JP2000033426A - Roll bending method and device therefor - Google Patents
Roll bending method and device thereforInfo
- Publication number
- JP2000033426A JP2000033426A JP10203560A JP20356098A JP2000033426A JP 2000033426 A JP2000033426 A JP 2000033426A JP 10203560 A JP10203560 A JP 10203560A JP 20356098 A JP20356098 A JP 20356098A JP 2000033426 A JP2000033426 A JP 2000033426A
- Authority
- JP
- Japan
- Prior art keywords
- work
- roll
- bending
- contact
- upper roll
- 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.)
- Pending
Links
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、板状のワークを円
錐台形状に曲成するいわゆるロール曲げ方法及びその装
置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called roll bending method and a device for bending a plate-like work into a truncated cone shape.
【０００２】[0002]
【従来の技術】この種ロール曲げ方法及び装置としては
上ロールだけをテーパロールにしたもの、３つのロール
をいずれもテーパロールにしたものが普通であるが、所
定の扇紙状のブランクとしたワークの場合には、このワ
ークの移動を規制することにより筒状円錐台形に曲成す
る方法及び曲げ装置が知られている。例えば、特開昭５
９−１６６２７号に開示されている技術は、ワークの内
側円弧状辺に接触する規制部材（制動部材）を前記３つ
のロールからなる曲成加工部へのワークの投入部に配置
したものであり、前記曲成加工部に送り込まれるワーク
の前記内側円弧状辺が前記規制部材と接触して、この部
分の送込み度合いが他方の外側円弧状部分側の送込み度
合いよりも少なくなる。この結果、円柱状のロールのみ
によって曲成する場合であっても、内側円弧状辺部の曲
率が大きく、外側円弧状辺部の曲率が小さくなって全体
としては、円錐台形状の筒状体に曲成されることとな
る。2. Description of the Related Art As this kind of roll bending method and apparatus, it is common to use only an upper roll as a tapered roll, or to use all three rolls as tapered rolls. In the case of a work, a method and a bending device are known in which the movement of the work is regulated to bend into a cylindrical truncated cone. For example, JP
The technology disclosed in Japanese Patent Application Laid-Open No. 9-16627 is such that a regulating member (braking member) that comes into contact with an inner arc-shaped side of a work is disposed in a work inputting section into a bending processing section including the three rolls. The inside arc-shaped side of the workpiece fed into the bending section comes into contact with the regulating member, and the degree of feeding of this portion is smaller than the degree of feeding of the other outer arc-shaped portion. As a result, even when curved only by the cylindrical roll, the curvature of the inner arc-shaped side portion is large and the curvature of the outer arc-shaped side portion is reduced, so that a cylindrical body having a truncated conical shape as a whole is obtained. Will be composed.
【０００３】ところがこの従来の方法では、前記内側円
弧状辺部の移動軌跡を規制するために、前記規制部材
を、前記内側円弧状辺部に対してワークの移動方向下流
側から内接させるだけであるから、加工曲成部でのこの
ワークの移動軌跡が円錐台形に曲成するための正確な移
動軌跡とはなりにくい。例えば、図７の実線状態から想
像線の状態に移動してワークが曲成加工部に送り込まれ
ることとなり、その結果、ワークを円錐台形に曲成する
際の仕上がり精度が不十分で、場合によっては、曲成完
了後の円錐台形において、扇紙形のワークの両端縁相互
が母線の方向にずれたりする。In this conventional method, however, in order to regulate the movement trajectory of the inner arc-shaped side portion, the regulating member is merely inscribed with the inner arc-shaped side portion from the downstream side in the workpiece moving direction. Therefore, it is difficult for the movement locus of the work in the processing bending portion to be an accurate movement locus for bending into a truncated cone. For example, the workpiece moves from the solid line state to the imaginary line state in FIG. 7 and is fed into the bending section. As a result, the finishing accuracy when bending the work into a truncated cone is insufficient, and in some cases, In the frusto-conical shape after the completion of the bending, both end edges of the fan-shaped work are displaced in the direction of the generatrix.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、係る点にか
んがみてなされたものであり、筒状円錐台形を展開した
扇紙形のワークＷを円柱状の上ロール(10)及び下ロール
(11)から成る曲成加工部(1) を通過させることにより筒
状円錐台形に曲げるロール曲げ方法において、曲げ加工
精度を高められ、正確な円錐台形、つまり、軸線方向の
両端の端縁が図５に示す平面(P1)(P2)となるようにする
ことをその課題とする。 ＊１項SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a fan-shaped work W in which a cylindrical frustoconical shape is developed, and a cylindrical upper roll (10) and a lower roll.
In the roll bending method of bending into a cylindrical truncated cone by passing through the bending section (1) consisting of (11), the bending accuracy can be increased, and the accurate truncated cone, that is, the edges at both ends in the axial direction can be The task is to make the planes (P 1 ) and (P 2 ) shown in FIG. * 1
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に講じた本発明の技術的手段は、『前記ワークＷの同心
状の内側円弧状辺(R1)及び外側円弧状辺(R2)の移動方向
を共に規制することにより、前記両方の円弧状辺が、前
記上ロール(10)の前記ワークＷとの接触母線を半径線と
する円周方向に共に移動するように、前記ワークＷを前
記曲成加工部(1) に通過させること』である。Means for Solving the Problems The technical means of the present invention taken to solve the above-mentioned problem is that "the concentric inner arc side (R1) and the outer arc side (R2) of the work W are concentric. By regulating the moving direction together, the workpiece W is moved so that both of the arc-shaped sides move together in a circumferential direction having a radius of contact with the workpiece W of the upper roll (10). Passing through the bending section (1) ”.
【０００６】上記技術的手段は次のように作用する。ワ
ークＷが曲成加工部(1) を通過する間に円錐台形状の筒
状体に成形されるが、上記方法では、内側円弧状辺(R1)
及び外側円弧状辺(R2)の両方が上ロール(10)のワークＷ
との接触母線を半径線とする円周方向に移動するように
ワークＷの移動が規制されつつ曲成加工部(1) にて曲成
される。したがって、ワークＷは、最終仕上がり形状の
円錐台形に前記扇紙形のワークＷを巻付ける様にして曲
成されることとなる。The above technical means operates as follows. While the workpiece W is formed into a truncated conical cylindrical body while passing through the bending section (1), in the above method, the inner circular side (R1) is formed.
And both the outer arc side (R2) and the workpiece W of the upper roll (10)
The workpiece W is bent in the bending section (1) while the movement of the work W is regulated so as to move in the circumferential direction having the radius of contact with the contact generating line. Therefore, the work W is bent in such a manner that the fan-shaped work W is wound around a truncated cone having a final finished shape.
【０００７】このようにワークＷが円錐台形に仕上がっ
た形状では、ワークＷの両端の直線状端縁が正確に一致
したものとなる。In the shape of the work W thus finished in a truncated cone shape, the straight edges at both ends of the work W exactly match.
【０００８】[0008]
【発明の効果】このようにワークＷが円錐台形に仕上が
った形状では、ワークＷの両端の直線状端縁が正確に一
致したものとなるから、円錐台形に曲成する際の曲げ精
度が向上する。 ＊２項 上記１項の方法を実施する装置としては、『前記曲成加
工部(1) におけるワークＷの内側円弧状辺(R1)の移動域
であって前記上ロール(10)の一端の下方に第１移動規制
部材(2) を設けると共に、前記上ロール(10)の他端側で
ワークＷの外側円弧状辺(R2)の移動域には第２移動規制
部材(3) を設け、前記第１移動規制部材(2) は前記内側
円弧状辺(R1)に対して前記上ロール(10)のワークＷとの
接触母線が半径線となる姿勢で移動できる関係に内接す
る制動部材であり、前記第２移動規制部材(3) は、曲成
加工部(1) を通過した後のワークＷの移動方向を規制す
ることによりワークＷの外側円弧状辺(R2)における曲成
加工部(1) の上手側が、前記上ロール(10)の前記ワーク
Ｗとの接触母線を半径線とする円周方向に移動するよう
に、前記ワークＷの移動を規制する部材であるロール曲
げ装置』とする。As described above, in the shape in which the work W is finished in the shape of a truncated cone, the straight edges at both ends of the work W are exactly coincident with each other, so that the bending accuracy when bending the work W into the shape of a truncated cone is improved. I do. * 2 Item The apparatus for performing the method of the above item 1 includes a “moving area of the inner arc-shaped side (R1) of the workpiece W in the bending section (1) and an end of the one end of the upper roll (10). A first movement restricting member (2) is provided below, and a second movement restricting member (3) is provided on the other end side of the upper roll (10) in a moving area of the outer arc side (R2) of the work W. The first movement restricting member (2) is a braking member inscribed in such a relation that the contact line of the upper roll (10) with the workpiece W with respect to the inner arc-shaped side (R1) can move in a radial line. The second movement restricting member (3) restricts the moving direction of the work W after passing through the bending section (1) to thereby perform bending processing on the outer arc-shaped side (R2) of the work W. The movement of the work W is regulated such that the upper side of the part (1) moves in the circumferential direction with the radius of contact of the upper roll (10) with the work W as the radius line. Roll bending device ".
【０００９】この装置によれば、前記第１移動規制部材
(2) と第２移動規制部材(3) とによってワークＷが上記
した軌跡で移動しながら曲成加工部(1) を通過して円錐
台形筒状に曲成されるから、１項の場合と同様の効果を
有するものとなる。加えて、第１移動規制部材(2) 及び
第２移動規制部材(3) は上ロール(10)との関係で所定の
位置に固定されたものであるから、曲げ加工に熟練を要
しない。 ＊３項 上記２項において、『曲成加工部(1) は、１つの上ロー
ル(10)に対して１対の下ロール(11)(11)が対向配置され
る構成とし、前記第１移動規制部材(2) は、上ロール(1
0)の下方で且前記下ロール(11)(11)の間にて内側円弧状
辺(R1)に対して内接する円弧状側壁部(21)を具備する板
状体であり、前記第２移動規制部材(3)は、前記曲成加
工部(1) から脱出した曲成後のワークＷの外側円弧状辺
(R2)に外側から接触する固定部材である』ものとした場
合には、外側円弧状辺(R2)が成形後に上ロール(10)に対
して直角な平面に仕上げられることとなるから、曲げ精
度が一層向上する。また、内側円弧状辺(R1)に対しては
第１移動規制部材(2) が内接して点接触するだけである
から、ワークＷと第１移動規制部材(2) との接触抵抗も
軽減される。 ＊４項 上記３項において『第２移動規制部材(3) としての前記
固定部材は、上ロール(10)に対して所定の方向に傾斜し
た傾斜面(31)を具備し、前記上ロール(10)におけるワー
クＷとの前記接触母線に対する前記傾斜面(31)の前記傾
斜方向及び傾斜角度は、曲成完了後の円錐台形の大径側
端縁の前記接触母線に対する傾斜方向及び傾斜角度に適
合させ、前記傾斜面(31)が曲成加工部(1) から脱出した
ワークＷに接触する構成である』としたものでは、曲成
加工部(1) から脱出した加工後のワークＷが傾斜面(31)
との接触により一層正確に曲成されることとなる。According to this device, the first movement restricting member is provided.
(2) and the second movement restricting member (3) cause the work W to move along the above-mentioned locus and pass through the bending section (1) to be bent into a truncated conical cylindrical shape. The same effect is obtained. In addition, since the first movement regulating member (2) and the second movement regulating member (3) are fixed at predetermined positions in relation to the upper roll (10), no skill is required for bending. * 3. In the above item 2, the bending section (1) has a structure in which a pair of lower rolls (11) and (11) are arranged to face one upper roll (10). The movement restricting member (2) is
0) and a plate-like body having an arc-shaped side wall (21) inscribed with the inner arc-shaped side (R1) between the lower rolls (11) and (11), The movement restricting member (3) is provided on the outer arc-shaped side of the bent workpiece W that has escaped from the bending section (1).
(R2) is a fixing member that comes into contact with the outside from the outside '', the outer arc-shaped side (R2) will be finished to a plane perpendicular to the upper roll (10) after molding, The accuracy is further improved. Further, since the first movement restricting member (2) is only inscribed and is in point contact with the inner arc side (R1), the contact resistance between the work W and the first movement restricting member (2) is also reduced. Is done. * 4. In the above item 3, the fixing member as the second movement restricting member (3) includes an inclined surface (31) inclined in a predetermined direction with respect to the upper roll (10). The inclination direction and the inclination angle of the inclined surface (31) with respect to the contact bus with the workpiece W in 10) are set to the inclination direction and the inclination angle of the large diameter side edge of the truncated cone after the bending is completed with respect to the contact bus. Is adapted so that the inclined surface (31) comes into contact with the work W escaped from the bent portion (1). " Inclined surface (31)
The contact is more accurate.
【００１０】また、『第２移動規制部材(3) は、ワーク
Ｗの外側円弧状辺(R2)に対して曲成加工部(1) の出口側
で点接触する構成とし、上ロール(10)とワークＷの前記
外側円弧状辺(R2)との接点と、前記点接触部分と、これ
らの２点の間で曲成された前記外側円弧状辺(R2)の部分
とによって構成される平面が前記傾斜面(31)と一致する
固定部材である』としたものも、同様の作用、効果を有
するものとなる。The second movement restricting member (3) is configured to make point contact with the outer arc side (R2) of the workpiece W at the outlet side of the bending portion (1), and the upper roll (10) ) And the outer circular side (R2) of the work W, the point contact portion, and the outer circular side (R2) curved between these two points. A flat member is a fixing member whose plane coincides with the inclined surface (31). "
【００１１】前記第２移動規制部材(3) の固定位置を調
節可能としたものでは、円錐台形の筒状製品の母線長さ
に合わせて前記固定位置を調整できるから使い勝手が良
い。When the fixing position of the second movement restricting member (3) is adjustable, the fixing position can be adjusted in accordance with the length of the generatrix of the truncated conical tubular product, so that it is easy to use.
【００１２】[0012]
【発明の実施の形態】次に、上記した本発明の実施例を
図面に従って詳述する。この実施の形態は、駆動側の上
ロール(10)とその下方に１対の従動側の下ロール(11)(1
1)を並設した構成のロール曲げ機の例である。いずれも
円柱状のロールである。Next, an embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, an upper roll (10) on the driving side and a pair of lower rolls (11) (1
This is an example of a roll bending machine having a configuration in which 1) is juxtaposed. Both are cylindrical rolls.
【００１３】上ロール(10)はフレームＦの駆動ボックス
Ｂによって支持され、前記駆動ボックスＢ内の駆動モー
タによって回転駆動される構成である。また、下ロール
(11)(11)は両端部が昇降部材(12)によって支持されてお
り、所定の操作信号によって作動する昇降駆動装置（図
示せず）によって同期的に昇降駆動される構成である。The upper roll (10) is supported by a drive box (B) of a frame (F) and is driven to rotate by a drive motor in the drive box (B). Also roll down
Both ends are supported by an elevating member (12), and are driven synchronously by an elevating drive device (not shown) operated by a predetermined operation signal.
【００１４】前記上ロール(10)の自由端側はフレームＦ
の端部に取りつけた支持腕Ｓにより回転自在に支持され
ると共に、この支持腕Ｓが倒れると、フレームＦの上面
と前記上ロール(10)との間が前記上ロール(10)の自由端
側で開放する。従って、このように開放することによ
り、上ロール(10)と下ロール(11)との間で曲成された製
品が上ロール(10)と下ロール(11)とからなる曲成加工部
(1) から外部に取り出せることとなる。The free end of the upper roll (10) is a frame F
Is rotatably supported by a support arm S attached to the end of the upper roll (10). When the support arm S falls down, the free end of the upper roll (10) is moved between the upper surface of the frame F and the upper roll (10). Open at the side. Therefore, by releasing in this manner, the product bent between the upper roll (10) and the lower roll (11) can be bent and formed by the upper roll (10) and the lower roll (11).
It can be taken out from (1).
【００１５】前記フレームＦにおける前記上ロール(10)
の自由端側の下方には、図１〜３に示すような第１移動
規制部材(2) が取りつけられている。この第１移動規制
部材(2) は、フレームＦの内側に突出する部分の円弧状
側壁部(21)の平面視が円弧状又は楕円弧状に形成された
端面となっており、この中央の頂部が図３に示すように
上ロール(10)の回転軸の下方に位置するように取りつけ
られている。そして、前記２の断面形状は図２に示すよ
うに上ロール(10)と一対の下ロール(11)(11)の間の空間
をほぼ充満するような形態に構成されており、上ロール
(10)におけるこの２の上方域は小径部(101) となってお
り、この小径部内に前記第１移動規制部材(2) の一部が
入り込んだ状態にある。The upper roll (10) in the frame F
A first movement restricting member (2) as shown in FIGS. The first movement restricting member (2) has an end face formed in an arc shape or an elliptical arc shape in plan view of an arc-shaped side wall portion (21) of a portion protruding inside the frame F. Are mounted below the rotation axis of the upper roll (10) as shown in FIG. The cross-sectional shape of the above 2 is configured so as to substantially fill the space between the upper roll (10) and the pair of lower rolls (11) and (11) as shown in FIG.
The upper region of (2) in (10) is a small diameter portion (101), and a part of the first movement restricting member (2) is in the small diameter portion.
【００１６】他方の第２移動規制部材(3) は、ワークＷ
の曲成加工部(1) からの脱出側に取りつけられており、
図１及び図３に示すように、直方体状のブロックであ
る。この一方の平面部は上ロール(10)の母線に対して直
交する傾斜面(31)となっており、この傾斜面(31)がワー
クＷの外側円弧状辺(R2)の切線となるように取りつけら
れている。そして、上ロール(10)の軸線の下方の母線と
外側円弧状辺(R2)との交点が前記切線における接点とな
る。The other second movement regulating member (3)
Is mounted on the escape side of the bending section (1) of
As shown in FIGS. 1 and 3, it is a rectangular parallelepiped block. The one flat portion is an inclined surface (31) orthogonal to the generatrix of the upper roll (10), and the inclined surface (31) is a cutting line of the outer arc-shaped side (R2) of the work W. It is attached to. Then, the intersection of the generatrix below the axis of the upper roll (10) and the outer arc-shaped side (R2) becomes a contact point in the cut line.
【００１７】この曲成加工部(1) におけるワークＷの脱
出側の下ロール(11)は、前記第２移動規制部材(3) に対
して昇降可能に貫通し、さらに、この第２移動規制部材
(3)の下部はフレームＦ内にて上ロール(10)、下ロール
(11)と平行な方向に移動可能に支持されている。このた
め、ガイド軸(32)が前記第２移動規制部材(3) を貫通す
ると共に、前記ガイド軸(32)と平行に支持した送りネジ
(33)が前記第２移動規制部材(3) に貫通螺合する。The lower roll (11) on the escape side of the work W in the bending section (1) penetrates the second movement restricting member (3) so as to be able to move up and down. Element
The lower part of (3) is the upper roll (10) and the lower roll in the frame F.
It is movably supported in a direction parallel to (11). For this reason, a guide screw (32) penetrates through the second movement restricting member (3) and a feed screw supported in parallel with the guide shaft (32).
(33) is threadedly engaged with the second movement restricting member (3).
【００１８】従って、この送りネジ(33)を回転させると
前記第２移動規制部材(3) が上ロール(10)の軸線方向に
進退移動することとなる。この例のロール曲げ機を用い
て扇紙形のワークＷを、図５に示す円錐台形の筒状体に
曲成する方法について以下に説明する。ワークＷの両端
部を所定の状態に端曲げをしたあと、両端の直線状端縁
Ｌ，Ｌの一方が上ロール(10)の下方の母線と一致し、内
側円弧状辺(R1)が第１移動規制部材(2) の頂点に外接す
る態様にて、ワークＷを曲成加工部(1) 内に投入する。
このとき、上記した送りネジ(33)の調整により、第２移
動規制部材(3) は前記状態に送り込まれたワークＷの外
側円弧状辺(R2)に対して切線となる位置にセットされ
る。Therefore, when the feed screw (33) is rotated, the second movement restricting member (3) moves forward and backward in the axial direction of the upper roll (10). A method of bending a fan-shaped work W into a truncated conical cylindrical body shown in FIG. 5 using the roll bending machine of this example will be described below. After the both ends of the work W are bent in a predetermined state, one of the straight edges L, L at both ends coincides with the generating line below the upper roll (10), and the inner arc-shaped side (R1) is the (1) The work W is put into the bending section (1) in a manner to circumscribe the vertex of the movement restricting member (2).
At this time, by adjusting the feed screw (33) described above, the second movement restricting member (3) is set at a position where the outer arc-shaped side (R2) of the workpiece W fed into the above state is a cutting line. .
【００１９】この状態で上ロール(10)を駆動させて曲げ
加工を行うと、内側円弧状辺(R1)側の送込み移動が第１
移動規制部材(2) によって制動され、内側円弧状辺(R1)
の送込み移動速度が遅くなる。一方外側円弧状辺(R2)側
の移動速度はこのような制動が無いものの曲成後の前記
外側円弧状辺(R2)の部分は傾斜面(31)に沿って移動し
て、上ロール(10)とワークＷとの接線（母線）に対して
所定の傾斜面を構成するようにガイドされる。このよう
にして、図３、図４に示すように、内側円弧状辺(R1)は
第１移動規制部材(2) の頂点を接点とし、且、曲成後の
外側円弧状辺(R2)が前記傾斜面(31)を構成する様にワー
クＷが曲成されて、最終的には、図５に示すように、
Ｌ，Ｌが近接した状態の円錐台形の筒状体の製品に曲成
される。この曲げ加工終了後に、前記支持腕Ｓを開放し
て前記製品を取り出し、Ｌ，Ｌ相互を溶接する等して筒
状体の製品に仕上げる。In this state, when the upper roll (10) is driven to perform bending, the feeding movement on the inner arc side (R1) side is caused by the first movement.
Braking by the movement restricting member (2), the inner arc-shaped side (R1)
The moving speed of the transfer becomes slow. On the other hand, the moving speed of the outer circular side (R2) side does not have such braking, but the portion of the outer circular side (R2) after bending moves along the inclined surface (31), and the upper roll ( The workpiece is guided so as to form a predetermined inclined surface with respect to a tangent (generating line) between the workpiece 10) and the workpiece W. In this manner, as shown in FIGS. 3 and 4, the inner arc-shaped side (R1) has the vertex of the first movement restricting member (2) as a contact point, and the outer arc-shaped side (R2) after bending. The workpiece W is bent so as to constitute the inclined surface (31), and finally, as shown in FIG.
L, L are bent into a frusto-conical cylindrical product in a state where they are close to each other. After the completion of the bending, the support arm S is opened, the product is taken out, and L and L are welded to each other to finish the product into a cylindrical body.
【００２０】上記した例では、曲成加工部(1) 内に送り
込まれたワークＷは上ロール(10)下ロール(11)が円柱状
であるから送り込まれた初期姿勢のままで下流側に移動
しようとするが、内側円弧状辺(R1)に対して第１移動規
制部材(2) の頂点が接触してこの移動を阻止するように
働く。一方、曲成加工部(1) から脱出したワークＷの加
工済の部分は傾斜面(31)に沿って移動するように規制さ
れるから、上ロール(10)とワークＷとの接触部が上ロー
ル(10)の軸線方向に移動することもないから、つまり、
図７の実線の状態から想像線の状態に移動することが無
いから、曲げ精度が高い。In the above-described example, the work W sent into the bending section (1) is moved downstream in the initial posture sent since the upper roll (10) and the lower roll (11) are cylindrical. The first movement restricting member (2) comes into contact with the inner arc-shaped side (R1), and acts to prevent this movement. On the other hand, the processed part of the work W that has escaped from the bending part (1) is regulated so as to move along the inclined surface (31), so that the contact part between the upper roll (10) and the work W Because it does not move in the axial direction of the upper roll (10),
Since there is no movement from the state of the solid line to the state of the imaginary line in FIG. 7, the bending accuracy is high.
【００２１】なお第１移動規制部材(2) 、及び、第２移
動規制部材(3) は、上記実施の形態に限定されるもので
はなく、上記した作用を発揮する限り、他の形状及び構
成のものが採用できることは言うまでもない。上記第１
移動規制部材(2) 、及び、第２移動規制部材(3) は、図
８〜図１１に示すような、実施の形態２とすることもで
きる。The first movement restricting member (2) and the second movement restricting member (3) are not limited to the above-described embodiment, but may have other shapes and configurations as long as the above-described action is exhibited. It goes without saying that the above can be adopted. The first
The movement restricting member (2) and the second movement restricting member (3) can be the second embodiment as shown in FIGS.
【００２２】この実施の形態２では、図８〜図１０に示
すように、一対の第１移動規制部材(2) (2) を上ロール
(10)を挟んで対向して位置するように前記上ロール(10)
及び下ロール(11)(11)の端部に配置した構成であり、各
第１移動規制部材(2) の端縁周壁は、４分の１円弧にし
てあり、前記端縁周壁は上ロール(10)の断面の下端に位
置する母線から外れた位置に配置されている。In the second embodiment, as shown in FIGS. 8 to 10, a pair of first movement regulating members (2) (2) are
(10) the upper roll (10) so as to be opposed to the sandwich
And the lower rolls (11) and (11) are arranged at the ends thereof. The edge peripheral wall of each first movement restricting member (2) is a quarter arc, and the edge peripheral wall is an upper roll. It is arranged at a position off the generatrix located at the lower end of the cross section of (10).
【００２３】他方の第２移動規制部材(3) は、この実施
の形態では、上ロール(10)の両側にこれと平行に固定さ
れる帯板状の取付け台(34)(34)に取付位置を調節できる
ようにネジ止めした取付けブロック(35)に装備されるガ
イドローラ(37)で、前記上ロール(10)の近傍に配置され
ている。この取付けブロック(35)は、同図及び図１１に
示すように、一対の取付けネジ(36)(36)によって前記取
付け台(34)(34)に設けたネジ孔(38)(38)にネジ止めされ
ている。従って、特定位置のネジ孔(38)(38)を選定して
これにネジ止めすることにより前記ガイドローラ(37)が
ワークＷとの関係で所定の位置に位置決めされることと
なる。なお、取付けブロック(35)の貫通孔は長孔に設定
されているから、前記所定の位置の微調整が可能であ
る。In the present embodiment, the other second movement restricting member (3) is mounted on strip-shaped mounting bases (34) (34) fixed in parallel to both sides of the upper roll (10). A guide roller (37) mounted on a mounting block (35) screwed so that the position can be adjusted, and is disposed near the upper roll (10). As shown in FIGS. 11 and 12, the mounting block (35) is inserted into screw holes (38) (38) provided in the mounting bases (34) (34) by a pair of mounting screws (36) (36). Screwed. Therefore, the guide roller (37) is positioned at a predetermined position in relation to the work W by selecting and screwing the screw holes (38) (38) at the specific positions. Since the through hole of the mounting block (35) is set to be a long hole, fine adjustment of the predetermined position is possible.
【００２４】この例では、一方の曲成加工部(1) への投
入側に位置する一方の第１移動規制部材(2) と、前記曲
成加工部(1) からの出口側の一方のガイドローラ(37)と
によって決定されるワークＷの移動軌跡が、最終的な製
品形状に適ったものとなる。このとき、上ロール(10)に
おけるワークＷとの接線母線と外側円弧状辺(R2)との交
点と、前記一方のガイドロール(37)と外側円弧状辺(R2)
との接点とを結ぶ線と、この間の外側円弧状辺(R2)の部
分円弧とによって構成される平面は、上記した傾斜面(3
1)に一致するものとなる。In this example, one of the first movement restricting members (2) located on the input side to one of the bending portions (1) and one of the outlet side from the bending portion (1). The movement trajectory of the work W determined by the guide roller (37) is suitable for the final product shape. At this time, the intersection of the tangent generatrix of the upper roll (10) with the workpiece W and the outer circular side (R2), the one guide roll (37) and the outer circular side (R2)
The plane formed by the line connecting the contact point with the contact point and the partial arc of the outer arc-shaped side (R2) therebetween is the above-described inclined surface (3
It will be the same as 1).
【００２５】この例の場合も、上記した実施の形態１と
同様の効果を発揮する。In the case of this example, the same effect as that of the first embodiment is exhibited.
【図１】本発明の実施の形態のロール曲げ機の断面図FIG. 1 is a sectional view of a roll bending machine according to an embodiment of the present invention.
【図２】第１移動規制部材(2) の部分の断面図（ＩＩ−
ＩＩ線断面図）FIG. 2 is a sectional view of a portion of a first movement regulating member (2) (II-
II section view)
【図３】第２移動規制部材(3) の曲げ加工時の平面図FIG. 3 is a plan view of the second movement restricting member (3) during bending.
【図４】ワークＷが円錐台形に曲成された製品の外観斜
視図FIG. 4 is an external perspective view of a product in which a workpiece W is bent into a truncated cone.
【図５】ワークＷが円錐台形に曲成された製品の平面図
と第１移動規制部材(2) 及び第２移動規制部材(3) との
関係を示す平面図FIG. 5 is a plan view showing a relationship between a plan view of a product in which a work W is bent into a truncated cone shape and first and second movement regulating members (2) and (3).
【図６】第２移動規制部材(3) の正面図（ＶＩ−ＶＩ線
断面図）FIG. 6 is a front view (a sectional view taken along line VI-VI) of a second movement regulating member (3).
【図７】曲げ不良の説明図FIG. 7 is an explanatory view of a bending defect.
【図８】実施の形態２の要部平面図FIG. 8 is a plan view of a main part of the second embodiment.
【図９】第１移動規制部材(2) の部分の斜視図FIG. 9 is a perspective view of a portion of a first movement regulating member (2).
【図１０】図８に於けるＸ−Ｘ線断面図FIG. 10 is a sectional view taken along line XX in FIG. 8;
【図１１】図８に於けるＸＩ−ＸＩ線断面図FIG. 11 is a sectional view taken along line XI-XI in FIG. 8;
Ｗ：ワーク、(10)：上ロール、(11)：下ロール、(1) ：
曲成加工部、(R1)：内側円弧状辺、(R2)：外側円弧状
辺、(2) ：第１移動規制部材、(3) ：第２移動規制部
材、(21)：円弧状側壁部、(31)：傾斜面、Ｆ：フレー
ム、Ｂ：駆動ボックス、(12)：昇降部材、(101) ：小径
部、(32)：ガイド軸、(33)：送りネジ、(34)：取付台、
(35)：取付ブロック、(36)：取付ネジ、(37)：ガイドロ
ーラ、(38)：ネジ孔W: Work, (10): Upper roll, (11): Lower roll, (1):
Curved portion, (R1): inner arc side, (R2): outer arc side, (2): first movement restricting member, (3): second movement restricting member, (21): arc side wall Part, (31): inclined surface, F: frame, B: drive box, (12): lifting member, (101): small diameter part, (32): guide shaft, (33): feed screw, (34): Mounting stand,
(35): Mounting block, (36): Mounting screw, (37): Guide roller, (38): Screw hole
Claims (6)
Ｗを円柱状の上ロール(10)及び下ロール(11)から成る曲
成加工部(1) を通過させることにより筒状円錐台形に曲
げるロール曲げ方法において、前記ワークＷの同心状の
内側円弧状辺(R1)及び外側円弧状辺(R2)の移動方向を共
に規制することにより、前記両方の円弧状辺が、前記上
ロール(10)の前記ワークＷとの接触母線を半径線とする
円周方向に共に移動するように、前記ワークＷを前記曲
成加工部(1) に通過させるロール曲げ方法。1. A fan-shaped work W developed from a cylindrical truncated cone is passed through a bending section (1) composed of a cylindrical upper roll (10) and a lower roll (11) to form a cylindrical cone. In the roll bending method of bending into a trapezoid, both of the arc-shaped sides (R1) and the outer arc-shaped sides (R2) of the workpiece W are regulated by controlling both the moving directions of the arc-shaped sides (R1) and the outer arc-shaped sides (R2). A roll bending method for passing the work W through the bending section (1) so that the roll (10) moves together in a circumferential direction with a radius of contact with the work W of the roll (10).
Ｗを円柱形の上ロール(10)及び下ロール(11)から成る曲
成加工部(1) を通過させることにより筒状円錐台形に曲
げるロール曲げ装置において、前記曲成加工部(1) にお
けるワークＷの内側円弧状辺(R1)の移動域であって前記
上ロール(10)の一端の下方に第１移動規制部材(2) を設
けると共に、前記上ロール(10)の他端側でワークＷの外
側円弧状辺(R2)の移動域には第２移動規制部材(3) を設
け、前記第１移動規制部材(2) は前記内側円弧状辺(R1)
に対して前記上ロール(10)のワークＷとの接触母線が半
径線となる姿勢で移動できる関係に内接する制動部材で
あり、前記第２移動規制部材(3) は、加工曲成部(1) を
通過した後のワークＷの移動方向を規制することにより
ワークＷの外側円弧状辺(R2)における加工曲成部(1) の
上手側が、前記上ロール(10)の前記ワークＷとの接触母
線を半径線とする円周方向に移動するように、前記ワー
クＷの移動を規制する部材である、ロール曲げ装置。2. A fan-shaped work W having a cylindrical truncated cone developed is passed through a bending section (1) comprising a cylindrical upper roll (10) and a lower roll (11) to form a cylindrical cone. In the roll bending apparatus for bending into a trapezoid, a first movement regulating member (1) is provided in a movement area of the inner arc-shaped side (R1) of the workpiece W in the bending section (1) and below one end of the upper roll (10). 2), and a second movement regulating member (3) is provided in the movement area of the outer circular side (R2) of the work W at the other end of the upper roll (10), and the first movement regulating member (3) is provided. 2) is the inner arc side (R1)
Is a braking member that is inscribed in such a relation that the generating line of contact of the upper roll (10) with the workpiece W can be a radius line, and the second movement restricting member (3) is 1) by restricting the moving direction of the work W after passing through, the upper side of the processed curved portion (1) on the outer arc-shaped side (R2) of the work W is in contact with the work W of the upper roll (10). A roll bending device, which is a member that restricts the movement of the work W so as to move in the circumferential direction with the contact generating line as a radius line.
に対して１対の下ロール(11)(11)が対向配置される構成
とし、前記第１移動規制部材(2) は、上ロール(10)の下
方で且前記下ロール(11)(11)の間にて内側円弧状辺(R1)
に対して内接する円弧状側壁部(21)を具備する板状体で
あり、前記第２移動規制部材(3) は、前記曲成加工部
(1) から脱出した曲成後のワークＷの外側円弧状辺(R2)
に外側から接触する固定部材である請求項２に記載のロ
ール曲げ装置。3. The bending section (1) includes one upper roll (10).
A pair of lower rolls (11) and (11) are arranged to face each other, and the first movement restricting member (2) is provided below the upper roll (10) and at the lower rolls (11) and (11). ) Between the inner arc sides (R1)
A plate-like body having an arc-shaped side wall (21) inscribed with the second movement restricting member (3).
Outer arc-shaped side (R2) of the work W after composition that escaped from (1)
The roll bending apparatus according to claim 2, wherein the fixing member is a fixing member that comes into contact with the outside from outside.
部材は、上ロール(10)に対して所定の方向に傾斜した傾
斜面(31)を具備し、前記上ロール(10)におけるワークＷ
との前記接触母線に対する前記傾斜面(31)の前記傾斜方
向及び傾斜角度は、曲成完了後の円錐台形の大径側端縁
の前記接触母線に対する傾斜方向及び傾斜角度に適合さ
せ、前記傾斜面(31)が曲成加工部(1) から脱出したワー
クＷに接触する構成である請求項３に記載のロール曲げ
装置。4. The fixing member as a second movement restricting member (3) has an inclined surface (31) inclined in a predetermined direction with respect to the upper roll (10). Work W
The inclination direction and the inclination angle of the inclined surface (31) with respect to the contact generating line are adjusted to the inclination direction and the inclination angle of the large diameter side edge of the truncated cone after the completion of bending with respect to the contact generating line. The roll bending apparatus according to claim 3, wherein the surface (31) is configured to contact the work W escaped from the bending section (1).
ロール(10)の軸線方向に調節可能とした請求項２から４
までのいずれかに記載のロール曲げ装置。5. The fixing position of the second movement regulating member (3) can be adjusted in the axial direction of the upper roll (10).
The roll bending apparatus according to any one of the above.
側円弧状辺(R2)に対して曲成加工部(1) の出口側で点接
触する構成とし、上ロール(10)とワークＷの前記外側円
弧状辺(R2)との接点と、前記点接触部分と、これらの２
点の間で曲成された前記外側円弧状辺(R2)の部分とによ
って構成される平面が前記傾斜面(31)と一致する固定部
材である請求項３に記載のロール曲げ装置。The second movement restricting member (3) is configured to make point contact with the outer arcuate side (R2) of the work W at the outlet side of the bending portion (1), and the upper roll (10) The point of contact with the outer circular side (R2) of the workpiece W, the point contact portion,
The roll bending apparatus according to claim 3, wherein a plane defined by the outer arc-shaped side (R2) curved between points is a fixing member that coincides with the inclined surface (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10203560A JP2000033426A (en) | 1998-07-17 | 1998-07-17 | Roll bending method and device therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10203560A JP2000033426A (en) | 1998-07-17 | 1998-07-17 | Roll bending method and device therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000033426A true JP2000033426A (en) | 2000-02-02 |
Family
ID=16476169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10203560A Pending JP2000033426A (en) | 1998-07-17 | 1998-07-17 | Roll bending method and device therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000033426A (en) |
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| JP2016074009A (en) * | 2014-10-08 | 2016-05-12 | 株式会社フタバ | Bending roll device |
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