JP2006218527A - Method for manufacturing eye joint ferrule - Google Patents

Method for manufacturing eye joint ferrule Download PDF

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JP2006218527A
JP2006218527A JP2005036132A JP2005036132A JP2006218527A JP 2006218527 A JP2006218527 A JP 2006218527A JP 2005036132 A JP2005036132 A JP 2005036132A JP 2005036132 A JP2005036132 A JP 2005036132A JP 2006218527 A JP2006218527 A JP 2006218527A
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nipple
flange
joint
sleeve
manufacturing
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JP4577770B2 (en
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Tomohiro Matsumura
友博 松村
Susumu Ishii
進 石井
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Meiji Flow Systems Co Ltd
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Meiji Flow Systems Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly productive method for manufacturing an eye joint ferrule that can be firmly assembled. <P>SOLUTION: A sleeve body 20 is formed such that a hole 45 with a stepped part 49 on the inner face and a spherical part 48 are formed by cold-forging a bar-like material 40 in the axial direction, and also, a neck part 22 is formed by caulking or rolling a part adjacent to the spherical part. Next, the spherical part is formed into a disc-like part by pressing, and then, formed into an annular part 23 by boring. After that, a flange-like joining part of a separately-molded nipple body is fixed integrally with a nipple abutting face 25 of the sleeve body 20 by abutting it against the nipple abutting face 25. The nipple and the flange-like joining part are formed by cold-forging the bar-like material in the axial direction in the nipple body. Then, a protrusion is protruded at the end edge part of the flange-like joining part by pressing. The flange-like joining part and the nipple abutting face can be fixed integrally with each other by projection welding or friction welding. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、各種気体及び液体の可撓性供給管として自動車や産業機械等の配管に使用されるゴム又は合成樹脂製ホースの端部に取り付けられる継手金具に係り、詳しくは、アイジョイント口金具を安価に製造することができるアイジョイント口金具の製造方法に関するものである。   The present invention relates to a fitting fitting attached to the end of a rubber or synthetic resin hose used as a flexible supply pipe for various gases and liquids in automobiles, industrial machines and the like. It is related with the manufacturing method of the eye joint mouth metal fittings which can be manufactured cheaply.

従来、自動車に使用されるブレーキホース、パワーステアリングホース、オイルクーラーホース等あるいは各種産業機器に使用される圧力ホースには、先端にアイジョイント口金具が接続され、このアイジョント口金具を介して対象装置に取り付けられる。アイジョイント口金具は、円環部とホースを接続する管部とを一体に形成したものであって、前記円環部にアイボルトを挿通し、対象装置にアイボルトのネジ部を螺合することによって一体に接続されるが、螺合する際には前記円環部の上下面にパッキンを配設して流体漏れを防止している。   Conventionally, an eye joint fitting is connected to the tip of a brake hose, power steering hose, oil cooler hose, etc. used in automobiles, or a pressure hose used in various industrial equipment, and the target device is connected via this joint fitting. Attached to. The eye joint fitting is formed integrally with an annular part and a pipe part for connecting a hose. By inserting an eyebolt into the annular part and screwing a threaded part of the eyebolt into a target device. Although connected integrally, when screwing, packing is provided on the upper and lower surfaces of the annular portion to prevent fluid leakage.

アイジョイント口金具の製造方法としては、スリーブ本体とニップル本体とを分割して成型し、これらを突き合わせて一体に固着することによって製造する方法が知られている。例えば、アイジョイント口金具の製造方法の一例を示せば、特開２００５−７３９８号公報に記載されているように、スリーブ本体は、棒状素材の軸芯に対して直交する方向に冷間鍛造することによって首部とアイボルトを挿入する円環部とを成型及び穴明け加工した後、円環部とは反対側から軸芯方向に冷間鍛造することによってスリーブと首部内の流体通路とを同時に成型する。その後別途分割成型したフランジ状接合部を有するニップル本体を前記スリーブ本体に突き合わせて接合する。   As a method for manufacturing an eye joint fitting, a method is known in which a sleeve main body and a nipple main body are divided and molded, and these are abutted and fixed together. For example, if an example of a manufacturing method of an eye joint fitting is shown, as described in JP-A-2005-7398, the sleeve body is cold forged in a direction perpendicular to the axis of the rod-shaped material. After molding and drilling the neck and the annular part to insert the eyebolt, the sleeve and the fluid passage in the neck are simultaneously molded by cold forging in the axial direction from the opposite side of the annular part. To do. Thereafter, a nipple main body having a flange-shaped joint portion separately molded separately is abutted against the sleeve main body and joined.

また、分割成型したスリーブ本体とニップル本体とを突き合わせる他のホース継手金具の製造方法としては、特公平７−９２１７１号公報に記載されている。この製造方法は、前記スリーブ本体は、スリーブの形成と同時にニップル突当面に透孔よりも大きく、側面を傾斜面とした凹部を形成し、次いで、反対側にネジ形成部を形成し、その後、前記スリーブとネジ形成部の間に圧縮変形によってツバ部を形成し、ツバ部の外周面を六角形にトリミングした中間部品を冷間鍛造により成形し、さらに、ネジ形成部にネジを刻設するとともに透孔の穿設を行い、前記スリーブ本体にニップル本体のフランジ状接合部をプロジェクション溶接してなるものである。
特開２００５−７３９８号公報 特公平７−９２１７１号公報 Japanese Patent Publication No. 7-92171 discloses another method for manufacturing a hose joint fitting in which a sleeve body and a nipple body which are divided and formed are abutted with each other. In this manufacturing method, the sleeve body is formed with a concave portion having a side surface that is larger than the through-hole and an inclined surface on the nipple abutting surface simultaneously with the formation of the sleeve, and then a screw forming portion on the opposite side, A flange portion is formed by compression deformation between the sleeve and the screw forming portion, an intermediate part obtained by trimming the outer peripheral surface of the flange portion into a hexagon is formed by cold forging, and a screw is engraved in the screw forming portion. At the same time, a through hole is formed, and the flange-like joint portion of the nipple main body is projection welded to the sleeve main body.
JP 2005-7398 A Japanese Patent Publication No. 7-92171

しかしながら、上記ホース継手金具の製造方法は、いずれもプロジェクション溶接によってスリーブとニップルとを接合しているが、プロジェクション溶接用突起をスリーブ側のニップル突当面に設けている。このために、プロジェクション溶接用突起を所定の大きさ、高さに冷間鍛造により成型する、いわゆる形状出しが難しいという製法上の問題がある。また、プロジェクション溶接用突起が所定の形状、あるいは寸法通りに成型されているかどうかは、ニップルとの接合強度に影響するが、プロジェクション溶接用突起は、スリーブ内部に成型されることになるから、所定の寸法通りに成型されているかどうかを検査することが困難である。   However, in all of the above methods for manufacturing the hose fitting, the sleeve and the nipple are joined by projection welding, but the projection welding projection is provided on the nipple abutting surface on the sleeve side. For this reason, there is a problem in the manufacturing method that it is difficult to form a projection welding projection having a predetermined size and height by cold forging. Further, whether or not the projection welding projection is molded according to a predetermined shape or size affects the bonding strength with the nipple, but the projection welding projection is molded inside the sleeve. It is difficult to inspect whether it is molded according to the dimensions.

さらに、プロジェクション溶接用突起をスリーブ側に成型する場合には、ニップル突当面の外周縁部に成型することはできず、ある程度中心方向によって成型しなければならない。言い換えれば、ニップル突当面の幅寸法を大きくしなければならないから、スリーブ側の流体通路の直径を大きくすることができないという制約がある。一定幅のニップル突き当て面を確保し流体通路の直径を大きくすれば、それだけスリーブ全体を大きくしなければならない。   Further, when the projection welding projection is molded on the sleeve side, it cannot be molded on the outer peripheral edge portion of the nipple abutting surface, and it must be molded in the center direction to some extent. In other words, since the width dimension of the nipple abutting surface has to be increased, there is a restriction that the diameter of the fluid passage on the sleeve side cannot be increased. If the nipple abutting surface with a constant width is secured and the diameter of the fluid passage is increased, the entire sleeve must be increased accordingly.

この発明は、かかる現況に鑑みてなされたもので、スリーブ本体とニップル本体とを別途成型し、スリーブ本体を冷間鍛造により成型するとともに、プロジェクション溶接用突起をニップルのフランジ状接合部側に突設することによって、全体として生産コストが安く、安定した接合強度が得られ、しかもスリーブ側の流体通路の形状に設計上の自由度が得られるアイジョイント口金具の製造方法を提供することを目的とする。   The present invention has been made in view of the present situation. The sleeve main body and the nipple main body are separately formed, the sleeve main body is formed by cold forging, and the projection welding projection protrudes toward the flange-like joint portion side of the nipple. The purpose of the present invention is to provide a method of manufacturing an eye joint fitting that can be produced at a low cost as a whole, has a stable joint strength, and has a design freedom in the shape of the fluid passage on the sleeve side. And

この発明に係るアイジョイント口金具の製造方法は、分割して成型したスリーブ本体とニップル本体とを固着する製造方法であって、スリーブ本体の製造は、棒状素材を軸芯方向に冷間鍛造によって内面に段部を有する穴と球状部とを成型する工程と、前記球状部に隣接する部分を加締めあるいは転造によって首部を形成し、前記段部をニップル突当面とする工程と、球状部をプレス加工して円盤状部とする工程と、その後穴明け加工によって円盤状部を円環部とする工程とからなり、別途成型したニップル本体の溶接用突起を有するフランジ状接合部を前記スリーブ本体のニップル突当面に突き合わせて一体に固着する工程とからなることを特徴とする。
ニップル本体の製造は、棒状素材を軸芯方向に冷間鍛造することによって、ニップルとフランジ状接合部を形成する工程と、前記フランジ状接合部の端縁部にプレス加工によって突起を突設する工程とからなる。また、フランジ状接合部とニップル突き当て面とは、プロジェクション溶接または摩擦溶接によって一体に固着することができる。 A manufacturing method of an eye joint fitting according to the present invention is a manufacturing method of fixing a sleeve body and a nipple body that are divided and molded, and the sleeve body is manufactured by cold forging a rod-shaped material in the axial direction. Forming a hole having a stepped portion on the inner surface and a spherical portion, forming a neck portion by caulking or rolling a portion adjacent to the spherical portion, and forming the stepped portion as a nipple abutting surface; and a spherical portion A step of forming a disk-shaped portion by pressing and forming a circular portion of the disk-shaped portion by drilling. A step of abutting the nipple abutting surface of the main body and fixing them together.
The nipple main body is manufactured by cold forging a rod-shaped material in the axial direction to form a nipple and a flange-like joint, and projecting a protrusion on the edge of the flange-like joint by pressing. Process. Further, the flange-like joint portion and the nipple butting surface can be integrally fixed by projection welding or friction welding.

この発明のアイジョイント口金具の製造方法は、狭い幅寸法で足りるから、スリーブ本体内のニップル突当面を容易に形成することができる。また、スリーブ本体とニップル本体を固着するための突起は、ニップル本体のフランジ状接合部に突設したから、突起の成型が容易であり、突起の形状、大きさ等の検査も容易である。また、前記突起は所定の位置に所定の大きさで形成することができるから、スリーブ本体とニップル本体との固着強度にバラツキがなく、安定した固着強度を得ることができる。従って、アイジョイント口金具としての品質が安定する。   Since the method for manufacturing the eye joint fitting of the present invention requires a narrow width dimension, the nipple abutting surface in the sleeve body can be easily formed. In addition, since the protrusion for fixing the sleeve body and the nipple body protrudes from the flange-like joint portion of the nipple body, the protrusion can be easily molded, and the shape and size of the protrusion can be easily inspected. Further, since the protrusion can be formed at a predetermined position and with a predetermined size, there is no variation in the fixing strength between the sleeve main body and the nipple main body, and a stable fixing strength can be obtained. Therefore, the quality as an eye joint fitting is stabilized.

以下に、この発明を図示する実施形態について詳細に説明する。図１は、冷間鍛造により成型したアイジョイント口金具のスリーブ本体とニップル本体を示す一部断面側面図である。アイジョイント口金具１０は、別途成型されたスリーブ本体２０とニップル本体３０とをプロジェクション溶接または摩擦溶接により一体に結合してなる。   Embodiments illustrating the present invention will be described in detail below. FIG. 1 is a partially sectional side view showing a sleeve body and a nipple body of an eye joint mouthpiece molded by cold forging. The eye joint fitting 10 is formed by integrally joining a sleeve body 20 and a nipple body 30 that are separately molded by projection welding or friction welding.

スリーブ本体２０は、スリーブ２１の一端に設けた首部２２を介して円環部２３を形成してなる。前記首部２２には、スリーブ２１と円環部２３連通させる流体通路２４が形成されており、前記円環部２３にアイボルトを挿通し、対象装置にアイボルトのネジ部を螺合することによって一体に接続される。スリーブ２１の首部２２側内面には、ニップル突当面２５が形成されている。   The sleeve body 20 is formed with an annular portion 23 via a neck portion 22 provided at one end of the sleeve 21. A fluid passage 24 is formed in the neck portion 22 so as to communicate with the sleeve 21 and the annular portion 23, and an eyebolt is inserted into the annular portion 23, and a threaded portion of the eyebolt is screwed into the target device. Connected. A nipple abutting surface 25 is formed on the inner surface of the sleeve 21 on the neck 22 side.

一方、ニップル本体３０は、流体通路３４を有するニップル３１とフランジ状接合部３２とからなる。前記フランジ状接合部３２の外周縁近傍にプロジェクション溶接または摩擦溶接用突起（以下、単に溶接用突起という）３３が突設されている。アイジョイント口金具１０は、前記スリーブ本体２０のニップル突当面２５に前記フランジ状接合部３２に突設した溶接用突起３３を突き当て、プロジェクション溶接または摩擦溶接によって一体に結合する。   On the other hand, the nipple main body 30 includes a nipple 31 having a fluid passage 34 and a flange-like joint portion 32. A projection welding or friction welding projection (hereinafter simply referred to as a welding projection) 33 is provided in the vicinity of the outer peripheral edge of the flange-like joint portion 32. The eye joint fitting 10 abuts against a nipple abutting surface 25 of the sleeve body 20 with a welding projection 33 projecting from the flange-like joint portion 32, and is integrally coupled by projection welding or friction welding.

以下に、前記スリーブ本体２０を冷間鍛造により製造する方法について説明する。まず、図２に示すように、丸棒から切り取った素材４０を、筒状型４１と凹面型４２とからなる外型４３に入れ（図２（ａ））、先端が尖った中型４４で前記素材４０を押し込んで、内面に段部４９を有する穴４５を形成する。前記孔４５が、スリーブ２１と首部２２の流体通路２４とからなる。即ち、図２（ｂ）〜（ｄ）に示すように、筒状型４１に素材４０を入れ、先端面に突部４６を形成し、周面に段部４７を形成した中型４４を押圧すれば、後方押出によって段部４７によって形成された段部４９を有する穴４５が形成される。   Hereinafter, a method for manufacturing the sleeve body 20 by cold forging will be described. First, as shown in FIG. 2, a material 40 cut from a round bar is placed in an outer mold 43 composed of a cylindrical mold 41 and a concave mold 42 (FIG. 2 (a)), and the above-mentioned medium mold 44 with a sharp tip is used. The material 40 is pushed in to form a hole 45 having a stepped portion 49 on the inner surface. The hole 45 includes a sleeve 21 and a fluid passage 24 in the neck portion 22. That is, as shown in FIGS. 2B to 2D, the material 40 is put into the cylindrical mold 41, the protrusion 46 is formed on the front end surface, and the middle mold 44 having the stepped portion 47 formed on the peripheral surface is pressed. For example, a hole 45 having a stepped portion 49 formed by the stepped portion 47 is formed by backward extrusion.

このとき、穴４５の形成と同時に筒状型４１の先端部と凹面型４２によって球状部４８が形成された中間部品２０ａを得ることができる。前記段部４７によって形成される段部４９がニップル突当面２５となる。このようにして、鍛造加工によって中間部品２０ａを成型する。   At this time, it is possible to obtain the intermediate part 20a in which the spherical portion 48 is formed by the tip portion of the cylindrical die 41 and the concave die 42 simultaneously with the formation of the hole 45. A step portion 49 formed by the step portion 47 becomes the nipple abutting surface 25. In this way, the intermediate part 20a is formed by forging.

次に、図２（ｅ）〜（ｇ）に示すように、前記外型４３から中間部品２０ａを取り出して、加締め型５０の内側に球状部４８に隣接する部分をセットする。加締め型５０は、段部４９から球状部４８側の穴４５を加締めるように形成されている。中間部品２０ａの外周側に配設した加締め型５０を加締めると、スリーブ２１と球状部４８との間に首部２２が形成され、段部４９がニップル突当面２５として形成される。   Next, as shown in FIGS. 2E to 2G, the intermediate part 20 a is taken out from the outer mold 43, and a portion adjacent to the spherical portion 48 is set inside the crimping mold 50. The caulking die 50 is formed so as to caulk the hole 45 on the spherical portion 48 side from the step portion 49. When the caulking die 50 disposed on the outer peripheral side of the intermediate part 20 a is caulked, the neck portion 22 is formed between the sleeve 21 and the spherical portion 48, and the step portion 49 is formed as the nipple abutting surface 25.

前記実施形態では、加締め型５０で加締めることによって首部２２を形成したが、加締め型を絞り型に代え、中間部品２０ａを回転させながら前記絞り型を絞り込みながら首部２２を形成するようにしてもよい。   In the embodiment, the neck portion 22 is formed by caulking with the caulking die 50, but the caulking die is replaced with a drawing die, and the neck portion 22 is formed while narrowing the drawing die while rotating the intermediate part 20a. May be.

前記加締め型５０による加締めあるいは絞り型による絞り込みの際に、スリーブ２１及び首部２２の内径形状を保持するために、スリーブと首部の内径と同じ形状の芯金を挿入して加締めあるいは絞り込みを行ってもよい。このようにして、プレス加工あるいは転造加工などによって、スリーブ２１と首部２２が成型された中間部品２０ｂを得ることができる。   In order to maintain the inner diameter shape of the sleeve 21 and the neck portion 22 during the caulking by the caulking die 50 or the drawing by the drawing die, the core metal having the same shape as the inner diameter of the sleeve and the neck portion is inserted and caulked or narrowed down. May be performed. In this manner, the intermediate part 20b in which the sleeve 21 and the neck portion 22 are molded can be obtained by pressing or rolling.

次に、図２（ｈ）〜（ｊ）に示すように、円環部２３を成型する。円環部２３を成型するには、上型５１と下型５２とを突き合わせて球状部４８を円盤部４８ａとする。この円盤部４８ａをダイ５３の上に水平に載せてポンチ５４で打ち抜けばよい。ポンチ５４で打ち抜いた部分が、対象装置に接続するためにアイボルトを挿通する透孔となる。また、ポンチ５４での打ち抜きだけで流体通路２４が貫通しない場合には、従来と同様に切削加工によって流体通路２４を円環部２３内に貫通させればよい。   Next, as shown in FIGS. 2H to 2J, the annular portion 23 is molded. In order to mold the annular portion 23, the upper mold 51 and the lower mold 52 are brought into contact with each other to form the spherical portion 48 as a disk portion 48a. The disk portion 48a may be placed horizontally on the die 53 and punched by the punch 54. A portion punched by the punch 54 becomes a through hole through which an eyebolt is inserted in order to connect to the target device. In addition, when the fluid passage 24 does not penetrate only by punching with the punch 54, the fluid passage 24 may be penetrated into the annular portion 23 by cutting as in the prior art.

上述したように、スリーブ本体２０は、冷間鍛造の加工方法によって製造され、切削加工による部分がほとんどないから、ドリルによるバリカエリの発生を防止することができる。また、工程も簡単であるから、生産性がよく安価に製造することができる。   As described above, the sleeve main body 20 is manufactured by a cold forging processing method, and since there is almost no portion due to cutting, it is possible to prevent the occurrence of debris due to the drill. In addition, since the process is simple, the productivity is good and it can be manufactured at low cost.

一方、ニップル本体３０の製造方法の一例を図３に示す。図３は冷間鍛造による製造工程を示す。まず、丸棒から切り取った素材５５を、筒状型５６と凹型５７とからなる外型５８に入れ（図３（ａ））、中型６０で前記素材５５を押し込んで先端にフランジ状接合部６１を形成する（図３（ｂ））。次いで、前記中型６０を取り出して先端が尖った中型６３で押圧すれば、後方押出によって液体通路となる穴６４を有する筒部５９が形成される（図３（ｃ））。   On the other hand, an example of the manufacturing method of the nipple main body 30 is shown in FIG. FIG. 3 shows a manufacturing process by cold forging. First, the material 55 cut from the round bar is put into an outer die 58 composed of a cylindrical die 56 and a concave die 57 (FIG. 3 (a)), and the material 55 is pushed in with a middle die 60, and a flange-like joint 61 at the tip. (FIG. 3B). Next, when the middle die 60 is taken out and pressed by the middle die 63 having a sharp tip, a cylindrical portion 59 having a hole 64 serving as a liquid passage is formed by backward extrusion (FIG. 3C).

次いで、前記凹型５７を取り外して、内側に凹部６５を形成し、中心部に前記中型６３が挿通可能な貫通孔６６を設けたダイ型６７を装着する。その後、中型６３を突き出せば、中型６３がポンチとして機能し、穴６４が貫通する（図３（ｄ））。貫通した穴６４は、そのまま液体通路３４となる。さらに、前記ダイ型６７と中型６３を取り外し、突き合わせ面に凹部７０を設けた押型７１をフランジ状接合部６１に突き当てる。押型７１を突き当てると、凹部７０によってフランジ状接合部６１に溶接用突起３３が形成される。   Subsequently, the concave mold 57 is removed, a concave mold 65 is formed inside, and a die mold 67 provided with a through hole 66 through which the middle mold 63 can be inserted at the center is mounted. Thereafter, when the middle die 63 is protruded, the middle die 63 functions as a punch, and the hole 64 penetrates (FIG. 3D). The through hole 64 becomes the liquid passage 34 as it is. Furthermore, the die die 67 and the middle die 63 are removed, and a pressing die 71 having a concave portion 70 on the abutting surface is abutted against the flange-like joint portion 61. When the pressing die 71 is abutted, the welding projection 33 is formed on the flange-like joint 61 by the recess 70.

上記のように、溶接用突起３３をフランジ状接合部６１に突設する場合には、フランジ状接合部６１の外周端縁ぎりぎりに近づけて突設することができる。溶接用突起３３をフランジ状接合部６１の外周端縁ぎりぎりに突設することによって、スリーブ本体２０におけるニップル突当面２５の幅寸法も小さくすることができるから、図１で説明したように、首部２２を加締め加工あるいは転造加工によって成形することができる。   As described above, when the welding projections 33 are projected from the flange-shaped joint 61, the welding projections 33 can be projected near the outer edge of the flange-shaped joint 61. By projecting the welding projection 33 at the edge of the outer peripheral edge of the flange-shaped joint portion 61, the width dimension of the nipple abutting surface 25 in the sleeve body 20 can also be reduced. As described with reference to FIG. 22 can be formed by caulking or rolling.

即ち、首部２２を加締め加工あるいは転造加工によって成形する場合には、スリーブ２１の内径と首部２２の内径との接続部分（スリーブの底部）の内面は、傾斜面となり穴明け加工のように直角に形成することができないから、ニップル突当面２５の幅寸法を大きくとることはできない。ニップル突当面２５の幅寸法を大きくとるためには、スリーブ２１の内径と首部２２の内径との接続部分（スリーブの底部）の肉厚を厚くしなければならないとともに、首部２２の外径を所定の寸法まで小さくすることができない。   That is, when the neck portion 22 is formed by caulking or rolling, the inner surface of the connection portion (the bottom portion of the sleeve) between the inner diameter of the sleeve 21 and the inner diameter of the neck portion 22 becomes an inclined surface as in drilling. Since it cannot be formed at a right angle, the width dimension of the nipple abutting surface 25 cannot be increased. In order to increase the width of the nipple abutting surface 25, the thickness of the connecting portion (the bottom of the sleeve) between the inner diameter of the sleeve 21 and the inner diameter of the neck portion 22 must be increased, and the outer diameter of the neck portion 22 is set to a predetermined value. It cannot be reduced to the size of.

これらの問題は、溶接用突起３３をフランジ状接合部３２の外周端縁ぎりぎりに突設することによって解決することができる。また、溶接用突起３３をフランジ状接合部３２側に突設することによって、突起が設計通りの大きさ、形状に形成されているかどうか容易に検査することができる。   These problems can be solved by projecting the welding projection 33 at the edge of the outer peripheral edge of the flange-like joint portion 32. Further, by providing the welding projection 33 on the flange-like joint portion 32 side, it is possible to easily inspect whether the projection is formed in the designed size and shape.

スリーブ本体２０とニップル本体３０を成型した後は、スリーブ本体２０のニップル突当面２５にフランジ状接合部を突き合わせて、公知のプロジェクション溶接または摩擦溶接によって一体に固着すればよい。   After the sleeve main body 20 and the nipple main body 30 are molded, the flange-like joint portion may be abutted against the nipple abutting surface 25 of the sleeve main body 20 and fixed together by known projection welding or friction welding.

スリーブ本体とニップル本体とを組み立てたアイジョイント口金具の一部断面側面図である。It is a partial cross section side view of the eye joint mouthpiece which assembled the sleeve main body and the nipple main body. 冷間鍛造によるスリーブ本体を成型する工程を示す説明図である。It is explanatory drawing which shows the process of shape | molding the sleeve main body by cold forging. 冷間鍛造によるニップル本体を成型する工程を示す説明図である。It is explanatory drawing which shows the process of shape | molding the nipple main body by cold forging.

符号の説明Explanation of symbols

１０：アイジョイント口金具
２０：スリーブ本体
２０ａ：中間部品
２１：スリーブ
２２：首部
２３：円環部
２４：流体通路
２５：ニップル突当面
３０：ニップル本体
３１：ニップル
３２：フランジ状接合部
３３：溶接用突起
３４：流体通路
４０：素材
４１：筒状型
４２：凹面型
４３：外型
４４：中型
４５：凹部
４６：突部
４７：段部
４８：球状部
５０：加締め型
５１：上型
５２：下型
５３：ダイ
５４：ポンチ
５５：素材
５６：筒状型
５７：凹型
５８：外型
６０：中型
６１：フランジ状接合部
６３：中型
６４：穴
６５：凹部
６６：貫通孔
６７：ダイ型
７０：凹部
７１：押型 10: Eye joint fitting 20: Sleeve body 20a: Intermediate part
21: Sleeve 22: Neck
23: Ring part
24: Fluid passage
25: Nipple abutting surface 30: Nipple body 31: Nipple 32: Flange joint 33: Welding protrusion 34: Fluid passage 40: Material
41: cylindrical mold 42: concave surface type
43: Outer mold 44: Medium mold
45: Recess
46: Projection 47: Step
48: spherical part 50: caulking die
51: Upper mold
52: Lower mold
53: Die
54: Punch
55: Material
56: Cylindrical mold 57: Concave type
58: Outer mold 60: Medium mold
61: Flange joint
63: Medium size
64: hole
65: Recess
66: Through hole
67: Die type
70: Recess 71: Stamping die

Claims (4)

分割して成型したスリーブ本体とニップル本体とを固着する製造方法であって、スリーブ本体の製造は、棒状素材を軸芯方向に冷間鍛造によって内面に段部を有する穴と球状部とを成型する工程と、前記球状部に隣接する部分を加締めあるいは転造によって首部を形成し、前記段部をニップル突当面とする工程と、球状部をプレス加工して円盤状部とする工程と、その後穴明け加工によって円盤状部を円環部とする工程とからなり、別途成型したニップル本体の溶接用突起を有するフランジ状接合部を前記スリーブ本体のニップル突き当て面に突き合わせて一体に固着する工程とからなることを特徴とするアイジョイント口金具の製造方法。   A manufacturing method for fixing a sleeve body and a nipple body which are divided and molded, and the sleeve body is manufactured by forming a hole and a spherical portion having a stepped portion on the inner surface by cold forging a rod-shaped material in the axial direction. Forming a neck portion by caulking or rolling the portion adjacent to the spherical portion, and forming the stepped portion as a nipple abutting surface; pressing the spherical portion into a disk-shaped portion; After that, the process comprises the step of making the disk-shaped part into an annular part by drilling, and a flange-shaped joint part having a welding protrusion of the nipple body formed separately is abutted against the nipple abutting surface of the sleeve body and fixed integrally. The manufacturing method of the eye joint mouth metal fitting characterized by consisting of a process. ニップル本体の製造は、棒状素材を軸芯方向に冷間鍛造することによって、ニップルとフランジ状接合部を形成する工程と、前記フランジ状接合部の端縁部にプレス加工によって突起を突設する工程とからなることを特徴とする請求項１に記載のアイジョイント口金具の製造方法。   The nipple main body is manufactured by cold forging a rod-shaped material in the axial direction to form a nipple and a flange-like joint, and projecting protrusions on the edge of the flange-like joint by pressing. The method of manufacturing an eye joint fitting according to claim 1, comprising: a step. ニップル本体のフランジ状接合部とニップル突き当て面とをプロジェクション溶接によって一体に固着してなることを特徴とする請求項１又は２に記載のアイジョイント口金具の製造方法。   The method of manufacturing an eye joint fitting according to claim 1 or 2, wherein the flange-shaped joint portion of the nipple main body and the nipple butting surface are integrally fixed by projection welding. ニップル本体のフランジ状接合部とニップル突き当て面とを摩擦溶接によって一体に固着してなることを特徴とする請求項１又は２に記載のアイジョイント口金具の製造方法   3. The method of manufacturing an eye joint fitting according to claim 1, wherein the flange-like joint portion of the nipple main body and the nipple butting surface are integrally fixed by friction welding.
JP2005036132A 2005-02-14 2005-02-14 Manufacturing method for eye joint fittings Expired - Fee Related JP4577770B2 (en)

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Publication number Priority date Publication date Assignee Title
JP2010221241A (en) * 2009-03-23 2010-10-07 Toyoda Gosei Co Ltd Method of producing hose metal fitting
KR101076374B1 (en) 2009-03-12 2011-10-25 태화정밀공업(주) Nipple for hose joint and how to make it
CN103522025A (en) * 2013-10-21 2014-01-22 如皋市同泰电力器材有限公司 Supporting single lug and production process thereof

Families Citing this family (1)

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CN109202380A (en) * 2018-09-30 2019-01-15 江苏天毅冷镦股份有限公司 The whole cold upsetting production technique of automobile-used ball joint

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Publication number Priority date Publication date Assignee Title
KR101076374B1 (en) 2009-03-12 2011-10-25 태화정밀공업(주) Nipple for hose joint and how to make it
JP2010221241A (en) * 2009-03-23 2010-10-07 Toyoda Gosei Co Ltd Method of producing hose metal fitting
CN103522025A (en) * 2013-10-21 2014-01-22 如皋市同泰电力器材有限公司 Supporting single lug and production process thereof
CN103522025B (en) * 2013-10-21 2015-11-18 如皋市同泰电力器材有限公司 A kind of production technology of supporting single lug

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