JP2007075845A - Driving device for press - Google Patents

Driving device for press Download PDF

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JP2007075845A
JP2007075845A JP2005265369A JP2005265369A JP2007075845A JP 2007075845 A JP2007075845 A JP 2007075845A JP 2005265369 A JP2005265369 A JP 2005265369A JP 2005265369 A JP2005265369 A JP 2005265369A JP 2007075845 A JP2007075845 A JP 2007075845A
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reduction gear
press
slide
drive device
link
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JP4880956B2 (en
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Hiroyuki Amino
廣之 網野
Gen Ro
言 呂
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Amino Corp
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Amino Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/10—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
    • B30B1/103—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism operated by screw means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/14—Control arrangements for mechanically-driven presses
    • B30B15/146—Control arrangements for mechanically-driven presses for synchronising a line of presses

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a press driving device with high safety which has a large driving capacity, thus is suitable for a large-sized press, and further, has satisfactory balancing in a slide, and, in which, even in case the trouble of a controller and the failure of a control soft are generated, the generation of troubles such as the failure of a frame and a die can be evaded. <P>SOLUTION: The driving device for elevating/lowering a slide confronted with a bed comprises: a rotating shaft symmetrically having a right screw part and a left screw part, and in which an intermediate part is fixed to a reduction gear; a servomotor of driving the reduction gear; right and left moving bodies installed in the parts corresponding to the right screw part and the left screw part and advancing side by side by the rotation of the respective screw parts; and a tuning stem having a driven gear engaged with the reduction gear, and elongating to a direction orthogonal to the rotating shaft. The unit is arranged by a plurality of sets in parallel, and the tuning stems in the respective units are connected by a joint. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は金属及び非金属材の各種加工に用いられるプレスの駆動装置に関する。   The present invention relates to a drive device for a press used for various kinds of processing of metal and nonmetal materials.

金属及び非金属材を塑性加工する手段としてプレスが汎用されている。こうしたプレスとして、新素材や成形法の開発などに呼応すべく、回転数やトルクの自在な制御特性を持つサーボモータを駆動源とするプレスが実用化されつつあり、高性能な加工が期待されているが、実装形のサーボモータの容量はいまだ小さいので、大型プレスへの応用が困難であるという問題があった。
そこで、本出願人は、特開平２００１−３００７７８号において、クラウンからプレスルームにスクリュー軸を垂下させそのスクリュー軸をクラウン上部に設置したサーボモータ・減速機で駆動させるようにし、スクリュー軸の中間にナットを含む昇降体を取り付け、これとクラウン及びスライド間をリンク機構で結んだリンク式サーボプレスを提案した。 A press is widely used as a means for plastic working a metal and a non-metallic material. In order to respond to the development of new materials and molding methods, presses that use servo motors with free speed and torque control characteristics are being put into practical use as such presses, and high-performance processing is expected. However, since the capacity of the mounted servo motor is still small, there is a problem that it is difficult to apply to a large press.
Therefore, in Japanese Patent Application Laid-Open No. 2001-300778, the present applicant suspends the screw shaft from the crown into the press room and drives the screw shaft with a servo motor / reduction gear installed at the top of the crown. We proposed a link-type servo press in which an elevating body including a nut was attached and the crown and slide were connected by a link mechanism.

しかし、先行技術では、クラウンに垂直方向に取り付けられたスクリュー軸の長さがプレスの高さに影響を及ぼし、スライドストロークが長くなるのに伴ってスクリュー軸が長くなり、それによりプレスの全高が大となり、工場内に据付できない場合が生ずる問題があった。
また、スクリュー軸のねじにリンク機構とスライドの重量が直接かかるうえに、スクリュー軸とその駆動モータ類を高所で組み立てなければならないので、プレス製作の作業性が悪くなり、特に大型プレスではスクリュー軸とその駆動モータ類も大型になるのでなおさらであった。 However, in the prior art, the length of the screw shaft attached to the crown in the vertical direction affects the height of the press, and as the slide stroke becomes longer, the screw shaft becomes longer, which increases the overall height of the press. There was a problem that it might become impossible to install in the factory.
In addition, the weight of the link mechanism and the slide is directly applied to the screw of the screw shaft, and the screw shaft and its drive motor must be assembled at a high place, so that the workability of press production is deteriorated. This was especially true because the shaft and its drive motors were also large.

他の提案として、特開２００４−３３７９５９号公報にトランスファープレスが開示されている。この先行技術においては、クラウンの左右にサーボモータを設置し、左右のサーボモータでそれぞれ送りスクリュウを駆動し、それぞれのスクリュウに螺合したナットを有するキャリアを移動させ、キャリアと連結したリンク機構の屈伸でプランジャ上下動させるようにしている。   As another proposal, a transfer press is disclosed in Japanese Patent Application Laid-Open No. 2004-337959. In this prior art, servo motors are installed on the left and right sides of the crown, the feed screws are driven by the left and right servo motors, the carriers having nuts screwed to the respective screws are moved, and the link mechanism connected to the carriers. The plunger is moved up and down by bending and stretching.

しかしこの先行技術では、サーボモータ、送りスクリュウ、キャリアからなる駆動機構がプレスの左右で独立しているので、サーボモータの同期制御が変調をきたした場合、たとえばコントローラのトラブルや制御ソフトの故障が起きたときに、スライドの平衡昇降動が行われなくなり、スライドが傾いてギブを破損したり、傾いた状態でロックされたり、落下して金型を破損したりするなどの大きなトラブルを発生させる危険があった。
特開平２００１−３００７７８号公報 特開２００４−３３７９５９号公報 However, in this prior art, the drive mechanism consisting of the servo motor, feed screw, and carrier is independent on the left and right sides of the press, so if the servo motor's synchronous control is modulated, for example, a controller trouble or control software failure When waking up, the slide does not move up and down in balance, causing the slide to tilt and break the gib, lock in the tilted state, or fall and damage the mold. There was danger.
Japanese Patent Laid-Open No. 2001-300778 JP 2004-337959 A

本発明は上記のような従来の問題点を除去するためになされたもので、その目的とするところは、駆動容量が大きく大型のプレスに好適であるうえにスライドの平衡度が良好であり、万一、コントローラのトラブルや制御ソフトの故障が起きたときでもフレームや金型の破損などのトラブル発生を回避できる安全性の高いプレス駆動装置を提供することにある。
本発明は絞り加工、抜き加工、順送プレスなどに好適であるが、これらに限定されるものではない。 The present invention has been made in order to eliminate the above-described conventional problems, and the object of the present invention is suitable for a large press having a large driving capacity and a good balance of slides. In the unlikely event that a controller trouble or control software failure occurs, it is an object of the present invention to provide a highly safe press driving device that can avoid occurrence of troubles such as breakage of a frame or a mold.
The present invention is suitable for drawing, punching, progressive press and the like, but is not limited thereto.

上記目的を達成するため第１発明の駆動装置は、ベッドに対向するスライドを昇降するための駆動装置であって、該駆動装置が、左ねじ部と右ねじ部を対称的に有し中間部が減速歯車に固着された回転軸と、前記減速歯車を駆動するサーボモータと、前記左ねじ部と右ねじ部に対応する部位に設置され前記各ねじ部の回転で並進される左右の移動体と、前記減速歯車に噛み合う従動歯車を有して前記回転軸と直交する方向に延びる同調軸を備え、かかるユニットが並列に複数セット配され、各ユニットの同調軸が継手により連結されていることを特徴としている。   In order to achieve the above object, a drive device according to a first aspect of the present invention is a drive device for raising and lowering a slide facing a bed, the drive device symmetrically having a left screw portion and a right screw portion. Are fixed to the reduction gear, a servo motor for driving the reduction gear, and left and right moving bodies that are installed at portions corresponding to the left screw portion and the right screw portion and are translated by the rotation of the screw portions. And a driven gear that meshes with the reduction gear, and a tuning shaft that extends in a direction perpendicular to the rotation shaft, a plurality of such units are arranged in parallel, and the tuning shafts of each unit are connected by a joint. It is characterized by.

また、第２発明の駆動装置は、ベッドに対向するスライドを昇降するための駆動装置であって、該駆動装置が、左ねじ部と右ねじ部を対称的に有し中間部が減速歯車に固着された回転軸と、前記減速歯車を駆動するサーボモータと、前記左ねじ部と右ねじ部に対応する部位に設置され前記各ねじ部の回転で並進される左右の移動体と、前記減速歯車に噛み合う駆動歯車を有して前記回転軸と直交する方向に延び継手により連結された同調軸を備え、かかるユニットが並列に複数セット配されていることを特徴としている。 The drive device of the second invention is a drive device for raising and lowering a slide facing the bed, the drive device symmetrically having a left screw portion and a right screw portion, and an intermediate portion serving as a reduction gear. A fixed rotating shaft; a servomotor that drives the reduction gear; a left and right movable body that is installed in a portion corresponding to the left screw portion and the right screw portion and is translated by the rotation of each screw portion; It has a drive shaft that meshes with the gear, has a tuning shaft that extends in a direction orthogonal to the rotation shaft and is connected by a joint, and a plurality of such units are arranged in parallel.

第１、第２発明きには、各ユニットにサーボモータを備えているので容量が増し、大型プレスに対応することができ、各ユニットの中央に位置するサーボモータの駆動により左右方向に延びる共通回転軸を駆動して移動体を対称的に並進させるので、左右方向での同調性が良好であり、しかも、前記回転軸と直交する方向に延びる同調軸を備え、それが回転軸と同調して回転を各ユニットに伝達するので、前後方向での同調性もよくなり、スライドの平衡精度を良好にすることができ、これらにより高性能、高精度、省エネルギー型のプレスとなし得る。   In the first and second inventions, each unit is equipped with a servo motor, so that the capacity is increased and it can be used for a large press, and it is common to extend in the left-right direction by driving the servo motor located at the center of each unit. Since the rotating body is driven to translate the moving body symmetrically, the tuning in the left-right direction is good, and a tuning axis extending in a direction perpendicular to the rotating axis is provided, which synchronizes with the rotating axis. Since the rotation is transmitted to each unit, the synchronism in the front-rear direction is also improved, and the balance accuracy of the slide can be improved, thereby achieving a high-performance, high-precision, energy-saving press.

しかも、万一、サーボモータやその制御系に不具合が発生した場合にも、各ユニットが同調軸でつながっているので、速度が低下することはあっても故障していないサーボ系によりスライドの平衡移動を維持することができる。したがって安全性を高いものとすることができる。   In addition, in the unlikely event that a malfunction occurs in the servo motor or its control system, the units are connected via the tuning axis, so even if the speed decreases, the balance of the slide is maintained by the servo system that is not broken. You can keep moving. Therefore, safety can be increased.

また、第１発明では、各ユニットの駆動歯車をサーボモータで駆動し、同調軸は減速歯車と噛み合う従動歯車を有しているため、ユニットを３基以上並列して同期駆動させることができ、大型プレスやスライドを複数有するプレスに適用できる。
第２発明は各サーボモータの出力軸を同調軸とし、減速歯車と噛み合う駆動歯車としているため、２軸駆動を円滑に行え、かつ構造をコンパクト化できる。 In the first invention, the drive gear of each unit is driven by a servo motor, and the tuning shaft has a driven gear that meshes with the reduction gear, so that three or more units can be synchronously driven in parallel. It can be applied to a large press or a press having a plurality of slides.
In the second aspect of the invention, the output shaft of each servo motor is used as a tuning shaft, and the drive gear meshes with the reduction gear, so that the two-axis drive can be performed smoothly and the structure can be made compact.

好適には、移動体にはクラウンとスライド間を連結するリンク機構が連結されている。
これによれば、左右対称のリンク機構による下降時および上昇時の高速化，加圧時の力の増大というエネルギー効果により、絞りなどの塑性加工において、小さい容量のモータにより大きな加工能力を得ることができ、同時に高速でスライドを駆動することができるため毎分ストローク数を大きくすることができる。しかもリンク機構が左右一対存し、それらが左右位置に連結され、左右ねじの回転による左右の移動体の並進運動で同期昇降を行なうので、スライドの平衡精度を良好にすることができ、これらにより高性能、高精度、省エネルギー型のプレスとなし得る。 Preferably, a link mechanism for connecting the crown and the slide is connected to the moving body.
According to this, a large processing capacity can be obtained with a small capacity motor in plastic processing such as drawing due to the energy effect of speeding up and down at the time of lowering and rising by a symmetrical link mechanism and increasing force at the time of pressurization. Since the slide can be driven at a high speed at the same time, the number of strokes per minute can be increased. In addition, there are a pair of left and right link mechanisms, they are connected to the left and right positions, and the vertical movement of the left and right moving bodies by the rotation of the left and right screws is synchronized, so that the balance accuracy of the slide can be improved. A high-performance, high-precision, energy-saving press can be achieved.

リンク機構は、上端が移動体に枢着された第１リンクと、上端がクラウンにつながった第２リンクと、下端がスライドの上部につながった第３リンクを備えており、それら第１リンク、第２リンクの下端と第３リンクの上端が集合して枢着されている。
これによれば、リンク機構の構造が簡単で、確実にスライドのドライブを行なえるというすぐれた効果が得られる。 The link mechanism includes a first link whose upper end is pivotally attached to the moving body, a second link whose upper end is connected to the crown, and a third link whose lower end is connected to the upper part of the slide. The lower end of the second link and the upper end of the third link are assembled and pivoted.
According to this, the structure of a link mechanism is simple, and the outstanding effect that a slide drive can be performed reliably is acquired.

以下添付図面を参照して本発明の実施例を説明する。
図１は本発明による駆動装置を適用したプレスの一例を示している。図２は本発明による駆動装置を適用したプレスの他の例である大型プレスを示している。
図１において、１はプレスフレームであり、ベッド１ａの四隅にコラム１ｂを立設し、コラム１ｂの上部にクラウン(コラムヘッド)１ｃを剛結し、コラム１ｂ，１ｂには図示しないギブを設けており、前記ギブには、金型を取り付けるスライド１ｄが摺動可能に取り付けられている。ベッド１ａにはスライド１ｄの金型と組をなす金型を取り付けるボルスタが配されるようになっている。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 shows an example of a press to which a drive device according to the present invention is applied. FIG. 2 shows a large-sized press which is another example of a press to which the drive device according to the present invention is applied.
In FIG. 1, reference numeral 1 denotes a press frame, in which columns 1b are erected at the four corners of a bed 1a, a crown (column head) 1c is rigidly connected to the upper portion of the column 1b, and gibbles (not shown) are provided on the columns 1b and 1b. A slide 1d for attaching a mold is slidably attached to the give. The bed 1a is provided with a bolster for attaching a mold that forms a pair with the mold of the slide 1d.

図２においては、前記図１のプレスフレーム1が複数(この例では３基)隣接して据付けられている。この例では、スライド１ｄは共通の1基であるが、単位プレスフレームごとにそれぞれ配置されていてもよい。   In FIG. 2, a plurality of (three in this example) press frames 1 of FIG. 1 are installed adjacent to each other. In this example, the slide 1d is a common one, but may be arranged for each unit press frame.

２は前記クラウン１ｃに組み込まれた本発明による駆動装置であり、駆動装置２は、図1では２基の駆動ユニット２Ａ，２Ａを並列状に配置して構成されている。図２では３基の駆動ユニット２Ａ，２Ａを並列状に配置して構成されている。   Reference numeral 2 denotes a drive device according to the present invention incorporated in the crown 1c, and the drive device 2 is configured by arranging two drive units 2A and 2A in parallel in FIG. In FIG. 2, three drive units 2A and 2A are arranged in parallel.

図３と図４は駆動ユニット２Ａの第１実施例を示しており、サーボモータ８を含む中央部の駆動器３と、これから左右に延在する回転軸４と、前記回転軸４と直交するように駆動器３から前後方向に延びる同調軸５と、前記回転軸４に左右対称に取り付けられた移動体６、６´と、それら移動体６、６´にそれぞれ一端が連結されたリンク機構７，７´を備えている。   FIGS. 3 and 4 show a first embodiment of the drive unit 2A. The drive unit 3 at the center including the servo motor 8, the rotation shaft 4 extending left and right from this, and the rotation shaft 4 are orthogonal to each other. As described above, the tuning shaft 5 extending in the front-rear direction from the driver 3, the moving bodies 6 and 6 ′ that are symmetrically attached to the rotating shaft 4, and the link mechanisms having one ends connected to the moving bodies 6 and 6 ′, respectively. 7, 7 '.

前記駆動器３は、ハウジング３０内に前記回転軸４と固着された径の大きな減速歯車３ａを軸受で回転自由に支持させており、該減速歯車３ａには駆動歯車３ｂを噛み合せている。該駆動歯車３ｂはサーボモータたとえばＡＣサーボモータ８の出力軸が結合されている。この例では、減速歯車３ａとしてウオームホイールが、駆動歯車３ｂとしてウオームが用いられている。
前記回転軸４は左右に所要長さ延在し、端部付近には左ねじ４ａと右ねじ４ｂが設けられており、それら左ねじ４ａと右ねじ４ｂに移動体６Ａ、６Ｂに内蔵されているナットがそれぞれ螺合している。左ねじ４ａと右ねじ４ｂはたとえばボールねじからなっている。 The drive unit 3 supports a reduction gear 3a having a large diameter fixed to the rotary shaft 4 in a housing 30 with a bearing so as to freely rotate. The reduction gear 3a meshes with a drive gear 3b. The drive gear 3b is coupled to the output shaft of a servomotor, for example, an AC servomotor 8. In this example, a worm wheel is used as the reduction gear 3a and a worm is used as the drive gear 3b.
The rotary shaft 4 extends to the left and right for a required length, and is provided with a left screw 4a and a right screw 4b near the ends. The left screw 4a and the right screw 4b are built in the moving bodies 6A and 6B. Each nut is screwed together. The left screw 4a and the right screw 4b are, for example, ball screws.

前記移動体６、６´はクラウン１ｃに設けたレールなどのガイド９，９に摺動可能に搭載され、回転せずに並進運動だけ行われるようになっている。そして、移動体６、６´の適所には、リンク機構7，7´との連結部６０，６０が設けられている。   The moving bodies 6 and 6 'are slidably mounted on guides 9 and 9 such as rails provided on the crown 1c so that only translational movement is performed without rotating. And the connection parts 60 and 60 with the link mechanism 7 and 7 'are provided in the suitable place of the moving bodies 6 and 6'.

前記同調軸５はこの例では駆動歯車３ｂと１８０度対称位置にあって、減速歯車３ａに噛み合う従動歯車５ａを有し、軸部が軸受けによって駆動器３のハウジング３０に支承されている。各ユニット２Ａ，２Ａの同調軸５、５は継手５０によって相互につながっている。   In this example, the tuning shaft 5 is positioned 180 degrees symmetrical to the drive gear 3b, has a driven gear 5a that meshes with the reduction gear 3a, and the shaft portion is supported on the housing 30 of the driver 3 by a bearing. The tuning shafts 5 and 5 of the units 2A and 2A are connected to each other by a joint 50.

リンク機構７，７´は前記移動体６、６´の出力を横方向から縦方向に変換増幅してスライド１ｄに伝達するため左右対称となっており、クラウン１ｃの左右領域とスライド１ｄの間の空間に配されている。
各リンク機構７，７´は、上端が前記移動体６、６´の連結部６０に枢着された第１リンク７ａと、上端がクラウン１ｃにブラケット状の支持部を介してつながった第２リンク７ｂと、下端がスライド１ｄの上部にブラケット状の支持部を介してつながった第３リンク７ｃを備えており、それら第１リンク、第２リンクの下端と第３リンクの上端は集合部体(軸または三角板など)７ｄに枢着されている。
なお、前記リンク機構７，７´は、それぞれ移動体６、６´の前後に配されて対をなしていてもよい。 The link mechanisms 7 and 7 'are bilaterally symmetric in order to convert and amplify the output of the moving bodies 6 and 6' from the horizontal direction to the vertical direction and transmit it to the slide 1d, and between the left and right regions of the crown 1c and the slide 1d. It is arranged in the space.
Each link mechanism 7, 7 ′ has a first link 7 a whose upper end is pivotally attached to the connecting portion 60 of the moving body 6, 6 ′, and a second link whose upper end is connected to the crown 1 c via a bracket-like support portion. The link 7b is provided with a third link 7c having a lower end connected to an upper portion of the slide 1d via a bracket-like support portion, and the lower ends of the first link, the second link, and the upper end of the third link are aggregate parts. It is pivotally attached to 7d (shaft or triangular plate, etc.).
The link mechanisms 7 and 7 'may be arranged in pairs before and after the moving bodies 6 and 6', respectively.

第１実施例においては、図１のように２基の駆動ユニット２Ａ，２Ａがクラウン１ｃに並列状に設置され、同調軸５によって連携されている。スライド１ｄは各駆動ユニット２Ａ，２Ａのリンク機構７，７´によって前後４箇所が吊持されるので安定している。 In the first embodiment, as shown in FIG. 1, two drive units 2 </ b> A and 2 </ b> A are installed in parallel with the crown 1 c and are linked by a tuning shaft 5. The slide 1d is stable because the front and rear four places are suspended by the link mechanisms 7, 7 'of the drive units 2A, 2A.

プレス作業を行うにあたっては、駆動ユニット２Ａ，２Ａの各サーボモータ８、８を同期駆動するものであり、これにより駆動歯車３ｂ、３ｂがそれぞれ駆動するので、噛み合っている減速歯車３ａが回転され、各駆動ユニット２Ａ，２Ａにおいてそれぞれ左右に延びている回転軸４、４が同期回転する。この回転軸４、４の回転は減速歯車３ａに噛み合っている従動歯車５ａと同調軸５を介して各駆動ユニット２Ａ，２Ａに伝達されるので、確実正確な同調が図られる。
回転軸５には逆ねじ４ａ，４ｂが設けられているので、それらとはまりあったナット及びこれと一体の移動体６、６´が左右対称に水平方向の直線運動を行なう。さらに移動体６、６´に連結した左右対称のリンク機構７、７´を介して出力が増幅され、スライド１ｄに垂直方向の出力が伝達される。これでワークの塑性加工が行なわれる。 In performing the press work, the servo motors 8 and 8 of the drive units 2A and 2A are synchronously driven. As a result, the drive gears 3b and 3b are respectively driven, so that the meshing reduction gear 3a is rotated, In each of the drive units 2A and 2A, the rotating shafts 4 and 4 extending to the left and right rotate synchronously. The rotation of the rotary shafts 4 and 4 is transmitted to the drive units 2A and 2A via the driven gear 5a meshed with the reduction gear 3a and the tuning shaft 5, so that accurate and accurate tuning is achieved.
Since the rotating shaft 5 is provided with the reverse screws 4a and 4b, the nuts fitted with them and the movable bodies 6 and 6 'integrated therewith perform horizontal linear movement symmetrically. Further, the output is amplified through the symmetrical link mechanisms 7 and 7 'connected to the moving bodies 6 and 6', and the output in the vertical direction is transmitted to the slide 1d. Thus, plastic working of the workpiece is performed.

加工行程完了とともに、サーボモータ８，８を逆転すれば、回転軸４，４の逆回転で移動体６、６´は後退させられ、左右のリンク機構７、７´が屈折されるので、スライド１ｄは上限位置に戻される。以下、サーボモータ８，８の正転、逆転を繰り返すことでスライド１ｄ連続直線往復運動し、連続加工が行われる。
本発明では回転軸４の回転と左右ねじの回転と左右の移動体６，６´の並進運動で左右のリンク機構７、７´が同期的に屈折・伸長運動を行うので、スライド１ｄの左右方向での昇降バランスがとれ、しかも、前後方向では回転軸４、４の回転が同調軸５，５で各駆動ユニット２Ａ，２Ａに伝達されるので、スライド１ｄの前後方向での昇降バランスがとれ、スライド１ｄは、終始、良好な平衡度をを保って昇降する。 If the servo motors 8 and 8 are reversed when the machining process is completed, the moving bodies 6 and 6 'are retracted by the reverse rotation of the rotary shafts 4 and 4, and the left and right link mechanisms 7 and 7' are refracted. 1d is returned to the upper limit position. Thereafter, by repeating forward and reverse rotations of the servomotors 8 and 8, the slide 1d continuously linearly reciprocates, and continuous machining is performed.
In the present invention, the left and right link mechanisms 7 and 7 'synchronously refract and extend by the rotation of the rotating shaft 4, the rotation of the left and right screws, and the translation of the left and right moving bodies 6 and 6'. In addition, since the rotation of the rotary shafts 4 and 4 is transmitted to the drive units 2A and 2A through the tuning shafts 5 and 5 in the front-rear direction, the balance in the front-rear direction of the slide 1d can be achieved. The slide 1d moves up and down while maintaining a good balance throughout.

本発明はサーボモータ８を複数台使用しているため、容量を増加することができ、しかも前記した各駆動ユニット２Ａ，２Ａの回転軸４、４による左右方向の同調と同調軸５による前後方向の同調が行われるので、スライド下限位置での圧力保持を自在かつ確実に行なうことができ、ストローク、速度および加圧を自在に制御することができ、ストロークを成形条件に適した最小ストロークを設定できるので、ストローク数を向上することができる。また、左右のリンク機構７、７´との協働により下死点ないしその近傍での圧力保持を自在に行なうことができ、スプリングバックに対する対処が容易となるため、高性能なプレスが構成できる。
第１実施例においては、同調軸５が従動軸として各駆動ユニット２Ａ，２Ａを結んでいるので、駆動ユニットの数を自由に増すことができ、図１の場合はもとより図２のような大型のプレスに簡易に対応することができる。 Since the present invention uses a plurality of servo motors 8, the capacity can be increased, and the left and right direction tuning by the rotation shafts 4 and 4 of the drive units 2 A and 2 A and the front and rear direction by the tuning shaft 5 are possible. The pressure at the lower slide position can be held freely and reliably, and the stroke, speed, and pressurization can be controlled freely, and the stroke is set to the minimum stroke suitable for the molding conditions. As a result, the number of strokes can be improved. Further, the cooperation with the left and right link mechanisms 7 and 7 'can freely hold the pressure at the bottom dead center or in the vicinity thereof, and can easily cope with the spring back, so that a high-performance press can be configured. .
In the first embodiment, the tuning shaft 5 is connected to each drive unit 2A, 2A as a driven shaft, so the number of drive units can be increased freely. It is possible to easily cope with the press.

図５は本発明の駆動ユニット２Ａの第２実施例を示しており、この実施例は、図１のような短台プレスに好適である。
駆動ユニット２Ａは、サーボモータ８を含む中央部の駆動器３と、これから左右に延在する回転軸４と、前記回転軸４と直交するように駆動器３から前後方向に延びる同調軸５と、前記回転軸４に左右対称に取り付けられた移動体６、６´と、それら移動体６、６´にそれぞれ一端が連結されたリンク機構7，7´を備えている点は第１実施例と同様であるが、この実施例では、サーボモータ８が同調軸５に連結され、同調軸５に減速歯車３ａと噛み合う駆動歯車５ｂが固着されている。したがって、この実施例では同調軸は駆動軸を兼ねている。
他は第１実施例と同様の構成であるから、同じ部分に同じ符号を付し、説明は援用する。 FIG. 5 shows a second embodiment of the drive unit 2A of the present invention, and this embodiment is suitable for a short press as shown in FIG.
The driving unit 2A includes a central driving unit 3 including a servo motor 8, a rotating shaft 4 extending left and right from the center, and a tuning shaft 5 extending in the front-rear direction from the driving unit 3 so as to be orthogonal to the rotating shaft 4. The first embodiment is provided with moving bodies 6, 6 'mounted symmetrically on the rotating shaft 4 and link mechanisms 7, 7' having one ends connected to the moving bodies 6, 6 ', respectively. In this embodiment, the servo motor 8 is connected to the tuning shaft 5, and a driving gear 5 b that meshes with the reduction gear 3 a is fixed to the tuning shaft 5. Therefore, in this embodiment, the tuning shaft also serves as the drive shaft.
Since others are the structure similar to 1st Example, the same code | symbol is attached | subjected to the same part and description is used.

第２実施例においては、各駆動ユニット２Ａ，２Ａのサーボモータ８，８の駆動により同調軸５の駆動歯車５ｂ、５ｂが回転して減速歯車３ａ、３ａが回転され、各駆動ユニット２Ａ，２Ａにおいてそれぞれ左右に延びている回転軸４、４が同期回転する。この回転軸４、４の回転は減速歯車３ａに噛み合っている従動歯車５ａと同調軸５を介して各駆動ユニット２Ａ，２Ａに伝達されるので、確実正確な同調が図られる。他の作用は第１実施例と同様である。
この実施例では同調軸５が駆動軸であるため駆動ユニットの数は２基に限られ、図１の態様になるものの、エネルギーの伝達効率がよく、また従動軸を省略できるのでコンパクトになる。 In the second embodiment, the drive gears 5b and 5b of the tuning shaft 5 are rotated by the drive of the servo motors 8 and 8 of the drive units 2A and 2A, and the reduction gears 3a and 3a are rotated, so that the drive units 2A and 2A are rotated. , The rotating shafts 4 and 4 extending left and right respectively rotate in synchronization. The rotation of the rotary shafts 4 and 4 is transmitted to the drive units 2A and 2A via the driven gear 5a meshed with the reduction gear 3a and the tuning shaft 5, so that accurate and accurate tuning is achieved. Other operations are the same as in the first embodiment.
In this embodiment, since the tuning shaft 5 is the drive shaft, the number of drive units is limited to two, and although the embodiment shown in FIG. 1 is used, the energy transmission efficiency is good and the driven shaft can be omitted, resulting in a compact size.

そして、第１実施例と第２実施例において、運転中に電気系統の故障など何らかの理由でコントローラのトラブルが生じたり、制御ソフトが異常をきたしたような場合でも、各駆動ユニット２Ａ，２Ａの左右方向は高剛性の回転軸４，４で同調が維持され、前後方向は高剛性の同調軸５，５で同調が維持される。また、複数の駆動ユニット２Ａ，２Ａのうちあるもののサーボモータ８が駆動を停止してしまっても、駆動中のサーボモータ８の駆動力が同調軸５，５によって各駆動ユニット２Ａ，２Ａの回転軸に伝達されるので、速度は低下してもスライド１ｄ平衡運動は維持される。したがって、スライドの傾き、ギブへの噛み込み、あるいは落下といった大きな故障の発生を回避することができ、安全性を高いものとすることができる。   In the first embodiment and the second embodiment, even if a trouble of the controller occurs for some reason such as a failure of the electric system or the control software becomes abnormal during operation, the drive units 2A and 2A In the left-right direction, synchronization is maintained by the high-rigidity rotating shafts 4, 4, and in the front-back direction, synchronization is maintained by the high-rigidity tuning shafts 5, 5. Even if the servo motor 8 of one of the plurality of drive units 2A and 2A stops driving, the driving force of the servo motor 8 being driven is rotated by the tuning shafts 5 and 5 to rotate the drive units 2A and 2A. Since it is transmitted to the shaft, the slide 1d equilibrium motion is maintained even if the speed is reduced. Therefore, it is possible to avoid the occurrence of a major failure such as the inclination of the slide, biting into the give, or dropping, and the safety can be improved.

なお、移動体６，６´の左右のリンク機構７、７´に対する連結部６０は、図６(ａ)のように下部でもよい。
また減速歯車３ａと、駆動歯車３ｂ、従動歯車５ａ、駆動歯車５ｂは、実施例のようにウオームホイールとウオームギヤの組み合わせに限られず、ベベルギヤ、ハイボイドギヤ、フェースギヤ、かさ歯車などであってもよい。 In addition, the connection part 60 with respect to the link mechanisms 7 and 7 'on either side of the moving bodies 6 and 6' may be a lower part like Fig.6 (a).
The reduction gear 3a, the drive gear 3b, the driven gear 5a, and the drive gear 5b are not limited to the combination of the worm wheel and the worm gear as in the embodiment, and may be a bevel gear, a high void gear, a face gear, a bevel gear, or the like.

本発明によるプレス駆動装置を適用したプレスの一例を示す斜視図図である。It is a perspective view which shows an example of the press to which the press drive device by this invention is applied. 本発明によるプレス駆動装置を適用したプレスの他例を示す斜視図図である。It is a perspective view which shows the other example of the press to which the press drive device by this invention is applied. 本発明によるプレス駆動装置の第１実施例を示す斜視図である。1 is a perspective view showing a first embodiment of a press drive device according to the present invention. 図３の駆動器の機構を示す斜視図である。It is a perspective view which shows the mechanism of the driver of FIG. 本発明によるプレス駆動装置の第２実施例を駆動器のケーシングを除去して示す斜視図である。It is a perspective view which removes the casing of a driver and shows a 2nd example of a press drive device by the present invention. (ａ)(ｂ)は移動体の他の例を示す斜視図である。(a) (b) is a perspective view which shows the other example of a moving body.

符号の説明Explanation of symbols

１ｃ クラウン
１ｄ スライド
３ 駆動器
３ａ 減速歯車
３ｂ 駆動歯車
４ 回転軸
５ 同調軸
５ａ 従動歯車
５ｂ 駆動歯車
６，６´ 移動体
７、７´ リンク機構
５０ 継手 1c Crown 1d Slide 3 Driver 3a Reduction gear 3b Drive gear 4 Rotating shaft 5 Tuning shaft 5a Driven gear 5b Drive gear 6, 6 'Moving body 7, 7' Link mechanism 50 Joint

Claims (4)

ベッドに対向するスライドを昇降するための駆動装置であって、該駆動装置が、左ねじ部と右ねじ部を対称的に有し中間部が減速歯車に固着された回転軸と、前記減速歯車を駆動するサーボモータと、前記左ねじ部と右ねじ部に対応する部位に設置され前記各ねじ部の回転で並進される左右の移動体と、前記減速歯車に噛み合う従動歯車を有して前記回転軸と直交する方向に延びる同調軸を備え、かかるユニットが並列に複数セット配され、各ユニットの同調軸が継手により連結されていることを特徴とするプレスの駆動装置。   A drive device for raising and lowering a slide facing a bed, wherein the drive device has a left screw portion and a right screw portion symmetrically, and an intermediate portion fixed to a reduction gear, and the reduction gear A servo motor that drives the left and right moving parts, and left and right moving bodies that are installed at portions corresponding to the left and right screw parts, and a driven gear that meshes with the reduction gear. A press drive device comprising a tuning shaft extending in a direction perpendicular to the rotation axis, a plurality of such units arranged in parallel, and the tuning shafts of each unit being connected by a joint. ベッドに対向するスライドを昇降するための駆動装置であって、該駆動装置が、左ねじ部と右ねじ部を対称的に有し中間部が減速歯車に固着された回転軸と、前記減速歯車を駆動するサーボモータと、前記左ねじ部と右ねじ部に対応する部位に設置され前記各ねじ部の回転で並進される左右の移動体と、前記減速歯車に噛み合う駆動歯車を有して前記回転軸と直交する方向に延び継手により連結された同調軸を備え、かかるユニットが並列に複数セット配されていることを特徴とするプレスの駆動装置。   A drive device for raising and lowering a slide facing a bed, wherein the drive device has a left screw portion and a right screw portion symmetrically, and an intermediate portion fixed to a reduction gear, and the reduction gear A servo motor that drives the left and right screw parts, a left and right moving body that is installed in a portion corresponding to the left screw part and the right screw part, and a drive gear that meshes with the reduction gear. A press driving device comprising a tuning shaft extending in a direction orthogonal to a rotation shaft and connected by a joint, and a plurality of such units are arranged in parallel. 移動体にはクラウンとスライド間を連結するリンク機構が連結されている請求項１または請求項２に記載のプレスの駆動装置。   The press drive device according to claim 1 or 2, wherein a link mechanism for connecting the crown and the slide is connected to the movable body. リンク機構は、上端が移動体に枢着された第１リンクと、上端がクラウンにつながった第２リンクと、下端がスライドの上部につながった第３リンクを備えており、それら第１リンク、第２リンクの下端と第３リンクの上端が集合して枢着されている請求項３に記載のプレスの駆動装置。 The link mechanism includes a first link whose upper end is pivotally attached to the moving body, a second link whose upper end is connected to the crown, and a third link whose lower end is connected to the upper part of the slide. The press drive device according to claim 3, wherein the lower end of the second link and the upper end of the third link are assembled and pivoted.
JP2005265369A 2005-09-13 2005-09-13 Press drive device Expired - Fee Related JP4880956B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010023056A (en) * 2008-07-16 2010-02-04 Hitachi Zosen Fukui Corp Press machine
CN101863132A (en) * 2010-05-21 2010-10-20 清华大学 Mechanical servo drive main transmission device for digital turrent punch press
CN110524349A (en) * 2019-08-24 2019-12-03 张家港海运金属冷挤压有限公司 A kind of special processing unit (plant) and method of double end abnormity orifice

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004009066A (en) * 2002-06-04 2004-01-15 Amino:Kk Press for deep-drawing
JP2005118792A (en) * 2003-10-14 2005-05-12 Amino:Kk Pressing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004009066A (en) * 2002-06-04 2004-01-15 Amino:Kk Press for deep-drawing
JP2005118792A (en) * 2003-10-14 2005-05-12 Amino:Kk Pressing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010023056A (en) * 2008-07-16 2010-02-04 Hitachi Zosen Fukui Corp Press machine
CN101863132A (en) * 2010-05-21 2010-10-20 清华大学 Mechanical servo drive main transmission device for digital turrent punch press
CN110524349A (en) * 2019-08-24 2019-12-03 张家港海运金属冷挤压有限公司 A kind of special processing unit (plant) and method of double end abnormity orifice

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