JP3392489B2 - Manufacturing management system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] The present invention relates to a production line for vehicles and the like.
It relates to the production management system used. [0002] 2. Description of the Related Art Conventionally, in a production line of a vehicle or the like,
Improve product quality, reduce manufacturing costs and improve productivity
For the purpose of the above, production of products such as control of vehicle transport and assembly
All work related to the
Introduction of factory automation (FA) technology
The production system has been adopted. Such production
In the system, under the control of the computer, the car
Both are sequentially transported to various assembling machines, and each assembling machine sends product specifications.
Control data determined in accordance with the situation is provided. This
The target product can be
Automatically produced. [0003] In addition, for processes requiring strict control,
For example, the work performed by the assembly machine
Results are measured by sensors, etc.
Common setting values prepared for each product or each part
Is checked for a match. And, as a result of inspection,
Only the rated assembly is sent to the next process. This
Work and its monitoring work together as one
Good products will be produced stably. [0004] By the way, such a problem is solved.
In a production system, a vehicle is first thrown into a production line.
At the time of entry, ON information such as ON time and ON serial number
From the computer, and then
Performance data is measured and the vehicle is
Off time, off serial number
Off information such as
Data is stored in a work file for each vehicle. In this case, a new type of vehicle is added to the production line.
When the vehicle is first introduced, the vehicle is ready for mass production.
During, several vehicles are put on the production line as prototypes
Will be done. These prototypes include only mass production
The type of data set is supplied from the host computer.
Is not supplied by the operator.
Therefore, this kind of data was registered. And try
When a vehicle is put on the production line,
ON information such as ON time and ON serial number
Computer, but in this case
That the data already exists and that the car
On information is discarded because both are prototypes
It had been. However, even if the vehicle is a prototype
Even when these are put on the production line,
ON information such as serial number is kept as the history of the vehicle
It may be desirable. In this case, the work
Do not destroy the work result data etc. formed in the file.
Information, etc. in the work file while protecting
Construction of an effective system for projecting is desired. [0007] The present invention has been made in view of the above circumstances.
Work files while protecting work result data.
Management system that can reflect ON information in the
It aims to provide a stem. [0008] [MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
In addition, the present invention is applied to each assembly to be put into a production line.
When the assembly is put into the production line,Granted
And the management status of the assembly on the production line.
Production management information (for example, AF-ON data of the embodiment =
ON information)With the work result data in each production process
ToAs production work management dataWork file(For example,
Inspection machine data file F6 in the embodiment)System to store
System when the assembly is put into the production line
Toat leastFor the assemblyThe production management information
Or the production work including any of the work result data
Management data (for example, work data of the embodiment)Is the work
There is data to determine whether or not it is written in the file.
No judgment means(For example, data presence / absence determination means 1 in the embodiment)
When,SaidBy the data presence / absence determination means,The work file
The production work management dataJudge as written
When doneThe work result is included in the production work management data.
Is data includedWork result data to determine whether or not
Judgment means(For example, work result data determination means 2 of the embodiment)
When,The work result data is included in the production work management data.
If not included, the contents of the production work management data
To the new production work management data
Data that has been written to the work file.
Replace with industrial work management dataFirst information replacement means(Example
For example, the first information replacement unit 4 of the embodiment 4)When,The production work
When the work result data is included in the management data
InOf all production processes in the production line of the assembly
After the work is completed, the production work management data
Management information and new work result data in the production process
To create new production work management data,
The production work management data written in the work file
Replace withSecond information replacement means(For example, the second embodiment
Information replacement means 5)Manufacturing management system comprising:
Has been proposed. [0009] According to the production management system of the present invention, the assembly
Is entered into the production line,
Is activated and there is no
KanoProduction work management dataIs written or not
Is determined. In the working file,Production work management dataBook
If not, it is in normal operating condition and
At the same time as putting the assembly into the production line,Raw of the assembly
Production management informationIs formed in the work file.
Work result data is collected in the process. Meanwhile,
In the work fileProduction work management dataIs written
The work result data judgment means is activated.
AndThe production work management data includes work result data
OrIt is determined whether or not. As a result,
The work result data is not included in the production work management data
in case of,By the operation of the first information exchange means,The production
Formed by adding production management information to the contents of work management data
New production work management data is written in the work file.
Built-in production work management dataIs replaced with Ma
In addition, the work result data
ofProduction work management data includes work result data
in case of,The second information exchange means is operated, and the
After the end of all production processes on the product production line,The production
Business management data in the production management information and in the production process
New production formed by adding new work result data
If the work management data is
Industrial work management dataWill be replaced. [0010] DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is an example of a manufacturing management system according to the present invention.
An embodiment will be described with reference to FIGS. Figure
Reference numeral 1 denotes a configuration of a manufacturing management system according to an embodiment of the present invention.
It is a block diagram showing composition. This production management system
Safety devices (Supplemental Restrai
nt System: hereinafter abbreviated as SRS. SR to attach)
It is applied to the S assembly line,
It will be installed in the factory, together with the equipment for implementing the business. First, before explaining the manufacturing management system,
Now, the SRS assembly line will be described. SRS is below
It is composed of the following five types of parts. Dashboard sensor R Dashboard sensor L SRS unit Cable reel Module assembly The SRS assembling line is used to assemble the above components.
It has multiple processes for performing
Then, basically, one type of work is performed. In addition, each of the above parts
Are prepared in advance for each process corresponding to each. The vehicle to which the SRS is to be mounted (hereinafter referred to as
This kind of vehicle is called SRS specification vehicle. )
SRS to be assembled according to each specification
Is different. For example, a vehicle with a certain specification is
It is necessary to assemble an SRS that includes all eyes,
Some parts are not required for such vehicles. This SR
In the S assembly line, every time a vehicle arrives at each process,
The vehicle is identified, and the vehicle is identified based on the identification result.
The parts prepared for the process should be assembled
A determination is made as to whether or not it is. In addition, assembly parts due to differences in specifications
Instruct the difference of the goods. By such control, each vehicle
On the other hand, only the parts required by each are assembled. Each of the above parts has a serial number.
Affixed with a bar code. Each part is assembled into a vehicle
The serial number will be collected when attached.
ing. In each process, bolt tightening work, fitting
When assembly work of each part, such as joint work, is performed,
Information indicating the results of the work, such as the
It has become so. Manufacturing management system according to the present embodiment
The serial number of each part and their
Collect the work status at the time of assembly as work result data
And manage the collected work result data for each vehicle
Is what you do. As described above, as the SRS assembly line,
In this factory, first to third lines are installed.
Each vehicle brought into the factory is located on one of these lines.
SRS is put on some line, and SRS set as needed
Is attached. Next, the configuration of the manufacturing management system will be described.
You. In FIG. 1, FS1 to FS3 are first to third lines.
File servers provided for each of the
You. These file servers FS1 to FS3 are
Information for controlling the work performed by the
It has various files for storing data and the like. CT1 and CT2 are communication terminals, respectively.
ALC (Assembly) that controls the entire automobile production line
le Line Control; assembly line control)
Computer HST via a communication line. communication
Terminals CT1 and CT2 duplex the communication function
The communication terminal is provided below.
Terminal CTn. A vehicle is put on the SRS assembly line
AF-ON, which is received data about the vehicle
Data (ON information) is sent from the host computer HST
Be trusted. The AF-ON data includes the information shown in FIG.
Information. Of these information, the header part is
This is data for communication control, and the AF-ON data
Destination (in this case, the SRS assembly line) and source (this
ALC host computer). Identification
The mode that the vehicle corresponding to the AF-ON data is SR
Is it new to the S assembly line?
Or is it to be returned to the factory and put in?
This is information representing such a matter. With this identification code,
Handling of the vehicle by the SRS assembly line (new assembly
/ Adjustment, etc.). Following the identification code, the vehicle
There is a line number of the line to be put in,
Vehicle information such as lot number and frame number
Followed by The frame number consists of the series and the machine number, and the car
Information specific to the body. Also, the model code is
Data that indicates the type, color, grade, and various options
is there. The AF-ON data includes AF-ON
Serial number, AF-ON date, AF-ON time, propagation serial number, etc.
Information related to the birth of the AF-ON data of
Information that is given only when a vehicle is put into the assembly line
include. Furthermore, the SRS is included in the AF-ON data.
Symbols are included. The SRS symbol is the SRS described above.
Is a symbol indicating the specification of And this SRS symbol is
Only for mass production models
For prototype vehicles before mass production,
It is written by operation. The communication terminal CTn is transmitted in this manner.
Receiving AF-ON data. In addition, SRS assembly line
SRS assembly line
History information about the vehicle at the time is AF-OFF data
From the communication terminal CTn to the host computer HST
Sent. The work terminals WT, WT,...
One unit is arranged for each process to be performed. Each working end
WT, WT, ... in the process that each has jurisdiction
Performs the function of. Control of the work to be performed in the process under their control. This
Controls include the identification of incoming vehicles, the determination of workability,
Judgment of work contents, judgment of parts that can be assembled, and tightening work
(Electric torque control) wrench or constant
The control of the wrench is included. The work actually performed in the process under their control
Confirmation, specifically the value of the torque in the tightening work,
State of mating part after mating work, serial number of assembled parts
Etc. collection. Forming work result data based on the collected results. Whether the work was performed in a manner that satisfies the predetermined criteria
Display of judgment and judgment result. The management terminal MTn (n = 1 to 3)
One for each line, each one corresponding to each line
Manage seed files. In addition, set for each line n
As the placed terminals, the middle inspection terminal MIT, the complete inspection terminal FI
T, maintenance terminal MET, form terminal BT, adjustment terminal
ADT, retest terminal RT, and the like. N1 and N2
Each form a network, and this manufacturing management
Used as a data transmission path between each terminal device in the system
Is done. Here, the manufacturing management system of this embodiment
In the management terminal MTn, as shown in FIG.
Inspection unit data file F6 (work file) described later
Data presence / absence determining means 1 for determining the presence / absence of data in the
Whether the data is work result data such as tightening torque
Work data determination means 2 for determining whether
Information exchange for replacing AF-ON data described later in the file
Means 3. The information replacing means 3 further includes a work result
Operate separately according to the judgment result of the data judgment means 2.
First and second information exchange means 4 and 5
You. That is, in the working fileWork dataIs the work result
If it is not data, the first information exchange means 4 operates
Let me be instantlyAF-ON data to the work data
The new work data added and the work dataExchange
It can be obtained. Also, the data in the working file
Is the work result data, the second information replacement means
5 is activated, and the vehicle turns off the assembly line
WhenNew AF-ON data added to the work data
Work data and the work dataLike swapping
ing. These information replacement means 4 and 5Work data
ToWhen replacingWork dataTemporary storage
Means (not shown). Next, in this production management system,
Various files to be executed will be described. Each file server
FSn (n = 1 to 3) is a management for each line n
As the file, the ALC reception file F1 shown in FIG.
ALC transmission file F2, SRS work table F4 and
And inspection machine data file F6. Less than
Below, the files mainly involved in this embodiment are
Will be described in detail. (1) SRS work table F4 The SRS work table F4 has the SRS assembly line
Work when assembling SRS parts into a vehicle
As shown in FIG. 3, the SRS symbol, SR
S symbol content, parts table data, tightening table data
And fitting table data. Each work terminal WT has its own jurisdiction each time.
Parts in the work table F4 using the process number of the process as a key
Data, tightening data and mating data
Capture things. Tightening data and mating
The data is stored at each work terminal WT that has imported them.
Control of tightening and mating operations within the responsible process
Used for In addition, each work terminal WT includes component data,
When importing tightening data and mating data,
In F4, the area in which they are described is stored.
You. The contents stored in these areas are stored by the work terminal WT.
It is referred to when forming work data described later. (2) Inspection unit data file F6 This inspection unit data file F6 contains the SRS assembly line
Work data corresponding to each vehicle put into the car is stored.
You. These work data are stored in the ALC reception file F1.
Management terminal every time new AF-ON data is written
Created by MTn. Fig. 5 shows the format of work data.
Show the mat. As shown in the figure, the work data is the input vehicle
Of the AF-ON data
, N1 parts data, N2 tightening data, N3
It contains the mating data. Each of these items is applied to the vehicle.
Reserved to record work results and managed
Has no content when created by terminal MTn
It is blank. In these blanks, this work data
When the vehicle corresponding to the vehicle passes through each process, the work terminal WT
The work result data (part number, tightening data
Data and fitting data) are sequentially written. Further work days
The date is the date of the midterm inspection,…, the date of the complete inspection,…, the adjustment
Various inspection and adjustment processes such as retirement date, etc.
Contains items that respond. Cars for each of these items
The data collected in each process as they pass through the process
Data is written. In this inspection unit data file F6,
After the work data is ready for mass production,
In addition to the introduction of vehicles to the assembly line,
Based on information sent from the HST to the management terminal
It will be created for the first time. For prototype vehicles before mass production
On the other hand, as described above, the SRS symbol is not registered.
Inspection machine data
Data file F6. In addition, the above SRS
In addition to the symbols, the frame number specific to the vehicle
Written by manual operation. The manufacturing management system thus configured is
The operation will be described below. §1. System initialization Power on and initialization of each terminal in the SRS assembly line
Is performed, this manufacturing management system can operate.
It will be in a working state. Here, the initialization of the work terminal WT is performed.
Is performed by the work terminal WT.
The work table F4 is opened via the file server FSn.
Accessed, part data and tightening data in the table
Or the process to which the work terminal WT belongs in the fitting data
Is read out. After that, work of each process
The terminal WT transmits the read tightening data or mating data to the
Therefore, control the tightening or mating operation in the process.
You. Further, the work terminal WT receives data from the work table.
When reading, the component data of each data, tightening data or
The order in the fitting data is stored. Thereafter, the work terminal W
The part serial number and tightening torque measurement results
Or if the mating condition is sampled,
The write position on the business data is stored at the time of the above readout.
It is determined according to the ranking. That is, the working end of a process
The last WT is the third part data in the work table F4.
If the work terminal WT is a part,
The serial number collected from the server as the third part data
Incorporate in work data. For tightening data and mating data
The same applies to the case. §2. AF-ON data reception When a vehicle enters the SRS assembly line,
AF-ON data, which is the received data
Is transmitted from the computer HST to the communication terminal CTn. Communication end
When receiving the AF-ON data, the end CTn receives the data.
FSn (n)
= 1 to 3), the file server corresponding to the line number
Send AF-ON data to As a result, the received AF
-ON data is received by ALC received by the file server.
Is written to the communication file F1. §3. Work data creation On the other hand, the management terminal MTn sets the
The determination of the presence or absence of new data is constantly repeated.
Then, the management terminal MTn transmits the new AF-ON data
If found (STEP 1), the work data (Fig. 5)
It is created in the inspection unit data file F6. In this case, the inspection unit data file
First, when creating work data in F6,
The presence / absence determination means 1 is operated (STEP 2), and the inspection device
Whether any data exists in the data file F6
It is determined whether or not it is (STEP 3). And the data exists
If it is determined that there is no
Indicates that the work data is the AF-ON data and the work file.
It is created by combining the contents of the file. (S
TEP4) On the other hand, the data presence / absence determining means 1
If the existence of data is confirmed, that is, before mass production starts
Following the confirmation of the existence of the above data,
The data determination means 2 is operated (STEP 5). to this
The data in the inspection unit data file F6 is
If it is determined that the data is work result data such as
Vehicles have already begun to flow in the assembly line
Therefore, the work data is created by the second information
The operation is temporarily suspended. In this case, AF-
The ON data and the contents of the work file are
The shipment is determined at the terminal and the line goes off the assembly line.
Until the vehicle is turned off
Is combined with the work result data, and
Written in the file F6. (STEP6) On the contrary, the operation result data
Result, inspection unit data file F6Work dataButWork
Business result dataIf not, the vehicle is assembled
Introduced to the line but not yet flowing
Can be determined. Therefore, the inspection unit data
Only the SRS symbol in the data file F6 contains the first information
AF-ON data, work
Created by being synthesized with the contents of the file
Work data is written to the inspection unit data file F6
Will be rare. (STEP7)First information replacement means
4 and work data exchange in the second information exchange means 5
Huh,In particular,For example, taking the first information replacement means 4 as an example
To explain, SR in inspection unit data file F6
The S symbol is read out by the first information exchange means 4
And temporarily stored in the storage means, such as AF-ON data.
Is combined with the data in the inspection unit data file F6.
The data storage area corresponding to the vehicle is deleted. Soshi
In the deleted data storage area,
Work data is written. As a result, the work result data already collected
If there is any data, AF-
Reflect ON data in inspection unit data file F6
Can be Therefore, the prototype
Preserve the history of vehicle installation on the assembly line
Can be. §4. Production history management table issued The host computer HST sends this production management system
After transmitting the AF-ON data, throw it on the SRS assembly line.
Issue a production history management table for the vehicles to be entered. this
The manufacturing history management table shows the vehicles to be put into the SRS assembly line.
A bar code indicating the frame number is printed. This ba
The code is also printed on the assembly specifications. Host computer
The manufacturing history management table issued by Data HST
It is thrown. §5. Processing within each work process The vehicle is conveyed by the conveyor and in the SRS assembly line
Are sequentially sent to each process. In each process, vehicles arrive
Each time, the processing described below is performed. First, the vehicle works
When it arrives before the terminal WT, the bar code of the assembly specification
Is scanned by a barcode reader and
Is read and the work terminal
Display screen. However, the assembly specification is torn
In this case, read the barcode on the manufacturing history management table inside the vehicle.
Can be Next, the work terminal WT connects to the barcode reader.
Therefore, using the read frame number and the key as inspection keys
The work data in the data file F6 is searched. Then
Based on the search result, it corresponds to the SRS symbol of the work data
Read out the work table data and configure SRS for the vehicle.
It is determined whether the component to be formed should be assembled. Here, the arriving vehicle is an SRS specification vehicle.
And that work must be performed in the process.
The frame number read by the barcode reader
The work data corresponding to the number is the inspection unit data file F6
And this work data is stored in the work terminal WT.
The data is written to the work data storage area in the memory. Ma
The contents of the work data are displayed on the screen of the work terminal WT.
Is done. §6. Inspection process Vehicles that have completed the assembly of SRS parts after passing through each process
After that, it is transported to the intermediate inspection process, and the middle inspection terminal in that process
Arrive before MIT. And from the vehicle production history tube
The logical table is taken out and the work in the inspection unit data file F6 is performed.
Matching work data is searched from the
Is displayed. And work
The worker judges whether the SRS assembly work was performed normally or not.
You. If this judgment result is "Yes", the manufacturing history management table
The work data is printed on. In the case of "No", the middle inspection terminal M
IT stores the work data in the inspection unit data file F6.
Information that means "passing" as an item of the middle inspection judgment
Write. And the worker has completed the work normally
A comprehensive determination is made as to whether or not the answer is yes. The result of this judgment is
In the middle inspection judgment item of the work data in the data file F6,
Get in. Then, an intermediate inspection is performed by the management terminal MTn.
The work data of the completed vehicle is read out, and other necessary
Create AF-OFF data with history information
Write to the transmission file F2. And the AF-OFF
The data is transmitted to the host computer H by the communication terminal CTn.
Sent to ST. Vehicles that pass the intermediate inspection are completed vehicles
Introduced into the inspection process, the hand of the complete inspection terminal FIT in that process
Arrive before. And the worker checks the production history management table
Then, a comprehensive judgment is made as to whether or not the work has been completed normally. This
If a defect is found as a result of the
Information that means "passing" as an item of data
Is written. Inspection result is AF-O
Sent to the host computer HST as FF data
And the vehicle is shipped by the host computer HST.
A determination is made as to whether it is acceptable. [0045] As described above, according to the manufacturing method of the present invention,
The management system is used when the assembly is put into the production line.
In the working fileProduction work management dataJudge the presence or absence of
Means for determining the presence or absence of dataProduction work management dataIs written
When it is embedded, it is the work result dataWhether to include
OrWork result data determination means for determiningProduction work management
If the data does not include work result data,
New production work by adding production management information to the contents of the management data
Business management data created and written in the work file
Replace with production work management dataFirst information replacement means
When,When production work management data includes work result data
ToAfter the end of the entire production process,Of the production work management data
In addition, production management information and new work result data in the production process
Data and create new production work management data,
Enter the production work management data written in the work file
ReplaceSince it has the second information replacement means,
It has the following effects. Already in the working fileProduction work tube
Scientific dataIf this existsProduction work management dataTo
Without disappearingProduction management informationIs reflected in the working file
Can be done. In the work fileProduction work management
On the dataLost work result data already formed
WithoutProduction management informationIs reflected in the work file
be able to. Therefore, what
RukaProduction work management dataWhen writing
ofProduction work management dataAutomatically while holdingProduction pipe
InformationRequired to form a work file
It can reduce labor and improve work efficiency.
Wear.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of a manufacturing management system according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a relationship between various management files and terminals that handle them in the embodiment. FIG. 3 is a diagram showing a data format in a management file used in the embodiment. FIG. 4 is a diagram showing a data format in a management file used in the embodiment. FIG. 5 is a diagram showing a data format in a management file used in the embodiment. FIG. 6 is a diagram illustrating a management terminal according to the embodiment. FIG. 7 is a diagram showing a flow of processing in the management terminal of FIG. 6; [Description of Signs] 1 Data presence / absence determination means 2 Work data determination means 3 Information replacement means 4 First information replacement means 5 Second information replacement means MT1-MT3 Management terminal WT Work terminals FS1-FS3 File server F1 ALC received file F2 ALC transmission file F3 Trigger file F4 Work table F6 Inspection unit data file F7 Storage data file HST Host computer N1, N2 Network

Claims (1)

(57) [Claims 1] Each object to be put into the production line is assigned when the object to be put into the production line is given.
And the management status of the assembly on the production line.
The production management information indicating, together with the work result data in each production process, a system for storing in the working file as production operations management data, when the assemblage is inserted in the production line, at least the relative該被assemblage Production management information or the work result
And determining data existence determining means for determining whether or not the production work management data is written in the working file containing any data, by the data existence determining means, said working file
When it is determined that the production work management data is written, the work result data is included in the production work management data.
Work result data determining means for determining whether or not the production work management data includes the work result data.
If not, the contents of the production work management data
New production work management data by adding production management information
The production work created and written in the work file
First information replacement means for replacing with the work management data; and the work result data is included in the production work management data.
If the production work management data is included in the production work management data,
In addition, the production management information and new work in the production process
New production work management data by adding business result data
The production work created and written in the work file
A second information exchanging means for exchanging with the business management data .