JPH09102056A - Management method for production data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To flexibly correspond to changes without depending on the manufacture method of products and the operation method of an equipment by writing the name of the manufacture equipment, start time and termination time of work in the ID card of the product which the manufacture equipment processes at present. SOLUTION: The product name and a manufacture process are previously written in the data write area 21 of the ID card 20. Whenever the product 10 becomes under the control of respective manufacture equipments, the names of the equipments, work start time and work termination time are sequentially and additionally written. The product name, the manufacture process, processing time, the equipments names, work start time and work termination time are automatically and successively recorded in the ID card 20 of the product 10 which is assembled and worked while it moves among the manufacture equipments. When data recorded in the ID cards 20 of the respective products are read by a radio system and the product name, work start time and termination time are picked out with the equipment as a key, the operation situations of the respective equipments can be grasped by data of a Gantt chart image.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production data management method for managing the in-process state of a product and the operating state of equipment in a discrete production system such as product assembly and processing.

[0002]

2. Description of the Related Art In a production system, in order to perform a dynamic simulation for predicting the future from the current state, it is necessary to accurately grasp which product is in which process as an initial value. For this purpose, the FROM-TO information for moving the product based on the manufacturing process of the product and the moving method between the processes, and the timing information of the actual movement from the sensor attached to the manufacturing equipment are fetched to move the product. You need a tracking system to manage.

[0003]

The tracking system described above is operated according to a program that depends on the operating method of the manufacturing facility and the manufacturing method of the product, and therefore the program is changed when these operating methods and manufacturing methods are changed. I have to do it.

On the other hand, as a method that does not depend on a program, there is a method of attaching an ID code such as a bar code to a product, attaching an ID recognition device to each manufacturing facility, and reading the product in each facility. However, this method requires data management using the ID code as a key, and also requires an ID recognition device for each manufacturing facility, resulting in a large cost.

The present invention has been made in order to solve the above problems, and can flexibly cope with changes in the operating method of manufacturing equipment and the manufacturing method of products, and it also requires complicated data management and cost reduction. It aims to provide a method of managing production data that can eliminate the fear of rising prices.

[0006]

In order to solve the above-mentioned problems, the production data management method according to claim 1 adds an ID card capable of writing data for each product to be assembled and processed. , The product name and the manufacturing process are written in advance on this ID card, and the data writing device provided in the manufacturing facility for assembling and processing makes the manufacturing facility name on the ID card of the product being processed by the manufacturing facility. ,
The work start time and the work end time are written. As a result, by reading the information on the ID card, it is possible to grasp the operating status of the equipment and the in-process status of the product.

In the production data management method according to the second aspect, an ID card capable of writing data is added to each product to be assembled and processed, and the product name and the manufacturing process are added to the ID card in advance. In addition to writing, the data writing device provided in the manufacturing facility for assembling and processing writes the manufacturing facility name, the work start time, and the work end time in the ID card of the product being processed by the manufacturing facility, and thereafter, If the product is placed under the control of a manufacturing facility that does not have a data writing device, the processing time at the current manufacturing facility is set to the work end time written on the ID card at the preceding manufacturing facility that has a data writing device. This is added to obtain the work end time at the current manufacturing facility. Thus, for a manufacturing facility without a data writing device, the work end time can be determined based on the standard processing time, and this time can be written in the ID card by the manufacturing facility having the subsequent data writing device. .

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the invention described in claims 1 and 2. In the figure, 10 is a product to be assembled, processed, etc., 20 is an individual product 1
It is an ID card attached to 0, and this ID card 20 has a data writing area 21.

On the other hand, 31 and 41 are manufacturing facilities, and the product 10 to which the above-mentioned ID card 20 is attached moves between these manufacturing facilities 31, 41, .... The manufacturing facility 31 is provided with a data writing device 32, and the ID of the product 10 under the control of the manufacturing facility 31
The card 20 is configured to write the work start time and the work end time such as processing and assembly by the equipment 31 together with the equipment name.

In the data writing area 21 of the ID card 20, the product name, manufacturing process (used equipment (used machine), processing time) and the like are written in advance as shown in the figure.
Each time 0 is placed under the control of each manufacturing facility, the facility name, the work start time, and the work end time are sequentially and additionally written.

Assuming that the manufacturing equipment 41 in FIG. 1 is not provided with the data writing device 32, the ID card 20 of the product 10 under the control of the manufacturing equipment 41 is
Cannot write data.

Therefore, in this case, the manufacturing equipment 3 of the former stage is used.
To the work end time in 1, the known processing time in the manufacturing equipment 41 (including the moving time from the manufacturing equipment 31 to the manufacturing equipment 41) is added to obtain the work end time,
It suffices if the manufacturing facility having the subsequent data writing device writes this time on the ID card 20 using the data writing device. Further, if the movement time between the equipments 31 and 41 is known, the work end time of the manufacturing equipment 31 to which the above movement time is added may be further recorded as the work start time of the manufacturing equipment 41.

As described above, the ID card 20 of the product 10 to be assembled and processed while moving between the manufacturing equipments has a product name, a manufacturing process (equipment used (machine used), processing time), The equipment name, the work start time, and the work end time will be automatically and sequentially recorded.

Therefore, if the data recorded on the ID card of each product is read out by a wireless system and the product name, the work start time and the work end time are picked up using the equipment name as a key, the data can be obtained from the Gantt chart image data. It is possible to grasp the operating status of equipment. Regarding the in-process status of products, only the work start time is recorded for a certain equipment, and the work for which the work end time has not been recorded is the product in process for that equipment. It can be judged that the difference between the two is the in-process time.
Therefore, it is suitable for performance management and real-time monitoring of the production system.

According to this embodiment, on the product 10 side, I
The D card 20 is provided, and the product name, the manufacturing process, etc. are written in advance in the data writing area 21, and the information such as the equipment name, the work start time and the work end time is entered when the manufacturing equipment is under the control. Since it only needs to be stored, it can be applied to any production equipment without depending on the manufacturing method of the product, the operating method of the production equipment, or the like.

By the way, a simulator based on a Petri net composed of a place, a transition, a token, and a timer is often used for the dynamic simulation of a production system. In this case, a place corresponds to a manufacturing facility, a transition corresponds to an operation, and a token corresponds to a moving object such as a product (part) or a carrier device.

In order to perform a dynamic simulation of a production system, as described above, it is necessary to accurately grasp which product is being processed in which process (manufacturing equipment). You need to specify which place it is in. Therefore, according to the embodiments of the invention described in claims 1 and 2, the manufacturing facility and the in-process time for each product are obtained, and the token is generated in the place on the simulator corresponding to the manufacturing facility. Then, the clock of the timer is set to create the initial state of the simulation, and the future state of production prediction or the like may be simulated from the present state.

[0018]

As described above, according to the present invention, it is possible to realize a production data tracking system capable of flexibly coping with these changes without depending on the manufacturing method of products and the operating method of equipment. Further, it becomes easy to realize a dynamic simulation system that predicts the future from the current state of the production system.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of the invention described in claims 1 and 2. FIG.

[Explanation of symbols]

 10 products 20 ID card 21 data writing area 31, 41 manufacturing equipment 32 data writing device

Claims (2)

[Claims] 1. A manufacturing process in which an ID card capable of writing data is added to each product to be assembled and processed, and the product name and manufacturing process are written in the ID card in advance, and assembly and processing are performed. A method for managing production data, characterized in that a data writing device provided in equipment writes the manufacturing equipment name, work start time, and work end time in an ID card of a product being processed by the manufacturing equipment. 2. A manufacturing process in which an ID card capable of writing data is added to each product to be assembled and processed, and the product name and manufacturing process are written in the ID card in advance, and assembly and processing are performed. The data writing device provided in the equipment writes the production equipment name, the work start time, and the work end time in the ID card of the product being processed by the production equipment, and thereafter the product does not have the data writing device. In case of entering the control of the above, the processing time in the current manufacturing facility is added to the processing end time written in the ID card in the preceding manufacturing facility equipped with the data writing device, and the working end time in the current manufacturing facility is added. A method of managing production data, characterized by: