JPS6213091B2 - - Google Patents
Info
- Publication number
- JPS6213091B2 JPS6213091B2 JP53120019A JP12001978A JPS6213091B2 JP S6213091 B2 JPS6213091 B2 JP S6213091B2 JP 53120019 A JP53120019 A JP 53120019A JP 12001978 A JP12001978 A JP 12001978A JP S6213091 B2 JPS6213091 B2 JP S6213091B2
- Authority
- JP
- Japan
- Prior art keywords
- bending
- straight
- form punch
- metal material
- die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005452 bending Methods 0.000 claims description 39
- 239000007769 metal material Substances 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 description 6
- 238000000465 moulding Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Description
【発明の詳細な説明】
本発明は例えば自動二輪車のフエンダーやバン
パーの如き金属板を曲げ成形する方法、及びこれ
に用いる装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for bending and forming a metal plate such as a fender or bumper of a motorcycle, and an apparatus used therefor.
更に詳しくは、断面略Ｕ字形の帯状金属素材を
曲げ成形するにさいし、素材の厚さ方向に圧力を
加えてこれの曲げ加工を行い、圧縮、伸びの中立
軸を曲げ方向内側へ寄せることにより、素材の略
全部を伸び変形で成形加工し得るようにし、バフ
仕上げ等の後処理の不要な鏡面成形を企図するこ
とができるようにした曲げ成形方法及びその装置
に関する。 More specifically, when bending and forming a band-shaped metal material with a roughly U-shaped cross section, pressure is applied in the thickness direction of the material to bend it, and the neutral axes of compression and elongation are moved inward in the bending direction. The present invention relates to a bending method and an apparatus thereof, in which substantially the entire material can be formed by stretching and deforming, and mirror-finishing that does not require post-processing such as buffing is possible.
金属板を曲げ加工するため第７図に示す如く、
雄型１、雌型２の間に帯状の金属素材３をセツト
し、その両端をブランクホルダー４と雌型２とで
挾着させ、雄型１を降下させて押圧力を加える
と、素材３の曲げ方向内側には圧縮力が発生し、
曲げ方向外側には引張力が発生し、伸び、縮みに
より素材表面の面粗度は悪化する。この金属板を
例えば自動二輪車のフエンダーやバンパーの如く
外部に組み付けられる製品として使用した場合に
は、外観性が重要視されるため、メツキ処理前に
バフ研摩を行つて製品表面の面粗度を良好にしな
ければならず、これを人手によつて行えば作業性
の点で問題が生じ、作業効率が低下する。 In order to bend a metal plate, as shown in Figure 7,
A band-shaped metal material 3 is set between the male mold 1 and the female mold 2, its both ends are clamped between the blank holder 4 and the female mold 2, and when the male mold 1 is lowered and a pressing force is applied, the material 3 A compressive force is generated on the inside in the bending direction,
Tensile force is generated on the outside in the bending direction, and the surface roughness of the material surface deteriorates due to elongation and shrinkage. When this metal plate is used as a product that is assembled externally, such as the fender or bumper of a motorcycle, appearance is important, so buffing is performed before plating to improve the surface roughness of the product surface. If this is done manually, problems will arise in terms of workability and work efficiency will be reduced.
本発明者は金属板を曲げ加工する場合における
以上の如き問題点に鑑み、これを有効に解決する
ために本発明を成したものであり、特に曲げ加工
を行いつつ素材の厚さ方向に圧力を加えれば、圧
力を加えない場合と比較して中立軸が曲げ方向の
内側に偏位することに着目して本発明を成したも
のである。 In view of the above-mentioned problems when bending a metal plate, the present inventor has devised the present invention to effectively solve the problems. The present invention was developed by focusing on the fact that when pressure is applied, the neutral axis is deviated inward in the bending direction compared to when no pressure is applied.
本発明の目的とする処は、略Ｕ字形であつて樋
状の断面が長さ方向に連続する帯状金属素材を曲
げ加工する場合、この素材に厚さ方向の圧力を加
えてこの曲げ加工を行うようにし、曲げ力と厚さ
方向荷重とにより金属素材内部に生じる圧縮、伸
びの中立軸を曲げ方向内側に寄せ、素材略全部の
表面を伸び変形させるようにし、これを以つて
皺、デフオーム等のない良好な成形面が得られる
ようにした金属板の曲げ成形方法を提供する。 The object of the present invention is that when bending a strip metal material that is approximately U-shaped and has a gutter-like cross section that continues in the length direction, the bending process is performed by applying pressure in the thickness direction to the material. By doing so, the neutral axis of compression and elongation that occurs inside the metal material due to bending force and thickness direction load is moved inward in the bending direction, and almost the entire surface of the material is stretched and deformed, thereby eliminating wrinkles and deformation. To provide a method for bending and forming a metal plate by which a good forming surface free from scratches and the like can be obtained.
又本発明の目的とする処は、金属素材の曲げ成
形形状に形成したフオームパンチを昇降自在なア
ツパーダイセツトに設け、このアツパーダイセツ
トと上下に対向させてストレートダイを摺動自在
に支持するホルダーを左右一組回動自在に軸支し
たロアーダイセツトを設け、このホルダーの軸支
端とは反対側の端部を上下動自在なカウンタプレ
ツシヤパツドに対して摺動自在とし、ストレート
ダイにセツトした金属板をアツパーダイセツトの
降下によりフオームパンチで曲げ成形するととも
に、上方への弾発押圧力が作用するカウンタプレ
ツシヤパツド、及びこれに摺動端部が支持された
ストレートダイホルダーを介して金属素材に厚さ
方向への圧力を加え、素材を曲げ加工しつつ厚さ
方向への圧力を作用させることができるようにし
た金属板の曲げ装置を提供する。 Another object of the present invention is to provide a form punch formed in the shape of a bent metal material on an upper die set that can be raised and lowered, and to vertically face the upper die set so that a straight die can slide freely. A lower die set is provided in which a pair of holders to be supported are rotatably supported on the right and left sides, and the end of this holder opposite to the shaft support end is slidable on a counterpressure pad that is movable up and down. The metal plate set in the straight die is bent and formed by a form punch as the upper die set descends, and a counterpressure pad is applied with an upward spring pressing force, and the sliding end is supported by this. To provide a metal plate bending device capable of applying pressure in the thickness direction to a metal material through a straight die holder, and applying pressure in the thickness direction while bending the material.
以下に本発明の好適一実施例を添付図面に従つ
て詳述する。 A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
第１図は本発明に係る装置の右半分のみを断面
として示した半載断面図であり、装置は左右対称
の構造を有し、この実施例では自動二輪車のフエ
ンダーを製作するために用いられる。１０は図示
しないラム等の昇降手段に取り付けられたアツパ
ーダイセツトであり、このアツパーダイセツト１
０の下面中央部に略半円状のフオームパンチ１１
を一体に固着する。フオームパンチ１１の半円状
下面は素材の曲げ加工面１１ａとなるものであ
り、従つてこの加工面１１ａを所定のフエンダー
製品形状に予め形成しておく。１２はアツパーダ
イセツト１０の下部対向位置に設置されたロアー
ダイセツトであり、左右両端にガイド孔１３，１
３を有し、これ１３に嵌装されたブツシユ１４に
ガイドポスト１５が挿入され、このガイドポスト
１５の上端はアツパーダイセツト１０のガイド孔
１６に嵌装されたブツシユ１７に挿入され、アツ
パーダイセツト１０はガイドポスト１５に案内さ
れてロアーダイセツト１２に対し上下動する。 FIG. 1 is a half-mounted cross-sectional view showing only the right half of the device according to the present invention, and the device has a symmetrical structure, and in this embodiment, it is used to manufacture a fender for a motorcycle. . 10 is an upper die set attached to a lifting means such as a ram (not shown), and this upper die set 1
A substantially semicircular form punch 11 in the center of the lower surface of 0
be fixed together. The semicircular lower surface of the form punch 11 serves as a bending surface 11a of the material, and therefore, this processing surface 11a is previously formed into a predetermined fender product shape. 12 is a lower die set installed at a position opposite to the lower part of the upper die set 10, and has guide holes 13, 1 at both left and right ends.
3, a guide post 15 is inserted into a bush 14 fitted into this 13, and the upper end of this guide post 15 is inserted into a bush 17 fitted into a guide hole 16 of the upper die set 10, and the The die set 10 is guided by a guide post 15 and moves up and down relative to the lower die set 12.
ロアーダイセツト１２の上面に装置内方へ延出
部１８，１８を対称的に形成し、これ１８の先端
にブラケツト１８ａを一体に設ける。夫々のスト
レートダイホルダー１９，１９の外端部をこのブ
ラケツト１８ａに軸２０で軸支し、ロアーダイセ
ツト１２に対して回動自在とする。ストレートダ
イホルダー１９は装置中心線までの長さを有し、
その断面形状は第４図に示す如くコの字状であ
る。このホルダー１９に形成したコの字状長溝１
９ａにホルダー１９と略同じ長さのストレートダ
イ２１を嵌挿し、これら１９，２１を固定せず、
長さ方向に摺動自在とする。ストレートダイ２１
の上面を開口し、断面略Ｕ字形の素材セツト部２
１ａを設ける。左右で一組を成すストレートダイ
２１，２１の上部にバネ鋼で成形した板状の制御
ベルト２２を架け渡すとともに、両端２２ａ，２
２ｂを押板２３でストレートダイ２１の外端部に
挾着し、ボルトで締着する。これにより一組のス
トレートダイ２１，２１をその外両端部において
ベルト２２で相互に結合する。制御ベルト２２は
金属素材曲げ成形時、前記フオームパンチ１１に
沿つたストレートダイ２１の転動周長を決定し、
且つ弾発力によりこれ２１を旧位に復帰させるも
のである。又、ストレートダイ２１の前記素材セ
ツト部２１ａを光沢のある鏡面に仕上げる。 On the upper surface of the lower die set 12, extending parts 18, 18 are formed symmetrically toward the inside of the apparatus, and a bracket 18a is integrally provided at the tip of the parts 18. The outer ends of each straight die holder 19, 19 are supported by a shaft 20 on this bracket 18a, and are rotatable with respect to the lower die set 12. The straight die holder 19 has a length up to the center line of the device,
Its cross-sectional shape is U-shaped as shown in FIG. U-shaped long groove 1 formed in this holder 19
A straight die 21 of approximately the same length as the holder 19 is inserted into 9a, and these 19 and 21 are not fixed.
It should be able to slide freely in the length direction. Straight die 21
The material setting section 2 has an approximately U-shaped cross section and is open at the top.
1a is provided. A plate-shaped control belt 22 made of spring steel is spanned over the left and right straight dies 21, 21, and both ends 22a, 2
2b is clamped to the outer end of the straight die 21 with the push plate 23 and tightened with bolts. As a result, the pair of straight dies 21, 21 are connected to each other by the belt 22 at both outer ends thereof. The control belt 22 determines the rolling circumference of the straight die 21 along the form punch 11 during bending of the metal material,
Moreover, the elastic force returns this 21 to its previous position. Further, the material setting portion 21a of the straight die 21 is finished to a glossy mirror surface.
アツパーダイセツト１０とロアーダイセツト１
２との間にカウンタプレツシヤパツド２４を設
け、このパツド２４の中央部２４ａを水平とし、
両端部２４，２４ｂを上方へ起設するとともに、
この両端部２４ｂに前記ガイドポスト１５を上下
に貫通させて固定する。ストレートダイホルダー
１９の内端部、即ち前記軸２０による軸支端とは
反対側の端部下面にカウンタプレツシヤシユー２
５をピン２６で枢着し、このシユー２５をパツド
中央部２４ａの上面に摺動自在に取り付け、スト
レートダイホルダー１９をカウンタプレツシヤパ
ツド２４に対して摺動移動可動とする。このカウ
ンタプレツシヤシユー２５の下部には油圧等によ
る押上力が作用しているダイクツシヨンピン２７
を多数本並設し、夫々のピン２７をシユー２５の
下面に当接させ、これ２５を弾性的に支持させ
る。 Upper die set 10 and lower die set 1
A counterpressure pad 24 is provided between the pad 2 and the pad 24, with the center portion 24a of the pad 24 being horizontal.
While raising both end portions 24, 24b upward,
The guide post 15 is vertically penetrated and fixed to both ends 24b. A counterpressure shaft 2 is provided on the lower surface of the inner end of the straight die holder 19, that is, the end opposite to the end supported by the shaft 20.
The shoe 25 is slidably attached to the upper surface of the pad center portion 24a, and the straight die holder 19 is slidably movable with respect to the counterpressure pad 24. At the bottom of this counterpressure shaft 25, there is a dictation pin 27 on which a pushing force such as hydraulic pressure is applied.
A large number of shoes 25 are arranged in parallel, and each pin 27 is brought into contact with the lower surface of the shoe 25 to elastically support the shoe 25.
次に作用について述べる。 Next, we will discuss the effect.
ストレートダイ２１の素材セツト部２１ａに板
状のフエンダー素材Ｗをフリー状態として載置す
る。この素材Ｗは予め断面略Ｕ字状に形成され、
この形状が長さ方向に連続した帯状で、且つ成形
完了時、所定のフエンダー完成品となるように端
末をカツト、或は端末曲げ、又はカーリング処理
を行つておく。前記ラム等の昇降手段を作動さ
せ、アツパーダイセツト１０を降下させ、ガイド
孔１６のブツシユ１７にガイドポスト１５を挿入
させるとともに、前記フオームパンチ１１の下頂
部を金属素材Ｗの上面に接触させる。この状態が
第１図で示されており、これから曲げ加工が開始
される。アツパーダイセツト１０を更に降下させ
ると、金属素材Ｗにフオームパンチ１１の押圧力
が作用し、この押圧力はストレートダイ２１、ス
トレートダイホルダー１９に加わり、カウンタプ
レツシヤシユー２５を介してカウンタプレツシヤ
パツド２４に作用し、パツド２４はダイクツシヨ
ンピン２７の弾発力に抗して下動する。アツパー
ダイセツト１０の降下の継続により、アツパーダ
イセツト１０はロアーダイセツト１２に近ずき、
この結果、一対のストレートダイ１９，１９は軸
２０を中心として下方へ開くように回動し、この
回動はカウンタプレツシヤシユー２５がカウンタ
ープレツシヤパツド２４上面を摺動することによ
つて成され、これに伴ない前記制御ベルト２２は
フオームパンチ１１の周端面１１ｂに巻き付く如
く当接し、且つ金属素材Ｗをセツトしたストレー
トダイ２１はフオームパンチ１１の外周面に倣う
如く転動し、ストレートダイホルダー１９の回動
変位量とベルト２２の長さの差に対応してストレ
ートダイ２１はホルダー１９に対して摺動し、第
２図に示す如き状態となる。 A plate-shaped fender material W is placed in a free state on the material setting portion 21a of the straight die 21. This material W is previously formed into a substantially U-shaped cross section,
The end is cut, bent, or curled so that the shape is a continuous band in the length direction, and when the molding is completed, a predetermined completed fender product is obtained. The lifting means such as the ram is operated to lower the upper die set 10, insert the guide post 15 into the bush 17 of the guide hole 16, and bring the lower top of the form punch 11 into contact with the upper surface of the metal material W. . This state is shown in FIG. 1, and the bending process is now started. When the upper die set 10 is further lowered, the pressing force of the form punch 11 acts on the metal material W, this pressing force is applied to the straight die 21 and the straight die holder 19, and is transferred to the counter press 25 via the counter press 25. It acts on the pressure pad 24, and the pad 24 moves downward against the elastic force of the dictation pin 27. As the upper die set 10 continues to descend, the upper die set 10 approaches the lower die set 12.
As a result, the pair of straight dies 19, 19 rotate to open downward about the shaft 20, and this rotation is caused by the counterpressure shaft 25 sliding on the upper surface of the counterpressure pad 24. Accordingly, the control belt 22 comes into contact with the peripheral end surface 11b of the form punch 11 so as to wrap around it, and the straight die 21 in which the metal material W is set rolls so as to follow the outer peripheral surface of the form punch 11. The straight die 21 slides relative to the holder 19 in response to the difference between the amount of rotational displacement of the straight die holder 19 and the length of the belt 22, resulting in a state as shown in FIG.
ストレートダイ２１がフオームパンチ１１に倣
いつつ転動する間に金属素材Ｗの曲げ加工が成さ
れ、この曲げ加工時、素材Ｗにはフオームパンチ
１１による曲げ力の他に、カウンタプレツシヤパ
ツド２４、カウンタプレツシヤシユー２５、スト
レートダイホルダー１９、ストレートダイ２１を
介して前記ダイクツシヨンピン７の弾発クツシヨ
ン力が作用することとなり、このため素材Ｗに厚
さ方向の圧力が作用し、厚さ方向圧力は多数本並
設したピン２７…により素材Ｗの曲げ成形を通し
て加わる。 While the straight die 21 rolls while following the form punch 11, the metal material W is bent, and during this bending, the material W is subjected to a bending force not only by the form punch 11 but also by the counterpressure pad 24. , the resilient cushioning force of the die cutting pin 7 acts through the counterpressure shaft 25, the straight die holder 19, and the straight die 21, so that pressure in the thickness direction acts on the material W, Thickness direction pressure is applied through bending of the material W by a large number of pins 27 arranged in parallel.
第５図、第６図はこの時の曲げ成形原理を簡略
化して示し、特に第６図は荷重応力分布を示す。 5 and 6 show the bending principle at this time in a simplified manner, and in particular, FIG. 6 shows the load stress distribution.
金属材料に曲げ荷重を作用させると、材料内部
には中立軸を境界として圧縮変形部分、伸び変形
部分が生ずるが、伸び変形を発生させる引張力は
圧縮変形部分の圧縮変形抵抗力によつて生ずる。
この場合に厚さ方向への圧力が作用していればこ
の圧縮変形抵抗力は極めて大きくなり、又伸び変
形抵抗力は小さくなるため、第６図に示す如く中
立軸Ｎ―Ｎの位置は厚さ方向への圧力を加えてい
ない単純曲げの場合と比較して素材Ｗの曲げ方向
内側に偏位することとなり、弾性限界を越える厚
さ方向荷重により素材Ｗの略全表面を伸び変形さ
せて曲げ成形することができる。 When a bending load is applied to a metal material, a compressive deformation part and an elongation deformation part are generated inside the material with the neutral axis as the boundary, but the tensile force that causes the elongation deformation is generated by the compressive deformation resistance force of the compressive deformation part. .
In this case, if pressure is applied in the thickness direction, this compressive deformation resistance force will be extremely large, and the elongation deformation resistance force will be small, so the position of the neutral axis N-N is Compared to the case of simple bending in which no pressure is applied in the horizontal direction, the material W is deflected inward in the bending direction, and almost the entire surface of the material W is stretched and deformed due to the load in the thickness direction that exceeds the elastic limit. Can be bent and formed.
以上によりストレートダイ２１に拘束され、厚
さ方向圧力を受けつつ曲げ加工される金属素材Ｗ
は略全部が伸び変形によつて所定の形状に成形さ
れることとなり、より少い材料で成形を行うこと
ができ、且つ皺、デフオーム等は発生せず、良好
な成形仕上げ面となる。又、金属素材Ｗをセツト
するストレートダイ２１を既述の如く鏡面仕上げ
しているため、製品の成形面にはこれが転写され
て光沢のある鏡面となり、従来において必要であ
つたバフ研摩等による仕上げ加工を必要としな
い。 As described above, the metal material W is restrained by the straight die 21 and subjected to bending while receiving pressure in the thickness direction.
Almost all of the molded material is formed into a predetermined shape by stretching and deformation, so that molding can be performed using less material, and wrinkles, deformation, etc. do not occur, resulting in a good molded surface. In addition, since the straight die 21 for setting the metal material W is mirror-finished as described above, this is transferred to the molding surface of the product, resulting in a glossy mirror-finish, which eliminates the need for finishing by buffing, etc., which was previously required. No processing required.
曲げ加工終了後、アツパーダイセツト１０を上
昇させれば、カウンタプレツシヤパツド２４はダ
イクツシヨンピン２７の押上弾発力によつて上動
し、これに伴い制御ベルト２２の弾性力によつて
ストレートダイホルダー１９はカウンタプレツシ
ヤシユー２５を設けた摺動端部がカウンタプレツ
シヤパツド２４の上面をスライドして水平状態と
なり、全てが旧位に復帰する。 After the bending process is completed, when the upper die set 10 is raised, the counterpressure pad 24 is moved upward by the upward force of the die cut pin 27, and accordingly, the elastic force of the control belt 22 causes the counterpressure pad 24 to move upward. Therefore, the sliding end portion of the straight die holder 19 provided with the counterpressure shoe 25 slides on the upper surface of the counterpressure pad 24 to be in a horizontal state, and everything returns to its original position.
以上の実施例は自動二輪車のフエンダーを製作
する場合であつたが、本発明はフエンダーに限ら
ず、バンパー等の任意な製品、ワークに採用し得
る。 Although the embodiments described above were for manufacturing fenders for motorcycles, the present invention is not limited to fenders, but can be applied to any product or work such as a bumper.
以上の説明で明らかな如く本発明によれば、断
面略Ｕ字状の金属素材を、該素材のＵ字状の両端
末部側を内側にして曲げ成形するにさいしこれに
厚さ方向への圧力を加えるようにしたため、圧
縮、伸びの中立軸が曲げ方向内側に寄ることとな
り、従つて素材略全部を伸び変形によつて成形す
ることができ、成形面を製品の片寄り、うねり、
のび不足や皺等の発生をおさえた良好な仕上げ面
とすることができる。そして一対のストレートダ
イとフオームパンチの間に該フオームパンチによ
るストレートダイの転動周長を規制する転動周長
規制部材を介在させているため、金属素材の曲げ
角度をこの簡単な構造の規制部材で調整すること
ができ、特別なストツパーやリミツター等が不要
となる。またこの転動周長規制部材を実施例中で
示した如く帯状の弾性部材とすれば、その弾圧力
で移動したストレートダイを元の位置に復帰させ
るべく作用させることができる。 As is clear from the above description, according to the present invention, when a metal material having a substantially U-shaped cross section is bent and formed with both ends of the U-shape inward, the metal material is bent in the thickness direction. Since pressure is applied, the neutral axes of compression and elongation move inward in the bending direction, and almost the entire material can be formed by elongation deformation, and the forming surface is prevented from shifting, waviness, and
It is possible to obtain a good finished surface that suppresses the occurrence of insufficient spread and wrinkles. Since a rolling circumference regulating member is interposed between the pair of straight dies and the form punch to regulate the rolling circumference of the straight die by the form punch, the bending angle of the metal material can be regulated with this simple structure. It can be adjusted using parts, eliminating the need for special stoppers or limiters. Further, if this rolling circumference regulating member is a band-shaped elastic member as shown in the embodiment, the elastic force of the member can be used to return the moved straight die to its original position.
又本発明によれば、以上の如く曲げ成形時、素
材の厚さ方向へ圧力を作用させるにもかかわら
ず、これをストレートダイ、これのホルダー等に
より比較的構造簡単に構成することができ、且つ
アツパーダイセツトを降下させれば全ての部品が
これと連動して作動し、機構、構造が簡単化し、
更に金属素材を挾持するクランプ手段等は不要で
この点においても構造、装置自体が簡単となり、
製品にクランプ手段の痕跡ができない利点を有す
る。 Further, according to the present invention, even though pressure is applied in the thickness direction of the material during bending as described above, it can be constructed with a relatively simple structure using a straight die, its holder, etc. In addition, when the upper die set is lowered, all parts work together, simplifying the mechanism and structure.
Furthermore, there is no need for clamping means to hold the metal material, which simplifies the structure and device itself.
This has the advantage that no traces of the clamping means are left on the product.
又本発明によれば、例えば前記実施例の如く金
属素材をセツトするストレートダイを鏡面仕上げ
しておけば、製品の成形面が光沢のある鏡面とな
り、メツキ処理前に従来において必要であつたバ
フ研摩等の仕上げ加工処理を不要とし、作業性の
向上、作業効率の向上に資する処頗る大である。 Furthermore, according to the present invention, if the straight die used to set the metal material is mirror-finished as in the above-mentioned embodiment, the molding surface of the product will be a glossy mirror-finished product, and the buffing that was conventionally required before plating will be eliminated. It eliminates the need for finishing treatments such as polishing, and is a major feature that contributes to improved workability and efficiency.
図面は本発明の一実施例を示し、第１図は装置
の半載断面正面図、第２図は成形加工終了後にお
ける第１図と同様の図、第３図は装置の一部を断
面とした半載平面図、第４図は第３図４―４線断
面図、第５図、第６図は本発明の原理説明図、第
７図は従来例を示す図である。
尚図面中、１０はアツパーダイセツト、１１は
フオームパンチ、１２はロアーダイセツト、１９
はストレートダイホルダー、２１はストレートダ
イ、２４はカウンタープレツシヤパツド、Ｗは金
属素材である。
The drawings show one embodiment of the present invention; FIG. 1 is a front view of a half-mounted cross-section of the device, FIG. 2 is a view similar to FIG. 1 after the molding process is completed, and FIG. FIG. 4 is a sectional view taken along the line 4-4 in FIG. 3, FIGS. 5 and 6 are diagrams explaining the principle of the present invention, and FIG. 7 is a diagram showing a conventional example. In the drawing, 10 is an upper die set, 11 is a form punch, 12 is a lower die set, 19
21 is a straight die holder, 24 is a counterpressure pad, and W is a metal material.
Claims (1)
動可能なフオームパンチに形成した曲げ加工面と
この曲げ加工面に衝接しつつその外端部を中心に
回動する一対のストレートダイとの間にセツトし
てこの金属素材の長手方向を曲げ成形するに際
し、 前記ストレートダイをダイクツシヨンピンによ
つて曲げ加工面方向に付勢し、金属素材をその厚
さ方向に弾性限界を越えて加圧しつつ該素材のＵ
字状両端末部側を内側に曲げ加工するとともに、 前記一対のストレートダイと前記フオームパン
チの間に転動周長規制部材を介在させ、フオーム
パンチによるストレートダイの転動周長を規制す
るようにしたことを特徴とする金属板の曲げ成形
方法。 ２ ロアーダイセツトに対しガイドポストを介し
て昇降可能とされたアツパーダイセツトと、 このアツパーダイセツトに固設され、断面略Ｕ
状をなす雄型の曲げ加工面がその周方向に形成さ
れたフオームパンチと、 前記ガイドポストに昇降可能に設けられたカウ
ンタプレツシヤパツドと、 このカウンタプレツシヤパツドを幅方向断面略
Ｕ字形の金属素材の曲げ加工面方向に付勢するダ
イクツシヨンピンと、 その内方の一端が前記カインタプレツシヤパツ
ドに対して滑動自在とされ、その外方の他端が前
記ロアーダイセツトに枢着され且つ前記フオーム
パンチの移動に伴つて鏡面に仕上げられた断面略
Ｕ状のその雌型の加工面がフオームパンチの曲げ
加工面に衝接しつつ回動し、金属素材の長手方向
の曲げ加工をおこなう１対のストレートダイと、 このストレートダイと前記フオームパンチの間
に介在し、フオームパンチによるストレートダイ
の転動周長を規制する転動周長規制部材とからな
る金属板の曲げ成形装置。[Scope of Claims] 1. A metal material having a substantially U-shaped cross section in the width direction is rotated about its outer end while colliding with a bending surface formed in a movable form punch and the bending surface. When bending the metal material in the longitudinal direction by setting it between a pair of straight dies, the straight die is urged in the direction of the bending surface by a die cutting pin, and the metal material is bent to its thickness. While applying pressure in the direction beyond the elastic limit, the U of the material
Both ends of the shape are bent inward, and a rolling circumference regulating member is interposed between the pair of straight dies and the form punch to regulate the rolling circumference of the straight die by the form punch. A method for bending and forming a metal plate, characterized by: 2 An upper die set that can be raised and lowered with respect to the lower die set via a guide post, and a die set that is fixed to the upper die set and has a cross section of approximately U.
a form punch having a shaped male bent surface formed in its circumferential direction; a counterpressure pad provided on the guide post so as to be movable up and down; the counterpressure pad having a cross section in the width direction approximately U A dicing pin biases the metal material in the direction of the bending surface, one inner end of which is slidable against the counter pressure pad, and the other outer end of which is slidable against the lower die set. As the form punch moves, the female processed surface, which has a mirror-finished, approximately U-shaped cross section, rotates while colliding with the bending surface of the form punch, thereby bending the metal material in the longitudinal direction. Bending forming of a metal plate consisting of a pair of straight dies for processing, and a rolling circumference regulating member interposed between the straight die and the form punch to regulate the rolling circumference of the straight die by the form punch. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12001978A JPS5548423A (en) | 1978-09-29 | 1978-09-29 | Bending molding method of metallic plate and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12001978A JPS5548423A (en) | 1978-09-29 | 1978-09-29 | Bending molding method of metallic plate and its device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5548423A JPS5548423A (en) | 1980-04-07 |
| JPS6213091B2 true JPS6213091B2 (en) | 1987-03-24 |
Family
ID=14775884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12001978A Granted JPS5548423A (en) | 1978-09-29 | 1978-09-29 | Bending molding method of metallic plate and its device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5548423A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59169629A (en) * | 1983-03-16 | 1984-09-25 | Hitachi Ltd | Method and apparatus for bending shape |
| JPH07111879B2 (en) * | 1986-02-14 | 1995-11-29 | 株式会社東芝 | Color picture tube device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5223626A (en) * | 1975-08-18 | 1977-02-22 | Matsushita Electric Ind Co Ltd | High temperature battery |
| JPS5226507A (en) * | 1975-08-20 | 1977-02-28 | Kraftco Corp | Raw material fatty acid of dimer acid |
-
1978
- 1978-09-29 JP JP12001978A patent/JPS5548423A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5223626A (en) * | 1975-08-18 | 1977-02-22 | Matsushita Electric Ind Co Ltd | High temperature battery |
| JPS5226507A (en) * | 1975-08-20 | 1977-02-28 | Kraftco Corp | Raw material fatty acid of dimer acid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5548423A (en) | 1980-04-07 |
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