WO2015129459A1 - プレスブレーキ - Google Patents
プレスブレーキ Download PDFInfo
- Publication number
- WO2015129459A1 WO2015129459A1 PCT/JP2015/053732 JP2015053732W WO2015129459A1 WO 2015129459 A1 WO2015129459 A1 WO 2015129459A1 JP 2015053732 W JP2015053732 W JP 2015053732W WO 2015129459 A1 WO2015129459 A1 WO 2015129459A1
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- WIPO (PCT)
- Prior art keywords
- side frames
- strain
- press brake
- strain detection
- detection sensors
- Prior art date
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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
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0272—Deflection compensating means
-
- 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
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0209—Tools therefor
Definitions
- the present invention relates to a press brake, and more particularly, to a press brake having a function of accurately detecting a vertical deflection amount (distortion amount) of left and right side frames in the press brake.
- the press brake has an upper table on the upper side of the left and right side frames having a C gap, and a lower table facing the upper table in the vertical direction is provided on the lower side of the left and right side frames.
- An appropriate one of the upper and lower tables is provided as a ram so as to freely move up and down, and left and right vertical drive means for moving the ram up and down are provided in the both side frames.
- the pressure applied by the vertical drive means is calculated by detecting the amount of vertical distortion (deflection amount) of the left and right side frames, and the pressure applied by the vertical drive means is controlled based on the calculation result.
- Related techniques are exemplified in Japanese Patent Publication Nos. 5-57353 (Patent Document 1) and 7-24530 (Patent Document 2).
- Patent Document 1 is a configuration close to the C gap provided in the left and right side frames and having a bending load detector on the inner side surface of the side frame. More specifically, since the bending load detector is provided at a position where the tangent line in the C gap becomes vertical, the side frame is bent vertically so that the C gap in the side frame is opened. It is provided in a portion with a small amount of bending at times. In addition, since it is provided on the inner side surface of the side frame, when the side frame is bent in the left-right direction due to vibration during acceleration / deceleration such as vertical movement of the ram, the left-right direction deflection is also detected. It is difficult to detect only the vertical deflection of the side frame.
- strain gauges as load detecting means are attached to the front surfaces of the side frames at the C gap in the left and right side frames. Since the strain gauge cannot be attached to a curved surface, the load detecting means is attached to a plane perpendicular to the C gap. According to the configuration described in Patent Document 2, although the lateral detection of the side frame hardly affects the detection by the load detection means, the load detection means is attached to the vertical plane in the C gap. For example, when bending in the vertical direction so that the C gap is opened when bending the workpiece, the vertical bending due to the load acting on the side frame is detected with higher accuracy when the vertical deflection is generated. There is a problem to do.
- the present invention has been made in view of the above-described problems, and includes a lower table at the lower part of the left and right side frames, an upper table facing the lower table at the upper part of the side frame, and the upper table or the lower part.
- a press brake having one side of a table that is freely movable up and down as a ram and that has left and right vertical drive means for moving the ram up and down on both side frames, the inner and outer surfaces of the left and right side frames.
- a strain detection sensor for detecting the strain of each side frame is provided on both side surfaces of the side surface.
- FIG. 1 is a front explanatory view conceptually and schematically showing the overall configuration of a press brake according to an embodiment of the present invention.
- FIG. 2 is an explanatory side view of the press brake.
- FIG. 3 is an explanatory view showing a configuration for mounting the strain detection sensor to the side frame.
- FIG. 4 is an explanatory diagram showing the output of the internal and external strain detection sensors as they are.
- FIG. 5 is an explanatory diagram when the outputs of both the internal and external strain detection sensors are averaged.
- the press brake 1 includes left and right side frames 5L and 5R in which a C gap 3 is formed.
- An upper table 7 is provided above the side frames 5L and 5R, and a lower table 9 is provided below the upper table 7 so as to face the upper table 7.
- the upper table 7 is provided as a ram so as to be movable up and down.
- upper parts of the left and right side frames 5L and 5R are, for example, hydraulic cylinders, servo motors, Left and right vertical drive means 11L, 11R comprising a ball screw mechanism or the like are provided.
- vertical position detection means 13L and 13R such as linear sensors are provided on the left and right sides. Since the press brake having the above configuration is a well-known configuration, a more detailed description of the overall configuration of the press brake 1 is omitted.
- strain detection sensors 15A, 15B, 15C, and 15D are provided on the outer and inner surfaces of the left and right side frames 5L and 5R, respectively.
- the strain detection sensor 15A attached to the outer surface of the left side frame 5L and the strain detection sensor 15B attached to the inner surface make a pair.
- the strain detection sensors 15C and 15D attached to the right side frame 5R are also paired in the same manner.
- the strain detection sensors 15A, 15B and 15C, 15D respectively provided on the outer and inner surfaces of the left and right side frames 5L, 5R are provided at symmetrical positions with the left and right side frames 5L, 5R in between.
- the outer and inner strain detection sensors 15A, 15B and 15C, 15D are in a positional relationship facing each other.
- the strain detection sensors 15A, 15B, 15C, and 15D are provided at locations where distortion is likely to occur in the side frames 5L and 5R when a workpiece is pressed by upper and lower molds.
- the tangent L that is in horizontal contact with the lowermost portion of the C gap 3 provided in the side frames 5L and 5R crosses the tangent L, and the rear side (right side in FIG. 2). It is installed with an inclination so that the height is higher.
- the lower portion 17L below the tangent L forms a base portion with less distortion
- the rising portion 17S standing above the tangent L is formed by upper and lower molds.
- the strain detection sensors 15A, 15B, 15C, and 15D are in the vicinity of a position where the rate of change in which the direction of the tangent to the C gap 3 changes from a horizontal direction to a vertical direction and stress is concentrated during pressurization.
- the side frames 5L and 5R are likely to be distorted. Therefore, the amount of deflection (distortion amount) in the left and right side frames 5L and 5R can be detected with high accuracy.
- the location where the strain gauges are attached in the strain detection sensors 15A to 15D is a location where strain is to be detected and needs to be a flat portion.
- flatness with a certain degree of accuracy is required even for a flat portion.
- it is also possible to form accurate measurement planes on the inner and outer surfaces of the side frames 5L and 5R by cutting or grinding. is there.
- the following configuration is adopted in this embodiment.
- the strain detection sensors 15A to 15D include a strain measurement plate 21 that can be integrally attached to the side frames 5L and 5R with a plurality of appropriate attachments 19 such as attachment screws.
- the strain measurement plate 21 is a metal plate made of the same material as the side frames 5L and 5R, and the measurement plane 21F is formed on a highly accurate plane suitable for pressing the strain gauge 23 with a predetermined pressing force set in advance. is there.
- the strain gauge 23 is sandwiched between the measurement plane of the strain measurement plate 21 and the support block 25.
- the support block 25 is in a state in which movement in the direction perpendicular to the paper surface and in the vertical direction in FIG. 3 is restricted in the recess formed in the pressing member 27 and is pressed by the pressing member 27 with a predetermined pressing force. It has been.
- the pressing member 27 is an urging force of an elastic member 31 such as a coil spring that passes through the pressing member 27 and is screwed between the pressing member 27 and a tightening bolt 29 screwed to the strain measuring plate 21. It is pressed by a predetermined pressing force resulting from. Accordingly, the strain gauge 23 is pressed against the measurement plane 21F of the strain measurement plate 21 by a predetermined pressing force set in advance by the urging force of the elastic member 31.
- the strain measurement plate 21 in a state in which the strain gauge 23 is pressed against the measurement plane 21F. are attached to the inner and outer surfaces of the side frames 5L and 5R by the fixture 19, so that the strain gauge 23 is pressed against the measurement surface 21F of the strain measurement plate 21 with a predetermined pressing force on the side frames 5L and 5R.
- Strain detection sensors 15A to 15D can be attached. That is, the strain detection sensors 15A to 15D can be easily attached to the inner and outer surfaces of the left and right side frames 5L and 5R under the same conditions.
- a control device 33 such as a CNC is provided.
- the control device 33 is provided with calculation means 35A that calculates the average value by adding the detection values A and B of the strain detection sensors 15A and 15B, that is, calculates (A + B) / 2. Further, a calculation means 35B for calculating an average value of the detection values C and D of the strain detection sensors 15C and 15D is provided.
- the control device 33 is provided with set value memories 37A and 37B in which the outputs of the vertical drive means 11L and 11R are preset. Further, the control device 33 includes comparison means 39A and 39B for comparing the calculation results of the calculation means 35A and 35B with the set values of the set value memories 37A and 37B.
- the comparison means 39A, 39B compares the calculation results of the calculation means 35A, 35B with the set values stored in the set value memories 37A, 37B, and outputs the outputs of the vertical drive means 11L, 11R to the set value memory. It has a function of controlling it to be equal to the set value stored in 37A and 37B.
- the side frames 5L, 5R bend in the vertical direction by the reaction force ( Distortion).
- the distortion amounts of the side frames 5L and 5R are detected by the strain detection sensors 15A, 15B, 15C, and 15D. Based on the detected amount of distortion, the pressure applied by the vertical drive means 11L, 11R can be calculated, and the output of the vertical drive means 11L, 11R can be controlled to a desired output.
- the left and right side frames 5L and 5R vibrate in the left and right direction in FIG. Sometimes.
- the outer side surface of the side frame 5L contracts and the inner side surface extends.
- the outer surface is extended and the inner surface is contracted.
- the lateral deflection amounts of the outer and inner surfaces of the side frames 5L and 5R are detected by the strain detection sensors 15A, 15B, 15C, and 15D.
- the strain detection sensors 15A to 15D are provided on both the inner and outer sides of the left and right side frames 5L and 5R, and thus the left and right side frames 5L and 5R are caused to bend in the left and right direction.
- the shrinkage and extension can be detected at the same time, and the average value of the inner and outer strain detection sensors 15A and 15B can be calculated, and the vertical direction acting on the left and right side frames 5L and 5R.
- the amount of distortion (the amount of deflection) can be accurately detected. That is, it is possible to accurately detect the amount of vertical deflection of the side frames 5L, 5R caused by the pressure applied by the vertical drive means 11L, 11R.
- the present invention is not limited to the embodiment as described above, and can be implemented in other forms by making appropriate changes.
- the position where the strain detection sensors 15A to 15D are provided is not limited to the lower position of the C gap 3, but as shown by the imaginary line in FIG. It is also possible to provide near the position where the tangent changes from the horizontal direction to the vertical direction.
- the shape of the C gap 3 is not limited to the shape shown in FIG. 2, and various shapes can be employed.
- the strain detection sensors are provided on both the inner side surface and the outer side surface of the left and right side frames in the press brake, when the side frame is bent in the left and right direction, One strain detection sensor detects the extension of the side frame, and the other strain detection sensor detects the shrinkage. Therefore, the horizontal deflection of the side frame can be detected by detecting the pair of strain detection sensors, and the vertical deflection can be detected.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Control Of Presses (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
Description
本国際特許出願は米国指定に関し、2014年2月25日に出願された日本国特許出願第2014-033970号について米国特許法第119条(a)に基づく優先権の利益を援用し、当該開示内容を引用する。
Claims (4)
- 左右のサイドフレームの下部に下部テーブルを備え、上記サイドフレームの上部に前記下部テーブルに対向した上部テーブルを備え、前記上部テーブル又は下部テーブルの一方をラムとして上下動自在に備えると共に、上記ラムを上下動するための左右の上下駆動手段を前記両サイドフレームに備えたプレスブレーキであって、
前記左右のサイドフレームにおける内側面及び外側面の両側面に、各サイドフレームの歪を検出するための歪検出センサを備えることを特徴とするプレスブレーキ。 - 前記歪検出センサは、左右のサイドフレームのCギャップにおいて当該Cギャップに対する接線の方向が水平方向から垂直方向に変化する位置付近であって、かつ内側及び外側は互に対向関係にある位置に備えることを特徴とする請求項1記載のプレスブレーキ。
- 前記歪検出センサは、前記サイドフレームに一体的に取付可能な歪測定プレートの歪測定面に歪ゲージを予め設定された所定の押付け力で押し付けてあることを特徴とする請求項1または2記載のプレスブレーキ。
- 左右の前記上下駆動手段の制御を行う制御装置に、左右のサイドフレームにおける内外の歪検出センサの検出値の平均値を演算する演算手段を備えることを特徴とする請求項1~3のいずれか1項記載のプレスブレーキ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/119,557 US10549331B2 (en) | 2014-02-25 | 2015-02-12 | Press brake |
CN201580010201.2A CN106061638B (zh) | 2014-02-25 | 2015-02-12 | 弯扳机 |
EP15754509.6A EP3112040B1 (en) | 2014-02-25 | 2015-02-12 | Press brake |
KR1020167022207A KR101802429B1 (ko) | 2014-02-25 | 2015-02-12 | 프레스 브레이크 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014-033970 | 2014-02-25 | ||
JP2014033970A JP6243752B2 (ja) | 2014-02-25 | 2014-02-25 | プレスブレーキ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015129459A1 true WO2015129459A1 (ja) | 2015-09-03 |
Family
ID=54008782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2015/053732 WO2015129459A1 (ja) | 2014-02-25 | 2015-02-12 | プレスブレーキ |
Country Status (7)
Country | Link |
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US (1) | US10549331B2 (ja) |
EP (1) | EP3112040B1 (ja) |
JP (1) | JP6243752B2 (ja) |
KR (1) | KR101802429B1 (ja) |
CN (1) | CN106061638B (ja) |
TW (1) | TWI635949B (ja) |
WO (1) | WO2015129459A1 (ja) |
Families Citing this family (3)
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JP6638022B2 (ja) * | 2018-05-28 | 2020-01-29 | 株式会社アマダホールディングス | プレスブレーキ制御装置、プレスブレーキ制御方法、及び金型 |
CN108906927A (zh) * | 2018-07-26 | 2018-11-30 | 天津鹏宇兴业五金制品有限公司 | 一种钣金快速弯折装置 |
EP4140611A1 (de) * | 2021-08-23 | 2023-03-01 | Bystronic Laser AG | Biegemaschine, insbesondere abkantpresse, mit einem wegemesssystem |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0557353A (ja) * | 1991-09-03 | 1993-03-09 | Komatsu Ltd | 板材の曲げ加工方法 |
JPH0724530A (ja) * | 1993-07-12 | 1995-01-27 | Komatsu Ltd | プレスブレーキのラム制御装置 |
WO2007080983A1 (ja) * | 2006-01-13 | 2007-07-19 | Nippon Steel Corporation | ひずみ量測定手段を有したプレス成形装置及びプレス成形方法 |
JP2010149178A (ja) * | 2008-11-21 | 2010-07-08 | Murata Machinery Ltd | プレス機械 |
JP2013202623A (ja) * | 2012-03-27 | 2013-10-07 | Amada Co Ltd | プレスブレーキ |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5890400A (ja) * | 1981-11-24 | 1983-05-30 | Seiko Epson Corp | プレス状態監視装置 |
CH680773A5 (ja) * | 1989-09-11 | 1992-11-13 | Beyeler Machines Sa | |
JP2566345B2 (ja) * | 1991-05-27 | 1996-12-25 | 洋太郎 畑村 | 加工機械 |
JPH05337554A (ja) * | 1992-06-03 | 1993-12-21 | Komatsu Ltd | プレスブレーキの中開き補正装置 |
JP2566345Y2 (ja) | 1992-09-21 | 1998-03-25 | 株式会社アイチコーポレーション | 高所作業車用サブブーム |
US5450756A (en) * | 1992-11-06 | 1995-09-19 | Toyota Jidosha Kabushiki Kaisha | Device and method for measuring and adjusting pressing load values on a press |
JP2823493B2 (ja) * | 1993-01-18 | 1998-11-11 | トーヨーエイテック株式会社 | スライシング装置のブレード撓み検出方法及び装置並びにブレード撓み制御装置 |
IT1295498B1 (it) * | 1997-10-17 | 1999-05-12 | Luciano Gasparini | Dispositivo per rilevare la flessione delle traverse, inferiore e superiore, finalizzato all'interazione con almeno un sistema di |
JP4293659B2 (ja) * | 1998-11-30 | 2009-07-08 | 株式会社小松製作所 | 直動型プレスの打抜き方法および直動型プレス |
JP2000246342A (ja) | 1999-03-03 | 2000-09-12 | Amada Eng Center Co Ltd | 曲げ加工機およびこの曲げ加工機を用いた曲げ加工方法 |
US7079919B2 (en) * | 2001-03-16 | 2006-07-18 | Bystronic Laser Ag | Method for setting the travel of a press brake |
AT501264B8 (de) * | 2004-09-10 | 2007-02-15 | Trumpf Maschinen Austria Gmbh | Verfahren zur herstellung eines werkteils durch biegeumformung |
AT504640B1 (de) * | 2007-06-20 | 2008-07-15 | Trumpf Maschinen Austria Gmbh | Biegemaschine |
CN102176988B (zh) * | 2008-10-07 | 2013-05-15 | 新日铁住金株式会社 | 金属冲压成形品的裂缝判定方法、装置、程序以及记录介质 |
JP2012006057A (ja) * | 2010-06-28 | 2012-01-12 | Kurimoto Ltd | クランクプレス |
JP5579877B2 (ja) * | 2011-02-09 | 2014-08-27 | 株式会社アマダ | 曲げ加工機 |
KR101317993B1 (ko) * | 2013-04-08 | 2013-10-14 | 내외 코리아 주식회사 | 스트레인게이지를 이용한 차량 중량 측정장치 |
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2014
- 2014-02-25 JP JP2014033970A patent/JP6243752B2/ja active Active
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2015
- 2015-02-12 US US15/119,557 patent/US10549331B2/en active Active
- 2015-02-12 KR KR1020167022207A patent/KR101802429B1/ko active IP Right Grant
- 2015-02-12 CN CN201580010201.2A patent/CN106061638B/zh active Active
- 2015-02-12 EP EP15754509.6A patent/EP3112040B1/en active Active
- 2015-02-12 WO PCT/JP2015/053732 patent/WO2015129459A1/ja active Application Filing
- 2015-02-13 TW TW104105032A patent/TWI635949B/zh active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0557353A (ja) * | 1991-09-03 | 1993-03-09 | Komatsu Ltd | 板材の曲げ加工方法 |
JPH0724530A (ja) * | 1993-07-12 | 1995-01-27 | Komatsu Ltd | プレスブレーキのラム制御装置 |
WO2007080983A1 (ja) * | 2006-01-13 | 2007-07-19 | Nippon Steel Corporation | ひずみ量測定手段を有したプレス成形装置及びプレス成形方法 |
JP2010149178A (ja) * | 2008-11-21 | 2010-07-08 | Murata Machinery Ltd | プレス機械 |
JP2013202623A (ja) * | 2012-03-27 | 2013-10-07 | Amada Co Ltd | プレスブレーキ |
Also Published As
Publication number | Publication date |
---|---|
KR101802429B1 (ko) | 2017-11-28 |
EP3112040B1 (en) | 2018-12-12 |
KR20160108508A (ko) | 2016-09-19 |
US20170066025A1 (en) | 2017-03-09 |
CN106061638A (zh) | 2016-10-26 |
EP3112040A4 (en) | 2017-11-29 |
TW201540488A (zh) | 2015-11-01 |
US10549331B2 (en) | 2020-02-04 |
EP3112040A1 (en) | 2017-01-04 |
CN106061638B (zh) | 2018-09-18 |
JP6243752B2 (ja) | 2017-12-06 |
JP2015157306A (ja) | 2015-09-03 |
TWI635949B (zh) | 2018-09-21 |
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