JP2006346732A - Forming die - Google Patents

Forming die Download PDF

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JP2006346732A
JP2006346732A JP2005179384A JP2005179384A JP2006346732A JP 2006346732 A JP2006346732 A JP 2006346732A JP 2005179384 A JP2005179384 A JP 2005179384A JP 2005179384 A JP2005179384 A JP 2005179384A JP 2006346732 A JP2006346732 A JP 2006346732A
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workpiece
work
presser
punch holder
punch
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JP2005179384A
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JP4804809B2 (en
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Shigeru Endo
茂 遠藤
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APUROTEKKU KK
Amada Co Ltd
Aprotec Co Ltd
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APUROTEKKU KK
Amada Co Ltd
Aprotec Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a forming die, with which forming of a projected part or a recessed part, such as burring, is performed on a part of a workpiece, and whose constitution is simplified. <P>SOLUTION: The forming die comprises: a die body 43 supporting a workpiece presser 47, which presses a workpiece W, movably in the direction along which the workpiece presser 47 enters and departs the die body 43; a cylinder body 51, integrally provided in the die body 43; a punch holder 53, supported by the cylinder body 51 movably in the direction opposite to the moving direction of the workpiece presser 47; a punch 55, which is provided on the punch holder 53 and whose front end part 55E is projected from a through hole 49H formed in the workpiece presser 47; and a fluid pressure mechanism, which transmits the movement of the workpiece presser 47 to/from the die body 43 to the punch holder 53 as a movement in the direction opposite to the moving direction of the workpiece presser 47. The workpiece presser 47 is formed in a cylindrical shape. One end side of the punch holder 53 is movably fitted into the workpiece presser 47. An end plate 49, which is provided with the through hole 49 in the workpiece presser 47, is attachably, detachably, and changeably provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、例えばバーリング加工などのごとくワークの一部に凸部又は凹部の成形加工を行う成形金型に係り、さらに詳細には、成形金型に移動可能に備えたワーク押えの移動を、流体圧機構を介してパンチホルダに伝達して、上記パンチホルダを前記ワーク押えの移動方向に対して逆方向へ移動する構成の成形金型に関する。   The present invention relates to a molding die for forming a convex portion or a concave portion on a part of a workpiece, for example, burring processing, and more specifically, movement of a work presser provided to be movable to the molding die, The present invention relates to a molding die configured to transmit to a punch holder via a fluid pressure mechanism and move the punch holder in a direction opposite to a moving direction of the work presser.

板状のワークに、例えばバーリング加工等の成形加工を行う場合、ワークに小径孔の穿孔加工を行った後、上記小径孔の部分をパンチにより押圧して、ワーク面から筒状に突出するように凸部の成形加工を行うものである。この場合、プレス機械に往復動自在に備えたラム(ストライカ)側からワークの反対側面(例えば下面側)へ突出するようにバーリング加工(成形加工)を行う場合は、定位置のワークに対してパンチを下降すればよく、比較的容易に行うことができる。   When forming a plate-like workpiece such as burring, for example, after punching a small-diameter hole in the workpiece, the portion of the small-diameter hole is pressed with a punch so that it protrudes in a cylindrical shape from the workpiece surface. The convex part is molded. In this case, when performing burring (molding) so as to protrude from the ram (striker) side provided to the press machine so as to freely reciprocate, to the opposite side (for example, the lower surface) of the workpiece, What is necessary is just to descend | fall a punch and can carry out comparatively easily.

しかし、前記ワークのラム側の面(例えば上面)へ突出するようにバーリング加工を行う場合、下部金型に固定して備えたパンチに対して、ワークのパスラインからワークを大きく下降させる必要がある。したがって、ワークの成形金型を行う箇所によっては、ワークを必要以上に下降せしめることにより悪影響を生じることがある。   However, when performing burring so as to protrude to the ram side surface (for example, the upper surface) of the workpiece, it is necessary to greatly lower the workpiece from the workpiece pass line with respect to the punch fixed to the lower mold. is there. Therefore, depending on the part where the work is molded, there is a case where the work is lowered more than necessary to cause an adverse effect.

そこで、上述のごとき問題を解消すべく、ワークを押さえるワーク押えの移動を流体圧機構を介して、パンチを備えたパンチホルダに伝達する構成を採用した成形金型が提案されている(例えば特許文献1参照)。   Therefore, in order to solve the problems as described above, there has been proposed a molding die that employs a configuration in which the movement of the work presser that holds the work is transmitted to the punch holder equipped with the punch via the fluid pressure mechanism (for example, a patent). Reference 1).

上記特許文献1に記載の金型の構成は、図2に示す構成である。すなわち、成形金型は、パンチプレス(図示省略)における金型ホルダ1に着脱自在な円筒形状の金型ブロック3を備えており、この金型ブロック3の同一円上の複数箇所には小径のピストン5が上下動自在に嵌合してある。そして、前記金型ブロック3の上面には前記ピストン5の抜け止め用のピストン押えプレート7がボルト等によって固定してある。前記ピストン押えプレート7を貫通して上方向へ突出したピストンロッド9には、中央部に貫通孔11Hを備えた板押えプレート11がボルト13によって一体的に取付てある。   The configuration of the mold described in Patent Document 1 is the configuration shown in FIG. That is, the molding die includes a cylindrical die block 3 that is detachably attached to a die holder 1 in a punch press (not shown), and a small diameter is provided at a plurality of locations on the same circle of the die block 3. The piston 5 is fitted so as to be movable up and down. A piston pressing plate 7 for preventing the piston 5 from coming off is fixed to the upper surface of the mold block 3 with a bolt or the like. A plate presser plate 11 having a through hole 11H in the center is integrally attached to the piston rod 9 that protrudes upward through the piston presser plate 7 by bolts 13.

前記金型ブロック3の中央部にはパンチホルダ15が上下動可能に嵌入してあり、このパンチホルダ15の上部には、前記板押えプレート11の前記貫通孔11Hから上方向へ突出自在なパンチ17が着脱交換可能に取付けてある。そして、前記金型ブロック3の下端面に取付けたエンドプレート19と前記パンチホルダ15の下端部に取付けたナット21との間には、ストリッパースプリング23が弾装してある。   A punch holder 15 is fitted in the central portion of the mold block 3 so as to be movable up and down, and a punch that can protrude upward from the through-hole 11H of the plate pressing plate 11 is formed on the punch holder 15. 17 is attached so that attachment or detachment is possible. A stripper spring 23 is mounted between the end plate 19 attached to the lower end surface of the mold block 3 and the nut 21 attached to the lower end portion of the punch holder 15.

前記ピストン5の動作を前記パンチホルダ15に伝達するために、前記パンチホルダ15の長手方向のほぼ中央部にはピストン15Pが形成してあり、このピストン15Pを嵌入した流体圧室25Aと前記各ピストン5を嵌入した各流体圧室25Bは、流体通路27を介して連通してある。したがって、前記ピストン5を下降すると、流体圧室25A,25B内の流体を介して前記パンチホルダ15は相対的に上昇されるものである。   In order to transmit the operation of the piston 5 to the punch holder 15, a piston 15P is formed at a substantially central portion in the longitudinal direction of the punch holder 15, and the fluid pressure chamber 25A in which the piston 15P is fitted and each of the above-described pistons 15P. The fluid pressure chambers 25 </ b> B into which the pistons 5 are inserted communicate with each other via fluid passages 27. Therefore, when the piston 5 is lowered, the punch holder 15 is relatively raised through the fluid in the fluid pressure chambers 25A and 25B.

前記構成において、小孔WHを形成したワークWを前記板押えプレート11上に載置位置決めした状態において、成形穴29Hを下面に備えた上型29を前記ワークWの上面に接触し、その後に上型29をラム等によって強制的に下降すると、ワークW,板押えプレート11およびピストン5が一体的に下降されるので、流体圧室25A,25B内の作動流体を介してパンチホルダ15が相対的に上昇される。そして、パンチホルダ15の上部に備えたパンチ17がワークWの小孔WHの部分を前記上型29の成形穴29H内へ突出成形することとなり、ワークWに上向きのバーリング加工が行われるものである。
特許第2934188号公報
In the above-mentioned configuration, in a state where the work W in which the small hole WH is formed is placed and positioned on the plate holding plate 11, the upper die 29 having the forming hole 29H on the lower surface is brought into contact with the upper surface of the work W, and thereafter When the upper die 29 is forcibly lowered by a ram or the like, the workpiece W, the plate pressing plate 11 and the piston 5 are integrally lowered, so that the punch holder 15 is relatively moved via the working fluid in the fluid pressure chambers 25A and 25B. Will be raised. The punch 17 provided on the upper part of the punch holder 15 projects the small hole WH of the workpiece W into the molding hole 29H of the upper die 29, and the workpiece W is subjected to upward burring. is there.
Japanese Patent No. 2934188

前記説明より理解されるように、前記構成においては、金型ブロック3の複数箇所に流体圧室25Bを穿孔加工し、かつ複数のピストン5,ピストン押えプレート7,板押えプレート11をピストン5に固定する複数のボルト13等を必要とするものであって、加工工数が多いと共に構成部品点数が多く構成が複雑であり、かつ組立作業が厄介であるという問題がある。   As understood from the above description, in the above configuration, the fluid pressure chambers 25 </ b> B are perforated in a plurality of locations of the mold block 3, and the plurality of pistons 5, the piston pressing plate 7, and the plate pressing plate 11 are formed in the piston 5. A plurality of bolts 13 to be fixed are required, and there are problems that the number of processing steps is large, the number of component parts is large, the configuration is complicated, and the assembling work is troublesome.

本発明は、前述のごとき問題に鑑みてなされたもので、板状のワークに成形加工を行うための成形金型であって、前記ワークを押えるワーク押えを出入する方向へ移動可能に支持した金型本体と、前記金型本体に一体的に備えたシリンダ本体と、前記ワーク押えの移動方向に対して反対方向へ移動可能に前記シリンダ本体に支持されたパンチホルダと、このパンチホルダに備えられ前記ワーク押えに形成した貫通孔から先端部が突出可能なパンチと、前記金型本体に対する前記ワーク押えの移動を、当該ワーク押えの移動方向に対して反対方向の移動として前記パンチホルダへ伝達する流体圧機構とを備え、前記ワーク押えは筒状に構成してあり、このワーク押え内に前記パンチホルダの一端側が移動可能に嵌入してあることを特徴とするものである。   The present invention has been made in view of the above-described problems, and is a molding die for molding a plate-shaped workpiece, and is supported so as to be movable in a direction in which a workpiece presser for pressing the workpiece is moved in and out. A die main body, a cylinder main body provided integrally with the die main body, a punch holder supported by the cylinder main body so as to be movable in a direction opposite to the moving direction of the work presser, and the punch holder The punch that can protrude from the through-hole formed in the work holder and the movement of the work holder with respect to the mold body are transmitted to the punch holder as movement in the direction opposite to the movement direction of the work holder. The work presser is configured in a cylindrical shape, and one end side of the punch holder is movably fitted in the work presser. It is.

また、前記成形金型において、前記ワーク押えにおいて前記貫通孔を備えたエンドプレートを着脱交換可能に備えていることを特徴とするものである。   In the molding die, an end plate provided with the through hole is provided in the work holder so as to be attachable and detachable.

また、前記成形金型において、前記ワーク押えの周面に、前記金型本体に形成した係止段部に係止自在な係止部を備えていることを特徴とするものである。   Further, the molding die is provided with a locking portion that can be locked to a locking step portion formed in the mold main body on a peripheral surface of the work presser.

前記構成のごとき本発明によれば、成形金型の構成部品点数が少なくなって構成の簡素化を図ることができ、かつ組立作業がより容易になるものである。   According to the present invention having the above-described configuration, the number of component parts of the molding die can be reduced, the configuration can be simplified, and the assembly work can be facilitated.

以下、図面を用いて本発明の実施形態に係る成形金型の構成について詳細に説明するに、前述した従来の構成要素と同一効果を奏する構成要素には同一符号を付して重複した説明は省略する。   Hereinafter, the configuration of the molding die according to the embodiment of the present invention will be described in detail with reference to the drawings. Components having the same effects as those of the conventional components described above are denoted by the same reference numerals, and redundant descriptions are provided. Omitted.

図1を参照するに、本実施形態に係る成形金型41は、金型ホルダ1に着脱自在に支持される筒状の金型本体43を備えており、この金型本体43の嵌合孔45内にはピストンを兼ねた筒状のワーク押え47が出入する方向(図1において上下方向)に往復動自在に嵌入してある。そして、このワーク押え47の外周面には、当該ワーク押え47の抜け出しを防止すべく、前記金型本体43における前記嵌合孔45の内周面に形成した係止段部45Aに係止自在な係止部47Aが形成してある。   Referring to FIG. 1, a molding die 41 according to the present embodiment includes a cylindrical mold body 43 that is detachably supported by the mold holder 1, and a fitting hole of the mold body 43. In 45, a cylindrical work presser 47 that also serves as a piston is fitted in such a manner that it can reciprocate in the direction in which it moves in and out (vertical direction in FIG. 1). The outer periphery of the work retainer 47 is freely engageable with an engaging step 45A formed on the inner peripheral surface of the fitting hole 45 in the mold body 43 in order to prevent the work retainer 47 from coming off. A locking portion 47A is formed.

さらに、前記ワーク押え47の端部には、貫通孔49Hを中央部に備えたエンドプレート49が、例えばOリングなどのごとき係止具52を介して着脱交換可能に備えられている。なお、前記ワーク押え47とエンドプレート49は一体に設けることも可能である。しかし、後述するパンチの径に対応した径の貫通孔49Hを備えた構成とするには、前記ワーク押え47に対してエンドプレート49を着脱交換可能に備えることが望ましいものである。   Further, an end plate 49 having a through hole 49H in the center is provided at the end of the work retainer 47 so as to be attachable / detachable via a locking tool 52 such as an O-ring. The work holder 47 and the end plate 49 can be provided integrally. However, in order to provide a configuration including a through hole 49 </ b> H having a diameter corresponding to the diameter of the punch, which will be described later, it is desirable that the end plate 49 be detachably attached to the work retainer 47.

前記エンドプレート49の端面(図1においての上面)は、前記金型本体43における端面(上面)から常に突出した状態にあるものである。   The end surface (upper surface in FIG. 1) of the end plate 49 is always in a state of protruding from the end surface (upper surface) of the mold body 43.

前記金型本体43の他端面側、すなわち下部側には筒状のシリンダ本体51が螺着してある。このシリンダ本体51の内径は、前記ワーク押え47の外形よりも大きく形成してあり、このシリンダ本体51内に前記ワーク押え47の下部側の一部が出入可能に設けてある。上記シリンダ本体51の底部51Bを上下動自在に貫通した筒状のパンチホルダ53の上端部は前記ワーク押え47の内孔に摺動可能に嵌入してあり、かつ前記パンチホルダ53の上端部には、前記エンドプレート49の貫通孔49Hから先端部55Eが上方向へ突出自在なパンチ55が従来の構成とほぼ同様の構成によって着脱交換可能に備えられている。   A cylindrical cylinder body 51 is screwed to the other end surface side of the mold body 43, that is, the lower side. An inner diameter of the cylinder body 51 is formed larger than the outer shape of the work retainer 47, and a part of the lower part of the work retainer 47 is provided in the cylinder body 51 so as to be able to enter and exit. An upper end portion of a cylindrical punch holder 53 penetrating the bottom portion 51 </ b> B of the cylinder body 51 is slidably fitted into an inner hole of the work retainer 47, and is fitted to an upper end portion of the punch holder 53. The punch 55 is provided with a tip 55E that can protrude upward from the through hole 49H of the end plate 49 so as to be detachable and replaceable by a configuration similar to the conventional configuration.

すなわち、筒状の前記パンチホルダ53内へ前記パンチ55,ロッド57を順次挿入した後、セットスクリュー59によって固定してある。そして、前記パンチホルダ53の下端部にはボルト61によってスプリング座63が取付けてあり、このスプリング座63と前記シリンダ本体51との間にはストリッパスプリング65が弾装してある。したがって、前記パンチホルダ53はストリッパスプリング65によって常に下方向へ付勢されているものである。   That is, the punch 55 and the rod 57 are sequentially inserted into the cylindrical punch holder 53 and then fixed by the set screw 59. A spring seat 63 is attached to the lower end of the punch holder 53 with a bolt 61, and a stripper spring 65 is mounted between the spring seat 63 and the cylinder body 51. Therefore, the punch holder 53 is always urged downward by the stripper spring 65.

前記構成において、前記シリンダ本体51の内周面と前記ワーク押え47の下面と前記パンチホルダ53の外周面によって区画された空間部(流体圧室)67は流体圧機構を構成するものであって、前記流体圧室67内には作動油などのごとき作動流体が充填してある。なお、図1において符号69はそれぞれシール部材である。   In the above configuration, the space (fluid pressure chamber) 67 defined by the inner peripheral surface of the cylinder body 51, the lower surface of the work holder 47, and the outer peripheral surface of the punch holder 53 constitutes a fluid pressure mechanism. The fluid pressure chamber 67 is filled with a working fluid such as hydraulic oil. In FIG. 1, reference numeral 69 denotes a seal member.

以上のごとき構成において、エンドプレート49の上面にワークWを載置した後、上型29によってワークWを押圧下降すると、ワーク押え47が下降されるので、前記流体圧室67内の作動流体が加圧される。したがって、流体圧室67内の流体圧が、前記パンチホルダ53の外周面に形成した大径の受圧面53Fに作用することとなり、パンチホルダ53はストリッパスプリング65の付勢力に抗して上昇される。よって、従来と同様に、ワークWに上向きのバーリング加工(成形加工)を行うことができるものである。   In the configuration as described above, when the workpiece W is pressed and lowered by the upper die 29 after the workpiece W is placed on the upper surface of the end plate 49, the workpiece presser 47 is lowered, so that the working fluid in the fluid pressure chamber 67 is retained. Pressurized. Therefore, the fluid pressure in the fluid pressure chamber 67 acts on the large pressure receiving surface 53F formed on the outer peripheral surface of the punch holder 53, and the punch holder 53 is raised against the urging force of the stripper spring 65. The Therefore, as in the prior art, upward burring (molding) can be performed on the workpiece W.

以上のごとき説明より既に理解されるように、前記金型本体43,ワーク押え47,エンドプレート49,シリンダ本体51,パンチホルダ53及びパンチ55等は旋削加工によって加工することができるものであって、その加工が容易である。そして、シリンダ本体51に対して、予めパンチ55等を組合わせてユニット化したパンチホルダ53を組合せ、かつパンチホルダ53の上部をワーク押え47に嵌入した状態において、前記シリンダ本体51を金型本体43に螺合することにより、成形金型41の組立てを行うことができるものである。   As already understood from the above description, the mold body 43, the work holder 47, the end plate 49, the cylinder body 51, the punch holder 53, the punch 55, and the like can be machined by turning. The processing is easy. Then, in the state where the punch holder 53 previously combined with the punch 55 and the like is combined with the cylinder body 51 and the upper portion of the punch holder 53 is fitted into the work holder 47, the cylinder body 51 is moved to the mold body. The molding die 41 can be assembled by being screwed to 43.

すなわち、前記構成によれば、成形金型41における構成部品点数を少なくして構成の簡素化を図ることができると共に、組立作業も比較的容易に行うことができ、前述したごとき従来の問題を解消し得るものである。   That is, according to the above-described configuration, the number of component parts in the molding die 41 can be reduced, the configuration can be simplified, and the assembly work can be performed relatively easily. It can be solved.

また、前記構成においては、ワーク押え47は筒状であってピストンを兼ねるものであり、下端部の全面が流体圧室67の作動流体から均等に圧力を受けるものである。したがって、金型本体43に対してワーク押え47が上下動するとき、かじり現象等を生じることなく円滑に上下動するものである。   In the above-described configuration, the work presser 47 is cylindrical and also serves as a piston, and the entire lower end portion receives pressure evenly from the working fluid in the fluid pressure chamber 67. Therefore, when the work presser 47 moves up and down with respect to the mold body 43, it moves smoothly up and down without causing a galling phenomenon or the like.

さらに、パンチホルダ53の上端部が前記ワーク押え47内に摺動自在に嵌入してあり、この上端部にパンチ55を備えた構成であるから、ワークWの成形加工時に、パンチ55に水平方向の分力が作用するような場合、パンチホルダ53等の微小撓みを抑制できることとなり、精度のよい成形加工を行うことができるものである。   Further, since the upper end portion of the punch holder 53 is slidably fitted into the work retainer 47 and the punch 55 is provided at the upper end portion, the punch 55 is horizontally aligned with the punch 55 when the workpiece W is formed. When such a component force is applied, minute bending of the punch holder 53 and the like can be suppressed, and accurate molding can be performed.

本発明の実施形態に係る成形金型の断面説明図である。It is a section explanatory view of a molding die concerning an embodiment of the present invention. 従来の成形金型の断面説明図である。It is sectional explanatory drawing of the conventional shaping die.

符号の説明Explanation of symbols

41 成形金型
43 金型本体
47 ワーク押え
49 エンドプレート
49H 貫通孔
51 シリンダ本体
53 パンチホルダ
55 パンチ
55E 先端部
63 スプリング座
65 ストリッパスプリング
67 流体圧室
41 Molding die 43 Mold body 47 Work clamp 49 End plate 49H Through hole 51 Cylinder body 53 Punch holder 55 Punch 55E Tip 63 Spring seat 65 Stripper spring 67 Fluid pressure chamber

Claims (3)

板状のワークに成形加工を行うための成形金型であって、前記ワークを押えるワーク押えを出入する方向へ移動可能に支持した金型本体と、前記金型本体に一体的に備えたシリンダ本体と、前記ワーク押えの移動方向に対して反対方向へ移動可能に前記シリンダ本体に支持されたパンチホルダと、このパンチホルダに備えられ前記ワーク押えに形成した貫通孔から先端部が突出可能なパンチと、前記金型本体に対する前記ワーク押えの移動を、当該ワーク押えの移動方向に対して反対方向の移動として前記パンチホルダへ伝達する流体圧機構とを備え、前記ワーク押えは筒状に構成してあり、このワーク押え内に前記パンチホルダの一端側が移動可能に嵌入してあることを特徴とする成形金型。   A molding die for molding a plate-like workpiece, a die body that is supported so as to be movable in a direction in which the workpiece presser that presses the workpiece is moved in and out, and a cylinder that is integrally provided in the die body A main body, a punch holder supported by the cylinder main body so as to be movable in a direction opposite to the moving direction of the work presser, and a tip portion that can be protruded from a through-hole provided in the punch holder and formed in the work presser A punch and a fluid pressure mechanism that transmits the movement of the work press relative to the mold body to the punch holder as a movement in a direction opposite to the movement direction of the work press; and the work press is configured in a cylindrical shape A molding die, wherein one end side of the punch holder is movably fitted in the work presser. 請求項1に記載の成形金型において、前記ワーク押えにおいて前記貫通孔を備えたエンドプレートを着脱交換可能に備えていることを特徴とする成形金型。   2. The molding die according to claim 1, wherein an end plate provided with the through-hole is detachably / replaceably provided in the work holder. 3. 請求項1又は2に記載の成形金型において、前記ワーク押えの周面に、前記金型本体に形成した係止段部に係止自在な係止部を備えていることを特徴とする成形金型。   3. The molding die according to claim 1 or 2, wherein a locking portion that can be locked to a locking step portion formed on the mold body is provided on a peripheral surface of the work presser. Mold.
JP2005179384A 2005-06-20 2005-06-20 Mold Expired - Fee Related JP4804809B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008043975A (en) * 2006-08-15 2008-02-28 Amada Co Ltd Forming die

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6277124A (en) * 1985-09-30 1987-04-09 Ohashi Seisakusho:Kk Press metal die for punching and burring
JPH02123316U (en) * 1989-03-23 1990-10-11
JPH05285553A (en) * 1992-04-14 1993-11-02 Amada Metrecs Co Ltd Die forming metallic mold
JPH08155684A (en) * 1994-12-05 1996-06-18 Nisshinbo Ind Inc Double-acting hydraulic cylinder
JP2004001093A (en) * 1998-02-06 2004-01-08 Amada Co Ltd Forming die

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6277124A (en) * 1985-09-30 1987-04-09 Ohashi Seisakusho:Kk Press metal die for punching and burring
JPH02123316U (en) * 1989-03-23 1990-10-11
JPH05285553A (en) * 1992-04-14 1993-11-02 Amada Metrecs Co Ltd Die forming metallic mold
JPH08155684A (en) * 1994-12-05 1996-06-18 Nisshinbo Ind Inc Double-acting hydraulic cylinder
JP2004001093A (en) * 1998-02-06 2004-01-08 Amada Co Ltd Forming die

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008043975A (en) * 2006-08-15 2008-02-28 Amada Co Ltd Forming die

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