JPH0448996B2 - - Google Patents
Info
- Publication number
- JPH0448996B2 JPH0448996B2 JP23174988A JP23174988A JPH0448996B2 JP H0448996 B2 JPH0448996 B2 JP H0448996B2 JP 23174988 A JP23174988 A JP 23174988A JP 23174988 A JP23174988 A JP 23174988A JP H0448996 B2 JPH0448996 B2 JP H0448996B2
- Authority
- JP
- Japan
- Prior art keywords
- elbow
- edges
- forming
- length
- steel plate
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 80
- 239000010959 steel Substances 0.000 claims description 80
- 239000000463 material Substances 0.000 claims description 78
- 238000005452 bending Methods 0.000 claims description 28
- 238000005304 joining Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 20
- 238000005520 cutting process Methods 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 8
- 238000000748 compression moulding Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001447 compensatory effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
- B21C37/286—Making tube fittings for connecting pipes, e.g. U-pieces starting from sheet material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、鋼板を素材としてエルボを製作する
に際し、通常のものより幅が狭い定尺幅の鋼板か
ら、複数のエルボ製作用鋼板素材の板取りが許容
化され、かつ、当該板取りに伴う残材発生を最少
化して極めて合理的なる板取りが達成されるよう
に成し、依つて、使用材料の節減化並びに製造コ
ストの著減化目的が果たされるようにしたことを
特徴とするエルボ製作用鋼板素材の板取り方法及
びこの鋼板素材に依つて製作されたエルボに関す
るものである。Detailed Description of the Invention (Industrial Application Field) The present invention is a method for manufacturing elbows using steel plates as raw materials. It is possible to achieve extremely rational board cutting by making board cutting permissible and minimizing the generation of residual material due to the board cutting, thereby saving the materials used and significantly reducing the manufacturing cost. The present invention relates to a method for cutting a steel sheet material for making an elbow, and an elbow manufactured using this steel sheet material.
（従来の技術）
エルボ製作の手段としては、鋼管を素材として
製作する方法と、鋼板を素材として製作する方法
とがある。(Prior Art) There are two methods for manufacturing an elbow: one using a steel pipe as a raw material, and the other using a steel plate as a raw material.
鋼管を素材とする場合は、熱間成形または冷間
成形、若しくは高周波成形等の手段に基づきエル
ボを製作するものである。 When a steel pipe is used as a material, the elbow is manufactured by hot forming, cold forming, high frequency forming, or the like.
そして、鋼板を素材とする場合は、定尺幅の鋼
板から、エルボ製作用鋼板素材の板取りし、然る
後、所定のプレス成形型を用いて圧搾成形してエ
ルボを完成化するものである。 If a steel plate is used as the material, the steel plate material for making the elbow is cut out from a steel plate of a fixed width, and then the elbow is completed by compression molding using a specified press mold. be.
（発明が解決しようとする問題点）
前述したような鋼管を素材としてエルボを製作
する場合は、使用材料の無駄性は生じない。(Problems to be Solved by the Invention) When an elbow is manufactured from a steel pipe as described above, there is no waste of materials used.
然し乍、鋼板を素材としてエルボを製作する場
合、第７図に示すように、定尺鋼板Ａに対し、所
要のエルボの展開形状と等しい、形状を室するエ
ルボ製作用鋼板素材Ｂを連結的に打ち抜いて板取
りし、当該板取りしたエルボ製作用鋼板素材Ｂ
は、同図に於いてその上縁部及び下縁部及を合致
させるような湾曲的圧搾成形処理を、所定のプレ
ス成形型を用いて施し、然る後、第７ａ図に示す
ように当該合致縁部を溶接Ｃすることに依り、エ
ルボを完成化するものである。 However, when manufacturing an elbow using a steel plate as a material, as shown in FIG. Steel plate material B for making elbows, which is punched and plated, and the plated steel plate material B is used for making elbows.
As shown in Figure 7a, a curved compression molding process is applied to match the upper and lower edges using a predetermined press mold, and then, as shown in Figure 7a, The elbow is completed by welding the mating edges.
従つて、上記した板取りに伴い、第７図に示す
ように、板取りした各エルボ製作用鋼板素材Ｂ間
には三角形状の残材Ｄが生じることを余儀なくさ
れ、その歩留まりが極めて悪いものとされた。 Therefore, as shown in Fig. 7, due to the above-mentioned planking, a triangular residual material D is inevitably generated between each of the steel plate materials B for making elbows that have been removed, and the yield rate thereof is extremely poor. It was said that
また、従来にあつては、使用する定尺鋼板Ａの
横幅は、少なくともエルボ製作用鋼板素材Ｂの横
幅の寸法、すなわち所要エルボ全体の展開形状と
等しい横幅を具えたものを用いることが要求され
た結果、例えばこれより少しでも狭い幅の鋼板は
利用不能とされた。 Furthermore, in the past, it has been required that the width of the fixed-length steel plate A to be used is at least equal to the width of the steel plate material B for making the elbow, that is, the width equal to the unfolded shape of the entire required elbow. As a result, it became impossible to use steel plates with a width even slightly narrower than this.
一方、近年に於いては、エルボ製作用材料とし
て、高価なステンレス鋼板が多様されているた
め、このような使用材料の歩留まりの悪さは、製
品価格の高騰化に直結する事を余儀なくされた。 On the other hand, in recent years, various expensive stainless steel plates have been used as materials for making elbows, and the poor yield of such materials has inevitably led to a rise in product prices.
本発明は、上述したような鋼板を素材としてエ
ルボを製作する場合に生じた従来の問題点の解決
化を図ることを目的とするものである。 The present invention aims to solve the conventional problems that have arisen when manufacturing elbows using steel plates as described above.
（問題点を解決するための手段）
上記した目的を達成するために、本発明に係る
エルボ製作用鋼板素材の板取り方法は、上縁部分
及び下縁部分を緩いカーブ状の曲線になる外向き
弧状縁状を呈する接合用縁辺ａ，ａとし、かつそ
の左右縁部分を外向き弧状縁状を呈する所要エル
ボの開口面外側半部成形用縁辺ｂ，ｂとし、ま
た、その横方向の寸法m1を所要エルボの曲げ外
側の弧状長さに該当する長さとし、更に、その縦
方向の寸法m2を所要エルボの1/2円周長さ（半円
周長さ）に該当する長さとした全体形状が略横長
矩形状を呈する所要エルボの曲げ外側部材成形用
分割鋼板素材２と、上縁部分及び下縁部分を緩い
カーブ状の曲線になる外向き弧状縁状を呈する接
合用縁辺ｃ，ｃとし、かつその左右縁部分を略内
向き円弧状縁状を呈する所要エルボの開口面内側
半部成形用縁辺ｄ，ｄとし、また、その横方向の
寸法n1を所要エルボの曲げ内側の弧状長さに該当
する長さとし、更に、その縦方向の寸法n2を所要
エルボの1/2円周長さ（半円周長さ）に該当する
長さとしたその全体形状が略鼓状を呈する所要エ
ルボの曲げ内側部材成形用分割鋼板素材３とを、
その互いの開口面外側半部成形用縁辺ｂと開口面
内側半部成形用縁辺ｄとを隣接させた状態で、定
尺幅の鋼板１に対し交互に配設するように成した
ことを特徴とするものである。(Means for Solving the Problems) In order to achieve the above-mentioned object, the method for cutting a steel plate material for elbow manufacturing according to the present invention is such that the upper edge portion and the lower edge portion are formed into a gentle curve. The joining edges a and a have an arcuate edge shape, and the left and right edges thereof are the edges b and b for forming the outer half of the opening surface of the required elbow and have an outward arcuate edge shape, and their lateral dimensions Let m 1 be the length corresponding to the arcuate length of the outside bend of the required elbow, and further, let its vertical dimension m 2 be the length corresponding to 1/2 circumference length (semicircle length) of the required elbow. A split steel plate material 2 for forming the bending outer member of the required elbow whose overall shape is approximately a horizontally long rectangle, and a joining edge c whose upper edge portion and lower edge portion are outwardly arcuate edges with gentle curves. , c, and the left and right edges thereof are the edges d and d for forming the inner half of the opening surface of the required elbow, which have a substantially inward arc-shaped edge shape, and the lateral dimension n 1 is the bending inner side of the required elbow. The length corresponds to the arcuate length of A split steel plate material 3 for forming the bending inner member of the required elbow exhibiting
It is characterized in that the edges b for forming the outer half of the opening surface and the edges d for forming the inner half of the opening surface are adjacent to each other, and are alternately arranged on the steel plate 1 having a fixed width. That is.
そして、本発明に係るエルボは、前記した所要
エルボの曲げ外側部材成形用分割鋼板素材２と所
要エルボの曲げ内側部材成形用分割鋼板素材３と
を夫々プレス成形して得られた曲げ外側部材２ａ
と曲げ内側部材３ａとを、その互いの接合用縁辺
ａ，ａ及びｃ，ｃを合致溶着して構成したことを
特徴とするものである。 The elbow according to the present invention is a bent outer member 2a obtained by press-forming the split steel plate material 2 for forming the bending outer member of the required elbow and the split steel plate material 3 for forming the bending inner member of the required elbow, respectively.
and the bent inner member 3a are constructed by welding their joining edges a, a and c, c in a matching manner.
（作用）
上記した本発明に係る方法に基づき板取りされ
た所要エルボの曲げ外側部材成形用分割鋼板素材
２と、所要エルボの曲げ内側部材成形用分割鋼板
素材３に対し、公知のプレス成形処理を施すこと
に依つて、曲げ外側部材２ａと曲げ内側部材３ａ
とを成形する。(Function) The split steel plate material 2 for forming the bending outer member of the required elbow and the split steel plate material 3 for forming the bending inner member of the desired elbow, which have been plated based on the method according to the present invention described above, are subjected to a known press forming process. By applying the following, the bent outer member 2a and the bent inner member 3a
and molding.
然る後、当該曲げ外側部材２ａと曲げ内側部材
３ａとを、その互いの接合用縁辺ａ，ａ及びｃ，
ｃを合致溶着することに依つて、エルボを製作す
る。 After that, the bent outer member 2a and the bent inner member 3a are joined together at their mutual joining edges a, a and c,
The elbow is manufactured by matching welding c.
製作されたエルボは、第２図に示すようにその
接合用縁辺ａ，ａ及びｃ，ｃに対する溶着部Ｐ及
びＱが、その両側部表面に形成されることとな
る。然し乍、当該溶着部Ｐ，Ｑの存在は、エルボ
としての実使用上、何ら問題を生じ得ないもので
ある。 As shown in FIG. 2, the manufactured elbow has welded parts P and Q for the joining edges a, a, c, and c on both sides of the elbow. However, the existence of the welded parts P and Q does not cause any problem in actual use as an elbow.
（実施例）
本考案の実施例を図面について詳細に説明すれ
ば次の通りである。(Example) An example of the present invention will be described in detail with reference to the drawings as follows.
第１図は本発明に係る方法に基づくエルボ製作
用鋼板素材の板取り形態を具体的に示したもので
ある。 FIG. 1 specifically shows the form of cutting a steel sheet material for elbow production based on the method according to the present invention.
第１図に於いて、１は所定の幅を具えた定尺幅
の鋼板であつて、複数のエルボ製作用鋼板素材を
連続状に板取りするためのものである。 In FIG. 1, reference numeral 1 is a steel plate having a predetermined width and a standard width, and is used to continuously cut out a plurality of steel plate materials for making elbows.
そして、本発明に係る方法に依る鋼板１に対す
る板取り形態であるが、これは下記のような配設
形態で成すものである。 The method of cutting the steel plate 1 according to the present invention is as follows.
２は所要エルボの曲げ外側部材成形用分割鋼板
素材、３は所要エルボの曲げ内側部材成形用分割
鋼板素材である。 2 is a divided steel plate material for forming the bent outer member of the required elbow, and 3 is a divided steel plate material for forming the bent inner member of the required elbow.
前記した曲げ外側部材成形用分割鋼板素材２で
あるが、これは第１図に示すように、その上縁部
分及び下縁部分を緩いカーブ状の曲線になる外向
き弧状縁状を呈する接合用縁辺ａ，ａとし、かつ
その左右縁部分を外向き弧状縁状を呈する所要エ
ルボの開口面外側半部成形用縁辺ｂ，ｂとし、そ
の全体が略横長矩形状を呈する形状を具えたもの
である。 The above-mentioned split steel plate material 2 for forming bent outer members is used for bonding, as shown in FIG. Edges a, a, and the left and right edges thereof are edges b, b for forming the outer half of the opening surface of the required elbow, which exhibit an outward arcuate edge shape, and the entire shape is approximately a horizontally long rectangle. be.
また、前記した曲げ内側部材成形用分割鋼板素
材３であるが、これは第１図に示すように、その
上縁部分及び下縁部分を緩いカーブ状の曲線にな
る外向き弧状縁状を呈する接合用縁辺ｃ，ｃと
し、かつその左右縁部分を略内向き円弧状縁状を
呈する所要エルボの開口面内側半部成形用縁辺
ｄ，ｄとし、その全体が略鼓状を呈する形状を具
えたものである。 In addition, the above-mentioned split steel plate material 3 for forming bent inner parts has an outward arcuate shape with its upper and lower edges forming gentle curves, as shown in FIG. The joining edges c, c, and the left and right edges thereof are edges d, d for forming the inner half of the opening surface of the required elbow, which have an approximately inward arc-shaped edge shape, and the entire shape is approximately drum-shaped. It is something that
そして、上記した曲げ外側部材成形用分割鋼板
素材２と曲げ内側部材成形用分割鋼板素材３と
は、その互いの開口面外側半部成形用縁辺ｂと開
口面内側半部成形用縁辺ｄとを隣接させた状態
で、前記した定尺幅の鋼板１に対し交互に配設し
てある。 The split steel plate material 2 for forming the bent outer member and the split steel plate material 3 for forming the bent inner member described above each have an edge b for forming the outer half of the opening surface and an edge d for forming the inner half of the opening surface. They are arranged adjacent to each other and alternately with respect to the steel plates 1 having the above-mentioned standard width.
更に、前記曲げ外側部材成形用分割鋼板素材２
の接合用縁辺ａ，ａと、曲げ内側部材成形用分割
鋼板素材３の接合用縁辺ｃ，ｃは、前記した定尺
幅の鋼板１の両側端辺に夫々臨まされている。 Furthermore, the split steel plate material 2 for forming the bent outer member
The joining edges a, a and the joining edges c, c of the split steel plate material 3 for forming the bent inner member face the opposite end sides of the steel plate 1 having the above-mentioned standard width, respectively.
換言すると、前記曲げ外側部材成形用分割鋼板
素材２と曲げ内側部材成形用分割鋼板素材３との
最大幅（第１図について縦方向の幅）、並びに、
定尺幅の鋼板１の幅とは夫々等しく成るように設
定してある。 In other words, the maximum width (width in the longitudinal direction in FIG. 1) of the divided steel plate material 2 for forming the bent outer member and the divided steel plate material 3 for forming the bent inner member, and
The width is set to be equal to the width of the steel plate 1 having a regular width.
尚、前記曲げ外側部材成形用分割鋼板素材２の
接合用縁辺ａ，ａと、曲げ内側部材成形用分割鋼
板素材３の接合用縁辺ｃ，ｃは、当該両分割鋼板
素材２，３を所定のプレス成形型を用いて湾曲的
圧搾成形処理を施した後に、溶接に基づき接合す
る。処で、図面に於いて当該接合用縁辺ａ，ａと
接合用縁辺ｃ，ｃの長さを違えてあるのは（接合
用縁辺ａ，ａの方を若干長くしてある）、プレス
成形した際に接合用縁辺ａ，ａは若干短縮し、接
合用縁辺ｃ，ｃは逆に伸長するため、当該プレス
成形後において両接合用縁辺ａ，ａ及びｃ，ｃの
長さ一致を図るよう考慮したからである。 The joining edges a, a of the divided steel sheet material 2 for forming the bent outer member and the joining edges c, c of the divided steel sheet material 3 for forming the bent inner member are the same as those of the divided steel sheet materials 2, 3 for forming the bent inner member. After performing a curved compression molding process using a press mold, they are joined by welding. In the drawing, the lengths of the joining edges a, a and the joining edges c, c are different (the joining edges a, a are slightly longer). At this time, the joining edges a, a will be slightly shortened and the joining edges c, c will be elongated, so consideration should be given to matching the lengths of both joining edges a, a and c, c after the press forming. Because I did.
そして、第１図に於いて、寸法m1は所要のエ
ルボの曲げ外側の弧状長さ、寸法n1は所要エルボ
の曲げ内側の弧状長さ、また、寸法m2及びn2は
所要エルボの1/2円周長さ（半円周長さ）に該当
する長さを示す。 In Fig. 1, dimension m 1 is the arcuate length on the outside of the bend of the required elbow, dimension n 1 is the arcuate length on the inside of the bend of the required elbow, and dimensions m 2 and n 2 are the length of the bend on the inside of the required elbow. Indicates the length corresponding to 1/2 circumference length (semicircle length).
第２図は前述したようにして板取りされた曲げ
外側部材成形用分割鋼板素材２と曲げ内側部材成
形用分割鋼板素材３に対して、所定のプレス成形
処理を施すことに依つて成形された曲げ外側部材
２ａと曲げ内側部材３ａとを、互いの接合用縁辺
ａ，ａ及びｃ，ｃを合致溶接して所要のエルボＥ
を製作する製造過程を示したものである。同図に
於いて、Ｐ及びＱは溶着部を示す。 Fig. 2 shows the split steel plate material 2 for forming the bent outer part and the split steel plate material 3 for forming the bent inner part, which have been cut out as described above, to be formed by performing a predetermined press forming process. The bending outer member 2a and the bending inner member 3a are welded together at the joining edges a, a and c, c to form the required elbow E.
This figure shows the manufacturing process for manufacturing. In the figure, P and Q indicate welded parts.
第３図及び第３ａ図は前述した曲げ外側部材成
形用分割鋼板素材２に対して、所要エルボの曲げ
外側形状を型取つた型面を具えた雄型Ｒ及び同雌
型Ｓを用いてプレス成形処理を施す直前状態を示
す。そして、第４図及び第４ａ図は当該雄型Ｒ及
び雌型Ｓを型締めして曲げ外側部材２ａを成形し
た状態を示すものである。 Figures 3 and 3a show the above-mentioned split steel plate material 2 for forming bent outer parts being pressed using a male die R and a female die S, each having a mold surface that has the shape of the bent outer side of the required elbow. Shows the state immediately before being subjected to molding treatment. 4 and 4a show a state in which the male die R and the female die S are clamped to form a bent outer member 2a.
また、第５図及び第５ａ図は前述した曲げ内側
部材成形用分割鋼板素材３に対して、所要エルボ
の曲げ内側形状を型取つた型面を具えた雄型Ｔ及
び同雌型Ｕを用いてプレス成形処理を施す直前状
態を示す。そして、第６図及び第６ａ図は当該雄
型Ｔ及び雌型Ｕを型締めして曲げ内側部材３ａを
成形した状態を示すものである。 In addition, FIGS. 5 and 5a show that a male die T and a female die U, each having a mold surface that has the shape of the bending inner side of a required elbow, are used for the aforementioned split steel plate material 3 for forming bent inner parts. This shows the state immediately before the press molding process is performed. 6 and 6a show a state in which the male die T and the female die U are clamped to form a bent inner member 3a.
また、本発明に係るエルボは、第２図に示すよ
うに、前記した所要エルボ曲げ外側部材成形用分
割鋼板素材２と所要エルボの曲げ内側部材成形用
分割鋼板素材３とを夫々プレス成形して得られた
曲げ外側部材２ａと曲げ内側部材３ａとを、その
互いの接合用縁辺ａ，ａ及びｃ，ｃを合致溶着
Ｐ，Ｑして構成して成るエルボＥに関わるもので
ある。 Moreover, as shown in FIG. 2, the elbow according to the present invention is obtained by press-forming the above-mentioned split steel plate material 2 for forming the required elbow bending outer member and the split steel plate material 3 for forming the required bending inner member of the elbow. The present invention relates to an elbow E formed by welding the resulting bent outer member 2a and bent inner member 3a by matching their joint edges a, a, c, and c to each other and welding them P and Q.
（発明の効果）
本発明に係るエルボ製作用鋼板素材の板取り方
法は、全体形状が略横長矩形状を呈する所要エル
ボの曲げ外側部材成形用分割分割鋼板素材２と、
全体形状が略鼓状を呈する所要エルボの曲げ内側
部材成形用分割鋼板素材３とを、その互いに開口
面外側半部成形用縁辺ｂと開口面内側半部成形用
縁辺ｄとを隣接させた状態で、定尺幅の鋼板１に
対し交互に配設して板取りするように成したか
ら、当該板取りに基づく残材の発生が著しく減少
化することとなる。従つて、使用材料の節減化に
基づき、製品コストの著しい低廉性が図られるこ
ととなる。(Effects of the Invention) The method for cutting a steel plate material for making an elbow according to the present invention includes a divided steel plate material 2 for forming a bending outer member of a required elbow, the overall shape of which is approximately a horizontally long rectangle;
A divided steel plate material 3 for forming the bending inner member of the required elbow, which has a generally drum-like overall shape, is placed in such a state that the edge b for forming the outer half of the opening surface and the edge d for forming the inner half of the opening surface are adjacent to each other. Since the steel plates 1 of a fixed width are alternately arranged and cut out, the generation of residual material due to the cutout is significantly reduced. Therefore, by reducing the amount of materials used, the product cost can be significantly reduced.
すなわち、第７図に示す従来の板取り方法であ
ると、定尺鋼板Ａに対し、所要エルボの展開形状
と等しい形状を呈するエルボ製作用鋼板素材Ｂを
連続状に打ち抜いて成形するため、同図に示すよ
うに、打ち抜いた各素材間に三角形状の残材Ｄが
生じることを余儀なくされ、その歩留まりが極め
て悪いものとされたが、本発明に係る方法に依れ
ば、このような三角形状の残材Ｄは全く生じない
ため、使用材料の節減化目的が達成されるわけで
ある。 That is, in the conventional sheet cutting method shown in FIG. 7, the steel plate material B for making an elbow, which has the same shape as the unfolded shape of the required elbow, is continuously punched out and formed from the regular length steel plate A. As shown in the figure, a triangular residual material D was inevitably formed between each punched material, resulting in an extremely poor yield rate.However, according to the method of the present invention, such triangular residual material Since no shaped residual material D is generated, the purpose of reducing the amount of materials used is achieved.
更に、本発明に係るエルボ製作用鋼板素材の板
取り方法は、エルボ製作用鋼板素材として、所要
エルボの曲げ外側部材成形用分割鋼板素材２と、
所要エルボの曲げ内側部材成形用分割鋼板素材３
との二種類の素材に分割して打ち抜くように成し
たから、従来のように、所要エルボ全体の展開形
状の素材を打ち抜くように成した場合に比して、
１／２幅の狭幅鋼板を用いての板取りが許容化され
ることとなる。従つて、従来にあつては全く使用
不能としたような狭幅鋼板であつても、本発明に
係る方法にあつてはこれの利用が可能化され、従
つて、極めて経済的なる材料使用が許容化される
こととなる。 Furthermore, the method for cutting a steel plate material for elbow production according to the present invention includes, as a steel plate material for elbow production, a divided steel plate material 2 for forming a bending outer member of a required elbow;
Divided steel plate material 3 for forming the bending inner part of the required elbow
Since it is made by punching out two types of materials, compared to the conventional case where the material was punched out in the unfolded shape of the entire required elbow,
Cutting using a narrow steel plate of 1/2 width will be permitted. Therefore, even narrow steel plates that could not be used in the past can be used in the method of the present invention, making it possible to use materials extremely economically. It will be allowed.
そして、本発明に係るエルボは、前記した所要
エルボの曲げ外側部材成形用分割鋼板素材２と所
要エルボの曲げ内側部材成形用分割鋼板素材３と
を夫々プレス成形して得られた曲げ外側部材２ａ
と曲げ内側部材３ａとを、その互いの接合用縁辺
ａ，ａ及びｃ，ｃを合致溶着して構成するように
成したから、前記した本発明に係る板取り方法の
採用が許容化され、上記のような使用材料の節減
化目的が達成されることとなる。そして、上記互
いの接合用縁辺ａ，ａ及びｃ，ｃに対する溶着部
分の存在は、エルボの実使用上において何等の障
害とならないため、当該溶着部分の存在が、上記
した使用材料の節減化効果を挙げるための代償的
マイナス要因となることがない。 The elbow according to the present invention is a bent outer member 2a obtained by press-forming the split steel plate material 2 for forming the bending outer member of the required elbow and the split steel plate material 3 for forming the bending inner member of the required elbow, respectively.
Since the bent inner member 3a and the bent inner member 3a are constructed by welding their mutual joining edges a, a and c, c, the adoption of the above-mentioned board cutting method according to the present invention is permitted, The purpose of reducing the amount of materials used as described above will be achieved. The presence of the welded portions for the joining edges a, a, c, and c does not pose any hindrance in the actual use of the elbow, so the presence of the welded portions has the effect of reducing the amount of materials used. It does not become a compensatory negative factor for raising
図は本発明の一実施例を示すものであつて、第
１図は本発明に係る方法に基づく板取り形態を示
す平面図、第２図は本発明に基づき板取りされた
曲げ外側部材成形用分割鋼板素材２と曲げ内側部
材成形用分割鋼板素材３とに依るエルボ製作過程
を示す説明用斜視図、第３図は曲げ外側部材成形
用分割鋼板素材２に対するプレス成形型に依る型
締め直前状態を示す縦断面図、第３ａ図は第３図
に於けるＷ−Ｗ線部分の断面図、第４図は上記プ
レス成形型の型締め状態を示す縦断面図、第４ａ
図は第４図に於けるＸ−Ｘ線部分の断面図、第５
図は曲げ内側部材成形用分割鋼板素材３に対する
プレス成形型に依る型締め直前状態を示す縦断面
図、第５ａ図は第５図に於けるＹ−Ｙ線部分の断
面図、第６図は上記プレス成形型の型締め状態を
示す縦断面図、第６ａ図は第６図に於けるＺ−Ｚ
線部分の断面図、第７図はエルボ製作用鋼板素材
の板取り方法の従来例を示す平面図、第７ａ図は
同鋼板素材を用いて製作した従来のエルボを示す
斜視図である。
１……定尺幅の鋼板、２……曲げ外側部材成形
用分割鋼板素材、２ａ……曲げ外側部材、ａ，ａ
……接合用縁辺、ｂ，ｂ……開口面外側半部成形
用縁辺、３……曲げ内側部材成形用分割鋼板素
材、３ａ……曲げ内側部材、ｃ，ｃ……接合用縁
辺、ｄ，ｄ……開口面内側半部成形用縁辺、Ｒ…
…曲げ外側部材成形用雄型、Ｓ……曲げ外側部材
成形用雌型、Ｔ……曲げ内側部材成形用雄型、Ｕ
……曲げ内側部材成形用雌型、Ｅ……本発明に係
るエルボ、Ｐ……溶着部、Ｑ……溶着部。
The drawings show an embodiment of the present invention, in which FIG. 1 is a plan view showing a form of board cutting based on the method according to the invention, and FIG. An explanatory perspective view showing the elbow manufacturing process using the divided steel plate material 2 for forming the bent inner part and the divided steel plate material 3 for forming the bent inner part, and FIG. Fig. 3a is a longitudinal sectional view showing the condition, and Fig. 3a is a sectional view taken along line W-W in Fig. 3. Fig. 4 is a longitudinal sectional view showing the clamped state of the press mold, Fig. 4a.
The figure is a cross-sectional view of the X-X line in Figure 4,
The figure is a longitudinal cross-sectional view showing the state immediately before clamping of the split steel plate material 3 for forming bent inner parts by the press mold, Figure 5a is a cross-sectional view taken along the line Y-Y in Figure 5, and Figure 6 is A vertical cross-sectional view showing the clamped state of the press mold, FIG. 6a, is taken along Z-Z in FIG.
A sectional view of the line portion, FIG. 7 is a plan view showing a conventional method of cutting a steel sheet material for making an elbow, and FIG. 7a is a perspective view showing a conventional elbow manufactured using the same steel sheet material. DESCRIPTION OF SYMBOLS 1... Steel plate with standard width, 2... Divided steel plate material for forming bent outer member, 2a... Bent outer member, a, a
... Edge for joining, b, b... Edge for forming the outer half of the opening surface, 3... Divided steel plate material for forming the bent inner member, 3a... Edge for bending, c, c... Edge for joining, d, d...Edge for forming the inner half of the opening surface, R...
...Male die for forming the outer bending member, S...Female die for forming the outer bending member, T...Male die for forming the inner bending member, U
...Female die for forming the bent inner member, E...Elbow according to the present invention, P...Welded part, Q...Welded part.
Claims (1)
になる外向き弧状縁状を呈する接合用縁辺ａ，ａ
とし、かつその左右縁部分を外向き弧状縁状を呈
する所要エルボの開口面外側半部成形用縁辺ｂ，
ｂとし、また、その横方向の寸法m1を所要エル
ボの曲げ外側の弧状長さに該当する長さとし、更
に、その縦方向の寸法m2を所要エルボの1/2円周
長さ（半円周長さ）に該当する長さとした全体形
状が略横長矩形状を呈する所要エルボの曲げ外側
部材成形用分割鋼板素材２と、上縁部分及び下縁
部分を緩いカーブ状の曲線になる外向き弧状縁状
を呈する接合用縁辺ｃ，ｃとし、かつその左右縁
部分を略内向き円弧状縁状を呈する所要エルボの
開口面内側半部成形用縁辺ｄ，ｄとし、また、そ
の横方向の寸法n1を所要エルボの曲げ内側の弧状
長さに該当する長さとし、更に、その縦方向の寸
法n2を所要エルボの1/2円周長さ（半円周長さ）
に該当する長さとした全体形状が略鼓状を呈する
所要エルボの曲げ内側部材成形用分割鋼板素材３
とを、その互いの開口面外側半部成形用縁辺ｂと
開口面内側半部成形用縁辺ｄとを隣接させた状態
で、定尺幅の鋼板１に対し交互に配設するように
成したことを特徴とするエルボ製作用鋼板素材の
板取り方法。 ２ 上縁部分及び下縁部分を緩いカーブ状の曲線
になる外向き弧状縁状を呈する接合用縁辺ａ，ａ
とし、かつその左右縁部分を外向き弧状縁状を呈
する所要エルボの開口面外側半部成形用縁辺ｂ，
ｂとし、また、その横方向の寸法m1を所要エル
ボの曲げ外側の弧状長さに該当する長さとし、更
に、その縦方向の寸法m2を所要エルボの1/2円周
長さ（半円周長さ）に該当する長さとした略横長
矩形状を呈する所要エルボの曲げ外側部材成形用
分割鋼板素材２からプレス成形して成る曲げ外側
部材２ａと、上縁部分及び下縁部分を緩いカーブ
状の曲線になる外向き弧状縁状を呈する接合用縁
辺ｃ，ｃとし、かつその左右縁部分を略内向き円
弧状縁状を呈する所要エルボの開口面内側半部成
形用縁辺ｄ，ｄとし、また、その横方向の寸法n1
を所要エルボの曲げ内側の弧状長さに該当する長
さとし、更に、その縦方向の寸法n2を所要エルボ
の1/2円周長さ（半円周長さ）に該当する長さと
した略鼓状を呈する全体形状を具えた所要エルボ
の曲げ内側部材成形用分割鋼板素材３からプレス
成形して成る曲げ内側部材３ａとを、当該曲げ外
側部材２ａと曲げ内側部材３ａとの互いの接合用
縁辺ａ，ａ及びｃ，ｃを合致溶着して構成したこ
とを特徴とするエルボ。[Scope of Claims] 1. Joining edges a, a whose upper and lower edge portions have outwardly arched edges with gentle curves;
and an edge b for forming the outer half of the opening surface of the required elbow, whose left and right edges have an outwardly arcuate edge shape;
b, and its lateral dimension m 1 is the length corresponding to the arcuate length of the outside bend of the required elbow, and its vertical dimension m 2 is the 1/2 circumference length (half) of the required elbow. A split steel plate material 2 for forming the bending outer member of the required elbow whose overall shape has a substantially horizontally long rectangular shape and whose length corresponds to the circumference (circumference length), and an outer part whose upper and lower edge portions are gently curved. The joining edges c and c have an arc-shaped edge shape, and the left and right edges thereof are edges d and d for forming the inner half of the opening surface of the required elbow, and the lateral direction The dimension n 1 is the length corresponding to the arcuate length of the inside bend of the required elbow, and the vertical dimension n 2 is the 1/2 circumference length (semicircle length) of the required elbow.
Divided steel plate material 3 for forming the bending inner part of the required elbow whose overall shape is approximately drum-shaped and has a length corresponding to .
and are alternately arranged on the steel plate 1 having a fixed width, with the edges b for forming the outer half of the opening surface and the edges d for forming the inner half of the opening surface adjacent to each other. A method for cutting steel plate material for elbow production, which is characterized by: 2. Joining edges a, a whose upper and lower edge portions have outward arcuate edges with gentle curves.
and an edge b for forming the outer half of the opening surface of the required elbow, whose left and right edges have an outwardly arcuate edge shape;
b, and its lateral dimension m 1 is the length corresponding to the arcuate length of the outside bend of the required elbow, and its vertical dimension m 2 is the 1/2 circumference length (half) of the required elbow. The bent outer member 2a is press-formed from a split steel plate material 2 for forming the bent outer member of the required elbow, which has a substantially horizontally long rectangular shape with a length corresponding to Joining edges c, c have outward arcuate edges that form a curved line, and edges d, d for forming the inner half of the opening surface of the required elbow, whose left and right edges have approximately inward arcuate edges. and its lateral dimension n 1
is the length corresponding to the arcuate length of the inside bend of the required elbow, and its vertical dimension n2 is the length corresponding to 1/2 circumference length (semicircle length) of the required elbow. A bending inner member 3a press-formed from a split steel plate material 3 for forming the bending inner member of the required elbow having a drum-like overall shape is used for joining the bending outer member 2a and the bending inner member 3a to each other. An elbow characterized in that edges a, a and c, c are constructed by matching welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23174988A JPH0280890A (en) | 1988-09-16 | 1988-09-16 | Blanking method for steel plate raw material for manufacturing elbow and elbow manufactured from steel plate raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23174988A JPH0280890A (en) | 1988-09-16 | 1988-09-16 | Blanking method for steel plate raw material for manufacturing elbow and elbow manufactured from steel plate raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0280890A JPH0280890A (en) | 1990-03-20 |
| JPH0448996B2 true JPH0448996B2 (en) | 1992-08-10 |
Family
ID=16928435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23174988A Granted JPH0280890A (en) | 1988-09-16 | 1988-09-16 | Blanking method for steel plate raw material for manufacturing elbow and elbow manufactured from steel plate raw material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0280890A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894444A (en) * | 2014-03-06 | 2014-07-02 | 燕山大学 | Single-welding bend pressing and molding method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4808796B2 (en) * | 2009-03-27 | 2011-11-02 | 東邦ガスリビング株式会社 | Exhaust duct and range hood using the same |
| CN104344201A (en) * | 2013-08-01 | 2015-02-11 | 上海凯科管业有限公司 | Arc plate blank of plate-making elbow and blanking method of plate-making elbow |
| CN110202061A (en) * | 2019-07-18 | 2019-09-06 | 燕山大学 | A kind of outer arc list weld-seam bend cold punching mold and method |
-
1988
- 1988-09-16 JP JP23174988A patent/JPH0280890A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894444A (en) * | 2014-03-06 | 2014-07-02 | 燕山大学 | Single-welding bend pressing and molding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0280890A (en) | 1990-03-20 |
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