JPS6082225A - Burrling method - Google Patents
Burrling methodInfo
- Publication number
- JPS6082225A JPS6082225A JP18823583A JP18823583A JPS6082225A JP S6082225 A JPS6082225 A JP S6082225A JP 18823583 A JP18823583 A JP 18823583A JP 18823583 A JP18823583 A JP 18823583A JP S6082225 A JPS6082225 A JP S6082225A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- flange
- punch
- pilot hole
- burring
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Description
【発明の詳細な説明】
（ａ） 発明の技術分デを
本発明は、板金のプレス加工に係り、特に、平板に下穴
を明り、ポンチを突き出して穴フランジを形成させる、
所謂バーリング加工の方法に関す。DETAILED DESCRIPTION OF THE INVENTION (a) Technical Part of the Invention The present invention relates to press working of sheet metal, in particular, drilling a pilot hole in a flat plate and protruding a punch to form a hole flange.
It relates to a method of so-called burring processing.
（ｂｌ 技術の背景
板金加工物は、各種構造物の構成部材として極めて多く
使用されている。そして、該加工物が量産品である場合
、通電、加工が均一で然も加工費が安くなるプレス加工
によって加工されている。(bl Background of the technology Sheet metal workpieces are extremely widely used as constituent members of various structures.In addition, when the workpiece is mass-produced, presses that can uniformly conduct electricity and process at low processing costs) Processed by processing.
この加工物に、タップを立ててねじを止めたり、穴を明
りて他の部材を係止ないし保合さ−Ｕる場合、該加工物
の板厚では所要の寸法に足りないことがある。このよう
な場合にバーリング加工を施して穴フランジを立て、前
記所要の寸法を確保することが灰行われている。If this workpiece is to be tapped to fasten a screw or drilled to lock or hold another member, the thickness of the workpiece may not be sufficient to meet the required dimensions. In such cases, it is common practice to perform burring to erect a hole flange to ensure the required dimensions.
（Ｃ） 従来技術と問題点
第１図は従来のバーリング加ニー実施例の工程を示した
図（ａｌ ・（ｂｌ −（ｃｌで、１は板、２は絞り、
３は下穴、４は穴フランジ、ａ −ｄは寸法をそれぞれ
示す。(C) Prior art and problems Figure 1 is a diagram showing the process of a conventional burring and kneading example (al・(bl−(cl), where 1 is a plate, 2 is a drawing,
3 indicates a prepared hole, 4 indicates a hole flange, and a to d indicate dimensions, respectively.
発明者等は、厚さ２． Ｑ ｍａの冷間圧延鋼板に穴径
１２．７鰭、フランジ高さ８ｆｉ以上でフランジ先端に
割れのない穴フランジを形成することを息図して、第１
図に示すような従来の加工手順による加工を行った。The inventors have determined that the thickness is 2. With the aim of forming a hole flange with a hole diameter of 12.7 fins, a flange height of 8 fi or more, and no cracks at the flange tip on a Qma cold rolled steel plate, the first
Processing was performed using the conventional processing procedure as shown in the figure.
即ち、最初に図（ａｌのように、Ｊ７さ２．０＋ｍの冷
間圧延鋼板なる板ｌに円柱形の校り２を形成した（寸法
ａ＝１２．７ｍａφ、ｂ ＝ ３．５＋ＩＩＮ）’ ｏ
コ０）際板１の平面部分は加」二重の要部となるので
、絞り２周辺からの絞り込みは許されない。次に図（ｂ
）のように下穴３ （寸法Ｃ”” Ｇ、（Ｊａｍφ）を
抜きカ１ぼにょゲζ形成し、続い′Ｃポンチを突き出し
て図ｔｃ＋のよ・）な穴フランシイを形成した。That is, first, as shown in Figure (al), a cylindrical proofing 2 was formed on a J7 2.0+m cold rolled steel plate (dimensions a=12.7maφ, b=3.5+IIN)'o
0) Since the flat part of the edge plate 1 becomes the main part of the double-layered aperture, squeezing from the periphery of the aperture 2 is not allowed. Next, figure (b
), I punched out the pilot hole 3 (dimensions C"" G, (Jamφ) to form a hole ζ, and then pushed out a 'C punch to form a hole franchise as shown in Figure tc+).
かくしこ出来ノこ穴フランジ４は、その寸法が、穴径ａ
＝ １２．７ｍｍ ψ、７７７ シｎ サｄ ＝ 約
’１３ｍｍ テ、意図したフランジ高さを１ｑることが
出来なかった。The dimension of the hidden hole flange 4 is the hole diameter a.
= 12.7mm ψ, 777 Thin Sad = Approximately 13mm Te, I could not make the intended flange height 1q.
そこで、フランジ高さｄに影響を与える寸法ｂ・Ｃに関
し、板１の場合についてｄを大きく出来る限度を検的し
たとごろ、ｂは大きい方が望ましいがこれ以上に人きく
することは困ｆｆｆｆであり、Ｃは小さル）方が望まし
いがこれ以上に小さくすると穴フランジ４の先端に割れ
が発生し゛ζ所望の条（’１を満たさなくなることが判
った。Therefore, regarding the dimensions b and C that affect the flange height d, we investigated the limit to which d can be increased in the case of plate 1. Although it is desirable that b be larger, it is difficult to make it more difficult.ffff It is desirable that C be smaller (1), but it has been found that if it is made smaller than this, cracks will occur at the tip of the hole flange 4 and the desired condition ('1) will not be satisfied.
更に、図（ｃ）の加工時に穴フランジ４の厚さを薄くす
ることにより、フランジ高さくｊを大きくするごとを試
みたが、穴フランジ４の先Ｏ；！１に割れが発生して、
上述の結果が限度であることが判った。Furthermore, we attempted to increase the flange height j by decreasing the thickness of the hole flange 4 during the machining shown in Figure (c), but the tip of the hole flange 4 O;! A crack occurred in 1,
It was found that the above results are the limit.
従って、前記窓口したようなフランジ高さをｉ′Ｊるに
は、従来のバーリング加工方法では無理があり、代わり
にそのフランジとなる部分を別部祠にして板１に接合す
るならばコスＩ・高になる問題がある。Therefore, it is impossible to increase the height of the flange i'J as described above using the conventional burring method, and instead, if the part that will become the flange is made into a separate part and joined to the plate 1, the cost will be reduced.・There is a problem of getting high.
（ｄｌ 発明の目的
本発明の目的は上記従来の問題に鑑の、先ｖ１；）に割
れを発生さ・已ずして穴フランジ高さを人き（出来るバ
ーリング加工方法を提供するにある。(dl OBJECT OF THE INVENTION The object of the present invention is to provide a burring method that can increase the height of a hole flange without causing cracks in view of the above-mentioned conventional problems.
（８）発明の構成
上記目的は、下穴抜きに先立ら、該下穴部分を薄く成形
して、その成形部分の祠オ′、１を該下穴の周囲に移行
させた後、該下穴を抜き、ポンチを突き出させることを
特徴とするバーリング加工方法によって達成される。(8) Structure of the Invention The above-mentioned object is to form the pilot hole part thinly before punching the pilot hole, and after transferring the abrasions of the molded part to the periphery of the pilot hole. This is achieved by a burring method characterized by punching a pilot hole and protruding a punch.
本発明によれば、前記下穴部分を薄く成形する際に、前
記ポンチを突き出さゼる方向に凸であって、底面を咄力
Ｉぽ仕−Ｌがり寸法の大きさにし、上面を略前記材料移
行部分を含む大きさにした略台形の絞りを伴わせ、該自
形上面の内面側で薄くなるよう成形することが望ましい
。According to the present invention, when forming the prepared hole portion thinly, it is convex in the direction in which the punch is projected, the bottom surface is made to have a size equal to the width of the punching force I, and the upper surface is approximately It is desirable to form the shape so that it has a substantially trapezoidal aperture sized to include the material transition portion, and becomes thinner on the inner surface side of the self-shaped upper surface.
この加工方法によれば、次のような理由により穴フラン
ジ高さを大きくすることが可能になる。According to this processing method, the height of the hole flange can be increased for the following reasons.
■ 従来下穴部分としζ捨てられていた＋、ｔ ｉ′、
−１の可なりの部り）が、穴フランジ形成用として活用
される。■ +, t i′, which were conventionally discarded as the pilot hole part.
-1) is utilized for forming the hole flange.
■ 穴フランジ先端側れ発生の起点部分が、従来の方法
では下火抜きの破断面部分に位置したが、本発明の方法
では板材の表面層であった部分に位置するので、該割れ
が発生しゲ１くなる。■ In the conventional method, the starting point of the sideward deviation of the tip of the hole flange was located at the fracture surface of the lower fire extraction, but in the method of the present invention, it is located at the surface layer of the plate material, so the crack occurs. Shige becomes 1.
（ｆｌ 発明の実施例
以下本発明の実施例を図により説明する。企図を通じ同
一符号は同一対象物を示す。(fl Embodiments of the Invention The embodiments of the invention will now be described with reference to the drawings. The same reference numerals indicate the same objects throughout the invention.
第２図は第１図に対応するバーリング加ニー実施例の本
発明にょるユニ稈を示し）こ図ｆａ）・（ｂ）・＋０１
、第３図は第２図（ａｌの詳細を示した図で、２ａは絞
り、３ａは下穴、４ａは穴フランジ、ｃ −” ｕば寸
法をそれぞれ示す。Fig. 2 shows a uniculm according to the present invention in a burring knee embodiment corresponding to Fig. 1).
, FIG. 3 is a diagram showing the details of FIG. 2 (al), where 2a shows the aperture, 3a shows the prepared hole, 4a shows the hole flange, and c-'' u dimensions, respectively.
第２図に示す加工の手順は第１図の場合と同様であるが
、その相違点は主として図（８１の絞り２ａの形状にあ
る。即ち、最初に図＋ｎｌのように、板１に略台形の絞
り２ａを形成した。この絞り高さ寸法Ｃは６．０關で従
来実施例の高さ寸法ｂ （＝ 、３．５１１ｍ）より高
くなったのは、主として絞り形状が台形であり、且つ下
穴３８部分を薄くしてその部分の材料を下穴３ａの周囲
に移行させているためである。また、この薄い部分は、
該台形の内面側になるようにしである。次に図（ｂｌの
ように下穴３ａ （寸法ｆ＝５．０關φ）を抜き加工に
よって形成し、続いてポンチを突き出して図（Ｃ１のよ
うな穴フランジ４ａを形Ｊ戊 し ）こ。The processing procedure shown in Fig. 2 is the same as that shown in Fig. 1, but the difference lies mainly in the shape of the aperture 2a in Fig. A trapezoidal aperture 2a is formed.The aperture height dimension C is 6.0 degrees higher than the height dimension B (=, 3.511 m) of the conventional example, mainly because the aperture shape is trapezoidal. In addition, this is because the pilot hole 38 portion is made thinner and the material in that portion is transferred to the periphery of the pilot hole 3a.
It is arranged so that it is on the inner side of the trapezoid. Next, a pilot hole 3a (dimension f = 5.0 mm φ) is formed by punching as shown in figure (BL), and then a hole flange 4a as shown in figure (C1) is punched out using a punch. .
かくして出来た穴フランジ４ｄは、その寸法が、穴径ａ
＝ １２．７ ｍφ、フランジ高さｇ−約９ＩＩ１１
テ、然もフランジ先端の割れもなく所望のものであった
。The dimension of the hole flange 4d thus formed is the hole diameter a.
= 12.7 mφ, flange height g - approx. 9II11
However, there was no cracking at the tip of the flange, which was desired.
このような極めて大きなフランジ高さｇ−約９鰭を１−
７ることが出来た台形をなす絞り２ａの詳細は第３図に
示す如くである。ここで各寸法は、ｅ−６，０鶴、ｆ
＝ ５．Ｑｍｍφ、ｋ＝９．３關φ、ｊ＝１５．０ｕｓ
φ、ｋ＝３．５ｕｓφ、Ｉ＝４．５ｍｍ、ｍ＝Ｑ、２ａ
ｍ％ｎ ＝ １．３＋ｕ、 ｐ ＝ 、Ｑ、３ｍ、ｑ２
１１ン、ｒ−３ＲＸｓ −ｔ＝２５度、ｕ−１５度、で
ある。Such a very large flange height g - approximately 9 fins to 1 -
The details of the trapezoidal diaphragm 2a that was able to be used are shown in FIG. Here, each dimension is e-6,0 Tsuru, f
= 5. Qmmφ, k=9.3φ, j=15.0us
φ, k=3.5usφ, I=4.5mm, m=Q, 2a
m%n = 1.3+u, p = , Q, 3m, q2
11 degrees, r-3RXs-t=25 degrees, u-15 degrees.
この形状から判るように、ポンチを突き出して穴フラン
ジ４ａを形成する際、その先端に割れが生じなかったの
は、下穴３．】の破Ｗｉ面が穴フランジ４ａの内側室り
に来て、該割れ発生の起点部分が板１の表面層であった
部分に位置したからである。As can be seen from this shape, when the punch was pushed out to form the hole flange 4a, no cracks occurred at the tip of the hole 3. This is because the fracture Wi surface of the hole flange 4a was located at the inner chamber of the hole flange 4a, and the starting point of the crack was located in the surface layer of the plate 1.
（ｇｌ 発明のリノ果
以上に説明したように、本発明による構成によれば、先
端に割れを発生させずして穴フランジ高さを大きく出来
るバーリング加工方法を提供することが出来、従来フラ
ンジ部分を別９Ｂ ＋Ａにしていたものの一部をプレス
加工に置換することが可能になる経済的９）果がある。As explained above, according to the structure of the present invention, it is possible to provide a burring method that can increase the height of the hole flange without causing cracks at the tip, and There is an economical 9) effect in that it becomes possible to replace part of what used to be 9B+A with press processing.
第１図は従来のパーリング加ニー実施例の工程を示した
図（８）・（１１）・（に）、第２図は第１図に対応す
るバーリング加ニー実施例の本発明による工程を示した
図（ａｌ ・（ｂ） −ｔｅｌ、第３図は第２図（ａｌ
の詳ｘｍを示した図である。
図面において、１は板、２・２８は絞り、３・３ａは下
穴、４・４ａは穴フランジ、ａ−ｕは寸法をそれぞれ示
す。Fig. 1 is a diagram showing the steps (8), (11), and (2) of the conventional purling and kneading embodiment, and Fig. 2 is a process according to the present invention of the burring and kneading embodiment corresponding to Fig. 1. (al ・(b) -tel, Figure 3 shows Figure 2 (al
It is a figure showing details xm of. In the drawings, 1 is a plate, 2 and 28 are apertures, 3 and 3a are pilot holes, 4 and 4a are hole flanges, and a-u are dimensions, respectively.
Claims (2)
、その成形部分の材料を該下穴の周囲に移行させた後、
該下穴を抜き、ポンチを突き出させることを特徴とする
バーリング加工方法。(1) Prior to punching the pilot hole, the pilot hole portion is molded thinly, and the material of the molded portion is transferred to the periphery of the pilot hole, and then
A burring processing method characterized by punching out the pilot hole and protruding a punch.
チを突き出さ・μる方向に凸であって、底面を略加工仕
上がり寸法の大きさにし、上面を略前記材料移行ｇＨ分
を含む大きさにした略台形の絞りを伴わせ、該台形上面
の内面側で薄くなるよう成形することを特徴とする特許
請求の範囲、ｆｆｌ （１１項記載のバーリング加工方
法。(2) When forming the prepared hole portion thinly, it should be convex in the direction in which the IZ punch is protruded, the bottom surface should be approximately the size of the finished machining dimension, and the top surface should be approximately the size of the material transfer gH. 12. The burring method according to claim 11, characterized in that the burring process is accompanied by a substantially trapezoidal aperture having a size that includes the trapezoid, and is formed to be thinner on the inner side of the upper surface of the trapezoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18823583A JPS6082225A (en) | 1983-10-07 | 1983-10-07 | Burrling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18823583A JPS6082225A (en) | 1983-10-07 | 1983-10-07 | Burrling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6082225A true JPS6082225A (en) | 1985-05-10 |
Family
ID=16220151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18823583A Pending JPS6082225A (en) | 1983-10-07 | 1983-10-07 | Burrling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6082225A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60234729A (en) * | 1984-05-04 | 1985-11-21 | Matsushita Refrig Co | Manufacture of fin for heat exchanger |
| US5295390A (en) * | 1990-05-25 | 1994-03-22 | Kabushiki Kaisha Toshiba | Method of burring |
| JP2014513264A (en) * | 2011-05-02 | 2014-05-29 | ベール ゲーエムベーハー ウント コー カーゲー | Heat exchangers, especially charge air coolers |
| JP2021094580A (en) * | 2019-12-18 | 2021-06-24 | Ｊｆｅスチール株式会社 | Burring method |
-
1983
- 1983-10-07 JP JP18823583A patent/JPS6082225A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60234729A (en) * | 1984-05-04 | 1985-11-21 | Matsushita Refrig Co | Manufacture of fin for heat exchanger |
| US5295390A (en) * | 1990-05-25 | 1994-03-22 | Kabushiki Kaisha Toshiba | Method of burring |
| JP2014513264A (en) * | 2011-05-02 | 2014-05-29 | ベール ゲーエムベーハー ウント コー カーゲー | Heat exchangers, especially charge air coolers |
| US9599413B2 (en) | 2011-05-02 | 2017-03-21 | Mahle International Gmbh | Heat exchanger, in particular intercooler |
| JP2021094580A (en) * | 2019-12-18 | 2021-06-24 | Ｊｆｅスチール株式会社 | Burring method |
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