JP2007275934A - Automatic molten metal pouring system - Google Patents

Automatic molten metal pouring system Download PDF

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JP2007275934A
JP2007275934A JP2006105785A JP2006105785A JP2007275934A JP 2007275934 A JP2007275934 A JP 2007275934A JP 2006105785 A JP2006105785 A JP 2006105785A JP 2006105785 A JP2006105785 A JP 2006105785A JP 2007275934 A JP2007275934 A JP 2007275934A
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pouring
molten metal
parameter
ladle
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JP4565240B2 (en
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Toshimitsu Okane
利光 岡根
Naoki Maru
直樹 丸
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National Institute of Advanced Industrial Science and Technology AIST
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic molten metal pouring system with which the optimization of a parameter for pouring molten metal can easily be performed as duties from the behavior for pouring the molten metal of an expert tecnician to a parameter setting of the automatic molten metal pouring machine. <P>SOLUTION: A bridge circuit 9 is constituted by fixing at least four strain gauges 8 in the same interval at the circumference of the gauge fitting part 7 arranged near a ladle 2 root of a ladle rod 3 and a personal computer 11 detects the molten metal pouring speed variation to calculate a molten metal pouring parameter with the angle variation of the ladle 2 and the weight variation of the molten metal 4 in the ladle 2 by receiving the signals of this bridge circuit 9. Further, the corrections of a sensitivity difference in each strain gauge 8, the unevenness of the fitting position of the strain gauge 8 and the shifting of the fitting angle are performed. Furthermore, the pouring of the molten metal is performed with the molten metal pouring parameter obtained in such way, through the automatic molten metal pouring machine and the adjustment of the molten metal parameter is performed by measuring the molten metal pouring speed variation to obtain the optimum parameter. The automatic molten metal pouring machine performs the pouring of the molten metal for mass-production with this optimum parameter. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、取鍋により鋳型に注湯するに際して、技術者の手を用いることなく自動的に注湯を行うことができるようにした自動注湯システムに関し、特にそのような自動注湯システムにおいて最適に注湯するための制御データとして、熟練技能者の手注ぎの技術を制御パラメータとすることにより、最適な自動注湯を行うことができるようにした自動注湯システムに関する。   The present invention relates to an automatic pouring system that can automatically perform pouring without using a technician's hand when pouring a mold with a ladle, and particularly in such an automatic pouring system. The present invention relates to an automatic pouring system in which optimum automatic pouring can be performed by using as a control parameter the technique of hand pouring by skilled technicians as control data for optimal pouring.

鋳造は、溶けた金属を型に流し込み（注湯）、凝固させ、成型品（鋳物）を得る技術である。ここでは、注湯技術の良否がその品物の欠陥発生率を決める大きな要因になっている。例えば溶融金属の温度を高く設定して注湯すれば、充填性が良くなるものの、ガスの吸収が過大になり、ポロシティの発生による引け巣欠陥などが発生する。逆に温度を低下させると充填性が低下し湯回り不良と呼ばれる欠陥が発生する。また注湯作業により溶湯の流動に乱れが生ずると表面酸化物の巻き込みにより欠陥が発生する。このように、鋳物の歩止まりは注湯技能者の技能に大きく依存しており、注湯技能者はできるだけ低温の溶湯を俗に言う「早く静かに」注湯する技術が求められる。熟練した注湯技能を持つ技能者は、経験から材料組成、鋳物の細部、湯道の方案を勘案して注ぎによる作業を最適化している。   Casting is a technique in which a molten metal is poured into a mold (pouring) and solidified to obtain a molded product (casting). Here, the quality of the pouring technique is a major factor in determining the defect occurrence rate of the product. For example, if the molten metal is poured at a high temperature, the filling property is improved, but the gas absorption becomes excessive and shrinkage defects due to the occurrence of porosity occur. On the other hand, when the temperature is lowered, the filling property is lowered and a defect called poor hot water occurs. Further, when the molten metal flow is disturbed by the pouring work, defects are generated due to the inclusion of surface oxides. Thus, the yield of castings depends greatly on the skill of the pouring technician, and the pouring technician is required to have a technique for pouring "quickly and quietly" that refers to the molten metal as low as possible. Engineers with skilled pouring skills have optimized the pouring work by taking into account the material composition, casting details, and the way of the runner.

一方、注湯作業は危険が伴い、作業者が人手で行うためばらつきも大きい。そのため注湯作業の自動化は安定生産への流れであり、種々の自動注湯装置が開発されている。しかしながら、多くは注湯速度の微妙な変化をコントロールできない装置であり、方案設計に時間をかけて最適化できる大ロットの大量生産には適するが、少量生産には不向きな装置である。   On the other hand, the pouring work is dangerous and has a large variation because it is performed manually by the operator. Therefore, automation of pouring work is a flow toward stable production, and various automatic pouring apparatuses have been developed. However, many of them are devices that cannot control subtle changes in the pouring speed, and are suitable for mass production of large lots that can be optimized over time in designing a plan, but are not suitable for small-scale production.

従来型自動注湯装置のもう一つの問題点として、湯口（注湯口）位置が固定されているという点である。通常、手作業による注湯作業を行う企業では、方案上の最適化を優先して湯口位置は自由に設定している。湯口位置の固定した自動注湯機を導入するためには、それまで蓄積してきた方案を全て破棄して１から設計し直す必要がある。   Another problem with the conventional automatic pouring device is that the pouring gate position is fixed. Normally, companies that perform pouring work by hand manually set the pouring gate position with priority given to optimization in the plan. In order to introduce an automatic pouring machine with a fixed pouring gate position, it is necessary to discard all the plans accumulated so far and redesign from scratch.

上記の自動注湯機の問題点をふまえ、鋳造工程における鋳型の位置制御（ｘ軸）と取鍋の位置制御（ｙ軸）とを組み合わせて、鋳型の湯口の位置を自由に設定できるようにすることにより、任意の湯口位置の鋳型への自動注湯を可能にする自動注湯方法が本発明者等により開発され、特許出願している（「鋳型への自動注湯方法とその装置」：特開平１１−３４２４６３号公報）。   Based on the problems of the above-mentioned automatic pouring machine, the position of the mold gate can be set freely by combining the mold position control (x axis) and ladle position control (y axis) in the casting process. Thus, the present inventors have developed an automatic pouring method that allows automatic pouring of a mold at an arbitrary pouring gate position, and has applied for a patent ("Automatic pouring method and apparatus for casting mold"). : JP-A-11-342463).

この自動注湯装置によると、溶湯を受けた取鍋を角度制御して、湯口から鋳型へと注湯するタイプの装置であるが、取鍋を小さく、傾動速度を角度毎に変化させることを可能にすることにより、技能者による微妙な手注ぎを再現できる。この装置を実用化し、多品種・少量生産に対応できる中小企業向けの生産システムを構築し、１９９７年より実際に生産を行っており、この手法は国内鋳造作業に適した現状では唯一の注湯設備として展開が期待される。
特開平１１−３４２４６３号公報 According to this automatic pouring device, the ladle that receives the molten metal is angle-controlled and poured from the gate into the mold, but the ladle is small and the tilting speed can be changed for each angle. By making it possible, delicate hand pouring by technicians can be reproduced. This equipment has been put into practical use and a production system for small and medium-sized enterprises that can handle high-mix and small-volume production has been built and production has actually been carried out since 1997. Expansion is expected as equipment.
Japanese Patent Laid-Open No. 11-342463

ここで問題として、自動注湯装置の作動に際しては、取鍋の制御のために角度の関数として傾動速度を注湯パラメータとして設定する必要がある。一般的な考え方として注湯速度として最初は早く、途中はゆっくりと、最後にまた速く、と変化させる必要がある。現状では手注ぎによる熟練技能者の注湯挙動を参考にしてトライアンドエラーで設定を行っており、設定値が定まるまでには技術者の経験と、微妙な手直しを入れるという難しいもので、１０?２０回程度と数多くの試行が必要である。そこで、設定値の最適化を助け、試行を減らすシステムを開発して、技術シーズである自動注湯装置の技術改良が求められている。   Here, as a problem, when the automatic pouring device is operated, it is necessary to set the tilting speed as a pouring parameter as a function of the angle in order to control the ladle. As a general idea, it is necessary to change the pouring speed to be fast at the beginning, slowly in the middle, and fast again at the end. At present, setting is done by trial and error with reference to the pouring behavior of skilled technicians by hand pouring, and it is difficult to add the experience of engineers and subtle rework until the set value is determined. ? About 20 times and many trials are necessary. Therefore, there is a need for technical improvement of an automatic pouring device, which is a technical seed, by developing a system that helps optimize set values and reduces trials.

したがって本発明は、溶湯を受けた取鍋を角度制御して、湯口から鋳型へと注湯する自動注湯装置において、取鍋を小さく、傾動速度を角度毎に変化させることを可能にすることにより、技能者による微妙な手注ぎを再現できる装置をより実用化するため、熟練技能者の注湯挙動から注湯機へのパラメータ設定に至る業務である、注湯パラメータの最適化を容易に行うことができるようにすることを主たる目的とし、特に、従来は熟練技能者が注湯挙動を１０−２０回程度行ってデータを取る必要があったものを、３−５回程度の、より少ない試行で設定値が求まるシステムを提供することを目的とする。   Therefore, the present invention makes it possible to make the ladle small and change the tilting speed for each angle in an automatic pouring device that performs angle control of the ladle that has received the molten metal and pours it from the gate to the mold. Therefore, it is easy to optimize the pouring parameters, which is the work from the pouring behavior of skilled technicians to the setting of parameters to the pouring machine, in order to make the equipment that can reproduce subtle hand pouring by technicians more practical. The main purpose is to make it possible to perform the operation, and in particular, in the past, a skilled technician had to perform the pouring behavior about 10-20 times to collect data, and about 3-5 times more An object is to provide a system in which a set value can be obtained with a small number of trials.

本発明に係る自動注湯システムは上記課題を解決するため、取鍋棒の取鍋付け根近傍に設けたゲージ取付部の周囲に、少なくとも４個のひずみゲージを固定してブリッジ回路を構成し、前記ブリッジ回路の信号により熟練作業者が注湯を行う取鍋の角度変化と、取鍋内の溶湯の重量変化により注湯速度変化を検出して注湯パラメータを演算する演算手段を備え、前記演算手段で得た注湯パラメータにより、自動注湯機の取鍋の角度変化及び注湯速度変化を制御して注湯を行う自動注湯機とからなることを特徴とする。   In order to solve the above problems, the automatic pouring system according to the present invention forms a bridge circuit by fixing at least four strain gauges around the gauge mounting portion provided in the vicinity of the ladle root of the ladle bar, An arithmetic means for calculating a pouring parameter by detecting a change in pouring speed by a change in the angle of a ladle in which a skilled worker pours the pouring according to a signal of the bridge circuit and a change in the weight of the molten metal in the ladle, It is characterized by comprising an automatic pouring machine that performs pouring by controlling the angle change and pouring speed change of the ladle of the automatic pouring machine according to the pouring parameters obtained by the calculation means.

本発明に係る他の自動注湯システムは、前記自動注湯システムにおいて、前記演算手段は、各ひずみゲージの感度差、ひずみゲージ装着位置のばらつき、取り付け角度のずれの少なくとも一つの補正を行い注湯パラメータを演算することを特徴とする。   Another automatic pouring system according to the present invention is the automatic pouring system according to the present invention, wherein the calculation means performs at least one correction of a sensitivity difference of each strain gauge, a variation in a strain gauge mounting position, and a mounting angle shift. The hot water parameter is calculated.

本発明に係る他の自動注湯システムは、前記自動注湯システムにおいて、前記演算手段は、前記演算した注湯パラメータにより自動注湯機で注湯を行い、注湯時の注湯速度変化と前記熟練作業者による注湯速度変化とを比較して注湯パラメータを調整して、最適注湯パラメータを演算することを特徴とする。   In another automatic pouring system according to the present invention, in the automatic pouring system, the calculating means performs pouring with an automatic pouring machine according to the calculated pouring parameter, and changes in pouring speed during pouring The optimal pouring parameter is calculated by adjusting the pouring parameter by comparing the pouring speed change by the skilled worker.

本発明によると、従来は熟練技能者が注湯挙動を１０−２０回程度行ってデータを取る必要があったものを、３−５回程度のより少ない試行で、熟練技能者の注湯挙動に基づく取鍋の傾動速度関数を求めることができるようになり、それにより取鍋の傾動角度毎に傾動速度を調節できる、多品種少量生産に適した自動注湯システムを容易に使用することができる。   According to the present invention, in the past, it was necessary for a skilled technician to perform pouring behavior about 10-20 times and to collect data. It is possible to calculate the tilting rate function of the ladle based on this, and it is easy to use an automatic pouring system suitable for high-mix low-volume production that can adjust the tilting rate for each tilting angle of the ladle. it can.

本発明は、熟練技能者の注湯挙動から注湯機へのパラメータ設定に至る業務である、注湯パラメータの最適化を容易に行うことができるようにする課題を、取鍋棒の取鍋付け根近傍に設けたゲージ取付部の周囲に、少なくとも４個のひずみゲージを固定してブリッジ回路を構成し、前記ブリッジ回路の信号により熟練作業者が注湯を行う取鍋の角度変化と、取鍋内の溶湯の重量変化により注湯速度変化を検出して注湯パラメータを演算する演算手段を備え、前記演算手段で得た注湯パラメータにより、自動注湯機の取鍋の角度変化及び注湯速度変化を制御して注湯を行う自動注湯機とから構成したものである。   The present invention relates to a task of enabling easy optimization of pouring parameters, which is a task from pouring behavior of a skilled technician to parameter setting for a pouring machine. A bridge circuit is constructed by fixing at least four strain gauges around the gauge mounting part provided near the base, and the angle change of the ladle where the skilled worker pours hot water according to the signal of the bridge circuit, Computation means for calculating a pouring parameter by detecting a pouring speed change based on a change in the weight of the molten metal in the pan, and by using the pouring parameter obtained by the computing means, the angle change and pouring of the ladle of the automatic pouring machine are provided. It is composed of an automatic pouring machine that performs pouring by controlling the change in the hot water speed.

図１は本発明のシステムの概要図であり、同図（ａ）に示すように鋳込み作業者１が取鍋２の取鍋棒３を持ち、取鍋２を傾けて取鍋２内の溶湯４を鋳型５の湯口６に流し込むとき、この取鍋棒３の取鍋２に対する付け根部分にゲージ固定部７を設けておき、このゲージ固定部７に互いに９０度の等間隔で少なくとも４個のひずみゲージ８を取り付けている例を示している。図示の例においては、４個のひずみゲージ８は図１（ｂ）及び図２に示すようにブリッジ回路９となし、その信号をデータロガー１０によって信号処理し、パソコン１１に出力している。パソコン１１では、作業者１による取鍋の傾き角毎の傾斜速度、取鍋の重量検出による溶湯の重量変化を演算し、必要なデータを記憶し、適宜のデータをモニタ画面１２に表示し、またプリントアウトする。   FIG. 1 is a schematic view of the system of the present invention. As shown in FIG. 1 (a), a casting worker 1 has a ladle bar 3 of a ladle 2 and tilts the ladle 2 to melt the molten metal in the ladle 2. 4 is poured into the pouring gate 6 of the mold 5, a gauge fixing part 7 is provided at the base of the ladle bar 3 with respect to the ladle 2, and at least four pieces are provided at regular intervals of 90 degrees on the gauge fixing part 7. The example which attached the strain gauge 8 is shown. In the illustrated example, the four strain gauges 8 are formed as a bridge circuit 9 as shown in FIGS. 1B and 2, and the signal is processed by the data logger 10 and output to the personal computer 11. The personal computer 11 calculates the inclination speed of the ladle at each inclination angle of the ladle and the change in the weight of the molten metal by detecting the weight of the ladle, stores necessary data, and displays appropriate data on the monitor screen 12. Also print out.

実際の計測に当たっては、ひずみゲージの感度補正、貼付位置補正、回転角補正等を行うことにより、取鍋の重量変化から注湯速度変化が正確に測定できるだけでなく、取鍋の角度変化も測定でき、得られたデータの解析より即時に注湯量・注湯時間も評価可能である。上記のような補正を行うに際し、個々のひずみゲージ１−４が図３のように取り付けられているとき、各ひずみゲージの感度差を補正するときには下記の数式（１）の補正式により補正を行うことができる。

Figure 2007275934
In actual measurement, by performing strain gauge sensitivity correction, sticking position correction, rotation angle correction, etc., not only the ladle weight change can be accurately measured, but also the ladle angle change can be measured. It is possible to evaluate the pouring amount and pouring time immediately by analyzing the obtained data. In performing the correction as described above, when the individual strain gauges 1-4 are attached as shown in FIG. 3, when correcting the sensitivity difference between the strain gauges, the correction is made by the correction formula of the following formula (1). It can be carried out.
Figure 2007275934

また、図３に示すように各ひずみゲージ１〜４が取り付けられているとき、個々の歪ゲージの貼り付け位置の誤差に伴う補正を行う際には、下記の数式（２）の補正式により補正を行うことができる。

Figure 2007275934
Further, when the strain gauges 1 to 4 are attached as shown in FIG. 3, the correction formula of the following formula (2) is used when performing the correction associated with the error of the attaching position of each strain gauge. Correction can be performed.
Figure 2007275934

本発明による自動注湯システムは、上記のような計測手段を用いることにより、例えば図４に示すように、熟練者による試験注湯１５を行うとき、その際の注湯速度変化を精密に測定することができ、その値により自動注湯機１８のためのパラメータ最適モジュール１７を求め、その注湯パラメータによって取鍋の傾動速度関数の補正を行って、自動注湯機１８で鋳込み作業を行う。そのときの注湯速度変化を、注湯速度変化測定装置１９で測定し、その測定結果を先の最適モジュールのパラメータにフィードバックし、注湯パラメータをより適正なものとすることができる。この計測手段で試験注湯作業を実際に行って得られた測定データを図６に示す。   The automatic pouring system according to the present invention uses the measuring means as described above, for example, as shown in FIG. 4, when performing a test pouring 15 by a skilled person, the change in pouring speed at that time is accurately measured. The parameter optimum module 17 for the automatic pouring machine 18 is obtained from the value, and the tilting speed function of the ladle is corrected by the pouring parameter, and the pouring operation is performed by the automatic pouring machine 18. . The pouring speed change at that time is measured by the pouring speed change measuring device 19, and the measurement result is fed back to the parameters of the previous optimum module, so that the pouring parameters can be made more appropriate. FIG. 6 shows measurement data obtained by actually performing the test pouring work with this measuring means.

上記のようなシステムは、本発明者等によって開発された従来の注湯速度変化可能な自動注湯システムに対して図５に示すように適用される。即ち、従来のプロセス２１においては、鋳造方案の設定２２を行い、それに基づいて造型２３を行い、熟練技能者による試験注湯２４を行う。そのときの注湯速度変化の注湯挙動を観察し、またそのときの注湯結果を検査２５して適切に注湯できているときには、適宜の注湯パラメータ設定２７を行う。   The system as described above is applied to a conventional automatic pouring system that has been developed by the present inventors and is capable of changing the pouring speed as shown in FIG. That is, in the conventional process 21, a casting plan setting 22 is performed, a molding process 23 is performed based on the casting plan setting 22, and a test pouring 24 is performed by a skilled technician. The pouring behavior of the pouring speed change at that time is observed, and when the pouring result at that time is inspected 25 and pouring can be appropriately performed, an appropriate pouring parameter setting 27 is performed.

その注湯パラメータを用いて自動注湯機２８により実際に注湯を行い、そのときの注湯挙動を観察して注湯挙動が未だ不適切の時にはパラメータを再設定し、再設定した注湯パラメータにより自動注湯機で注湯を行い、更に注湯挙動を観察する。また、必要とするときに再度熟練技能者による試験注湯を行い、前記作動を繰り返すことにより、トライアンドエラーによるパラメータの設定作業が行われ、最終的に適切と思われる注湯パラメータを得て、それにより自動注湯機２８による量産が行われる。   Using the pouring parameters, the automatic pouring machine 28 actually pours the water, observes the pouring behavior at that time, resets the parameters when the pouring behavior is still inappropriate, and reset the pouring. According to the parameters, the automatic pouring machine is used for pouring, and the pouring behavior is observed. In addition, test pouring by skilled technicians is performed again when necessary, and by repeating the above operation, parameter setting work by trial and error is performed, and finally pouring parameters that are considered appropriate are obtained. Thereby, mass production by the automatic pouring machine 28 is performed.

このような従来の自動注湯機のシステムに対して、本発明によるシステム２９は、前記試験注湯２４と同様に熟練者による試験注湯３０を行うものであるが、従来は１０−２０回行わなければならなかった試験注湯は３回程度行えば良い。そのときの注湯速度変化を前記のような計測手法により精密に測定し、それにより自動注湯パラメータの最適化システム３１によってパラメータを設定し、自動注湯機３２により自動注湯を行い、そのときの注湯速度変化を測定する。その際の注湯速度変化は、取鍋が支持機構に支持されているので、広く用いられるロードセル等の各種計測機を用いて容易に、且つ精密に測定することができ、そのデータを解析することにより注湯速度変化の測定を行うことができる。この注湯速度変化の精密な測定結果により自動注湯パラメータの調整を行い、そのパラメータによって自動注湯機による注湯を行い、注湯速度変化を更にフィードバックすることにより最適な自動注湯パラメータを得ることができる。   In contrast to such a conventional automatic pouring machine system, the system 29 according to the present invention performs the test pouring 30 by a skilled person as in the case of the test pouring 24, but in the prior art 10-20 times. The test pouring that had to be performed may be performed about three times. The pouring speed change at that time is precisely measured by the measurement method as described above, and parameters are set by the automatic pouring parameter optimization system 31, and automatic pouring is performed by the automatic pouring machine 32. Measure the pouring rate change at the time. Since the ladle is supported by the support mechanism, the pouring speed change at that time can be easily and precisely measured using various measuring instruments such as widely used load cells, and the data is analyzed. Therefore, it is possible to measure the change in pouring speed. The automatic pouring parameter is adjusted based on the precise measurement result of the pouring speed change, pouring is performed by the automatic pouring machine based on the parameter, and the optimum pouring parameter is determined by further feeding back the pouring speed change. Obtainable.

上記のようにパラメータ最適化モジュールからなる自動注湯パラメータ最適化システムを構築し、熟練技能者による試験注湯データと自動注湯機の注湯測定データを比較し、上記特性評価データから注湯パラメータ補正量を計算させている。図７は、ある鋳造法案における試行回数３回での熟練技能者の試験注湯、自動注湯機の注湯データ、数値シミュレーションによるモデル計算結果を示す。自動注湯機のデータは試験注湯データと良く一致しており、また、数値シミュレーションでも良く再現できていることが分かる。   As described above, an automatic pouring parameter optimization system consisting of parameter optimization modules is constructed, and test pouring data by skilled technicians is compared with pouring measurement data of an automatic pouring machine, and pouring is performed from the above characteristic evaluation data. The parameter correction amount is calculated. FIG. 7 shows a model calculation result based on a test pouring of skilled technicians, pouring data of an automatic pouring machine, and numerical simulation in a certain casting method with three trials. It can be seen that the data of the automatic pouring machine is in good agreement with the test pouring data and can be reproduced well by numerical simulation.

本発明における計測システムの説明図である。It is explanatory drawing of the measurement system in this invention. 同計測システムの計測信号処理説明図である。It is measurement signal processing explanatory drawing of the measurement system. ゲージ固定部におけるゲージ取り付け態様を示す図である。It is a figure which shows the gauge attachment aspect in a gauge fixing | fixed part. 本発明において最適化モジュールパラメータを得るシステムのブロック図である。1 is a block diagram of a system for obtaining optimization module parameters in the present invention. FIG. 本発明を従来のプロセスに適用する例を示す図である。It is a figure which shows the example which applies this invention to the conventional process. 本測定システムによる試験注湯作業により得られた測定データの例である。It is an example of the measurement data obtained by the test pouring work by this measurement system. 熟練技能者試行回数３回での熟練技能者の試験注湯、自動注湯機の注湯データ、数値シミュレーションによるモデル計算結果を示す図である。It is a figure which shows the model calculation result by the test pouring of the skilled engineer by the skill technician's trial frequency | count of 3 times, the pouring data of an automatic pouring machine, and a numerical simulation.

符号の説明Explanation of symbols

１ 技能者
２ 取鍋
３ 取鍋棒
４ 溶湯
５ 鋳型
６ 湯口
７ ゲージ固定部
８ ひずみゲージ
９ ブリッジ回路
１０ データロガー
１１ パソコン 1 technician 2 ladle 3 ladle bar 4 molten metal 5 mold 6 pouring gate 7 gauge fixing part 8 strain gauge 9 bridge circuit 10 data logger 11 personal computer

Claims (3)

取鍋棒の取鍋付け根近傍に設けたゲージ取付部の周囲に、少なくとも４個のひずみゲージを固定してブリッジ回路を構成し、前記ブリッジ回路の信号により熟練作業者が注湯を行う取鍋の角度変化と、取鍋内の溶湯の重量変化により注湯速度変化を検出して注湯パラメータを演算する演算手段を備え、
前記演算手段で得た注湯パラメータにより、自動注湯機の取鍋の角度変化及び注湯速度変化を制御して注湯を行う自動注湯機とからなることを特徴とする自動注湯システム。 A ladle where at least four strain gauges are fixed around a gage mounting portion provided near the ladle base of the ladle bar to form a bridge circuit, and a skilled worker pours hot water according to the signal from the bridge circuit And a calculation means for calculating a pouring parameter by detecting a pouring speed change based on a change in the angle and a change in the weight of the molten metal in the ladle,
An automatic pouring system comprising an automatic pouring machine that performs pouring by controlling the angle change and pouring speed change of the ladle of the automatic pouring machine according to the pouring parameters obtained by the calculating means . 前記演算手段は、各ひずみゲージの感度差、ひずみゲージ装着位置のばらつき、取り付け角度のずれの少なくとも一つの補正を行い注湯パラメータを演算することを特徴とする請求項１記載の自動注湯システム。   2. The automatic pouring system according to claim 1, wherein the calculating means calculates a pouring parameter by correcting at least one of a sensitivity difference of each strain gauge, a variation in a strain gauge mounting position, and a displacement of an attachment angle. . 前記演算手段は、前記演算した注湯パラメータにより自動注湯機で注湯を行い、注湯時の注湯速度変化と前記熟練作業者による注湯速度変化とを比較して注湯パラメータを調整して、最適注湯パラメータを演算することを特徴とする請求項１または２に記載の自動注湯システム。   The calculating means performs pouring with an automatic pouring machine based on the calculated pouring parameter, and adjusts the pouring parameter by comparing the pouring speed change during pouring with the pouring speed change by the skilled worker. The automatic pouring system according to claim 1 or 2, wherein an optimum pouring parameter is calculated.
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