JPS619928A - Punch for working edge bend - Google Patents
Punch for working edge bendInfo
- Publication number
- JPS619928A JPS619928A JP12950484A JP12950484A JPS619928A JP S619928 A JPS619928 A JP S619928A JP 12950484 A JP12950484 A JP 12950484A JP 12950484 A JP12950484 A JP 12950484A JP S619928 A JPS619928 A JP S619928A
- Authority
- JP
- Japan
- Prior art keywords
- punch
- top end
- shaped
- product
- shape
- 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
- 238000005452 bending Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 7
- 238000003672 processing method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000452 restraining effect Effects 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は加工部材の一部分あるいは全部にわたって短冊
状く形成された部分をエッヂベンド加工法によりプレス
加工するようにしたポンチの改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a punch that can press a part or all of a workpiece formed into a rectangular shape by an edge bending method.
従来、第５〜７図に示すような薄板状細長片の曲げ製品
［相］■０は寸法糖度に制約があって素材からそのまま
の形状をプレスによって打抜き加工するのが一般的であ
った。ところがこういった加工方法では、いうまでもな
く材料の歩留りに大きなロスが生じ材料費が高くなり、
ひいては製品のコストアップをまねいていた。Conventionally, bent products [phase] 0 of thin strips as shown in FIGS. 5 to 7 were generally punched into the shape as they were from the raw material using a press due to restrictions on dimensional sugar content. However, with this processing method, it goes without saying that there is a large loss in material yield and material costs increase.
This in turn led to an increase in the cost of the product.
そこで、プレス製品におけるコストの大きな比率を占め
る材料費を節約する方法として、第８〜４図に示すよう
なエッヂベンド加工法が考案され、特に！２１！！品の
加工精度を要求しないものく限ってのみ採用されるよう
罠なってきた。このエッヂベンド加工法を第８〜４図に
より少し詳しく説明すると、ダイ■に形成された略Ｖ字
状の細溝■の上方に加工部材の短冊状に形成された部分
を二点鎖線で示すようにセットしく図中、セット治具は
省略している。）加工部材の面に沿って板厚を前記細溝
■内で拘束しながらポンチ■を下降させ曲げ加工を行う
ものである。Therefore, as a method of saving material costs, which account for a large proportion of the cost of pressed products, the edge bend processing method shown in Figures 8 to 4 was devised, and especially! 21! ! It has become a trap that it is only used in products that do not require high processing precision. To explain this edge bend processing method in a little more detail with reference to Figures 8 to 4, the rectangular portion of the workpiece formed above the approximately V-shaped narrow groove ■ formed in the die ■ is shown by the two-dot chain line. The setting jig is omitted in the figure. ) The bending process is performed by lowering the punch (2) along the surface of the workpiece while restraining the plate thickness within the narrow groove (2).
しかし、この従来のエッヂベンド加工方法では、第８図
に示す如くダイの両支点■■とポンチの先端部だけで加
工部材をとらえるだけであるから。However, in this conventional edge bending method, as shown in FIG. 8, the workpiece is only gripped by the two fulcrums of the die and the tip of the punch.
ポンチによって加工部材が前記細溝内に押し込まれる時
Ｋ、ダイ■との間に生じるＪｌ！擦抵抗抵抗ンバランス
が生じ、この為ｔｉｃｌＩｌ１品■としての曲げ寸法１
＋ 、ｌｘ Ｋ大きなバラツキができ、製品に要求され
る品質の確保ができないので、例えば自動車部品のよう
な高い寸法精度を要求される製品には全く採用されてい
ないものである。When the workpiece is pushed into the narrow groove by the punch, Jl! is generated between K and the die ■! A friction resistance imbalance occurs, and for this reason, bending dimension 1 for ticlIl1 product■
+, lx K large variations occur and the quality required for the product cannot be ensured, so it is not used at all in products that require high dimensional accuracy, such as automobile parts, for example.
本発明は上述の問題点を解決することを目的として提案
されたもので、以下図面に基づき説明する。The present invention was proposed to solve the above-mentioned problems, and will be described below with reference to the drawings.
本発明は第１〜２図に示すように、先端部を略Ｖ字状に
形成した薄板状のポンチ■の先端に円錐状またはＶノッ
ヂ形状の突起（５）を設け、該突起を加工部材の上端面
に喰い込ませてから曲げ加工を行うようにしたものであ
る。As shown in FIGS. 1 and 2, the present invention provides a thin plate-like punch (1) with a substantially V-shaped tip, and a conical or V-notch-shaped protrusion (5) at the tip of the punch (5). The bending process is performed after biting into the upper end surface of the blade.
すなわち、本発明においてはポンチを下降させたときに
、最初にポンチ先端部に設けた突起■が加工部材の上端
面に少し喰い込んだ状態でポンチが下降するから加工部
材が左右に移動することがなく、所定位置での曲げ加工
ができ、寸法精度の高い製品を製造することができる。That is, in the present invention, when the punch is lowered, the protrusion (1) provided at the tip of the punch first bites into the upper end surface of the workpiece, and then the punch is lowered, so that the workpiece moves from side to side. There is no bending process at a predetermined position, and products with high dimensional accuracy can be manufactured.
なお、加工部材の断面形状は縦長の矩形をなすものであ
るから加工部材の剛性はきわめて高く、従って加工部材
の下方を別の下型で支えなくても加工部材罠十分な喰い
込み部分を形成することができる。また加工部材に生じ
る喰い込み部分はきわめて小さなものでよいため製品と
して外観を損うようなことはまったくない。Since the cross-sectional shape of the workpiece is a vertically elongated rectangle, the workpiece has extremely high rigidity, and therefore a sufficient biting area can be formed to trap the workpiece without supporting the lower part of the workpiece with another lower mold. can do. In addition, the biting portion that occurs in the workpiece only needs to be extremely small, so that it does not impair the appearance of the product at all.
上述の如く本発明は、従来のエッヂベンド加工方法によ
ると製品の寸法精度の悪さから加工できる製品に大きな
制約があったが、これをポンチの先端に小さな突起を設
けるだけで非常圧広範囲の製品にまで適用することが可
能となり、材料の歩留りを著しく向上させるので製品の
コストダウンを大きく図ることができるものである。As mentioned above, with the conventional edge bend processing method, the products that could be processed were severely limited due to poor dimensional accuracy, but this can be overcome by simply providing a small protrusion on the tip of the punch, which allows products to be processed under a wide range of extreme pressures. This makes it possible to significantly improve the yield of materials, thereby significantly reducing the cost of products.
第１図、第２図は本発明のエッヂベント加工用ポンチの
斜視図、第８図、第４図はエッヂベンド加工方法の原理
図を示すもので、第８図は縦断正面図であり、第４図は
縦断側面図、第６〜７図はエッヂベンド加工を行うのに
適した製品の形状を示す斜視図。1 and 2 are perspective views of the punch for edge bend processing of the present invention, FIGS. 8 and 4 are diagrams showing the principle of the edge bend processing method, FIG. 8 is a longitudinal sectional front view, and FIG. The figure is a vertical side view, and Figures 6 and 7 are perspective views showing the shape of a product suitable for edge bending.
Claims (1)
形成された部分をエッヂベンド加工法によりプレス加工
するようにしたポンチの形状において、先端部を略Ｖ字
状に形成した薄板状のポンチ（４）の先端に円錐状また
はＶノッヂ形状の突起（５）を設け、該突起を加工部材
の上端面に喰い込ませて曲げ加工を行うようにしたこと
を特徴とするエッヂベンド加工用ポンチ。1) In the shape of a punch that is used to press a part or all of a workpiece into a rectangular shape using an edge bending method, a thin plate-like punch (4) with a substantially V-shaped tip is used. A punch for edge bending, characterized in that a conical or V-notch-shaped protrusion (5) is provided at the tip, and the protrusion bites into the upper end surface of a workpiece to perform bending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12950484A JPS619928A (en) | 1984-06-22 | 1984-06-22 | Punch for working edge bend |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12950484A JPS619928A (en) | 1984-06-22 | 1984-06-22 | Punch for working edge bend |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS619928A true JPS619928A (en) | 1986-01-17 |
Family
ID=15011117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12950484A Pending JPS619928A (en) | 1984-06-22 | 1984-06-22 | Punch for working edge bend |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS619928A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989001833A1 (en) * | 1987-09-04 | 1989-03-09 | Lane & Roderick, Inc. | Forming process for producing sharp corners in sheet metal and apparatus useful therein |
| US4926676A (en) * | 1987-09-04 | 1990-05-22 | Lane & Roderick, Inc. | Forming process for producing sharp corners in sheet metal |
| CN103212609A (en) * | 2013-04-19 | 2013-07-24 | 杨媛媛 | Mould for bending forming of electric bicycle cover plate |
-
1984
- 1984-06-22 JP JP12950484A patent/JPS619928A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989001833A1 (en) * | 1987-09-04 | 1989-03-09 | Lane & Roderick, Inc. | Forming process for producing sharp corners in sheet metal and apparatus useful therein |
| US4926676A (en) * | 1987-09-04 | 1990-05-22 | Lane & Roderick, Inc. | Forming process for producing sharp corners in sheet metal |
| CN103212609A (en) * | 2013-04-19 | 2013-07-24 | 杨媛媛 | Mould for bending forming of electric bicycle cover plate |
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