを変えることによって行う。The outer die 4 has an opening, and an outer contact portion 4 ′ having a curvature R contacting the outer surface of the workpiece 1 is provided around the opening. Has been fixed by. The punch 3 pushes and pulls the workpiece 1 through the opening of the outer die. The inner die 5 has an inner contact portion 5 ′ having a curvature r that abuts on the inner surface of the object to be processed.
Is provided. Here, the inner die 5 is attached via an inner die holder 8 which is slidably fitted to the punch 3 and has a screw at an end. Reference numeral 9 denotes an inner die guide, and reference numeral 10 denotes a guide ring for a workpiece. The degree to which the relative position between the outer contact portion 4 'of the outer die and the inner contact portion 5' of the inner die is shifted in the axial direction is determined by a spacer inserted between the inner die guide 9 and the outer die fixture 7.
This is done by changing the thickness of 11.
第１図の装置を用い、被加工物体として前段加工した
軟鋼板の円筒容器（外径50mm、高さ50mm、厚みt0＝0.8m
m）をしごき率（t0−t/t0×100％）20％で加工を行っ
た。Using the apparatus of FIG. 1, a cylindrical container (outer diameter 50mm mild steel plate having front machining as workpiece object, height 50mm, thickness t 0 = 0.8 m
m) was worked at an ironing rate (t 0 −t / t 0 × 100%) of 20%.
第４図に加工後の円筒容器の円周方向の残留応力分布
を示す。比較のため、従来の片面しごき絞り加工（第２
図）によって得られた結果を併せて示す。残留応力は、
片面しごきの場合は０レベルより下方（圧縮応力側）
に、本発明の両面しごきの場合は上方（引張応力側）に
分布している。２つのしごき方法の特徴を示す典型的な
パターンである。FIG. 4 shows the residual stress distribution in the circumferential direction of the cylindrical container after processing. For comparison, conventional single-sided ironing and drawing (No. 2
Figure) also shows the results obtained. The residual stress is
In case of one-sided ironing, lower than 0 level (compressive stress side)
In the case of the double-sided ironing of the present invention, the distribution is higher (on the tensile stress side). 5 is a typical pattern showing the features of the two ironing methods.
第５図に、内・外ダイスの当接部５′と４′のずれを
種々変えた場合に得られた被加工物体の底面からの位置
における残留応力分布を示す。曲線ａ、ｂは内ダイスの
当接部が外ダイスの当接部に対してポンチ進入方向と反
対方向にそれぞれ0.8、0.5mmずれた場合（第6A図に対
応）、曲線ｃは内ダイスの当接触部が外ダイスの当接触
部とが一致する場合（第6B図に対応）、曲線ｄ、ｅは内
ダイスの当接部が外ダイスの当接部に対してポンチ進入
方向にそれぞれ0.5、0.8、1.0mmずれた場合（第6C図に
対応）を示している。残留応力は、ａ、ｂ、ｃ、ｄの場
合は引張応力側に、ｅ、ｆの場合は圧縮応力側に分布し
ている。これからも明らかなように、外ダイスに対する
内ダイスの設置条件によって、加工後の円筒容器の円周
方向の残留応力分布を容易に制御できることが判る。す
なわち、外ダイスの外側当接部４′に対して内ダイスの
内側当接部５′をポンチ進入方向と反対側（第6b図プラ
ス矢印方向）にずらすほど、残留応力分布の向きと大き
さをそれぞれ引張応力側に大きく制御して発生させるこ
とができる。反対に、外側当接部４′に対して内側当接
部５′をポンチ進入方向（第6b図マイナス矢印方向）に
ずらすほど、残留応力分布の向きと大きさをそれぞれ圧
縮応力側に大きく制御して発生させることができる。FIG. 5 shows the residual stress distribution at the position from the bottom surface of the workpiece obtained when the displacement between the contact portions 5 'and 4' of the inner and outer dies is variously changed. Curves a and b show the case where the contact portion of the inner die is shifted by 0.8 and 0.5 mm, respectively, in the direction opposite to the punch entry direction with respect to the contact portion of the outer die (corresponding to FIG. 6A). When the contact portion coincides with the contact portion of the outer die (corresponding to FIG. 6B), the curves d and e indicate that the contact portion of the inner die has a distance of 0.5 from the contact portion of the outer die in the punch approach direction. , 0.8 and 1.0 mm (corresponding to FIG. 6C). The residual stress is distributed on the tensile stress side in the case of a, b, c and d, and on the compressive stress side in the case of e and f. As is clear from this, it can be understood that the distribution of the residual stress in the circumferential direction of the processed cylindrical container can be easily controlled by the installation condition of the inner die with respect to the outer die. In other words, the more the inner contact portion 5 'of the inner die is shifted in the direction opposite to the punch entry direction (the plus arrow direction in FIG. 6b) with respect to the outer contact portion 4' of the outer die, the more the direction and magnitude of the residual stress distribution become. Can be largely controlled and generated on the tensile stress side. Conversely, the more the inner contact portion 5 'is shifted relative to the outer contact portion 4' in the punch entry direction (the direction of the minus arrow in FIG. 6b), the greater the direction and magnitude of the residual stress distribution are controlled toward the compressive stress side. Can be generated.
また、空間12に潤滑油など液圧を印加しながら本発明
を実施する場合には、しごきが安定し被加工物体の内外
の表面あらさを向上させることができる。Further, when the present invention is carried out while applying a liquid pressure such as a lubricating oil to the space 12, the ironing can be stabilized and the inner and outer surface roughness of the workpiece can be improved.
以上詳述したように、本発明によれば、加工後の被加
工物体の周方向の残留応力分布の向きと大きさを自由に
制御できるので、加工目的（用途）に応じて残留応力分
布の向きと大きさを適宜選択することにより、前述した
種々の工業製品の生産性を向上させることができる。As described in detail above, according to the present invention, the direction and magnitude of the circumferential residual stress distribution of the processed object after processing can be freely controlled, so that the residual stress distribution according to the processing purpose (application) can be controlled. By appropriately selecting the direction and size, the productivity of the various industrial products described above can be improved.
第１図は、本発明の両面しごき絞り加工装置の一例を断
面で示す正面図、第２図は従来の片面しごき絞り加工方
法の説明図、第３図は先頭の両面しごき絞り加工装置を
断面で示す正面図、第４図は両面しごき絞り加工と片面
しごき絞り加工により得られた円筒容器の円周方向の残
留応力分布を示すグラフ、第５図は本発明の実施例で得
られた円筒容器の円周方向の残留応力分布を示すグラ
フ、第６図は本発明の実施例における内・外ダイスの位
置関係を示す断面図。 （符号の説明） １……被加工物体、２……ダイス ３……ポンチ、４……外ダイス ４′……外側当接部、５……内ダイス ５′……内側当接部、６……支持台 ７……外ダイス固定具 ８……内ダイスホルダー ９……内ダイス案内具 10……ガイドリング、11……スペーサー 12……空間、Ｒ、ｒ……曲率FIG. 1 is a front view showing an example of a double-sided ironing and drawing apparatus of the present invention in cross section, FIG. 2 is an explanatory view of a conventional single-sided ironing and drawing method, and FIG. FIG. 4 is a graph showing the circumferential residual stress distribution of a cylindrical container obtained by double-sided ironing and single-sided ironing, and FIG. 5 is a cylinder obtained by an embodiment of the present invention. FIG. 6 is a graph showing the residual stress distribution in the circumferential direction of the container. FIG. 6 is a sectional view showing the positional relationship between the inner and outer dies in the embodiment of the present invention. (Explanation of reference numerals) 1... Workpiece object 2... Die 3... Punch 4... Outer die 4 ′... Outer contact portion 5... Inner die 5 ′. ...... Support 7 ...... Outer die fixture 8 ...... Inner die holder 9 ...... Inner die guide 10 ...... Guide ring, 11 ...... Spacer 12 ...... Space, R, r ...... Curvature
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２１Ｄ 22/28 Ｂ２１Ｄ 22/28 Ｌ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification number Agency reference number FI Technical display location B21D 22/28 B21D 22/28 L
Claims (1)
の外側面に当接する曲率を有する外側当接部が設けられ
た外ダイス、 この外ダイスの開口を貫通し前記被加工物体を押引する
ポンチ、 このポンチに摺動可能に嵌合し、前記被加工物体の内側
面に当接する曲率を有する内側当接部が設けられた内ダ
イス、および、 前記外ダイスの外側当接部と前記内ダイスの内側当接部
の相対位置を軸方向にずらして規制する規制手段からな
る両面しごき絞り加工装置。An outer die having an opening and an outer contact portion having a curvature surrounding the opening and abutting on an outer surface of the object to be processed; An inner die that is slidably fitted to the punch and provided with an inner abutting portion having a curvature that abuts on an inner surface of the workpiece; and an outer abutment of the outer die. A double-sided ironing and drawing apparatus comprising a regulating means for regulating the relative position of the portion and the inner contact portion of the inner die by shifting in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62082049A JP2539618B2 (en) | 1987-04-02 | 1987-04-02 | Double-sided iron drawing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62082049A JP2539618B2 (en) | 1987-04-02 | 1987-04-02 | Double-sided iron drawing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63248521A JPS63248521A (en) | 1988-10-14 |
| JP2539618B2 true JP2539618B2 (en) | 1996-10-02 |
Family
ID=13763654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62082049A Expired - Lifetime JP2539618B2 (en) | 1987-04-02 | 1987-04-02 | Double-sided iron drawing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2539618B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002192249A (en) * | 2000-12-28 | 2002-07-10 | Inst Of Physical & Chemical Res | Double-sided coincidental ironing and deep drawing method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002192250A (en) | 2000-12-28 | 2002-07-10 | Inst Of Physical & Chemical Res | Mold for ironing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS617846A (en) * | 1984-06-22 | 1986-01-14 | Hitachi Metals Ltd | Toner for developing electrostatic charge image |
-
1987
- 1987-04-02 JP JP62082049A patent/JP2539618B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS617846A (en) * | 1984-06-22 | 1986-01-14 | Hitachi Metals Ltd | Toner for developing electrostatic charge image |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002192249A (en) * | 2000-12-28 | 2002-07-10 | Inst Of Physical & Chemical Res | Double-sided coincidental ironing and deep drawing method |
| JP4537571B2 (en) * | 2000-12-28 | 2010-09-01 | 独立行政法人理化学研究所 | Deep drawing method on both sides simultaneously |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63248521A (en) | 1988-10-14 |
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