JP2010015288A - Work process management method and device in job shop system - Google Patents

Work process management method and device in job shop system Download PDF

Info

Publication number
JP2010015288A
JP2010015288A JP2008173210A JP2008173210A JP2010015288A JP 2010015288 A JP2010015288 A JP 2010015288A JP 2008173210 A JP2008173210 A JP 2008173210A JP 2008173210 A JP2008173210 A JP 2008173210A JP 2010015288 A JP2010015288 A JP 2010015288A
Authority
JP
Japan
Prior art keywords
work
time
tag
workpiece
location
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
JP2008173210A
Other languages
Japanese (ja)
Inventor
Seiji Hosoya
征史 細矢
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.)
IHI Corp
Original Assignee
IHI 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 IHI Corp filed Critical IHI Corp
Priority to JP2008173210A priority Critical patent/JP2010015288A/en
Publication of JP2010015288A publication Critical patent/JP2010015288A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/30Computing systems specially adapted for manufacturing

Landscapes

  • General Factory Administration (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a work process management method and device in a job shop system, which properly manages a process ( location and residence time) of each article (workpiece), easily recognize an actual situation of each work center, and achieves efficient production management, in a job-shop factory in which a work place is divided for each work process, the workpiece moves to each work place for each process in a predetermined process order decided for each workpiece. <P>SOLUTION: IC tags 12 each recording an ID are attached to all the works, IC tag readers 14 are installed on all conveying paths between the work places, the IC tag is read during conveyance by the IC tag reader, and it is decided that the work has moved from one process to the next process in the process order at that time, to manage the process of the work. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、ジョブショップ型方式の工場において、ワークの工程を管理する方法と装置に関する。   The present invention relates to a method and apparatus for managing a work process in a job shop type factory.

本出願において、「ワークの工程管理」とは、ワークの所在地管理と、各工程間の滞留時間の管理を意味する。   In the present application, “work process management” means work location management and dwell time management between processes.

近年、製品の組み立て工場では、仕掛かり在庫の削減や生産効率の改善を目指して、作業者ごとの作業の種類を増やしベルトコンベアなどの自動搬送装置を使うことなく人が仕掛品を次工程に送るセル生産方式が採用されることがある。   In recent years, at product assembly factories, in order to reduce in-process inventory and improve production efficiency, the number of types of work for each worker has been increased, and people have taken work-in-process items to the next process without using automatic conveyors such as belt conveyors. A cell production system to be sent may be adopted.

しかし、セル生産では、製造中の仕掛品の物流状況の把握が難しく、フレキシブルに工程を変更できるセル生産の特徴を生かし難い面がある。
そこで、例えば特許文献1〜3が提案されている。
However, in cell production, it is difficult to grasp the state of physical distribution of work in progress, and it is difficult to take advantage of the characteristics of cell production that can change processes flexibly.
Therefore, for example, Patent Documents 1 to 3 have been proposed.

特許文献1の生産管理方法は、セル生産の特徴を生かしつつ生産状況を把握することを目的とする。
そのため、特許文献1の発明は、セル生産の各工程の入口と出口にRFID質問器のアンテナを設置し、製品を載せる製品台車にRFIDタグを付与し、台車が質問器を通過するときに台車のタグのIDコードを検知し、その通過時刻を読み取ることにより製品がセル内の各工程を移動する状況を把握するものである。
The production management method of Patent Document 1 aims to grasp the production status while making use of the characteristics of cell production.
Therefore, in the invention of Patent Document 1, an RFID interrogator antenna is installed at the entrance and exit of each process of cell production, an RFID tag is attached to a product cart on which the product is placed, and the cart moves when the cart passes the interrogator. By detecting the ID code of the tag and reading the passage time, it is possible to grasp the situation in which the product moves through each process in the cell.

特許文献2の支援システムは、各工程の出入り口およびラインの投入口、完了時の通過時刻を把握することにより、各工程の作業時間と工程間の作業時間を計測し、工程の作業時間と滞留時間の相関などを分析することにより工程を改善するものである。   The support system of Patent Document 2 measures the working time of each process and the working time between processes by grasping the entrance / exit of each process, the entry / exit of the line, and the passing time at the completion of the process. The process is improved by analyzing time correlation and the like.

特許文献3の表示システムは、順序を入れ替え可能な複数の工程を含むワーク(製品)に対し、待ち時間を最小にするための作業順序を提示するために、処理センター(工場・ラインに相当)、各工程の出入りを検知して、滞留している個数を把握しつつ、処理センターへの投入時および各工程の終了時にそのワークの工程の順序を提示するものである。   The display system of Patent Document 3 is a processing center (corresponding to a factory / line) for presenting a work order for minimizing waiting time for a work (product) including a plurality of processes whose order can be changed. Detecting the entry / exit of each process, grasping the number of staying, and presenting the order of the process of the workpiece at the time of entering the processing center and at the end of each process.

特開2006−26843号明細書、「生産管理方法及び生産システム」JP 2006-26843 A, “Production Management Method and Production System” 特開2006−202255号明細書、「工程改善支援システム」Japanese Patent Application Laid-Open No. 2006-202255, “Process Improvement Support System” 特開2005−258595号明細書、「工程投入順序表示システムと表示方法とそのためのプログラム」Japanese Patent Application Laid-Open No. 2005-258595, “Process input order display system, display method, and program therefor”

上述した特許文献1の方法は、セル生産の各工程の出入り口にICタグ(RFIDタグ)の読み取り器を設置し、それを通過した時刻から工程に存在する時間、運搬時間を判断するものであり、同一の製品をベルトコンベアを用いないセル生産における工程管理システムである。   In the method of Patent Document 1 described above, a reader for an IC tag (RFID tag) is installed at the entrance and exit of each process of cell production, and the time existing in the process and the transportation time are determined from the time when it passes through the reader. This is a process management system in cell production of the same product without using a belt conveyor.

また、特許文献2では、各工程の作業時間は、工程の出入の時間を把握することにより計測している。これはライン生産型のモノの流れがそれほど複雑でないために成立するものであり、ジョブショップ型で、モノの流し方に様々なパターン(次工程の置き場の制約や、搬送効率の関係で一定の量の搬送物がたまるのを待つ、など)が存在する場合には、どこで滞留しているかが必ずしも正確に把握できない問題点がある。   Moreover, in patent document 2, the work time of each process is measured by grasping | ascertaining the time of entry / exit of a process. This is true because the flow of goods in the line production type is not so complicated, and it is a job shop type, and there are various patterns in the way of flowing things (constant due to restrictions on the place of the next process and the efficiency of conveyance) There is a problem that it is not always possible to accurately grasp where the object is staying.

また、特許文献3は、各工程の滞留状況から、最適な作業順序を示すものである。ただし、滞留状況の把握方法は各工程への出入時間を基準としているため、特許文献2と同様に、ジョブショップ型では、どこで滞留しているかが必ずしも正確に把握できない問題点がある。   Moreover, patent document 3 shows the optimal operation | work order from the retention condition of each process. However, since the grasping method of the staying state is based on the entry / exit time to each process, as in Patent Document 2, the job shop type has a problem that it is not always possible to accurately grasp where it is staying.

一方、ベルトコンベア方式やセル生産方式が適用できない、多品種少量生産の工場、例えば、大型機械部品の修理や生産を行う工場では、ジョブショップ型方式が採用される。ジョブショップ型方式とは、例えば機械加工、板金、塗装、検査等の作業工程(ジョブ)毎に作業場所(ワークセンターと呼ぶ)が分かれており、修理や生産を行うワークは、ワーク毎に予め決められた工程順で各作業場所に移動して各工程の作業を行うものである。   On the other hand, a job shop type method is employed in a factory for a variety of small-quantity production, for example, a factory for repairing or producing large machine parts, to which the belt conveyor method or the cell production method cannot be applied. In the job shop type method, for example, the work place (called a work center) is divided for each work process (job) such as machining, sheet metal, painting, and inspection. Each process is performed by moving to each work place in a predetermined process order.

ジョブショップ型方式の工場における物流には以下のような特徴がある。
(1) ワークにより、ワークセンター(工程)の移動経路がさまざまである。
(2) ワークの大きさが数cm〜数mに及ぶものまで様々なものが常時混在する。そのため、各ワークセンターにおけるモノ(ワーク)の搬入品・搬出品の置場が一意に定められない。またワークの運搬方法もパレットによる個別搬送から数ロットまとまってからの搬送など様々なパターンが存在する。
Logistics in a job shop type factory has the following characteristics.
(1) Depending on the workpiece, the movement path of the work center (process) varies.
(2) Various things are always mixed, including workpieces ranging from several centimeters to several meters. For this reason, a place for carrying in goods / unloading of goods (work) at each work center is not uniquely determined. In addition, there are various patterns of workpiece conveyance methods, such as individual conveyance by pallet to conveyance after several lots are assembled.

このような条件下で各物品(ワーク)の工程(所在地と滞留時間)を正確に管理するのは非常に難しい。
ただし、ワークひとつひとつの工程順序、および各ワークセンターにおける作業者の作業報告、といった、工場における業務が成立するための情報は存在する。
従来は、これらの情報(ワーク毎の工程順序と作業報告)を用いて、いつどの工程の作業が終了したかにより、各ワークの工程を管理していた。
しかし、かかる従来の情報では実際に作業にかかっている時間、作業終了後、ワークが前工程に留まっているのか次工程に移動しているのか、などが把握できないため、各ワークセンターの実際の状況が把握できず、効率的な生産計画の立案ができないという課題があった。
It is very difficult to accurately manage the process (location and residence time) of each article (work) under such conditions.
However, there is information for establishing the work in the factory, such as the process order of each work and the work report of the worker in each work center.
Conventionally, using these pieces of information (process order and work report for each work), the process of each work is managed depending on when and which work has been completed.
However, with such conventional information, it is not possible to grasp the time actually taken by the work, whether the work stays in the previous process or moves to the next process after the work is finished, so the actual information of each work center There was a problem that the situation could not be grasped and an efficient production plan could not be made.

本発明は上述した従来の問題点を解決するために創案されたものである。すなわち、本発明の目的は、作業工程毎に作業場所が分かれており、ワーク毎に予め決められた工程順で各作業場所に移動して各工程の作業を行うジョブショップ型方式の工場において、各物品(ワーク)の工程(所在地と滞留時間)を正確に管理し、各ワークセンターの実際の状況が容易に把握でき、効率的な生産管理が可能となるジョブショップ型方式におけるワークの工程管理方法と装置を提供することにある。   The present invention has been developed to solve the above-described conventional problems. That is, the object of the present invention is that the work place is divided for each work process, in a job shop type factory that moves to each work place in the order of processes determined in advance for each work and performs the work of each process, Work process management in a job shop type system that enables accurate management of the process (location and residence time) of each article (work), enables easy grasp of the actual situation of each work center, and enables efficient production management. It is to provide a method and apparatus.

本発明によれば、作業工程毎に作業場所が分かれており、ワーク毎に予め決められた工程順で各作業場所に移動して各工程の作業を行うジョブショップ型方式におけるワークの工程管理方法であって、
すべてのワークにIDを記録したICタグを1つずつ取り付け、
作業場所間のすべての搬送経路上に、ICタグ読み取り器を設置し、
ICタグ読み取り器により搬送中にICタグを読み取って、その時点でワークの位置が前記工程順の前工程から次工程へ移動したと判断し、ワークの所在地を管理する、ことを特徴とするジョブショップ型方式におけるワークの工程管理方法が提供される。
According to the present invention, the work place is divided for each work process, and the work process management method in the job shop type system in which the work place is moved to each work place in the order of processes determined in advance for each work. Because
Attach IC tags with IDs to all works one by one,
IC tag readers are installed on all transport paths between work places,
An IC tag is read during conveyance by an IC tag reader, and it is determined that the position of the workpiece has moved from the previous process to the next process at that time, and the location of the workpiece is managed. A work process management method in a shop type method is provided.

本発明の好ましい実施形態によれば、ICタグに記録された工程順と異なるワークの移動が行われた場合に、アラームを発すると共に、ICタグ読み取り器によりそのICタグを読み取った最後の場所と時刻を記憶し、ワークの所在地を推定する。   According to a preferred embodiment of the present invention, when a movement of a work different from the process order recorded on the IC tag is performed, an alarm is generated, and the last place where the IC tag is read by the IC tag reader Memorize the time and estimate the work location.

また、前記搬送中にICタグを読み取った時点を、前工程の終了時刻かつ次工程の開始時刻と判断して、各工程に存在した時間を求め、これから予め定められた標準作業時間を差し引いたものを、各工程の滞留時間とみなす。   Also, the time when the IC tag is read during the conveyance is determined as the end time of the previous process and the start time of the next process, the time existing in each process is obtained, and a predetermined standard work time is subtracted from this. Is regarded as the residence time of each step.

また、前記搬送中にICタグを読み取った時点を、前工程の終了時刻かつ次工程の開始時刻と判断して、各工程に存在した時間を求め、
各工程の着手時刻と完了時刻を各作業場所において取得し、前工程の終了時刻から着手時刻までを作業前滞留時間、完了時刻から次工程の開始時刻までを作業後滞留時間とみなしてもよい。
Further, the time when the IC tag is read during the conveyance is determined as the end time of the previous process and the start time of the next process, and the time existing in each process is obtained.
The start time and completion time of each process may be acquired at each work place, and the pre-work residence time from the end time of the previous process to the start time may be considered, and the post-work residence time from the completion time to the start time of the next process may be considered. .

また、本発明によれば、作業工程毎に作業場所が分かれており、ワーク毎に予め決められた工程順で各作業場所に移動して各工程の作業を行うジョブショップ型方式におけるワークの工程管理装置であって、
すべてのワークに1つずつ取り付けられ、そのワークのIDを記録した複数のICタグと、
作業場所間のすべての搬送経路上に設置されたICタグ読み取り器と、
ICタグ読み取り器により搬送中にICタグを読み取って、その場所と時刻を記憶し、その時点でワークの位置が前記工程順の前工程から次工程へ移動したと判断し、ワークの位置を管理するワーク管理装置とを備える、ことを特徴とするジョブショップ型方式におけるワークの工程管理装置が提供される。
In addition, according to the present invention, the work place is divided for each work process, and the work process in the job shop type method in which the work place is moved to each work place in the order of processes determined in advance for each work. A management device,
A plurality of IC tags that are attached to all works one by one and record the ID of the work,
IC tag readers installed on all transport paths between work places;
The IC tag is read during conveyance by the IC tag reader, and the location and time are stored. At that time, it is determined that the position of the work has moved from the previous process to the next process, and the position of the work is managed. A work process management apparatus in a job shop type system is provided.

本発明の方法および装置によれば、作業工程毎に作業場所が分かれており、ワーク毎に予め決められた工程順で各作業場所に移動して各工程の作業を行うジョブショップ型方式の工場において、
すべてのワークに1つずつ取り付けられた複数のICタグにそのワークのIDを記録し、
作業場所間のすべての搬送経路上に設置されたICタグ読み取り器により、搬送中にICタグを読み取って、その場所と時刻を記憶し、その時点でワークの位置が前記工程順の前工程から次工程へ移動したと判断し、ワークの位置を管理するので、作業終了後、ワークが前工程に留まっているのか次工程に移動しているのかの判断が容易にできるので、各物品(ワーク)の所在地を正確に管理できる。
According to the method and apparatus of the present invention, the work place is divided for each work process, and the job shop type factory that moves to each work place in the order of processes determined in advance for each work and performs the work of each process. In
Record the ID of the work on multiple IC tags attached to every work,
IC tag readers installed on all transfer paths between work locations read IC tags during transfer and store the location and time. At that time, the position of the workpiece is changed from the previous step in the order of the steps. Since it is determined that the workpiece has moved to the next process and the position of the workpiece is managed, it is possible to easily determine whether the workpiece has remained in the previous process or moved to the next process after the work is completed. ) Can be managed accurately.

また、前記搬送中にICタグを読み取った時点を、前工程の終了時刻かつ次工程の開始時刻と判断して、各工程に存在した時間を求め、これから予め定められた標準作業時間を差し引いたものを、各工程の滞留時間とみなすことにより、各ワークの各工程の滞留時間を正確に管理できる。
従って、各物品(ワーク)の工程(所在地と滞留時間)を正確に管理し、各ワークセンターの実際の状況が容易に把握でき、効率的な生産管理が可能となる。
Also, the time when the IC tag is read during the conveyance is determined as the end time of the previous process and the start time of the next process, the time existing in each process is obtained, and a predetermined standard work time is subtracted from this. By considering a thing as the residence time of each process, the residence time of each process of each workpiece | work can be managed correctly.
Accordingly, the process (location and residence time) of each article (work) can be accurately managed, the actual situation of each work center can be easily grasped, and efficient production management can be performed.

以下、本発明の好ましい実施例を図面を参照して説明する。なお、各図において共通する部分には同一の符号を付し、重複した説明を省略する。   Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.

図1は、本発明によるワークの工程管理装置の構成図であり、図2は、図1におけるワークの移動経路の具体例である。
本発明のワークの工程管理装置10は、ジョブショップ型方式の工場において、ワークの工程(所在地と滞留時間)を管理する装置である。ジョブショップ型方式の工場では作業工程毎に作業場所が分かれており、この例では、A,B,C,D,Eの各工程(ワークセンター)が存在するものとする。A工程は例えば板金,B工程は例えば塗装,C工程は例えば機械加工,D工程は例えば洗浄,E工程は例えば検査である。
また、ジョブショップ型方式の工場では、ワーク毎に予め決められた工程順で各作業場所に移動して各工程の作業を行う。例えば、ある部品P(ワークP)が工場に投入されたとき、図2に示すように初期情報としてワークPは工程A→C→E→Bと移動することが分かっているものとする。(図2)
FIG. 1 is a configuration diagram of a workpiece process management apparatus according to the present invention, and FIG. 2 is a specific example of a workpiece movement path in FIG.
The workpiece process management device 10 of the present invention is a device that manages a workpiece process (location and residence time) in a job shop type factory. In a job shop type factory, work places are divided for each work process. In this example, it is assumed that each process (work center) of A, B, C, D, and E exists. The A process is, for example, sheet metal, the B process is, for example, painting, the C process is, for example, machining, the D process is, for example, cleaning, and the E process is, for example, inspection.
Also, in a job shop type factory, each work is moved to each work place in the order of processes determined in advance for each work. For example, when a certain part P (work P) is put into a factory, it is assumed that the work P moves as processes A → C → E → B as initial information as shown in FIG. (Figure 2)

本発明のワークの工程管理装置10は、複数のICタグ12、ICタグ読み取り器14、およびワーク管理装置16を備える。   The work process management device 10 of the present invention includes a plurality of IC tags 12, an IC tag reader 14, and a work management device 16.

複数のICタグ12は、すべてのワークPに1つずつ取り付けられ、そのワークPのIDを記録する。ICタグ12は、無線通信回路、ロジック回路、及びメモリ部を含む半導体ICチップと無線アンテナからなり、ICタグ読み取り器14との間で無線通信を行う。   The plurality of IC tags 12 are attached to all the works P one by one and record IDs of the works P. The IC tag 12 includes a semiconductor IC chip including a wireless communication circuit, a logic circuit, and a memory unit and a wireless antenna, and performs wireless communication with the IC tag reader 14.

ICタグ読み取り器14は、作業場所間のすべての搬送経路上に設置される。この例において、ICタグ読み取り器14は、図1の斜線部(通信範囲)をカバーするように1台のみが設けられているが、2台以上を任意の場所に設置することができる。ICタグ読み取り器14は、通信範囲に位置するICタグ12と通信し、そのIDを読み出しできるようになっている。   The IC tag reader 14 is installed on all conveyance paths between work places. In this example, only one IC tag reader 14 is provided so as to cover the shaded area (communication range) in FIG. 1, but two or more IC tag readers 14 can be installed in any place. The IC tag reader 14 communicates with the IC tag 12 located in the communication range and can read the ID.

ワーク管理装置16は、ICタグ読み取り器14に接続されたコンピュータ(PC)であり、ICタグ読み取り器14により搬送中にICタグ12を読み取って、その場所と時刻を記憶し、その時点でワークPの位置が工程順の前工程から次工程へ移動したと判断し、ワークの位置を管理する。   The work management device 16 is a computer (PC) connected to the IC tag reader 14, reads the IC tag 12 during conveyance by the IC tag reader 14, stores its location and time, and works at that time. It is determined that the position of P has moved from the previous process to the next process in the process order, and the position of the workpiece is managed.

図3は、本発明によるワークの工程管理方法のフロー図である。この図に示すように、本発明の方法は、S1〜S10の各ステップからなる。   FIG. 3 is a flowchart of the work process management method according to the present invention. As shown in this figure, the method of the present invention comprises steps S1 to S10.

ステップS1では、すべてのワークPにIDと予め決められた工程順を記録したICタグ12を取り付ける。また、すべてのICタグ12の記憶情報は、ワーク管理装置16にも記憶させる。このステップS1は、ワークが工場に入荷されたときに実施するのがよい。
ここでICタグ12の取付けは、大型部品であればこれに直接取付け、小型部品(例えば、ボルト、ナット)であれば、その容器に取り付ける。いずれの場合も、ワークPとそのICタグ12は、一体として移動し、特別な工具を用いないかぎり、別々にはならないようにする。
In step S1, IC tags 12 on which IDs and predetermined process orders are recorded are attached to all works P. Further, the storage information of all the IC tags 12 is also stored in the work management device 16. This step S1 is preferably performed when the workpiece is received in the factory.
Here, the IC tag 12 is attached directly to a large part if it is a large part, and attached to its container if it is a small part (for example, a bolt or a nut). In either case, the workpiece P and its IC tag 12 move as a unit and are not separated unless a special tool is used.

ステップS2では、作業場所間のすべての搬送経路上に、ICタグ読み取り器14を設置する。ICタグ読み取り器14の設置は、ジョブショップ型方式の工場では、ICタグ読み取り器14の通信範囲に応じて固定位置に設定するのが好ましいが、必要に応じて移動可能なICタグ読み取り器14を用いてもよい。
ICタグ読み取り器14とワーク管理装置16との間は、無線LAN又は有線LANにより、双方向の通信が可能なように接続する。
In step S2, the IC tag reader 14 is installed on all the conveyance paths between the work places. In the job shop type factory, the IC tag reader 14 is preferably set at a fixed position according to the communication range of the IC tag reader 14, but the IC tag reader 14 that can be moved as necessary. May be used.
The IC tag reader 14 and the work management device 16 are connected by a wireless LAN or a wired LAN so that bidirectional communication is possible.

ステップS3では、作業場所間の搬送経路を通って、ワークを搬送する。この搬送は、従来のジョブショップ型方式と同様に、修理や生産を行うワークを、ワーク毎に予め決められた工程順で各作業場所に移動することにより、自動的に実行される。   In step S3, the workpiece is transferred through a transfer path between work places. Similar to the conventional job shop type method, this transfer is automatically executed by moving a work to be repaired or produced to each work place in a predetermined process order for each work.

ステップS4では、ICタグ読み取り器14によりワークの搬送中にそのワークのICタグ12を読み取る。
次いで、ステップS5において、読み取ったICタグ12の工程順がワーク管理装置16に記憶された工程順と一致するかを判断する。
ステップS5で工程順が正しい場合(YES)には、その時点でワークの位置が記憶された工程順の前工程から次工程へ移動したと判断し(S6)、ワークの所在地を管理する(S7)。
この方法により、ワークの移動中に次工程へ移動したと判断することから、移動に要する時間分の誤差が生じるが、移動時間は一般にワークセンターにおける滞在時間に比べて短いので、実際に近い各物品(ワーク)の所在地を正確に管理し、各ワークセンターの実際の状況を容易に把握できる。
In step S4, the IC tag reader 14 reads the IC tag 12 of the workpiece while the workpiece is being conveyed.
Next, in step S <b> 5, it is determined whether the process order of the read IC tag 12 matches the process order stored in the work management device 16.
If the process order is correct in step S5 (YES), it is determined that the position of the work has moved from the previous process to the next process in the stored process order (S6), and the work location is managed (S7). ).
By this method, it is determined that the workpiece has moved to the next process during the movement of the workpiece, so an error corresponding to the time required for the movement occurs. However, since the movement time is generally shorter than the staying time at the work center, The location of goods (work) can be accurately managed, and the actual situation of each work center can be easily grasped.

ステップS5で工程順が誤っている場合(NO)には、アラームを発する(S8)と共に、ICタグ読み取り器14によりそのICタグ12を読み取った最後の場所と時刻を記憶し(S9)、ワークの所在地を推定する(S10)。
この方法により、工程順が誤っている場合に、アラームにより誤りを早期に発見でき、かつ最後の場所と時刻から実際の各物品(ワーク)の所在地を早期かつ容易に推定できる。従って、正しい工程順にワークを早期に戻すことができる。
If the process order is incorrect in step S5 (NO), an alarm is issued (S8) and the last place and time when the IC tag 12 is read by the IC tag reader 14 is stored (S9). Is estimated (S10).
According to this method, when the process order is wrong, an error can be detected early by an alarm, and the actual location of each article (work) can be estimated early and easily from the last place and time. Therefore, the workpiece can be returned early in the correct process order.

図4は、本発明の実施例を示す模式図である。この図において、(A)は実際のワーク位置、(B)は作業報告による工程管理、(C)は本発明による工程管理を示している。   FIG. 4 is a schematic diagram showing an embodiment of the present invention. In this figure, (A) shows the actual work position, (B) shows the process management based on the work report, and (C) shows the process management according to the present invention.

図4(A)に示すように、ワークひとつひとつの工程順序の情報と、各ワークセンターにおける作業者の作業報告は、工場における業務が成立するために従来から管理されている。   As shown in FIG. 4 (A), information on the process sequence of each work and the work report of the worker at each work center have been conventionally managed in order to establish the work in the factory.

従来は、これらの情報(ワーク毎の工程順序と作業報告)を用いて、いつどの工程の作業が終了したかにより、各ワークの所在地を管理していた。
この結果、従来の工程管理では、作業終了後、ワークが前工程に留まっているのか次工程に移動しているのか、などは把握できないため、図4(B)に示すように、実際のワーク位置と工程管理上のワーク位置が必ずしも一致せず、各ワークセンターの実際の状況が把握できず、効率的な生産計画の立案ができない。
Conventionally, the location of each work has been managed by using this information (process order and work report for each work) depending on when and which work has been completed.
As a result, in the conventional process management, it is not possible to know whether the work stays in the previous process or moves to the next process after the work is completed. Therefore, as shown in FIG. The position of the work and the work position in process management do not always match, the actual situation of each work center cannot be grasped, and an efficient production plan cannot be made.

これに対して、本発明による工程管理では、ワークの移動中に次工程へ移動したと判断することから、移動に要する時間分の誤差が生じるが、移動時間は一般にワークセンターにおける滞在時間に比べて短いので、実際に近い各物品(ワーク)の所在地をほぼ正確に管理し、各ワークセンターの実際の状況を容易に把握できる。   On the other hand, in the process management according to the present invention, it is determined that the work has moved to the next process during the movement of the work, so an error corresponding to the time required for the movement occurs. Therefore, it is possible to almost accurately manage the location of each article (work) that is close to the actual and easily grasp the actual situation of each work center.

また、上述したように、本発明の方法では、工程順が誤っている場合に、アラームにより誤りを早期に発見でき、かつ最後の場所と時刻から実際の各物品(ワーク)の所在地を早期かつ容易に推定できる。従って、正しい工程順にワークを早期に戻すことができる。   Further, as described above, in the method of the present invention, when the process order is incorrect, an error can be detected early by an alarm, and the actual location of each article (work) can be determined early from the last location and time. Easy to estimate. Therefore, the workpiece can be returned early in the order of the correct process.

図5は、本発明の別の実施例を示す模式図である。この図において、(A)は実際のワーク位置、(B)は各工程に存在する時間、(C)は各工程の作業時間、(D)は各工程の滞留時間を示している。   FIG. 5 is a schematic view showing another embodiment of the present invention. In this figure, (A) shows the actual work position, (B) shows the time existing in each process, (C) shows the work time of each process, and (D) shows the residence time of each process.

図5(B)は、図4(C)と同一であり、搬送中にICタグを読み取った時点を、前工程の終了時刻かつ次工程の開始時刻と判断して、各工程に存在した時間を求める。図5(C)の各工程の作業時間は、予め定められた標準作業時間(既知)とする。図5(D)では、各工程に存在した時間から予め定められた標準作業時間を差し引いたものを、各工程の滞留時間とみなす。   FIG. 5 (B) is the same as FIG. 4 (C). The time when the IC tag is read during conveyance is determined as the end time of the previous process and the start time of the next process, and the time existing in each process. Ask for. The work time of each process in FIG. 5C is a predetermined standard work time (known). In FIG. 5D, a time obtained by subtracting a predetermined standard work time from a time existing in each process is regarded as a residence time of each process.

上述した方法では、予め工程管理システム等で把握している工程順序情報に対し、搬送途中にICタグを読み取ったことにより、モノの位置が前工程から次工程へ移動したと判断し、この時刻を各工程間の移動の切れ目、即ち前工程の終了時刻かつ次工程の開始時刻として、最終工程までに搬送時刻を逐次記録することで、各工程に存在した時間を計測する。
また上記で計測した各工程に存在した時間から、各工程の所要時間データとして、あらかじめ定められている標準作業時間を差し引いたものを、各工程の滞留時間(待ち時間)とみなすことにより、滞留時間を計算する。
In the above-described method, it is determined that the position of the object has moved from the previous process to the next process by reading the IC tag in the middle of the conveyance with respect to the process order information previously grasped by the process management system or the like. Is recorded as a break of movement between each process, that is, the end time of the previous process and the start time of the next process, and the transfer time is sequentially recorded until the final process, thereby measuring the time existing in each process.
In addition, by subtracting the standard work time set in advance as the required time data for each process from the time existing in each process measured above, Calculate time.

なお上記方法では、搬送そのものにかかる時間が前工程または後工程の作業時間に含まれているが、上述したようなジョブショップ型の工場においては、各工程の作業時間に比べて、時間そのものも時間のバラツキも小さいため、誤差と見做せる。なお、あらかじめ標準搬送時間等を定めておき、算出した滞留時間からさらに差し引いてもよい。   In the above method, the time required for the conveyance itself is included in the work time of the previous process or the subsequent process. However, in the job shop type factory as described above, the time itself is also compared with the work time of each process. Since time variation is small, it can be considered as an error. Note that a standard conveyance time or the like may be determined in advance, and further subtracted from the calculated residence time.

また、図5と相違し、搬送中にICタグを読み取った時点を、前工程の終了時刻かつ次工程の開始時刻と判断して、各工程に存在した時間を求め、各工程の着手時刻と完了時刻を各作業場所において取得し、前工程の終了時刻から着手時刻までを作業前滞留時間、完了時刻から次工程の開始時刻までを作業後滞留時間とみなしてもよい。   Further, unlike FIG. 5, the time when the IC tag is read during conveyance is determined as the end time of the previous process and the start time of the next process, the time existing in each process is obtained, the start time of each process and The completion time may be acquired at each work place, and the pre-work residence time from the end time of the previous process to the start time may be regarded as the pre-work residence time, and the post-work residence time from the completion time to the start time of the next process.

すなわち、各工程の所要時間データとして、各工程の着手時、完了時にバーコード/ICタグなどの識別手段を用いて時刻情報を取得することにより、算出する滞留時間の精度をさらに上げることができる。
この場合、各工程の着手時、完了時の時刻情報と工程間の搬送時刻を用いて、各工程の作業着手前の滞留時間(作業前滞留:工程準備などによる待ち)、作業終了後の滞留時間(作業後滞留:搬送手段の準備等による待ち)を識別する。
このとき、作業前滞留時間は、着手時刻−現在工程への搬送時刻、作業後滞留時間は、次工程への搬送時刻−完了時刻、となる。
That is, as the required time data for each process, the time information is obtained by using an identification means such as a barcode / IC tag when each process is started and completed, thereby further improving the accuracy of the residence time to be calculated. .
In this case, using the time information at the start and completion of each process and the transfer time between processes, the dwell time before starting the work for each process (retention before work: waiting due to process preparation, etc.), dwell after the work is completed Identify time (retention after work: waiting due to preparation of transport means, etc.).
At this time, the residence time before work is the start time—the transfer time to the current process, and the post residence time is the transfer time to the next process—the completion time.

なお、本発明は上述した実施の形態に限定されず、本発明の要旨を逸脱しない範囲で種々の変更を加え得ることは勿論である。   In addition, this invention is not limited to embodiment mentioned above, Of course, a various change can be added in the range which does not deviate from the summary of this invention.

本発明によるワークの工程管理装置の構成図である。It is a block diagram of the process control apparatus of the workpiece | work by this invention. 図1におけるワークの移動経路の具体例である。It is a specific example of the movement path | route of the workpiece | work in FIG. 本発明によるワークの工程管理方法のフロー図である。It is a flowchart of the process management method of the workpiece | work by this invention. 本発明の実施例を示す模式図である。It is a schematic diagram which shows the Example of this invention. 本発明の別の実施例を示す模式図である。It is a schematic diagram which shows another Example of this invention.

符号の説明Explanation of symbols

10 工程管理装置、12 ICタグ、
14 ICタグ読み取り器、
16 ワーク管理装置
10 Process management device, 12 IC tag,
14 IC tag reader,
16 Work management device

Claims (5)

作業工程毎に作業場所が分かれており、ワーク毎に予め決められた工程順で各作業場所に移動して各工程の作業を行うジョブショップ型方式におけるワークの工程管理方法であって、
すべてのワークにIDを記録したICタグを1つずつ取り付け、
作業場所間のすべての搬送経路上に、ICタグ読み取り器を設置し、
ICタグ読み取り器により搬送中にICタグを読み取って、その時点でワークの位置が前記工程順の前工程から次工程へ移動したと判断し、ワークの所在地を管理する、ことを特徴とするジョブショップ型方式におけるワークの工程管理方法。
The work location is divided for each work process, and is a work process management method in a job shop type system in which each work place is moved to each work place in a predetermined process order for each work,
Attach IC tags with IDs to all works one by one,
IC tag readers are installed on all transport paths between work places,
An IC tag is read during conveyance by an IC tag reader, and it is determined that the position of the workpiece has moved from the previous process to the next process at that time, and the location of the workpiece is managed. Work process management method in shop type.
ICタグに記録された工程順と異なるワークの移動が行われた場合に、アラームを発すると共に、ICタグ読み取り器によりそのICタグを読み取った最後の場所と時刻を記憶し、ワークの所在地を推定する、ことを特徴とする請求項1に記載のジョブショップ型方式におけるワークの工程管理方法。   When a workpiece is moved out of the order recorded in the IC tag, an alarm is issued and the last location and time when the IC tag was read by the IC tag reader is stored, and the location of the workpiece is estimated. The work process management method in the job shop type system according to claim 1, wherein: 前記搬送中にICタグを読み取った時点を、前工程の終了時刻かつ次工程の開始時刻と判断して、各工程に存在した時間を求め、これから予め定められた標準作業時間を差し引いたものを、各工程の滞留時間とみなす、ことを特徴とする請求項1に記載のジョブショップ型方式におけるワークの工程管理方法。   The time at which the IC tag is read during the conveyance is determined as the end time of the previous process and the start time of the next process, the time existing in each process is obtained, and a value obtained by subtracting a predetermined standard work time from this time The work process management method in the job shop type system according to claim 1, wherein the process is regarded as a residence time of each process. 前記搬送中にICタグを読み取った時点を、前工程の終了時刻かつ次工程の開始時刻と判断して、各工程に存在した時間を求め、
各工程の着手時刻と完了時刻を各作業場所において取得し、前工程の終了時刻から着手時刻までを作業前滞留時間、完了時刻から次工程の開始時刻までを作業後滞留時間とみなす、ことを特徴とする請求項1に記載のジョブショップ型方式におけるワークの工程管理方法。
The time when the IC tag is read during the conveyance is determined as the end time of the previous process and the start time of the next process, and the time existing in each process is obtained.
The start time and completion time of each process are acquired at each work place, and the residence time before work from the end time of the previous process to the start time is regarded as residence time before work, and the residence time from completion time to the start time of the next process is regarded as residence time after work. The work process management method in the job shop type system according to claim 1, wherein:
作業工程毎に作業場所が分かれており、ワーク毎に予め決められた工程順で各作業場所に移動して各工程の作業を行うジョブショップ型方式におけるワークの工程管理装置であって、
すべてのワークに1つずつ取り付けられ、そのワークのIDを記録した複数のICタグと、
作業場所間のすべての搬送経路上に設置されたICタグ読み取り器と、
ICタグ読み取り器により搬送中にICタグを読み取って、その場所と時刻を記憶し、その時点でワークの位置が前記工程順の前工程から次工程へ移動したと判断し、ワークの位置を管理するワーク管理装置とを備える、ことを特徴とするジョブショップ型方式におけるワークの工程管理装置。
The work location is divided for each work process, and is a work process management apparatus in a job shop type system that moves to each work place in the order of processes determined in advance for each work and performs the work of each process,
A plurality of IC tags that are attached to all works one by one and record the ID of the work,
IC tag readers installed on all transport paths between work places;
The IC tag is read during conveyance by the IC tag reader, and the location and time are stored. At that time, it is determined that the position of the work has moved from the previous process to the next process, and the position of the work is managed. A work process management apparatus in a job shop type system, comprising:
JP2008173210A 2008-07-02 2008-07-02 Work process management method and device in job shop system Pending JP2010015288A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008173210A JP2010015288A (en) 2008-07-02 2008-07-02 Work process management method and device in job shop system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008173210A JP2010015288A (en) 2008-07-02 2008-07-02 Work process management method and device in job shop system

Publications (1)

Publication Number Publication Date
JP2010015288A true JP2010015288A (en) 2010-01-21

Family

ID=41701367

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008173210A Pending JP2010015288A (en) 2008-07-02 2008-07-02 Work process management method and device in job shop system

Country Status (1)

Country Link
JP (1) JP2010015288A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011165061A (en) * 2010-02-12 2011-08-25 Toshiba Corp Server for medical examination system and control program thereof
US9756158B2 (en) 2011-03-21 2017-09-05 Apple Inc. Electronic devices with convex displays
JP2021511603A (en) * 2018-01-25 2021-05-06 ビート インク Process digitization system and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000068350A (en) * 1998-08-24 2000-03-03 Mitsubishi Electric Corp Transfer apparatus for single-wafer storage cassette and transfer method
JP2006235862A (en) * 2005-02-23 2006-09-07 Toyota Motor Corp Assembly management system
JP2006302096A (en) * 2005-04-22 2006-11-02 Omron Corp Process abnormality detection system
JP2007109035A (en) * 2005-10-14 2007-04-26 Hitachi Ltd Information recording medium and process management method of object product using information recording medium
JP2007164344A (en) * 2005-12-12 2007-06-28 Fuji Electric Systems Co Ltd Product management system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000068350A (en) * 1998-08-24 2000-03-03 Mitsubishi Electric Corp Transfer apparatus for single-wafer storage cassette and transfer method
JP2006235862A (en) * 2005-02-23 2006-09-07 Toyota Motor Corp Assembly management system
JP2006302096A (en) * 2005-04-22 2006-11-02 Omron Corp Process abnormality detection system
JP2007109035A (en) * 2005-10-14 2007-04-26 Hitachi Ltd Information recording medium and process management method of object product using information recording medium
JP2007164344A (en) * 2005-12-12 2007-06-28 Fuji Electric Systems Co Ltd Product management system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011165061A (en) * 2010-02-12 2011-08-25 Toshiba Corp Server for medical examination system and control program thereof
US9756158B2 (en) 2011-03-21 2017-09-05 Apple Inc. Electronic devices with convex displays
US10348875B2 (en) 2011-03-21 2019-07-09 Apple Inc. Electronic devices with convex displays
US10735569B2 (en) 2011-03-21 2020-08-04 Apple Inc. Electronic devices with convex displays
US11394815B2 (en) 2011-03-21 2022-07-19 Apple Inc. Electronic devices with convex displays
JP2021511603A (en) * 2018-01-25 2021-05-06 ビート インク Process digitization system and method
JP7264508B2 (en) 2018-01-25 2023-04-25 ビート インク Process digitization system and method

Similar Documents

Publication Publication Date Title
US20110153065A1 (en) Picking system and picking method
JP2009075941A (en) Process management method, system, and device
JP5669921B2 (en) Location management system
CN100445913C (en) Traceability management data creation method, traceability management data creation apparatus and traceability management data creation program storage medium
JP2010083674A (en) Physical distribution management system and physical distribution management method
JP4655270B2 (en) Controlled object passage monitoring system
JP6292217B2 (en) Production line and product production method
JP5455401B2 (en) Location management system
JP2010015288A (en) Work process management method and device in job shop system
JP2014131934A (en) Physical distribution management method
CN101551659B (en) Storage monitoring system integrating wireless radio-frequency identification
JP2007109095A (en) Process management apparatus, process management system, process management method, control program, and recording medium
CN100507782C (en) Manufacturing procedure control method and system
JP2012133723A (en) Process control system and method for processed articles
JP6766833B2 (en) Production line and product production method
TWI501341B (en) System for automatically identifying positions of trays of semiconductor products and method therefor
JP2003118841A (en) Method for controlling part stock, instruction method for delivery to part dolly, and system for controlling stock
JP6659927B2 (en) Information grasp management device, terminal of information grasp management device, and program of information grasp management device
JP2008077559A (en) Tracking system and method
JP2021051543A (en) Management system and management method
JP2006026843A (en) Production management method and production system
Kürschner et al. An analysis of data-on-tag concepts in manufacturing
JP4482879B2 (en) Process information management system
CN112329900B (en) Control method and device for cleaning photoresist pipeline and computer readable storage medium
WO2023119388A1 (en) Task management system, task management device, task management method, and non-transitory computer-readable medium

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20110526

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120823

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120827

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20121018

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130423

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20130828