JP2003025041A - Method and die for manufacturing ball chain member - Google Patents
Method and die for manufacturing ball chain memberInfo
- Publication number
- JP2003025041A JP2003025041A JP2001215212A JP2001215212A JP2003025041A JP 2003025041 A JP2003025041 A JP 2003025041A JP 2001215212 A JP2001215212 A JP 2001215212A JP 2001215212 A JP2001215212 A JP 2001215212A JP 2003025041 A JP2003025041 A JP 2003025041A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- groove
- ball
- pair
- grooves
- 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
Links
Landscapes
- Forging (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、金属製の中空ボ
ールを連結軸でつないだボールチェーンの製造方法と製
造用金型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a ball chain in which hollow metal balls are connected by a connecting shaft and a manufacturing die.
【０００２】[0002]
【従来の技術】ボールチェーンは、図５に示すように、
両端に連結頭部９を有した連結軸８により、中空のボー
ル１４を繋いでチェーンを形成していた。このボール１
４の製造は、図７に示すような金型２を用いて行ってい
る。この金型２は上下に同型の金型からなり、図６に示
すような板材１０を円筒状に形成したボール形成部材１
２を、一対の金型２で上下から挟んで、ボール１個分の
ピッチずつ図面矢印方向にボール形成部材１２を移動さ
せて、徐々に円筒状の金属筒を個々の球状に成形するも
のである。そして、金型２の図面右端側では円筒状のボ
ール形成部材１２が、左端側では球状のボール１４にな
って図５に示すように、１個ずつ切り離されて送り出さ
れる。ここで、中の連結軸８は、図５，図６に示すよう
に、あらかじめ連結頭部９が形成された状態でボール形
成部材１２中に挿通されている。2. Description of the Related Art A ball chain, as shown in FIG.
The connecting balls 8 having the connecting heads 9 at both ends connect the hollow balls 14 to form a chain. This ball 1
4 is manufactured using a mold 2 as shown in FIG. The mold 2 is composed of the same molds on the upper and lower sides, and a ball forming member 1 in which a plate material 10 as shown in FIG. 6 is formed in a cylindrical shape.
2 is sandwiched between a pair of molds 2 from above and below, and the ball forming member 12 is moved in the direction of the arrow in the drawing at a pitch of one ball to gradually form a cylindrical metal cylinder into individual spherical shapes. is there. Then, the cylindrical ball forming member 12 on the right end side of the mold 2 in the drawing becomes a spherical ball 14 on the left end side, and as shown in FIG. Here, as shown in FIGS. 5 and 6, the connecting shaft 8 therein is inserted into the ball forming member 12 with the connecting head 9 formed in advance.
【０００３】このボール１４を形成する金型２や連結軸
８を形成する金型の製造は、先ず、硬い金属により形成
されボール１４や連結軸８の形状をした雄型であるマス
タ型を用いてホビングにより形成する。このマスタ型
は、図７の金型２を形成するものの場合、円筒状の金属
筒から徐々に球を作るために、球を作るための食い込み
を徐々に深くし、先端部は球状とし、連結軸８の太さで
つながっている棒状の硬い金属部材である。従って、金
型２の形状は、ボール１４を形成するための食い込み部
４とボール形状を徐々に形成するほぼ球状の凹部６とを
備える。また、連結軸８のマスタ型も、同様に徐々に膨
大部が大きくなった硬い金属棒からなる。これらのマス
タ型を用いて、ホビング用の相対的に柔らかい金型鋼の
表面にマスタ型を押し付けて雌型の金型２や、連結軸８
を造形する雌型を形成している。また、金型２は、放電
加工や型彫りフライス加工によっても形成していた。In order to manufacture the mold 2 for forming the ball 14 and the mold for forming the connecting shaft 8, first, a master mold, which is made of hard metal and has the shape of the ball 14 and the connecting shaft 8, is used. Forming by hobbing. In the case of forming the mold 2 of FIG. 7, this master mold gradually forms a sphere from a cylindrical metal cylinder, so that the bite for forming the sphere is gradually deepened, and the tip portion is formed into a spherical shape, It is a rod-shaped hard metal member connected by the thickness of the shaft 8. Therefore, the shape of the mold 2 is provided with the biting portion 4 for forming the ball 14 and the substantially spherical concave portion 6 for gradually forming the ball shape. Further, the master type of the connecting shaft 8 is also made of a hard metal rod whose swelling portion is gradually increased. Using these master molds, the master mold is pressed against the surface of a relatively soft mold steel for hobbing, and the female mold 2 and the connecting shaft 8
To form a female mold. The mold 2 was also formed by electric discharge machining or die-cutting milling.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、ホビン
グにより雌型を形成する場合、マスタ型よりも柔らかい
金属でなければならず、雌型である金型２等には硬い金
属を用いることができなかった。従って、金型寿命が短
く、加工コストの削減の妨げともなっていた。また、放
電加工による型彫りは、球状または連結軸８の形状に相
当した精密な電極を必要とし、フライスによる型彫りで
は、微細なボールエンドミルにより複雑なプログラムを
用いたＮＣ制御による加工が必要であった。However, when forming the female mold by hobbing, the metal must be softer than that of the master mold, and a hard metal cannot be used for the female mold 2 and the like. It was Therefore, the life of the mold is short, which also hinders the reduction of processing cost. Further, the die-sinking by electric discharge machining requires a precise electrode corresponding to the shape of the spherical or the connecting shaft 8, and the die-sinking by milling requires machining by NC control using a complicated program with a fine ball end mill. there were.
【０００５】この発明は、上記従来の技術の問題点に鑑
みてなされたもので、相対的な金型寿命が長く、容易に
正確且つ高品質にボールチェーンの製造が可能なボール
チェーン製造方法と製造用金型を提供することを目的と
する。The present invention has been made in view of the above-mentioned problems of the prior art, and a ball chain manufacturing method which has a long relative die life and enables a ball chain to be easily manufactured accurately and with high quality. It is intended to provide a manufacturing die.
【０００６】[0006]
【課題を解決するための手段】この発明は、一対の金型
を有し、この各金型は、表面の一方向に延びて断面が２
次元形状の湾曲状やＶ字状等に形成され互いに接した一
対の溝が複数列互いに平行に所定間隔で設けられ、上記
一対の溝間の隔壁は、上記溝方向と直交する方向に上記
金型の一方の端部から他方の端部にかけて徐々に溝底部
からの突出高さが高くなるように形成され、この溝方向
と直交する方向に各溝間を繋ぐように形成され上記各溝
よりも浅い軸挿通部が設けられ、上記一対の金型を互い
に対向させて配置し、上記金型をボールチェーンの軸部
材を挟んで両側に設け、上記軸部材を所定角度長軸回り
に間欠的に回転させながら連結頭部の３次元曲面を形成
するボールチェーンの製造方法である。The present invention has a pair of molds, each mold extending in one direction on the surface and having a cross section of 2
A pair of grooves, which are formed in a dimensional curved shape or a V-shape and are in contact with each other, are provided in a plurality of rows in parallel with each other at a predetermined interval, and a partition wall between the pair of grooves is formed in the direction perpendicular to the groove direction. It is formed so that the protruding height from the groove bottom gradually increases from one end of the mold to the other end, and it is formed so as to connect between the grooves in a direction orthogonal to this groove direction. Is also provided with a shallow shaft insertion portion, the pair of molds are arranged to face each other, the molds are provided on both sides of the ball chain shaft member, and the shaft member is intermittently provided around a predetermined angle long axis. It is a method of manufacturing a ball chain in which a three-dimensional curved surface of a connecting head is formed while rotating the ball chain.
【０００７】またこの発明は、一対の金型を有し、この
各金型は、表面の一方向に延びて断面が２次元形状の湾
曲状等に形成され互いに接した一対の溝が複数列互いに
平行に所定間隔で設けられ、上記一対の溝間の隔壁は、
上記溝方向と直交する方向に上記金型の一方の端部から
他方の端部にかけて徐々に溝底部からの突出高さが高く
なるように形成され、この溝方向と直交する方向に各溝
間を繋ぐように形成され上記各溝よりも浅い軸挿通部が
設けられたボールチェーンの製造用金型である。上記軸
挿通部は、上記金型の一端部から他端部にかけて、各々
互いに平行に複数列形成されている。Further, the present invention has a pair of molds, and each mold has a plurality of rows of a pair of grooves that extend in one direction on the surface and have a two-dimensionally curved cross section and are in contact with each other. The partition walls provided in parallel with each other at a predetermined interval, between the pair of grooves,
It is formed such that the protruding height from the groove bottom gradually increases from one end of the mold to the other end in the direction orthogonal to the groove direction. Is a mold for manufacturing a ball chain having a shaft insertion portion that is formed so as to connect to each other and that is shallower than the above grooves. The shaft insertion portions are formed in a plurality of rows parallel to each other from one end to the other end of the mold.
【０００８】またこの発明は、一対の金型を有し、この
各金型は、表面の一方向に延びて断面が２次元形状の湾
曲状に形成された複数の溝を連続的に備え、この各溝は
溝方向と直交する方向に上記金型の一方の端部から他方
の端部にかけて徐々に溝形状が深くなるように形成さ
れ、この溝方向と直交する方向に各溝間壁部を切除した
切除部が形成され、上記一対の金型を互いに対向させて
配置し、円筒状のボール形成部材を挟んで上記各金型を
両側に設け、上記ボール形成部材を所定角度長軸回りに
間欠的に回転させながらボールを形成するボールチェー
ンの製造方法である。Further, the present invention has a pair of molds, and each mold continuously comprises a plurality of grooves extending in one direction of the surface and having a curved two-dimensional cross section. Each groove is formed such that the groove shape gradually becomes deeper from one end of the mold to the other end in a direction orthogonal to the groove direction, and each groove inter-wall portion is formed in a direction orthogonal to the groove direction. A pair of molds are arranged so as to face each other, and the molds are provided on both sides with a cylindrical ball-forming member sandwiched therebetween, and the ball-forming member is rotated about a major axis at a predetermined angle. It is a method of manufacturing a ball chain in which a ball is formed while being intermittently rotated.
【０００９】またこの発明は、一対の金型を有し、この
各金型は、表面の一方向に延びて断面が２次元形状の湾
曲状に形成された複数の溝を連続的に備え、この各溝は
溝方向と直交する方向に上記金型の一方の端部から他方
の端部にかけて徐々に溝形状が深くなるように形成さ
れ、この溝方向と直交する方向に各溝間壁部を切除した
切除部が形成されたボールチェーンの製造用金型であ
る。上記切除部は、互いに平行に複数列形成されてい
る。Further, the present invention has a pair of molds, each of which is continuously provided with a plurality of grooves extending in one direction on the surface and having a curved two-dimensional cross section. Each groove is formed such that the groove shape gradually becomes deeper from one end of the mold to the other end in a direction orthogonal to the groove direction, and each groove inter-wall portion is formed in a direction orthogonal to the groove direction. It is a metal mold for manufacturing a ball chain in which a cutout part is formed by cutting out. A plurality of the cutout portions are formed in parallel with each other.
【００１０】この発明のボールチェーン製造方法と装置
は、２次元形状の湾曲面である溝に、柱状の軸部材やボ
ール形成部材を押圧して、周囲よりも膨大化した連結頭
部や、球状のボールを徐々に形成するものである。The ball chain manufacturing method and apparatus of the present invention presses a columnar shaft member or a ball forming member into a groove that is a curved surface of a two-dimensional shape, and has a connection head or a spherical shape that is larger than the surrounding area. The ball is gradually formed.
【００１１】[0011]
【発明の実施の形態】以下、この発明の実施の形態につ
いて、図面に基づいて説明する。この実施形態のボール
チェーンは従来のボールチェーンと同様のものであり、
図５に示すように、両端に連結頭部９を有した連結軸８
により、中空の球状のボール１４を繋いでチェーンを形
成している。ボール１４には、互いに対向する位置に一
対の軸挿通孔１５が形成され、連結軸８が挿通してい
る。軸挿通孔１５は連結軸８の径よりもわずかに大きく
連結頭部９よりも小さい径に形成されている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The ball chain of this embodiment is similar to the conventional ball chain,
As shown in FIG. 5, a connecting shaft 8 having connecting heads 9 at both ends.
Thus, the hollow spherical balls 14 are connected to form a chain. A pair of shaft insertion holes 15 are formed in the ball 14 at positions facing each other, and the connection shaft 8 is inserted therethrough. The shaft insertion hole 15 is formed to have a diameter slightly larger than the diameter of the connecting shaft 8 and smaller than the connecting head 9.
【００１２】このボールチェーンの製造は、先ず連結軸
８を互いに繋がった状態で製造し、図６に示すように、
細長い板材１０を円筒状に形成したボール形成部材１２
を、一対の金型で上下から挟んで、ボール１４の１個分
のピッチずつ図面矢印方向にボール形成部材１２を移動
させて、徐々に円筒状の金属筒を個々の球状に成形す
る。In the manufacture of this ball chain, first, the connecting shafts 8 are connected to each other, and as shown in FIG.
Ball forming member 12 in which elongated plate member 10 is formed in a cylindrical shape
Is sandwiched between a pair of molds from above and below, and the ball forming member 12 is moved in the direction of the arrow in the drawing at a pitch of one ball 14, to gradually form a cylindrical metal cylinder into each spherical shape.
【００１３】連結軸８の製造は、図１および図２の概略
図に示すような一対の金型２０を用いる。金型２０は、
各々対称に形成され、この各金型２０は、互いに対向す
る表面の一方向に延びて断面が略半円筒状また略Ｖ字状
に形成された複数の溝２２を、所定間隔で備える。溝２
２は、互いに接した一対の溝２２が複数列互いに平行に
形成され、一対の溝２２間の隔壁２４は、溝２２の方向
と直交する方向に金型２０の一方の端部２０ａから他方
の端部２０ｂにかけて徐々に溝底部からの突出高さが高
くなるように形成されている。隔壁２４の頂部間の間隔
ｗは、連結軸８の連結頭部９間の間隔を定める。さら
に、金型２０には、溝２２の方向と直交する方向に各溝
２２間を繋ぐように直線状に設けられた軸挿通部２６が
形成されている。軸挿通部２６は、連結軸８よりもわず
かに太い凹溝状に形成され、金型２０の一方の端部２０
ａから他方の端部２０ｂにかけて徐々に細くなってい
る。溝２２の底部には、図１に示すように、逃げ溝２２
ａが形成され、加工屑等の収容部となっている。The connecting shaft 8 is manufactured by using a pair of molds 20 as shown in the schematic views of FIGS. The mold 20 is
The respective dies 20 are formed symmetrically, and each of the dies 20 is provided with a plurality of grooves 22 that extend in one direction on the surfaces facing each other and are formed in a semi-cylindrical or V-shaped cross section at predetermined intervals. Groove 2
2, the pair of grooves 22 contacting each other are formed in parallel with each other in a plurality of rows, and the partition wall 24 between the pair of grooves 22 extends from one end 20a of the mold 20 to the other in a direction orthogonal to the direction of the grooves 22. The protrusion height from the groove bottom is gradually increased toward the end 20b. The distance w between the tops of the partition walls 24 determines the distance between the connecting heads 9 of the connecting shaft 8. Further, the mold 20 is provided with a shaft insertion portion 26 that is linearly provided so as to connect the grooves 22 in a direction orthogonal to the direction of the grooves 22. The shaft insertion portion 26 is formed in a groove shape slightly thicker than the connecting shaft 8, and is provided at one end 20 of the mold 20.
It gradually becomes thinner from a to the other end 20b. At the bottom of the groove 22, as shown in FIG.
a is formed and serves as a storage portion for processing scraps and the like.
【００１４】この連結軸８の製造方法は、一対の金型２
０を互いに対向させて配置し、金型２０の軸挿通部２６
に沿って、連結軸８を形成する棒状の軸部材を金型２０
の入り口側の端部２０ａに配置し、軸部材を所定角度例
えば４５°ずつ長軸回りに回転させながら、間欠的にピ
ッチｗずつ軸挿通部２６に沿って端部２０ｂ側に移動さ
せる。すると、棒状の軸部材は、図１の仮想線で示すよ
うに、端部２０ａ側では隔壁２４の頂部によりわずかに
連結頭部９を形成するように塑性変形され、さらに回転
しながらｗずつ進行することにより、図１の端部２０ｂ
に至るまでには３次元的な形状の連結頭部９の形状に成
形される。The manufacturing method of the connecting shaft 8 is as follows.
0 are arranged to face each other, and the shaft insertion portion 26 of the mold 20 is placed.
The rod-shaped shaft member forming the connecting shaft 8 along the mold 20
Is disposed at the end portion 20a on the inlet side of the shaft, and the shaft member is intermittently moved along the shaft insertion portion 26 toward the end portion 20b side by the pitch w while rotating the shaft member about the long axis by a predetermined angle, for example, 45 °. Then, as shown by the phantom line in FIG. 1, the rod-shaped shaft member is plastically deformed so as to slightly form the connecting head 9 by the top of the partition wall 24 on the side of the end 20a, and further advances by w while rotating. By doing so, the end portion 20b of FIG.
By the way, the three-dimensional shape of the connecting head 9 is formed.
【００１５】ここで、隔壁２４は、図２に示すように直
線状の刃形状であり、溝２２も直線的な２次元形状の溝
であるが、連結軸８を形成する軸部材の長軸回りに回動
させながら多数回の鍛造により塑性変形するものであ
り、回動角度も軸部材のねじれ等により正確ではなく事
実上側面を満遍なく押圧し塑性変形させることとなり、
連結頭部９の断面形状は綺麗な円形となる。Here, the partition wall 24 has a linear blade shape as shown in FIG. 2, and the groove 22 is also a linear two-dimensional groove, but the long axis of the shaft member forming the connecting shaft 8 It is plastically deformed by many forgings while rotating around, and the rotation angle is not accurate due to the twist of the shaft member, etc., and the side surface is pressed evenly and plastically deformed.
The cross-sectional shape of the connecting head 9 becomes a neat circle.
【００１６】このようにして形成された連結軸８は、連
結頭部９同士が繋がった状態で１本の軸状に形成され、
次のボール形成工程に送られる。The connecting shaft 8 thus formed is formed into a single shaft with the connecting heads 9 connected to each other.
It is sent to the next ball forming step.
【００１７】ボール形成工程では図６に示すように、ま
ず図示しない機械により、板材１０を円筒状に形成して
ボール形成部材１２を設けつつ、繋がった状態の連結軸
８をボール形成部材１２に挿通させる。そして、連結軸
８とともにボール形成部材１２をボール形成用の金型３
０の間に送る。In the ball forming step, as shown in FIG. 6, the plate material 10 is first formed into a cylindrical shape by a machine (not shown) to provide the ball forming member 12, and the connected connecting shaft 8 is connected to the ball forming member 12. Insert it. Then, the ball forming member 12 together with the connecting shaft 8 is used for the ball forming die 3
Send while 0.
【００１８】金型３０は図３に示すような表面を有し
て、この表面同士が互いに対面して一対設けられてい
る。この各金型３０は、表面の一方向に延びて断面が略
楕円から半円状に湾曲して形成された複数の溝３２を連
続的に備えている。この各溝３０は、溝方向と直交する
方向に、金型３０の一方の端部から他方の端部にかけて
徐々に溝形状が深くなり半円に近づくように形成され、
この溝方向と直交する方向に各溝間壁部３４を切除した
切除部３６が形成されている。切除部３６直線状に金型
３０の一端部から他端部にかけて形成され、同様に複数
列設けられている。The mold 30 has a surface as shown in FIG. 3, and a pair of surfaces are provided facing each other. Each of the molds 30 is continuously provided with a plurality of grooves 32 extending in one direction on the surface and having a cross section curved from a substantially elliptical shape to a semicircular shape. Each groove 30 is formed in a direction orthogonal to the groove direction such that the groove shape gradually becomes deeper from one end of the mold 30 to the other end, and approaches a semicircle.
A cut portion 36 is formed by cutting each groove inter-wall portion 34 in a direction orthogonal to the groove direction. The cut portion 36 is linearly formed from one end to the other end of the mold 30, and is similarly provided in a plurality of rows.
【００１９】ボール１４の製造方法は、一対の金型３０
を互いに対向させて配置し、金型３０の切除部３６に沿
って、連結軸８及びボール形成部材１２を金型３０の入
り口側の端部に配置し、ボール形成部材１２を所定角度
例えば４５°ずつ長軸回りに回転させながら、間欠的に
ピッチｗずつ切除部３６に沿って他方の端部に間欠送り
する。すると、筒状のボール形成部材１２は、図６に示
すように、入り口側端部では溝間壁部３４の頂部により
わずかにくびれを形成するように塑性変形され、さらに
回転しながらｗずつ進行することにより、図６右端部に
至るまでには３次元的な形状のボール１４に成形され
る。この後、ボール１４は個々のボールに分割され、連
結軸８も個々に分離される。The ball 14 is manufactured by a pair of molds 30.
Are arranged to face each other, the connecting shaft 8 and the ball forming member 12 are arranged at the inlet side end of the mold 30 along the cutout portion 36 of the mold 30, and the ball forming member 12 is set at a predetermined angle, for example, 45. While rotating about the major axis by °, intermittently feed by pitch w along the cutout portion 36 to the other end. Then, as shown in FIG. 6, the cylindrical ball-forming member 12 is plastically deformed so as to form a slight constriction at the entrance-side end portion by the apex of the inter-groove wall portion 34, and further advances by w while rotating. By doing so, the ball 14 having a three-dimensional shape is formed by the time it reaches the right end portion in FIG. After this, the balls 14 are divided into individual balls, and the connecting shafts 8 are also individually separated.
【００２０】ここで、溝間壁部３４は、図３に示すよう
に直線状の刃形状であり、溝３２も直線的な２次元形状
の溝であるが、ボール形成部材１２を長軸回りに回動さ
せながら多数回の鍛造により球状に塑性変形するもので
あり、回動角度もねじれ等により正確ではなく事実上ボ
ール形成部材１２の側面を満遍なく押圧し塑性変形させ
ることとなり、ボール１４は綺麗な３次元形状の球形と
なる。Here, the inter-groove wall portion 34 has a linear blade shape as shown in FIG. 3, and the groove 32 is also a linear two-dimensional groove. The ball 14 is plastically deformed into a spherical shape by forging a large number of times while being rotated, and the rotation angle is not accurate due to twisting or the like, and the side surface of the ball forming member 12 is virtually evenly pressed and plastically deformed. It becomes a beautiful three-dimensional spherical shape.
【００２１】ここで、金型２０は極めて硬い超硬合金で
形成することが好ましく、溝２２は焼き入れ硬化後若し
くは焼結硬化後の状態で素材硬さに関係なく、切削加
工、研削加工またはワイヤカット放電加工等により、２
次元的、直線的な工具の移動で簡単に形成することがで
きる。これに対して軸挿通部２６は、隔壁２４を切除し
ないようにして形成しなければならないので、この隔壁
２４部分で逃げを有した工具を用いて放電可能により形
成する。この加工には、例えば図４に示すような工具４
０を用いる。この工具４０、放電加工刃４２を備え、こ
の放電加工刃４２にはピッチｗで逃げ４４が形成されて
いる。この工具４０により隔壁２４に逃げ４４を合わせ
てワイヤ放電加工することにより、軸挿通部２６が正確
且つ容易に形成される。また、金型３０の切除部３６
は、機械加工でも放電加工でも良く、直線的に移動する
工具により容易に形成可能である。Here, it is preferable that the die 20 is formed of an extremely hard cemented carbide, and the groove 22 is in a state after quenching hardening or sinter hardening regardless of material hardness, cutting, grinding, or 2 by wire cut electrical discharge machining
It can be easily formed by dimensional and linear movement of the tool. On the other hand, since the shaft insertion portion 26 must be formed so as not to cut the partition wall 24, the shaft insertion portion 26 is formed by discharge using a tool having a clearance at the partition wall 24 portion. For this processing, for example, a tool 4 as shown in FIG.
0 is used. The tool 40 and the electric discharge machining blade 42 are provided, and the electric discharge machining blade 42 is formed with a clearance 44 at a pitch w. By aligning the clearance 44 with the partition wall 24 by this tool 40 and performing wire electric discharge machining, the shaft insertion portion 26 is accurately and easily formed. In addition, the cutting portion 36 of the mold 30
Can be machined or electric discharge machined and can be easily formed by a tool that moves linearly.
【００２２】この実施形態のボールチェーン製造用金型
は、一つの金型２０，３０に、加工用の溝２２，３２が
直線的に設けられ、加工に用いる軸挿通部２６や切除部
３６の列を複数形成することより、一つの金型２０，３
０で順次場所を変えて塑性加工を行うことができ、金型
の寿命をその列の数だけ延ばすことができる。さらに、
溝２２，３２を従来のように、ホビング加工や型彫り放
電加工、型彫りフライス加工により形成するものではな
く、２次元的な機械加工により形成可能であり、金型２
０，３０の金属材料を超硬合金等の極めて硬いものを用
いることができる。これによっても金型寿命を延ばすこ
とができる。In the ball chain manufacturing die of this embodiment, the grooves 22 and 32 for machining are linearly provided in one die 20 and 30, and the shaft insertion portion 26 and the cutting portion 36 used for machining are formed. By forming a plurality of rows, one mold 20,3
It is possible to sequentially change the position at 0 and perform plastic working, and extend the life of the mold by the number of rows. further,
The grooves 22 and 32 are not formed by hobbing, die-sinking electric discharge machining, or die-milling as in the prior art, but can be formed by two-dimensional machining.
An extremely hard material such as a cemented carbide can be used as the metal material of 0 and 30. This can also extend the life of the mold.
【００２３】[0023]
【発明の効果】この発明のボールチェーン製造方法と製
造用金型装置によれば、金型製造を容易にし、金型の製
造コストを削減することができる。さらに金型素材を高
硬度、高級化することができるため、金型寿命を延ばす
こともでき、ボールチェーンの製造コストを大幅に削減
することができる。According to the ball chain manufacturing method and the manufacturing die apparatus of the present invention, the die manufacturing can be facilitated and the die manufacturing cost can be reduced. Furthermore, since the hardness and quality of the mold material can be increased, the life of the mold can be extended and the manufacturing cost of the ball chain can be significantly reduced.
【００２４】また、従来は、上下一組の金型は、１個の
成型部しか設けられなかったが、この発明では、１個の
金型に複数の成型部を設けることができる。さらに、寿
命に達した金型を、再修正加工を施して金型全体を数回
にわたって再利用することも比較的容易に可能である。Further, conventionally, a pair of upper and lower molds was provided with only one molding section, but in the present invention, one mold can be provided with a plurality of molding sections. Further, it is possible to relatively easily reuse the entire die by re-correcting the die that has reached the end of its life.
【００２５】さらに、１個の金型の取り付けによって数
個分の成型部を使用することができるため、金型の取り
付け取り外し、調整等の段取りコストが大幅に削減さ
れ、且つ稼働率も向上する。また、成型部の形状が直線
的で単純であるため、成型時に生じる加工屑等の破片や
ゴミの除去に際して、一方の端部からオイルジェットや
エアジェットにより簡単に除去可能であり、高品質のボ
ールチェーンの製造を可能とする。Furthermore, since several molding parts can be used by mounting one mold, the setup costs for mounting and dismounting the mold, adjustment, etc. are greatly reduced and the operating rate is also improved. . In addition, since the shape of the molding part is linear and simple, when removing debris such as processing chips and dust generated during molding, it can be easily removed from one end with an oil jet or an air jet, and high quality Enables the manufacture of ball chains.
【図１】この発明の一実施形態のボールチェーン製造用
金型を示す縦断面図である。FIG. 1 is a vertical cross-sectional view showing a mold for manufacturing a ball chain according to an embodiment of the present invention.
【図２】この発明の一実施形態のボールチェーン製造用
金型を示す概略部分破断斜視図である。FIG. 2 is a schematic partially cutaway perspective view showing a ball chain manufacturing die according to an embodiment of the present invention.
【図３】この発明の一実施形態の他のボールチェーン製
造用金型を示す概略部分破断斜視図である。FIG. 3 is a schematic partially broken perspective view showing another ball chain manufacturing die according to the embodiment of the present invention.
【図４】この発明の一実施形態の金型の製造工具を示す
斜視図である。FIG. 4 is a perspective view showing a mold manufacturing tool according to an embodiment of the present invention.
【図５】製造途中のボールチェーンを示す部分破断正面
図である。FIG. 5 is a partially cutaway front view showing the ball chain during manufacturing.
【図６】製造途中のボールチェーンを示す部分破断斜視
図である。FIG. 6 is a partially cutaway perspective view showing the ball chain during manufacturing.
【図７】従来のボールチェーン製造用金型を示す斜視図
である。FIG. 7 is a perspective view showing a conventional ball chain manufacturing die.
８ 連結軸 ９ 連結頭部 １０ 板材 １２ ボール形成部材 １４ ボール ２０，３０ 金型 ２２，３２ 溝 ２４ 隔壁 ２６ 軸挿通部 ３４ 溝間壁部 ３６ 切除部 8 connecting shafts 9 Connected head 10 plate materials 12 Ball forming member 14 balls 20,30 mold 22, 32 groove 24 partitions 26 Shaft insertion part 34 Groove wall 36 excision part
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１４年４月８日（２００２．４．８）[Submission date] April 8, 2002 (2002.4.8)
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【書類名】 明細書[Document name] Statement
【発明の名称】 ボールチェーン部材の製造方法と製造
用金型Title: Method for manufacturing ball chain member and manufacturing die
【特許請求の範囲】[Claims]
【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】この発明は、金属製の中空ボ
ールを連結軸でつないだボールチェーンの連結軸及びボ
ールである各ボールチェーン部材の製造方法と製造用金
型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting shaft and a ball of a ball chain in which hollow metal balls are connected by a connecting shaft.
The present invention relates to a method for manufacturing each ball chain member that is a tool and a manufacturing die.
【０００２】[0002]
【従来の技術】ボールチェーンは、図５に示すように、
両端に連結頭部９を有した連結軸８により、中空のボー
ル１４を繋いでチェーンを形成していた。このボール１
４の製造は、図７に示すような金型２を用いて行ってい
る。この金型２は上下に同型の金型からなり、図６に示
すような板材１０を円筒状に形成したボール形成部材１
２を、一対の金型２で上下から挟んで、ボール１個分の
ピッチずつ図面矢印方向にボール形成部材１２を移動さ
せて、徐々に円筒状の金属筒を個々の球状に成形するも
のである。そして、金型２の図面右端側では円筒状のボ
ール形成部材１２が、左端側に達すると球状のボール１
４になって図５に示すように、１個ずつ切り離されて送
り出される。ここで、中の連結軸８は、図５，図６に示
すように、あらかじめ連結頭部９が形成された状態でボ
ール形成部材１２中に挿通されている。2. Description of the Related Art A ball chain, as shown in FIG.
The connecting balls 8 having the connecting heads 9 at both ends connect the hollow balls 14 to form a chain. This ball 1
4 is manufactured using a mold 2 as shown in FIG. The mold 2 is composed of the same molds on the upper and lower sides, and a ball forming member 1 in which a plate material 10 as shown in FIG. 6 is formed in a cylindrical shape.
2 is sandwiched between a pair of molds 2 from above and below, and the ball forming member 12 is moved in the direction of the arrow in the drawing at a pitch of one ball to gradually form a cylindrical metal cylinder into individual spherical shapes. is there. Then, the cylindrical ball forming member 12 on the right end side of the mold 2 in the drawing , and the spherical ball 1 when reaching the left end side.
4, and as shown in FIG. 5, they are separated one by one and sent out. Here, as shown in FIGS. 5 and 6, the connecting shaft 8 therein is inserted into the ball forming member 12 with the connecting head 9 formed in advance.
【０００３】このボール１４を形成する金型２や連結軸
８を形成する金型の製造は、先ず、硬い金属により形成
されボール１４や連結軸８の形状をした雄型であるマス
タ型を用いてホビングにより形成する。このマスタ型
は、図７の金型２を形成するものの場合、円筒状の金属
筒から徐々に球を作るために、球を作るための食い込み
を徐々に深くし、先端部は球状とし、連結軸８の太さで
つながっている棒状の硬い金属部材である。従って、金
型２の形状は、ボール１４を形成するための食い込み部
４とボール形状を徐々に形成するほぼ球状の凹部６とを
備える。また、連結軸８のマスタ型も、同様に徐々に膨
大部が大きくなった硬い金属棒からなる。これらのマス
タ型を用いて、ホビング用の相対的に柔らかい金型鋼の
表面にマスタ型を押し付けて雌型の金型２や、連結軸８
を造形する雌型を形成している。また、金型２は、放電
加工や型彫りフライス加工によっても形成していた。In order to manufacture the mold 2 for forming the ball 14 and the mold for forming the connecting shaft 8, first, a master mold, which is made of hard metal and has the shape of the ball 14 and the connecting shaft 8, is used. Forming by hobbing. In the case of forming the mold 2 of FIG. 7, this master mold gradually forms a sphere from a cylindrical metal cylinder, so that the bite for forming the sphere is gradually deepened, and the tip portion is formed into a spherical shape, It is a rod-shaped hard metal member connected by the thickness of the shaft 8. Therefore, the shape of the mold 2 is provided with the biting portion 4 for forming the ball 14 and the substantially spherical concave portion 6 for gradually forming the ball shape. Further, the master type of the connecting shaft 8 is also made of a hard metal rod whose swelling portion is gradually increased. Using these master molds, the master mold is pressed against the surface of a relatively soft mold steel for hobbing, and the female mold 2 and the connecting shaft 8
To form a female mold. The mold 2 was also formed by electric discharge machining or die-cutting milling.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、ホビン
グにより雌型を形成する場合、マスタ型よりも柔らかい
金属でなければならず、雌型である金型２等には硬い金
属を用いることができなかった。従って、金型寿命が短
く、加工コストの削減の妨げともなっていた。また、放
電加工による型彫りは、球状または連結軸８の形状に相
当した精密な電極を必要とし、フライスによる型彫りで
は、微細なボールエンドミルにより複雑なプログラムを
用いたＮＣ制御による加工が必要であった。However, when forming the female mold by hobbing, the metal must be softer than that of the master mold, and a hard metal cannot be used for the female mold 2 and the like. It was Therefore, the life of the mold is short, which also hinders the reduction of processing cost. Further, the die-sinking by electric discharge machining requires a precise electrode corresponding to the shape of the spherical or the connecting shaft 8, and the die-sinking by milling requires machining by NC control using a complicated program with a fine ball end mill. there were.
【０００５】この発明は、上記従来の技術の問題点に鑑
みてなされたもので、相対的な金型寿命が長く、容易に
正確且つ高品質にボールチェーンの製造が可能なボール
チェーン部材の製造方法と製造用金型を提供することを
目的とする。The present invention has been made in view of the above-mentioned problems of the prior art, and has a long relative die life, and is capable of easily and accurately manufacturing a ball chain member with high quality. It is an object to provide a method and a mold for manufacturing.
【０００６】[0006]
【課題を解決するための手段】この発明は、一対の金型
を有し、この各金型は、表面の一方向に延びて断面形状
が一定の湾曲状やＶ字状等に形成され互いに接した一対
の溝が複数列互いに平行に所定間隔で設けられ、上記一
対の溝間の隔壁は、上記金型の表面に沿って上記溝方向
と直交する方向に上記金型の一方の端部から他方の端部
にかけて徐々に溝底部からの突出高さが高くなるように
形成され、上記金型の表面に沿ってこの溝方向と直交す
る方向に各溝間を繋ぐように形成され上記各溝よりも浅
い軸挿通部が設けられ、上記一対の金型を互いに対向さ
せて配置し、上記金型をボールチェーンの軸部材を挟ん
で両側に設け、上記軸部材を所定角度長軸回りに間欠的
に回転させながら連結頭部の３次元曲面を形成するボー
ルチェーンの製造方法である。The present invention has a pair of molds, each mold extending in one direction on the surface and having a sectional shape.
Are formed in a constant curved shape or V-shape, and a pair of grooves in contact with each other are provided in a plurality of rows in parallel with each other at a predetermined interval, and the partition wall between the pair of grooves is the groove along the surface of the mold. Is formed so that the protruding height from the groove bottom gradually increases from one end of the mold to the other end in a direction orthogonal to the direction, and is orthogonal to the groove direction along the surface of the mold. Is formed so as to connect between the grooves in the direction in which the grooves are formed, and a shaft insertion portion that is shallower than the grooves is provided, the pair of molds are arranged to face each other, and the molds are sandwiched between the shaft members of the ball chain. A method for manufacturing a ball chain, which is provided on both sides and forms a three-dimensional curved surface of a connecting head while intermittently rotating the shaft member around a major axis by a predetermined angle.
【０００７】またこの発明は、一対の金型を有し、この
各金型は、表面の一方向に延びて断面形状が一定の湾曲
面に形成され互いに接した一対の溝が複数列互いに平行
に所定間隔で設けられ、上記一対の溝間の隔壁は、上記
金型の表面に沿って上記溝方向と直交する方向に上記金
型の一方の端部から他方の端部にかけて徐々に溝底部か
らの突出高さが高くなるように形成され、上記金型の表
面に沿ってこの溝方向と直交する方向に各溝間を繋ぐよ
うに形成され上記各溝よりも浅い軸挿通部が設けられた
ボールチェーンの製造用金型である。上記軸挿通部は、
上記金型の一端部から他端部にかけて、各々互いに平行
に複数列形成されている。Further, the present invention has a pair of molds, and each mold extends in one direction on the surface and has a constant cross-section.
A pair of grooves contact with each other are formed on the surface is provided with a plurality of rows parallel to each other at a predetermined distance, the partition wall between the pair of grooves, the
It is formed along the surface of the mold in a direction orthogonal to the groove direction so that the protruding height from the groove bottom gradually increases from one end of the mold to the other end . table
A mold for manufacturing a ball chain, which is formed so as to connect between the grooves in a direction orthogonal to the groove direction along a surface and is provided with a shaft insertion portion shallower than the grooves. The shaft insertion part is
A plurality of rows are formed in parallel with each other from one end to the other end of the mold.
【０００８】またこの発明は、一対の金型を有し、この
各金型は、表面の一方向に延びて断面形状が一定の湾曲
面に形成された複数の溝を連続的に備え、この各溝は上
記金型の表面に沿って上記溝方向と直交する方向に上記
金型の一方の端部から他方の端部にかけて徐々に溝形状
が深くなるように形成され、上記金型の表面に沿ってこ
の溝方向と直交する方向に各溝間壁部を切除した切除部
が形成され、上記一対の金型を互いに対向させて配置
し、円筒状のボール形成部材を挟んで上記各金型を両側
に設け、上記ボール形成部材を所定角度長軸回りに間欠
的に回転させながらボールを形成するボールチェーンの
製造方法である。Further, the present invention has a pair of molds, and each mold extends in one direction on the surface and has a constant cross-sectional shape.
Above comprises a plurality of grooves formed in the surface continuously, the each groove
Along the surface of the metal mold, the groove shape is formed so as to gradually become deeper from one end of the mold to the other end in a direction orthogonal to the groove direction, and along the surface of the mold. A cut portion is formed by cutting the inter-groove wall portion in a direction orthogonal to the groove direction, the pair of molds are arranged so as to face each other, and the cylindrical ball forming member is sandwiched between the molds. This is a method of manufacturing a ball chain in which each die is provided on both sides, and a ball is formed by intermittently rotating the ball forming member around a major axis by a predetermined angle.
【０００９】またこの発明は、一対の金型を有し、この
各金型は、表面の一方向に延びて断面が２次元形状の湾
曲状に形成された複数の溝を連続的に備え、この各溝は
溝方向と直交する方向に上記金型の一方の端部から他方
の端部にかけて徐々に溝形状が深くなるように形成さ
れ、この溝方向と直交する方向に各溝間壁部を切除した
切除部が形成されたボールチェーンの製造用金型であ
る。上記切除部は、互いに平行に複数列形成されてい
る。Further, the present invention has a pair of molds, each of which is continuously provided with a plurality of grooves extending in one direction on the surface and having a curved two-dimensional cross section. Each groove is formed such that the groove shape gradually becomes deeper from one end of the mold to the other end in a direction orthogonal to the groove direction, and each groove inter-wall portion is formed in a direction orthogonal to the groove direction. It is a metal mold for manufacturing a ball chain in which a cutout part is formed by cutting out. A plurality of the cutout portions are formed in parallel with each other.
【００１０】この発明のボールチェーン部材の製造方法
と装置は、断面形状が一定の湾曲面である溝の一部に溝
方向と直角方向に、柱状の軸部材やボール形成部材を配
置して押圧し部材長手方向に送りながら、周囲よりも膨
大化した連結頭部や、球状のボールを徐々に形成するも
のである。The method and apparatus for manufacturing a ball chain member according to the present invention is characterized in that a groove having a curved surface with a constant cross-section is formed in a part of the groove.
In a direction perpendicular to the direction, distribution columnar axis member or a ball member
While being placed and pressed and fed in the longitudinal direction of the member , a connecting head that is larger than the surroundings and a spherical ball are gradually formed.
【００１１】[0011]
【発明の実施の形態】以下、この発明の実施の形態につ
いて、図面に基づいて説明する。この実施形態のボール
チェーンは従来のボールチェーンと同様のものであり、
図５に示すように、両端に連結頭部９を有した連結軸８
により、中空の球状のボール１４を繋いでチェーンを形
成している。ボール１４には、互いに対向する位置に一
対の軸挿通孔１５が形成され、連結軸８が挿通してい
る。軸挿通孔１５は連結軸８の径よりもわずかに大きく
連結頭部９よりも小さい径に形成されている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The ball chain of this embodiment is similar to the conventional ball chain,
As shown in FIG. 5, a connecting shaft 8 having connecting heads 9 at both ends.
Thus, the hollow spherical balls 14 are connected to form a chain. A pair of shaft insertion holes 15 are formed in the ball 14 at positions facing each other, and the connection shaft 8 is inserted therethrough. The shaft insertion hole 15 is formed to have a diameter slightly larger than the diameter of the connecting shaft 8 and smaller than the connecting head 9.
【００１２】このボールチェーンの製造は、先ず連結軸
８を互いに繋がった状態で製造し、図６に示すように、
細長い板材１０を円筒状に形成したボール形成部材１２
を、一対の金型で上下から挟んで、ボール１４の１個分
のピッチずつ図面矢印方向にボール形成部材１２を移動
させて、徐々に円筒状の金属筒を個々の球状に成形す
る。In the manufacture of this ball chain, first, the connecting shafts 8 are connected to each other, and as shown in FIG.
Ball forming member 12 in which elongated plate member 10 is formed in a cylindrical shape
Is sandwiched between a pair of molds from above and below, and the ball forming member 12 is moved in the direction of the arrow in the drawing at a pitch of one ball 14, to gradually form a cylindrical metal cylinder into each spherical shape.
【００１３】連結軸８の製造は、図１および図２の概略
図に示すような一対の金型２０を用いる。金型２０は、
各々対称に形成され、この各金型２０は、互いに対向す
る表面の一方向に延びて断面が略半円筒状また略Ｖ字状
に形成された複数の溝２２を、所定間隔で備える。溝２
２は、互いに接した一対の溝２２が複数列互いに平行に
形成され、一対の溝２２間の隔壁２４は、溝２２の方向
と直交する方向に金型２０の一方の端部２０ａから他方
の端部２０ｂにかけて徐々に溝底部からの突出高さが高
くなるように形成されている。隔壁２４の頂部間の間隔
ｗは、連結軸８の連結頭部９間の間隔を定める。さら
に、金型２０には、溝２２の方向と直交する方向に各溝
２２間を繋ぐように直線状に設けられた軸挿通部２６が
形成されている。軸挿通部２６は、連結軸８よりもわず
かに太い凹溝状に形成され、金型２０の一方の端部２０
ａから他方の端部２０ｂにかけて徐々に細くなってい
る。溝２２の底部には、図１に示すように、逃げ溝２２
ａが形成され、加工屑等の収容部となっている。The connecting shaft 8 is manufactured by using a pair of molds 20 as shown in the schematic views of FIGS. The mold 20 is
The respective dies 20 are formed symmetrically, and each of the dies 20 is provided with a plurality of grooves 22 that extend in one direction on the surfaces facing each other and are formed in a semi-cylindrical or V-shaped cross section at predetermined intervals. Groove 2
2, the pair of grooves 22 contacting each other are formed in parallel with each other in a plurality of rows, and the partition wall 24 between the pair of grooves 22 extends from one end 20a of the mold 20 to the other in a direction orthogonal to the direction of the grooves 22. The protrusion height from the groove bottom is gradually increased toward the end 20b. The distance w between the tops of the partition walls 24 determines the distance between the connecting heads 9 of the connecting shaft 8. Further, the mold 20 is provided with a shaft insertion portion 26 that is linearly provided so as to connect the grooves 22 in a direction orthogonal to the direction of the grooves 22. The shaft insertion portion 26 is formed in a groove shape slightly thicker than the connecting shaft 8, and is provided at one end 20 of the mold 20.
It gradually becomes thinner from a to the other end 20b. At the bottom of the groove 22, as shown in FIG.
a is formed and serves as a storage portion for processing scraps and the like.
【００１４】この連結軸８の製造方法は、一対の金型２
０を互いに対向させて配置し、金型２０の軸挿通部２６
に沿って、連結軸８を形成する棒状の軸部材を金型２０
の入り口側の端部２０ａに配置し、軸部材を所定角度例
えば４５°ずつ長軸回りに回転させながら、間欠的にピ
ッチｗずつ軸挿通部２６に沿って端部２０ｂ側に移動さ
せる。すると、棒状の軸部材は、図１の仮想線で示すよ
うに、端部２０ａ側では隔壁２４の頂部によりわずかに
連結頭部９を形成するように塑性変形され、さらに回転
しながらｗずつ進行することにより、図１の端部２０ｂ
に至るまでには３次元的な形状の連結頭部９の形状に成
形される。The manufacturing method of the connecting shaft 8 is as follows.
0 are arranged to face each other, and the shaft insertion portion 26 of the mold 20 is placed.
The rod-shaped shaft member forming the connecting shaft 8 along the mold 20
Is disposed at the end portion 20a on the inlet side of the shaft, and the shaft member is intermittently moved along the shaft insertion portion 26 toward the end portion 20b side by the pitch w while rotating the shaft member about the long axis by a predetermined angle, for example, 45 °. Then, as shown by the phantom line in FIG. 1, the rod-shaped shaft member is plastically deformed so as to slightly form the connecting head 9 by the top of the partition wall 24 on the side of the end 20a, and further advances by w while rotating. By doing so, the end portion 20b of FIG.
By the way, the three-dimensional shape of the connecting head 9 is formed.
【００１５】ここで、隔壁２４は、図２に示すように直
線状の刃形状であり、溝２２も直線的な溝であるが、連
結軸８を形成する軸部材の長軸回りに回動させながら多
数回の鍛造により塑性変形するものであり、回動角度も
軸部材のねじれ等により正確ではなく事実上側面を満遍
なく押圧し塑性変形させることとなり、連結頭部９の断
面形状は綺麗な円形となる。Here, the partition wall 24 has a linear blade shape as shown in FIG. 2, and the groove 22 is also a linear groove , but is rotated around the major axis of the shaft member forming the connecting shaft 8. However, the rotation angle is not accurate due to the twist of the shaft member, etc., and the side surface is pressed uniformly and plastically deformed, and the cross-sectional shape of the connecting head 9 is neat. It becomes circular.
【００１６】このようにして形成された連結軸８は、連
結頭部９同士が繋がった状態で１本の軸状に形成され、
次のボール形成工程に送られる。The connecting shaft 8 thus formed is formed into a single shaft with the connecting heads 9 connected to each other.
It is sent to the next ball forming step.
【００１７】ボール形成工程では図６に示すように、ま
ず図示しない機械により、板材１０を円筒状に形成して
ボール形成部材１２を設けつつ、繋がった状態の連結軸
８をボール形成部材１２に挿通させる。そして、連結軸
８とともにボール形成部材１２をボール形成用の金型３
０の間に送る。In the ball forming step, as shown in FIG. 6, the plate material 10 is first formed into a cylindrical shape by a machine (not shown) to provide the ball forming member 12, and the connected connecting shaft 8 is connected to the ball forming member 12. Insert it. Then, the ball forming member 12 together with the connecting shaft 8 is used for the ball forming die 3
Send while 0.
【００１８】金型３０は図３に示すような表面を有し
て、この表面同士が互いに対面して一対設けられてい
る。この各金型３０は、表面の一方向に延びて断面が略
楕円から半円状に湾曲して形成された複数の溝３２を連
続的に備えている。この各溝３０は、溝方向と直交する
方向に、金型３０の一方の端部から他方の端部にかけて
徐々に溝形状が深くなり半円に近づくように形成され、
この溝方向と直交する方向に各溝間壁部３４を切除した
切除部３６が形成されている。切除部３６直線状に金型
３０の一端部から他端部にかけて形成され、同様に複数
列設けられている。The mold 30 has a surface as shown in FIG. 3, and a pair of surfaces are provided facing each other. Each of the molds 30 is continuously provided with a plurality of grooves 32 extending in one direction on the surface and having a cross section curved from a substantially elliptical shape to a semicircular shape. Each groove 30 is formed in a direction orthogonal to the groove direction such that the groove shape gradually becomes deeper from one end of the mold 30 to the other end, and approaches a semicircle.
A cut portion 36 is formed by cutting each groove inter-wall portion 34 in a direction orthogonal to the groove direction. The cut portion 36 is linearly formed from one end to the other end of the mold 30, and is similarly provided in a plurality of rows.
【００１９】ボール１４の製造方法は、一対の金型３０
を互いに対向させて配置し、金型３０の切除部３６に沿
って、連結軸８及びボール形成部材１２を金型３０の入
り口側の端部に配置し、ボール形成部材１２を所定角度
例えば４５°ずつ長軸回りに回転させながら、間欠的に
ピッチｗずつ切除部３６に沿って他方の端部に間欠送り
する。すると、筒状のボール形成部材１２は、図６に示
すように、入り口側端部では溝間壁部３４の頂部により
わずかにくびれを形成するように塑性変形され、さらに
回転しながらｗずつ進行することにより、図６右端部に
至るまでには３次元的な形状のボール１４に成形され
る。この後、ボール１４は個々のボールに分割され、連
結軸８も個々に分離される。The ball 14 is manufactured by a pair of molds 30.
Are arranged to face each other, the connecting shaft 8 and the ball forming member 12 are arranged at the inlet side end of the mold 30 along the cutout portion 36 of the mold 30, and the ball forming member 12 is set at a predetermined angle, for example, 45. While rotating about the major axis by °, intermittently feed by pitch w along the cutout portion 36 to the other end. Then, as shown in FIG. 6, the cylindrical ball-forming member 12 is plastically deformed so as to form a slight constriction at the entrance-side end portion by the apex of the inter-groove wall portion 34, and further advances by w while rotating. By doing so, the ball 14 having a three-dimensional shape is formed by the time it reaches the right end portion in FIG. After this, the balls 14 are divided into individual balls, and the connecting shafts 8 are also individually separated.
【００２０】ここで、溝間壁部３４は、図３に示すよう
に直線状の刃形状であり、溝３２も直線的な溝である
が、ボール形成部材１２を長軸回りに回動させながら多
数回の鍛造により球状に塑性変形するものであり、回動
角度もねじれ等により正確ではなく事実上ボール形成部
材１２の側面を満遍なく押圧し塑性変形させることとな
り、ボール１４は綺麗な３次元形状の球形となる。Here, the inter-groove wall portion 34 has a linear blade shape as shown in FIG. 3, and the groove 32 is also a linear groove , but the ball forming member 12 is rotated about the major axis. However, the ball is plastically deformed into a spherical shape by a large number of forgings, and the rotation angle is not accurate due to twisting or the like. In fact, the side surface of the ball forming member 12 is pressed uniformly and plastically deformed, and the ball 14 has a beautiful three-dimensional shape. It becomes a spherical shape.
【００２１】ここで、金型２０は極めて硬い超硬合金で
形成することが好ましく、溝２２は焼き入れ硬化後若し
くは焼結硬化後の状態で素材硬さに関係なく、切削加
工、研削加工またはワイヤカット放電加工等により、２
次元的、直線的な工具の移動で簡単に形成することがで
きる。これに対して軸挿通部２６は、隔壁２４を切除し
ないようにして形成しなければならないので、この隔壁
２４部分で逃げを有した工具を用いて放電可能により形
成する。この加工には、例えば図４に示すような工具４
０を用いる。この工具４０、放電加工刃４２を備え、こ
の放電加工刃４２にはピッチｗで逃げ４４が形成されて
いる。この工具４０により隔壁２４に逃げ４４を合わせ
てワイヤ放電加工することにより、軸挿通部２６が正確
且つ容易に形成される。また、金型３０の切除部３６
は、機械加工でも放電加工でも良く、直線的に移動する
工具により容易に形成可能である。Here, it is preferable that the die 20 is formed of an extremely hard cemented carbide, and the groove 22 is in a state after quenching hardening or sinter hardening regardless of material hardness, cutting, grinding, or 2 by wire cut electrical discharge machining
It can be easily formed by dimensional and linear movement of the tool. On the other hand, the shaft insertion portion 26 must be formed so as not to cut off the partition wall 24, so that it can be formed by discharge using a tool having a clearance at the partition wall 24 portion. For this processing, for example, a tool 4 as shown in FIG.
0 is used. The tool 40 and the electric discharge machining blade 42 are provided, and the electric discharge machining blade 42 is formed with a clearance 44 at a pitch w. By aligning the clearance 44 with the partition wall 24 by this tool 40 and performing wire electric discharge machining, the shaft insertion portion 26 is accurately and easily formed. In addition, the cutting portion 36 of the mold 30
Can be machined or electric discharge machined and can be easily formed by a tool that moves linearly.
【００２２】この実施形態のボールチェーン部材の製造
用金型は、一つの金型２０，３０に、加工用の溝２２，
３２が直線的に設けられ、加工に用いる軸挿通部２６や
切除部３６の列を複数形成することより、一つの金型２
０，３０で順次場所を変えて塑性加工を行うことがで
き、金型の寿命をその列の数だけ延ばすことができる。
さらに、溝２２，３２を従来のように、ホビング加工や
型彫り放電加工、型彫りフライス加工により形成するも
のではなく、２次元的な機械加工により形成可能であ
り、金型２０，３０の金属材料を超硬合金等の極めて硬
いものを用いることができる。これによっても金型寿命
を延ばすことができる。The mold for manufacturing the ball chain member of this embodiment has a single mold 20, 30 and a groove 22 for machining.
32 is provided linearly, and by forming a plurality of rows of the shaft insertion portion 26 and the cutting portion 36 used for processing, one die 2
It is possible to perform plastic working by sequentially changing places at 0 and 30, and to extend the life of the mold by the number of rows.
Further, the grooves 22 and 32 are not formed by hobbing, die-sinking electric discharge machining, and die-milling as in the prior art, but can be formed by two-dimensional machining, and the metal of the molds 20 and 30 can be formed. An extremely hard material such as cemented carbide can be used as the material. This can also extend the life of the mold.
【００２３】[0023]
【発明の効果】この発明のボールチェーン部材の製造方
法と製造用金型装置によれば、金型製造を容易にし、金
型の製造コストを削減することができる。さらに金型素
材を高硬度、高級化することができるため、金型寿命を
延ばすこともでき、ボールチェーンの製造コストを大幅
に削減することができる。According to the ball chain member manufacturing method and the manufacturing die apparatus of the present invention, the die manufacturing can be facilitated and the die manufacturing cost can be reduced. Furthermore, since the hardness and quality of the mold material can be increased, the life of the mold can be extended and the manufacturing cost of the ball chain can be significantly reduced.
【００２４】また、従来は、上下一組の金型は、１個の
成型部しか設けられなかったが、この発明では、１個の
金型に複数の成型部を設けることができる。さらに、寿
命に達した金型を、再修正加工を施して金型全体を数回
にわたって再利用することも比較的容易に可能である。Further, conventionally, a pair of upper and lower molds was provided with only one molding section, but in the present invention, one mold can be provided with a plurality of molding sections. Further, it is possible to relatively easily reuse the entire die by re-correcting the die that has reached the end of its life.
【００２５】さらに、１個の金型の取り付けによって数
個分の成型部を使用することができるため、金型の取り
付け取り外し、調整等の段取りコストが大幅に削減さ
れ、且つ稼働率も向上する。また、成型部の形状が直線
的で単純であるため、成型時に生じる加工屑等の破片や
ゴミの除去に際して、一方の端部からオイルジェットや
エアジェットにより簡単に除去可能であり、高品質のボ
ールチェーンの製造を可能とする。Furthermore, since several molding parts can be used by mounting one mold, the setup costs for mounting and dismounting the mold, adjustment, etc. are greatly reduced and the operating rate is also improved. . In addition, since the shape of the molding part is linear and simple, when removing debris such as processing chips and dust generated during molding, it can be easily removed from one end with an oil jet or an air jet, and high quality Enables the manufacture of ball chains.
【図面の簡単な説明】[Brief description of drawings]
【図１】この発明の一実施形態のボールチェーン部材の
製造用金型を示す縦断面図である。FIG. 1 is a vertical cross-sectional view showing a mold for manufacturing a ball chain member according to an embodiment of the present invention.
【図２】この発明の一実施形態のボールチェーン部材の
製造用金型を示す概略部分破断斜視図である。FIG. 2 is a schematic partially broken perspective view showing a mold for manufacturing a ball chain member according to an embodiment of the present invention.
【図３】この発明の一実施形態の他のボールチェーン部
材の製造用金型を示す概略部分破断斜視図である。FIG. 3 is another ball chain portion according to the embodiment of the present invention.
It is a schematic partially broken perspective view which shows the metal mold | die for manufacturing a material.
【図４】この発明の一実施形態の金型の製造工具を示す
斜視図である。FIG. 4 is a perspective view showing a mold manufacturing tool according to an embodiment of the present invention.
【図５】製造途中のボールチェーンを示す部分破断正面
図である。FIG. 5 is a partially cutaway front view showing the ball chain during manufacturing.
【図６】製造途中のボールチェーンを示す部分破断斜視
図である。FIG. 6 is a partially cutaway perspective view showing the ball chain during manufacturing.
【図７】従来のボールチェーン部材の製造用金型を示す
斜視図である。FIG. 7 is a perspective view showing a conventional mold for manufacturing a ball chain member .
【符号の説明】 ８ 連結軸 ９ 連結頭部 １０ 板材 １２ ボール形成部材 １４ ボール ２０，３０ 金型 ２２，３２ 溝 ２４ 隔壁 ２６ 軸挿通部 ３４ 溝間壁部 ３６ 切除部[Explanation of symbols] 8 connecting shafts 9 Connected head 10 plate materials 12 Ball forming member 14 balls 20,30 mold 22, 32 groove 24 partitions 26 Shaft insertion part 34 Groove wall 36 excision part
Claims (6)
の一方向に延びて断面が形成され互いに接した一対の溝
が複数列互いに平行に所定間隔で設けられ、上記一対の
溝間の隔壁は、上記溝方向と直交する方向に上記金型の
一方の端部から他方の端部にかけて徐々に溝底部からの
突出高さが高くなるように形成され、この溝方向と直交
する方向に上記各溝間を繋ぐように形成され上記各溝よ
りも浅い軸挿通部が設けられ、上記一対の金型を互いに
対向させて配置し、上記金型をボールチェーンの軸部材
を挟んで両側に設け、上記軸部材を所定角度長軸回りに
回転させながら連結頭部を形成することを特徴とするボ
ールチェーン製造方法。1. A pair of dies, each pair of dies having a pair of grooves extending in one direction on the surface and having a cross section formed in contact with each other and arranged in parallel at a predetermined interval. The partition wall between the grooves is formed such that the protruding height from the groove bottom gradually increases from one end of the mold to the other end in the direction orthogonal to the groove direction. A shaft insertion portion that is formed so as to connect the grooves in a direction orthogonal to each other and is shallower than the grooves is provided, and the pair of molds are arranged to face each other. A method for manufacturing a ball chain, which is provided on both sides of the ball-shaped member, and the connecting head is formed while rotating the shaft member around a major axis by a predetermined angle.
の一方向に延びて断面が形成され互いに接した一対の溝
が複数列互いに平行に所定間隔で設けられ、上記一対の
溝間の隔壁は、溝方向と直交する方向に上記金型の一方
の端部から他方の端部にかけて徐々に溝底部からの突出
高さが高くなるように形成され、この溝方向と直交する
方向に上記各溝間を繋ぐように形成され上記各溝よりも
浅い軸挿通部が設けられたことを特徴とするボールチェ
ーン製造用金型。2. A pair of dies, each pair of dies having a pair of grooves extending in one direction on the surface and having a cross section formed in contact with each other and arranged in parallel at predetermined intervals. The partition wall between the grooves is formed so that the protruding height from the groove bottom gradually increases in the direction orthogonal to the groove direction from one end to the other end of the mold, and is orthogonal to this groove direction. A die for manufacturing a ball chain, characterized in that a shaft insertion portion, which is formed so as to connect the respective grooves in a direction to be formed, and is shallower than the respective grooves is provided.
他端部にかけて、各々互いに平行に複数列形成されてい
ることを特徴とする請求項２記載のボールチェーン製造
用金型。3. The mold for manufacturing a ball chain according to claim 2, wherein the shaft insertion part is formed in a plurality of rows parallel to each other from one end to the other end of the mold.
の一方向に延びて断面が２次元的な湾曲状に形成された
複数の溝を連続的に備え、この各溝は溝方向と直交する
方向に上記金型の一方の端部から他方の端部にかけて徐
々に溝形状が深くなるように形成され、この溝方向と直
交する方向に各溝間壁部を切除した切除部が形成され、
上記一対の金型を互いに対向させて配置し、円筒状のボ
ール形成部材を挟んで上記各金型を両側に設け、上記ボ
ール形成部材を所定角度長軸回りに回転させながらボー
ルを形成することを特徴とするボールチェーン製造方
法。4. A pair of molds, each of which continuously comprises a plurality of grooves extending in one direction on the surface and having a two-dimensional curved cross section. Is formed such that the groove shape gradually becomes deeper from one end of the mold to the other end in a direction orthogonal to the groove direction, and each groove inter-wall part is cut in a direction orthogonal to the groove direction. A cutout is formed,
Forming a ball by arranging the pair of molds so as to face each other, providing the molds on both sides with a cylindrical ball forming member interposed therebetween, and rotating the ball forming member about a predetermined angle about a major axis. A method for manufacturing a ball chain, characterized by:
の一方向に延びて断面が湾曲状に形成された複数の溝を
連続的に備え、この各溝は溝方向と直交する方向に上記
金型の一方の端部から他方の端部にかけて徐々に溝形状
が深くなるように形成され、この溝方向と直交する方向
に各溝間壁部を切除した切除部が形成されたことを特徴
とするボールチェーン製造用金型。5. A pair of molds is provided, and each mold has a plurality of grooves continuously extending in one direction on the surface and having a curved cross section, and each groove is formed in the groove direction. A groove is formed so that the groove shape gradually becomes deeper from one end of the mold to the other end in a direction orthogonal to each other, and a cut portion is formed by cutting each groove inter-wall portion in a direction orthogonal to the groove direction. A mold for manufacturing a ball chain, which has been characterized.
されていることを特徴とする請求項５記載のボールチェ
ーン製造用金型。6. The mold for manufacturing a ball chain according to claim 5, wherein the cutouts are formed in a plurality of rows parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001215212A JP3341002B1 (en) | 2001-07-16 | 2001-07-16 | Ball chain member manufacturing method and manufacturing mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001215212A JP3341002B1 (en) | 2001-07-16 | 2001-07-16 | Ball chain member manufacturing method and manufacturing mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP3341002B1 JP3341002B1 (en) | 2002-11-05 |
| JP2003025041A true JP2003025041A (en) | 2003-01-28 |
Family
ID=19049893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001215212A Expired - Fee Related JP3341002B1 (en) | 2001-07-16 | 2001-07-16 | Ball chain member manufacturing method and manufacturing mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3341002B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460184C (en) * | 2006-02-17 | 2009-02-11 | 上银科技股份有限公司 | Method for making ball-connected chain |
| US7716911B2 (en) | 2008-01-21 | 2010-05-18 | Namiki Co., Ltd. | Ball chain and method of manufacturing the same |
| WO2024134616A1 (en) | 2022-12-22 | 2024-06-27 | Gelteq Limited | Formulations and methods for delivering dietary and pharmaceutical ingredients |
-
2001
- 2001-07-16 JP JP2001215212A patent/JP3341002B1/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460184C (en) * | 2006-02-17 | 2009-02-11 | 上银科技股份有限公司 | Method for making ball-connected chain |
| US7716911B2 (en) | 2008-01-21 | 2010-05-18 | Namiki Co., Ltd. | Ball chain and method of manufacturing the same |
| WO2024134616A1 (en) | 2022-12-22 | 2024-06-27 | Gelteq Limited | Formulations and methods for delivering dietary and pharmaceutical ingredients |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3341002B1 (en) | 2002-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6875515B2 (en) | Cemented Carbide Pressed Product Manufacturing Method and Equipment and Cemented Carbide Pressed Product | |
| JP2008506903A (en) | Cold forming metal bearing roller, its cold forming method, and forming set for cold forming machine | |
| CN109153086B (en) | Method for machining recess using rotary cutting tool | |
| JP2008161874A (en) | Method of manufacturing extruding die, and electrode for electric discharge machining used for the same | |
| JP2008500906A (en) | Stamping device for forming a rod having a shaping end | |
| JP2003025041A (en) | Method and die for manufacturing ball chain member | |
| JPH0465739B2 (en) | ||
| JP2007029978A (en) | Rolling die, and method for manufacturing shaft component with ball-like part by using the die | |
| CN207289036U (en) | A kind of high-precision built-up broach of retainer | |
| US8914966B2 (en) | Die for molding honeycomb structure, and its production method | |
| CN111375851B (en) | Method for processing electrode | |
| EP0347152A2 (en) | Tapered slot end mill | |
| JP5651353B2 (en) | Shaving mold | |
| JPH0513452Y2 (en) | ||
| JP2005288456A (en) | Form-rolling die | |
| JPH11347823A (en) | Cutting method for metal mold | |
| EP0118795A1 (en) | Method for producing a nondirectional pen | |
| CN210789369U (en) | Drill bit capable of reducing burrs and drilling machine assembly | |
| JPS60159518A (en) | Manufacture of file for flint of lighter | |
| CN217831696U (en) | Screw thread rolling plate group, tooth module and screw | |
| KR100401650B1 (en) | manufacturing method of impact device for continuing nail of impact machine | |
| JP4500994B2 (en) | Cutting tool and cutting device | |
| WO2014129517A1 (en) | Rotating tool | |
| JPS598463B2 (en) | Key processing method | |
| JP2001129727A (en) | Method of manufacturing member with fine deep hole or die with fine deep hole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |