JPH01192421A - Non-contact type detector for bent angle of plate material - Google Patents
Non-contact type detector for bent angle of plate materialInfo
- Publication number
- JPH01192421A JPH01192421A JP1575988A JP1575988A JPH01192421A JP H01192421 A JPH01192421 A JP H01192421A JP 1575988 A JP1575988 A JP 1575988A JP 1575988 A JP1575988 A JP 1575988A JP H01192421 A JPH01192421 A JP H01192421A
- Authority
- JP
- Japan
- Prior art keywords
- slit
- plate material
- plate
- bending
- right angles
- 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
- 238000005452 bending Methods 0.000 claims description 36
- 230000000630 rising effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的コ
（産業上の利用分野）
本発明は非接触式の板材折曲げ角度検知器に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Field of Industrial Application) The present invention relates to a non-contact type plate bending angle detector.
（従来の技術）
従来、板材折曲げ角度検知器には接触式と非接触式とが
あった。前者は下型の前方或いは後方の一方又は両方の
一定距離位置に弾機などによって上向ぎに付勢されて板
材の折曲げによる跳ね上りに接触追従して上昇し、タン
ジェント函数によって折曲げ角を検知する方式のもので
あった。(Prior Art) Conventionally, there have been two types of plate bending angle detectors: contact type and non-contact type. The former is biased upward by a projectile or the like at a certain distance in front of or behind the lower mold, and rises by contact with the bounce caused by the bending of the plate, and the bending angle is determined by the tangent function. It was a method to detect.
後者に属するものには板材の折曲げ軸方向と直交する方
向の端面を照らす照明と、ＣＯＤビデオカメラを備え、
端面の折曲げられた角度に関する情報を得る方式のもの
であった。Those belonging to the latter category are equipped with lighting that illuminates the end face in a direction perpendicular to the bending axis direction of the plate material, and a COD video camera.
It was a method to obtain information about the angle at which the end face was bent.
（発明が解決しようとする課題）
上記の従来の装置の内接融成のものは、接触追従して上
昇する部材が板材の底面を斜めに店動するさいに板材の
裏面に傷がついたり、上昇する部材に横圧が作用して湾
曲する課題があった。(Problems to be Solved by the Invention) In the above-mentioned conventional device for internal fusion, when the member that rises following contact moves obliquely on the bottom surface of the plate, the back surface of the plate may be damaged. However, there was a problem that lateral pressure was applied to the rising member, causing it to curve.
ＣＯＤビデオカメラを使うものは、板材の折曲げ軸方向
の端面の情報は得られても、板材の中央付近の折曲げ角
とは異る情報であり、何分にも経費が高くつく課題があ
ったのである。When using a COD video camera, although information on the end face of the plate in the direction of the bending axis can be obtained, the information is different from the bending angle near the center of the plate, which poses the problem of increasing costs over time. There it was.
［発明の構成］
（課題を解決するための手段）
本発明の板材折曲げ角度検知器は、板材折曲機のボルス
タ上の一定位置に板材の折曲げ線と平行な軸のまわりに
回動位置決め自在な有底筒体を備え、該右底筒体の頂部
にスリットを備えるとともに底部にスリットを通して平
行光線を折曲げた板材の面に直角に照射する発光素子と
、折曲げた板材の面から直角に反射して前記したスリッ
トを逆通過した光線を受光する受光素子とを備えた板材
の折曲げ角度検出器にして、前記有底筒体からの照射光
線を水平面から所望の角度に正確に回動位置決めする歩
進電動機を設けて従来装置の課題を解決したのである。[Structure of the Invention] (Means for Solving the Problems) The plate bending angle detector of the present invention rotates around an axis parallel to the bending line of the plate at a fixed position on the bolster of a plate bending machine. A light-emitting element comprising a cylinder with a bottom that can be positioned freely, and having a slit at the top of the right-bottom cylinder and emitting parallel rays through the slit at the bottom at right angles to the surface of the bent plate, and the surface of the bent plate. A bending angle detector made of a plate material is equipped with a light-receiving element that receives the light beam that is reflected at right angles from the slit and passes back through the slit described above. By providing a stepping motor for rotational positioning, the problems of conventional devices were solved.
（作用）
上記からすでに明らかなように、本発明の技術思想を真
現した検知器は非接触であるから板材の裏面を損傷する
ことがなく、摺動移動部分を湾曲させて動きを重くする
こともなく、ＣＯＤビデオカメラを備えるよりは格段に
コスト安に目的を達し得たのである。(Function) As is already clear from the above, the detector that embodies the technical idea of the present invention is non-contact, so it does not damage the back side of the plate, and the sliding part is curved to make the movement heavier. The goal was achieved at a much lower cost than installing a COD video camera.
（実施例）
第３図に示したのは、本発明を実施した対象例機として
の板材折曲機（ブレスブレーキ）１であって、下部フレ
ーム３の上のボルスタ５にはこの場合例えば位置固定の
下型７が取りつけである。(Example) FIG. 3 shows a sheet material bending machine (breath brake) 1 as a target example machine in which the present invention is implemented, and the bolster 5 on the lower frame 3 has a position, for example, in this case. A fixed lower die 7 is attached.
左右のサイドフレム９，１１を介して上部フレーム１３
が設けてあり、その左右には例えば油圧シリンダ１５．
１７に駆動されて上部エプロン（ラムと呼ぶこともある
。）１つが昇降移動する。Upper frame 13 via left and right side frames 9, 11
are provided, and on the left and right sides thereof, for example, hydraulic cylinders 15.
17, one upper apron (sometimes called a ram) moves up and down.
上記上部エプロン１９の下端には、中間板２１と呼ばれ
る板継手を介して上型２３がとりつけである。An upper mold 23 is attached to the lower end of the upper apron 19 via a plate joint called an intermediate plate 21.
上型２３も下型７も短い金型を集めて組み合わせである
のは、全体として左右に長い板材Ｗを折曲げるときも短
い板材Ｗを折曲げる場合にも単位寸法の長さの金型を共
用できるようにしたものである。また中間板２１は長い
板材Ｗの折曲げ作業時に上型２３の中央部が「中だれ現
象」と呼ばれる１突に湾曲して折曲げ角が両端に比べて
鈍角になるのを防止するために、予め中央部を下にいく
らか突出させて保持するためのものである。Both the upper die 23 and the lower die 7 are a combination of short dies, so that when bending a plate material W that is long from side to side or when bending a short plate material W, a die with a unit dimension length is used as a whole. It is designed to be shared. In addition, the intermediate plate 21 is used to prevent the central part of the upper mold 23 from curving in one direction, which is called a "sagging phenomenon", and the bending angle becomes obtuse compared to both ends when bending a long plate material W. , to hold the center part in advance with some protrusion downwards.
第１図に示した本発明の実施例探知機２５は、板材Ｗの
折曲げ線２７より例えば交の距離だけ離れたボルスタ５
の前方（第１図の右方）に有底筒体２９の回動中心３１
が回動位置決め自在に設けである。The detector 25 according to the embodiment of the present invention shown in FIG.
The rotation center 31 of the bottomed cylindrical body 29 is located in front of (right side in Fig. 1)
is provided so that it can be rotated and positioned freely.
上記回動中心３１は歩進電動！ｆｉ３３（パルスモータ
、ステッピングモータなど）の軸に連結してあって、有
底筒体２９は歩進電動機３３によって１パルスごとに正
確に例えば３０分ずつ、水平面に対する角度を増減する
方向に回動されて位置決めされる。The rotation center 31 mentioned above is a stepping motor! The bottomed cylindrical body 29 is connected to the shaft of the fi 33 (pulse motor, stepping motor, etc.), and is rotated by a stepping motor 33 in a direction that increases or decreases the angle with respect to the horizontal plane by exactly 30 minutes per pulse. and positioned.
前記した有底筒体２５は第２図に拡大して示したように
頂部スリット３５を備えた７Ｘ３７がとりつけてあって
、中央の空間内筒部の底部には、例えば赤外線などの発
光素子３９（発光ダイオード）と受光素子４１（受光ト
ランジスタ）が回動軸方向に並んで設けである。As shown in an enlarged view in FIG. 2, the aforementioned bottomed cylinder 25 is equipped with a 7x37 cylinder having a top slit 35, and a light emitting element 39, such as an infrared ray, is attached to the bottom of the cylinder inside the central space. (light emitting diode) and a light receiving element 41 (light receiving transistor) are arranged side by side in the rotation axis direction.
上記スリット３５は第２図に示した幅が例えば１ ｍｍ
で、回動軸方向には５ｍｍ程度の長さにしである。The width of the slit 35 shown in FIG. 2 is, for example, 1 mm.
The length is about 5 mm in the rotation axis direction.
本発明の板材折曲げ角度検知器２５を使用して板材Ｗを
所望の折曲げ角度αに折曲げるには以下に述べるように
行なう。The plate material W is bent to a desired bending angle α using the plate material bending angle detector 25 of the present invention as described below.
所望の折曲げ角αの半分が第１図の前方で跳ね上った板
材Ｗと折曲げ線２７とのなす角度であり、板材Ｗが折曲
げられる過程では７字形溝の肩部のまわりを回動するも
のである。Half of the desired bending angle α is the angle formed by the bending line 27 and the sheet material W that has jumped up in front of FIG. It rotates.
更に上記肩部の折曲げ線２７からの水平距離とボルスタ
５の上面からの高さ寸法、折曲げ＋Ｊ Ｗの厚さ、折曲
げ線２７と有底筒体２９の回転中心３１間の距離ａとボ
ルスタ５の上面からの高さ寸法、更に折曲げ板Ｗの弾性
係数の函数であるスプリングバック角度を加算して有底
筒体２９の回動角度を設定することができる。Furthermore, the horizontal distance from the bending line 27 of the shoulder, the height dimension from the top surface of the bolster 5, the thickness of the bending +JW, and the distance a between the bending line 27 and the center of rotation 31 of the bottomed cylindrical body 29. The rotation angle of the bottomed cylindrical body 29 can be set by adding the height dimension from the upper surface of the bolster 5 to the springback angle which is a function of the elastic modulus of the bending plate W.
かくて上型を下降させて板材を折曲げると、板材の前方
は上に跳ね上り、発光素子から光線がスリットを通過し
て板材の下面に直角に当り、直角に反射してスリットを
逆通過して受光素子に達する折曲げ角度に達すると、直
らに受光素子が上型の下降を停止して上昇復帰させるの
である。When the upper die is lowered and the plate is bent, the front side of the plate jumps upwards, and the light from the light emitting element passes through the slit, hits the bottom surface of the plate at right angles, is reflected at right angles, and passes back through the slit. When the bending angle reaches the light receiving element, the light receiving element immediately stops the lowering of the upper mold and returns to the upper mold.
この板材の跳ね上りの過程で、発光素子からの光線を直
角に受けて直角に反射してスリットを通過させるのは板
材が所望の角度に到達した時だけであるから折曲げ角度
が正確であることは云うまでもない。During this process of the board bouncing up, the bending angle is accurate because the light from the light emitting element is received at right angles, reflected at right angles, and passed through the slit only when the board reaches the desired angle. Needless to say.
［発明の効果コ
以上詳記したところから既に明らかなように、本発明の
技術思想を具現した非接触式の板材折曲げ角度検知器を
備えた板材折曲げ機は、非接触式であるから板材の底面
を損傷するおそれがなく、所望の折曲げ角度に合わせて
検知器を角度設定することが高精度に可能となった効果
を得たのである。[Effects of the Invention] As is already clear from the detailed description above, the sheet material bending machine equipped with a non-contact type sheet material bending angle detector that embodies the technical idea of the present invention is a non-contact type. The result is that there is no risk of damaging the bottom surface of the plate material, and the angle of the detector can be set with high precision to match the desired bending angle.
なお本発明の技術思想を逸脱することなく、設計変更が
容易であることも明らかである。It is also clear that design changes can be easily made without departing from the technical idea of the present invention.
第１図は本発明の実施例検知器まわりの断面図で第３図
のＩ−Ｉ断面矢視図である。
第２図は第１図の検知器の有底筒体の断面図、第３図は
本発明を実施した対象側機としての板材折曲げ機の正面
図である。
（図面の主要部を表わす符号の説明）
１・・・板材折曲機
７・・・下型
２３・・・上型
２５・・・検知器
２９・・・有底筒体
３３・・・歩進電動機
代理人 弁理士 三 好 保 男１・・・板材
折曲源
７・・・下で
２３・・・上フ
２５・・・検知ジ
第１１！１
第２図
第３図FIG. 1 is a cross-sectional view of a detector according to an embodiment of the present invention, and is a cross-sectional view taken along the line I--I in FIG. 3. FIG. 2 is a sectional view of the bottomed cylinder of the detector shown in FIG. 1, and FIG. 3 is a front view of a plate bending machine as a target side machine in which the present invention is implemented. (Explanation of symbols representing main parts of the drawings) 1... Plate bending machine 7... Lower die 23... Upper die 25... Detector 29... Bottomed cylindrical body 33... Step Susumu Electric Motor Agent Patent Attorney Yasu Miyoshi Male 1...Plate bending source 7...Bottom 23...Upper flap 25...Detection stage 11!1 Figure 2 Figure 3
Claims (1)
げ線と平行な軸のまわりを回動位置決め自在な有底筒体
を備え、該有底筒体の頂部にスリットを備えるとともに
底部にスリットを通して平行光線を折曲げた板材の面に
直角に照射する発光素子と、折曲げた板材の面から直角
に反射して前記したスリットを逆通過した光線を受光す
る受光素子とを備えた板材の折曲げ角度検知器にして、
前記有底筒体からの照射光線を水平面から所望の角度に
正確に回動位置決めする歩進電動機を設けたことを特徴
とする非接触式の板材折曲げ角度検知器。(1) A bottomed cylindrical body that can be rotated and positioned around an axis parallel to the bending line of the plate is provided at a fixed position on the bolster of the plate bending machine, and a slit is provided at the top of the bottomed cylindrical body. It includes a light emitting element that passes parallel light through a slit at the bottom and irradiates the surface of the bent plate at right angles, and a light receiving element that receives the light that is reflected at right angles from the surface of the bent plate and passes back through the slit. As a bending angle detector for bent plate materials,
A non-contact type plate material bending angle detector, characterized in that a stepping motor is provided to accurately rotate and position the irradiated light beam from the bottomed cylinder at a desired angle from a horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1575988A JPH01192421A (en) | 1988-01-28 | 1988-01-28 | Non-contact type detector for bent angle of plate material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1575988A JPH01192421A (en) | 1988-01-28 | 1988-01-28 | Non-contact type detector for bent angle of plate material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01192421A true JPH01192421A (en) | 1989-08-02 |
Family
ID=11897709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1575988A Pending JPH01192421A (en) | 1988-01-28 | 1988-01-28 | Non-contact type detector for bent angle of plate material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01192421A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992005892A1 (en) * | 1990-10-05 | 1992-04-16 | Komatsu Ltd. | Metal sheet bending machine |
| US5531087A (en) * | 1990-10-05 | 1996-07-02 | Kabushiki Kaisha Komatsu Seisakusho | Metal sheet bending machine |
| JP2001347320A (en) * | 2000-06-05 | 2001-12-18 | Amada Co Ltd | Method and apparatus for bending |
-
1988
- 1988-01-28 JP JP1575988A patent/JPH01192421A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992005892A1 (en) * | 1990-10-05 | 1992-04-16 | Komatsu Ltd. | Metal sheet bending machine |
| US5367902A (en) * | 1990-10-05 | 1994-11-29 | Komatsu Ltd. | Metal sheet bending machine |
| US5531087A (en) * | 1990-10-05 | 1996-07-02 | Kabushiki Kaisha Komatsu Seisakusho | Metal sheet bending machine |
| JP2001347320A (en) * | 2000-06-05 | 2001-12-18 | Amada Co Ltd | Method and apparatus for bending |
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