JPH0234264B2 - - Google Patents
Info
- Publication number
- JPH0234264B2 JPH0234264B2 JP58193348A JP19334883A JPH0234264B2 JP H0234264 B2 JPH0234264 B2 JP H0234264B2 JP 58193348 A JP58193348 A JP 58193348A JP 19334883 A JP19334883 A JP 19334883A JP H0234264 B2 JPH0234264 B2 JP H0234264B2
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- cart
- length
- rear end
- steel
- 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.)
- Expired - Lifetime
Links
- 238000005520 cutting process Methods 0.000 claims description 71
- 229910000831 Steel Inorganic materials 0.000 claims description 37
- 239000010959 steel Substances 0.000 claims description 37
- 238000001514 detection method Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003708 edge detection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- 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
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/002—Machines, apparatus, or equipment for cutting plane workpieces, e.g. plates
- B23K7/003—Machines, apparatus, or equipment for cutting long articles, e.g. cast stands, plates, in parts of predetermined length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
- B23Q15/22—Control or regulation of position of tool or workpiece
- B23Q15/24—Control or regulation of position of tool or workpiece of linear position
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Shearing Machines (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、例えば連続鋳造され一定長さに切断
されて得たスラブの如き長尺鋼片を、オンライン
又はオフラインにて二次切断するための方法に関
するものである。Detailed Description of the Invention (Industrial Application Field) The present invention is for secondary cutting, online or offline, of a long steel piece such as a slab obtained by continuous casting and cutting into a certain length. This relates to the method of
（従来技術）
連続鋳造されたスラブは、まずガスカツター等
で所定長さに一次的に切断された後、オンライン
又はオフラインにて必要長さに切断（二次切断）
される。この場合予定スラブ全長に基いて鋼材生
産必要スラブ長さを出し、これにより二次切断を
行なつている。しかし、一次切断時に所定長さに
切断する際測長誤差が多いことから、スラブ全長
精度が低く、そのため二次切断したとき予定通り
に寸法が適合せず、不良品（寸法）が生じ歩留り
が悪い。(Prior art) Continuously cast slabs are first cut to a predetermined length using a gas cutter, etc., and then cut to the required length online or offline (secondary cutting).
be done. In this case, the required slab length for steel production is determined based on the planned overall length of the slab, and secondary cutting is performed based on this. However, since there are many length measurement errors when cutting to a predetermined length during the primary cutting, the accuracy of the overall slab length is low.As a result, the dimensions do not match as planned during the secondary cutting, resulting in defective products (dimensions) and lower yields. bad.
また、従来ではスラブ長さを測定する場合、ス
ラブに接触する測長ロールによつていたが、この
方式はスリツプ等の発生により測長誤差を生じ易
く、これが正確な切断作業の実現を阻害してい
た。 In addition, conventionally, when measuring the length of a slab, a length measuring roll was used that came into contact with the slab, but this method is prone to length measurement errors due to occurrence of slips, etc., which hinders the realization of accurate cutting work. Was.
（発明の目的）
本発明はこのような従来のスラブ切断方法に鑑
みなされたもので、精度の高いかつ歩留りの良い
切断方法を提供することを目的とする。又本発明
の他の目的は、切断を常にほぼ同一位置に維持で
き、搬送ローラを損傷せずに、しかも切断ノロの
処置を容易にするような切断方法を提供すること
にある。(Objective of the Invention) The present invention was made in view of such conventional slab cutting methods, and an object of the present invention is to provide a cutting method with high precision and high yield. Another object of the present invention is to provide a cutting method that allows cutting to be maintained at approximately the same position at all times, without damaging the conveying roller, and in which cutting slag can be easily disposed of.
（発明の構成）
上記目的を達成するための本発明の切断方法
は、一定長さに切断されてローラテーブル上を搬
送されてくる長尺鋼片を二次切断する切断方法に
おいて、鋼片の切断搬送ライン上に、切断トーチ
を備えた切断台車と、該切断台車の搬送下流側に
減速用および停止用の２対のレーザ光照射・受光
器を並設した鋼片先端検出台車と、前記切断台車
を挟んだ搬送上流側に１対のレーザ光照射・受光
器を有する後端検出台車とを配置しておき、前記
切断台車と先端検出台車を予定切断長さに対応す
る距離をおいておよび切断台車をその切断トーチ
が前記ローラテーブルの所定のローラ間になるよ
うに位置させ、搬入してくる鋼片を前記２対のレ
ーザ光照射・受光器にて検出して減速・停止させ
ると共に、慣性による鋼片停止位置ズレを先端検
出台車および切断台車を移動することにより修正
し、次いで後端検出台車により鋼片後端を検出し
て鋼片長さを実測し、これを予定全長と比較して
その差に基づき切断位置を変えて切断することを
特徴とする。(Structure of the Invention) The cutting method of the present invention to achieve the above object is a cutting method that performs secondary cutting on a long steel piece that has been cut to a certain length and is conveyed on a roller table. On the cutting conveyance line, there is a cutting cart equipped with a cutting torch, a billet tip detection cart having two pairs of laser beam irradiation/receivers for deceleration and stopping in parallel on the conveyance downstream side of the cutting cart; A trailing edge detection truck having a pair of laser beam irradiation/receivers is placed on the upstream side of the transport across the cutting truck, and the cutting truck and tip detection truck are placed at a distance corresponding to the planned cutting length. Then, the cutting cart is positioned so that its cutting torch is between the predetermined rollers of the roller table, and the two pairs of laser beam irradiators and light receivers detect the incoming steel piece and decelerate and stop it. , the shift in the stop position of the steel billet due to inertia is corrected by moving the tip detection cart and the cutting cart, and then the rear end of the billet is detected by the rear end detection cart, the actual length of the steel billet is measured, and this is compared with the planned total length. and the cutting position is changed based on the difference.
以下本発明の詳細を図面に基いて説明する。 The details of the present invention will be explained below based on the drawings.
第１図は本発明を実施するための鋼片切断搬送
ラインを示すもので、被切断材である鋼片（スラ
ブ）Ｓを搬送するローラテーブル１の両側にはレ
ール２が敷設され、このレール２上には３台の台
車、即ち切断トーチ３を搭載した切断台車４と、
鋼片先端検出台車５と、鋼片検出後端台車６が乗
載し、移動自在になつている。これらの台車はい
ずれも鋼片が通過可能なように門型に形成されて
いる（第２図）。 FIG. 1 shows a steel billet cutting and conveying line for carrying out the present invention, in which rails 2 are laid on both sides of a roller table 1 that conveys a steel billet (slab) S as the material to be cut. 2, there are three carts, namely a cutting cart 4 carrying a cutting torch 3;
A billet front end detection cart 5 and a steel billet detection rear end cart 6 are mounted and are movable. All of these carts are gate-shaped so that steel pieces can pass through them (Fig. 2).
切断台車４は通常用いられているガス切断機構
を備えたもので、切断トーチ３は互いに接近かつ
離隔する動きをもつ一対のものからなる。また、
先端検出台車５には、鋼片幅方向に向い合う如く
２対のレーザ光を利用した検出器が設置されてい
る。検出器の一方は搬送されてくる鋼片Ｓの減速
用であり、レーザ光照射器７ａおよび受光器７ｂ
からなり、検出器の他方は減速用検出器より鋼片
進進行方向の下流側に並設され鋼片停止用であ
り、同じくレーザ光照射器８ａおよび受光器８ｂ
からなる。さらに、後端検出台車６にも１対のレ
ーザ光照射器９ａおよび受光器９ｂが設けられて
いる。 The cutting trolley 4 is equipped with a commonly used gas cutting mechanism, and the cutting torches 3 consist of a pair of torches that move toward and away from each other. Also,
Two pairs of detectors using laser beams are installed on the tip detection cart 5 so as to face each other in the width direction of the steel piece. One of the detectors is for decelerating the steel piece S being conveyed, and includes a laser beam irradiator 7a and a light receiver 7b.
The other detector is installed downstream of the deceleration detector in the advancing direction of the steel piece and is used to stop the steel piece, and also includes a laser beam irradiator 8a and a light receiver 8b.
Consisting of Further, the rear end detection cart 6 is also provided with a pair of laser beam irradiators 9a and a light receiver 9b.
なお、本発明において検出器としてレーザ光を
利用したものを用いているが、これは他の方式の
ものに比し精度よく対象物を検出でき、微小な制
御が可能となるという理由による。 Note that in the present invention, a detector using laser light is used because it can detect an object with higher accuracy than other types of detectors, and allows fine control.
次に、本発明の切断操作について説明する。 Next, the cutting operation of the present invention will be explained.
第３図イに示すように、切断台車４を所定の切
断位置（好ましくは切断時に下方のローラを損傷
しないように隣り合うローラ間の位置とする）に
止めてから、原点（待機位置）にある先端検出台
車５（便宜上以下第１台車と称する）を図の右方
へ移動し、切断トーチ３と停止用検出器８との距
離が予定切断長L0になる位置で停止する。この
状態で右方から鋼片Ｓを搬入するが、鋼片先端が
第３図ロに示す如く減速用検出器７にて検出され
ると、直ちに搬送ローラの駆動部に減速指令が出
され、次いで先端が停止用検出器８にて検出され
ると、直ちに搬送ローラの駆動は停止する。 As shown in FIG. 3A, the cutting cart 4 is stopped at a predetermined cutting position (preferably between adjacent rollers so as not to damage the lower roller during cutting), and then returned to the origin (standby position). A tip detection cart 5 (hereinafter referred to as a first cart for convenience) is moved to the right in the figure and stopped at a position where the distance between the cutting torch 3 and the stop detector 8 becomes the planned cutting length L 0 . In this state, the steel billet S is carried in from the right side, and when the tip of the steel billet is detected by the deceleration detector 7 as shown in FIG. Next, when the leading end is detected by the stop detector 8, the drive of the conveyance roller is immediately stopped.
しかし、第３図ハに示すように、搬送ローラが
停止したからといつても、重量物である鋼片Ｓに
は慣性が働き、鋼片先端は停止用検出器８を越え
た位置（このオーバーした距離をΔlとする）で
停止することが多い。この位置ズレは第３図ニの
如く第１台車５を左方へ移動し、停止用検出器８
が鋼片先端を検出した時点で止めるが、このとき
第１台車５の移動量を計測してΔlを測長する。
また、同時に後端検出台車６（以下第２台車と称
する）を左方へ移動し、鋼片後端を検出するが、
このときも該第２台車６の移動量を測定してお
く。 However, as shown in FIG. The distance exceeded is Δl). This positional shift causes the first truck 5 to move to the left as shown in FIG. 3D, and the stop detector 8
stops when it detects the tip of the steel piece, and at this time, the amount of movement of the first cart 5 is measured to measure the length Δl.
At the same time, the rear end detection cart 6 (hereinafter referred to as the second cart) is moved to the left to detect the rear end of the steel piece.
At this time as well, the amount of movement of the second cart 6 is measured.
実際の操作においては、切断台車４の最初の停
止位置や第１、第２台車５，６の原点位置などを
演算制御部（たとえばコンピユータ）に入れてお
き、L0、実測したΔl、第２台車６の移動量をそ
のつど入力してゆけば、切断しようとする鋼片Ｓ
の全長は第２台車６による後端検出の時点で実測
値が得られる。 In actual operation, the initial stop position of the cutting cart 4, the origin positions of the first and second carts 5, 6, etc. are entered into the calculation control unit (for example, a computer), and L 0 , the actually measured Δl, the second By inputting the amount of movement of the cart 6 each time, the steel piece S to be cut is
The actual measurement value of the total length of the vehicle can be obtained at the time when the second truck 6 detects the rear end.
この鋼片Ｓの全長の実測値を制御部へ入力し、
予め入力されている当該鋼片の予定全長と比較
し、両者に差がなければそのままの切断位置で切
断作業を開始する（勿論切断台車はΔlだけ左方
へ移動し、L0の長さで切断する）。両者の値に差
がある場合には実測全長に応じた寸法取りに修正
するため、切断位置を変更する。第３図ホでは
Δl＋α（αは修正分）切断台車４を移動して切断
を行う状態にしている。たとえば、予定全長を10
ｍとしてこれを６ｍと４ｍの２枚の鋼片に寸法取
りしようとする場合に、実測全長が9.5ｍであつ
たとすれば別の寸法取りのたとえば5.5ｍと４ｍ
に切断するように修正すればよい。したがつて、
あらかじめ鋼片の寸法取りの組合せを注文に応じ
て数多く用意し、これをコンピユータに入れてお
き、予定全長と異なる実測全長が出た場合に、こ
の実測全長に合つたもしくはこれに近い寸法取り
に変更できるようにしておけばよい。 Input the actual measured value of the total length of this steel piece S to the control section,
Compare it with the planned total length of the steel piece that has been input in advance, and if there is no difference between the two, start cutting at the same cutting position (of course, the cutting cart will move to the left by Δl, and at the length of L 0 disconnect). If there is a difference between the two values, change the cutting position to correct the dimensions according to the actual measured total length. In FIG. 3E, the cutting cart 4 is moved by Δl+α (α is the correction) to perform cutting. For example, set the planned total length to 10
If you are trying to measure this into two steel pieces of 6m and 4m, and the actual measured total length is 9.5m, then you need to take different dimensions, for example 5.5m and 4m.
You can modify it to cut it. Therefore,
Prepare a large number of combinations of dimensions for steel slabs in advance according to orders, and put these into a computer.If the actual measured total length differs from the planned total length, you can choose a dimension that matches or is close to the actual measured total length. You just need to be able to change it.
なお、切断トーチ３による切断作業が開始され
る前に、第１および第２台車５，６は原点位置に
復帰しておく。切断が終了したなら、ローラテー
ブルを駆動し切断後の鋼片の移動を行い、次の鋼
片切断の準備に入る。 Note that, before the cutting operation by the cutting torch 3 is started, the first and second carts 5 and 6 are returned to their original positions. When cutting is completed, the roller table is driven to move the cut steel piece and prepare for cutting the next steel piece.
（発明の効果）
本発明の切断方法によつて次のような効果が得
られる。(Effects of the Invention) The cutting method of the present invention provides the following effects.
(1) 搬入されてくる鋼片の全長を精度高く測長で
きると共に、この測長値に基いて常に最適の寸
法取りにて鋼片を切断し得るから、クロツプが
大幅に減少し大幅な歩留り向上となる。例え
ば、実操業において厚板注文歩留りで、今まで
の限界とされていた96％を超えたことが確認さ
れた。(1) The total length of the incoming steel billet can be measured with high precision, and the steel billet can always be cut to the optimum dimensions based on this measured length value, resulting in a significant reduction in cropping and a significant increase in yield. It will be an improvement. For example, in actual operations, it was confirmed that the plate order yield exceeded the previous limit of 96%.
(2) 鋼片を単にローラテーブルの駆動停止によつ
て簡単に停止でき、またその慣性による移動も
容易に補正し得る。(2) The steel billet can be easily stopped by simply stopping the drive of the roller table, and its movement due to inertia can be easily corrected.
(3) ほぼ鋼片切断範囲を特定の狭い範囲に決める
ことが可能となるので、この切断位置を搬送ロ
ーラ間の間隔内に限定でき、ローラを下降させ
ずとも損傷せず、しかも切断ノロ処理や集塵、
防音対策が容易となる。(3) Since it is possible to set the cutting range of the steel piece to a specific narrow range, the cutting position can be limited to within the interval between the conveying rollers, and there is no need to lower the rollers to avoid damage, and the cutting slag can be easily removed. and dust collection,
Soundproofing measures become easier.
第１図は本発明の切断方法を実施するための全
体設備の平面配置図、第２図は第１図Ａ−A′線
断面図、第３図イ〜ホは本発明の切断動作フロー
図である。
Ｓ……鋼片、１……ローラテーブル、２……レ
ール、３……切断トーチ、４……切断台車、５…
…先端検出台車、６……後端検出台車、７……減
速用レーザ光照射・受光器、８……停止用レーザ
光照射・受光器、９……後端検出用レーザ光照
射・受光器。
Fig. 1 is a plan layout of the entire equipment for carrying out the cutting method of the present invention, Fig. 2 is a sectional view taken along the line A-A' in Fig. 1, and Fig. 3 A to H are flowcharts of the cutting operation of the present invention. It is. S... Steel billet, 1... Roller table, 2... Rail, 3... Cutting torch, 4... Cutting cart, 5...
...Tip detection cart, 6...Rear end detection cart, 7...Laser light irradiation/receiver for deceleration, 8...Laser light irradiation/receiver for stopping, 9...Laser light irradiation/receiver for rear end detection .
Claims (1)
送されてくる長尺鋼片を二次切断する切断方法に
おいて、鋼片の切断搬送ライン上に、切断トーチ
を備えた切断台車と、該切断台車の搬送下流側に
減速用および停止用の２対のレーザ光照射・受光
器を並設した鋼片先端検出台車と、前記切断台車
を挟んだ搬送上流側に１対のレーザ光照射・受光
器を有する後端検出台車とを配置しておき、前記
切断台車と先端検出台車を予定切断長さに対応す
る距離をおいておよび切断台車をその切断トーチ
が前記ローラテーブルの所定のローラ間になるよ
うに位置させ、搬入してくる鋼片を前記２対のレ
ーザ光照射・受光器にて検出して減速・停止させ
ると共に、慣性による鋼片停止位置ズレを先端検
出台車および切断台車を移動することにより修正
し、次いで後端検出台車により鋼片後端を検出し
て鋼片長さを実測し、これを予定全長と比較して
その差に基づき切断位置を変えて切断することを
特徴とする長尺鋼片の切断方法。1. In a cutting method for secondary cutting a long steel piece cut to a certain length and transported on a roller table, a cutting cart equipped with a cutting torch and the cutting cart are placed on a cutting conveyance line of the steel piece. A billet tip detection cart with two pairs of laser beam irradiators/receivers for deceleration and stopping in parallel on the downstream side of the conveyance, and a pair of laser beam irradiators/receivers on the upstream side of the conveyance with the cutting cart sandwiched therebetween. A rear end detection cart having a rear end detection cart is arranged, the cutting cart and the leading end detection cart are spaced apart from each other by a distance corresponding to the planned cutting length, and the cutting cart is placed such that its cutting torch is positioned between predetermined rollers of the roller table. The incoming steel billet is detected by the two pairs of laser beam irradiation/receivers and decelerated and stopped, and the tip detection cart and cutting cart are moved to detect deviations in the stopping position of the steel billet due to inertia. Then, the rear end of the steel billet is detected by a rear end detection cart, the length of the steel billet is actually measured, and this is compared with the planned total length, and the cutting position is changed based on the difference and the cut is made. How to cut long steel pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19334883A JPS6087962A (en) | 1983-10-18 | 1983-10-18 | Cutting method of long sized billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19334883A JPS6087962A (en) | 1983-10-18 | 1983-10-18 | Cutting method of long sized billet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6087962A JPS6087962A (en) | 1985-05-17 |
| JPH0234264B2 true JPH0234264B2 (en) | 1990-08-02 |
Family
ID=16306402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19334883A Granted JPS6087962A (en) | 1983-10-18 | 1983-10-18 | Cutting method of long sized billet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6087962A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3601523C1 (en) * | 1986-01-20 | 1987-07-16 | Manfred Richter | Process for positioning and measuring workpieces on machining lines |
| DE3834279A1 (en) * | 1988-10-08 | 1990-04-12 | Bwg Bergwerk Walzwerk | METHOD AND SYSTEM FOR THE CHIP-PROCESSING OF SLABS AND BLOCKS |
| KR200250256Y1 (en) * | 2001-07-07 | 2001-11-17 | (주)새터자동화기술 | cutting casting plate machine controller of constant casting process |
| JP4935129B2 (en) * | 2006-03-15 | 2012-05-23 | Ｊｆｅスチール株式会社 | Billet cutting method and billet cutting system |
| CN104511678B (en) * | 2013-09-30 | 2016-08-24 | 宝山钢铁股份有限公司 | Cutting torches slab edge detection method |
| CN110193645B (en) * | 2018-02-24 | 2021-04-13 | 宝山钢铁股份有限公司 | Accurate positioning method for continuous casting slab secondary cutting |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5142187A (en) * | 1974-10-04 | 1976-04-09 | Hitachi Shipbuilding Eng Co | CHUKAINOSETSUDANHOHO OYOBI SETSUDANSOCHI |
| JPS56148004A (en) * | 1980-04-19 | 1981-11-17 | Shinko Electric Co Ltd | Detector for length of cut casting piece in continuous casting equipment |
-
1983
- 1983-10-18 JP JP19334883A patent/JPS6087962A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5142187A (en) * | 1974-10-04 | 1976-04-09 | Hitachi Shipbuilding Eng Co | CHUKAINOSETSUDANHOHO OYOBI SETSUDANSOCHI |
| JPS56148004A (en) * | 1980-04-19 | 1981-11-17 | Shinko Electric Co Ltd | Detector for length of cut casting piece in continuous casting equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6087962A (en) | 1985-05-17 |
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