JPH11254542A - Monitoring system for stereo lithographic apparatus - Google Patents
Monitoring system for stereo lithographic apparatusInfo
- Publication number
- JPH11254542A JPH11254542A JP10059537A JP5953798A JPH11254542A JP H11254542 A JPH11254542 A JP H11254542A JP 10059537 A JP10059537 A JP 10059537A JP 5953798 A JP5953798 A JP 5953798A JP H11254542 A JPH11254542 A JP H11254542A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- measuring
- liquid level
- output
- monitoring system
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、レーザ光の照射に
よって硬化する光硬化性樹脂を資材として、立体造形物
を成形する光造形装置に関し、特に装置の運転状態を監
視するためのモニタリングシステムに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical molding apparatus for molding a three-dimensional object using a photocurable resin which is cured by irradiation with a laser beam, and more particularly to a monitoring system for monitoring an operation state of the apparatus. Things.
【０００２】[0002]
【従来の技術】電気機器等の各種商品の開発過程におい
ては、商品の立体モデルを作製して、デザインや動作に
ついてのチェックが行なわれるが、近年の商品のライフ
サイクルの短縮化に伴って、より短期間内に立体モデル
を作製する必要が生じている。そこで、樹脂槽内の光硬
化性樹脂の表面にレーザ光を照射して、光硬化性樹脂を
硬化させることによって立体造形物を成形する光造形装
置が開発されている(米国特許第4,575,300号、特公平5-
18704号)。2. Description of the Related Art In the development process of various products such as electric appliances, a three-dimensional model of the product is created, and the design and operation are checked. However, with the recent shortening of the product life cycle, There is a need to create a three-dimensional model within a shorter period of time. Therefore, a laser molding device that irradiates the surface of the photocurable resin in the resin tank with a laser beam and cures the photocurable resin to form a three-dimensional molded object has been developed (U.S. Pat.No. 4,575,300, Tokuhei 5-
18704).
【０００３】光造形装置においては、図８に示す様に、
樹脂槽(２)内の光硬化性樹脂(90)中に、駆動機構(３)に
よって昇降駆動される昇降テーブル(21)が水平に配置さ
れる。レーザ源には、例えばアルゴンガスレーザ等の定
常レーザ発振装置(41)が用いられ、レーザ発振装置(41)
から出射される一定光強度のレーザ光は、光学系や走査
系を内蔵したプロジェクター(４)を経て、光硬化性樹脂
(90)の表面に照射される。駆動機構(３)及びプロジェク
ター(４)には制御装置(５)が接続されている。制御装置
(５)は、ＣＡＤシステム(図示省略)により設計された立
体造形物の形状データに基づき、該立体形状を高さ方向
に等間隔にスライスした等高線データを作成し、該等高
線データに基づいて、駆動機構(３)及びプロジェクター
(４)に対する制御信号を作成する。In an optical shaping apparatus, as shown in FIG.
An elevating table (21), which is driven up and down by a driving mechanism (3), is horizontally arranged in the photocurable resin (90) in the resin tank (2). For the laser source, for example, a steady laser oscillation device (41) such as an argon gas laser is used, and the laser oscillation device (41)
Laser light of a constant light intensity emitted from the light-curing resin passes through a projector (4) with a built-in optical system and scanning system.
The surface of (90) is irradiated. A control device (5) is connected to the drive mechanism (3) and the projector (4). Control device
(5) creates contour data obtained by slicing the three-dimensional shape at equal intervals in the height direction based on shape data of a three-dimensional structure designed by a CAD system (not shown), and based on the contour data, Drive mechanism (3) and projector
Create a control signal for (4).
【０００４】上記光造形装置においては、昇降テーブル
(21)が一定ピッチ(０.０５〜０.３mm程度)で樹脂槽(２)
内を鉛直方向(Ｚ方向)に降下すると共に、プロジェクタ
ー(４)から出射されるレーザ光が、昇降テーブル(21)上
に光硬化性樹脂(90)を前記等高線データに応じてＸ−Ｙ
方向に走査する。これによって、昇降テーブル(21)上の
樹脂層は、前記等高線データに応じた形状に硬化し、該
硬化樹脂の積層により、最終的に所定形状の立体造形物
(９)が得られることになる。In the above-mentioned optical shaping apparatus, the lifting table
(21) is a resin tank (2) at a constant pitch (about 0.05 to 0.3 mm)
The laser beam emitted from the projector (4) descends in the vertical direction (Z direction), and the photo-curable resin (90) is moved on the elevating table (21) on the XY table in accordance with the contour data.
Scan in the direction. As a result, the resin layer on the elevating table (21) is cured into a shape according to the contour data, and finally the three-dimensional object having a predetermined shape is formed by laminating the cured resin.
(9) is obtained.
【０００５】[0005]
【発明が解決しようとする課題】ところで、光造形装置
においては、造形物(９)内の光硬化性樹脂(90)の液面位
が変動したり、光硬化性樹脂(90)に照射されるレーザ光
の出力が低下したりすると、正確な形状の造形物(９)が
得られなくなる等、造形物(９)の精度や品質が低下する
ことになる。そこで、従来の光造形装置においては、造
形物(９)内の光硬化性樹脂(90)の液面位を測定するため
の液面計や、レーザ光の液面位における出力を測定する
ための出力計が配備され、運転状態の監視が行なわれて
いる。By the way, in the optical molding apparatus, the liquid level of the photocurable resin (90) in the molded article (9) fluctuates or the photocurable resin (90) is irradiated with the light. If the output of the laser beam is reduced, the accuracy and quality of the modeled object (9) will be reduced, for example, the modeled object (9) having an accurate shape cannot be obtained. Therefore, in the conventional optical shaping apparatus, a liquid level meter for measuring the liquid level of the photocurable resin (90) in the molded object (9) and a liquid level meter for measuring the output of the laser light at the liquid level. Power meters are deployed to monitor operating conditions.
【０００６】ところが、従来の光造形装置においては、
その時点における液面位や出力を知ることは出来るが、
これらのデータの瞬時値だけでは、造形物(９)の精度や
品質に悪影響を及ぼす因子を分析することは困難であ
り、光造形装置(１)の運転状態の的確な把握や造形不良
の予知、更には保守点検を行なうべき時期の予測は不可
能であった。However, in the conventional stereolithography apparatus,
You can know the liquid level and output at that time,
It is difficult to analyze factors that have an adverse effect on the accuracy and quality of the modeled object (9) using only the instantaneous values of these data, and it is necessary to accurately grasp the operation state of the optical molding device (1) and predict a molding defect. It was not possible to predict when maintenance and inspection should be performed.
【０００７】そこで本発明の目的は、造形物の精度や品
質に悪影響を及ぼす因子の分析が可能となる、光造形装
置のモニタリングシステムを提供することである。更に
本発明の目的は、運転状態が悪化したときに、その事態
をオペレータに的確に報知することが出来る、光造形装
置のモニタリングシステムを提供することである。SUMMARY OF THE INVENTION It is an object of the present invention to provide a monitoring system for an optical shaping apparatus that enables analysis of factors that adversely affect the accuracy and quality of a formed object. It is a further object of the present invention to provide a monitoring system for an optical shaping apparatus capable of accurately notifying an operator of an operating condition when the operating condition has deteriorated.
【０００８】[0008]
【課題を解決する為の手段】本発明に係る光造形装置の
モニタリングシステムにおいては、装置本体(10)に、運
転状態を表わす各種のデータを測定するため測定系が配
備され、該測定系から得られる測定データは、情報処理
装置に供給して、必要な処理を施した上、樹脂(90)の積
層毎の時系列運転監視データとして記録される。In the monitoring system for an optical shaping apparatus according to the present invention, a measuring system for measuring various data representing an operation state is provided in the apparatus main body (10). The obtained measurement data is supplied to an information processing device, subjected to necessary processing, and recorded as time-series operation monitoring data for each layer of the resin (90).
【０００９】本発明に係る光造形装置のモニタリングシ
ステムによれば、装置の運転状態が時系列運転監視デー
タとして記録されるので、データの瞬時値のみならず、
その変化の傾向に基づいて、造形物(９)の精度や品質に
悪影響を及ぼす因子を分析することが可能であり、それ
によって、装置の運転状態の的確な把握、造形不良の予
知、更には保守点検を行なうべき時期の予測が可能とな
る。According to the monitoring system for an optical shaping apparatus according to the present invention, the operating state of the apparatus is recorded as time-series operation monitoring data.
Based on the tendency of the change, it is possible to analyze factors that adversely affect the accuracy and quality of the modeled object (9), thereby accurately grasping the operation state of the device, predicting a molding defect, and furthermore, It is possible to predict when maintenance should be performed.
【００１０】具体的には、情報処理装置は、測定データ
に基づいて運転状態の悪化を判断する判断手段と、判断
手段によって運転状態の悪化が検知されたとき、警報を
発するための出力装置とを具えている。これによって、
オペレータは、装置の運転状態が悪化したとき、その事
態を的確に知ることが出来、迅速な対処が可能である。[0010] Specifically, the information processing apparatus includes a judging means for judging the deterioration of the driving condition based on the measurement data, and an output device for issuing an alarm when the deterioration of the driving condition is detected by the judging device. It has. by this,
When the operating state of the apparatus is deteriorated, the operator can know the situation accurately and can take quick action.
【００１１】更に具体的構成において、測定系には、レ
ーザ光の出射部における出力と光硬化性樹脂(90)の液面
位における出力を測定するための出力計と、光硬化性樹
脂(90)の液面位の変動を測定するための液面計と、装置
本体(10)を冷却するための冷却水の出口温度を測定する
ための温度計とが含まれている。そして、情報処理装置
の判断手段は、レーザ光の出射部における出力に対する
樹脂液面位における出力の比率が所定の閾値を下回った
かどうかを判断する第１判断部と、光硬化性樹脂(90)の
液面位の変動量が所定の閾値を上回ったかどうかを判断
する第２判断部と、冷却水の出口温度が所定の閾値を上
回ったかどうかを判断する第３判断部と、樹脂液面位に
おけるレーザ光の出力が所定の閾値を下回ったかどうか
を判断する第４判断部とを有し、何れかの判断部によっ
て異常が判断されたとき、出力装置によって警報が発せ
られる。In a more specific configuration, the measuring system includes an output meter for measuring the output at the laser beam emitting portion and the output at the liquid level of the photocurable resin (90), and a photocurable resin (90). ), And a thermometer for measuring the outlet temperature of the cooling water for cooling the apparatus body (10). And a first determination unit configured to determine whether a ratio of an output at the resin liquid level to an output at the emission unit of the laser light is lower than a predetermined threshold value, and a photocurable resin (90). A second judging unit for judging whether the fluctuation amount of the liquid level of the cooling water exceeds a predetermined threshold value, a third judging unit for judging whether the outlet temperature of the cooling water has exceeded a predetermined threshold value, And a fourth determination unit that determines whether the output of the laser light at the time is below a predetermined threshold value. When any of the determination units determines an abnormality, the output device issues an alarm.
【００１２】上記具体的構成によれば、装置の運転状態
の悪化や造形不良の発生をより的確に予知することが出
来、この様な場合には早い時期に保守点検を行なう等、
適切な対処が可能となる。According to the above-described specific configuration, it is possible to more accurately predict the deterioration of the operation state of the apparatus and the occurrence of molding defects. In such a case, maintenance and inspection are performed at an early stage.
Appropriate measures can be taken.
【００１３】[0013]
【発明の効果】本発明に係る光造形装置のモニタリング
システムによれば、造形物の精度や品質に悪影響を及ぼ
す因子の分析が可能であり、運転状態の悪化や造形不良
の発生を的確に知ることが出来る。According to the monitoring system for an optical shaping apparatus according to the present invention, it is possible to analyze factors that adversely affect the accuracy and quality of a formed object, and to accurately know the deterioration of an operation state and the occurrence of a shaping defect. I can do it.
【００１４】[0014]
【発明の実施の形態】以下、本発明の実施の形態につ
き、図面に沿って具体的に説明する。図１に示す如く本
発明に係る光造形装置(１)は、従来と同じ構成の装置本
体(10)に、後述のモニタリングシステムを装備したもの
である。尚、装置本体(10)には冷却装置(11)が連結され
ている。該冷却装置(11)は熱交換器(12)を内蔵し、該熱
交換器(12)には、水道水が流れる一次側給水管(13)と一
次側排水管(14)が接続されると共に、装置本体(10)を冷
却するための蒸留水が循環する二次側給水管(15)及び二
次側排水管(16)が接続されている。これによって、装置
本体(10)が冷却される。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. As shown in FIG. 1, an optical shaping apparatus (1) according to the present invention is provided with an apparatus main body (10) having the same configuration as that of the related art and equipped with a monitoring system described later. Note that a cooling device (11) is connected to the device main body (10). The cooling device (11) incorporates a heat exchanger (12), and the heat exchanger (12) is connected to a primary water supply pipe (13) through which tap water flows and a primary water discharge pipe (14). In addition, a secondary water supply pipe (15) and a secondary drain pipe (16) through which distilled water for cooling the apparatus body (10) circulates are connected. Thereby, the device main body (10) is cooled.
【００１５】樹脂槽(２)内には、図７(ａ)(ｂ)に示す様
に、前記駆動機構(３)によって駆動される昇降テーブル
(21)、ナイフ(22)、及びディッパー(23)が配置されてい
る。ディッパー(23)は、先ず図７(ａ)の如く光硬化性樹
脂(90)の液中から上昇することによって光硬化性樹脂(9
0)を汲み上げ、その後、同図(ｂ)の如く水平移動して、
硬化した樹脂層の表面に未硬化の樹脂を塗布するための
ものである。ナイフ(22)は、ディッパー(23)の後方を水
平方向に駆動されて、光硬化性樹脂(90)の液面を平滑化
するものである。尚、昇降テーブル(21)の降下に伴っ
て、図示省略する液面位調整ブロックが光硬化性樹脂(9
0)の液中から徐々に引き上げられ、光硬化性樹脂(90)の
液面位が一定に保たれる様になっている。As shown in FIGS. 7A and 7B, a lifting table driven by the driving mechanism (3) is provided in the resin tank (2).
(21), knife (22) and dipper (23) are arranged. The dipper (23) first rises from the liquid of the photocurable resin (90) as shown in FIG.
0), and then move horizontally as shown in FIG.
This is for applying uncured resin to the surface of the cured resin layer. The knife (22) is driven in the horizontal direction behind the dipper (23) to smooth the liquid surface of the photocurable resin (90). The liquid level adjusting block (not shown) is moved along with the lowering of the lifting table (21).
The liquid level of the photocurable resin (90) is kept constant by being gradually pulled up from the liquid of (0).
【００１６】上記光造形装置(１)の運転状態や造形状態
を監視するためのモニタリングシステムとして、図１に
示す如くマイクロコンピュータ等から構成される情報処
理装置(６)が配備される。該情報処理装置(６)は、デー
タ出力装置としてディスプレイ(61)を具えている。該情
報処理装置(６)の動作については後述する。As a monitoring system for monitoring the operation state and the molding state of the optical molding apparatus (1), an information processing apparatus (6) including a microcomputer and the like as shown in FIG. 1 is provided. The information processing device (6) includes a display (61) as a data output device. The operation of the information processing device (6) will be described later.
【００１７】測定系として、冷却装置(11)の一次側給水
管(13)及び二次側給水管(15)には夫々、一次側流量計
(７)及び二次側流量計(71)が取り付けられる。又、一次
側給水管(13)、一次側排水管(14)、二次側給水管(15)及
び二次側排水管(16)には夫々、温度計(72)(73)(74)(75)
が取り付けられている。これらの流量計(７)(71)及び温
度計(72)(73)(74)(75)から得られる一次側冷却水流量Ｑ
１、二次側冷却水流量Ｑ２、一次側冷却水入口温度Ｔc
1、一次側冷却水出口温度Ｔc2、二次側冷却水入口温度
Ｔc3、及び二次側冷却水出口温度Ｔc4は、情報処理装置
(６)へ供給される。As a measurement system, a primary flow meter (13) and a secondary flow pipe (15) of the cooling device (11) are respectively provided.
(7) and the secondary flow meter (71) are attached. In addition, the thermometers (72), (73), and (74) are provided for the primary side water supply pipe (13), the primary side drainage pipe (14), the secondary side water supply pipe (15), and the secondary side drainage pipe (16), respectively. (75)
Is attached. Primary-side cooling water flow rate Q obtained from these flowmeters (7) (71) and thermometers (72) (73) (74) (75)
1. Secondary side cooling water flow rate Q2, Primary side cooling water inlet temperature Tc
1. The primary cooling water outlet temperature Tc2, the secondary cooling water inlet temperature Tc3, and the secondary cooling water outlet temperature Tc4 are information processing devices.
Is supplied to (6).
【００１８】一方、装置本体(10)には、室内の湿度Ｈa
及び温度Ｔaを測定するための湿温度計(79)が取り付け
られており、これらの測定データは情報処理装置(６)へ
供給される。樹脂槽(２)には、光硬化性樹脂の温度Ｔr
を測定するための温度計(76)、光硬化性樹脂の液面位
(造形開始時の液面位を基準とする液面位の変動)Ｌrを
測定するための液面計(77)、及びレーザ光の樹脂液面位
における出力(レーザ液面出力)Ｗsを測定するための出
力計(78)が配備されており、これらの測定データは情報
処理装置(６)へ供給される。又、前述のディッパーの動
作を表わす信号Ｓが情報処理装置(６)へ供給される。
又、レーザ発振装置(41)から得られるレーザ光の出力Ｗ
t(レーザ内部出力)と、レーザを発振させるための駆動
電流Ａt(レーザ内部電流)が情報処理装置(６)へ供給さ
れる。更に、造形開始からの経過時間が、制御装置(５)
から情報処理装置(６)へ供給される。On the other hand, the apparatus main body (10) has room humidity Ha.
And a humidity thermometer (79) for measuring the temperature Ta, and these measurement data are supplied to the information processing device (6). In the resin tank (2), the temperature Tr of the photocurable resin is set.
Thermometer (76) for measuring the liquid level of the photocurable resin
(Fluctuation of liquid level with reference to liquid level at the start of modeling) Liquid level gauge (77) for measuring Lr, and measurement of laser light output (laser liquid level output) Ws at resin liquid level An output meter (78) for performing the measurement is provided, and these measurement data are supplied to the information processing device (6). Further, a signal S representing the operation of the dipper is supplied to the information processing device (6).
Also, the output W of the laser light obtained from the laser oscillation device (41)
t (laser internal output) and a drive current At (laser internal current) for oscillating the laser are supplied to the information processing device (6). In addition, the elapsed time from the start of modeling is controlled by the control device (5).
To the information processing device (6).
【００１９】図２は、情報処理装置(６)が実行する情報
処理を表わしている。造形が開始されると、先ずステッ
プＳ１にて、上述の測定系からデータをサンプリング
し、ステップＳ２にてサンプリングデータにＡ／Ｄ変換
を施す。次にステップＳ３では、造形開始から所定時間
(例えば１時間)が経過したかどうかによって、造形が終
了したかどうかが判断され、イエスの場合は手続きを終
了する。造形が未だ終了していないときは、ステップＳ
４に移行して、デジタル化された測定データを所定単位
(ｌ／ｓ、℃、ｍＷ等)のデータに換算する。FIG. 2 shows information processing executed by the information processing apparatus (6). When modeling is started, first, in step S1, data is sampled from the above-described measurement system, and in step S2, A / D conversion is performed on the sampled data. Next, in step S3, a predetermined time from the start of modeling
It is determined whether or not the modeling is completed based on whether (for example, one hour) has elapsed, and if yes, the procedure is terminated. If modeling has not been completed yet, step S
Move to 4 and convert the digitized measurement data to the specified unit
(l / s, ° C, mW, etc.).
【００２０】その後、ステップＳ５では、換算された測
定データに含まれるノイズを除去するべく、測定データ
に移動平均処理を施し、更に、これによって得られたデ
ータに必要な演算処理を施して、運転監視データを作成
する。例えば、レーザ内部出力Ｗtとレーザ液面出力Ｗs
から、下記数１に従ってレーザ効率Ｅfを算出する。Thereafter, in step S5, a moving average process is performed on the measured data in order to remove noise included in the converted measured data, and further, a necessary arithmetic process is performed on the data obtained thereby, and the operation is performed. Create monitoring data. For example, the laser internal output Wt and the laser liquid level output Ws
Then, the laser efficiency Ef is calculated according to the following equation (1).
【００２１】[0021]
【数１】Ｅf＝Ｗs／Ｗt## EQU1 ## Ef = Ws / Wt
【００２２】続いて、ステップＳ６にて、運転監視デー
タが危険な値を示しているかどうかを判断し、イエスの
ときはディスプレイにその旨の警告を表示する。例えば
図３に示す如く、先ずステップＳ１１にてレーザ効率Ｅ
fが０.４よりも小さいかどうかを判断する。ここで、イ
エスのときは、プロジェクターを構成するレンズに塵埃
が付着していることが考えられるので、ステップＳ１２
にてレンズの清掃、交換を要請する。次にステップＳ１
３では、光硬化性樹脂の液面位Ｌrの絶対値が０.１mmを
越えたかどうかを判断する。ここで、イエスのときは、
例えば光硬化性樹脂の硬化時に樹脂中に空気が混入した
り、硬化した樹脂のエッジが盛り上がる現象(中海)が発
生して、造形が失敗する虞れがあるので、ステップＳ１
４にてその旨を指摘する。Subsequently, in step S6, it is determined whether or not the operation monitoring data indicates a dangerous value. If the result is YES, a warning to that effect is displayed on the display. For example, as shown in FIG.
It is determined whether f is smaller than 0.4. Here, when the answer is YES, it is considered that dust is attached to the lens constituting the projector.
Request lens cleaning and replacement at. Next, step S1
At 3, it is determined whether or not the absolute value of the liquid level Lr of the photocurable resin has exceeded 0.1 mm. Here, in the case of Jesus,
For example, there is a possibility that air may enter the resin during curing of the photocurable resin, or a phenomenon that the edge of the cured resin bulges (Nakaumi) may occur, and modeling may fail.
This is pointed out in 4.
【００２３】続いてステップＳ１５では、二次側冷却水
出口温度Ｔc4が６０℃を越えているかどうかを判断す
る。ここで、イエスのときは、例えば一次側冷却水(水
道水)の汚れや冷却水フィルターの目詰り等によって、
装置本体(10)の冷却が不十分となっているので、ステッ
プＳ１６にてその旨の警告を表示する。更にステップＳ
１７では、レーザ液面出力Ｗsが１２０ｍＷを下回った
かどうかを判断する。ここで、イエスのときは、造形物
の精度や品質に問題が生じるので、ステップＳ１８にて
レーザ出力を増大させる様に要請する。Subsequently, in step S15, it is determined whether or not the secondary cooling water outlet temperature Tc4 exceeds 60 ° C. Here, if yes, for example, due to contamination of the primary side cooling water (tap water) or clogging of the cooling water filter, etc.
Since the cooling of the apparatus main body (10) is insufficient, a warning to that effect is displayed in step S16. Step S
At 17, it is determined whether the laser liquid level output Ws has fallen below 120 mW. Here, if the answer is yes, there is a problem in the accuracy and quality of the modeled object. Therefore, it is requested in step S18 to increase the laser output.
【００２４】その後、図２のステップＳ７に移行し、前
記ディッパー動作信号Ｓに基づいて、ディッパーが上昇
したかどうかを判断することによって、１層分の造形が
終了したかどうかを判断し、ノーのときは、ステップＳ
１に戻って同様の処理を繰り返す。ステップＳ７にてイ
エスと判断されたときは、ステップＳ８に移行して、運
転監視データをファイルに出力し、更にステップＳ９で
は、運転監視データをディスプレイに表示する。Thereafter, the flow shifts to step S7 in FIG. 2 to determine whether or not the dipper has risen based on the dipper operation signal S, thereby determining whether or not the modeling of one layer has been completed. If, step S
Returning to step 1, the same processing is repeated. When the determination is YES in step S7, the process proceeds to step S8, where the operation monitoring data is output to a file, and in step S9, the operation monitoring data is displayed on a display.
【００２５】この結果、ディスプレイには、例えば図４
(ａ)(ｂ)(ｃ)に示す如く、レーザ内部電流Ａt、レーザ
内部出力Ｗt、レーザ液面出力Ｗs、レーザ効率Ｅf、造
形所要時間(図示省略)等が、光硬化性樹脂の積層毎の時
系列運転監視データとして、トレンド表示される。As a result, for example, the display shown in FIG.
(a) As shown in (b) and (c), the laser internal current At, laser internal output Wt, laser liquid level output Ws, laser efficiency Ef, modeling time (not shown), etc. Is displayed as a trend as time-series operation monitoring data.
【００２６】従って、オペレータは、情報処理装置(６)
のディスプレイ(61)に表示される系列運転監視データに
基づいて、造形物の精度や品質に悪影響を及ぼす因子を
分析することが可能であり、それによって、装置の運転
状態の的確な把握、造形不良の予知、更には保守点検を
行なうべき時期の予測が可能となる。又、造形の所要時
間から、造形物の積層ピッチのバラツキを検知すること
が出来る。更に、情報処理装置(６)のディスプレイ(61)
に表示される警報によって、運転状態の悪化を的確に知
ることが出来、迅速な対処が可能である。Therefore, the operator operates the information processing device (6).
Based on the series operation monitoring data displayed on the display (61), it is possible to analyze the factors that have an adverse effect on the accuracy and quality of the modeled object, thereby accurately grasping the operation state of the device, It is possible to predict a failure and predict a time when maintenance and inspection should be performed. In addition, it is possible to detect a variation in the lamination pitch of the modeled object from the time required for modeling. Further, the display (61) of the information processing device (6)
, The deterioration of the driving condition can be accurately known, and prompt measures can be taken.
【００２７】図５は、社内(86)に設置された上述の装置
本体(10)とモニタリングシステム(８)をＬＡＮ(81)に接
続し、ＬＡＮ(81)からアクセスサーバー(82)を経て、社
外(87)のパーソナルコンピュータ(84)へ運転監視データ
を送信するためのリモート監視システムを表わしてい
る。アクセスサーバー(82)及びパーソナルコンピュータ
(84)には夫々モデム(83)(85)が接続されており、両モデ
ム(83)(85)が電話回線(88)によって互いに接続される。FIG. 5 shows that the above-mentioned apparatus body (10) installed in the company (86) and the monitoring system (8) are connected to the LAN (81), and from the LAN (81) via the access server (82). It shows a remote monitoring system for transmitting operation monitoring data to a personal computer (84) outside the company (87). Access server (82) and personal computer
Modems (83) and (85) are connected to (84), respectively, and both modems (83) and (85) are connected to each other by a telephone line (88).
【００２８】上記リモート監視システムにおいて、社外
(87)のパーソナルコンピュータ(84)は、図６に示す如
く、先ずステップＳ２１にて、アクセスサーバーとの接
続を確立し、更にステップＳ２２では、モニタリングシ
ステムとの接続を確立する。次にステップＳ２３にて、
運転監視データの閲覧を行なう。その後、ステップＳ２
４にて、モニタリングシステムとの接続を解除し、更に
ステップＳ２５では、アクセスサーバーとの接続を解除
する。In the above remote monitoring system, the outside
As shown in FIG. 6, the personal computer (84) of (87) first establishes a connection with the access server in step S21, and further establishes a connection with the monitoring system in step S22. Next, in step S23,
View operation monitoring data. Then, step S2
At 4, the connection to the monitoring system is released, and at step S25, the connection to the access server is released.
【００２９】上記リモート監視システムによれば、光造
形装置の運転管理者等が在宅状態で、光造形装置の運転
状態を監視することが出来るので、特に長時間に亘る光
造形において有効である。According to the remote monitoring system, since the operation manager of the optical shaping apparatus can monitor the operation state of the optical shaping apparatus at home, it is effective particularly in the optical shaping for a long time.
【図１】本発明に係る光造形装置のモニタリングシステ
ムの構成を表わすブロック図である。FIG. 1 is a block diagram illustrating a configuration of a monitoring system for an optical shaping apparatus according to the present invention.
【図２】モニタリングシステムにおけるデータ処理を表
わすフローチャートである。FIG. 2 is a flowchart showing data processing in the monitoring system.
【図３】警告表示のための処理を表わすフローチャート
である。FIG. 3 is a flowchart illustrating a process for displaying a warning.
【図４】ディスプレイに表示されるトレンドグラフであ
る。FIG. 4 is a trend graph displayed on a display.
【図５】本発明に係るモニタリングシステムを応用した
リモート監視システムのブロック図である。FIG. 5 is a block diagram of a remote monitoring system to which the monitoring system according to the present invention is applied.
【図６】リモート監視システムにおけるパーソナルコン
ピュータの処理を表わすフローチャートである。FIG. 6 is a flowchart illustrating processing of a personal computer in the remote monitoring system.
【図７】樹脂槽内の機構及びその動作を表わす断面図で
ある。FIG. 7 is a cross-sectional view illustrating a mechanism in a resin tank and its operation.
【図８】従来の光造形装置の構成を表わす図である。FIG. 8 is a diagram illustrating a configuration of a conventional stereolithography apparatus.
(１) 光造形装置 (10) 装置本体 (11) 冷却装置 (２) 樹脂槽 (３) 駆動機構 (４) プロジェクター (６) 情報処理装置 (1) Stereolithography device (10) Device body (11) Cooling device (2) Resin tank (3) Drive mechanism (4) Projector (6) Information processing device
Claims (4)
降テーブル(21)を配置し、光硬化性樹脂(90)の液面に対
してレーザ光による走査を施すことにより、昇降テーブ
ル(21)上の樹脂層を硬化させつつ積層し、所定形状の立
体造形物(９)を成形する光造形装置において、装置本体
(10)には、運転状態を表わす各種のデータを測定するた
め測定系が配備され、該測定系から得られる測定データ
は、情報処理装置に供給して、必要な処理を施した上、
樹脂(90)の積層毎の時系列運転監視データとして記録す
ることを特徴とする光造形装置のモニタリングシステ
ム。An elevation table (21) is arranged in a photo-curable resin (90) in a resin tank (2), and the liquid surface of the photo-curable resin (90) is scanned by a laser beam. In the stereolithography apparatus for forming a three-dimensional object (9) having a predetermined shape by curing and stacking the resin layer on the elevating table (21),
(10) is provided with a measurement system for measuring various data representing the operating state, measurement data obtained from the measurement system is supplied to the information processing device, after performing necessary processing,
A monitoring system for an optical shaping apparatus, which records as time-series operation monitoring data for each layer of the resin (90).
運転状態の悪化を判断する判断手段と、判断手段によっ
て運転状態の悪化が検知されたとき、警報を発するため
の出力装置とを具えている請求項１に記載のモニタリン
グシステム。2. An information processing apparatus comprising: a judging means for judging a deterioration of an operating condition based on measurement data; and an output device for issuing an alarm when the judging device detects the deterioration of the driving condition. The monitoring system according to claim 1.
出力と光硬化性樹脂(90)の液面位における出力を測定す
るための出力計と、光硬化性樹脂(90)の液面位の変動を
測定するための液面計と、装置本体(10)を冷却するため
の冷却水の出口温度を測定するための温度計とが含まれ
ている請求項２に記載のモニタリングシステム。3. A measuring system comprising: a power meter for measuring an output at a laser beam emitting portion and an output at a liquid level of the photocurable resin (90); and a liquid level of the photocurable resin (90). The monitoring system according to claim 2, further comprising a liquid level gauge for measuring a change in position, and a thermometer for measuring an outlet temperature of cooling water for cooling the apparatus body (10).
出射部における出力に対する樹脂液面位における出力の
比率が所定の閾値を下回ったかどうかを判断する第１判
断部と、光硬化性樹脂(90)の液面位の変動量が所定の閾
値を上回ったかどうかを判断する第２判断部と、冷却水
の出口温度が所定の閾値を上回ったかどうかを判断する
第３判断部と、樹脂液面位におけるレーザ光の出力が所
定の閾値を下回ったかどうかを判断する第４判断部とを
有し、何れかの判断部によって異常が判断されたとき、
出力装置によって警報が発せられる請求項３に記載のモ
ニタリングシステム。4. A first judging section for judging whether or not a ratio of an output at a resin liquid level to an output at a laser beam emitting section has fallen below a predetermined threshold value; A second determining unit for determining whether the amount of change in the liquid level of (90) has exceeded a predetermined threshold, a third determining unit for determining whether the outlet temperature of the cooling water has exceeded a predetermined threshold, A fourth determining unit that determines whether the output of the laser light at the liquid level is below a predetermined threshold, and when any of the determining units determines an abnormality,
The monitoring system according to claim 3, wherein an alarm is issued by the output device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10059537A JPH11254542A (en) | 1998-03-11 | 1998-03-11 | Monitoring system for stereo lithographic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10059537A JPH11254542A (en) | 1998-03-11 | 1998-03-11 | Monitoring system for stereo lithographic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11254542A true JPH11254542A (en) | 1999-09-21 |
Family
ID=13116128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10059537A Pending JPH11254542A (en) | 1998-03-11 | 1998-03-11 | Monitoring system for stereo lithographic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11254542A (en) |
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