JPH0562006B2 - - Google Patents
Info
- Publication number
- JPH0562006B2 JPH0562006B2 JP8019585A JP8019585A JPH0562006B2 JP H0562006 B2 JPH0562006 B2 JP H0562006B2 JP 8019585 A JP8019585 A JP 8019585A JP 8019585 A JP8019585 A JP 8019585A JP H0562006 B2 JPH0562006 B2 JP H0562006B2
- Authority
- JP
- Japan
- Prior art keywords
- metal plate
- hole
- punching
- female
- die
- 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 - Fee Related
Links
- 239000002184 metal Substances 0.000 claims description 27
- 238000004080 punching Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Punching Or Piercing (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は金属板の打抜き装置に係り、特にステ
ンレス鋼板など意匠品に用いられる金属板に好適
な金属板の打抜き装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a metal plate punching apparatus, and more particularly to a metal plate punching apparatus suitable for metal plates used for design products such as stainless steel plates.
一般に、金属板に穴を形成する場合、雄型と雌
型とによつて打抜いているが、打抜き時に穴の周
辺で材料の塑性流動が生じ、その結果穴の周囲に
ゆがみが生じている。
Generally, when forming a hole in a metal plate, it is punched using a male die and a female die, but during punching, plastic flow of the material occurs around the hole, resulting in distortion around the hole. .
この打抜き時の材料の塑性流動を少なくするた
めに、雌型の穴の周囲に断面三角形の環状突起を
設けている。 In order to reduce the plastic flow of the material during punching, an annular projection with a triangular cross section is provided around the female hole.
（特開昭57−58928号広報）
〔発明が解決しようとする課題〕
上記従来の打抜き装置は、打抜き時に生ずる材
料の塑性流動について考慮されているが、金属板
の押える時の材料の塑性流動については配慮され
ておらず、打抜き前既に打抜きすべき穴の周囲に
ゆがみが生じる問題がある。 (Unexamined Japanese Patent Publication No. 57-58928) [Problems to be Solved by the Invention] The conventional punching apparatus described above takes into consideration the plastic flow of the material that occurs during punching, but the plastic flow of the material that occurs when pressing the metal plate is However, there is a problem in that distortion occurs around the hole to be punched even before punching.
本発明の目的は、穴の打抜き工程中に金属板に
ゆがみを発生するような材料の塑性流動を少なく
した金属板の打抜き装置を提供することにある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a metal plate punching apparatus that reduces plastic flow of material that causes distortion in the metal plate during the hole punching process.
本発明は上記目的を達成するために、雌型の穴
の周りで板押えと対向する位置に、外周が垂直で
内周に傾斜を有する断面直角三角形の環状突起を
設けたのである。
In order to achieve the above object, the present invention provides an annular protrusion having a right triangular cross section with a vertical outer periphery and an inclined inner periphery at a position facing the plate holder around the female hole.
上記構成とすることにより、金属板を押えるた
め板押えを雌型側に押付けると環状突起が前記金
属板面に喰込む。このとき環状突起の喰込んだ分
だけ材料の塑性流動が生ずるが、前記環状突起の
外周は垂直となつているので、材料を外周へ押出
す作用はなく、材料の外周方向への塑性流動はな
い。一方、内周は傾斜しているので、材料は傾斜
に沿つて内周側へ塑性流動する。さらに、雌型に
よる穴の打抜きが始まると、雌型と穴近傍の材料
は外周側に流動しようとするが、そこには環状突
起があるので流動は抑制される。
With the above configuration, when the plate holder is pressed against the female mold side to hold down the metal plate, the annular protrusion bites into the metal plate surface. At this time, plastic flow of the material occurs due to the biting of the annular protrusion, but since the outer periphery of the annular protrusion is vertical, there is no action to push the material toward the outer periphery, and the plastic flow of the material toward the outer periphery does not occur. do not have. On the other hand, since the inner circumference is inclined, the material plastically flows toward the inner circumference along the inclination. Further, when punching of the hole by the female die begins, the material near the female die and the hole tends to flow toward the outer circumference, but the annular protrusion there prevents the flow.
したがつて、穴打抜き工程中、金属板に生ずる
材料の塑性流動は内周方向のみとなる。しかし、
この内周方向への塑性流動は、打抜かれて廃棄さ
れる側に生ずるので、製品として残す側には材料
の塑性流動はなく、ゆがみの発生はない。 Therefore, during the hole punching process, the plastic flow of the material that occurs in the metal plate is only in the inner circumferential direction. but,
This plastic flow in the inner circumferential direction occurs on the side that is punched and discarded, so there is no plastic flow of the material on the side that remains as a product, and no distortion occurs.
以下本発明の金属板の打抜き装置の一実施例を
第１図から第３図によつて説明する。大きく分け
て、打抜き装置は、上型Ａと下型Ｂとで構成され
ている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the metal plate punching apparatus of the present invention will be described below with reference to FIGS. 1 to 3. Broadly speaking, the punching device is composed of an upper die A and a lower die B.
上型Ａは、雌型１と、この雌型１を貫通する板
押え２と、これら雌型１と板押え２を保持するホ
ルダー３と、前記板押え２に押圧力を与えるため
の弾性体４とを有している。 The upper die A includes a female die 1, a plate holder 2 that passes through the female die 1, a holder 3 that holds the female die 1 and the plate holder 2, and an elastic body for applying a pressing force to the plate holder 2. 4.
前記下型Ｂは、前記雌型１を貫通する穴６と、
この穴６の周囲で前記板押え２と対向する位置に
設けた環状突起７を形成した雌型５を備えてい
る。 The lower mold B has a hole 6 penetrating the female mold 1;
A female mold 5 is provided around this hole 6 and has an annular projection 7 provided at a position facing the plate holder 2.
そして、前記環状突起７は、前記穴６の縁より
僅かに外径側に、位置して前記板押え２の押圧面
２Ｓに対向するようにし、かつ外周側に垂直な外
周壁７Ｂと内周側に傾斜壁７Ａを有する断面直角
三角形をなしている。 The annular protrusion 7 is located slightly on the outer diameter side from the edge of the hole 6 so as to face the pressing surface 2S of the plate holder 2, and is connected to an outer circumferential wall 7B perpendicular to the outer circumferential side and an inner circumference. It has a right triangular cross section with an inclined wall 7A on the side.
いま、第２図に示すように、意匠面８Ｄを有す
る金属板８の別の金属板９を重ねて同時打抜きに
より穴１０を形成しようとする場合、打抜き工程
中の材料の塑性流動によつて前記意匠面８Ｄにゆ
がみが生じてはいけない。しかし、本実施例によ
れば、ゆがみを発生することなく、穴の打抜きを
行うことができる。 Now, as shown in FIG. 2, when a metal plate 8 having a design surface 8D and another metal plate 9 are overlapped and a hole 10 is formed by simultaneous punching, due to the plastic flow of the material during the punching process, No distortion should occur on the designed surface 8D. However, according to this embodiment, the holes can be punched without causing distortion.
その穴の打抜き工程を第４図、第５図について
説明する。 The hole punching process will be explained with reference to FIGS. 4 and 5.
まず、上型Ａと下型Ｂとの間に金属板８，９を
配置し、板押え２を雌型５側に押付けることによ
り、前記両金属板８，９は雌型５と板押え２とで
押圧力P2，P3で挾持され固定される。この時、
第４図に示すように、雌型５の環状突起７は、下
側の金属板８に喰込む。そして、環状突起７が喰
込んだ分だけ材料は環状突起７の傾斜壁７Ａに沿
つて矢印L1のように内周方向に塑性流動し、前
記金属板８の環状突起７で囲まれた部分にゆがみ
を発生させる。尚、環状突起７の垂直壁７Ｂ側に
材料の斉性流動が発生しないのは、前記押圧力
P2の押圧方向と垂直壁７Ｂとが平行であるため
である。 First, the metal plates 8 and 9 are arranged between the upper mold A and the lower mold B, and the plate holder 2 is pressed against the female mold 5 side, so that both the metal plates 8 and 9 are connected to the female mold 5 and the plate holder. 2 and are clamped and fixed with pressing forces P 2 and P 3 . At this time,
As shown in FIG. 4, the annular projection 7 of the female die 5 bites into the lower metal plate 8. Then, the material flows plastically in the inner peripheral direction along the inclined wall 7A of the annular projection 7 as shown by the arrow L1 to the extent that the annular projection 7 bites into the portion of the metal plate 8 surrounded by the annular projection 7. causes distortion. Note that the reason why no uniform flow of material occurs on the vertical wall 7B side of the annular protrusion 7 is due to the above-mentioned pressing force.
This is because the pressing direction of P 2 and the vertical wall 7B are parallel.
上述のように、金属板８，９を固定した後、第
５図に示すように、雄型１を押圧力P1で下降さ
せて打抜き動作に入ると、前記環状突起７の内側
の傾斜壁７Ａ近傍の金属板８の材料は外周方向へ
矢印L2のように塑性流動する。しかし、流動方
向に環状突起７があるために、この流動は抑止さ
れる。この結果、第２図に示すように、金属板８
の意匠面８の打抜かれた穴１０の周囲にはゆがみ
の発生はなくなる。 As described above, after fixing the metal plates 8 and 9, as shown in FIG . The material of the metal plate 8 near 7A plastically flows in the direction of the outer periphery as indicated by arrow L2 . However, this flow is suppressed because of the annular protrusion 7 in the flow direction. As a result, as shown in FIG.
No distortion occurs around the punched hole 10 in the design surface 8.
尚、第１図において板押え２を弾性体４を介し
て駆動しているが、板押え２を上型Ａとは別個に
駆動する油圧機構を設けるようにしてもよい。 Although the plate holder 2 is driven via the elastic body 4 in FIG. 1, a hydraulic mechanism for driving the plate holder 2 separately from the upper die A may be provided.
本発明によれば、穴の打抜き工程中に金属板に
ゆがみを発生するような材料の塑性流動を少なく
した金属板の打抜き装置を得ることができる。
According to the present invention, it is possible to obtain a metal plate punching apparatus that reduces the plastic flow of the material that causes distortion in the metal plate during the hole punching process.
第１図は本発明の一実施例になる金属板の打抜
き装置を示す概略断面図、第２図は二枚重ね金属
板の一例を示す断面図、第３図は第１図の装置に
よつて被加工物を穴抜き加工する途中を示す断面
図、第４図は金属板の固定状態を示す第３図Ｓ部
の相当図、第５図は第３図Ｓ部の拡大図である。
１……雌型、２……板押え、５……雌型、７…
…環状突起。
FIG. 1 is a schematic cross-sectional view showing a metal plate punching apparatus according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing an example of a two-ply metal plate, and FIG. FIG. 4 is a cross-sectional view showing the process of punching a hole in a workpiece, FIG. 4 is a view corresponding to section S in FIG. 3 showing a fixed state of the metal plate, and FIG. 5 is an enlarged view of section S in FIG. 3. 1...Female type, 2...Plate holder, 5...Female type, 7...
...annular process.
Claims (1)
型との間に金属板を挾んで押える板押えとを有す
る金属板の打抜き装置において、前記雌型の穴の
周りで前記板押えと対向する位置に、外周が垂直
で内周に傾斜を有する断面直角三角形の環状突起
を設けたことを特徴とする金属板の打抜き装置。1. In a metal plate punching device having a male die, a female die facing the male die, and a plate holder that clamps and presses a metal plate between the female die, the plate is cut around a hole in the female die. A metal plate punching device characterized in that an annular protrusion having a right triangular cross section and a vertical outer periphery and an inclined inner periphery is provided at a position facing the presser foot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8019585A JPS61238424A (en) | 1985-04-17 | 1985-04-17 | Metal plate punching equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8019585A JPS61238424A (en) | 1985-04-17 | 1985-04-17 | Metal plate punching equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61238424A JPS61238424A (en) | 1986-10-23 |
| JPH0562006B2 true JPH0562006B2 (en) | 1993-09-07 |
Family
ID=13711600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8019585A Granted JPS61238424A (en) | 1985-04-17 | 1985-04-17 | Metal plate punching equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61238424A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0376621U (en) * | 1989-11-21 | 1991-07-31 | ||
| JPH0715198U (en) * | 1993-08-30 | 1995-03-14 | 株式会社キツダ | Progressive die structure |
| JP4006640B2 (en) * | 2003-03-12 | 2007-11-14 | トヨタ自動車株式会社 | Manufacturing method of plastic joint parts |
| JP6567292B2 (en) * | 2014-03-17 | 2019-08-28 | 株式会社東亜鍛工所 | Method for manufacturing metal plate having holes, method for manufacturing external gear with peripheral hole, and method for manufacturing metal plate |
-
1985
- 1985-04-17 JP JP8019585A patent/JPS61238424A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61238424A (en) | 1986-10-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |