JP2693022B2 - NC machine tool control method - Google Patents
NC machine tool control methodInfo
- Publication number
- JP2693022B2 JP2693022B2 JP20150890A JP20150890A JP2693022B2 JP 2693022 B2 JP2693022 B2 JP 2693022B2 JP 20150890 A JP20150890 A JP 20150890A JP 20150890 A JP20150890 A JP 20150890A JP 2693022 B2 JP2693022 B2 JP 2693022B2
- Authority
- JP
- Japan
- Prior art keywords
- work
- machining
- machine tool
- workpieces
- allowable limit
- 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
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- Machine Tool Sensing Apparatuses (AREA)
- Numerical Control (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、NC工作機械において加工の準備段階の一つ
として行われるワークテーブル上のイケールに取付けら
れたワークの取付け精度の確認作業を含むワークの処理
手順の制御方法の改善に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention includes a work of confirming the mounting accuracy of a workpiece mounted on an ikele on a workpiece table, which is performed as one of the preparatory steps for machining in an NC machine tool. The present invention relates to improvement of a control method of a work processing procedure.
通常、NC工作機械でワークの加工を行う前には、パレ
ット上にセットされたイケールの各面にワークを所定の
精度で位置決め・固定する段取り作業が行われる。そし
て、加工の直前に、パレットがワークテーブル上に載せ
られた際に、工作機械の主軸に測定治具を取付け、ワー
クの取付け精度のチェックを行い（これを“通り”の測
定と称する）、許容範囲以上に位置がずれている場合に
は、加工を中止したり、取付けを修正したりしている。Usually, before machining a work with an NC machine tool, a setup work is performed to position and fix the work on each surface of the scale set on the pallet with a predetermined accuracy. Immediately before machining, when the pallet was placed on the work table, a measurement jig was attached to the spindle of the machine tool and the work attachment accuracy was checked (this is referred to as "street" measurement). If the position is out of the allowable range, the machining is stopped or the mounting is corrected.
従来からこの“通り”の測定は、イケールの各面のワ
ークについて、そのワークが加工される直前に行われて
いる。従って、複数の取付け面を有するイケールの場
合、未加工のワークの精度計測箇所に、先に行われた加
工によって他ワークから排出された切削屑や切削液が付
着して、通りの測定データに誤りが生じる恐れがあっ
た。勿論、測定の前にワークのクリーニングを行うがそ
の作業は中々面倒であると共に、完全な清掃は期待でき
ず、その結果、ワークが正しく取付けられているにもか
かわらず、付着した異物のために通り不良と判定される
ものも多く、工作機械の稼働率を低下させる原因の一つ
にもなっている。Conventionally, this “street” measurement is performed on the work on each surface of the ikele immediately before the work is processed. Therefore, in the case of an ikele with multiple mounting surfaces, cutting waste and cutting fluid discharged from other workpieces due to the previous machining will adhere to the accuracy measurement point of the unmachined workpiece, and There was a risk of making mistakes. Of course, the work is cleaned before the measurement, but the work is rather troublesome, and complete cleaning cannot be expected, and as a result, due to the adhered foreign matter even if the work is correctly mounted. Many are judged to be defective, which is one of the causes of lowering the operating rate of machine tools.
本発明は、このような従来技術における問題点を解決
し、通りの測定を正確に行い、且つその結果と周囲の状
況に応じてワークを如何に処理するかを適確に判断し、
以て機械の稼働率を向上させる方法を提供することを目
的とする。The present invention solves the above problems in the prior art, accurately performs street measurement, and appropriately determines how to process a work according to the result and surrounding conditions,
Thus, it is an object of the present invention to provide a method of improving the operating rate of a machine.
この目的は、ワーク取付け精度計測機能を有するNC工
作機械において、該NC工作機械のワークテーブル上のイ
ケールに取付けられた複数のワークの取付け精度を、第
１加工順位のワークの加工開始前に一括して計測し、前
記各ワークの加工開始前に前記計測結果と所定の許容限
界とを比較し、該許容限界内にある場合にはそのまま加
工を実行し、前記許容限界を外れている場合には所定の
対策処理を行うように制御することを特徴とするNC工作
機械の制御方法によって達成される。The purpose of this is, in an NC machine tool having a work attachment accuracy measurement function, the attachment accuracy of a plurality of workpieces attached to the scale on the work table of the NC machine tool is collectively measured before the machining of the workpieces in the first machining order is started. Then, the measurement result is compared with a predetermined allowable limit before the machining of each work is started. If the measured result is within the allowable limit, the machining is executed as it is, and if the allowable limit is exceeded, Is achieved by a control method for an NC machine tool, which is characterized by controlling so as to perform a predetermined countermeasure process.
そして、前記所定の対策処理は、有人時間帯において
は警報を発してワークの取付け不良をオペレータに通報
し、無人時間帯においては当該ワークの加工をスキップ
するようにすることが望ましい。In the predetermined countermeasure process, it is desirable that an alarm be issued during a manned time zone to notify the operator of a work attachment failure, and the machining of the work is skipped during an unmanned time zone.
従来の“通り”測定は各ワーク毎に加工開始の直前に
行われていたが、本発明においてはワークテーブル上の
すべてのワークが未加工状態で切り屑や切削液で汚染さ
れていない間に通りの測定が行われ、そのデータを適宜
なメモリに記憶しておく。そして、各ワークが加工され
る直前に、当該ワークについての測定データが読み出さ
れて所定の許容限界と比較され、ワーク取付けの良否が
決定される。Conventional “pass” measurement is performed for each work immediately before the start of machining, but in the present invention, while all the works on the work table are in the unprocessed state and are not contaminated with chips or cutting fluid. The measurement is performed as described above, and the data is stored in an appropriate memory. Immediately before each work is processed, the measurement data of the work is read and compared with a predetermined allowable limit to determine whether the work is attached or not.
ワーク取付けが良好と判断された場合には、直ちにワ
ークの加工が行われる。しかし、不良と判断された場合
には、その時の周囲の状況に応じて二つの選択肢のいず
れかが選ばれる。If it is determined that the work is attached properly, the work is immediately processed. However, if it is determined to be defective, one of the two options is selected depending on the surrounding situation at that time.
即ち、オペレータが存在している有人時間帯において
は、警報を発してワークの取付けが不良であることを担
当のオペレータに通報する。これによってオペレータは
ワークの取付け状態を再度チェックし、簡単に修正が可
能な場合には取付け位置の修正の後に、加工を実行させ
る。しかし、簡単には修正が不可能と判断した場合に
は、加工を中止して次のワークの処理にスキップさせ
る。That is, in the manned time zone in which the operator is present, an alarm is issued to inform the operator in charge that the work is not properly attached. As a result, the operator checks the mounting state of the work again and, if it can be easily corrected, corrects the mounting position and then executes the machining. However, when it is determined that the correction cannot be easily performed, the machining is stopped and the process of the next work is skipped.
一方、深夜等のオペレータが不在の無人時間帯におい
ては、警報を発することなく直ちに次のワークの処理を
行うように手順をスキップさせる。On the other hand, in the unmanned time zone when the operator is absent, such as at midnight, the procedure is skipped so that the next work is immediately processed without issuing an alarm.
本発明によれば、各ワークについて正確な通りの測定
が可能となって異物の付着による測定の誤りが解消する
のみならず、オペレータの判断を有効に介入させること
によって、工作機械の稼働率を向上することが可能とな
る。According to the present invention, not only is it possible to perform accurate measurement for each workpiece and the error in measurement due to the adhesion of foreign matter is eliminated, but the operator's judgment can be effectively intervened to improve the operating rate of the machine tool. It is possible to improve.
以下、図面に示す好適実施例に基づいて、本発明を更
に詳細に説明する。Hereinafter, the present invention will be described in more detail based on preferred embodiments shown in the drawings.
第１図は、本発明方法を適用されるNC工作機械の構成
の一例を示すブロック図であり、工作機械本体１と、NC
装置２と、これら両者の間に介在するメモリを具えた機
械制御装置３とからなる。FIG. 1 is a block diagram showing an example of the configuration of an NC machine tool to which the method of the present invention is applied.
It comprises a device 2 and a machine controller 3 with a memory interposed between them.
第２図は、加工のためにこのNC工作機械の前面のワー
クテーブル７上のパレット４にワークをセットした状態
を示す。この例では、４個のワークn1,n2,n3,n4がパレ
ット４上に搭載されたイケール５の四つの取付け面に公
知のやり方で位置決め・固定されている。前述のよう
に、これらのワークn1,n2,n3,n4は、工作機械の主軸に
取付けられた計測治具６によって、第１加工順位のワー
クn1の加工の開始前にその取付け精度（通り）を一括し
て測定される。FIG. 2 shows a state in which the work is set on the pallet 4 on the work table 7 on the front surface of the NC machine tool for machining. In this example, four works n 1 , n 2 , n 3 and n 4 are positioned and fixed in a known manner on the four mounting surfaces of the scale 5 mounted on the pallet 4. As described above, these workpieces n 1 , n 2 , n 3 , n 4 are processed by the measuring jig 6 attached to the spindle of the machine tool before the machining of the workpiece n 1 in the first machining order is started. Installation accuracy (passage) is measured collectively.
第３図は、本発明によるワークの処理手順の制御方法
を実行するための流れ図を示す。FIG. 3 shows a flow chart for executing the method for controlling the processing procedure of the work according to the present invention.
本発明によれば、第１の手順として、先ずワークn1,n
2,n3,n4を搭載したパレット４をワークテーブル７上に
セットし、各ワーク毎に順次に加工位置に位置決めし
て、工作機械に取付けた計測治具６によって、その取付
け精度を測定する。その測定結果は、工作機械に付属す
る前記機械制御装置３内のメモリに記憶される。According to the present invention, as the first procedure, first, the workpieces n 1 , n
Set the pallet 4 equipped with 2 , n 3 and n 4 on the work table 7, position each work in sequence at the machining position, and measure its mounting accuracy by the measuring jig 6 mounted on the machine tool. To do. The measurement result is stored in the memory in the machine control device 3 attached to the machine tool.
イケール５上のすべてのワークについて取付け精度の
測定が終了すると、次の手順として、NC装置２から第１
のワークn1の加工プログラムが機械制御装置３に呼び込
まれる。機械制御装置３はこの加工プログラムに規定さ
れているワークの取付け精度の許容限界と前記測定結果
とを比較する。そして取付け精度が限界内に入っている
場合には、ワークn1についての加工が開始される。When the measurement of the mounting accuracy is completed for all the workpieces on the scale 5, the next procedure is from the NC device 2 to the first.
The machining program for the workpiece n 1 is called up by the machine controller 3. The machine control device 3 compares the allowable limit of the mounting accuracy of the work specified in the machining program with the measurement result. Then, if the mounting accuracy is within the limit, the machining of the work n 1 is started.
加工が終了すると、次のワークn2についての加工プロ
グラムが呼び込まれ、ワークn1の場合と同じく取付け精
度の測定結果が加工プログラム内に規定されている許容
限界と比較され、限界内であれば加工が開始される。以
下同様にして最後のワークn4の加工が終了すると全作業
が完了する。When the machining is completed, the machining program for the next workpiece n 2 is called in, and the measurement result of the mounting accuracy is compared with the allowable limit specified in the machining program as in the case of workpiece n 1 , and if it is within the limits, If the processing is started. In the same manner, when the final machining of the work n 4 is completed, all the work is completed.
しかし、いずれかのワークにおいて、その取付け精度
の測定結果と許容限界との比較の際に、取付け不良と判
断された場合には、その時点の環境条件に応じて次の二
つの選択肢が設定されている。However, when it is judged that the mounting accuracy of one of the workpieces is incorrect when the mounting accuracy measurement result is compared with the allowable limit, the following two options are set according to the environmental conditions at that time. ing.
即ち、オペレータが勤務している有人時間帯の場合に
は、直ちに工作機械に付属している警告ランプ８等を点
灯してオペレータにワークの取付け不良の発生を通報す
る。これによってオペレータは現場に急行し、自ら取付
け不良の状態を確認する。その結果、簡単に取付けの修
正が可能であれば、修正後に加工の続行をマニュアル指
令する。しかし、簡単には修正不可能と判断された場合
には、このワークについての加工を中止し、次のワーク
の処理手順にスキップするようにマニュアル指令する。
一方、深夜等の無人時間帯において、は、オペレータの
判断を待つことができないので、当該ワークについては
直ちに加工を中止して次のワークの処理手順にスキップ
するように自動的に指令が発せられる。この制御手順を
流れ図にまとめると第３図のようになる。That is, in the manned time zone in which the operator is working, the warning lamp 8 or the like attached to the machine tool is immediately turned on to notify the operator of the occurrence of work attachment failure. As a result, the operator rushes to the site and confirms the defective mounting state by himself. As a result, if it is possible to easily correct the attachment, manually instruct to continue the machining after the correction. However, if it is determined that the work cannot be easily corrected, the machining of this work is stopped and a manual command is issued to skip to the processing procedure of the next work.
On the other hand, during unmanned hours such as midnight, it is not possible to wait for the operator's judgment. Therefore, a command is automatically issued to immediately stop machining of the work and skip to the processing procedure of the next work. . This control procedure is summarized in the flow chart as shown in FIG.
なお、ワークの取付け精度の許容限界との比較は、取
付け精度を計測した直後に、イケールに取付けられてい
る全ワークについて一括して行ってもよい。It should be noted that the comparison with the allowable limit of the mounting accuracy of the work may be performed collectively for all the works mounted on the scale immediately after measuring the mounting accuracy.
以上は、１台のNC工作機械が内部に加工プログラムを
内蔵している場合についての説明であったが、本発明は
これに限定されるものではなく、複数台のNC工作機械を
共通のホストコンピュータで管理するDNCシステム等の
場合にも同じように適用可能である。この場合、取付け
精度の計測結果の記憶や許容限界値との比較等は、ホス
トコンピュータで行われる。The above is a description of the case where one NC machine tool has a machining program built therein, but the present invention is not limited to this, and a plurality of NC machine tools can be shared by a common host. The same can be applied to a computer-controlled DNC system or the like. In this case, the storage of the measurement result of the mounting accuracy and the comparison with the allowable limit value are performed by the host computer.
本発明によれば、同一イケール上の複数のワークにつ
いて、加工開始前に一括してその取付け精度を測定する
ので、測定面への異物の付着による測定誤差が減少し、
従って取付け精度不良と判断される確率が激減する。According to the present invention, for a plurality of workpieces on the same scale, the mounting accuracy is collectively measured before the start of processing, so that the measurement error due to the adhesion of foreign matter to the measurement surface is reduced,
Therefore, the probability that the mounting accuracy is judged to be poor is drastically reduced.
又、取付け不良と判断されたワークの処置を、有人時
間体と無人時間帯とで変え、オペレータを有効に介在さ
せることによって、取付け不良のワークを可能な限り救
済するようにしたので、機械の稼働率を向上させること
ができる。In addition, the work of a work that is determined to be improperly mounted is changed between a manned time unit and an unmanned time zone, and an operator is effectively intervened to relieve a work that is improperly mounted. The operating rate can be improved.
第１図は、本発明方法を適用されるNC工作機械の構成の
一例を示すブロック図、 第２図は、通りの測定の際にNC工作機械の前面）にセッ
トされたワークを示す斜視図、 第３図は、本発明によるワークの処理手順の制御方法を
実行するための流れ図である。 １……工作機械本体、 ２……NC装置、 ３……機械制御装置、 ４……パレット、 ５……イケール、 ６……計測治具、 ７……ワークテーブル、 ８……警告ランプ、 n1,n2,n3,n4……ワーク。FIG. 1 is a block diagram showing an example of the configuration of an NC machine tool to which the method of the present invention is applied, and FIG. 2 is a perspective view showing a work set on the front surface of the NC machine tool at the time of street measurement. FIG. 3 is a flow chart for executing the method for controlling the processing procedure of the work according to the present invention. 1 ... Machine tool main body, 2 ... NC device, 3 ... Machine control device, 4 ... Pallet, 5 ... Scale, 6 ... Measuring jig, 7 ... Work table, 8 ... Warning lamp, n 1 , n 2 , n 3 , n 4 …… Work.
Claims (2)
機械において、該NC工作機械のワークテーブル上のイケ
ールに取付けられた複数のワークの取付け精度を、第１
加工順位のワークの加工開始前に一括して計測し、前記
各ワークの加工開始前に前記計測結果と所定の許容限界
とを比較し、該許容限界内にある場合にはそのまま加工
を実行し、前記許容限界を外れている場合には所定の対
策処理を行うように制御することを特徴とするNC工作機
械の制御方法。1. In an NC machine tool having a work attachment accuracy measuring function, a first embodiment is provided for determining the attachment accuracy of a plurality of workpieces attached to the scale on a work table of the NC machine tool.
The workpieces in the machining order are collectively measured before the machining is started, the measurement result is compared with a predetermined allowable limit before the machining of each of the workpieces is started, and if it is within the allowable limit, the machining is executed as it is. A method for controlling an NC machine tool, wherein control is performed so that a predetermined countermeasure process is performed when the allowable limit is exceeded.
ては警報を発してワークの取付け不良をオペレータに通
報し、無人時間帯においては当該ワークの加工をスキッ
プすることを特徴とする請求項１に記載のNC工作機械の
制御方法。2. The predetermined countermeasure processing is characterized in that an alarm is issued during a manned time zone to notify an operator of a defective work attachment, and the machining of the work is skipped during an unmanned time zone. 1. A method for controlling an NC machine tool according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20150890A JP2693022B2 (en) | 1990-07-31 | 1990-07-31 | NC machine tool control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20150890A JP2693022B2 (en) | 1990-07-31 | 1990-07-31 | NC machine tool control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0487753A JPH0487753A (en) | 1992-03-19 |
| JP2693022B2 true JP2693022B2 (en) | 1997-12-17 |
Family
ID=16442213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20150890A Expired - Lifetime JP2693022B2 (en) | 1990-07-31 | 1990-07-31 | NC machine tool control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2693022B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011233001A (en) * | 2010-04-28 | 2011-11-17 | Brother Ind Ltd | Numerical control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005253563A (en) * | 2004-03-10 | 2005-09-22 | Takao:Kk | Game machine |
| JP2006334009A (en) * | 2005-05-31 | 2006-12-14 | Samii Kk | Pinball game machine |
| JP2007111105A (en) * | 2005-10-18 | 2007-05-10 | Heiwa Corp | Game machine |
| JP4976720B2 (en) * | 2006-03-29 | 2012-07-18 | Ｊｃｍシステムズ株式会社 | History information server |
| JP2009119050A (en) * | 2007-11-15 | 2009-06-04 | Okumura Yu-Ki Co Ltd | Pachinko game machine |
| JP4903168B2 (en) * | 2008-01-22 | 2012-03-28 | タイヨーエレック株式会社 | Bullet ball machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPH0487753A (en) | 1992-03-19 |
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