JPS6124603B2 - - Google Patents
Info
- Publication number
- JPS6124603B2 JPS6124603B2 JP72380A JP72380A JPS6124603B2 JP S6124603 B2 JPS6124603 B2 JP S6124603B2 JP 72380 A JP72380 A JP 72380A JP 72380 A JP72380 A JP 72380A JP S6124603 B2 JPS6124603 B2 JP S6124603B2
- Authority
- JP
- Japan
- Prior art keywords
- inner tube
- mixed gas
- rectifier
- tube
- core wire
- 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
- 239000007789 gas Substances 0.000 claims description 77
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 42
- 239000001301 oxygen Substances 0.000 claims description 42
- 229910052760 oxygen Inorganic materials 0.000 claims description 42
- 238000005520 cutting process Methods 0.000 claims description 27
- 239000002737 fuel gas Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 238000005304 joining Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 238000011949 advanced processing technology Methods 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/52—Nozzles for torches; for blow-pipes
- F23D14/54—Nozzles for torches; for blow-pipes for cutting or welding metal
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
本発明はガス切断火口の製造方法に関し、その
要旨とするところは、中心に切断酸素出口孔８を
設けた内管３の外周面前部に混合ガス整流部９を
溝状に穿設し、内管３を外管２内へ挿入した後、
内管３の混合ガス整流部９内にピアノ線のような
芯線２０を挿通させ、内管３と共に外管２の先部
にスエージングを施し、スエージング後に混合ガ
ス整流部９から芯線２０を抜いて混合ガス整流部
９を孔状に成形することを特徴とするガス切断火
口の製造方法を特定発明とし、併せて中心に切断
酸素出口孔８を設けた内管３の外周面前部に混合
ガス整流部９を溝状に穿設し、内管３を外管２に
挿入して内管３の後部と外管２内周との間に環状
に隙間１０を設けてノズル本体４を形成し、内管
３の混合ガス整流部９内にピアノ線のような芯線
２０を挿通させて内管３と共に外管２の先部にス
エージングを施し、スエージング後に混合ガス整
流部９から芯線２０を抜いて混合ガス整流部９を
孔状に成形し、予熱酸素入口５、燃料ガス入口
６、切断酸素入口孔７を有する胴中１を上記ノズ
ル本体４の後端部に一体に接合することを特徴と
するガス切断火口の製造方法を第一併合発明と
し、更に併せて中心に切断酸素出口孔８を設けた
内管３の外周面に全長に亘り混合ガス整流部９を
溝状に穿設し、内管３を外管２に挿入してノズル
本体４を形成し、内管３の混合ガス整流部９内に
ピアノ線のような芯線２０を挿通させて内管３と
共に外管２の先部にスエージングを施し、スエー
ジング後に混合ガス整流部９から芯線２０を抜い
て混合ガス整流部９の前部を孔状に成形し、予熱
酸素入口５、燃料ガス入口６、切断酸素入口孔７
を有する胴中１を上記ノズル本体４の後端部に一
体に接合することを特徴とするガス切断火口の製
造方法を第二併合発明とする発明に係るものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a gas cutting nozzle. After inserting the inner tube 3 into the outer tube 2,
A core wire 20 such as a piano wire is inserted into the mixed gas rectifying section 9 of the inner tube 3, and the tip of the outer tube 2 is swaged together with the inner tube 3. After swaging, the core wire 20 is inserted from the mixed gas rectifying section 9. The specified invention is a method of manufacturing a gas cutting nozzle characterized by forming a mixed gas rectifying part 9 into a hole shape by removing the mixed gas, and also forming a mixed gas on the front outer circumferential surface of the inner tube 3 having a cutting oxygen outlet hole 8 in the center. A gas rectifying section 9 is bored in a groove shape, an inner tube 3 is inserted into the outer tube 2, and an annular gap 10 is provided between the rear part of the inner tube 3 and the inner periphery of the outer tube 2 to form the nozzle body 4. Then, a core wire 20 such as a piano wire is inserted into the mixed gas rectifying section 9 of the inner tube 3, and the tip of the outer tube 2 is swaged together with the inner tube 3. After swaging, the core wire 20 is inserted from the mixed gas rectifying section 9. 20 is removed and the mixed gas rectifying part 9 is formed into a hole shape, and the middle body 1 having a preheating oxygen inlet 5, a fuel gas inlet 6, and a cutting oxygen inlet hole 7 is integrally joined to the rear end of the nozzle body 4. The first combined invention is a method for manufacturing a gas cutting nozzle characterized by the above, and furthermore, a mixed gas rectifying portion 9 is formed in the form of a groove over the entire length of the inner tube 3 having a cutting oxygen outlet hole 8 in the center thereof. The inner tube 3 is inserted into the outer tube 2 to form the nozzle body 4, and a core wire 20 such as a piano wire is inserted into the mixed gas rectifying section 9 of the inner tube 3 to form the outer tube together with the inner tube 3. After swaging, the core wire 20 is pulled out from the mixed gas rectifying part 9, and the front part of the mixed gas rectifying part 9 is formed into a hole shape, and the preheating oxygen inlet 5, fuel gas inlet 6, and cutting are performed. Oxygen inlet hole 7
The second combined invention is a method for manufacturing a gas cutting nozzle characterized by integrally joining the body 1 having the above-mentioned nozzle body 4 to the rear end portion of the nozzle body 4.
従来のガス切断火口（例えば、特公昭54―3652
号公報）にあつては、第１図又は第２図に示すよ
うに、ガス切断火口A′を胴中１′とノズル本体
４′との２個のブロツクに分割し、胴中１′は加工
性の良い真鍮等の金属を使用して製造し、ノズル
本体４′は耐熱性、熱伝導性を具備しかつ高温に
おいて被切断材と反応したり溶融点の低い合金を
作る恐れのない銅、ステンレス等の金属を使用し
て製造し、ノズル本体４′には膨張混合室１１′、
混合ガス整流部９′、切断酸素出口孔８′を夫々穿
孔し、胴中１′には予熱酸素入口５′、燃料ガス入
口６′、混合室１２′切断酸素入口孔７′を夫々穿
孔し、ノズル本体４′と胴中１′とを一体に接合し
ていた。従つて、接合時にノズル本体４′の膨張
混合室１１′と胴中１′の混合室１２′との穴合わ
せが必要であり、しかも膨張混合室１１′も混合
室１２′も外から見えず穴合わせが困難であり、
このためノズル本体４′と胴中１′の接合手段が複
雑となつていた。すなわち第１図に示すものはパ
イプ１３を使用して両者を接合したものであり、
第２図に示すものはノズル本体４′のフランジ１
４と胴中１′のグループを嵌合させて接合したも
のである。しかしながら真鍮等に比べて加工しに
くい銅やステンレス製のノズル本体４′に膨張混
合室１１′や混合ガス整流部９′を設けるために複
数本の長い孔をあけねばならず、穴明け加工が非
常に難しく、高度の加工技術と熟練及び高価な機
械設備が必要であつて生産性が極めて悪いという
欠点があり、更にこの穴明け加工の困難性のため
に不良品の発性率が高く、加工精度が悪い等の欠
点があつた。そこで本発明の発明者は、前端部に
絞りをかけて内周面を所定形状に成形した外管内
に内管を挿入し、外管の内周と内管の外周との間
に混合ガス整流部を形成し、後端に胴中を接合し
たものを先に出願し、これは特開昭53―37163号
公報により開示されたが（図示せず）、この方法
では絞りをかけられるのは外管のみであり、また
内管を外管を一体化する工程を要して生産性が悪
く、また混合ガス整流部の精度を余り大きくする
ことができず、小さな径の混合ガス整流部を成形
するのは困難があつた。 Conventional gas cutting crater (for example, Special Publication 54-3652
As shown in Fig. 1 or 2, the gas cutting nozzle A' is divided into two blocks, the middle body 1' and the nozzle body 4', and the middle body 1' is divided into two blocks. Manufactured using metals such as brass that have good workability, and the nozzle body 4' is made of copper, which has heat resistance and thermal conductivity, and does not react with the material to be cut at high temperatures or create alloys with a low melting point. , is manufactured using metal such as stainless steel, and the nozzle body 4' has an expansion mixing chamber 11',
A mixed gas rectifying section 9' and a cutting oxygen outlet hole 8' are bored, respectively, and a preheating oxygen inlet 5', a fuel gas inlet 6', and a cutting oxygen inlet hole 7' in the mixing chamber 12' are bored in the body 1'. , the nozzle body 4' and the middle body 1' were integrally joined. Therefore, when joining, it is necessary to align the holes of the expansion mixing chamber 11' of the nozzle body 4' and the mixing chamber 12' of the body 1', and furthermore, neither the expansion mixing chamber 11' nor the mixing chamber 12' can be seen from the outside. It is difficult to match the holes,
For this reason, the means for joining the nozzle main body 4' and the middle barrel 1' has become complicated. In other words, the one shown in FIG. 1 is one in which the two are joined using a pipe 13.
The one shown in Figure 2 is the flange 1 of the nozzle body 4'.
4 and the group 1' in the body are fitted and joined together. However, in order to provide the expansion mixing chamber 11' and the mixed gas rectification section 9' in the nozzle body 4', which is made of copper or stainless steel, which is difficult to machine compared to brass, etc., multiple long holes must be drilled. It is very difficult, requires advanced processing technology, skill, and expensive machinery and equipment, and has the disadvantage of extremely low productivity.Furthermore, due to the difficulty of this drilling process, the incidence of defective products is high. There were drawbacks such as poor processing accuracy. Therefore, the inventor of the present invention inserted an inner tube into an outer tube whose inner circumferential surface was shaped into a predetermined shape by constricting the front end, and rectified the mixed gas between the inner circumference of the outer tube and the outer circumference of the inner tube. The first application was filed for a method in which a section was formed and the body was joined to the rear end, and this was disclosed in Japanese Patent Application Laid-open No. 53-37163 (not shown). Only the outer tube is required, and the process of integrating the inner tube and the outer tube is bad, resulting in poor productivity.Also, the accuracy of the mixed gas rectifier cannot be increased very much, so it is difficult to use a mixed gas rectifier with a small diameter. It was difficult to mold.
本発明は叙上の従来例の欠点に鑑みて為された
ものであり、その目的とするところはノズル本体
への長い穴明け加工が不要でしかも均一な径の混
合ガス整流部を簡単に成形することができて加工
精度を向上でき、生産性を向上させ、不良品の発
生率を低下させることができ、加えて特定発明で
は簡単に混合ガス整流部（膨張混合室）と胴中の
混合室とを簡単に穴合わせすることができるよう
にすることにある。 The present invention has been made in view of the drawbacks of the conventional examples mentioned above, and its purpose is to easily form a mixed gas rectifier with a uniform diameter without the need for drilling long holes in the nozzle body. It is possible to improve processing accuracy, improve productivity, and reduce the incidence of defective products.In addition, the specific invention allows for easy mixing between the mixed gas rectifier (expansion mixing chamber) and the inside of the cylinder. The purpose is to make it possible to easily match the holes with the chamber.
以下本発明を添付図により詳述する。ガス切断
火口Ａは胴中１、外管２及び内管３の３個のブロ
ツクに分割され、第４図に示されるような３個の
素材から製造される。胴中１は加工性の良い真鍮
が用いられるものであり、胴中１には中央に切断
酸素入口孔７を穿孔し、切断酸素入口孔７と平行
にその周囲に６本の予熱酸素入口５を穿孔し、胴
中１の外周に予熱酸素入口５に連通する燃料ガス
入口６を環状に穿設し、予熱酸素入口５よりも前
方に予熱酸素入口５と連通するやや大径の混合室
１２を穿設してある。外管２は耐熱性及び熱伝導
性に優れ、かつ高温において被切断材と反応した
り、溶融点の低い合金を作るおそれのない銅やス
テンレスが用いられ、外管２の外周前端部には予
めテーパを施して小径部１５とし、外管２の内周
後端部を大径に拡開して膨張混合室１１を形成し
てある。内管３は銅やステンレスにより形成され
ており、内管３の中心には前方へ行くほど内径が
小となるように切断酸素出口孔８を穿孔し、内管
３の外周面前部には６状の溝状の混合ガス整流部
９を切入してあるが、この溝切加工はフライス盤
等を用いて簡単に行えるものである。この内管３
の後端を胴中１の嵌合孔１６に嵌合して切断酸素
入口孔７と切断酸素出口孔８とを連通させ、内管
３と胴中１とを銀ろう１７等でろう付けし、更に
内管３を外管２の内周に挿入してノズル本体４を
構成し、外管２後端を胴中１の環状溝１８に嵌合
して銀ろう１９にてろう付けし、内管３の外周面
後部と外管２内周との間には環状に隙間１０を構
成する。この後内面清掃処理を施し、更に各混合
ガス整流部９に適当な太さのピアノ線のような芯
線２０を挿入し、芯線２０を挿入したままでノズ
ル本体４の前部に回転転打装置２１でスエージン
グを実施して絞りを施し、外管２の前部内周を内
管３の前部外周に密着させ、芯線２０を混合ガス
整流部９から引き抜くと混合ガス整流部９が丸孔
状に成形されるのである。上記の回転転打装置２
１とは第１１図に示すような構造を持つものであ
り、外ドラム２２と内ドラム２３とが異なる角速
度で回転しており、内ドラム２３には径方向にス
ライド自在なバツテイングロツド２４を挿着して
あり、バツテイングロツド２４の後端が外ドラム
２２内周の突起２５上を摺動するとバツテイング
ロツド２４は中心方向へ打ち出され、このバツテ
イングロツド２４が更に成形用チツプ２６を叩い
てこの成形用チツプ２６により中心にセツトされ
たノズル本体４を連続的に打つてノズル本体４の
前部に絞りをかけるものである。最後に胴中１の
外周にテーパ処理を施し、ノズル本体４にクロム
めつき２７のような表面処理を行う。しかして燃
料ガス入口６から流入したアセチレンガスのよう
な燃料ガスと予熱酸素入口５より流入した酸素は
混合室１２で混合されて更に膨張混合室１１で完
全に混合され、隙間１０を通つて混合ガス整流部
９へ流れるものであり、このように混合ガス整流
部９と混合室１２とは環状の隙間１０を介して連
絡されているから、両者の位置合わせが不要で組
立が簡単に行なわれるものである。 The present invention will be explained in detail below with reference to the accompanying drawings. The gas cutting nozzle A is divided into three blocks, a middle shell 1, an outer tube 2 and an inner tube 3, and is manufactured from three materials as shown in FIG. The middle body 1 is made of brass with good workability, and the middle body 1 has a cut oxygen inlet hole 7 bored in the center, and six preheated oxygen inlets 5 around the cut oxygen inlet hole 7 in parallel with the cut oxygen inlet hole 7. A fuel gas inlet 6 communicating with the preheating oxygen inlet 5 is bored in the outer periphery of the shell 1 in an annular shape, and a slightly larger diameter mixing chamber 12 communicating with the preheating oxygen inlet 5 is provided in front of the preheating oxygen inlet 5. has been drilled. The outer tube 2 is made of copper or stainless steel, which has excellent heat resistance and thermal conductivity, and is not likely to react with the material to be cut at high temperatures or form an alloy with a low melting point. The outer tube 2 is tapered in advance to form a small diameter portion 15, and the inner peripheral rear end portion of the outer tube 2 is expanded to a large diameter to form an expansion mixing chamber 11. The inner tube 3 is made of copper or stainless steel, and a cutting oxygen outlet hole 8 is bored in the center of the inner tube 3 so that the inner diameter becomes smaller toward the front. A groove-shaped mixed gas rectifying section 9 is cut into the groove, but this groove cutting can be easily performed using a milling machine or the like. This inner tube 3
The rear end is fitted into the fitting hole 16 of the middle body 1 to communicate the cutting oxygen inlet hole 7 and the cutting oxygen outlet hole 8, and the inner tube 3 and the middle body 1 are brazed with silver solder 17 or the like. Further, the inner tube 3 is inserted into the inner periphery of the outer tube 2 to form the nozzle body 4, and the rear end of the outer tube 2 is fitted into the annular groove 18 in the middle body 1 and brazed with silver solder 19. An annular gap 10 is formed between the rear part of the outer circumferential surface of the inner tube 3 and the inner circumference of the outer tube 2. After that, the inner surface is cleaned, and a core wire 20 such as a piano wire of an appropriate thickness is inserted into each mixed gas rectifying section 9. With the core wire 20 inserted, a rotary rolling device is attached to the front part of the nozzle body 4. Swaging is performed in step 21 to apply aperture, so that the front inner periphery of the outer tube 2 is brought into close contact with the front outer periphery of the inner tube 3, and when the core wire 20 is pulled out from the mixed gas rectifying section 9, the mixed gas rectifying section 9 forms a round hole. It is formed into a shape. The above rotary rolling device 2
1 has a structure as shown in FIG. 11, in which an outer drum 22 and an inner drum 23 rotate at different angular velocities, and the inner drum 23 has a butting rod 24 that can freely slide in the radial direction. is inserted, and when the rear end of the batting rod 24 slides on the protrusion 25 on the inner periphery of the outer drum 22, the batting rod 24 is ejected toward the center, and this batting rod 24 is further molded. The nozzle body 4 set at the center is continuously struck by the shaping chip 26 to apply aperture to the front part of the nozzle body 4. Finally, the outer periphery of the middle barrel 1 is tapered, and the nozzle body 4 is subjected to surface treatment such as chrome plating 27. Thus, the fuel gas such as acetylene gas that has flowed in from the fuel gas inlet 6 and the oxygen that has flowed in from the preheated oxygen inlet 5 are mixed in the mixing chamber 12, further mixed completely in the expansion mixing chamber 11, and then mixed through the gap 10. Since the mixed gas rectifier 9 and the mixing chamber 12 are connected through the annular gap 10, assembly is easy because there is no need to align the two. It is something.
第７図に示すものは本発明の他例であり、既述
の第一の実施例とは内管３が相違するものであ
る。すなわち内管３の後端は外管２に挿入された
ときに膨張混合室１１に沿うように大径に形成さ
れており、この大径部分２８には膨張混合室１１
を閉じてしまわないように混合ガス整流部９の深
さを深くしてある。この実施例も第一の実施例と
同様に組み立てられるものであるが、混合ガス整
流部９を内管３の全長に亘つて設けてあるから、
内管３と胴中１を接合する際に混合ガス整流部９
の溝と混合室１２の孔とが一直線状に合致するよ
うに穴合わせを行えるものであり、穴合わせを行
う場合に内管３の混合ガス整流部９が外部から見
えるから穴合わせを簡単に行え、従来例のように
接合用のパイプ１３やフランジ１４等を必要とし
ないものである。このように穴合わせを行つてお
けばガス切断火口Ａの予熱酸素入口５から混合ガ
ス整流部９にかけての孔の掃除を行えるのであ
る。 The one shown in FIG. 7 is another example of the present invention, and the inner tube 3 is different from the first example described above. That is, the rear end of the inner tube 3 is formed to have a large diameter along the expansion mixing chamber 11 when inserted into the outer tube 2, and the expansion mixing chamber 11 is formed in this large diameter portion 28.
The depth of the mixed gas rectifying section 9 is made deep to prevent the gas from closing. This embodiment is assembled in the same manner as the first embodiment, but since the mixed gas rectifier 9 is provided over the entire length of the inner tube 3,
When joining the inner tube 3 and the middle body 1, the mixed gas rectifier 9
The holes can be aligned so that the grooves of the grooves and the holes of the mixing chamber 12 match in a straight line, and when aligning the holes, the mixed gas rectifying section 9 of the inner tube 3 can be seen from the outside, making it easy to align the holes. This method does not require the pipe 13, flange 14, etc. for joining unlike the conventional example. By aligning the holes in this manner, the holes from the preheated oxygen inlet 5 of the gas cutting nozzle A to the mixed gas rectifying section 9 can be cleaned.
本発明のガス切断火口の製造方法は、叙述の如
く中心に切断酸素出口孔を設けた内管の外周面前
部に混合ガス整流部を溝状に穿設し、内管を外管
内へ挿入した後、内管の混合ガス整流部内にピア
ノ線のような芯線を挿通させ、内管と共に外管の
先部にスエージングを施し、スエージング後に混
合ガス整流部から芯線を抜いて混合ガス整流部を
孔状に成形しているから、穴明け加工のような困
難な加工を行うことなく混合ガス整流部を成形す
ることができ、外管内に内管を挿入した後スエー
ジングしているのので、外管と内管の成形を一工
程で行なえ、同時に外管と内管との一体化も行な
え、生産性に優れたものであり、しかもスエージ
ング時には混合ガス整流部内にピアノ線のような
芯線を通しているので、圧力で混合ガス整流部が
潰れることがなく、均一な径の混合ガス整流部を
成形でき且つ小さな径の混合ガス整流部でも精密
に成形できて成形精度を高めることができるとい
う効果がある。加えて第一併合発明にあつては中
心に切断酸素出口孔を設けた内管の外周面前部に
混合ガス整流部を溝状に穿設し、内管を外管に挿
入して内管の後部と外管内周との間に環状に隙間
を設けてノズル本体を形成し、内管の混合ガス整
流部内にピアノ線のような芯線を挿通させて内管
と共に外管の先部にスエージングを施し、スエー
ジング後に混合ガス整流部から芯線を抜いて混合
ガス整流部を孔状に成形し、予熱酸素入口、燃料
ガス入口、切断酸素入口孔を有する胴中を上記ノ
ズル本体の後端部に一体に接合しているから、胴
中の予熱酸素入口とノズル本体の混合ガス整流部
とを穴合わせる必要がなく、簡易かつ迅速に組み
立てることができるという利点がある。また、第
二併合発明にあつては中心に切断酸素出口孔を設
けた内管の外周面に全長に亘り混合ガス整流部を
溝状に穿設し、内管を外管に挿入してノズル本体
を形成し、内管の混合ガス整流部内にピアノ線の
ような芯線を挿通させて内管と共に外管の先部に
スエージングを施し、スエージング後に混合ガス
整流部から芯線を抜いて混合ガス整流部の前部を
孔状に成形し、予熱酸素入口、燃料ガス入口、切
断酸素入口孔を有する胴中を上記ノズル本体の後
端部に一体に接合しているから、混合ガス整流部
と胴中の予熱酸素入口とが一致するように胴中と
内管とを接合でき、しかも接合に当つては内管の
混合ガス整流部を視認しながら容易に行えて従来
例のような接合用のパイプやフランジを必要とし
ない利点があり、このように穴合わせしておくこ
とにより容易に孔の掃除を行えるものである。 As described above, the method for manufacturing the gas cutting nozzle of the present invention is as follows: As described above, a mixed gas rectifying section is bored in the front part of the outer circumferential surface of an inner tube having a cutting oxygen outlet hole in the center, and the inner tube is inserted into the outer tube. After that, insert a core wire such as a piano wire into the mixed gas rectifier of the inner tube, swage the tip of the outer tube together with the inner tube, and after swaging, remove the core wire from the mixed gas rectifier and remove the core wire from the mixed gas rectifier. Since the tube is formed into a hole shape, the mixed gas rectifier can be formed without difficult processing such as drilling, and the inner tube is swaged after being inserted into the outer tube. , the outer and inner tubes can be formed in one step, and the outer and inner tubes can also be integrated at the same time, resulting in excellent productivity.Moreover, during swaging, a piano wire-like wire is placed inside the mixed gas rectifier. Because the core wire is passed through, the mixed gas rectifier will not be crushed by pressure, and it is possible to mold a mixed gas rectifier with a uniform diameter.Even small diameter mixed gas rectifiers can be formed precisely, increasing molding accuracy. effective. In addition, in the first combined invention, a mixed gas rectifying section is bored in the front part of the outer circumferential surface of the inner tube with a cut oxygen outlet hole in the center, and the inner tube is inserted into the outer tube. A nozzle body is formed by creating an annular gap between the rear part and the inner periphery of the outer tube, and a core wire like piano wire is inserted into the mixed gas rectifying part of the inner tube and swaged to the tip of the outer tube together with the inner tube. After swaging, the core wire is removed from the mixed gas rectifier, the mixed gas rectifier is formed into a hole shape, and the inside of the body, which has a preheated oxygen inlet, a fuel gas inlet, and a cut oxygen inlet hole, is inserted into the rear end of the nozzle body. Since it is integrally joined to the nozzle, there is no need to align the preheated oxygen inlet in the shell and the mixed gas rectifier in the nozzle body, which has the advantage that it can be assembled easily and quickly. In addition, in the case of the second combined invention, a mixed gas rectifying section is bored in the form of a groove over the entire length on the outer peripheral surface of the inner tube having a cut oxygen outlet hole in the center, and the inner tube is inserted into the outer tube to form a nozzle. Form the main body, insert a core wire like a piano wire into the mixed gas rectifier of the inner tube, swage the tip of the outer tube together with the inner tube, and after swaging, remove the core wire from the mixed gas rectifier to mix. Since the front part of the gas rectifying part is formed into a hole shape, and the body having a preheating oxygen inlet, a fuel gas inlet, and a cutting oxygen inlet hole is integrally joined to the rear end of the nozzle body, the mixed gas rectifying part The inner tube and the inner tube can be joined so that the preheated oxygen inlet in the inner tube is aligned with the preheated oxygen inlet in the inner tube, and the joining can be easily done while visually checking the mixed gas rectification part of the inner tube, unlike conventional joining. This has the advantage of not requiring any additional pipes or flanges, and by aligning the holes in this way, the holes can be cleaned easily.
第１図及び第２図は夫々従来例を示す断面図、
第３図は本発明の一従来例を示す断面図、第４図
は同上の加工前の分解斜視図、第５図は同上の加
工前の断面図、第６図ａは第３図及び第５図のＢ
―Ｂ断面図、第６図ｂは第３図のＣ―Ｃ断面図、
第６図ｃは第３図のＤ矢視図、第６図ｄは第５図
のＥ矢視図、第７図は本発明の他例を示す断面
図、第８図は同上の加工前の分解斜視図、第９図
は同上の加工前の断面図、第１０ａは第７図のＦ
―Ｆ断面図、第１０図ｂは第７図のＧ矢視図、第
１０図ｃは第９図のＨ―Ｈ断面図、第１０図ｄは
第９図の―断面図、第１１図は回転転打装置
の断面図である。
１……胴中、２……外管、３……内管、４……
ノズル本体、５……予熱酸素入口、６……燃料ガ
ス入口、７……切断酸素入口孔、８……切断酸素
出口孔、９……混合ガス整流部、１０……隙間、
２０……芯線。
FIG. 1 and FIG. 2 are sectional views showing conventional examples, respectively;
FIG. 3 is a sectional view showing a conventional example of the present invention, FIG. 4 is an exploded perspective view of the same before processing, FIG. 5 is a sectional view of the same before processing, and FIG. B in Figure 5
-B sectional view, Figure 6b is the CC sectional view of Figure 3,
Figure 6c is a view taken in the direction of arrow D in Figure 3, Figure 6d is a view taken in the direction of arrow E in Figure 5, Figure 7 is a sectional view showing another example of the present invention, and Figure 8 is the same before processing. Figure 9 is a cross-sectional view of the same before processing, Figure 10a is F in Figure 7.
-F sectional view, Fig. 10b is a view in the direction of arrow G in Fig. 7, Fig. 10c is a sectional view along H-H in Fig. 9, Fig. 10d is - sectional view in Fig. 9, Fig. 11 is a sectional view of the rotary rolling device. 1...Middle body, 2...Outer tube, 3...Inner tube, 4...
Nozzle body, 5... Preheating oxygen inlet, 6... Fuel gas inlet, 7... Cutting oxygen inlet hole, 8... Cutting oxygen outlet hole, 9... Mixed gas rectifier, 10... Gap,
20... Core wire.
Claims (1)
前部に混合ガス整流部を溝状に穿設し、内管を外
管内へ挿入した後、内管の混合ガス整流部内にピ
アノ線のような芯線を挿通させ、内管と共に外管
の先部にスエージングを施し、スエージング後に
混合ガス整流部から芯線を抜いて混合ガス整流部
を孔状に成形することを特徴とするガス切断火口
の製造方法。 ２ 中心に切断酸素出口孔を設けた内管の外周面
前部に混合ガス整流部を溝状に穿設し、内管を外
管に挿入して内管の後部と外管内周との間に環状
に隙間を設けてノズル本体を形成し、内管の混合
ガス整流部内にピアノ線のような芯線を挿通させ
て内管と共に外管の先部にスエージングを施し、
スエージング後に混合ガス整流部から芯線を抜い
て混合ガス整流部を孔状に成形し、予熱酸素入
口、燃料ガス入口、切断酸素入口孔を有する胴中
を上記ノズル本体の後端部に一体に接合すること
を特徴とするガス切断火口の製造方法。 ３ 中心に切断酸素出口孔を設けた内管の外周面
に全長に亘り混合ガス整流部を溝状に穿設し、内
管を外管に挿入してノズル本体を形成し、内管の
混合ガス整流部内にピアノ線のような芯線を挿入
させて内管と共に外管の先部にスエージングを施
し、スエージング後に混合ガス整流部から芯線を
抜いて混合ガス整流部の前部を孔状に成形し、予
熱酸素入口、燃料ガス入口、切断酸素入口孔を有
する胴中を上記ノズル本体の後端部に一体に接合
することを特徴とするガス切断火口の製造方法。[Claims] 1. A mixed gas rectifying section is bored in the front of the outer circumferential surface of the inner tube with a cut oxygen outlet hole in the center, and after the inner tube is inserted into the outer tube, the mixed gas in the inner tube is A core wire such as a piano wire is inserted into the rectifier, the tip of the outer tube is swaged along with the inner tube, and after swaging, the core wire is removed from the mixed gas rectifier to form the mixed gas rectifier into a hole shape. A method for manufacturing a gas cutting crater characterized by: 2. A mixed gas rectifier is bored in the front part of the outer circumferential surface of the inner tube with a cut oxygen outlet hole in the center, and the inner tube is inserted into the outer tube to connect the inner tube between the rear part of the inner tube and the inner circumference of the outer tube. A nozzle body is formed by providing an annular gap, a core wire like piano wire is inserted into the mixed gas rectifying part of the inner tube, and the tip of the outer tube is swaged together with the inner tube.
After swaging, the core wire is removed from the mixed gas rectifier, the mixed gas rectifier is formed into a hole shape, and the body, which has a preheating oxygen inlet, a fuel gas inlet, and a cut oxygen inlet hole, is integrated into the rear end of the nozzle body. A method for manufacturing a gas cutting crater characterized by joining. 3. A mixed gas rectifier is bored in the outer peripheral surface of the inner tube with a cut oxygen outlet hole in the center in the form of a groove over the entire length, and the inner tube is inserted into the outer tube to form a nozzle body. A core wire like a piano wire is inserted into the gas rectifier and the tip of the outer tube is swaged along with the inner tube. After swaging, the core wire is removed from the mixed gas rectifier and the front part of the mixed gas rectifier is shaped like a hole. A method for producing a gas cutting nozzle, comprising molding the nozzle into a body, and integrally joining a shell having a preheated oxygen inlet, a fuel gas inlet, and a cutting oxygen inlet hole to the rear end of the nozzle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP72380A JPS5697716A (en) | 1980-01-08 | 1980-01-08 | Gas cutting tip and method of producing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP72380A JPS5697716A (en) | 1980-01-08 | 1980-01-08 | Gas cutting tip and method of producing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5697716A JPS5697716A (en) | 1981-08-06 |
| JPS6124603B2 true JPS6124603B2 (en) | 1986-06-11 |
Family
ID=11481658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP72380A Granted JPS5697716A (en) | 1980-01-08 | 1980-01-08 | Gas cutting tip and method of producing same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5697716A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2424848B (en) * | 2003-12-22 | 2007-12-12 | Honda Motor Co Ltd | Method of forming member, valve guide and method of forming the valve guide, and method of forming tubular member |
| CN104801817A (en) * | 2015-03-24 | 2015-07-29 | 青岛科技大学 | Novel cutting opening and processing method thereof |
-
1980
- 1980-01-08 JP JP72380A patent/JPS5697716A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5697716A (en) | 1981-08-06 |
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