WO2014097684A1 - 鋼板の板取りシステム及び方法 - Google Patents
鋼板の板取りシステム及び方法 Download PDFInfo
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- WO2014097684A1 WO2014097684A1 PCT/JP2013/073790 JP2013073790W WO2014097684A1 WO 2014097684 A1 WO2014097684 A1 WO 2014097684A1 JP 2013073790 W JP2013073790 W JP 2013073790W WO 2014097684 A1 WO2014097684 A1 WO 2014097684A1
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- WIPO (PCT)
- Prior art keywords
- steel plate
- cutting
- line
- cutting line
- rail
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
- B21C51/005—Marking devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
Definitions
- the present invention relates to a steel plate system and method suitable for use in steel plate production from a steel plate after rolling.
- This application claims priority based on Japanese Patent Application No. 2012-276008 filed in Japan on December 18, 2012, the contents of which are incorporated herein by reference.
- Patent Documents 1 to 3 disclose a cutting machine including a pair of rails and a portal frame that travels on the pair of rails. Disconnect.
- a large cutting machine is required, so that capital investment is expensive.
- the cutting machine cannot be carried, there is a problem that a space for plate cutting is limited.
- Patent Document 2 discloses a method for recognizing a cuttable range of a steel plate using a detector composed of a laser projector and a light receiver and cutting the steel plate. Has been. However, since the detector moves along the entire circumference of the steel plate and recognizes the cuttable range of the steel plate, the steel plate is cut, so that it takes time to cut the steel plate.
- Patent Document 3 discloses a method of cutting a steel sheet by irradiating a laser on a planned cutting line, forming a groove on the surface of the steel sheet, marking a planned cutting line, and irradiating the groove with a laser again. Yes.
- the step of marking the planned cutting line and the step of cutting the steel plate are separate steps, it takes time to cut the steel plate.
- Patent Document 4 discloses a shearing equipment for thick steel plates provided with a surface hardening device, a marking device, a marking position detection device, a conveying device, and a shearing machine. Has been. However, since the marking device and the shearing machine are separate stages, a large space is required, and a conveying device between the marking process and the shearing process is also required, so costs such as equipment costs are incurred. End up.
- This invention is made
- a first aspect according to the present invention includes a laser irradiation device that draws a cutting line representing the shape of a product steel plate by irradiating the surface of the steel plate with laser light; a laser light detector that detects the laser light; A cutting device for cutting a steel plate, and a moving cutting device having a main body that travels on the steel plate, and the moving cutting device detects the cutting line with the laser light detector, whereby the cutting line It is a plate-cutting system of a steel plate that performs cutting so as to follow.
- the laser irradiation apparatus may draw a reference line representing the mounting position of the rail in addition to the cutting line.
- at least one of the cutting line and the reference line may be different from each other among color, line width, and line type.
- an imaging device that images the surface of the steel sheet; a management device connected to the imaging device and the laser irradiation device; May be further provided.
- the management device recognizes a contour of the steel plate based on the captured image and determines whether or not the product steel plate can be chamfered. You may prepare.
- the management device determines whether or not the cutting line exists within a position adjustment range of the cutting device based on the captured image.
- a disconnectability determination unit may be provided.
- the management device is configured such that the cutting line is continuously present on the surface of the steel sheet based on the captured image. You may provide the cutting line determination part which determines whether to do.
- the management device has a predetermined difference between the cutting line and the position of the cutting device based on the captured image. A cutting correctness determination unit that determines whether the tolerance is within the tolerance dimension may be provided.
- the management device includes a dimension measuring unit that measures a dimension of the product steel plate based on the captured image. Also good.
- a second aspect according to the present invention includes a step of drawing a cutting line representing the shape of a product steel plate by irradiating the surface of the steel plate with laser light; and by detecting the cutting line, the cutting position is the cutting
- a method of cutting a steel sheet comprising: adjusting the cutting position so as to match a line; and performing cutting so as to follow the cutting line by the adjustment.
- the cutting position is adjusted in a direction in a steel plate surface and a direction intersecting with an extending direction of a rail placed on the steel plate. Also good.
- a reference line representing a position where the rail is placed may be drawn.
- the cutting line and the reference line may be different from each other in at least one of color, line width, and line type.
- the cutting is stopped when the cutting line is not detected during the cutting of the steel sheet. May be.
- the You may further provide the process of recognizing the outline of a steel plate and determining whether the said product steel plate can be cut off.
- the surface of the steel plate is imaged in a state where the rail is placed on the steel plate, and the captured image is displayed.
- the method may further include a step of determining whether or not the rail is placed so that the cutting line exists within the adjustment range of the cutting position.
- the method may further include a step of imaging the surface and determining whether the cutting line is continuously present on the surface of the steel plate based on the captured image. (19) In the aspect according to any one of (11) to (18) above, while the steel plate is being cut, the surface of the steel plate is imaged, and based on the captured image, the cutting line and You may further provide the process of determining whether the difference with the said cutting position exists in a predetermined tolerance dimension.
- the method may further include a step of drawing at least one of a character and an image by irradiating the surface of the steel plate with the laser light. .
- the method may further include a step of capturing the steel sheet and recognizing the character or the image based on the captured image.
- the cutting line for cutting off a product steel plate is drawn on the surface of the steel plate after completion
- FIG. 1 is a schematic configuration diagram of a plate removing system according to a first embodiment of the present invention. It is a perspective view of the plate removal system which shows the state which implements gas cutting. It is a side view of the plate removal system which shows a state with a hose on a cutting line. It is a figure which shows the structural example of the management apparatus which manages the boarding of a steel plate. It is a figure which shows the state which drawn the product number with the laser irradiation apparatus on the surface of a product steel plate, and the operator is handwriting so that it may trace it. It is a figure which shows the state which has drawn the cutting line and the rail reference line with the laser irradiation apparatus on the surface of the steel plate after completion
- FIG. 1 is a schematic configuration diagram of a plate cutting system according to the first embodiment.
- the plate removing system according to the first embodiment is a product from a steel plate 1 with ears after rolling (hereinafter simply referred to as “steel plate 1”) placed on a work table (not shown).
- the steel plate 1a is scraped, and includes an imaging device 100, a laser irradiation device 200, a rail 300, a gas cutting device 400 (moving cutting device), and a management device 500.
- the rail 300 and the gas cutting device 400 are not shown.
- the rail 300 and the gas cutting device 400 will be described later with reference to FIG.
- An imaging device 100 that images the steel plate 1 is disposed above the work table.
- the image capturing apparatus 100 can capture an image of the steel plate 1 and recognize the outline 1b of the steel plate 1.
- a line scan camera capable of scanning the surface of the steel plate 1 is used, but an area camera or a 3D camera may be used.
- a laser irradiation apparatus 200 is disposed above the work table to draw a cutting line 2 on the surface of the steel plate 1 for cutting the product steel plate 1a from the steel plate 1.
- the laser irradiation apparatus 200 irradiates the surface of the steel plate 1 with the laser beam 201, and draws the cutting line 2 showing the shape of the product steel plate 1a inside the outline 1b of the steel plate 1. That is, the cutting line 2 is drawn by irradiating the laser beam 201 instead of the ruled line conventionally drawn manually.
- Patent Documents 3 and 4 differ from the present invention because the surface of the steel sheet is processed or altered by performing laser irradiation.
- the cutting of the product steel plate 1a is completed by gas cutting the steel plate 1 along the cutting line 2 drawn on the steel plate 1 by the laser irradiation apparatus 200.
- the gas cutting in the first embodiment will be described in detail below.
- FIG. 2 is a perspective view of the plate removing system showing a state in which gas cutting is performed.
- a rail 300 is placed on the steel plate 1, and the gas cutting device 400 is caused to travel along the rail 300.
- a laser irradiation device 200 that draws a cutting line 2 representing the shape of the product steel plate 1a is arranged above the gas cutting device 400.
- the gas cutting device 400 includes an arm 401, a gas cutting torch 402 (cutting device), a laser light detector 403, and a main body 405, and performs gas cutting along the cutting line 2.
- the gas cutting device 400 is connected to a hose for supplying gas, which is omitted in FIG.
- the gas cutting device 400 includes an arm 401 extending in a horizontal direction (arrow Y direction in FIG. 2) orthogonal to the traveling direction (arrow X direction in FIG. 2).
- the arm 401 is provided with a gas cutting torch 402, and the gas cutting torch 402 can move along the direction Y in which the arm 401 extends.
- the gas cutting torch 402 extends downward (from the steel plate 1 side) from the arm 401.
- a crater that opens toward the steel plate 1 is provided at the tip (lower end) of the gas cutting torch 402.
- a laser light detector 403 for detecting a cutting line 2 (laser light 201 irradiated on the steel plate 1) is disposed near the lower end of the gas cutting torch 402.
- the laser light detector 403 for example, a CCD camera or a laser sensor can be used.
- the gas cutting device 400 When performing gas cutting, the gas cutting device 400 is made to travel along the rail 300 by operating a control device (not shown) that controls the traveling of the gas cutting device 400. At this time, the gas cutting torch 402 is moved along the extending direction Y of the arm 401 so that the laser light detector 403 detects the cutting line 2. As described above, the position of the gas cutting torch 402 in the Y direction can be automatically adjusted so that the position of the gas cutting torch 402 (the position of the crater) matches the cutting line 2. That is, the gas cutting can be performed such that the gas cutting torch 402 follows the cutting line 2 while the gas cutting device 400 travels along the direction X of the rail 300.
- the control device may be included in the gas cutting device 400, or may be disposed separately from the gas cutting device 400.
- the gas cutting torch 402 includes the laser light detector 403, and the gas cutting is performed along the cutting line 2 by moving along the extending direction of the arm 401. For this reason, when placing the rail 300 on the steel plate 1, the positional relationship between the cutting line 2 and the rail 300 is not required to be as strict as in the prior art. That is, after temporarily placing the rail 300 on the steel plate 1, it is unnecessary to run the gas cutting device 400 once and confirm that the gas cutting torch 402 passes over the cutting line 2.
- FIG. 2 shows a state in which gas cutting is performed along one cutting line 2 in the longitudinal direction of the steel plate 1 (X direction in FIG. 2), but gas cutting is performed along another cutting line 2. In this case, the same operation is repeated after the rail 300 is properly placed.
- the arm 401 is supported by the rotation shaft 404, and the rotation of the rotation shaft 404 (the direction of the arrow r in FIG. 2) changes the direction of the arm 401 by 180 °. Can do. That is, although depending on the plate width of the steel plate 1, after performing gas cutting along one cutting line 2 in the longitudinal direction of the steel plate 1, the rail 300 is remounted by changing the direction of the arm 401. Without this, it is possible to continue the gas cutting along the other cutting line 2.
- the structure of the gas cutting device 400 shown in FIG. 2 is an example, and is not limited only to this.
- the configuration is not limited to using the arm 401 as shown in FIG. Any movable configuration may be used.
- the gas cutting device 400 provided with the laser light detector 403 and the laser irradiation device 200 that draws the cutting line 2 are arranged independently of each other. For this reason, it is possible to simultaneously perform an operation of drawing a cutting line and a gas cutting operation. Furthermore, the influence which the position with respect to the steel plate 1 of the rail 300 has on the dimensional accuracy of the product steel plate 1a after cutting can be reduced.
- the gas cutting device 400 is connected with a hose 600 that supplies gas.
- a hose 600 that supplies gas.
- FIG. 3 when the hose 600 exists on the cutting line 2, there is a risk that the hose 600 may be cut by mistake.
- the operation of the gas cutting device 400 in this case will be described with reference to FIG.
- FIG. 3 is a side view of the plate cutting system showing a state in which the hose 600 is on the cutting line 2.
- the laser irradiation apparatus 200 is disposed above the steel plate 1 and irradiates a laser beam 201 to draw a cutting line 2 on the surface of the steel plate 1.
- the gas cutting device 400 includes a laser light detector 403, and detects the cutting line 2 ahead of the traveling direction (X direction in FIG. 3). When cutting the steel plate 1, the gas cutting device 400 travels along the rail 300.
- the cutting line 2 is detected. Can not do it. In this case, gas cutting is stopped. Therefore, it is possible to reliably prevent the hose 600 from being accidentally cut.
- the management device 500 is connected to the imaging device 100 and the laser irradiation device 200.
- the management device 500 is realized by a computer device including, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like.
- the laser irradiation control unit 501 controls the laser irradiation by the laser irradiation apparatus 200 and, for example, based on the dimensions (length and width) of the product steel plate 1 a transmitted in advance from the host computer. A cutting line 2 is drawn on the steel plate 1.
- characters and images may be drawn on the product steel plate 1a before or after cutting using the laser irradiation apparatus 200 as shown in FIG.
- the laser irradiation apparatus for drawing a character and an image on the product steel plate 1a may be another laser irradiation apparatus different from the laser irradiation apparatus 200.
- the image acquisition unit 502 acquires an image captured by the imaging device 100.
- the imaging device 100 not only images the steel plate 1 as described above, but can also image the steel plate 1 on which the rail 300 is placed and the product steel plate 1a after cutting.
- one imaging device 100 may image the steel plate 1 before cutting and the product steel plate 1a after cutting, or a plurality of imaging devices 100 are arranged, and each imaging device 100 includes the steel plate 1 and the product steel plate 1a. You may make it image, respectively.
- the imaging device 100 can also image the steel plate 1 being cut. Also in this case, as described above, the image acquisition unit 502 acquires a captured image.
- the contour recognizing unit 503 recognizes the contour 1b (see FIG. 1) of the steel plate 1 based on the image of the steel plate 1 before cutting taken by the imaging device 100. In this case, for example, the contour recognition unit 503 detects the edge of the steel plate 1 based on the luminance change on the captured image, and recognizes the contour 1b of the steel plate 1.
- the imaging device 100 captures the steel plate 1, and the contour recognition unit 503 recognizes the contour 1b of the steel plate 1, for example, from a host computer (not shown). It is possible to confirm whether or not the product steel plate 1a having the previously communicated dimensions can be taken.
- the cutting possibility determination unit 504 has a cutting line 2 in the movable range of the gas cutting torch 402 based on the image of the steel plate 1 imaged by the imaging device 100 with the rail 300 placed on the steel plate 1. Whether or not the rail 300 is placed is determined.
- the cutting torch 402 can move along the arm 401, when placing the rail 300, it is stated that the positional relationship between the cutting line 2 and the rail 300 does not require strictness. It is necessary that the cutting line 2 exists in the movable range of the working torch 402.
- the cutting possibility determination unit 504 places the rail 300 so that the cutting line 2 exists within the movable range of the gas cutting torch 402. It is determined whether or not it has been done. Since it is necessary to automatically recognize the rail 300 on the captured image, it is preferable to mark the rail 300 or the like.
- the cutting line determination unit 505 has the cutting line 2 continuously present on the surface of the steel plate 1 based on the image of the steel plate 1 captured by the imaging device 100 in a state where the cutting line 2 is drawn on the surface of the steel plate 1. It is determined whether or not to do.
- the cutting line 2 is cut off by the region 601 where the cutting line 2 does not exist. That is, the cutting line 2 becomes discontinuous on the surface of the steel plate 1. Therefore, when the cutting line 2 is drawn on the surface of the steel plate 1, the imaging device 100 disposed on the steel plate 1 images the steel plate 1, and the cutting line determination unit 505 determines that the cutting line 2 is discontinuous. When it is determined, the cutting is stopped. Therefore, it is possible to reliably prevent the hose 600 from being accidentally cut.
- the cutting correctness determination unit 506 recognizes the difference between the cutting line 2 and the cutting position (the position of the gas cutting torch 402) based on the image of the steel plate 1 imaged by the imaging device 100 during the cutting of the steel plate. It is determined whether the difference is within a predetermined tolerance dimension.
- the cutting correctness determination unit 506 determines that the difference between the cutting line 2 and the cutting position is outside the predetermined tolerance dimension during the cutting of the steel sheet, the cutting is stopped. Therefore, the cutting correctness determination unit 506 can determine whether or not cutting has been performed along the cutting line 2, and can prevent a decrease in yield.
- the dimension measuring unit 507 measures the dimensions of the product steel plate 1a based on the image of the cut product steel plate 1a imaged by the imaging device 100. The measured dimensions of the product steel plate 1a are transmitted to the host computer and stored. In addition, the dimension measuring unit 507 determines whether or not the measured dimension of the product steel plate 1a is within a dimension tolerance (within an allowable dimension range) transmitted in advance from a host computer, for example. And when the dimension of the measured product steel plate 1a is out of the tolerance, the operator may be notified of this.
- a dimension tolerance within an allowable dimension range
- the character / image recognition unit 508 recognizes a character or an image handwritten on the product steel plate 1a based on the image of the product steel plate 1a before or after cutting taken by the imaging device 100. For example, as shown in FIG. 5, the product number handwritten on the cut product steel plate 1a may be recognized, and it may be determined whether or not the product number matches the planned product number. In addition, when a character and an image are handwritten on the product steel plate 1a before cutting, the above determination may be performed based on the image of the product steel plate 1a before cutting instead of the product steel plate 1a after cutting.
- a predetermined character or image for example, a predetermined check mark is handwritten on the product steel plate 1a, it may be recognized that the product number has been handwritten.
- the laser irradiation apparatus 200 draws the cutting line 2 on the surface of the steel plate 1, but as shown in FIG. 6, a rail reference line 310 representing the position where the rail 300 is placed is placed on the steel plate 1. You may draw more. In this case, by placing the rail 300 on the steel plate 1 along the rail reference line 310, the deviation in the Y direction (see FIG. 2) between the rail 300 and the cutting line 2 can be reduced. Therefore, the situation where the cutting line 2 does not exist in the movable range of the gas cutting torch 402 can be reliably prevented.
- the cutting line 2 and the rail reference line 310 may have different colors.
- the cutting line 2 may be red and the rail reference line 310 may be blue. In this case, an operation error such as mounting the rail 300 along the cutting line 2 can be prevented.
- the cutting line 2 and the rail reference line 310 may have different line widths.
- the line width of the cutting line 2 may be smaller than the line width of the rail reference line 310. In this case, an operation error such as mounting the rail 300 along the cutting line 2 can be prevented.
- the line width means the thickness of the line.
- the cutting line 2 and the rail reference line 310 may be different line types.
- the cutting line 2 may be a solid line
- the rail reference line 310 may be a one-dot chain line.
- an operation error such as mounting the rail 300 along the cutting line 2 can be prevented.
- the line type means a line type such as a solid line, a one-dot chain line, or a two-dot chain line.
- the gas cutting device 400 travels along the rail 300 and performs gas cutting.
- the rail 300 is not provided, and the gas cutting device 700 self-travels on the steel plate 1 along the cutting line 2 to perform gas cutting along the cutting line 2. .
- FIG. 7 is a plan view of the planing system in the second embodiment.
- the gas cutting device 700 includes a main body 702, a gas cutting torch 402, and a laser light detector 403.
- the main body 702 includes wheels 701.
- the wheel 701 causes the gas cutting device 700 to travel by rotating around its central axis CL. Moreover, the traveling direction of the gas cutting device 700 can be changed by changing the direction of the wheel 701.
- the gas cutting device 700 When carrying out gas cutting, the gas cutting device 700 is run. At this time, the gas cutting device 700 performs gas cutting while changing the traveling direction so that the laser beam detector 403 detects the cutting line 2. That is, also in the second embodiment, similarly to the first embodiment, the gas cutting device 700 can perform the gas cutting so as to follow the cutting line 2.
- the work of placing the rail 300 can be omitted, so that the plate cutting work can be further speeded up and rationalized as compared with the first embodiment.
- Cutting line 100 Imaging device 200: Laser irradiation device 201: Laser beam 300: Rail 310: Rail reference line 400: Gas cutting device 401: Arm 402: Gas cutting torch 403: Laser light detector 404: Rotating shaft 405: Main body unit 500: Management device 501: Laser irradiation control unit 502: Image acquisition unit 503: Outline recognition unit 504: Cutting possibility determination unit 505: Cutting Line determination unit 506: Cutting correctness determination unit 507: Dimension measurement unit 508: Character / image recognition unit
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Abstract
Description
本願は、2012年12月18日に、日本に出願された特願2012-276008号に基づき優先権を主張し、その内容をここに援用する。
(1)本発明に係る第1の態様は、鋼板の表面にレーザ光を照射して製品鋼板の形状を表す切断線を描くレーザ照射装置と;前記レーザ光を検出するレーザ光検出器、前記鋼板を切断する切断器、および前記鋼板上を走行する本体部を有する移動切断装置と;を備え、前記移動切断装置が、前記レーザ光検出器で前記切断線を検出することにより、前記切断線に追従するように切断を実施する鋼板の板取りシステムである。
(2)上記(1)の態様において、以下のように構成しても良い:前記鋼板上に載置されるレールをさらに備え、前記移動切断装置が、鋼板面内でかつ前記本体部の走行方向と交差する方向に前記切断器の位置を調整する位置調整機構を備え、前記レールに沿って前記鋼板上を走行する。
(3)上記(2)の態様において、前記レーザ照射装置は、前記切断線に加えて、前記レールの載置位置を表す基準線を描いてもよい。
(4)上記(3)の態様において、前記切断線と前記基準線は、色、線幅、および線種のうち少なくとも一つが互いに異なっていてもよい。
(5)上記(2)から(4)のいずれか一項に記載の態様において、前記鋼板の前記表面を撮像する撮像装置と;前記撮像装置および前記レーザ照射装置に接続される管理装置と;をさらに備えてもよい。
(6)上記(5)の態様において、前記管理装置は、前記撮像された画像に基づいて前記鋼板の輪郭を認識し、前記製品鋼板の板取りが可能か否かを判定する輪郭認識部を備えてもよい。
(7)上記(5)または(6)の態様において、前記管理装置は、前記撮像された画像に基づいて、前記切断器の位置調整範囲内に前記切断線が存在するか否かを判定する切断可否判定部を備えてもよい。
(8)上記(5)から(7)のいずれか一項に記載の態様において、前記管理装置は、前記撮像された画像に基づいて、前記切断線が前記鋼板の前記表面に連続して存在するか否かを判定する切断線判定部を備えてもよい。
(9)上記(5)から(8)のいずれか一項に記載の態様において、前記管理装置は、前記撮像された画像に基づいて、前記切断線と前記切断器の位置との差分が所定の公差寸法内であるか否かを判定する切断正否判定部を備えてもよい。
(10)上記(5)から(9)のいずれか一項に記載の態様において、前記管理装置は、前記撮像された画像に基づいて、前記製品鋼板の寸法を測定する寸法測定部を備えてもよい。
(11)本発明に係る第2の態様は、鋼板の表面にレーザ光を照射して製品鋼板の形状を表す切断線を描く工程と;前記切断線を検出することにより、切断位置が前記切断線に一致するように、前記切断位置を調整する工程と;前記調整により、前記切断線に追従するように切断を実施する工程と;を備える鋼板の板取り方法である。
(12)上記(11)の態様において、前記調整する工程では、鋼板面内の方向でかつ前記鋼板上に載置されるレールの延在方向と交差する方向に、前記切断位置を調整してもよい。
(13)上記(12)の態様において、前記切断線を描く工程では、前記切断線に加えて、前記レールが載置される位置を表す基準線を描いてもよい。
(14)上記(13)の態様において、前記切断線と前記基準線は、色、線幅、および線種のうち少なくとも一つが互いに異なっていてもよい。
(15)上記(11)から(14)のいずれか一項に記載の態様において、前記切断を実施する工程では、前記鋼板を切断中に、前記切断線が非検出の場合、前記切断を停止してもよい。
(16)上記(11)から(15)のいずれか一項に記載の態様において、前記切断線を描く工程の前に、前記鋼板の前記表面を撮像するとともに、その撮像画像に基づいて、前記鋼板の輪郭を認識し、前記製品鋼板の板取りが可能か否かを判定する工程をさらに備えてもよい。
(17)上記(12)から(14)のいずれか一項に記載の態様において、前記鋼板上に前記レールが載置された状態で、前記鋼板の前記表面を撮像するとともに、その撮像画像に基づいて、前記切断位置の調整範囲内に前記切断線が存在するように前記レールが載置されているか否かを判定する工程をさらに備えてもよい。
(18)上記(11)から(17)のいずれか一項に記載の態様において、前記切断線を描く工程の後、前記鋼板の前記表面に前記切断線が描かれた状態で、前記鋼板の前記表面を撮像するとともに、その撮像画像に基づいて、前記切断線が前記鋼板の前記表面に連続して存在するか否かを判定する工程をさらに備えてもよい。
(19)上記(11)から(18)のいずれか一項に記載の態様において、前記鋼板の切断中に、前記鋼板の前記表面を撮像するとともに、その撮像画像に基づいて、前記切断線と前記切断位置との差分が所定の公差寸法内にあるか否かを判定する工程をさらに備えてもよい。
(20)上記(11)から(19)のいずれか一項に記載の態様において、前記鋼板の切断後に、前記製品鋼板を撮像するとともに、その撮像画像に基づいて、前記製品鋼板の寸法を測定する工程をさらに備えてもよい。
(21)上記(11)から(20)のいずれか一項に記載の態様において、前記鋼板の前記表面に前記レーザ光を照射して文字および画像の少なくとも一方を描く工程をさらに備えてもよい。
(22)上記(21)の態様において、前記鋼板を撮像するとともに、その撮像画像に基づいて、前記文字又は前記画像を認識する工程をさらに備えてもよい。
(第1実施形態)
まず、本発明の第1実施形態について説明する。図1は、第1実施形態に係る板取りシステムの概略構成図である。図1に示すように、本第1実施形態の板取りシステムは、不図示の作業台に載置された、圧延終了後の耳付き鋼板1(以下、単に「鋼板1」と称する)から製品鋼板1aを板取りするものであり、撮像装置100、レーザ照射装置200、レール300、ガス切断装置400(移動切断装置)および管理装置500から構成されている。なお、図1では、レール300およびガス切断装置400の図示を省略している。レール300およびガス切断装置400については、図2を用いて後述する。
上述したように、第1実施形態では、ガス切断装置400がレール300に沿って走行し、ガス切断を実施する。これに対して、本第2実施形態では、レール300を設けず、ガス切断装置700が切断線2に沿って鋼板1上を自走することにより、切断線2に沿ってガス切断を実施する。
1a:製品鋼板
1b:鋼板の輪郭
2:切断線
100:撮像装置
200:レーザ照射装置
201:レーザ光
300:レール
310:レール基準線
400:ガス切断装置
401:アーム
402:ガス切断用トーチ
403:レーザ光検出器
404:回転軸
405:本体部
500:管理装置
501:レーザ照射制御部
502:画像取得部
503:輪郭認識部
504:切断可否判定部
505:切断線判定部
506:切断正否判定部
507:寸法測定部
508:文字・画像認識部
Claims (22)
- 鋼板の表面にレーザ光を照射して製品鋼板の形状を表す切断線を描くレーザ照射装置と;
前記レーザ光を検出するレーザ光検出器、前記鋼板を切断する切断器、および前記鋼板上を走行する本体部を有する移動切断装置と;
を備え、
前記移動切断装置は、前記レーザ光検出器で前記切断線を検出することにより、前記切断線に追従するように切断を実施することを特徴とする鋼板の板取りシステム。 - 前記鋼板上に載置されるレールをさらに備え、
前記移動切断装置は、鋼板面内でかつ前記本体部の走行方向と交差する方向に前記切断器の位置を調整する位置調整機構を備え、前記レールに沿って前記鋼板上を走行することを特徴とする請求項1に記載の鋼板の板取りシステム。 - 前記レーザ照射装置は、前記切断線に加えて、前記レールの載置位置を表す基準線を描くことを特徴とする請求項2に記載の鋼板の板取りシステム。
- 前記切断線と前記基準線は、色、線幅、および線種のうち少なくとも一つが互いに異なることを特徴とする請求項3に記載の鋼板の板取りシステム。
- 前記鋼板の前記表面を撮像する撮像装置と;
前記撮像装置および前記レーザ照射装置に接続される管理装置と;
をさらに備えることを特徴とする請求項2から4のいずれか一項に記載の鋼板の板取りシステム。 - 前記管理装置は、前記撮像された画像に基づいて前記鋼板の輪郭を認識し、前記製品鋼板の板取りが可能か否かを判定する輪郭認識部を備えることを特徴とする請求項5に記載の鋼板の板取りシステム。
- 前記管理装置は、前記撮像された画像に基づいて、前記切断器の位置調整範囲内に前記切断線が存在するか否かを判定する切断可否判定部を備えることを特徴とする請求項5または6に記載の鋼板の板取りシステム。
- 前記管理装置は、前記撮像された画像に基づいて、前記切断線が前記鋼板の前記表面に連続して存在するか否かを判定する切断線判定部を備えることを特徴とする請求項5から7のいずれか一項に記載の鋼板の板取りシステム。
- 前記管理装置は、前記撮像された画像に基づいて、前記切断線と前記切断器の位置との差分が所定の公差寸法内であるか否かを判定する切断正否判定部を備えることを特徴とする請求項5から8のいずれか一項に記載の鋼板の板取りシステム。
- 前記管理装置は、前記撮像された画像に基づいて、前記製品鋼板の寸法を測定する寸法測定部を備えることを特徴とする請求項5から9のいずれか一項に記載の鋼板の板取りシステム。
- 鋼板の表面にレーザ光を照射して製品鋼板の形状を表す切断線を描く工程と;
前記切断線を検出することにより、切断位置が前記切断線に一致するように、前記切断位置を調整する工程と;
前記調整により、前記切断線に追従するように切断を実施する工程と;
を備えることを特徴とする鋼板の板取り方法。 - 前記調整する工程では、鋼板面内の方向でかつ前記鋼板上に載置されるレールの延在方向と交差する方向に、前記切断位置を調整することを特徴とする請求項11に記載の鋼板の板取り方法。
- 前記切断線を描く工程では、前記切断線に加えて、前記レールが載置される位置を表す基準線を描くことを特徴とする請求項12に記載の鋼板の板取り方法。
- 前記切断線と前記基準線は、色、線幅、および線種のうち少なくとも一つが互いに異なることを特徴とする請求項13に記載の鋼板の板取り方法。
- 前記切断を実施する工程では、前記鋼板を切断中に、前記切断線が非検出の場合、前記切断を停止することを特徴とする請求項11から14のいずれか一項に記載の鋼板の板取り方法。
- 前記切断線を描く工程の前に、前記鋼板の前記表面を撮像するとともに、その撮像画像に基づいて、前記鋼板の輪郭を認識し、前記製品鋼板の板取りが可能か否かを判定する工程をさらに備えることを特徴とする請求項11から15のいずれか一項に記載の鋼板の板取り方法。
- 前記鋼板上に前記レールが載置された状態で、前記鋼板の前記表面を撮像するとともに、その撮像画像に基づいて、前記切断位置の調整範囲内に前記切断線が存在するように前記レールが載置されているか否かを判定する工程をさらに備えることを特徴とする請求項12から14のいずれか一項に記載の鋼板の板取り方法。
- 前記切断線を描く工程の後、前記鋼板の前記表面に前記切断線が描かれた状態で、前記鋼板の前記表面を撮像するとともに、その撮像画像に基づいて、前記切断線が前記鋼板の前記表面に連続して存在するか否かを判定する工程をさらに備えることを特徴とする請求項11から17のいずれか一項に記載の鋼板の板取り方法。
- 前記鋼板の切断中に、前記鋼板の前記表面を撮像するとともに、その撮像画像に基づいて、前記切断線と前記切断位置との差分が所定の公差寸法内にあるか否かを判定する工程をさらに備えることを特徴とする請求項11から18のいずれか一項に記載の鋼板の板取り方法。
- 前記鋼板の切断後に、前記製品鋼板を撮像するとともに、その撮像画像に基づいて、前記製品鋼板の寸法を測定する工程をさらに備えることを特徴とする請求項11から19のいずれか一項に記載の鋼板の板取り方法。
- 前記鋼板の前記表面に前記レーザ光を照射して文字および画像の少なくとも一方を描く工程をさらに備えることを特徴とする請求項11から20のいずれか一項に記載の鋼板の板取り方法。
- 前記鋼板の前記表面を撮像するとともに、その撮像画像に基づいて、前記文字又は前記画像を認識する工程をさらに備えることを特徴とする請求項21に記載の鋼板の板取り方法。
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