JP2002361359A - Manufacturing method for mouth piece for hose - Google Patents

Manufacturing method for mouth piece for hose

Info

Publication number
JP2002361359A
JP2002361359A JP2001169648A JP2001169648A JP2002361359A JP 2002361359 A JP2002361359 A JP 2002361359A JP 2001169648 A JP2001169648 A JP 2001169648A JP 2001169648 A JP2001169648 A JP 2001169648A JP 2002361359 A JP2002361359 A JP 2002361359A
Authority
JP
Japan
Prior art keywords
diameter
hole
hose
long hole
cold forging
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
Application number
JP2001169648A
Other languages
Japanese (ja)
Inventor
Takashi Okamoto
Noriyuki Torii
敬司 岡本
紀之 鳥居
Original Assignee
Kondo Seisakusho:Kk
株式会社近藤製作所
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 Kondo Seisakusho:Kk, 株式会社近藤製作所 filed Critical Kondo Seisakusho:Kk
Priority to JP2001169648A priority Critical patent/JP2002361359A/en
Publication of JP2002361359A publication Critical patent/JP2002361359A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To sufficiently make the most of the advantage of a cold forging method and contrive the reduction in costs. SOLUTION: The manufacturing method for a mouth piece for a hose is a manufacturing method for a mouth piece for a hose provided with a slim and long hole 10, wherein by forming a large diameter through hole 7 against a thick and short solid material 1, the material 1 is deformed into a sleeve shape 8, then by drawing the outer diameter against the sleeve shape 8, the slim and long hole 10 is formed.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する技術分野】本発明は、ホース用口金の製
造方法に関する。
[0001] The present invention relates to a method for manufacturing a hose base.
【0002】[0002]
【従来の技術】冷間鍛造法により孔明けをする場合、通
常、径の3倍以上の長さの孔を明けることは困難とされ
ているため、細く長い孔は切削加工により明けることが
多く、加工時間の長さや量産性の低さ、切粉処理の煩雑
さが問題となる。したがって、それらの問題を少しでも
改善する方法として、細く長い孔を有したホース用口金
を製造する場合に、以下のような2つの方法、が一
般的に知られている。
2. Description of the Related Art In the case of drilling by cold forging, it is usually difficult to drill a hole having a length three times or more the diameter. Therefore, a thin and long hole is often drilled by cutting. In addition, there are problems such as a long processing time, low mass productivity, and complicated chip processing. Therefore, the following two methods are generally known in the case of manufacturing a hose base having a thin and long hole as a method for improving these problems as much as possible.
【0003】既に細く長い孔が明いたパイプ材を原材
料として冷間鍛造を行う(例えば特開平9−29689
2号公報参照) 孔の明け易い中間成形品(塑性加工や切削加工又はそ
の併用による)を原材料として冷間鍛造を行う(例えば
特開平9−303645号公報参照)
[0003] Cold forging is carried out using a pipe material having a thin and long hole as a raw material.
Cold forging is performed using an intermediate molded product (by plastic working or cutting or a combination thereof), which is easy to form holes, as a raw material (see, for example, JP-A-9-303645).
【0004】[0004]
【発明が解決しようとする課題】しかしながら、上記
、共にその原材料を準備するための設備が別途必要
になり、原材料費が高くなる。また、のように中間成
形品の孔明けをする際、上述したように径の3倍以上の
孔明けは困難であるため、孔明けを数回の工程に分ける
必要があり、やはりコスト高につながる。さらに、細い
ピン(金型)で孔を打ち抜くため、金型寿命に問題があ
り、金型費の増加によるコスト高も考えられる。
However, both of the above require separate equipment for preparing the raw materials, which increases the raw material costs. Further, when drilling an intermediate molded product as described above, it is difficult to drill a hole having a diameter three times or more as described above, so it is necessary to divide the drilling into several steps, which also increases the cost. Connect. Furthermore, since the hole is punched out with a thin pin (die), there is a problem in the life of the die, and the cost of the die may be increased due to an increase in die cost.
【0005】このように、細く長い孔を有したホース用
口金を製造する場合、冷間鍛造法による孔明けを行うこ
とは、切削加工による孔明けに比して利点を有するもの
の、従来の方法では冷間鍛造法の優れた利点(寸法安定
性、量産性等)を十分に活かしきれておらず、その分コ
スト高を招くことになる。
[0005] As described above, in the case of manufacturing a hose die having a narrow and long hole, performing the drilling by the cold forging method has an advantage as compared with the drilling by the cutting process, but the conventional method. However, the excellent advantages (dimensional stability, mass productivity, etc.) of the cold forging method cannot be fully utilized, resulting in an increase in cost.
【0006】本発明は、上記のような従来の問題点を解
決することを目的としてなされたものであり、冷間鍛造
法の優れた利点を十分に活かすことができ、コスト低減
を図ることができるホース用口金の製造方法を提供する
ことを目的とする。
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and can make full use of the excellent advantages of the cold forging method to reduce the cost. An object of the present invention is to provide a method for manufacturing a hose base that can be used.
【0007】[0007]
【課題を解決するための手段】本発明によるホース用口
金の製造方法は、細く長い孔を有するホース用口金の製
造方法であって、冷間鍛造法により、太く短い中実な原
素材に対し大径の貫通孔を形成することによって前記原
素材を竹輪形状へと変形させ、次に、前記竹輪形状に対
しその外径を絞ることにより細く長い孔を形成すること
を特徴とする。
SUMMARY OF THE INVENTION A method of manufacturing a hose base according to the present invention is a method of manufacturing a base for a hose having a thin and long hole. The method is characterized in that the raw material is deformed into a bamboo ring shape by forming a large diameter through-hole, and then a narrow and long hole is formed by narrowing the outer diameter of the bamboo ring shape.
【0008】ここで、前記原素材に前記大径の貫通孔を
形成する工程の途中において、前記原素材の両端から有
底孔であって径が前記大径の貫通孔と同一で深さが径の
3倍よりも小さい有底孔をそれぞれ形成する処理が行わ
れる。
In the course of the step of forming the large-diameter through hole in the raw material, both ends of the raw material are bottomed holes having the same diameter as the large-diameter through hole and a depth equal to the large-diameter through hole. A process for forming bottomed holes smaller than three times the diameter is performed.
【0009】また、本発明によるホース用口金は、細く
長い孔を有するホース用口金であって、前記細く長い孔
は、冷間鍛造法により、太く短い中実な原素材に対し大
径の貫通孔を形成することによって前記原素材を竹輪形
状へと変形させ、次に、前記竹輪形状に対しその外径を
絞ることによって形成されることを特徴とする。
The hose base according to the present invention is a hose base having a thin and long hole, and the narrow and long hole is formed by a cold forging method so as to have a large diameter through a thick and short solid raw material. The hole is formed to deform the raw material into a bamboo ring shape, and then formed by narrowing the outer diameter of the bamboo ring shape.
【0010】[0010]
【発明の実施の形態】以下、本発明の実施形態を図面に
基づいて説明する。
Embodiments of the present invention will be described below with reference to the drawings.
【0011】図1は、第1実施形態に係るホース用口金
の製造方法の要部の工程図、図2は、同製造方法により
最終的に製造されるホース用口金(狭義にはホース用口
金のニップル)の半断面図をそれぞれ示す。
FIG. 1 is a process diagram of a main part of a method of manufacturing a hose base according to a first embodiment, and FIG. 2 is a hose base manufactured finally by the manufacturing method (hose base in a narrow sense). Nipples) are respectively shown in a half sectional view.
【0012】第1実施形態に係るホース用口金の製造方
法の要部は、冷間鍛造法のみによって実施される。
The main part of the method of manufacturing the hose die according to the first embodiment is carried out only by the cold forging method.
【0013】まず、図1(a)に示すような太く短い中
実な原素材1(この原素材1は、コイル状態の材料を切
断して得ることができる。)に対しセンター加工を施し
て図1(b)に示すような中間成形品2を得る。
First, a center material is applied to a thick and short solid raw material 1 as shown in FIG. 1A (this raw material 1 can be obtained by cutting a material in a coil state). An intermediate molded product 2 as shown in FIG. 1 (b) is obtained.
【0014】次に、中間成形品2の両端へ太いパンチを
挿入して後方押出をすることにより、図1(c)に示す
ような大径の有底孔3、4を有する中間成形品5を形成
する。ここで、二つの有底孔3、4の寸法はそれぞれ例
えば径が8mm、深さが15mmであり、一般に冷間鍛
造法によって無理なく有底孔を明けることができる条件
とされている、有底孔の深さ≦3×有底孔の径、を満足
しているため、無理なく有底孔3、4を明けることがで
きる。
Next, by inserting a thick punch into both ends of the intermediate molded product 2 and extruding backward, an intermediate molded product 5 having large diameter bottomed holes 3 and 4 as shown in FIG. To form Here, the dimensions of the two bottomed holes 3 and 4 are, for example, a diameter of 8 mm and a depth of 15 mm, respectively, and are generally conditions under which the bottomed holes can be easily formed by cold forging. Since the depth of the bottom hole ≦ 3 × the diameter of the bottomed hole is satisfied, the bottomed holes 3 and 4 can be easily drilled.
【0015】次に、二つの有底孔3、4の連結箇所6を
パンチで打ち抜くことにより、図1(d)に示すよう
な、有底孔3、4が連通し大径の貫通孔7を有する竹輪
形状の竹輪形成品8をつくる。
Next, by punching out a connecting portion 6 between the two bottomed holes 3 and 4 with a punch, the bottomed holes 3 and 4 communicate with each other as shown in FIG. To form a bamboo ring-formed product 8 having the following shape.
【0016】次に、竹輪形成品8の一部(小径部9)の
外径を絞る縮管を行い、大径の貫通孔7の一部を図1
(e)に示すような細く長い孔10を有する中間成形品
11を得る。この細く長い孔10は、上記のような縮管
のみによっても形成可能であるが、縮管のみを行った場
合は、孔が加工硬化するため、径が細くなった孔を長く
延ばすためには、一旦別工程で焼鈍、ショット、ボンデ
等の処理が必要となる。そこで、このような別工程を不
要にするためには、上記のような縮管を行う際、貫通孔
7内に芯金(インナーピン)を入れ、貫通孔7の周面を
摩擦により引っ掛けて絞るようにすることが好ましく、
このような方法をとることで、別工程を設けることなく
太径の孔を細く長い孔10に変えることができる。
Next, a portion of the bamboo-ring-formed product 8 (small-diameter portion 9) is contracted to reduce the outer diameter, and a portion of the large-diameter through-hole 7 is removed as shown in FIG.
An intermediate molded article 11 having a narrow and long hole 10 as shown in FIG. The thin and long hole 10 can be formed only by the above-described constricted tube. However, when only the constricted tube is used, the hole is work-hardened. However, it is necessary to perform annealing, shot, bonding and the like in a separate process. In order to eliminate such a separate step, a core metal (inner pin) is inserted into the through-hole 7 and the peripheral surface of the through-hole 7 is hooked by friction when performing the above-described contraction. It is preferable to squeeze,
By adopting such a method, a large-diameter hole can be changed to a thin and long hole 10 without providing a separate step.
【0017】このように、第1実施形態に係るホース用
口金の製造方法によると、太く短い中実な原素材1から
細く長い孔10を有する中間成形品11までを冷間鍛造
法によって一貫生産することができる。このため、寸法
安定性、量産性等の点で優れている冷間鍛造法を十分に
活かし、コスト低減を図ることが可能になる。
As described above, according to the method of manufacturing the hose base according to the first embodiment, the continuous production from the thick and short solid raw material 1 to the intermediate molded product 11 having the long and thin holes 10 is carried out by cold forging. can do. Therefore, it is possible to make full use of the cold forging method, which is excellent in dimensional stability, mass productivity, and the like, and to reduce the cost.
【0018】その後、冷間鍛造法及びNC旋盤を用いて
鍔形状等を形成し、最終的に、図2に示すような細く長
い孔10を有するホース用口金のニップル12を製造す
る。
Thereafter, a flange shape and the like are formed by using a cold forging method and an NC lathe, and finally, a nipple 12 for a hose base having a thin and long hole 10 as shown in FIG. 2 is manufactured.
【0019】図3は、第2実施形態に係るホース用口金
の製造方法の要部の工程図を示す。
FIG. 3 shows a process chart of a main part of a method for manufacturing a hose base according to the second embodiment.
【0020】第2実施形態に係るホース用口金の製造方
法の要部は、第1実施形態と同様、冷間鍛造法のみによ
って実施される。
The main part of the method of manufacturing the hose die according to the second embodiment is carried out only by the cold forging method as in the first embodiment.
【0021】まず、図3(a)に示すような太く短い中
実な原素材21(この原素材21は、コイル状態の材料
を切断して得ることができ、寸法は、外径が例えば1
4.7mm、長さが例えば25mmである。)に対しセ
ンター加工を施した後、原素材21の両端へ太いパンチ
を挿入して後方押出をすることにより、図3(b)に示
すような大径の有底孔22、23を有する中間成形品2
4を形成する。ここで、二つの有底孔22、23の寸法
はそれぞれ例えばφ7×8であり、一般に冷間鍛造法に
よって無理なく有底孔を明けることができる条件とされ
ている、有底孔の深さ≦3×有底孔の径、を満足してい
るため、無理なく有底孔22、23を明けることができ
る。
First, as shown in FIG. 3 (a), a thick and short solid raw material 21 (this raw material 21 can be obtained by cutting a material in a coil state,
The length is 4.7 mm, for example, 25 mm. 3), a thick punch is inserted into both ends of the raw material 21 and extruded backward, thereby forming an intermediate portion having large-diameter bottomed holes 22 and 23 as shown in FIG. Molded product 2
4 is formed. Here, the size of each of the two bottomed holes 22 and 23 is, for example, φ7 × 8, and the depth of the bottomed hole is a condition under which the bottomed hole can be easily drilled by a cold forging method. Since ≦ 3 × the diameter of the bottomed holes is satisfied, the bottomed holes 22 and 23 can be easily drilled.
【0022】次に、二つの有底孔22、23の連結箇所
25をパンチで打ち抜くことにより、図3(c)に示す
ような、有底孔22、23が連通し大径の貫通孔26を
有する竹輪形状の竹輪形成品27をつくる。
Next, by punching out a connecting portion 25 between the two bottomed holes 22 and 23 with a punch, the bottomed holes 22 and 23 communicate with each other as shown in FIG. To form a bamboo ring-shaped article 27 having the following shape.
【0023】次に、竹輪形成品27の一部の外径を絞る
縮管を行い、大径の貫通孔26の一部を図3(d)に示
すような細い孔28を有する中間成形品29を得る。
Next, a part of the bamboo ring-formed product 27 is contracted to reduce the outer diameter, and a part of the large-diameter through hole 26 is formed into an intermediate molded product having a thin hole 28 as shown in FIG. Get 29.
【0024】次に、大径孔31側から細い孔28(小径
孔)にパンチピンを挿入した状態で、大径部31側には
大径孔32の径よりも大きな外径の円筒状パンチを挿入
することで大径部31に図3(e)に示すような凹部3
3を形成するとともに小径孔28を凹部33まで延設
し、また、小径部30側には小径孔28の径よりも大き
な内径を有しかつ小径部30の外径よりも小さな外径を
有する円筒状パンチを挿入して後方押出をすることで小
径部30に図3(e)に示すような細く長い孔34を有
するニップル部35とスリーブ部36とを同時に形成
し、図3(e)に示すような中間成形品37をつくる。
Next, with a punch pin inserted from the large-diameter hole 31 into the small hole 28 (small-diameter hole), a cylindrical punch having an outer diameter larger than the diameter of the large-diameter hole 32 is inserted into the large-diameter portion 31. By inserting, the concave portion 3 as shown in FIG.
3, the small-diameter hole 28 extends to the concave portion 33, and the small-diameter portion 30 has an inner diameter larger than the diameter of the small-diameter hole 28 and an outer diameter smaller than the outer diameter of the small-diameter portion 30. By inserting a cylindrical punch and extruding backward, a nipple portion 35 having a narrow and long hole 34 as shown in FIG. 3 (e) and a sleeve portion 36 are simultaneously formed in the small diameter portion 30, and FIG. 3 (e). An intermediate molded product 37 as shown in FIG.
【0025】このように、第2実施形態に係るホース用
口金の製造方法によっても、太く短い中実な原素材21
から細く長い孔34を有する中間成形品37までを冷間
鍛造法によって一貫生産することができる。このため、
寸法安定性、量産性等の点で優れている冷間鍛造法を十
分に活かし、コスト低減を図ることが可能になる。
As described above, the method for manufacturing the hose base according to the second embodiment also enables the thick and short solid raw material 21 to be used.
To an intermediate molded product 37 having a thin and long hole 34 can be integrally produced by a cold forging method. For this reason,
It is possible to make full use of the cold forging method, which is excellent in dimensional stability, mass productivity, and the like, to reduce costs.
【0026】その後、冷間鍛造法を用いて鍔形状等を形
成し、最終的に図3(f)に示すような細く長い孔34
を有するホース用口金38を製造する。
Thereafter, a flange shape or the like is formed by using a cold forging method, and finally, a thin and long hole 34 as shown in FIG.
Is manufactured.
【0027】図4(A)、(B)、(C)、(D)、
(E)は、本発明による製造方法を用いて製造可能なホ
ース用口金の部品を示し、図4(A)は、細く長い孔4
1を中央部42に有し、その両側にスリーブ部43、4
4が形成された部品、図4(B)は、細く長い孔51を
有する部分52とスリーブ部53とから構成される部
品、図4(C)は、細く長い孔61を有するニップル部
62の周囲にスリーブ部63が形成された部品、図4
(D)は、細く長い孔71とこの孔71に連通する凹部
72とを有する頭部73と、スリーブ部74とから構成
される部品、図4(E)は、細く長い孔81が頭部82
及びニップル部83に形成されかつニップル部83の周
囲にスリーブ部84を有する部品をそれぞれ示してい
る。
FIGS. 4 (A), (B), (C), (D),
(E) shows a part of a hose base which can be manufactured by using the manufacturing method according to the present invention, and FIG.
1 in a central portion 42, and sleeve portions 43, 4 on both sides thereof.
4 (B) is a part composed of a part 52 having a thin and long hole 51 and a sleeve part 53, and FIG. 4 (C) is a part of a nipple part 62 having a thin and long hole 61. FIG. 4 shows a part around which a sleeve 63 is formed.
(D) is a component comprising a head portion 73 having a thin and long hole 71 and a concave portion 72 communicating with the hole 71, and a sleeve portion 74. FIG. 82
And a component formed on the nipple portion 83 and having a sleeve portion 84 around the nipple portion 83.
【0028】[0028]
【発明の効果】本発明によると、太く短い中実な原素材
から細く長い孔を有する中間成形品までを冷間鍛造法に
よって一貫生産することができるため、寸法安定性、量
産性等の点で優れている冷間鍛造法を十分に活かし、コ
スト低減を図ることが可能になる。
According to the present invention, from a thick and short solid raw material to an intermediate molded product having a long and thin hole can be consistently produced by a cold forging method, the dimensional stability, mass productivity, etc. Thus, it is possible to make full use of the excellent cold forging method and reduce costs.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明の第1実施形態に係るホース用口金の製
造方法の要部の工程図である。
FIG. 1 is a process diagram of a main part of a method for manufacturing a hose base according to a first embodiment of the present invention.
【図2】同製造方法により最終的に製造されるホース用
口金のニップルの半断面図である。
FIG. 2 is a half sectional view of a nipple of a hose base manufactured finally by the same manufacturing method.
【図3】本発明の第2実施形態に係るホース用口金の製
造方法の要部の工程図である。
FIG. 3 is a process diagram of a main part of a method for manufacturing a hose base according to a second embodiment of the present invention.
【図4】本発明による製造方法を用いて製造可能なホー
ス用口金の部品の構成図である。
FIG. 4 is a structural view of a hose base part that can be manufactured by using the manufacturing method according to the present invention.
【符号の説明】[Explanation of symbols]
1、21 太く短い中実な原素材 7、26 大径の貫通孔 8、27 竹輪形成品 10、34 細く長い孔 3、4、22、23 有底孔 1,21 Thick short solid raw material 7,26 Large diameter through-hole 8,27 Bamboo ring formed product 10,34 Thin long hole 3,4,22,23 Bottom hole

Claims (3)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 細く長い孔を有するホース用口金の製造
    方法であって、 冷間鍛造法により、太く短い中実な原素材に対し大径の
    貫通孔を形成することによって前記原素材を竹輪形状へ
    と変形させ、次に、前記竹輪形状に対しその外径を絞る
    ことにより細く長い孔を形成することを特徴とするホー
    ス用口金の製造方法。
    1. A method of manufacturing a hose base having a narrow and long hole, comprising: forming a large diameter through hole in a thick and short solid raw material by a cold forging method; A method of manufacturing a mouthpiece for a hose, characterized in that the shape is changed into a shape, and then a narrow and long hole is formed by narrowing the outer diameter of the bamboo ring shape.
  2. 【請求項2】 前記原素材に前記大径の貫通孔を形成す
    る工程の途中において、前記原素材の両端から有底孔で
    あって径が前記大径の貫通孔と同一で深さが径の3倍よ
    りも小さい有底孔をそれぞれ形成する処理が行われるこ
    とを特徴とする請求項1記載のホース用口金の製造方
    法。
    2. In the middle of the step of forming the large-diameter through hole in the raw material, a bottomed hole having the same diameter as the large-diameter through hole and a depth equal to the large-diameter through hole is formed from both ends of the raw material. 2. The method according to claim 1, wherein a process for forming each of the bottomed holes smaller than three times of the above is performed.
  3. 【請求項3】 細く長い孔を有するホース用口金であっ
    て、前記細く長い孔は、冷間鍛造法により、太く短い中
    実な原素材に対し大径の貫通孔を形成することによって
    前記原素材を竹輪形状へと変形させ、次に、前記竹輪形
    状に対しその外径を絞ることによって形成されることを
    特徴とするホース用口金。
    3. A hose base having a narrow and long hole, wherein the narrow and long hole is formed by forming a large-diameter through hole in a thick and short solid raw material by a cold forging method. A hose base formed by deforming a material into a bamboo ring shape and then reducing the outer diameter of the bamboo ring shape.
JP2001169648A 2001-06-05 2001-06-05 Manufacturing method for mouth piece for hose Pending JP2002361359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001169648A JP2002361359A (en) 2001-06-05 2001-06-05 Manufacturing method for mouth piece for hose

Publications (1)

Publication Number Publication Date
JP2002361359A true JP2002361359A (en) 2002-12-17

Family

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Family Applications (1)

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Country Status (1)

Country Link
JP (1) JP2002361359A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0651657A (en) * 1992-07-28 1994-02-25 Canon Inc Heater and fixing device
KR100777244B1 (en) * 2006-09-07 2007-11-19 김봉한 Oil nozzle manufacturing method
JP2009012032A (en) * 2007-07-04 2009-01-22 Toyoda Gosei Co Ltd Method for manufacturing hose coupling metal fixture
CN103706745A (en) * 2012-10-03 2014-04-09 英钿工业股份有限公司 Method for manufacturing damping shaft sleeve
CN104493033A (en) * 2014-10-31 2015-04-08 西北有色金属研究院 Overall forming process of TC4 titanium alloy nozzle
JP2015147238A (en) * 2014-02-06 2015-08-20 イハラサイエンス株式会社 Method for manufacturing elbow material and elbow material manufactured by the method
TWI617374B (en) * 2017-06-14 2018-03-11 Lai Chuan Rong Long sleeve manufacturing method
CN109226616A (en) * 2017-07-11 2019-01-18 赖传荣 The manufacturing method of long sleeve

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0651657A (en) * 1992-07-28 1994-02-25 Canon Inc Heater and fixing device
KR100777244B1 (en) * 2006-09-07 2007-11-19 김봉한 Oil nozzle manufacturing method
JP2009012032A (en) * 2007-07-04 2009-01-22 Toyoda Gosei Co Ltd Method for manufacturing hose coupling metal fixture
US8042270B2 (en) 2007-07-04 2011-10-25 Toyoda Gosei Co., Ltd. Method of manufacturing hose coupling fitting
CN103706745A (en) * 2012-10-03 2014-04-09 英钿工业股份有限公司 Method for manufacturing damping shaft sleeve
JP2015147238A (en) * 2014-02-06 2015-08-20 イハラサイエンス株式会社 Method for manufacturing elbow material and elbow material manufactured by the method
CN104493033A (en) * 2014-10-31 2015-04-08 西北有色金属研究院 Overall forming process of TC4 titanium alloy nozzle
CN104493033B (en) * 2014-10-31 2016-08-17 西北有色金属研究院 A kind of integral forming technique of TC4 titanium alloy jet pipe
TWI617374B (en) * 2017-06-14 2018-03-11 Lai Chuan Rong Long sleeve manufacturing method
CN109226616A (en) * 2017-07-11 2019-01-18 赖传荣 The manufacturing method of long sleeve
CN109226616B (en) * 2017-07-11 2020-06-02 赖传荣 Method for manufacturing long sleeve

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