JP2002059217A - Bending angle detection method in plate bending machine and bending detection apparatus used for the method - Google Patents
Bending angle detection method in plate bending machine and bending detection apparatus used for the methodInfo
- Publication number
- JP2002059217A JP2002059217A JP2000242956A JP2000242956A JP2002059217A JP 2002059217 A JP2002059217 A JP 2002059217A JP 2000242956 A JP2000242956 A JP 2000242956A JP 2000242956 A JP2000242956 A JP 2000242956A JP 2002059217 A JP2002059217 A JP 2002059217A
- Authority
- JP
- Japan
- Prior art keywords
- bending
- angle
- sensor
- upper die
- detecting
- 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.)
- Granted
Links
- 238000005452 bending Methods 0.000 title claims abstract description 112
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 16
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 244000261422 Lysimachia clethroides Species 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/006—Bending sheet metal along straight lines, e.g. to form simple curves combined with measuring of bends
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は板材折曲げ加工機に
おける折曲げ角度検出方法および同方法に用いる折曲げ
角度検出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting a bending angle in a sheet bending machine and a bending angle detecting device used for the method.
【０００２】[0002]
【従来の技術】折曲げ角度検出装置としては、図１１に
示すように、上型１０１とＶ曲げ用の下型１０３のＶ溝
の近傍に板材Ｗの折曲げ辺１０５の移動に追従して出没
する接触子１０７を設け、この接触子１０７の突出量ｈ
を計測することによって、板材Ｗの折曲げ角度αを、 α＝２θ１＝2tan−１(l/h) として検出するようにしたものが公知である。2. Description of the Related Art As shown in FIG. 11, a bending angle detecting device follows a movement of a bending side 105 of a plate material W near a V groove of an upper die 101 and a lower die 103 for V bending. A contact 107 is provided which protrudes and retracts, and the protrusion amount h of the contact 107
Is known so as to detect the bending angle α of the plate material W as α = 2θ 1 = 2tan −1 (l / h) by measuring the bending angle α.
【０００３】また、図１２に示すように、上述の接触子
１０７に代えて、板材Ｗの折曲げ辺１０５に対してレー
ザ光ＬＢを照射して、このレーザ光ＬＢの折曲げ辺１０
５からの反射光を捕らえ、その反射光の強度からレーザ
光ＬＢの照射角度が直角になるときの角度θ１を検出
し、折曲げ角度αを、α＝２θ１として検出するように
したものもある（例えば、ＷＯ９７／３０３２７公
報）。As shown in FIG. 12, a laser beam LB is applied to a bent side 105 of a plate material W in place of the above-mentioned contact 107, and the bent side 10 of the laser beam LB is irradiated.
5 that captures the reflected light from No. 5 and detects the angle θ 1 when the irradiation angle of the laser beam LB becomes a right angle from the intensity of the reflected light, and detects the bending angle α as α = 2θ 1 (For example, WO97 / 30327).
【０００４】[0004]
【発明が解決しようとする課題】上述の折曲げ角度検出
装置は共に片側の折曲げ辺１０５の金型の仮想中心線Ｃ
Ｌに対する角度θ１を求め、折曲げ角度αを、α＝２θ
１としている。しかし、θ１＝θ２の場合はこれでよい
が、θ１≠θ２の場合には正しい折曲げ角度αを求める
ことができない。The above-mentioned bending angle detecting device is used for both the imaginary center line C of the mold and the bending side 105 on one side.
The angle θ 1 with respect to L is obtained, and the bending angle α is calculated as α = 2θ
It is set to 1 . However, if θ 1 = θ 2 , this is sufficient, but if θ 1 ≠ θ 2 , the correct bending angle α cannot be obtained.
【０００５】また、上述の方法は測定時には、曲げ加工
を一時停止して行うため、タクトタイムが長くなるとい
う問題もある。In addition, the above-described method has a problem that the tact time becomes long because the bending is temporarily stopped during the measurement.
【０００６】本発明は上述の如き問題を解決するために
成されたものであり、本発明の課題は、プレスブレーキ
などによる板材折曲げ加工において、曲げ中心線に対す
る前後の折曲げ角度が異なる場合でも、折曲げ角度を正
確に検出可能な折曲げ角度検出方法および同方法に用い
る折曲げ角度検出装置を提供することである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a sheet material bending method using a press brake or the like in which the bending angle before and after the bending center line is different. However, an object of the present invention is to provide a bending angle detection method capable of accurately detecting a bending angle and a bending angle detection device used in the method.
【０００７】[0007]
【課題を解決するための手段】上述の課題を解決する手
段として請求項１に記載の板材折曲げ加工機における折
曲げ角度検出方法は、Ｖ溝を備えた下型と該下型のＶ溝
に係合する上型とを備えた板材折曲げ加工機において、
前記上型内部に前後それぞれの折曲げ角度を検出する角
度検出装置を設け、該角度検出装置によって前後の折曲
げ角度を別個に検出し、該前後の折曲げ角度の和を求め
て被加工材の折曲げ角度を検出することを要旨とするも
のである。According to a first aspect of the present invention, there is provided a method for detecting a bending angle in a sheet material bending machine, comprising: a lower mold having a V-groove; and a V-groove of the lower mold. In a plate bending machine having an upper die and a
An angle detecting device for detecting each of the front and rear bending angles is provided inside the upper die, the front and rear bending angles are separately detected by the angle detecting device, and the sum of the front and rear bending angles is obtained to obtain a work material. The gist of the present invention is to detect the bending angle of the.
【０００８】請求項２に記載の板材折曲げ加工機におけ
る折曲げ角度検出方法は、請求項１に記載の発明におい
て、前記角度検出装置は、前記上型の中心線上において
該上型の前後方向に揺動可能に軸支され、前記被加工材
の折曲げ辺との距離の変位を接触検出する変位検出セン
サと、該変位検出センサを揺動させるサーボモータと、
前記変位検出センサの回転角を検出する回転角センサと
からなることを要旨とするものである。According to a second aspect of the present invention, there is provided a plate material bending machine for detecting a bending angle, wherein the angle detecting device is arranged such that the angle detecting device is disposed on the center line of the upper die in the front-rear direction of the upper die. A displacement detection sensor that is pivotally supported on the workpiece and detects a displacement of a distance from the bent side of the workpiece, and a servomotor that swings the displacement detection sensor;
The gist of the present invention comprises a rotation angle sensor for detecting a rotation angle of the displacement detection sensor.
【０００９】請求項３に記載の板材折曲げ加工機におけ
る折曲げ角度検出方法は、請求項１に記載の発明におい
て、前記角度検出装置は、折曲げ辺をスキャニングする
レーザビームスキャナと、前記被加工材の折曲げ辺から
の反射光の強弱を検出する受光センサと、前記レーザビ
ームスキャナの回転角度を検出する回転角センサとから
なることを要旨とするものである。According to a third aspect of the present invention, there is provided a method for detecting a bending angle in a plate material bending machine, wherein the angle detecting device comprises: a laser beam scanner for scanning a bending side; The gist comprises a light receiving sensor for detecting the intensity of light reflected from the bent side of the workpiece and a rotation angle sensor for detecting a rotation angle of the laser beam scanner.
【００１０】請求項４に記載の板材折曲げ加工機におけ
る折曲げ角度検出装置は、Ｖ溝を備えた下型と該下型の
Ｖ溝に係合する上型とを備えた板材折曲げ加工機におい
て、前記上型内部に前後それぞれの折曲げ角度を検出す
る角度検出装置を設け、該前後の折曲げ角度に基づいて
被加工材の折曲げ角度を算出する演算手段を設けたこと
を要旨とするものである。According to a fourth aspect of the present invention, there is provided a plate material bending machine for bending a plate material, comprising: a lower die having a V-shaped groove; and an upper die engaged with the V-shaped groove of the lower die. In the machine, an angle detecting device for detecting each of the front and rear bending angles is provided inside the upper die, and a calculating means for calculating a bending angle of the workpiece based on the front and rear bending angles is provided. It is assumed that.
【００１１】請求項５に記載の板材折曲げ加工機におけ
る折曲げ角度検出装置は、請求項４に記載の発明におい
て、前記角度検出装置は、前記上型の中心線上において
該上型の前後方向に揺動可能に軸支され、前記被加工材
の折曲げ辺との距離の変位を接触検出する変位検出セン
サと、該変位検出センサを揺動させるサーボモータと、
前記変位検出センサの回転角を検出する回転角センサと
からなることを要旨とするものである。According to a fifth aspect of the present invention, the bending angle detecting device in the plate material bending machine according to the fourth aspect of the present invention is arranged such that the angle detecting device is disposed on the center line of the upper die in the front-rear direction of the upper die. A displacement detection sensor that is pivotally supported on the workpiece and detects a displacement of a distance from the bent side of the workpiece, and a servomotor that swings the displacement detection sensor;
The gist of the present invention comprises a rotation angle sensor for detecting a rotation angle of the displacement detection sensor.
【００１２】請求項６に記載の板材折曲げ加工機におけ
る折曲げ角度検出装置は、請求項４に記載の発明におい
て、前記変位検出センサがポテンショメータであること
を要旨とするものである。According to a sixth aspect of the present invention, in the bending angle detecting device for a sheet bending machine, the displacement detecting sensor is a potentiometer.
【００１３】請求項７に記載の板材折曲げ加工機におけ
る折曲げ角度検出装置は、請求項４に記載の発明におい
て、前記角度検出装置は、折曲げ辺をスキャニングする
レーザビームスキャナと、前記被加工材の折曲げ辺から
の反射光の強弱を検出する受光センサと、前記レーザビ
ームスキャナの回転角度を検出する回転角センサとから
なることを要旨とするものである。According to a seventh aspect of the present invention, in the plate material bending machine, the bending angle detecting device includes a laser beam scanner that scans a bending side, and the bending angle detecting device. The gist comprises a light receiving sensor for detecting the intensity of light reflected from the bent side of the workpiece and a rotation angle sensor for detecting a rotation angle of the laser beam scanner.
【００１４】[0014]
【発明の実施の形態】以下本発明の実施の形態を図面に
よって説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１５】図１は、本発明に係る折曲げ角度検出装置
を備えたＶ曲げ用の上型１を示したものである。なお説
明の便宜上、図２に示すように上型１ａのＶ字形の先端
を通ると共に、下型２のＶ溝中心を通る直線をＹ軸にと
り、Ｙ軸に直交するＸ軸を前後方向にとり、Ｘ−Ｙ軸に
直交する方向（紙面に直交する方向）をＺ軸とする。FIG. 1 shows an upper mold 1 for V bending provided with a bending angle detecting device according to the present invention. For convenience of explanation, a straight line passing through the V-shaped tip of the upper mold 1a and passing through the center of the V groove of the lower mold 2 is taken as the Y axis as shown in FIG. 2, and an X axis orthogonal to the Y axis is taken in the front-back direction. A direction orthogonal to the XY axis (a direction orthogonal to the paper surface) is defined as a Z axis.
【００１６】図１は、分割された上型（分割型）１
（ａ，ｂ）を２個連結して使用する場合を示したもので
あり、それぞれの上型１（ａ，ｂ）に折曲げ角度検出装
置３が設けてある。上型１（ａ，ｂ）は同一の構成であ
るので、以後上型１ａについて説明する。FIG. 1 shows a divided upper mold (divided mold) 1
This shows a case where two (a, b) are connected and used, and a bending angle detecting device 3 is provided in each upper mold 1 (a, b). Since the upper mold 1 (a, b) has the same configuration, the upper mold 1a will be described below.
【００１７】図２および図３を参照するに、折曲げ角度
検出装置３は前記上型１ａの下端部に設けた空洞５に取
付けてある。この折曲げ角度検出装置３には、被加工材
Ｗの折曲げ辺４（ｆ，ｒ）の曲げ角度の変位を検出する
ための変位検出センサとして、直線摺動型のポテンショ
メータ７が設けてある。Referring to FIGS. 2 and 3, the bending angle detecting device 3 is mounted in a cavity 5 provided at the lower end of the upper die 1a. The bending angle detecting device 3 is provided with a linear sliding type potentiometer 7 as a displacement detecting sensor for detecting a displacement of a bending angle of the bending side 4 (f, r) of the workpiece W. .
【００１８】上述の直線摺動型のポテンショメータ７の
ハウジング９は、前記上型１ａの中心線１５上に、かつ
Ｚ軸方向に設けたサーボモータ１１の回転軸１３に取付
てある。The housing 9 of the above-mentioned linear sliding potentiometer 7 is mounted on the center line 15 of the upper die 1a and on the rotary shaft 13 of the servomotor 11 provided in the Z-axis direction.
【００１９】前記サーボモータ１１には、回転軸１３の
回転角を検出するため、例えば、ロータリーエンコーダ
の如き回転角センサ（図示省略）が同軸に設けてある。The servomotor 11 is provided coaxially with a rotation angle sensor (not shown) such as a rotary encoder for detecting the rotation angle of the rotation shaft 13.
【００２０】前記直線摺動型のポテンショメータ７に
は、出没自在の可動体１７が設けてあり、この可動体１
７の先端には、被加工材Ｗの折曲げ辺に接触する球状の
接触子１９が設けてある。The linear sliding type potentiometer 7 is provided with a movable body 17 which can be moved in and out.
7 is provided with a spherical contact 19 that contacts the bent side of the workpiece W.
【００２１】上述の可動体１７は、前記ハウジング９内
に設けたスプリング２１によって、適宜な力で常にハウ
ジング９から突出するように付勢してあると同時に、可
動体１７のほぼ中間位置に設けたフランジ２３でその突
出量が規制してある。The movable body 17 is urged by a spring 21 provided in the housing 9 so as to always protrude from the housing 9 with an appropriate force, and at the same time, is provided at a substantially intermediate position of the movable body 17. The protrusion amount is regulated by the flange 23.
【００２２】上記構成の折曲げ角度検出装置３におい
て、図４に示すように、例えば９０°のＶ曲げ加工を行
ったとき、サーボモータ１１を回転角度２２０°から約
１００°反時計方向に回動させ、接触子１９と被加工材
Ｗとの接触位置が、ａ，ｂ，ｃ，ｄ，ｅ，ｆ，ｇと移動
したときの各位置におけるポテンショメータ７の出力電
圧は図５に示すように変化する。なお、位置ｂとｆにお
いては、ポテンショメータ７と被加工材Ｗとは直角であ
るものとする。In the bending angle detecting device 3 having the above structure, as shown in FIG. 4, when a 90 ° V-bending process is performed, the servo motor 11 is turned counterclockwise by about 100 ° from a rotation angle of 220 °. When the contact position between the contact 19 and the workpiece W is moved to a, b, c, d, e, f, and g, the output voltage of the potentiometer 7 at each position is as shown in FIG. Change. At positions b and f, the potentiometer 7 and the workpiece W are at right angles.
【００２３】図５のグラフから明らかなように、ポテン
ショメータ７と被加工材Ｗとが直角のとき、ポテンショ
メータ７の出力電圧が最大となる。すなわち、直線摺動
型のポテンショメータ７において、可動体１７の突出量
が最小のとき、出力電圧が最大となるように設定してあ
るからである。As is clear from the graph of FIG. 5, when the potentiometer 7 and the workpiece W are at a right angle, the output voltage of the potentiometer 7 becomes maximum. That is, in the linear sliding potentiometer 7, the output voltage is set to be maximum when the amount of protrusion of the movable body 17 is minimum.
【００２４】図６に示す如く、前記中心線１５に対する
前側の折曲げ辺４ｆと、後ろ側の折曲げ辺４ｒがなす角
をそれぞれθ１、θ２とし、ポテンショメータ７の出力
電圧が最大のときのポテンショメータ７と中心線１５と
がなす角をそれぞれα１、α ２ とすると、前後の折曲
げ角度θは、次の式（１）、（２）および（３）によっ
て求めることができる。As shown in FIG.
Angle formed by front bent side 4f and rear bent side 4r
To θ1, Θ2And the output of potentiometer 7
Potentiometer 7 and center line 15 when voltage is maximum
The angle between each is α1, Α 2 Then, the front and back bending
Angle θ is calculated by the following equations (1), (2) and (3).
You can ask.
【００２５】[0025]
【数１】θ＝θ１＋θ２…………（１）[Equation 1] θ = θ 1 + θ 2 (1)
【数２】θ１＝９０°−α１……（２）[Equation 2] θ 1 = 90 ° −α 1 (2)
【数３】θ２＝９０°−α２……（３）なお、上記数式
の演算および演算結果の表示は、公知のＣＮＣ制御装置
（図示省略）を使用することができる。Equation 2 θ 2 = 90 ° −α 2 (3) It should be noted that a known CNC control device (not shown) can be used for the calculation of the above formula and the display of the calculation result.
【００２６】図７は板材折曲げ加工機における折曲げ角
度検出装置の第二の実施の形態を示したものであり、折
曲げ角度検出装置３としての直線摺動型のポテンショメ
ータ７に代えてレーザビームスキャナを使用するもので
ある。FIG. 7 shows a second embodiment of a bending angle detecting device in a plate material bending machine, and a laser is used in place of the linear sliding type potentiometer 7 as the bending angle detecting device 3. A beam scanner is used.
【００２７】折曲げ辺４（ｆ，ｒ）をレーザビームスキ
ャナでスキャニングし、その反射光の強度が最大になる
位置のスキャナの回転角度（α１ ，α２ ）を検出し、
前後の折曲げ角度（θ１，θ２）を前記数式（２）、
（３）により算出し、折曲げ角度θを、θ＝θ１＋θ２
として求めるものである。The bent side 4 (f, r) is scanned by a laser beam scanner, and the rotation angle (α 1 , α 2 ) of the scanner at the position where the intensity of the reflected light is maximized is detected.
The front and rear bending angles (θ 1 , θ 2 ) are calculated by the above formula (2),
The bending angle θ is calculated by (3), and θ = θ 1 + θ 2
Is what you want.
【００２８】図７に示す如く、前記上型１ａの内部の下
端部近傍には、Ｖ字形の先端を通る中心線１５（＝Ｙ
軸）に直交するＺ軸上に回転軸を有する回転ミラー３１
を備えたレーザビームスキャナ３０が回転可能に設けて
ある。As shown in FIG. 7, near the lower end inside the upper die 1a, a center line 15 (= Y) passing through a V-shaped tip is provided.
Mirror 31 having a rotation axis on the Z-axis orthogonal to (axis)
Is provided rotatably.
【００２９】レーザビームスキャナ３０は、例えばガラ
ス製円柱の端部を４５°にカットしてレーザビームを反
射させる鏡面に形成した回転ミラー３１と、この回転ミ
ラー３１を回転駆動するサーボモータ３３と、サーボモ
ータ３３の回転角度を検出するロータリーエンコーダ３
５、サーボモータ３３の回転を回転ミラー３１へ伝達す
るプーリーおよびベルトなどの回転伝達手段３７などか
らなっている。The laser beam scanner 30 includes, for example, a rotating mirror 31 formed by cutting an end of a glass cylinder at 45 ° and forming a mirror surface for reflecting a laser beam, a servo motor 33 for rotating and driving the rotating mirror 31, Rotary encoder 3 for detecting rotation angle of servo motor 33
5. It is composed of a rotation transmitting means 37 such as a pulley and a belt for transmitting the rotation of the servo motor 33 to the rotating mirror 31.
【００３０】また、上述の上型１ａの内部には、回転ミ
ラー３１へレーザビームを入射するためのレーザ発振器
３９と回転ミラー３１からの反射光を検出する受光セン
サ４１が設けてある。Further, inside the upper die 1a, there are provided a laser oscillator 39 for inputting a laser beam to the rotating mirror 31, and a light receiving sensor 41 for detecting light reflected from the rotating mirror 31.
【００３１】レーザ発振器３９から出たレーザビームＬ
Ｂは、前記回転ミラー３１の回転軸に同軸に設けた光軸
４３上に配置した全反射ミラー４５を介して回転ミラー
３１へ入射されるように設けてある。The laser beam L emitted from the laser oscillator 39
B is provided so as to be incident on the rotating mirror 31 via a total reflection mirror 45 disposed on an optical axis 43 provided coaxially with the rotating axis of the rotating mirror 31.
【００３２】また、被加工材Ｗの曲げ辺４（ｆ，ｒ）か
らの反射光ＬＢ’は、回転ミラー３１で直角に反射され
て、光軸４３を戻って前記光軸４３上に配置した半透過
ミラー（ハーフミラー）４７を介して受光センサ４１に
入射されるよう設けてある。なお、前記上型１ａの下端
部には、レーザビームスキャナ３０からのレーザビーム
ＬＢが被加工材Ｗの曲げ辺に照射可能な開口（図示省
略）が設けてある。The reflected light LB 'from the bent side 4 (f, r) of the workpiece W is reflected at a right angle by the rotating mirror 31, returns to the optical axis 43, and is arranged on the optical axis 43. It is provided so as to be incident on the light receiving sensor 41 via a semi-transmissive mirror (half mirror) 47. An opening (not shown) through which the laser beam LB from the laser beam scanner 30 can irradiate the bent side of the workpiece W is provided at the lower end of the upper die 1a.
【００３３】上記構成において、レーザビームスキャナ
３０を回転させることにより、回転ミラー３１に入射さ
れたレーザビームＬＢは、Ｘ−Ｙ平面内を３６０°の全
方位に偏向されるので、この偏向されたレーザビームＬ
Ｂで前後の折曲げ辺４（ｆ，ｒ）をスキャニングし、そ
の反射光ＬＢ’の強度が最大になる位置のレーザビーム
スキャナ３０の回転角度（α１ ，α２ ）を受光センサ
４１により検出し、前後の折曲げ角度（θ１，θ２）を
前記数式（２）、（３）により算出し、折曲げ角度θ
を、θ＝θ１＋θ２ として求めることができる。In the above configuration, the laser beam LB incident on the rotating mirror 31 is deflected in all directions of 360 ° in the XY plane by rotating the laser beam scanner 30. Laser beam L
B, the front and rear bent sides 4 (f, r) are scanned, and the rotation angle (α 1 , α 2 ) of the laser beam scanner 30 at the position where the intensity of the reflected light LB ′ is maximized is detected by the light receiving sensor 41. Then, the front and rear bending angles (θ 1 , θ 2 ) are calculated by the above formulas (2) and (3), and the bending angle θ
Can be obtained as θ = θ 1 + θ 2 .
【００３４】上記数式の演算および演算結果の表示は、
前述のように公知のＣＮＣ制御装置を使用することがで
きる。The calculation of the above formula and the display of the calculation result are as follows.
As described above, a known CNC control device can be used.
【００３５】レーザビームＬＢでスキャニングする上述
の方法は、レーザビームスキャナ３０を高速回転させる
ことによって、折曲げ角度θの測定時に板材折曲げ加工
機の運転を一時停止することなく連続測定をすることが
可能である。The above-described method of scanning with the laser beam LB is to perform continuous measurement without suspending the operation of the sheet bending machine when measuring the bending angle θ by rotating the laser beam scanner 30 at high speed. Is possible.
【００３６】図９および図１０は、グースネック型の上
型にレーザビームスキャナ３０を装着する場合のレーザ
発振器３９並びに受光センサ４１などの配置例であり、
上型１の上方に配置したサーボモータ３３の回転は、中
間にアイドラー４９を設けたベルト３７を介して回転ミ
ラー３１に伝達するように設けてある。レーザ発振器３
９と受光センサ４１は、上型１ａ下部に斜めに配置して
ある。FIGS. 9 and 10 show examples of the arrangement of the laser oscillator 39 and the light receiving sensor 41 when the laser beam scanner 30 is mounted on the gooseneck type upper die.
The rotation of the servo motor 33 disposed above the upper die 1 is provided to be transmitted to the rotating mirror 31 via a belt 37 provided with an idler 49 in the middle. Laser oscillator 3
9 and the light receiving sensor 41 are arranged obliquely below the upper die 1a.
【００３７】[0037]
【発明の効果】請求項１、請求項２、請求項４、請求項
５または請求項６に記載の発明によれれば、折曲げ辺の
中心線に対する前後の曲げ角度をそれぞれ別個に検出
し、検出した前後の角度の和を求めて折り曲げ角度を検
出するので、曲げ中心線に対する前後の折曲げ角度が異
なる場合でも、正確な折曲げ角度を検出することができ
る。According to the first, second, fourth, fifth or sixth aspect of the present invention, the front and rear bending angles with respect to the center line of the bent side are separately detected. Since the bending angle is detected by calculating the sum of the detected front and rear angles, an accurate bending angle can be detected even when the front and rear bending angles with respect to the bending center line are different.
【００３８】請求項３または請求項７に記載の発明によ
れれば、上述の効果に加えて折曲げ加工中においても連
続的に折曲げ角度を検出することができる。According to the third or seventh aspect of the present invention, in addition to the above-described effects, the bending angle can be continuously detected even during the bending process.
【図１】本発明に係る折曲げ角度検出装置３を備えたＶ
曲げ用の上型１の斜視図。FIG. 1 shows a V equipped with a bending angle detecting device 3 according to the present invention.
FIG. 2 is a perspective view of an upper mold 1 for bending.
【図２】図１のII-II線に沿って見た部分断面図。FIG. 2 is a partial sectional view taken along the line II-II in FIG.
【図３】図１および図２における折曲げ角度検出装置３
の拡大説明図。FIG. 3 is a bending angle detecting device 3 in FIGS. 1 and 2;
FIG.
【図４】折曲げ角度検出装置３の動作説明図。FIG. 4 is an explanatory diagram of the operation of the bending angle detection device 3.
【図５】変位検出センサ（直線摺動型のポテンショメー
タ）の変位と出力電圧の関係を示したグラフ。FIG. 5 is a graph showing a relationship between a displacement of a displacement detection sensor (a linear sliding type potentiometer) and an output voltage.
【図６】変位検出センサの上型の中心線１５に対する角
度（α１、α２）と、折曲げ辺の中心線１５に対する角
度（θ１、θ２）との関係を示した図。FIG. 6 is a view showing a relationship between angles (α 1 , α 2 ) of the displacement detection sensor with respect to the center line 15 of the upper die and angles (θ 1 , θ 2 ) of the bent side with respect to the center line 15;
【図７】本発明に係る折曲げ角度検出装置の第二の実施
の形態の説明図。FIG. 7 is an explanatory diagram of a bending angle detection device according to a second embodiment of the present invention.
【図８】レーザビームスキャナの上型の中心線１５に対
する角度（α１、α２）と、折曲げ辺の中心線１５に対
する角度（θ１、θ２）との関係を示した図。FIG. 8 is a diagram showing a relationship between angles (α 1 , α 2 ) of the upper die of the laser beam scanner with respect to the center line 15 and angles (θ 1 , θ 2 ) of the bent side with respect to the center line 15.
【図９】本発明に係る折曲げ角度検出装置の第二の実施
の形態をグースネック形の上型に適用した場合の配置
例。FIG. 9 is an arrangement example in which the second embodiment of the bending angle detecting device according to the present invention is applied to a gooseneck type upper die.
【図１０】本発明に係る折曲げ角度検出装置の第二の実
施の形態をグースネック形の上型に適用した場合の配置
例。FIG. 10 is an example of an arrangement in which the second embodiment of the bending angle detection device according to the present invention is applied to a gooseneck type upper die.
【図１１】片方の折曲げ辺に接触する接触子で折曲げ角
度を検出する公知例の説明図。FIG. 11 is an explanatory diagram of a known example in which a bending angle is detected by a contact that contacts one bending side.
【図１２】片方の折曲げ辺に対して、レーザ光を照射し
てその反射光から折曲げ角度を検出する公知例の説明
図。FIG. 12 is an explanatory view of a known example in which one bending side is irradiated with laser light and the bending angle is detected from the reflected light.
１（ａ，ｂ） 上型（分割型） ２ 下型 ３ 折曲げ角度検出装置 ４（ｆ，ｒ） 折曲げ辺 ５ 空洞 ７ ポテンショメータ ９ ハウジング １１ サーボモータ １３ 回転軸 １５ 中心線 １７ 可動体 １９ 接触子 ２１ スプリング ２３ フランジ ３０ レーザビームスキャナ ３１ 回転ミラー ３３ サーボモータ ３５ ロータリーエンコーダ ３７ 回転伝達手段 ３９ レーザ発振器 ４１ 受光センサ ４３ 光軸 ４５ 全反射ミラー ４７ 半透過ミラー（ハーフミラー） ４９ アイドラー θ 折曲げ角度 ＬＢ レーザビーム Ｗ 被加工材 Reference Signs List 1 (a, b) Upper die (split type) 2 Lower die 3 Bending angle detector 4 (f, r) Bending side 5 Cavity 7 Potentiometer 9 Housing 11 Servo motor 13 Rotation axis 15 Center line 17 Moving body 19 Contact Element 21 Spring 23 Flange 30 Laser beam scanner 31 Rotating mirror 33 Servo motor 35 Rotary encoder 37 Rotation transmitting means 39 Laser oscillator 41 Light receiving sensor 43 Optical axis 45 Total reflection mirror 47 Semi-transmissive mirror (half mirror) 49 Idler θ Bending angle LB Laser beam W Workpiece
フロントページの続き Ｆターム(参考） 2F062 AA02 AA74 AA81 BB14 BC31 CC27 EE01 EE22 EE42 EE62 FF07 FG07 GG64 HH05 HH13 HH21 HH32 JJ04 JJ08 2F065 AA33 BB13 CC06 DD03 DD06 FF42 GG04 HH04 KK01 LL11 LL62 2F069 AA02 AA06 AA73 AA83 BB01 CC06 DD12 DD15 GG02 GG04 GG06 GG07 GG62 HH02 HH30 JJ10 LL02 LL11 MM04 MM32 NN09 QQ05 4E063 AA01 BA07 FA05 LA08 Continued on the front page F-term (reference) 2F062 AA02 AA74 AA81 BB14 BC31 CC27 EE01 EE22 EE42 EE62 FF07 FG07 GG64 HH05 HH13 HH21 HH32 JJ04 JJ08 2F065 AA33 BB13 CC06 DD03 DD06 FF42 GG04 HH83A01 A0233 GG02 GG04 GG06 GG07 GG62 HH02 HH30 JJ10 LL02 LL11 MM04 MM32 NN09 QQ05 4E063 AA01 BA07 FA05 LA08
Claims (7)
する上型とを備えた板材折曲げ加工機において、前記上
型内部に前後それぞれの折曲げ角度を検出する角度検出
装置を設け、該角度検出装置によって前後の折曲げ角度
を別個に検出し、該前後の折曲げ角度の和を求めて被加
工材の折曲げ角度を検出することを特徴とする板材折曲
げ加工機における折曲げ角度検出方法。1. A plate material bending machine comprising a lower die having a V-groove and an upper die engaged with the V-groove of the lower die, wherein each bending angle of the front and rear is detected inside the upper die. An angle detecting device is provided, wherein the angle detecting device separately detects the front and rear bending angles, and detects the bending angle of the workpiece by calculating the sum of the front and rear bending angles. Bending angle detection method in bending machine.
度検出装置は、前記上型の中心線上において該上型の前
後方向に揺動可能に軸支され、前記被加工材の折曲げ辺
との距離の変位を接触検出する変位検出センサと、該変
位検出センサを揺動させるサーボモータと、前記変位検
出センサの回転角を検出する回転角センサとからなるこ
とを特徴とする板材折曲げ加工機における折曲げ角度検
出方法。2. The invention according to claim 1, wherein the angle detection device is pivotally supported on a center line of the upper die so as to be swingable in a front-rear direction of the upper die, and a bent side of the work material. A bending sensor comprising: a displacement detection sensor for detecting a displacement of a distance from the sensor; a servomotor for swinging the displacement detection sensor; and a rotation angle sensor for detecting a rotation angle of the displacement detection sensor. Bending angle detection method for processing machines.
度検出装置は、折曲げ辺をスキャニングするレーザビー
ムスキャナと、前記被加工材の折曲げ辺からの反射光の
強弱を検出する受光センサと、前記レーザビームスキャ
ナの回転角度を検出する回転角センサとからなることを
特徴とする板材折曲げ加工機における折曲げ角度検出方
法。3. The angle detecting device according to claim 1, wherein the angle detecting device is a laser beam scanner that scans a bent side, and a light receiving sensor that detects the intensity of light reflected from the bent side of the workpiece. And a rotation angle sensor for detecting a rotation angle of the laser beam scanner.
する上型とを備えた板材折曲げ加工機において、前記上
型内部に前後それぞれの折曲げ角度を検出する角度検出
装置を設け、該前後の折曲げ角度に基づいて被加工材の
折曲げ角度を算出する演算手段を設けたことを特徴とす
る板材折曲げ加工機における折曲げ角度検出装置。4. A plate material bending machine provided with a lower die having a V-groove and an upper die engaged with the V-groove of the lower die, wherein each of the front and rear bending angles is detected inside the upper die. A bending angle detecting device for a plate bending machine, comprising: an angle detecting device; and calculating means for calculating a bending angle of a workpiece based on the front and rear bending angles.
度検出装置は、前記上型の中心線上において該上型の前
後方向に揺動可能に軸支され、前記被加工材の折曲げ辺
との距離の変位を接触検出する変位検出センサと、該変
位検出センサを揺動させるサーボモータと、前記変位検
出センサの回転角を検出する回転角センサとからなるこ
とを特徴とする板材折曲げ加工機における折曲げ角度検
出装置。5. The angle detection device according to claim 4, wherein the angle detection device is pivotally supported on a center line of the upper die so as to be swingable in a front-rear direction of the upper die, and a bent side of the workpiece is provided. A bending sensor comprising: a displacement detection sensor for detecting a displacement of a distance from the sensor; a servomotor for swinging the displacement detection sensor; and a rotation angle sensor for detecting a rotation angle of the displacement detection sensor. Bending angle detection device in processing machines.
位検出センサがポテンショメータであることを特徴とす
る板材折曲げ加工機における折曲げ角度検出装置。6. A bending angle detecting device in a plate bending machine according to claim 4, wherein said displacement detecting sensor is a potentiometer.
度検出装置は、折曲げ辺をスキャニングするレーザビー
ムスキャナと、前記被加工材の折曲げ辺からの反射光の
強弱を検出する受光センサと、前記レーザビームスキャ
ナの回転角度を検出する回転角センサとからなることを
特徴とする板材折曲げ加工機における折曲げ角度検出装
置。7. The angle detecting device according to claim 4, wherein the angle detecting device scans a bent side, and a light receiving sensor detects intensity of light reflected from the bent side of the workpiece. And a rotation angle sensor for detecting a rotation angle of the laser beam scanner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000242956A JP4656703B2 (en) | 2000-08-10 | 2000-08-10 | Bending angle detection method and bending angle detection apparatus used for the same in a sheet metal bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000242956A JP4656703B2 (en) | 2000-08-10 | 2000-08-10 | Bending angle detection method and bending angle detection apparatus used for the same in a sheet metal bending machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002059217A true JP2002059217A (en) | 2002-02-26 |
| JP4656703B2 JP4656703B2 (en) | 2011-03-23 |
Family
ID=18733891
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|---|---|---|---|
| JP2000242956A Expired - Fee Related JP4656703B2 (en) | 2000-08-10 | 2000-08-10 | Bending angle detection method and bending angle detection apparatus used for the same in a sheet metal bending machine |
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