JPS6244357A - Tool life control system for numerically controlled device - Google Patents

Tool life control system for numerically controlled device

Info

Publication number
JPS6244357A
JPS6244357A JP18293285A JP18293285A JPS6244357A JP S6244357 A JPS6244357 A JP S6244357A JP 18293285 A JP18293285 A JP 18293285A JP 18293285 A JP18293285 A JP 18293285A JP S6244357 A JPS6244357 A JP S6244357A
Authority
JP
Japan
Prior art keywords
tool
command
spare
tool life
tools
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
Application number
JP18293285A
Other languages
Japanese (ja)
Inventor
Masatoshi Ito
正敏 伊藤
Kazuhiro Kudo
工藤 和弘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP18293285A priority Critical patent/JPS6244357A/en
Publication of JPS6244357A publication Critical patent/JPS6244357A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/18Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/406Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
    • G05B19/4065Monitoring tool breakage, life or condition

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
  • Numerical Control (AREA)

Abstract

PURPOSE:To make tool life control at an optional machining process checkable as well as to aim at the prevention of operation interruption at an alarm in the machining midway, by making a spare tool check in a tool life control function so as to perform a command being set as a parameter in advance. CONSTITUTION:When spare tools still exist amount the group GR given a T command, they operate as in the past, but when the tool life of all tools in the group GR expires or they are broken, no alarm works at the T command, and such one that is the shortest in use time USED is selected among these life expiring tools whereby machining continues. And, when a spare tool check command M999 being set as a parameter in advance is performed, a spare tool check on all groups in a tool life control table B is carried out, and when there are no spare tools even one, the alarm is emitted. Therefore, if the spare tool check command M set to the parameter as the M999 aforesaid is performed at the time of a good place to leave off in the machining process, operation is no longer interrupted in the point midway in machining by the alarm.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、例えばマシニングセンタなど多数の工具を
搭載した工作機械用数値制御装置の使用可能工具の自動
選択を行うNC装置の工具寿命管理方式に関するもので
ある。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a tool life management method for an NC device that automatically selects usable tools for a numerical control device for a machine tool equipped with a large number of tools, such as a machining center. It is something.

〔従来の技術〕[Conventional technology]

従来のこの種NC装置の工具寿命管理方式として第2図
に示すものがあった。同図Aは工具寿命管理機能の概略
フローチャート、BはNC装置メモリ内の工具寿命管理
テーブルの一例である。また、B図においてステータス
STは未使用がrOJ、使用中が「1」、寿命工具が「
2」、破損等の異常発生工具が「3」で夫々の工具の状
態ヲ表わしている。
A conventional tool life management system for this type of NC device is shown in FIG. 2. In the figure, A is a schematic flowchart of the tool life management function, and B is an example of a tool life management table in the NC device memory. In addition, in Figure B, the status ST is rOJ when unused, "1" when used, and "1" when the tool has a lifespan.
"2" indicates the tool in which an abnormality such as damage has occurred, and "3" indicates the condition of each tool.

次に動作について説明する。まず、NC@#tより5T
−1で工具指令(T指令)が与えられると工具寿命管理
テーブルBの中から指令された工具の該当するグループ
GRを選出し、その中で使用可能な工具をそのステータ
スSTナンバーで判別する(ST−2)ことにより工具
番号Tを出力している。かくして、出力された丁番号の
工具が主軸に取り付けられ切削送り(ST−3)が行わ
れると、切削に使用された時間USEDをカウントしく
5T−4)、予め設定しである寿命時間LIFEを超え
るとステータスSTを寿命12″として登録し、次回か
らこの工具は選択しないようにし同一グループの別の工
具が選択される。
Next, the operation will be explained. First, 5T from NC@#t
When a tool command (T command) is given in -1, the group GR to which the commanded tool corresponds is selected from the tool life management table B, and the usable tools among them are determined by their status ST numbers ( ST-2) The tool number T is output. In this way, when the tool with the output hinge number is attached to the spindle and cutting feed (ST-3) is performed, the time used for cutting is counted (5T-4), and the preset life time LIFE is calculated. If it exceeds, the status ST is registered as life 12'', and this tool will not be selected next time, and another tool in the same group will be selected.

例えば、T=1(グループGR@1″)というT指令が
与えられた場合には工具寿命管理テーブルBより、T=
11の工具を選択して使用し、次にT=2というT指令
の場合にはグループGR”2”の工具は全てステータス
STが寿命に達し念か、破損したことを表しているので
、NC装置はアラームを発生し、運転を停止する。
For example, when the T command T=1 (group GR@1″) is given, from the tool life management table B, T=
11 tools are selected and used, and then in the case of a T command of T = 2, the status ST of all the tools in group GR "2" indicates that they have reached the end of their service life or are damaged, so NC is performed. The device generates an alarm and stops operation.

以上の様な動作をすることにより、工具の寿命を全く心
配することなく、無人で長時間の加工ができる。
By performing the above-mentioned operations, unattended machining can be performed for long periods of time without worrying about tool life.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

従来のNC装置の工具寿命管理方式は以上のようになさ
れているので、加ニブログラムの途中でアラームが発生
することもあり、その場合には機械の運転がその場で停
止してしまうため、加工物が途中まで加工された状態で
長時間放置されるという問題点があった。
The tool life management method of conventional NC equipment is performed as described above, so an alarm may occur during the cutting program, and in that case, the machine operation will stop on the spot. There was a problem in that objects were left partially processed for a long time.

また、このような状態で放置されると、長時間の間に加
工物が熱変形するため、アラームが発生した寿命工具で
加工する場合よりも加工精度が悪化するという問題点が
あった。
Furthermore, if the workpiece is left in such a state, the workpiece will be thermally deformed over a long period of time, resulting in a problem that the machining accuracy will be worse than when machining is performed using a tool with a limited lifespan that has generated an alarm.

この発明は上記のような問題点全解消するためになされ
たもので、加ニブログラムの任意の位置に予めパラメー
タとして定めておいた指令を実行することにより、その
指令時にのみ、予備工具が無い場合のアラームを発生し
、ユーザが加ニブログラムの任意の位置で予備工具のチ
ェックが行えるNC装置の工具寿命管理方式を得ること
を目的とする。
This invention was made to solve all of the above-mentioned problems, and by executing a command set in advance as a parameter at an arbitrary position in the cannibal program, only at the time of the command, when there is no spare tool, An object of the present invention is to obtain a tool life management system for an NC device that generates an alarm and allows a user to check spare tools at any position in a cannibal program.

〔問題点を解決するための手段〕[Means for solving problems]

この発明に係るNC装置の工具寿命管理方式は、工具寿
命管理機能の予備工具チェックを、予めパラメータとし
て定めである指令を実行することにより行うようにした
ものである。
The tool life management method for an NC device according to the present invention is such that the preliminary tool check of the tool life management function is performed by executing a command that is predetermined as a parameter.

〔作 用〕[For production]

この発明におけるNC装置の工具寿命管理方式は、予備
工具のチェックを特別な指令により行い、T指令の時に
限らず、任意の過程でアラームを発生することができる
The tool life management system of the NC device according to the present invention checks spare tools using a special command, and can generate an alarm not only at the time of the T command but also at any time.

(実施例〕 以下、この発明の一実施例を図について説明する。図中
、第2図と同一の部分は同一の符号をもって図示した第
1図において1Mはパラメータに設定された予備工具チ
ェック指令である。
(Embodiment) Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. In the drawing, the same parts as in Fig. 2 are shown with the same symbols. In Fig. 1, 1M is a spare tool check command set as a parameter. It is.

次に動作について説明する。まず、第1図BでT指令が
なされたグループGRのうち予備工具がまだ存在する場
合には従来のNC装置と同様の動作を行うが、該当する
グループGRの工具がすべて寿命に達したか、破損して
いる場合(例えば、GR=2の場合)には、T指令時に
はアラームとせず、寿命に達した工具(ST=2の工具
)の中から一番使用時間USEDが短いものを選択して
加工を続行する(ST−2A)。そして予めパラメータ
に設定された予備工具チェック指令M(例えば、M99
9)を実行すると、工具寿命管理テーブルBの中のすべ
てのグループについて予備工具のチェックを行い、倒れ
か1つのグループでも予備工具が無い場合にはアラーム
が発生する。
Next, the operation will be explained. First, if there are still spare tools in the group GR for which the T command was issued in Figure 1B, the same operation as a conventional NC device is performed, but if all the tools in the corresponding group GR have reached the end of their service life? , if it is damaged (for example, when GR = 2), an alarm will not be generated when the T command is issued, and the tool with the shortest usage time USED will be selected from among the tools that have reached the end of their life (tools with ST = 2). and continue processing (ST-2A). Then, a preliminary tool check command M (for example, M99
When step 9) is executed, spare tools are checked for all groups in the tool life management table B, and an alarm is generated if the tool falls down or if even one group does not have a spare tool.

従って、この場合、[M999Jというパラメータに設
定された予備工具チェック指令Ml加工する過程におい
て区切りの良い時に行うことによりアラームによって加
工途中で運転が中断されてしまうことが無くなる。例え
ば第1図の状態において「T2」が指令された場合、グ
ループGR「2」の工具はすべて寿命に達しているが、
この場合には一番使用時間が少ないT=22を選択する
ことによりアラームとはしない。そして後にパラメータ
に設定された予備工具チェック指令M、すなわち「M9
99Jを実行した時にアラームとする。
Therefore, in this case, by performing the preliminary tool check command Ml set in the parameter [M999J at a good time in the process of machining, the operation will not be interrupted in the middle of machining due to an alarm. For example, if "T2" is commanded in the state shown in Figure 1, all the tools in group GR "2" have reached the end of their service life, but
In this case, by selecting T=22, which has the least usage time, no alarm is generated. Then, the preliminary tool check command M set in the parameter later, that is, "M9
An alarm is generated when 99J is executed.

なお、上記実施例では、予備工具のチェックを実行する
のにパラメータを設け、そこに設定しである指令を実行
することによって行っているが、エンドオププログラム
[MO2J又はエンドオプテープ「M30Jのときに予
備工具のチェックを行うようにしても良い。
In the above embodiment, the spare tool check is performed by setting parameters and executing certain commands. It is also possible to check the spare tools.

〔発明の効果〕〔Effect of the invention〕

以上のようにこの発明によれば、予備工具のチェックを
行うのに特殊な工具チェック指令によって行うようにし
たので、任意の加工過程で工具寿命管理テーブルをチェ
ックできるとともに、従来のように加工過程の途中でア
ラームとなり、運転が中断されることがなくなるため、
加工物が加工過程の途中で長時間放置されることも無く
、かつ変形等による加工精度の低下をまねくこともなく
なる等の効果がある。
As described above, according to the present invention, spare tools are checked using a special tool check command, so the tool life management table can be checked in any machining process, and the tool life management table can be checked in any machining process. This eliminates the possibility of an alarm going off during the process and interrupting operation.
This has the advantage that the workpiece will not be left standing for a long time during the machining process, and there will be no deterioration in machining accuracy due to deformation or the like.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明の一実施例による数値制御装置の工具
寿命管理機能の概略フローチャート、第2図は従来の工
具寿命管理機能の概略フローチャートである。 図において、Aはフローチャート、Bは工具寿命管理テ
ーブル、Mはパラメータに設定された予備工具チェック
指令。 特許出願人  三菱電機株式会社 代理人 弁理士  1)澤 博 昭 (外2名) (A) 図 (B) B: 工輿寿4viテーフフレ
FIG. 1 is a schematic flowchart of a tool life management function of a numerical control device according to an embodiment of the present invention, and FIG. 2 is a schematic flowchart of a conventional tool life management function. In the figure, A is a flowchart, B is a tool life management table, and M is a spare tool check command set as a parameter. Patent applicant Mitsubishi Electric Co., Ltd. Agent Patent attorney 1) Hiroshi Sawa (2 others) (A) Diagram (B) B: Kokoshiju 4vi Tefufure

Claims (1)

【特許請求の範囲】[Claims] T指令が与えられた時に工具寿命管理テーブルに照らし
該当グループから使用可能工具を判別して選択する工具
寿命管理機能を備えたNC装置の工具寿命管理方式にお
いて、前記使用可能な予備工具のチェックを前記T指令
時に限定せずパラメータに設定された予備工具チェック
のM指令を実行することにより任意の加工過程で実行可
能にしたことを特徴とするNC装置の工具寿命管理方式
In the tool life management method of an NC device that is equipped with a tool life management function that identifies and selects a usable tool from a corresponding group in reference to a tool life management table when a T command is given, the above-mentioned usable spare tools are checked. A tool life management method for an NC device, characterized in that it can be executed in any machining process by executing an M command for preliminary tool checking set in a parameter, not only at the time of the T command.
JP18293285A 1985-08-22 1985-08-22 Tool life control system for numerically controlled device Pending JPS6244357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18293285A JPS6244357A (en) 1985-08-22 1985-08-22 Tool life control system for numerically controlled device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18293285A JPS6244357A (en) 1985-08-22 1985-08-22 Tool life control system for numerically controlled device

Publications (1)

Publication Number Publication Date
JPS6244357A true JPS6244357A (en) 1987-02-26

Family

ID=16126892

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18293285A Pending JPS6244357A (en) 1985-08-22 1985-08-22 Tool life control system for numerically controlled device

Country Status (1)

Country Link
JP (1) JPS6244357A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63295157A (en) * 1987-05-26 1988-12-01 Fanuc Ltd Numerical control system
JPH03245949A (en) * 1990-02-26 1991-11-01 Fanuc Ltd Method of managing tool life
JP2017019040A (en) * 2015-07-09 2017-01-26 ローランドディー.ジー.株式会社 Cutting machine and machining tool determination method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63295157A (en) * 1987-05-26 1988-12-01 Fanuc Ltd Numerical control system
JPH03245949A (en) * 1990-02-26 1991-11-01 Fanuc Ltd Method of managing tool life
JP2017019040A (en) * 2015-07-09 2017-01-26 ローランドディー.ジー.株式会社 Cutting machine and machining tool determination method

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