JP4649255B2 - Closing processing method and closing processing machine - Google Patents

Closing processing method and closing processing machine Download PDF

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JP4649255B2
JP4649255B2 JP2005101786A JP2005101786A JP4649255B2 JP 4649255 B2 JP4649255 B2 JP 4649255B2 JP 2005101786 A JP2005101786 A JP 2005101786A JP 2005101786 A JP2005101786 A JP 2005101786A JP 4649255 B2 JP4649255 B2 JP 4649255B2
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mold
workpiece
closing
holder
heated
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JP2006281236A (en
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太二 服部
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KYB Corp
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KYB Corp
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Priority to JP2005101786A priority Critical patent/JP4649255B2/en
Priority to ES06731215T priority patent/ES2417017T3/en
Priority to US11/887,137 priority patent/US20090272170A1/en
Priority to PCT/JP2006/307267 priority patent/WO2006107088A1/en
Priority to EP06731215.7A priority patent/EP1867404B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/16—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/04—Reducing; Closing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/12—Shaping end portions of hollow articles
    • B21K21/14—Shaping end portions of hollow articles closed or substantially-closed ends, e.g. cartridge bottoms

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Description

本発明は、クロージング加工方法及びクロージング加工機の改良に関するものである。   The present invention relates to an improvement of a closing method and a closing machine.

金属パイプ材の開口端部を閉塞するクロージング加工方法はスピニング加工方法の一つである（特許文献１参照）。   The closing method for closing the open end of the metal pipe material is one of the spinning methods (see Patent Document 1).

このクロージング加工方法は金属パイプ材からなるワークを回転させ、ワークを加熱しながらワークに金型を押し当て、徐々に金型に近づけて塑性変形させる。   In this closing method, a workpiece made of a metal pipe material is rotated, a mold is pressed against the workpiece while the workpiece is heated, and is gradually brought closer to the mold and plastically deformed.

このクロージング加工に用いられるクロージング加工機は、ワークの外周面を把持する外径チャックと、外径チャックをワークと共に回転駆動するチャックスピンドルとを備え、回転するワークに対してオフセット量を持って回転する金型をワークに押し当ててワークをクロージング加工するようになっている。   The closing machine used for the closing process includes an outer diameter chuck for gripping the outer peripheral surface of the workpiece, and a chuck spindle that rotates the outer diameter chuck together with the workpiece, and rotates with an offset amount with respect to the rotating workpiece. The mold is pressed against the workpiece and the workpiece is closed.

従来のクロージング加工機は、高周波加熱装置によって金型を発振加熱し、３００℃以上に高温となった金型をワークに押し当ててワークを加熱し、ワークをクロージング加工するようになっている。
特開２００２−１５３９３０号公報 In a conventional closing machine, a mold is oscillated and heated by a high-frequency heating device, the mold heated to a temperature higher than 300 ° C. is pressed against the workpiece, the workpiece is heated, and the workpiece is closed.
JP 2002-153930 A

しかしながら、従来のクロージング加工機に用いられる金型は、高周波加熱装置によって発振加熱する材質として、例えば熱間用ダイス鋼等の鋼材によって形成されているため、例えば超硬合金に比べて耐摩耗性が低く、寿命が短いという問題点があった。   However, since the mold used in the conventional closing machine is formed of a steel material such as hot die steel as a material to be oscillated and heated by a high-frequency heating device, it has higher wear resistance than, for example, cemented carbide. However, there was a problem that the lifetime was short.

本発明は上記の問題点に鑑みてなされたものであり、金型の寿命を延ばせるクロージング加工方法及びクロージング加工機を提供することを目的とする。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a closing method and a closing machine that can extend the life of a mold.

本発明は、高周波加熱装置によって金型を加熱し、回転するワークに対して加熱された金型を押し当ててこのワークをクロージング加工するクロージング加工方法において、金型は、ワークに当接する金型本体を非鉄系金属によって形成し、この金型本体を包囲するホルダを鉄系金属によって形成し、高周波加熱装置によってホルダを発振加熱し、ホルダからの伝熱によって金型本体を加熱することを特徴とするものとした。   The present invention relates to a closing processing method in which a mold is heated by a high-frequency heating device, and the heated mold is pressed against a rotating workpiece to close the workpiece. The main body is formed of a non-ferrous metal, the holder surrounding the mold main body is formed of a ferrous metal, the holder is oscillated and heated by a high-frequency heating device, and the mold main body is heated by heat transfer from the holder. It was supposed to be.

本発明は、高周波加熱装置によって金型を加熱し、回転するワークに対して加熱された金型を押し当ててこのワークをクロージング加工するクロージング加工機において、金型はワークに当接する金型本体と、この金型本体を包囲するホルダとを備え、金型本体を非鉄系金属によって形成し、ホルダを鉄系金属によって形成し、高周波加熱装置によってホルダを発振加熱し、ホルダからの伝熱によって金型本体を加熱することを特徴とするものとした。   The present invention relates to a closing machine that heats a mold by a high-frequency heating device, presses the heated mold against a rotating workpiece, and closes the workpiece. And a holder surrounding the mold body, the mold body is formed of a non-ferrous metal, the holder is formed of an iron metal, the holder is oscillated and heated by a high-frequency heating device, and heat is transferred from the holder. The mold body is heated.

本発明は、クロージング加工時、回転するワークを加熱しながら金型を押し当て、金型に近づけて塑性変形させる。   In the present invention, during the closing process, the mold is pressed while heating the rotating workpiece, and is plastically deformed by being brought close to the mold.

上記クロージング加工時、高周波加熱装置は金型を電磁誘導によって発振加熱する。高周波加熱装置の誘導コイルに高周波電流を流すと金型に高周波磁束が発生し、鉄系金属によってからなるホルダはこの高周波磁束によって高い電流が誘導され、ジュール熱が発生して自己発熱をする。一方、非鉄系金属である超硬合金からなる金型本体は電磁誘導によって発振加熱しないが、ホルダからの伝熱によって加熱される。   During the closing process, the high-frequency heating device oscillates and heats the mold by electromagnetic induction. When a high-frequency current is passed through the induction coil of the high-frequency heating device, a high-frequency magnetic flux is generated in the mold, and a high current is induced in the holder made of iron-based metal by this high-frequency magnetic flux, and Joule heat is generated and self-heats. On the other hand, a mold body made of a cemented carbide which is a non-ferrous metal is not oscillated and heated by electromagnetic induction, but is heated by heat transfer from a holder.

ワークに押し当てられる金型本体は電磁誘導によって発振加熱する必要がないため、耐摩耗性が高い非鉄系金属によって形成することが可能となる。これにより、金型の寿命を大幅に延ばし、長時間のクロージング加工の連続運転によって生産効率を向上させることができる。   Since the die body pressed against the workpiece does not need to be oscillated and heated by electromagnetic induction, it can be formed of a non-ferrous metal having high wear resistance. Thereby, the lifetime of a metal mold | die can be extended significantly and production efficiency can be improved by the continuous operation of a long-time closing process.

以下、本発明の実施の形態を添付図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

図１〜図３にクロージング加工機１の全体構成を示す。図１〜図３において、互いに直交するＸ、Ｙ、Ｚの３軸を設定し、Ｘ軸が略水平横方向に延び、Ｙ軸が略水平前後方向に延び、Ｚ軸が略垂直方向に延びるものとし、クロージング加工機１の全体構成について説明する。   1 to 3 show the overall configuration of the closing machine 1. 1-3, three axes X, Y, and Z orthogonal to each other are set, the X axis extends in a substantially horizontal lateral direction, the Y axis extends in a substantially horizontal front-rear direction, and the Z axis extends in a substantially vertical direction. The overall configuration of the closing machine 1 will be described.

クロージング加工機１の中央部にはワーク９を回転駆動する２台のチャックスピンドル２０と金型４を駆動する１台の金型駆動装置４０が設けられる。各チャックスピンドル２０は、後述するチャックスピンドル移動装置３０を介して架台３に対してＸ軸方向について往復動し、クロージング加工機１の中央部へと交互に移動し、ワーク９を金型４に対峙させる。   In the central part of the closing machine 1, two chuck spindles 20 for rotating the workpiece 9 and one mold driving device 40 for driving the mold 4 are provided. Each chuck spindle 20 reciprocates in the X-axis direction with respect to the gantry 3 via a chuck spindle moving device 30 to be described later, and alternately moves to the center of the closing processing machine 1 to move the workpiece 9 to the mold 4. Make them confront.

クロージング加工機１は、高周波加熱装置２によって金属パイプ材からなるワーク９を加熱し、回転するワーク９に金型４を押し当ててワーク９を塑性変形させることによって、ワーク９の開口端部を閉塞するクロージング加工を行う。   The closing machine 1 heats the work 9 made of a metal pipe material by the high-frequency heating device 2, presses the mold 4 against the rotating work 9 and plastically deforms the work 9, thereby opening the opening end of the work 9. The closing process is performed.

クロージング加工機１の中央部には、ワーク９をクロージング加工するチャックスピンドル２０の前方に位置してワーク９の端部を支持するスラストストッパ移動装置６０と、芯金５をワーク９の内側に移動する芯金移動装置５０とが設けられる。   At the center of the closing machine 1, a thrust stopper moving device 60 that is positioned in front of the chuck spindle 20 that closes the workpiece 9 and supports the end of the workpiece 9, and the mandrel 5 is moved to the inside of the workpiece 9. And a mandrel moving device 50 is provided.

クロージング加工機１の左右の後部にはそれぞれ一対のコンベア１８とワーク投入装置１０が設けられる。ワーク９は各コンベア１８によってＹ軸方向前方に搬送された後、Ｙ軸方向に移動可能な各ワーク投入装置１０によってＹ軸方向前方に搬送され、左右のチャックスピンドル２０に投入し把持される。   A pair of conveyors 18 and a workpiece input device 10 are provided at the left and right rear portions of the closing processing machine 1, respectively. The workpiece 9 is conveyed forward in the Y-axis direction by each conveyor 18, and then conveyed forward in the Y-axis direction by each workpiece loading device 10 movable in the Y-axis direction, and is loaded and gripped on the left and right chuck spindles 20.

一方のチャックスピンドル２０がクロージング加工機１の中央部に位置してクロージング加工を行っている間、他方のチャックスピンドル２０がクロージング加工機１の左右端部のいずれかに位置して各ワーク投入装置１０に搬送されるワーク９を受け取る。   While one chuck spindle 20 is positioned at the center of the closing machine 1 and performing the closing process, the other chuck spindle 20 is positioned at one of the left and right ends of the closing machine 1 and each workpiece input device. The workpiece 9 conveyed to 10 is received.

クロージング加工機１の前部には、クロージング加工後のワーク９を搬出する搬出装置１７が設けられる。搬出装置１７はワーク９を把持するハンド１３を架台３に対してＸ軸方向について往復動し、左右のチャックスピンドル２０から押し出されるワーク９をクロージング加工機１の右前部に配置されたコンベア１９へと搬送する。   An unloading device 17 for unloading the workpiece 9 after the closing process is provided at the front of the closing machine 1. The carry-out device 17 reciprocates the hand 13 that grips the workpiece 9 in the X-axis direction with respect to the gantry 3, and moves the workpiece 9 pushed out from the left and right chuck spindles 20 to the conveyor 19 disposed at the right front portion of the closing processing machine 1. And carry.

クロージング加工を終えて１０００℃以上に高温となるワーク９は、コンベア１９によって冷却装置７０（図３参照）へと搬送され、冷却装置７０にて冷却される。冷却装置７０はクロージング加工機１の前方右側に設けられている。   The workpiece 9 that has finished the closing process and has a high temperature of 1000 ° C. or higher is conveyed to the cooling device 70 (see FIG. 3) by the conveyor 19 and cooled by the cooling device 70. The cooling device 70 is provided on the front right side of the closing machine 1.

図４の（ａ）〜（ｇ）にクロージング加工機１がワーク９にクロージング加工する一連の工程を示す。以下、このクロージング加工方法の各工程を順に説明する。   4A to 4G show a series of steps in which the closing machine 1 closes the workpiece 9. Hereinafter, each process of this closing processing method is demonstrated in order.

図４の（ａ）に示すように、ワーク投入装置１０の内径チャック８をワーク９内に挿入し、その内径チャック８がワーク９の内周面を把持する。   As shown in FIG. 4A, the inner diameter chuck 8 of the work loading device 10 is inserted into the work 9, and the inner diameter chuck 8 grips the inner peripheral surface of the work 9.

図４の（ｂ）に示すように、ワーク投入装置１０が内径チャック８をＹ軸方向に前進させてワーク９をチャックスピンドル２０の外径チャック７に挿入し、外径チャック７がワーク９の外周面を把持する。   As shown in FIG. 4B, the workpiece loading device 10 advances the inner diameter chuck 8 in the Y-axis direction and inserts the workpiece 9 into the outer diameter chuck 7 of the chuck spindle 20. Hold the outer surface.

図４の（ｃ）に示すように、ワーク投入装置１０が内径チャック８をＹ軸方向に後退させて内径チャック８をワーク９から抜き取る。続いてチャックスピンドル移動装置３０がチャックスピンドル２０をＸ軸方向に移動してワーク９を金型４に対峙する加工位置に停止させる。   As shown in FIG. 4C, the work loading device 10 retracts the inner diameter chuck 8 in the Y-axis direction and extracts the inner diameter chuck 8 from the work 9. Subsequently, the chuck spindle moving device 30 moves the chuck spindle 20 in the X-axis direction to stop the workpiece 9 at a processing position facing the mold 4.

図４の（ｄ）に示すように、スラストストッパ移動装置６０がスラストストッパ６をワーク９の基端部９ｂを支持するスラスト加工基準位置に移動する。   As shown in FIG. 4D, the thrust stopper moving device 60 moves the thrust stopper 6 to the thrust processing reference position that supports the base end portion 9 b of the workpiece 9.

図４の（ｅ）に示すように、芯金移動装置５０が芯金５をワーク９の内側に投入する。   As shown in (e) of FIG. 4, the cored bar moving device 50 puts the cored bar 5 into the work 9.

図４の（ｆ）に示すように、チャックスピンドル２０がワーク９と芯金５を回転駆動する。一方、金型駆動装置４０が加熱された金型４をワーク９に押し当てる。これにより、金型４と芯金５の間でワーク９の先端部９ａが次第に絞られ、最終的にワーク９の先端部９ａを閉塞した底部９ｃを形成する。   As shown in FIG. 4F, the chuck spindle 20 drives the workpiece 9 and the core metal 5 to rotate. On the other hand, the mold drive unit 40 presses the heated mold 4 against the workpiece 9. As a result, the tip 9a of the workpiece 9 is gradually narrowed between the mold 4 and the cored bar 5, and finally a bottom 9c that closes the tip 9a of the workpiece 9 is formed.

図４の（ｇ）に示すように、金型駆動装置４０が金型４をＹ軸方向後方に移動し、ワーク９から離す。一方、スラストストッパ移動装置６０がスラストストッパ６をＹ軸方向前方に移動してスラスト加工基準位置から離すとともに、芯金移動装置５０が芯金５をワーク９の内側から抜き取る。   As shown in FIG. 4G, the mold driving device 40 moves the mold 4 rearward in the Y-axis direction and separates it from the work 9. On the other hand, the thrust stopper moving device 60 moves the thrust stopper 6 forward in the Y-axis direction to move away from the thrust processing reference position, and the core metal moving device 50 extracts the core metal 5 from the inside of the workpiece 9.

続けて別のワーク９をクロージング加工する場合、図４の（ａ）に示すように、チャックスピンドル移動装置３０がチャックスピンドル２０をＸ軸方向に移動してワーク９を内径チャック８に対峙させる。そして、図４の（ｂ）に示すように、ワーク投入装置１０が内径チャック８をＹ軸方向に前進させ、クロージング加工前のワーク９の基端部９ｂをクロージング加工済みのワーク９の底部９ｃに当接させてクロージング加工済みのワーク９を外径チャック７から押し出す。   When another workpiece 9 is subsequently closed, the chuck spindle moving device 30 moves the chuck spindle 20 in the X-axis direction so that the workpiece 9 faces the inner diameter chuck 8 as shown in FIG. Then, as shown in FIG. 4B, the workpiece loading device 10 advances the inner diameter chuck 8 in the Y-axis direction, and the base end portion 9b of the workpiece 9 before the closing process is moved to the bottom portion 9c of the workpiece 9 that has been subjected to the closing process. The workpiece 9 that has been subjected to the closing process is pushed out from the outer diameter chuck 7 by being brought into contact with the outer diameter chuck 7.

一方、ワーク９のクロージング加工を終了する場合、図４の（ｈ）に示すように、ワーク投入装置１０が内径チャック８をＹ軸方向に前進させ、内径チャック８をクロージング加工済みのワーク９の底部９ｃに当接させてクロージング加工済みのワーク９を外径チャック７から押し出す。   On the other hand, when the closing process of the workpiece 9 is finished, as shown in FIG. 4 (h), the workpiece loading device 10 advances the inner diameter chuck 8 in the Y-axis direction, and the inner diameter chuck 8 of the workpiece 9 that has been subjected to the closing process. The workpiece 9 that has been subjected to the closing process is pushed out from the outer diameter chuck 7 in contact with the bottom portion 9c.

以上、クロージング加工機１の全体構成を説明した。   The overall configuration of the closing machine 1 has been described above.

次に図５に示す金型４の構成を説明する。   Next, the configuration of the mold 4 shown in FIG. 5 will be described.

金型４は、ワーク９に当接する金型本体６０１と、この金型本体６０１を包囲するホルダ６１１とを互いに別体で形成する。   In the mold 4, a mold body 601 that contacts the workpiece 9 and a holder 611 that surrounds the mold body 601 are formed separately from each other.

金型本体６０１を非鉄系金属として超硬合金によって形成する。この超硬合金は、金属炭化物粉末と例えばタングステン、バナジウム、チタン、タンタル、コバルト等からなる非鉄系金属粉末を配合して焼結して形成され、高い耐熱性と耐摩耗性を有する。   The mold body 601 is made of a cemented carbide as a non-ferrous metal. This cemented carbide is formed by blending and sintering a metal carbide powder and a non-ferrous metal powder made of, for example, tungsten, vanadium, titanium, tantalum, cobalt, etc., and has high heat resistance and wear resistance.

金型本体６０１は円盤状の外形を有し、ワーク９に対峙する端面６０２に対して凹状に窪みワーク９に当接する成形凹部６０３を有する。クロージング加工時にこの成形凹部６０３に沿ってワーク９の先端部９ａが絞られる。   The mold main body 601 has a disk-like outer shape, and has a molding recess 603 that is recessed with respect to the end surface 602 facing the work 9 and is in contact with the work 9. The tip end portion 9a of the workpiece 9 is squeezed along the forming recess 603 during the closing process.

ホルダ６１１は鉄系金属として鋼材によって形成し、高周波加熱装置２によってホルダ６１１を発振加熱し、ホルダ６１１からの伝熱によって金型本体６０１を加熱する。鋼材は例えば熱間用ダイス鋼を用いる。   The holder 611 is formed of a steel material as an iron-based metal, oscillates the holder 611 with the high frequency heating device 2, and heats the mold body 601 by heat transfer from the holder 611. As the steel material, for example, hot die steel is used.

ホルダ６１１は金型本体６０１を包囲する円筒状の金型外壁部６１５と、この金型外壁部６１５の端面６１６に対して凹状に窪む凹部６１２と、金型駆動装置４０の図示しないチャックに把持される軸部６１３と、この軸部６１３をＹ軸方向に貫通する穴６１４とを有する。   The holder 611 is a cylindrical mold outer wall 615 that surrounds the mold body 601, a recess 612 that is recessed in the end surface 616 of the mold outer wall 615, and a chuck (not shown) of the mold drive device 40. A shaft portion 613 to be gripped and a hole 614 that penetrates the shaft portion 613 in the Y-axis direction are provided.

ホルダ６１１の凹部６１２に対して金型本体６０１を焼き嵌めによって結合する。この焼き嵌め時に凹部６１２と金型本体６０１の間の空気が穴６１４から抜けるようになっている。   The mold body 601 is coupled to the recess 612 of the holder 611 by shrink fitting. The air between the recess 612 and the mold body 601 is allowed to escape from the hole 614 during the shrink fitting.

高周波加熱装置２の誘導コイルは、ホルダ６１１の金型外壁部６１５を間隙をもって囲む環状に形成され、金型４と同心円上に設けられる。   The induction coil of the high-frequency heating device 2 is formed in an annular shape that surrounds the mold outer wall 615 of the holder 611 with a gap, and is provided concentrically with the mold 4.

クロージング加工機１は以上のように構成されて、次に作用について説明する。   The closing machine 1 is configured as described above, and the operation will be described next.

クロージング加工機１はチャックスピンドル２０がワーク９と芯金５を回転駆動する一方、高周波加熱装置２が金型４を発振加熱し、金型駆動装置４０が金型４をワーク９に対してオフセット量を持って回転させながらワーク９に押し当ててクロージング加工する。これにより、図４の（ｆ）に示すように、金型４と芯金５の間でワーク９の先端部９ａが成形凹部６０３に沿って次第に絞られ、最終的にワーク９の先端部９ａを閉塞した底部９ｃが形成される。   In the closing processing machine 1, the chuck spindle 20 rotates and drives the workpiece 9 and the core 5, while the high-frequency heating device 2 oscillates and heats the die 4, and the die driving device 40 offsets the die 4 with respect to the workpiece 9. The workpiece is pressed against the workpiece 9 while being rotated with a sufficient amount, and is subjected to a closing process. As a result, as shown in FIG. 4 (f), the tip 9 a of the work 9 is gradually narrowed along the molding recess 603 between the mold 4 and the core 5, and finally the tip 9 a of the work 9. The bottom 9c is closed.

上記したクロージング加工時、高周波加熱装置２は金型４を電磁誘導によって発振加熱する。高周波加熱装置２の誘導コイルに高周波電流を流すと金型４に高周波磁束が発生し、鋼材からなるホルダ６１１はこの高周波磁束によって高い電流が誘導され、ジュール熱が発生して自己発熱をする。一方、非鉄系金属である超硬合金からなる金型本体６０１は電磁誘導によって発振加熱しないが、ホルダ６１１からの伝熱によって加熱される。   During the above-described closing process, the high-frequency heating device 2 oscillates and heats the mold 4 by electromagnetic induction. When a high-frequency current is passed through the induction coil of the high-frequency heating device 2, a high-frequency magnetic flux is generated in the mold 4, and a high current is induced in the holder 611 made of steel by this high-frequency magnetic flux, Joule heat is generated and self-heats. On the other hand, the mold body 601 made of a cemented carbide which is a non-ferrous metal is not oscillated and heated by electromagnetic induction, but is heated by heat transfer from the holder 611.

ホルダ６１１は金型本体６０１を包囲する円筒状の金型外壁部６１５を有し、高周波加熱装置２の誘導コイルを金型外壁部６１５を囲むように設けたため、高周波加熱装置２は金型外壁部６１５を電磁誘導によって有効に発振加熱し、金型外壁部６１５は金型本体６０１を伝熱によって有効に加熱することができる。   The holder 611 has a cylindrical mold outer wall 615 that surrounds the mold body 601, and the induction coil of the high-frequency heating device 2 is provided so as to surround the mold outer wall 615. The part 615 can be effectively oscillated and heated by electromagnetic induction, and the mold outer wall part 615 can effectively heat the mold body 601 by heat transfer.

金型４は、ワーク９に押し当てられる金型本体６０１が鋼材より耐摩耗性が高い超硬合金によって形成されているため、金型４の寿命を熱間用ダイス鋼からなる従来の金型に比べて４倍程度に延ばすことが可能となり、長時間のクロージング加工の連続運転によって生産効率を向上させることができる。   Since the mold body 601 pressed against the workpiece 9 is made of a cemented carbide having higher wear resistance than steel, the mold 4 has a conventional mold made of hot die steel. Compared to the above, it is possible to extend it to about 4 times, and the production efficiency can be improved by continuous operation of the closing process for a long time.

さらに、金型本体６０１は鋼材より硬度が高いため、クロージング加工時におけるワーク９の摩耗を低減することができる。   Furthermore, since the mold body 601 is harder than steel, it is possible to reduce the wear of the workpiece 9 during the closing process.

また、金型本体６０１を形成する非鉄系金属として、超硬合金に限らずセラミック材等を用いても良い。   Further, the non-ferrous metal forming the mold body 601 is not limited to the cemented carbide but may be a ceramic material or the like.

本発明は上記の実施の形態に限定されずに、その技術的な思想の範囲内において種々の変更がなしうることは明白である。   The present invention is not limited to the above-described embodiment, and it is obvious that various modifications can be made within the scope of the technical idea.

本発明のクロージング加工方法及びクロージング加工機は、ワークの開口端部を閉塞するクロージング加工に限らず、回転するワークに対して金型をワークに押し当ててワークを絞り加工するスピニング加工に利用できる。   The closing processing method and the closing processing machine of the present invention are not limited to closing processing that closes the opening end of the workpiece, but can be used for spinning processing that presses a mold against the rotating workpiece and draws the workpiece. .

本発明の実施の形態を示すクロージング加工機の側面図。The side view of the closing processing machine which shows embodiment of this invention. 同じくクロージング加工機の平面図。The top view of a closing processing machine similarly. 同じくクロージング加工機の正面図。The front view of a closing processing machine. 同じくクロージング加工する工程を示す図。The figure which similarly shows the process of closing. 同じく金型の断面図。Sectional drawing of a metal mold.

符号の説明Explanation of symbols

１ クロージング加工機
２ 加熱装置
４ 金型
５ 芯金
７ 外径チャック
８ 内径チャック
９ ワーク
１０ ワーク投入装置
２０ チャックスピンドル
４０ 金型駆動装置
６０１ 金型本体
６１１ ホルダ
６１５ 金型外壁部 DESCRIPTION OF SYMBOLS 1 Closing machine 2 Heating device 4 Mold 5 Core metal 7 Outer diameter chuck 8 Inner diameter chuck 9 Workpiece 10 Workpiece input device 20 Chuck spindle 40 Mold drive device 601 Mold body 611 Holder 615 Mold outer wall

Claims (4)

高周波加熱装置によって金型を加熱し、回転するワークに対して加熱された金型を押し当ててこのワークをクロージング加工するクロージング加工方法において、
前記金型は、前記ワークに当接する金型本体を非鉄系金属によって形成し、この金型本体を包囲するホルダを鉄系金属によって形成し、
前記高周波加熱装置によって前記ホルダを発振加熱し、前記ホルダからの伝熱によって前記金型本体を加熱することを特徴とするクロージング加工方法。 In a closing processing method for heating a mold by a high-frequency heating device, pressing the heated mold against a rotating workpiece and closing the workpiece,
The mold is formed of a non-ferrous metal mold body that contacts the workpiece, and a holder surrounding the mold body is formed of a ferrous metal,
A closing method, wherein the holder is oscillated and heated by the high-frequency heating device, and the mold body is heated by heat transfer from the holder. 高周波加熱装置によって金型を加熱し、回転するワークに対して加熱された金型を押し当ててこのワークをクロージング加工するクロージング加工機において、
前記金型は前記ワークに当接する金型本体と、この金型本体を包囲するホルダとを備え、
前記金型本体を非鉄系金属によって形成し、
前記ホルダを鉄系金属によって形成し、
前記高周波加熱装置によって前記ホルダを発振加熱し、前記ホルダからの伝熱によって前記金型本体を加熱することを特徴とするクロージング加工機。 In a closing processing machine that heats a mold by a high-frequency heating device and presses the heated mold against a rotating work to close the work,
The mold includes a mold body that contacts the workpiece, and a holder that surrounds the mold body,
The mold body is formed of a non-ferrous metal,
The holder is formed of an iron-based metal;
A closing processing machine characterized in that the holder is oscillated and heated by the high-frequency heating device, and the mold body is heated by heat transfer from the holder. 前記金型本体を超硬合金によって形成したことを特徴とする請求項２に記載のクロージング加工機。   The closing machine according to claim 2, wherein the mold body is formed of a cemented carbide. 前記ホルダは前記金型本体を包囲する円筒状の金型外壁部を有し、
前記高周波加熱装置の誘導コイルを前記金型外壁部を囲むように設けたことを特徴とする請求項２または３に記載のクロージング加工機。 The holder has a cylindrical mold outer wall portion surrounding the mold body,
The closing processing machine according to claim 2, wherein an induction coil of the high-frequency heating device is provided so as to surround the outer wall portion of the mold.
JP2005101786A 2005-03-31 2005-03-31 Closing processing method and closing processing machine Active JP4649255B2 (en)

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ES06731215T ES2417017T3 (en) 2005-03-31 2006-03-30 Closing procedure and closing machine
US11/887,137 US20090272170A1 (en) 2005-03-31 2006-03-30 Closing Method and Closing Machine
PCT/JP2006/307267 WO2006107088A1 (en) 2005-03-31 2006-03-30 Closing method and closing machine
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ES2417017T3 (en) 2013-08-05
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WO2006107088A1 (en) 2006-10-12
EP1867404A1 (en) 2007-12-19
EP1867404B1 (en) 2013-05-08
US20090272170A1 (en) 2009-11-05

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