JPS60102230A - Manufacture of elbow - Google Patents

Manufacture of elbow

Info

Publication number
JPS60102230A
JPS60102230A JP21058083A JP21058083A JPS60102230A JP S60102230 A JPS60102230 A JP S60102230A JP 21058083 A JP21058083 A JP 21058083A JP 21058083 A JP21058083 A JP 21058083A JP S60102230 A JPS60102230 A JP S60102230A
Authority
JP
Japan
Prior art keywords
spherical body
curved hole
pressed
curved
tubular
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.)
Granted
Application number
JP21058083A
Other languages
Japanese (ja)
Other versions
JPH0318967B2 (en
Inventor
Junji Takayasu
高安 順治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TAKAYASU KOGYO KK
Original Assignee
TAKAYASU KOGYO KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TAKAYASU KOGYO KK filed Critical TAKAYASU KOGYO KK
Priority to JP21058083A priority Critical patent/JPS60102230A/en
Publication of JPS60102230A publication Critical patent/JPS60102230A/en
Publication of JPH0318967B2 publication Critical patent/JPH0318967B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D9/00Bending tubes using mandrels or the like
    • B21D9/12Bending tubes using mandrels or the like by pushing over a curved mandrel; by pushing through a curved die

Abstract

PURPOSE:To obtain an elbow of high quality and high dimensional accuracy having smooth surface without requiring complicated processes by inserting a tubular material into a curved hole provided in a die and supplying and pressing a spherical body in the tubular material. CONSTITUTION:The tubular material 20 is inserted from the end of curved hole 2 of the die 1, and the rear end of the material 20 is pressed in the curved hole 2 by the first plunger punch. Then, the first plunger punch is pulled out, and a spherical body 6 made of steel slightly smaller in diameter than inner diameter of the material tube 20 is supplied from rear end of the tube, and rear end of the material 20 and spherical body 6 are pressed in the curved hole 2. The material 20 is advanced and plastic deformed. Then, a spherical body 8 having the same diameter as the spherical body 6 is supplied in the material 20, and the material 20 and spherical body 8 are pressed in the curved hole 2 by a plunger punch having longer large diameter part. The material 2 is plastic deformed along the shape of curved part 2a. When an additional spherical body is supplied, and the material 20 and spherical body are pressed in by the fourth plunger punch, the material 20 is pressed in the curved hole 2 until it comes into contact with a stopper fitting 3, and plastic deformed to final shape with its inner face held by the spherical body.

Description

【発明の詳細な説明】 (産業上の利用分与・f) 本発明tユ管状累IAからエルボを製造する方法に関す
るものである。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application/f) The present invention relates to a method for manufacturing an elbow from a tubular stack IA.

(従)1〔技術) 従来一般にエルボは所定形状に打抜いた金19S板の画
!’Ii!a面をムー接する方法により製造されている
ため工程か複雑であるうえ表面平滑19及びりI”/)
:、精度が悪い欠点かあり、また溶接を行ないつ4[い
金属製のものti製1聞できン:Lい問題か;i)つた
(Sub) 1 [Technology] Conventionally, elbows are generally made from a gold 19S plate punched into a predetermined shape! 'Ii! Since it is manufactured by the method of contacting the A side with Mu, the process is complicated and the surface is smooth.
:、There is a drawback of poor accuracy, and when welding, it is impossible to make a metal one.

(発明の目的) 本発明はこのような問題点を解消し、表面が平?1tで
寸法精度に優れたエルボを1目、にきlFイ曲溶接、後
加工等の複雑な工程を要することなく製造することがで
き、また、溶接を行ない闘[い金1qj、 JQ+のエ
ルボをも製造することができるエルボの製造方法を目的
として完成されたものである。
(Objective of the invention) The present invention solves these problems and provides a flat surface. It is possible to manufacture elbows with excellent dimensional accuracy in 1 ton without requiring complicated processes such as 1st welding, diagonal welding, and post-processing. It was completed with the aim of creating an elbow manufacturing method that can also be used to manufacture elbows.

(発明の構成) 本発明は金型に設(Jられだエルボ成形用の何曲孔の端
部から管状素材を挿入するとともに管状素4・、1内に
その内径より僅かに小径の球体を供給して押匹すにより
該管状素材を11曲孔の内部に圧入し、+)it記球体
により内面を保持しつつ管状素4:Jを何曲孔に沿って
塑性変形さぜることを11h徴とするものであり、以下
、イ1発明の実施例化図示の1′、程説明図により詐卸
1に説明する。
(Structure of the Invention) The present invention involves inserting a tubular material into a mold from the end of a curved hole for forming an elbow, and inserting a sphere with a diameter slightly smaller than the inner diameter into the tubular element 4, 1. Press the tubular material into the inside of the 11-curved hole by feeding and pressing, and +) plastically deform the tubular element 4:J along the several-curved hole while holding the inner surface with the spherical body. 11h, and will be explained below with reference to 1' and 1' explanatory diagrams of embodiments of the invention.

図中(1)は分割式の金型、(2)は該金ハリ(1)の
分割面に設けられたエルボ成形用のはイ曲孔であり、該
11曲孔(2)は下方の51曲部(2a)と上方の直線
部C21〕)とからなっている。この金型(1)の内面
に鉤渭油を塗布したうえf↓)曲孔(2)の下端に13
4状のストッパー金具(3)をセットし、油圧シリンダ
一端の適当な型締機構により強固に固定する。そして、
この何曲孔(2)の直線部(2b)側の端部から予めj
り「定の寸法形状に切断された管状素材(イ)を第1図
のように把持具(4)により挿入する。管状素材−は鉄
月のみならラチタン合金等の溶接国難な任意の金j−+
j 4:4’ 1’)を用いることができ、その先り:
Af及び後!l’:Afを予め創に切ti′Irして何
曲後の管状素イ1い力の両fQ lnlが中心1141
+と垂直になるようにしておく。次に、第2図に示すよ
うに第1の押型(5)により?’F状素材(ホ)の後端
をt’f曲孔(2)の内部に圧入し、砦・状素利い茅の
先端をヤイ・曲孔(2)の彎曲j、fB (,2a)の
上部に到達さぜる。第1の押型(5)は外径が何曲孔(
2)の内径にに10等しい大径部(、、tn)と外径が
管状素イ′、A(4)の内径にほぼ得しい小径部(51
力とからなるもので、大径部(jlll)の1一端の段
部(5e)により管状繋イ゛4ぐ刺の後端を押Ifする
ものである。
In the figure, (1) is a split-type mold, (2) is a curved hole for elbow forming provided on the split surface of the metal brace (1), and the 11-curve hole (2) is a lower one. It consists of a curved part (2a) and an upper straight part C21). After applying hook oil to the inner surface of this mold (1),
A four-shaped stopper fitting (3) is set and firmly fixed by a suitable mold clamping mechanism at one end of the hydraulic cylinder. and,
From the end of this curved hole (2) on the straight part (2b) side,
Insert the tubular material (A) cut into the specified size and shape using the gripper (4) as shown in Figure 1.The tubular material can be made of any metal that is difficult to weld, such as rattan alloy if it is only made of iron. −+
j 4:4'1') and then:
Af and after! l': After cutting Af into the wound in advance ti'Ir, both fQ lnl of the tubular element 1 force are at the center 1141
Make sure it is perpendicular to +. Next, as shown in FIG. 2, by the first pressing die (5)? 'Press the rear end of the F-shaped material (e) into the inside of the curved hole (2), and insert the tip of the fortress-like grass into the curve j, fB (, 2a) of the curved hole (2). Reach the top of the screen. The first mold (5) has a curved hole (
A large diameter part (,, tn) whose outer diameter is approximately equal to the inner diameter of the tubular element A', A(4), and a small diameter part (51
The step part (5e) at one end of the large diameter part (jlll) pushes the rear end of the tubular connecting barb.

次に、第1の押型(5)を抜き、管状素’、A’ K)
の後端から管状素4゛4翰の内部にその内径より極く僅
か小径のf11製の球体(6)を必要に応じ潤滑油を塗
布したうえ7個供給する。管状素材4薯の・先端はチイ
曲部Qa)の上部により塑性変形ケ開始しているため、
球体(6)は何曲部(,2a)の上部に位置する9゛ζ
状素イ、((ホ)の先端1:;l)内1.′d而と係合
して停止するので、第3図のように11゛5/の411
1型(5)よりも長い大径部(7Il) ”;r・有す
る第2の押型(7)によって9′i”状’JC利(4)
の後端と球体(6)とを彎曲孔(2)の内+rbに圧入
する。なお、鴬・状ンそ月(¥!+1が外径t&乙ym
、肉1’、/’ 3 mm、全長/ 23 rnts)
−1−クン合金製のパイプである場合に押型(7)に作
用させる全荷重は25)ン程度であり、管状素材いUま
第2の押型(7)の大径部(7a)の下!/]i1fの
段部(7C)により後端を押圧されて前進しへらに11
曲孔(2)に沿って塑性変形されるが、球体(0)もま
た第!の押型(7)の小径+、ilf (7b)の下端
により下方に11七入されるので管状−(ぐ拐−の何曲
部C2a)により塑性及形を生ずる部分の内面は31(
体(6)により保持されつつ塑性iJしが進イーiする
。次に、第を図のように球体(6)と同径の3ホ体(8
)を管状素材い)の内部に追加供給したうえ、前記と同
様にSiS2の押型(7)よりも長い大径部(9a)を
持つ第3の押型(9)により管状);り月い薯と球体(
8)とを何曲孔(2)の内部へ圧入ずれば、賃状素月ψ
歩は球体(0)と球体(8)によって内面を保持されつ
つ彎曲部L2a)の11条状に沿って塑性変形さノしる
。次に、第S図のようにさらに球体O0を管状素4A’
 GffJの内部にさらに7個追加供給したつえ、第3
の押型(9)よりもさらに畏い大径部(//句を持つ第
1)−の押型(II、lにより管状云(1”J(7)と
球体(10とを圧入ずれば看状素4J(7)Qまその先
端がストッパー金具(3)に当接するまでイ)曲孔(2
)内に圧入され、球体(6)、(8)、(l(1にまり
内面を保持されつつ31曲孔(2)に沿って最tl印形
状までfft qyト変形される。しかる後に第1の押
!’i’t (If)を引抜いてやV小径の球(+04
を管状素材い妙の内部に供給し、第11の押を0υによ
り球体θ4を用人すれば球体(t3) t、1ス1ツバ
−金具(3)の開1’1部から外部へ初出され、以−1
′−同様にして球体(3)、(l(拳を排出した徒に金
型(1)を開いて+1専f“jされたエルボを取1」3
ず。このように本発明においてC」、/nj状;:・;
利(4)は常にその内径とほぼ′コF Lい外径の球f
+ (0)、(3)、CIf# l/cより内面を保持
され一つつl1f1:i次塑PI: U形されるので、
夕1而形状が金型(1)により11.桶゛に成形される
ことは勿、論、内面形状も球体(6)、(8)、θOに
よりわ′り1tJt面か真円と/I:るよう寸法精度良
くしかう表面平滑にII’Z ノしされるものであり、
塑性艮形の際に内面に生じ易い凹凸fSの変形を完全に
防止することかできる。
Next, the first mold (5) is removed and the tubular element ', A' K)
Seven spheres (6) made of F11 having a diameter slightly smaller than the inner diameter are supplied into the inside of the tubular elements 4 and 4 from the rear end after being coated with lubricating oil as necessary. The tip of the four tubular materials begins to undergo plastic deformation at the top of the curved part Qa).
The sphere (6) is located at the top of the curve part (, 2a) at 9゛ζ
Sha element A, (tip 1 of (e):; 'd and stops, so as shown in Figure 3, 411 of 11゛5/
The second press die (7) has a large diameter part (7Il) longer than the first die (5), and a 9'i'' shaped 'JC lever (4) is formed.
Press the rear end of the sphere (6) into the curved hole (2) +rb. In addition, Tsumugi, state, and month (¥!+1 is the outer diameter t & otym
, flesh 1', /' 3 mm, total length / 23 rnts)
-1- In the case of a pipe made of Kuhn alloy, the total load acting on the die (7) is about 25) tons, and the tubular material U is below the large diameter part (7a) of the second die (7). ! /] The rear end is pressed by the stepped part (7C) of i1f and moves forward to the spatula 11
Although it is plastically deformed along the curved hole (2), the sphere (0) is also the first! Since the small diameter of the pressing die (7) is inserted downward by the lower end of the ilf (7b), the inner surface of the part that produces plastic deformation due to the tubular shape (the curved part C2a of the tube) is 31 (
The plasticity progresses while being held by the body (6). Next, as shown in the figure, the sphere (6) and the 3-hole body (8) with the same diameter.
) is additionally supplied into the inside of the tubular material tube), and the third press die (9) having the large diameter part (9a) longer than the SiS2 press die (7) is used to form a tube); and sphere (
8) and into the inside of the hole (2), the monthly rent ψ
The step is plastically deformed along the 11 stripes of the curved portion L2a) while the inner surface is held by the sphere (0) and the sphere (8). Next, as shown in FIG.
Seven more canes were added inside GffJ, the third
If you press the tubular shape (1"J (7) and the sphere (10) into the large diameter part (first with // phrase) by pressing the mold (II, l) A) Bent hole (2) until the tip of element 4J (7) Q comes into contact with stopper fitting (3).
), and the spheres (6), (8), (1) are deformed along the 31 curved hole (2) to the shape of the tl mark while holding the inner surface. Press 1!'i't (If) and pull out the V small diameter ball (+04
If the sphere θ4 is supplied into the inside of the tubular material and the 11th push is applied to 0υ, the sphere (t3) will be exposed to the outside from the opening 1'1 of the metal fitting (3). , more-1
'-Similarly, open the mold (1) with the sphere (3), (l) (after ejecting the fist, and remove the elbow that was +1 f"j" 3
figure. In this way, in the present invention, C'', /nj-like;:・;
(4) is always approximately the same as its inner diameter.
+ (0), (3), CIf# Since the inner surface is held from l/c and one l1f1: i-th plastic PI: U-shaped,
The shape is 11. due to the mold (1). Of course, the inner shape is determined by the spheres (6), (8) and θO. Z is recognized,
It is possible to completely prevent the deformation of the unevenness fS that tends to occur on the inner surface during plastic shaping.

(発明の効果) 本発明は以上の説明からも明らかな」二うに、管状素材
をエルボ成形用の彎曲化に圧入してエルボを製造するも
のであるから、チタン合金のような溶接用σ4tな金属
製のエルボをも((シ造することが可能であり、また、
押型による1]・9人のヴでエルホをjit!I造する
ことができるので従来法のように(j抜き、溶接、後加
」二等のHH!111++な工程を安するとどかない。
(Effects of the Invention) As is clear from the above description, the present invention manufactures an elbow by press-fitting a tubular material into a curved shape for elbow forming. It is also possible to make a metal elbow ((),
1] ・Jit Elho with 9 people! Since it can be manufactured by I, it is not possible to cheaply perform HH!111++ processes like conventional methods (J punching, welding, post-addition).

しかも、9゛(7状素利はその内径よりf′1“fかに
小径の」ユJ(体により内面を保持されつり「!1曲孔
の内部に圧入さiして何曲孔の形状にl’F’tつて塑
匪剥形さiしるので、得られプこエルホの外表面のみな
らず内表面も寸法f1″1度良くしかも表面平淫iに成
形され、流動Jjk抗の少ない((jれた品質の工/レ
ボとなるもので、本発明は従来のエルボの製イy方法の
間胆点f:解決したものとして業界の発展に寄与すると
ころ極めて大なものである。
Moreover, the inner surface is held by the body, and the inner surface is held by the body, and the number of curved holes is Since the shape is determined by plastic exfoliation, not only the outer surface but also the inner surface of the obtained puerho is molded to have a dimension f1''1 degree better and a flat surface i, so that it has a good flow resistance. The present invention contributes greatly to the development of the industry as it solves the problems of conventional elbow manufacturing methods. be.

を図面のρIi単な1況明 εIs /図、第2図、第3ヒ1、’i+”t <’ 
tc;J、第S図、第3図はいずれも本発明の実施例の
工程説明図である。
ρIi of the drawing simply 1 situation light εIs / Figure 2, Figure 3 H1, 'i+"t <'
tc;J, FIG. S, and FIG. 3 are all process explanatory diagrams of an embodiment of the present invention.

(1):金型、(2) : FW 曲孔、(り) ’ 
MS / (7J押型、(6);g体、(7) : 2
B 2 (7) 押S、L8J : f=i< (4<
、(!1) ”ds 3 tD押型、(1す:球体、(
lυ:第tの押ハリ、(4)二釦′状素(7]。
(1): Mold, (2): FW curved hole, (ri)'
MS / (7J press mold, (6); g body, (7): 2
B 2 (7) Press S, L8J: f=i<(4<
, (!1) "ds 3 tD press mold, (1: sphere, (
lυ: t-th push, (4) two-button'-like element (7).

’I”J’ !出ムl(+人 高寡」二業((、式会社
、同 綿 1゛↓ ;・? /a 々 2仝 m 5 に、1 第 61′A a
'I"J' !Output (+Person High and Low) 2 Businesses ((, Shikisha, same cotton 1゛↓ ;・? /a 2㻝m 5, 1 61'A a

Claims (1)

【特許請求の範囲】[Claims] 金型に股りられたエルボ成形用の彎曲孔の端部から管状
素材を挿入するとともに管状スく洞内にその内径より僅
かに小径の球体を供紹して押型により該管状累月を何曲
孔の内部に圧入し、前記球体により内面を保持し7つつ
管状素A′イをや1f曲孔に沿って塑性変形させること
を特徴とするエルボの」;!!造方法。
A tubular material is inserted from the end of the curved hole for elbow forming in the mold, and a sphere with a diameter slightly smaller than the inner diameter is introduced into the hollow of the tubular cavity. The elbow is press-fitted into the curved hole, and while the inner surface is held by the sphere, the tubular element A' is plastically deformed along the curved hole. ! Construction method.
JP21058083A 1983-11-09 1983-11-09 Manufacture of elbow Granted JPS60102230A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21058083A JPS60102230A (en) 1983-11-09 1983-11-09 Manufacture of elbow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21058083A JPS60102230A (en) 1983-11-09 1983-11-09 Manufacture of elbow

Publications (2)

Publication Number Publication Date
JPS60102230A true JPS60102230A (en) 1985-06-06
JPH0318967B2 JPH0318967B2 (en) 1991-03-13

Family

ID=16591662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21058083A Granted JPS60102230A (en) 1983-11-09 1983-11-09 Manufacture of elbow

Country Status (1)

Country Link
JP (1) JPS60102230A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009233709A (en) * 2008-03-27 2009-10-15 Ihi Corp Extrusion bending apparatus
JP2012143772A (en) * 2011-01-11 2012-08-02 Tokyo Metropolitan Industrial Technology Research Institute Method and tool for bending titanium member
KR101503054B1 (en) * 2014-01-13 2015-03-13 송인도 Formation method of elbow of double pipe type

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009233709A (en) * 2008-03-27 2009-10-15 Ihi Corp Extrusion bending apparatus
JP2012143772A (en) * 2011-01-11 2012-08-02 Tokyo Metropolitan Industrial Technology Research Institute Method and tool for bending titanium member
KR101503054B1 (en) * 2014-01-13 2015-03-13 송인도 Formation method of elbow of double pipe type

Also Published As

Publication number Publication date
JPH0318967B2 (en) 1991-03-13

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