JP2006122997A - Forming method using servo press - Google Patents

Forming method using servo press Download PDF

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Publication number
JP2006122997A
JP2006122997A JP2004318290A JP2004318290A JP2006122997A JP 2006122997 A JP2006122997 A JP 2006122997A JP 2004318290 A JP2004318290 A JP 2004318290A JP 2004318290 A JP2004318290 A JP 2004318290A JP 2006122997 A JP2006122997 A JP 2006122997A
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Prior art keywords
slide
dead center
servo press
piercing
bottom dead
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JP4347197B2 (en
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Yoshinori Shibayama
義則 柴山
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/16—Additional equipment in association with the tools, e.g. for shearing, for trimming
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • 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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/001—Shaping combined with punching, e.g. stamping and perforating

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a forming method using a servo press by which load on equipment in composite working is reduced and the total working time is shortened. <P>SOLUTION: The forming method performs the composite working by an upper die 2 and a lower die 6 by using a servo press, wherein a slide 1 is lowered and pressed and held at the bottom dead center to draw a work W, then the slide 1 is elevated, a pierce punch 11 is protruded, in the elevating operation of the slide 1, from a forming face of the upper die 2 by an air cylinder 14 provided on the upper die 2, and after the slide 1 is elevated to the predetermined position, the slide 1 is lowered again, and the drawn work W is pierced. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、サーボプレスを用いて上型と下型により複合加工を行うサーボプレスを用いた成形方法に関する。   The present invention relates to a molding method using a servo press that performs combined processing using an upper mold and a lower mold using a servo press.

近年、ＡＣサーボモータを用いたサーボプレスが普及してきており、その高生産性が注目されている。サーボプレスは、サーボ制御によりスライドを自由かつ高精度に動作させることが可能で、加工速度、ストローク、加圧力を所望な値に制御することができる。また、リンク機構の採用により小出力のモータで大きな成形力を発生することができるようになった。   In recent years, servo presses using AC servomotors have become widespread, and their high productivity has attracted attention. The servo press can operate the slide freely and with high precision by servo control, and can control the processing speed, stroke, and applied pressure to desired values. In addition, a large molding force can be generated with a small output motor by adopting a link mechanism.

そして、サーボプレスを適用して、スライドが上限位置から次に上限位置に戻るまでの間、上限位置より低い所定の待機位置と、この待機位置より低い所定の下限位置との間で、スライドを所定回数反復駆動して多段モーション加工を行う際に、下限位置、待機位置、下限位置での加圧時間、待機位置での停止時間、下限位置での加圧力などの加工条件を、各段毎に自由に設定して、多工程加工や複合加工を行う装置及びその方法が提案されている（例えば、特許文献１参照）。   Then, by applying the servo press, the slide is moved between a predetermined standby position lower than the upper limit position and a predetermined lower limit position lower than the standby position until the slide returns from the upper limit position to the next upper limit position. When performing multi-stage motion machining by repeatedly driving a predetermined number of times, machining conditions such as the lower limit position, standby position, pressurization time at the lower limit position, stop time at the standby position, pressurizing force at the lower limit position are set for each stage. An apparatus and a method for performing multi-step machining and complex machining by freely setting them to have been proposed (for example, see Patent Document 1).

特開平１０−２７７７９７号公報Japanese Patent Laid-Open No. 10-277797

しかし、特許文献１に開示された装置及びその方法においては、多段モーション加工が単に下降領域、加圧工程、上昇領域を繰り返すだけであり、各段の加圧工程では必ず所定時間だけ加圧力を保持することになる。
従って、この装置及びその方法を用いて絞り加工後に、下死点でワークを加圧しスライドを停止した状態でワークにピアス加工を行うと、加圧力保持によるモータへの負荷、下死点付近でのフレームの伸び、温度上昇に起因する金型の変形などの問題が生じる虞がある。 However, in the apparatus and method disclosed in Patent Document 1, the multi-stage motion processing simply repeats the descending region, the pressurizing step, and the ascending region. Will hold.
Therefore, after drawing using this device and its method, when the workpiece is pierced with the workpiece pressed at the bottom dead center and the slide stopped, the load on the motor due to the holding of the applied pressure, near the bottom dead center There is a possibility that problems such as the deformation of the mold due to the elongation of the frame and the temperature rise may occur.

本発明は、従来の技術が有するこのような問題点に鑑みてなされたものであり、その目的とするところは、複合加工における設備に対する負荷を軽減し、トータル加工時間を短縮することができるサーボプレスを用いた成形方法を提供しようとするものである。   The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to reduce the load on equipment in complex machining and reduce the total machining time. An object of the present invention is to provide a molding method using a press.

上記課題を解決すべく請求項１に係る発明は、サーボプレスを用いて上型と下型により複合加工を行う成形方法であって、スライドを下降させ下死点で加圧保持してワークに絞り加工を行った後、前記スライドを所定位置まで上昇させて再度下降させると共に、前記上型側に設けた駆動手段によりピアスポンチを前記スライドが再度下死点に到達するまでに前記上型の成形面より突出させ、絞り加工が施された前記ワークにピアス加工を行うものである。   In order to solve the above-mentioned problem, the invention according to claim 1 is a molding method in which a servo press is used to perform composite processing with an upper mold and a lower mold, and the slide is lowered and held at the bottom dead center to pressurize the workpiece. After the drawing process, the slide is raised to a predetermined position and lowered again, and the piercing punch is driven by the driving means provided on the upper mold side until the slide reaches the bottom dead center again. Piercing is performed on the workpiece that is projected from the molding surface and drawn.

以上説明したように本発明によれば、絞り加工後にスライドを下死点から所定位置まで上昇させ、再度下死点まで下降させて、ワークに対して加圧力を保持することなくピアス加工を行うので、モータの負荷が増大したり、金型の温度が上昇して金型が変形したりすることがなく、複合加工におけるトータル加工時間も短縮され、生産性が向上する。   As described above, according to the present invention, after the drawing process, the slide is raised from the bottom dead center to a predetermined position and lowered again to the bottom dead center to perform the piercing without holding the pressurizing force on the workpiece. Therefore, the load on the motor does not increase or the mold temperature rises and the mold is not deformed, and the total machining time in the complex machining is shortened, and the productivity is improved.

以下に本発明の実施の形態を添付図面に基づいて説明する。ここで、図１は本発明に係るサーボプレスを用いた成形方法を実施する装置の概要断面図、図２は孔開け装置の動作状態を示す概要断面図、図３はスライドのストロークと時間の関係図、図４は成形方法の説明図である。   Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a schematic cross-sectional view of an apparatus for performing a molding method using a servo press according to the present invention, FIG. 2 is a schematic cross-sectional view showing an operation state of a punching apparatus, and FIG. FIG. 4 is a diagram for explaining the forming method.

本発明に係るサーボプレスを用いた成形方法を実施する装置は、図１に示すように、スライド１の下面に上型２を取り付け、ベッド３の上方にガイドポスト４を介してボルスタ５が設けられ、更にベッド３の上面に下型（パンチ）６がボルスタ５から突出して配設されている。また、上型２の内部にピアス加工用の孔開け装置１０がスライド１に固定されて収納されている。孔開け装置１０は上型２に固定して設けてもよい。   As shown in FIG. 1, an apparatus for carrying out a molding method using a servo press according to the present invention has an upper mold 2 attached to the lower surface of a slide 1 and a bolster 5 provided above a bed 3 via a guide post 4. Further, a lower die (punch) 6 is provided on the upper surface of the bed 3 so as to protrude from the bolster 5. Also, a piercing device 10 is housed in the upper mold 2 by being fixed to the slide 1. The punching device 10 may be fixed to the upper mold 2.

更に、スライド１を上下方向に駆動すると共に、加工速度、ストローク、加圧力を所望な値に制御することができるサーボプレス（不図示）が設けられている。サーボプレスは、ＡＣサーボモータやＡＣサーボモータを制御する機器などを備えている。   Further, a servo press (not shown) is provided that can drive the slide 1 in the vertical direction and can control the processing speed, stroke, and applied pressure to desired values. The servo press is equipped with an AC servo motor, a device for controlling the AC servo motor, and the like.

孔開け装置１０は、図２に示すように、ピアスポンチ１１と、ピアスポンチ１１を固定するポンチ固定部材１２と、ポンチ固定部材１２を押圧する押圧部材１３と、押圧部材１３をシリンダロッド１４ａの先端に取り付けたエアシリンダ１４と、ピアスポンチ１１、ポンチ固定部材１２、押圧部材１３を案内するハウジング１５からなる。   As shown in FIG. 2, the punching device 10 includes a pierce punch 11, a punch fixing member 12 that fixes the piercing punch 11, a pressing member 13 that presses the punch fixing member 12, and the pressing member 13 of the cylinder rod 14a. It comprises an air cylinder 14 attached to the tip, and a housing 15 for guiding a piercing punch 11, a punch fixing member 12, and a pressing member 13.

更に、ポンチ固定部材１２と押圧部材１３で、カムを構成している。また、下型としてのパンチ６には、ピアス加工時に、ピアスポンチ１１の先端が入り込むボタンダイ１６が設けられている。なお、図２（ａ）は絞り加工時、同（ｂ）はピアス加工時の孔開け装置１０の動作状態を示す。   Further, the punch fixing member 12 and the pressing member 13 constitute a cam. The punch 6 as the lower die is provided with a button die 16 into which the tip of the piercing punch 11 enters during piercing. 2A shows the operating state of the hole punching device 10 during drawing and FIG. 2B shows the operating state of the punching device 10 during piercing.

以上のように構成された装置による本発明に係るサーボプレスを用いた成形方法について説明する。
先ず、図３と図４（ａ）に示すように、スライド１が上死点に位置し、孔開け装置１０はピアスポンチ１１を後退させた状態で、薄鋼板のワークＷをボルスタ５とパンチ６上にセットし、スライド１をストロークＳＴ１だけ時間Ｔ１で下降させる。すると、スライド１がストロークＳＴ１だけ下降することにより、上型２がワークＷに当接する。 A forming method using the servo press according to the present invention by the apparatus configured as described above will be described.
First, as shown in FIG. 3 and FIG. 4 (a), the slide 1 is located at the top dead center, and the punching device 10 moves the pierced punch 11 backward and the workpiece W of the thin steel plate is punched with the bolster 5 6 is set, and slide 1 is lowered at time T1 by stroke ST1. Then, the upper die 2 comes into contact with the workpiece W by the slide 1 being lowered by the stroke ST1.

次いで、図３と図４（ｂ）に示すように、上型２がワークＷに当接してから、スライド１を更にストロークＳＴ２だけ時間Ｔ２で下降させると、スライド１は下死点に至る。そして、スライド１が下死点に到達した後、時間Ｔ３だけ加圧力を保持する。すると、上型２とパンチ６によりワークＷに絞り加工が施こされる。   Next, as shown in FIGS. 3 and 4B, when the slide 1 is further lowered at time T2 by the stroke ST2 after the upper mold 2 comes into contact with the workpiece W, the slide 1 reaches the bottom dead center. Then, after the slide 1 reaches the bottom dead center, the pressing force is maintained for a time T3. Then, the work W is drawn by the upper die 2 and the punch 6.

次いで、図３と図４（ｃ）に示すように、スライド１を下死点からストロークＳＴ３だけ上昇させ、この上昇時にエアシリンダ１４を前進動作させ押圧部材１３でポンチ固定部材１２を水平方向に押圧する。ポンチ固定部材１２と押圧部材１３でカムを構成しているので、ポンチ固定部材１２は押圧部材１３の水平方向の押圧動作によりハウジング１５で案内されて垂直方向に突出する。   Next, as shown in FIGS. 3 and 4 (c), the slide 1 is lifted from the bottom dead center by the stroke ST3, and when this is lifted, the air cylinder 14 is moved forward to move the punch fixing member 12 horizontally by the pressing member 13. Press. Since the punch fixing member 12 and the pressing member 13 form a cam, the punch fixing member 12 is guided by the housing 15 by the pressing operation of the pressing member 13 in the horizontal direction and protrudes in the vertical direction.

このようなスライド１の上昇動作とエアシリンダ１４の前進動作により、ポンチ固定部材１２に固定されたピアスポンチ１１が、上型２の成形面より突出すると共に、スライド１が下死点からストロークＳＴ３だけ上昇する。   The piercing punch 11 fixed to the punch fixing member 12 is protruded from the molding surface of the upper die 2 by the ascending operation of the slide 1 and the forward movement of the air cylinder 14, and the slide 1 is moved from the bottom dead center to the stroke ST3. Only rise.

次いで、図３と図４（ｄ）に示すように、スライド１を下死点からストロークＳＴ３だけ上昇した位置から、再度下死点まで下降させる。すると、上型２の成形面より突出したピアスポンチ１１とボタンダイ１６によりワークＷにピアス加工が施こされる。ここで、ピアス加工の際にピアスポンチ１１が受ける力は、ポンチ固定部材１２、押圧部材１３、ハウジング１５を介してスライド１によって受け止められるので、ピアスポンチ１１は円滑にピアス加工を行う。なお、ピアス加工の加工時間は、時間Ｔ４である。   Next, as shown in FIG. 3 and FIG. 4 (d), the slide 1 is lowered to the bottom dead center again from the position raised by the stroke ST <b> 3 from the bottom dead center. Then, the workpiece W is pierced by the piercing punch 11 and the button die 16 protruding from the molding surface of the upper mold 2. Here, since the force received by the piercing punch 11 during the piercing process is received by the slide 1 via the punch fixing member 12, the pressing member 13, and the housing 15, the piercing punch 11 performs the piercing process smoothly. In addition, the processing time of the piercing process is time T4.

このように、スライド１を下死点からストロークＳＴ３だけ上昇させるので、スライド１に不必要な昇降動作をさせることなく、また上型２のワークＷに対する加圧力をゼロにしてピアス加工を行うので、ＡＣサーボモータに対する不要な負荷や上型２及び下型６の温度上昇が発生することがない。   As described above, since the slide 1 is lifted from the bottom dead center by the stroke ST3, the piercing is performed without causing the slide 1 to perform an unnecessary lifting operation and with zero pressure applied to the workpiece W of the upper die 2. In addition, unnecessary load on the AC servo motor and temperature rise of the upper mold 2 and the lower mold 6 do not occur.

なお、ピアスポンチ１１が上型２の成形面から突出する動作が完了するタイミングとしては、上述のようにスライド１が下死点からストロークＳＴ３だけ上昇するまででもいいし、スライド１が再度下死点に到達するまででもよい。いずれにしても、スライド１を下死点からストロークＳＴ３だけ上昇させた位置から、再度下死点まで下降させることにより、上型２の成形面から突出したピアスポンチ１１が円滑にピアス加工を行うことができればよい。   The timing at which the piercing punch 11 protrudes from the molding surface of the upper die 2 may be completed until the slide 1 rises from the bottom dead center by the stroke ST3 as described above, or the slide 1 is bottom dead again. It may be until the point is reached. In any case, the pierce punch 11 protruding from the molding surface of the upper mold 2 smoothly pierces by lowering the slide 1 from the position where the slide 1 is raised by the stroke ST3 to the bottom dead center again. I can do it.

次いで、図３と図４（ｅ）に示すように、スライド１を時間Ｔ５だけ上昇させて上死点に戻すと、ワークＷの絞り加工とピアス加工の１サイクル（成形時間はＴ１＋Ｔ２＋Ｔ３＋Ｔ４＋Ｔ５）の作業が終了する。スライド１を上死点に戻す時に、エアシリンダ１４を後退動作させて押圧部材１３を後退させる。すると、ピアスポンチ１１の下降により縮装されたスプリング（不図示）によりピアスポンチ１１はポンチ固定部材１２と共に上昇してボタンダイ１６から離れ、上型２とハウジング１５に収納される。   Next, as shown in FIGS. 3 and 4 (e), when the slide 1 is raised by time T5 and returned to the top dead center, the work W is drawn and pierced for one cycle (forming time is T1 + T2 + T3 + T4 + T5). Ends. When the slide 1 is returned to the top dead center, the air cylinder 14 is moved backward to move the pressing member 13 backward. Then, the pierce punch 11 is lifted together with the punch fixing member 12 by a spring (not shown) that is contracted by the lowering of the pierce punch 11, is separated from the button die 16, and is stored in the upper mold 2 and the housing 15.

このように、絞り加工のみを行うのに必要とされる時間（Ｔ１＋Ｔ２＋Ｔ３＋Ｔ５）に、ピアス加工に必要とされるスライド１をストロークＳＴ３だけ上昇・下降させるだけの時間Ｔ４を足すだけで、絞り加工とピアス加工のトータル加工時間になるので、トータル加工時間の短縮が図れる。   Thus, the drawing process can be performed by adding the time T4 required to raise and lower the slide 1 required for the piercing process by the stroke ST3 to the time required for performing only the drawing process (T1 + T2 + T3 + T5). Since the total machining time for piercing is reached, the total machining time can be shortened.

絞り加工後にスライドを下死点から所定ストロークだけ上昇させてワークに対する加圧力を保持せずにピアス加工を行うので、モータの負荷が増大したり、金型の温度が上昇して金型が変形したりすることがなく、複合加工におけるトータル加工時間も短縮され、サーボプレスの特徴を生かした成形方法を実現することができる。   After drawing, the slide is lifted by a predetermined stroke from the bottom dead center, and piercing is performed without maintaining the pressure applied to the workpiece. Therefore, the load on the motor increases, the mold temperature rises, and the mold deforms. Therefore, the total machining time in the complex machining can be shortened, and a molding method utilizing the features of the servo press can be realized.

本発明に係るサーボプレスを用いた成形方法を実施する装置の概要断面図Outline sectional view of an apparatus for performing a molding method using a servo press according to the present invention 孔開け装置の動作状態を示す概要断面図で、（ａ）は絞り加工時、（ｂ）はピアス加工時It is outline sectional drawing which shows the operation state of a drilling device, (a) at the time of drawing processing, (b) at the time of piercing processing スライドのストロークと時間の関係図Relationship between slide stroke and time 成形方法の説明図で、（ａ）はスライドの下降動作、（ｂ）は絞り加工（下死点）、（ｃ）はスライドの上昇動作とエアシリンダの前進動作、（ｄ）はピアス加工（スライドの下降動作）、（ｅ）はスライドの上昇動作とエアシリンダの後退動作(A) is a slide lowering operation, (b) is a drawing process (bottom dead center), (c) is a slide lifting operation and an air cylinder advance operation, (d) is a piercing process ( Slide down operation), (e) shows slide up operation and air cylinder retraction operation

符号の説明Explanation of symbols

１…スライド、２…上型、３…ベッド、５…ボルスタ、６…下型（パンチ）、１０…孔開け装置、１１…ピアスポンチ、１２…ポンチ固定部材、１３…押圧部材、１４…エアシリンダ、１５…ハウジング、１６…ボタンダイ、Ｗ…ワーク。   DESCRIPTION OF SYMBOLS 1 ... Slide, 2 ... Upper type | mold, 3 ... Bed, 5 ... Bolster, 6 ... Lower type | mold (punch), 10 ... Hole punching device, 11 ... Pierce punch, 12 ... Punch fixing member, 13 ... Pressing member, 14 ... Air Cylinder, 15 ... housing, 16 ... button die, W ... workpiece.

Claims (1)

サーボプレスを用いて上型と下型により複合加工を行う成形方法であって、スライドを下降させ下死点で加圧保持してワークに絞り加工を行った後、前記スライドを所定位置まで上昇させて再度下降させると共に、前記上型側に設けた駆動手段によりピアスポンチを前記スライドが再度下死点に到達するまでに前記上型の成形面より突出させ、絞り加工が施された前記ワークにピアス加工を行うことを特徴とするサーボプレスを用いた成形方法。 This is a molding method that uses a servo press to perform combined machining with an upper die and a lower die. After lowering the slide and holding it under pressure at the bottom dead center, drawing the workpiece, the slide is raised to a predetermined position. The workpiece which has been subjected to drawing processing by causing the piercing punch to protrude from the molding surface of the upper die until the slide reaches the bottom dead center again by the driving means provided on the upper die side. A molding method using a servo press, characterized in that piercing is performed.
JP2004318290A 2004-11-01 2004-11-01 Molding method using servo press Expired - Fee Related JP4347197B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006122996A (en) * 2004-11-01 2006-05-18 Honda Motor Co Ltd Forming method using servo press
EP2604356A1 (en) * 2011-12-16 2013-06-19 Samsung Electronics Co., Ltd Press die
FR3026972A1 (en) * 2014-10-14 2016-04-15 Aerolia TOOL FOR FORMING THE PERFORMANCE OF AT LEAST ONE ORIFICE MADE IN A TOLEE PIECE AND METHOD OF FORMING AT LEAST ONE ORIFICE IN A PIECE TOLEATED BY THE USE OF SUCH A TOOL
CN110756667A (en) * 2019-11-07 2020-02-07 苏州三维精密机械有限公司 Small-space swinging and convex-beating structure and swinging and convex-beating method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006122996A (en) * 2004-11-01 2006-05-18 Honda Motor Co Ltd Forming method using servo press
JP4509740B2 (en) * 2004-11-01 2010-07-21 本田技研工業株式会社 Molding method using servo press
EP2604356A1 (en) * 2011-12-16 2013-06-19 Samsung Electronics Co., Ltd Press die
FR3026972A1 (en) * 2014-10-14 2016-04-15 Aerolia TOOL FOR FORMING THE PERFORMANCE OF AT LEAST ONE ORIFICE MADE IN A TOLEE PIECE AND METHOD OF FORMING AT LEAST ONE ORIFICE IN A PIECE TOLEATED BY THE USE OF SUCH A TOOL
CN110756667A (en) * 2019-11-07 2020-02-07 苏州三维精密机械有限公司 Small-space swinging and convex-beating structure and swinging and convex-beating method thereof
CN110756667B (en) * 2019-11-07 2024-05-17 苏州三维精密金属制品有限公司 Small-space swinging and embossing structure and swinging and embossing method thereof

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