JPS6012233A - Production of shape steel having hole at flange by pressing - Google Patents
Production of shape steel having hole at flange by pressingInfo
- Publication number
- JPS6012233A JPS6012233A JP11701283A JP11701283A JPS6012233A JP S6012233 A JPS6012233 A JP S6012233A JP 11701283 A JP11701283 A JP 11701283A JP 11701283 A JP11701283 A JP 11701283A JP S6012233 A JPS6012233 A JP S6012233A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- holes
- flange
- punch
- flange part
- 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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/02—Stabbing or piercing, e.g. for making sieves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はフランジに穴をもつ形鋼の製造法に係るもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a section steel having a hole in its flange.
従来、コンクリートとの密着性の向上全ねらいフランジ
に穴をもつ形鋼が製造されているが、このような形鋼は
パンチによる打抜加工又は大径のドリル加工により成形
されていた。Conventionally, steel sections have been produced that have holes on all flanges to improve adhesion to concrete, but such steel sections have been formed by punching or large-diameter drilling.
しかし乍ら、このような力６工法では穴あけ部は完全に
損失となるため、モーメン）ｋ減少させる欠点があるの
みならず、さらに製品の歩留りが悪くまた加工時間も長
くコスト高となっていた。However, with this force 6 method, there is a complete loss in the drilling section, which not only has the disadvantage of reducing moment), but also results in poor product yields, long machining times, and high costs. .
本発明は、かかる実情に鑑みなされたもので、その要旨
とするところは、形鋼のフランジ部に切刃をもつパンチ
を所定の間隔で打込み、穴あけと絞り加工を同時に行な
いつつ穴を成形するか、または形鋼のフランジ部にドリ
ル又はパンチを切込み又は押込んで穴をあけ、次いで円
錐状又は円筒状パンチにより絞り加工を行ないつつ穴を
成形するか、いずれかを行なうことを特徴とするフラン
ジに穴をもつ形鋼の製造法にあり、かかる構成とするこ
とによって製品の歩留りをほとんど減少させることなく
、また断面二次モーメントも減少させることなくコンク
リートとの密着性の優れたフランジに穴をもつ形鋼を経
済的に製造することを可能にしたものである。The present invention was developed in view of the above circumstances, and its gist is to punch a punch with a cutting edge into the flange portion of a section steel at a predetermined interval, and form a hole while performing drilling and drawing at the same time. Or, a flange characterized by forming a hole by cutting or pushing a drill or punch into the flange portion of a section steel, and then forming the hole by drawing it with a conical or cylindrical punch. This method allows holes to be formed in the flange, which has excellent adhesion to concrete, without reducing the yield of the product or reducing the moment of inertia of the product. This made it possible to economically manufacture steel sections with
次に本発明を図面により詳細に説明する。Next, the present invention will be explained in detail with reference to the drawings.
第１図はフランジ厚さｊｏ ｋもつＨ形鋼１を例に、フ
ランジ部に切刃つきのパンチを用いて穴を成形する方法
を示したものである。図において２は切刃をもつ直径β
なるパンチであり、これをクランクプレス又は油圧プレ
スによりフランジ部に押込むことによって穴をあけ、局
部的な切断と絞り加工を同時におこないつつフランジ部
に穴を成形するものである。この場合、穴の位置、寸法
等を所定のものとするために、■］形鋼１は通常の手段
の如く穴径αをもつダイス６とＨ形鋼を水平に保つだめ
のガイトローラ５としわ押え工具４にょ逆保持される。FIG. 1 shows a method of forming a hole in the flange using a punch with a cutting edge, using an H-beam 1 having a flange thickness of jo k as an example. In the figure, 2 is the diameter β with the cutting edge.
This is a punch that is pushed into the flange part using a crank press or hydraulic press to make a hole, and the hole is formed in the flange part while performing local cutting and drawing at the same time. In this case, in order to make the hole position, dimensions, etc. as specified, ■] the section steel 1 is crimped by a die 6 having a hole diameter α and a guide roller 5 for keeping the H section horizontally. It is held in reverse by the presser tool 4.
なお、パンチ直径βと形鋼のフランジ厚さｔ。In addition, the punch diameter β and the flange thickness t of the section steel.
およびダイス穴αの間にα＝β＋（１０４〜１．３０）
ｔ。and between the die hole α = β + (104 ~ 1.30)
t.
×２の関係が成立するようにすると効果的である。It is effective to make the relationship x2 hold.
また、ここで切刃つきのパンチとは第６図（５）に示し
たような２個以上の切刃９と加工によるパンチ抵抗を減
少するために設けた凹部１０とをもつものであって、こ
れによって穴あけと絞り加工を同時に行なうことができ
るものである。In addition, the punch with a cutting edge here is one having two or more cutting edges 9 as shown in FIG. 6 (5) and a recess 10 provided to reduce punch resistance due to processing, This allows drilling and drawing to be performed at the same time.
次に第２図は本発明の製造手段を示すものであって、同
図（５）に示す如くＨ形鋼１は所定の間隔で図示しない
ドリル又はパンチを用い切り込み又は押込みによって小
穴６があけられ、第３図但）に示した円錐状の先端をも
つパンチ２で絞り加工されつつ穴があけられる。その結
果として第２図の）に示すような円筒部７をもつ穴の成
形ができる。Next, FIG. 2 shows the manufacturing means of the present invention, and as shown in FIG. Then, a hole is punched while being drawn with a punch 2 having a conical tip as shown in Fig. 3). As a result, a hole having a cylindrical portion 7 as shown in FIG. 2 can be formed.
しかしながら、造形された穴は同図に示されているよう
に凸凹面８をもつものとなる。この凸凹は高い負荷が作
用する状態の使用においては疵の発生原因ともなる可能
性があるので、切削又はグラインダーによる平坦仕上加
工することが望寸しい。However, the shaped hole has an uneven surface 8 as shown in the figure. Since these unevenness may cause scratches when used under high load conditions, it is desirable to finish it flat by cutting or using a grinder.
第４図はこのようにして造形された仕上製品を示した斜
視図であり、１１は仕上加工された穴を示す。FIG. 4 is a perspective view showing the finished product shaped in this manner, and 11 indicates the finished hole.
以上詳細に示した通り、切刃をもつパンチを用いて穴あ
けと絞シ加工を併用するか、又はあらかじめドリル又は
パンチで***に６け、しかるのちパンチによる絞り加工
をおこなうかの何れかを行なうことによ−シ、フランジ
部に円筒状の穴あけ加工を経済的にかつ歩留りと断面二
次モーメン）ｋ大きく損することなく行なうことができ
る。−この穴あけ加工はフランジに穴あけ加工された形
鋼がコンクリートの中にうめ込まれる時にコンクリート
との密着が著しく向上することによる安価で剛性の高い
建築柱と、地震などの外力が作用したときの低サイクル
疲労に対して耐久性の高い建築梁の製造を狙うものであ
るため、穴あけの精度はそれほどきびしくはない。した
かって、がなりのフランジ厚さをもつ形鋼に効果的に適
用できる。As shown in detail above, either drilling and drawing are performed together using a punch with a cutting edge, or six small holes are made in advance with a drill or punch, and then drawing is performed using a punch. In particular, cylindrical holes can be punched in the flange portion economically and without significantly impairing yield and moment of inertia of area. -This drilling process significantly improves the adhesion of the shaped steel with the concrete when the flange is drilled into the concrete, resulting in an inexpensive and highly rigid architectural column, and also when external forces such as earthquakes act on it. Since the aim is to manufacture architectural beams that are highly durable against low-cycle fatigue, the accuracy of drilling is not very critical. Therefore, it can be effectively applied to a section steel having a flange thickness of a certain degree.
以下本発明の効果を実施例によシさらに具体的に示す。Hereinafter, the effects of the present invention will be illustrated in more detail with reference to Examples.
第１図に示す本発明方法によシ、鋼種として８Ｍ５ Ｑ
を用い２ Ｄ Ｏａｍ Ｘ ２００ ｍｍ 、ウェブ厚
８朔。According to the method of the present invention shown in Fig. 1, the steel type is 8M5 Q.
2D Oam x 200 mm, web thickness 8 mm.
フランジ厚１２調のＨ形鋼のフランジに３’０＋ｎｍの
内径をもつ穴の加工ｋ １００ ｍｍ間隔に６０個の穴
ｉ３ｍの長さの形鋼について加工した。パンチの直径β
は６０ｍ、ダイス直径αは６０−でクリヤランスは１５
ｍであり、フランジ厚さの１２５倍とした。Machining of holes with an inner diameter of 3'0+nm in the flange of an H-shaped steel with a flange thickness of 12 mm. 60 holes were machined at intervals of 100 mm on a section steel with a length of 3 m. Punch diameter β
is 60m, die diameter α is 60-, and clearance is 15
m, which is 125 times the flange thickness.
造形後の円筒状の穴は外径６０唄、内径６０ｍ。After modeling, the cylindrical hole has an outer diameter of 60 m and an inner diameter of 60 m.
円筒部の高さは１４＋ｎ＋ｎとなった。この円筒状の穴
はグラインダー加ニーされて、第４図の形状に仕上げら
れた。このときの円筒状の穴は外径６０霧。The height of the cylindrical portion was 14+n+n. This cylindrical hole was kneaded with a grinder and finished into the shape shown in FIG. The cylindrical hole at this time has an outer diameter of 60 mm.
内径３０■、高さ８闇となった。The inner diameter is 30mm and the height is 8mm.
かくして得られたフランジに穴をもつＩ（形鋼は従来法
の切削加工又はパンチ加工により穴をあけたＨ形鋼に比
してコンクリ−°トとの密着性もよく、また断面二次モ
ーメントにもほとんど変化がないため、曲げ試験による
コンクリートとのはく離強度は著しく向上した。The thus obtained I-shape steel with a hole in the flange has better adhesion to concrete than H-shape steel with holes made by conventional cutting or punching, and has a lower moment of inertia of area. There was almost no change in the strength, so the peel strength from concrete in the bending test was significantly improved.
すなわち、２００脇×２００謔Ｈ形鋼で６０鵡内径の穴
に１００ｍｍ間隔で６０個あけた長さ６ｍの形鋼を２５
０■Ｘ２５０ｍｍのコンクリートに完全に埋込み曲げ試
験を行なった結果、従来法の場合は中央部のたわみが２
００ｍｍで顕著なコンクリートのはく離を生じたのに対
し、本発明方法によシ製造された形鋼は３００ｍｍのた
わみが発生してもコンクリートのはく離は生ぜず、耐久
荷重も５０％の上昇をみた。In other words, 25 x 200 H-shaped steel sections with a length of 6 m with 60 holes of 60 mm inner diameter drilled at 100 mm intervals.
As a result of completely embedded bending test in 0x250mm concrete, the deflection at the center was 2 when using the conventional method.
Contrary to this, the steel section produced by the method of the present invention did not cause concrete peeling even after a deflection of 300 mm, and the durable load increased by 50%. .
以上の実施例からも明らかな通り、本発明法により製造
されたフランジに穴をもつ形鋼はコンクリートと併用す
る場合に著しい効果がみられ、産業上の効果は極めて顕
著なものがある。As is clear from the above examples, the steel section with holes in the flange manufactured by the method of the present invention has a remarkable effect when used in combination with concrete, and the industrial effect is extremely significant.
第１図、第２図（ト）の）は本発明方法によシフランジ
に穴をもつＨ形鋼を製造する手段を示す模式図、第３図
（５）（１３）は本発明方法において用いるパンチの形
状を示す模式図、第４図は本発明方法により製造された
フランジに穴をもつ形鋼の一態様を示す斜視図である。
１・・・Ｈ形鋼、２・・・パンチ、６・・・ダイス、４
・・・しわ押え、５・・・ガイドローラ、６・・・ドリ
ル又はパンチ穴、７・・・絞り加工による穴の円筒部、
８・・・穴部の凸凹面、９・・・パンチ切刃面、１０・
・・パンチの凹面、１１・・・仕上加工された穴。Figures 1 and 2 (G) are schematic diagrams showing means for manufacturing H-section steel having holes in the flange by the method of the present invention, and Figures 3 (5) and (13) are used in the method of the present invention. FIG. 4 is a schematic view showing the shape of a punch, and a perspective view showing one embodiment of a section steel having holes in the flange manufactured by the method of the present invention. 1... H-shaped steel, 2... Punch, 6... Die, 4
・・・Wrinkle presser, 5... Guide roller, 6... Drill or punch hole, 7... Cylindrical part of the hole by drawing process,
8... Uneven surface of the hole, 9... Punch cutting edge surface, 10.
...Concave surface of punch, 11... Finished hole.
Claims (2)
の間隔で押込み、穴あけと絞り加工を同時に行ないつつ
穴を成形すること全特徴とするフランジに穴をもつ形鋼
の製造法。(1) A method for manufacturing a section steel having a hole in the flange, which is characterized by pushing a punch with a cutting edge into the flange of the section steel at a predetermined interval, and forming the hole while performing drilling and drawing at the same time.
間隔で切込み又は押込んで穴をあけ、次いで円錐状又は
円筒状パンチによシ絞シ加工を行ないつつ穴を成形する
ことを特徴とするフランジに穴をもつ形鋼の製造法。(2) It is characterized by making holes by cutting or pushing a drill or punch into the flange part of the section steel at predetermined intervals, and then forming the holes by drawing with a conical or cylindrical punch. A method of manufacturing steel sections with holes in the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11701283A JPS6012233A (en) | 1983-06-30 | 1983-06-30 | Production of shape steel having hole at flange by pressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11701283A JPS6012233A (en) | 1983-06-30 | 1983-06-30 | Production of shape steel having hole at flange by pressing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6012233A true JPS6012233A (en) | 1985-01-22 |
Family
ID=14701263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11701283A Pending JPS6012233A (en) | 1983-06-30 | 1983-06-30 | Production of shape steel having hole at flange by pressing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6012233A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050032546A (en) * | 2005-03-07 | 2005-04-07 | 한성철강공업 주식회사 | Method for producing a c-section steel of requesting type |
| CN102059524A (en) * | 2010-12-30 | 2011-05-18 | 山东杭萧钢构有限公司 | Fabricating process of full-web welding H-type steel member |
-
1983
- 1983-06-30 JP JP11701283A patent/JPS6012233A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050032546A (en) * | 2005-03-07 | 2005-04-07 | 한성철강공업 주식회사 | Method for producing a c-section steel of requesting type |
| CN102059524A (en) * | 2010-12-30 | 2011-05-18 | 山东杭萧钢构有限公司 | Fabricating process of full-web welding H-type steel member |
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