JP2000202745A - Manufacture management system and management method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply specify a product using a specified part by separately recording a use date of a part and a manufacturing date of a product, and mutually associating these dates with each other from the relationsip between a part and a product using the part. SOLUTION: After an automobile in which a transmission is incorporated is put on the market, in the case where a product 1 using a designated part 2 is needed to be retrieved, known information of the part field-proven information related to the part 2 is input to a computer. Subsequently, according to a part forming file 13c and a product manufacturing actual result information file 13b, the production date of a product 1 in which a part of the same kind as the designated part 2 is obtained. That is, the production dates of the transmission A and the transmission C are obtained. Among the transmissions produced at a specified date, the transmissions whose production dates agree with the specified date are retrieved to specify the product.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production management system and a production management method, and more particularly to a system and method for specifying a product from parts after the product is manufactured.

[0002]

2. Description of the Related Art Conventionally, for example, in an airbag of an automobile, production management is performed by associating parts and products with respective production numbers. Then, for example, when it is necessary to treat the product due to a failure of a part after the manufacture of the product, the product is identified by searching for the product serial number from the serial number of the part.

As an example of such manufacturing control, as disclosed in, for example, Japanese Patent Application Laid-Open No. 6-8110, quality information of each part at the time of primary processing (information corresponding to the serial number of the part) and There is a system in which quality information (information corresponding to a product serial number) at the time of secondary and subsequent processing can be collated by information management means such as a computer. As disclosed in Japanese Patent Application Laid-Open No. 6-243144, there is a manufacturing management system in which barcode information is added to each component and the barcode information is used.

A bar code is sometimes used as information indicating a part number or a product number in a manufacturing management system. In such a production management system, a bar code label or the like indicating the serial number or a manufacturing lot number of the component is attached to the component, and a bar code label or the like indicating the serial number of the product is attached to the product. I have to. Then, the bar codes of both labels are read at the time of assembling the product, and the read information is stored in a computer to create a manufacturing record, which can be searched as needed.

[0005] On the other hand, except for a specific product such as an airbag, the method of directly associating a part with a product does not normally perform manufacturing control, and when it becomes necessary to specify the product from the part at a later date. From the record of product production records that record the serial number and date of manufacture of the product and the date of delivery of the specific part, the date of manufacture and serial number of the product that is considered to use the part Estimated.

[0006]

SUMMARY OF THE INVENTION Among these methods,
How to manage manufacturing by directly associating parts with products
Since it is necessary to perform assembling and the like while associating parts and products one-to-one, there is a problem that the process is complicated and the manufacturing cost is increased. Therefore, this method can be used for specific products such as airbags that require prompt response when it becomes necessary to identify products from parts after the product is manufactured, but for most other products, Adoption was postponed because of cost. For this reason, for most products, a method of estimating a product from a record of product manufacturing results and a delivery date of a specific part has been adopted.

However, since the time from when a part is delivered to when the part is actually assembled into a product differs for each part, this method is used to accurately narrow down products considered to be using the part. Was difficult. Therefore, in reality, the date and time of manufacture and the serial number of the target product must have a considerable range, and a product several times as large as the target product is to be treated.

SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and an object of the present invention is to specify a product from parts to be manufactured after the product is manufactured at a low cost by a manufacturing management system. To be able to do it more accurately.

[0009]

According to the present invention, a part performance information file including a part and its use date and time, and a product production result information file including a product and its manufacture date and time are separately formed. By using a component configuration file that records the relationship between a product and a product, the product can be specified from the component.

More specifically, a first solution taken by the present invention is to provide a parts configuration file storing a relationship between a product and parts constituting the product, and a part and a production use history based on production results. A part performance information file that collects and stores part performance information including, and a product production result information file that collects and stores product manufacturing result information including a product and a production history based on the production result, and a part performance information A first calculating means for deriving the production use date and time of the predetermined part based on the file; and a second calculating means for deriving the production date and time of the product incorporating the predetermined part based on the component configuration file and the product manufacturing result information file. And a product specifying means for specifying a product into which the predetermined component is incorporated based on the derivation results of both calculation means.

[0011] The second solution taken by the present invention is:
In the first solving means, the component result information includes a component number and a lot number, and a use start time and a use end time as a product use history.

Further, a third solution taken by the present invention is:
In the first solution, the product production record information includes a product number and a production start time and an end time of the product as a production history.

A fourth solution taken by the present invention is:
The first or second solution means, further comprising a recording means for recording replacement information of the component container storing the component at the time of manufacturing the product, wherein the component result information includes the replacement information of the component container as the production use history. It is what it was.

Further, a fifth solution taken by the present invention is:
In the fourth solution, each component container is provided with a component slip describing a component number and a lot number, and the recording means is configured to record replacement information of the component container on the component slip. The file is formed by storing the part number and lot number of the part slip and the replacement information of the parts container.

Further, a sixth solution taken by the present invention is:
The fifth solution means, further comprising a reading means for reading the part number and lot number of the parts slip and the replacement information of the parts container, wherein the parts performance information file reads information from the parts slip by the reading means and stores the information. It is to be formed.

Further, a seventh solution taken by the present invention is:
In the above-mentioned first solving means, a print display means for printing or displaying a list of products specified by the product specifying means is provided.

An eighth solution taken by the present invention is:
The manufacturing management system of the first solving means is used for manufacturing management.
The solution according to the eighth aspect, further comprising a recording step of recording the replacement information of the part as a part use history in a parts slip in which a part number and a lot number of the part are written when the product is manufactured, The component performance information file is formed by reading the component number and lot number of the component slip and the component replacement information and including the information in the component performance information.

In the first and eighth solving means, first, a part result information file including a part and its production use history is formed based on the production result (part result information file forming step). A product manufacturing result information file including the product and its production history is formed (product manufacturing result information file forming step).

Next, the date and time when the intended predetermined part was used for production is obtained by the first arithmetic means (first arithmetic step). Further, the date and time of production of the product incorporating the predetermined component is obtained by the second calculating means (second calculating step). Then, for the target product, the date of manufacture of the product obtained in the second calculation step is narrowed down to the date and time of the first calculation step by the product specifying means (product specification step).
Is specified by

Further, in the second solving means, the part record information includes the part number and the lot number, and the use start time and the use end time as the production use history. If the part number and the lot number of the target part are known, the date and time when the part was used for production (two times of use start time and use end time) can be obtained from these numbers. In the third solution, the product manufacturing result information includes the product number and the manufacturing start time and the manufacturing end time of the product as the production history. , These two times are obtained. Therefore, in the product specifying step, the product is specified from the two times for the parts and the two times for the product, respectively.

In the fourth solution, when the parts container storing the parts is replaced, replacement information such as the replacement date and time is recorded in the recording means as a production use history. Then, the replacement information is included in the component performance information, and the replacement information is used in the first calculation step. Usually, several tens to hundreds of parts are stored in the parts container, so that the replacement date and time of the parts, that is, the date and time when the parts were used, can be specified for each number.

In the fifth and ninth means,
In the recording step, the parts form provided for each container
The replacement information of the parts container is recorded (recording step). Then, a component performance information file is formed from the component number and lot number written on the component slip and the replacement information, and the first calculation step is performed based on the component performance information file.

In the sixth solving means, the parts record information file is formed by reading the part number and lot number of the parts slip and the replacement information of the parts container by the reading means.

Further, in the seventh solving means, a list of products specified by the product specifying means can be printed or displayed by the print display means.

[0025]

According to the first and eighth solutions,
Record the date and time of use of parts and the date and time of manufacture of the product separately,
Since these dates and times are associated with each other based on the relationship between the part and the product using the part, the product using the specific part can be easily specified. As described above, since the serial number of the part and the serial number of the product are not associated with each other in a one-to-one correspondence during the manufacturing process of the product, it is possible to suppress an increase in cost due to an increase in the number of man-hours, and furthermore, based on the use date and time of the component, Can be specified accurately.

According to the fourth solution, each time a component container is replaced, information such as the replacement date and time is recorded. Therefore, the use start time and the use end time of the component in the component container can be easily obtained from the time when a certain component container is replaced and the time when the next component container is replaced. Further, the time at which the component container is replaced may be recorded for each component container, and can be easily performed. Therefore, an increase in the number of work steps can be suppressed, and an increase in manufacturing cost can be prevented.

According to the fifth and ninth solutions, the replacement information of the component containers can be more easily recorded by using the component slips provided in each component container. According to the means, the replacement information of the component slip recorded on the component slip may be read by the reading means, so that the component performance information file can be formed more easily.

[0028]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a conceptual diagram showing the flow of manufacturing management in the manufacturing management system of the present embodiment, and FIG. 2 is a flowchart.

FIG. 1A shows a part of a manufacturing process of a product 1 such as a transmission of an automobile. Parts 2 used for assembling the product 1 are supplied to the production line 4 in a state of being stored in the parts box 3 by several tens to about 100 pieces, and are arranged on the shelf 6 of the assembly station 5 where the parts are assembled. ing.

For example, a transmission production line 4
However, not all transmissions of the same type flow through the line 4. For example, three types of transmissions, transmission A, transmission B, and transmission C, are alternately or irregularly arranged in accordance with a predetermined time chart. It is flowing in. Further, the parts 2 of the parts box 3 stocked on the shelf 6 are not assembled to all the transmissions A, B, and C at the assembly station 5 where the shelf 6 is provided.
And transmission C, but not transmission B.

Each component box 3 is provided with a label called a component slip 7 so as to be detachable from the component box 3. The part slip 7 shows a part number of the part 2, a production line number to be used, an assembly station number, a production lot number, and the like. FIGS. 3A and 3B illustrate two parts slips 7A and 7B. In these parts slips 7A and 7B, "FA01-08-010" is the part number a and "N", respectively.
Indicates a production line number b, "11St" indicates an assembly station number c, and "199808160023" and "199808180001" indicate a production lot number d.

In the manufacturing process of the product 1, when the parts 2 of the parts box 3 to which the parts slip of 7A has been attached are finished and the box 3 is empty, the parts slip 7A is removed from the box 3. Then, as shown in FIG. 1 (b), the time (part container replacement information) is stamped on the part slip 7A by using the part use result time stamping device (recording means) 8 (recording step). Then, the part slip 7A is put into the part slip collection box 9 as shown in FIG. Thereafter, each time the parts box 3 is emptied, the parts slip 7 is removed from the box 3 and the time is stamped and stocked in the parts slip collection box 9 sequentially.

For example, assuming that the parts box 3 on which the parts slip 7A has been pasted becomes empty at 10:54:30 on August 19, 1998, the parts slip 7A is shown in FIG. As shown, "199
8/08/19 10:54:30 "(Parts container replacement information e)
Is added. Assuming that the parts box 3 on which the parts slip 7B is pasted becomes empty at 9:20:30 am on August 20, 1998, the parts slip 7B has the following information as shown in FIG. , "199
8/08/20 09:20:30 "(Parts container replacement information e)
Is added.

Next, the part slips 7 stocked in the part slip collection box 9 are supplied to a stack reader (reading means) 10 at a predetermined time in an office as shown in FIG. The image data is read by the reader 10 as image data. And this image data
In step ST1 of FIG. 2, the visual character recognition device 11 shown in FIG. 1 (e) converts all of the information into character information, and outputs a part number a, a production line number b, an assembly station number c,
It is converted into data as information indicating the production lot number d and the use end time e.

In step ST2, a serial recording number and a use start time are added to the data of the component 2 of each box 3 formed in this way. The serial record number is determined by adding 1 to the serial record number of the immediately preceding data, and the use start time is determined to be one second after the use end time shown in the previous component slip. For example, assuming that the serial record number of the part slip 7A is 22, the data relating to the part 2 corresponding to the part slip 7B is "00023"-"FA01-08-010"-"N"-"11St"-"19980818000.
1 "-" 1998/08/19 10:54:31 "-" 1998/08/20 09:20:30 "In this example, the first" 00023 "indicates the serial number, and the second from the last "1998/08/19 10:54:31" indicates the use start time.

Then, steps ST1 and ST2 are executed for the data of all the component slips 7, and these information are put together in step ST3 to obtain the data shown in FIG.
As shown in (1), a database 13 including a part use result (part result information) file 13a is formed in the office computer 12 (first and second calculation means, product identification means) (part result information file forming step). .

The computer 12 is connected to a production management system 14 of a higher-level factory via a communication line, and is configured to be able to access a database of the production management system 14. This database contains
For various products, based on their production results,
The parent file 14a of the product manufacturing result information storing the product (product number) and its production history (manufacturing start time and manufacturing end time), and the relationship between a product and a component such as which product a certain component can be attached to (for example, (Part file parent file 14b) representing the relationship that the part 2 is attached only to the transmission A and the transmission C, but not to the transmission B.
It is included.

Of these information files 14a and 14b, necessary information is taken into the office computer 12, and the database 1 usable by the computer 12 is used.
3 is stored. As a result, a production result information file 13b for the product 1 produced at the factory is formed (product production result information file forming step), and a component configuration file 13c representing the relationship between the product 1 and the component 2 is formed. Is done.

On the other hand, for example, if it becomes necessary to search for a product 1 using predetermined parts 2 after a car incorporating the transmission 1 produced on the production line "N" comes to the market, it becomes necessary to search for the product 1 shown in FIG. In step ST4, the part 2
Of the part performance information related to the computer is input to the computer. If the predetermined part is a part corresponding to the part slip 7B and its part number a and lot number d are known, "FA01-08-010" is used as a search condition.
And "199808180001", and the part information of the corresponding part 2 is extracted (step ST5). By doing this,
The date and time when the part 2 was used for the production of the product 1 is specified (first operation step).

Next, based on the component configuration file 13c and the product manufacturing record information file 13b, the production date and time of the product 1 incorporating the same type of component as the predetermined component 2 is obtained (second operation step). That is, in the above example, the production date and time of the transmission A and the transmission C are obtained (step ST6).

Then, among the transmissions A and C produced at the date and time specified in step ST6, those whose production date and time match the date and time specified in step ST5 are searched, and a product incorporating the target part 2 is specified. (Product identification step). In other words, in the above example, from 10:54:31 am on August 19, 1998 to 9:20:30 am on August 20, 1998
By the second, transmissions A and C that have passed the eleventh station of production line "N" will be identified.

The product manufacturing record information includes the time when each transmission 1 was put into the production line "N" (manufacturing start time) and the time when assembly on the production line "N" was completed (manufacturing end time). ) And is included. Therefore,
For example, if there is the eleventh station at a position where the product 1 has flown for 30 minutes from the start point of the production line "N",
After calculating the minute offset, the serial numbers of the transmissions A and C are specified.

FIG. 5 shows a list of transmissions manufactured around that time. In this figure, f is the type of transmission, g is the serial number, h
Indicates the time when the vehicle passed the eleventh station.

As shown in this list, the transmission A with the serial number "1998080001" was issued on August 19, 1998.
Assuming that the vehicle passed the eleventh station at 10:52:00 am on the day, it can be seen from the transit time that the transmission A is not a transmission using target parts. Also, transmission B having the serial number "1998080002" passed through the eleventh station at 10:55:00 am on August 19, 1998, and the passing time satisfies the search condition. Transmission B
Since the part is not assembled, the part is excluded from the target in the second calculation step, and is not an extraction target.

Next, assuming that the transmission A having the serial number "1998080003" has passed the eleventh station at 10:58:00 am on August 19, 1998, the transmission A having the transmission using the target parts is assumed. And the transit time also satisfies the search condition, so that it is extracted as a search result. Thus, FIG.
In the list of serial numbers from "1998080003" to "1998080
The transmission A up to 057 "is extracted and listed as a target of the treatment.

On the other hand, although not shown, the production management system includes print display means for displaying the extraction result specifying the product on a computer screen or printing it from a printer. Therefore, in step ST8, the extraction results can be displayed as a list or printed.

According to the present embodiment, the part performance information file 13a including the date and time of use of the component 2 is formed separately from the product performance information file 13b including the date and time of manufacture of the product 1. The date and time of use and the date and time of manufacture of the product 1 are stored in the component configuration file 13c.
In the manufacturing process, complicated work is not required during the manufacturing process, and the product 1 using the specific part 2 can be easily and accurately identified. Can be specified.

Every time the parts container 3 is replaced, information such as the replacement date and time is recorded in the parts slip 7, and
Since the information is collectively read after a certain amount is stocked, it is only necessary to stamp on the parts slip 7 during the manufacturing process, and the operation can be easily performed. In addition, since the replacement information is input using the stack reader 10 and the visual character recognition device 11, it can be easily input.

[0050]

Other Embodiments of the Invention The present invention may be configured as follows with respect to the above embodiment.

For example, in the above embodiment, the use end time of the component 2 is recorded in the component slip 7, but it is not always necessary to record it in the component slip 7, but it is recorded in the component box 3 or another recording medium. Such a method is also possible. Further, the use start time may be recorded instead of the use end time.

Further, in the above embodiment, the parts slip 7 stamped with the use end time is stocked and read by the stack reader 10 collectively. However, each time the use of the parts 2 in each part box 3 is completed, or At each start of use, information such as the component slip 7 may be read, and the time may be input at the same time.

Further, in the above embodiment, the second operation step is executed after the first operation step, but the second operation step may be executed before the first operation step.

In the above-described embodiment, necessary information is extracted by the office computer 12 from the parent file 14a of the product production result information and the parent file 14b of the component configuration possessed by the production management system 14 of the upper factory. The information is stored in the computer 12 before the search is performed.
Instead, the search may be performed while accessing the production management system 14 without storing the information.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing a flow of manufacturing management in a manufacturing management system according to an embodiment of the present invention.

FIG. 2 is a flowchart in the manufacturing management system of FIG. 1;

FIG. 3 is a diagram showing two parts tables.

FIG. 4 is a diagram showing a state in which a use end time is stamped on the parts slip of FIG. 3;

FIG. 5 is a list showing production result information of products manufactured at a certain time.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Transmission (product) 2 Parts 3 Parts box 4 Production line 5 Assembly station 6 Shelf 7 Parts slip 8 Parts use time stamping device (recording means) 9 Parts slip collection box 10 Stack reader (reading means) 11 Visual character recognition device 12 Computer (first and second computing means, product specifying means) 13 Database 13a Parts performance information file 13b Product manufacturing performance information file 13c Part configuration file 14 Production management system 14a Parent file of product manufacturing performance information 14b Parent file of component configuration

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3C042 RH01 RJ10 5B049 BB07 CC21 CC31 DD02 EE01 EE05 EE59 FF02 FF03 FF04 5B082 EA07 EA10 9A001 FF03 JJ44 KK54 LL09

Claims (9)

[Claims] 1. A component configuration file storing a relationship between a product and components constituting the product, and component performance information obtained by collecting and storing component performance information including a part and a production use history based on the production performance Based on a file, a production record, a product production record information file that collects and stores product production record information including a product and a production history, and a component record information file, derives a production use date and time of a predetermined part. A first computing means, a second computing means for deriving a production date and time of a product in which the predetermined component is incorporated, based on the component configuration file and the product manufacturing result information file; and a deriving of the first computing means and the second computing means. A product specifying means for specifying a product into which the predetermined component is incorporated based on a result. 2. The production management system according to claim 1, wherein the part performance information includes a part number and a lot number, and a use start time and a use end time as a production use history. 3. The manufacturing management system according to claim 1, wherein the product manufacturing result information includes a product number and a product manufacturing start time and an end time as a production history. 4. A recording device for recording replacement information of a parts container storing parts at the time of manufacturing a product, wherein the parts actual information includes replacement information of the parts container as a production use history. Manufacturing management system as described. 5. Each part container is provided with a part slip on which a part number and a lot number are described, and the recording means is configured to record replacement information of the part container on the part slip. 5. The manufacturing management system according to claim 4, wherein the system is formed by storing a part number and a lot number of the part slip and replacement information of a part container. 6. A reading means for reading a part number and a lot number of a parts slip and replacement information of a parts container,
6. The manufacturing management system according to claim 5, wherein the component performance information file is formed by reading information from a component slip by a reading unit and storing the information. 7. The manufacturing management system according to claim 1, further comprising print display means for printing or displaying a list of products specified by the product specification means. 8. A part result information file forming step of collecting and storing part result information including a part and a production use history based on the production result, and a product including a product and a production history based on the production result. A product manufacturing result information file forming step of collecting and storing manufacturing result information; a first calculating step of deriving a production use date and time of a predetermined part based on the part result information; Based on the parts configuration file that stores the relationships and the product manufacturing results information file,
Second to derive the production date and time of the product in which the predetermined part is incorporated
A manufacturing management method, comprising: an operation step; and a product identification step of identifying a product into which the predetermined component is incorporated, based on a derivation result of the first operation step and the second operation step. 9. A manufacturing method for manufacturing a product, comprising: a recording step of recording replacement information of a part as a part use history on a part slip on which a part number and a lot number of the part are written; 9. The manufacturing management method according to claim 8, wherein the part number and lot number of the part slip and the part replacement information are read and included in the part performance information.