JPH07200653A - Design information managing method - Google Patents

Abstract

PURPOSE:To easily estimate the time limit of delivery of a product and also to facilitate the production planning work the changing job of a production plan caused by a designing change and the designing progress state work by confirming the stock state of the application parts during a designing work. CONSTITUTION:A design information managing method consists primarily of a library DB 1 which manages the design data (c) on each process based on the application conditions and the serial numbers(d) of each process, a materials information DB 2 which manages the total stock of the materials corresponding to the numbers (d), and a manufacture specifications DB 3 which manages the product type numbers (b) that are shown by appending the pairs of process numbers (f). Then the requested specifications (a) are obtained from a requested specifications DB 4, and the numbers (b) are taken out of the DB 3. Then the corresponding data (c) is retrieved out of the DB 1 with the application conditions and the processes defined as keys. Meanwhile a list of materials and the stock state information (e) on the materials are retrieved out of the DB 2 and shown in a list together with the data (c).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a design information management method, and more particularly to a design information management method for CAD of mechanical products, electronic devices and electronic parts which satisfy the following conditions. 1. An ordered product that is made up of a combination of options and standard parts, and is a mass-produced product. 2. A product that has a clear correspondence between the design process and the manufacturing process.

[0002]

2. Description of the Related Art A conventional design information management method is shown in FIG.
The one in FIG. 7 is a scheme found primarily for custom electronic component design.

When the order entry h is accepted, the CAD tool group 11 is used to perform design work. In the CAD tool group 11, a tool-to-tool control mechanism called a framework 13 that can cover all product design processes is functioning. As a result, a plurality of design data j generated by the CAD tool group 11 are generated while maintaining a hierarchical relationship.
The design data j is recorded, held, and operated on the magnetic medium k or the like. After that, the design data j is input to another design support tool 12, and as a result of the operation of the design support tool 12,
Data m effective for manufacturing is generated.

Identification of the design data j and the data m is as follows.
They are identified by the label n added to the magnetic medium k storing them, the data j, the data name p added to the data m, and the like.

A part of the design data j is taken out as a manufacturing specification q and input to the material management database 14 or written in the manufacturing specification document 15. Then, it is input to the production management system 16 or the like through a route different from the design data j.

The CAD tool group 11 and the material management database 14 do not necessarily have an electronic link relationship, and non-electronic means may intervene. The logical relationship between the data held by the CAD tool group 11 and the material management database 14 is not a clear and sufficient correspondence relationship because the data decision ability of the CAD tool group 11 is not sufficient.

When utilizing design assets in the past while designing with the CAD tool group 11, after obtaining data from the material management database 14 in advance, the design data j is converted into a corresponding format. It will be converted and used. In that case, because the management method is insufficient, the command,
It is necessary to deal with it manually.

[0008]

In the conventional design information management method described above, since the relationship between the design data j and the manufacturing specification q and the operation are insufficient, when the manufacturing specification q is created from the design data j. , Manual work is required.

As a result, it is difficult to fully utilize past design assets and material management information in design work, or even when product groups are made during production planning, specification data matching work for model names However, there is a problem in that the work efficiency of the whole is inferior because extra man-hours are required.

[0010]

A design information management method according to the present invention comprises a library database for managing design data of each process along with application conditions by a serial number for each process, and an inventory quantity of members corresponding to the serial number. It includes a material information database for managing and a manufacturing specification database for managing a product model number expressed by appending the pair of the serial number and the process number, and the product model number corresponding to the product is the manufacturing specification database. From the library database by using the process number obtained from the product model number corresponding to the product as a key, and the member list corresponding to the serial number obtained from the product model number corresponding to the product and its It is characterized in that inventory status information is retrieved from the material information database.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

In one embodiment of the present invention, as shown in FIG. 1, a serial number d for each process and a library DB1 for managing the design data c are used with one key being the application condition of the design data c of each design process. And a material information DB 2 that manages the inventory quantity of the material corresponding to the serial number d, and the serial number d
And a manufacturing specification DB3 that manages a product model number b expressed by appending a set of process numbers f.

The above-mentioned library DB1 is shown in FIG. 2, the material information DB2 is shown in FIG. 3, and the manufacturing specification DB3 is shown in FIG.

At the start of designing, the required specification a of the product corresponding to the arbitrary order x is registered in the required specification DB 4 in advance. The structure of the requirement specification DB 4 is shown in FIG.

A certain k-th design step (1≤k≤n) in FIG.
Then, when designing a product corresponding to the order x, the requirement specification a is retrieved from the requirement specification DB 4. Production specification DB
The product model number b from 3 to the (k-1) th design step of the product corresponding to the order x is taken out.

Thereafter, according to the required specification a and the product design status up to the (k-1) th design step obtained from the product model number b,
The corresponding design data c from the library DB1, which is a past design asset, with the application condition of the specification and the process number f as keys
To search.

If the design data c corresponding to the key exists, the serial number d unique to the design data c is displayed in a list.

Further, a material list corresponding to the serial number d and its inventory status information e are searched from the material information DB 2,
A list is displayed together with the design data c.

Therefore, from the design data c and the stock state information e, those which meet the manufacturing conditions and the schedule conditions are selected. If it is selectable here, it means that the design work of the k-th design process is completed, and the process number f and the serial number d
Is added to the product model number b up to the (k-1) th design step to create a new model number b ', and is re-registered in the manufacturing specification DB3.

If there is no library DB1 that meets the required specification a, or the material information DB2
If there is no past design asset that can be utilized from the stock status information e, the CAD tool 5 is used to newly design one that conforms to the kth design process. As a result, new design data c'is generated.

After that, the CAD tool 5 uses the library D
A new serial number d ′ other than the serial number d already registered in B1 is added to the design data c ′.

A library DB is newly created by forming a pair corresponding to the requirement specification a held in the requirement specification DB4.
The design data c'is registered in 1. The serial number d'is registered in the material information DB 3 and the material request entry g is issued to the material ordering system 7.

With the above work, the work of the kth design process is completed, and the process number f and the serial number d'are appended to the product model number b up to the (k-1) th design process.
A new product model number b'is created and re-registered in the manufacturing specification DB3.

The above operation is repeated from the first design process to the nth design process which is the final design process. Here, it is assumed that the application conditions of this method have a clear correspondence between the design process and the manufacturing process. Therefore, according to the above method, the manufacturing specification DB 3 is registered with the required specification a,
In addition, the manufacturing model number b that finally occurs is also uniquely determined. Then, the product model number b of the manufacturing specification DB 3 is delivered to the production management system 6.

Further, when designing two products in one order, the manufacturing condition of an arbitrary jth design process (1≤j≤n) changes, so that the serial number d also changes accordingly. become. Therefore, since the value of the product model number b changes, the object to be manufactured can be easily identified.

Next, a specific example in which the above embodiment is applied to the design management of a gate array which is a semi-customized semiconductor integrated circuit will be described. FIG. 6 shows a specific example when the gate array is applied.

In the gate array, a chip upper layer, which corresponds to a wiring formed corresponding to a circuit required by a customer, is physically and circuit-wise superposed on a chip underlayer in which a portion forming a transistor is formed. This is a method that can be realized as a semi-custom product.

The above-mentioned chip underlayer has already been designed in the first design process before receiving the customer's request, and the design data c is stored in the library DB as a library of the first design process.
It is stored in 1.

There are a plurality of the above-mentioned chip underlayers, which are selected each time according to the customer's request. When the arbitrary specification x is received and the required specification a is received, first the corresponding CAD tool 5 is started up and the first design process is performed. CAD tool 5
Has the process number f inside.

The CAD tool 5 in the first design process searches the library DB1 for chip underlayers according to the required specifications a (eg, chip size, number of gates, temperature, maximum current, input / output frequency, etc.) and displays them as a list. . After that, it will be selected. The one applicable here is, for example, "NEC1.
If it exists as "00", the CAD tool 5 sets the product model name b to "$ 1 NEC10" in the manufacturing specification DB3 for the order x.
Register as "0". After that, the CAD tool 5 is finished, and the first design process is finished.

Next, a CAD tool 5 ', which is different from the CAD tool 5, is started up in order to perform the logic design and wiring design which are the second design process for the product of order x. The CAD tool 5'has a process number f'inside. The CAD tool 5 ′ retrieves the required specification a (for example, the netlist file name or the specification on the circuit) corresponding to the order x from the required specification DB 4, and the design data file 8 (for example, the netlist file) that is point-managed there ) Etc. are read.

After that, the design data file 8 is processed to design the chip upper layer, which is the second design step. As a result, new design data c'is generated.

After that, a corresponding serial number d'which is different from the serial number d uniquely corresponding to the design data c already registered in the library DB1 is added to the design data c ', and the request held in the requirement specification DB4 is added. It is newly registered in the library DB1 in association with the specification a (for example, specifications on the circuit, characteristics, etc.).

As a result of retrieving the requirement specification a corresponding to the order x from the requirement specification DB 4, when the point-managed design data file 8 does not exist, it corresponds to the order number x in the requirement specification DB 4. Library DB1 with the required specification a and the process number f ′ of the second design process as keys
Search for more relevant ones.

As a result of the search, for example, the serial number d is "E
If there is a "R1" and there is no inconvenience, the second design process is completed. Therefore, the CAD tool 5'is ended to end the second design process. At that time, the CAD tool 5'is the product model number b corresponding to the order x in the manufacturing specification DB3 is "$ 1 NEC100".
Is rewritten to "$ 1 NEC100 $ 2ER1" and re-registered in the product specification DB3.

If there is no corresponding one as a result of the search, or if there is a corresponding one as the search result, for example, the serial number d is "ER1", but it is considered to be inappropriate, the CAD tool 5 '. To start the design of the second design process.

When new design data c'is generated as a result of the design, the corresponding serial number d'which is different from the serial number d uniquely corresponding to the design data c already registered in the library DB1 is set to the design data. It is added to c ′ and is paired with the requirement specification a stored in the requirement specification DB4 and registered in the library DB1.

After that, the CAD tool 5'is terminated to finish the second design process. At that time, the CAD tool 5'requires that the product model number b corresponding to the order x in the manufacturing specification DB 3 is "$ 1 NEC100" and is "$ 1 NEC.
It is rewritten to "100 $ 2ER2" and registered in the product specification DB3.

Next, the PKG design which is the third design process is performed. In that case, a new C different from the CAD tools 5 and 5 '
Start up the AD tool 5 ". The CAD tool 5" is
It has a process number f ″ inside.

The CAD tool 5 "retrieves the required specification a (for example, PKG type, PKG external dimension, number of pins, chip size, etc.) corresponding to the order x from the required specification DB4. Next, the required specification a and the third design With the process number f ″ of the process as a key, the corresponding one is taken out from the library DB1. If there is a corresponding one, the serial number d can be obtained. When there are a plurality of serial numbers d, the material information DB 2 is searched using the process number f ″ of the third design process and the obtained serial numbers d as keys, and the stock status information e (for example, each Information on work in process at the production plant, delivery date, etc.) is retrieved.

When the stock status information e is obtained, it is sufficient to select the stock status information e from the stock status information e. Here, for example, the serial number d with "SERA01" is selected.

Thereafter, when the CAD tool 5 "is attempted to be stopped in order to end the third design process, the CAD tool 5" sets the product model number b corresponding to the order x in the manufacturing specification DB 3 to "$ 1 NEC100 $. 2ER2 ”to“ $
1 NEC100 $ 2ER2 $ 3SERA01 ”and re-register in the product specification DB3.

In the third design process, if there are two required specifications a for order x, it means that different PKGs are required.

In such a case, the order x of the manufacturing specification DB3
The product model number b corresponding to is, for example, "$ 1 NEC100 $
2ER2 $ 3SERA01 "and" $ 1 NEC100 $ 2
ER2 $ 3SERA02 ”will be registered.

The above processing is performed in all the design steps. After that, the product model number b written in the manufacturing specification DB3 is
It will be transferred to the production control system 6.

[0046]

As described above, the present invention has the following effects. 1. Since it is possible to design while checking the stock status of applicable parts at the product design stage, it becomes easy to predict the delivery date of the product. For example, it is possible to avoid in advance that the delivery will be delayed due to lack of components. 2. Since the production specification information is written in the product model number b, it becomes easy to group the product model number b into the parts. (Even if there is no B / M table, it is easy to apply group technology.) Therefore, production management / production planning becomes easy.

Further, when the production plan is changed as a result of the design change, it can be easily dealt with by judging only the model number. 3. The append state of the serial number in the product model number b represents the progress status of the design. Therefore, it is possible to easily manage the design progress for an order by searching the manufacturing specification DB.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present system.

FIG. 2 is a diagram showing a configuration example of a library DB shown in FIG. 1, in which relationships between items are shown.

FIG. 3 is a diagram showing a configuration example of a material information DB shown in FIG. 1, in which relationships among items are shown.

FIG. 4 is a diagram showing a configuration example of a manufacturing specification DB shown in FIG. 1, in which relationships among items are described.

5 is a diagram showing a configuration example of a requirement specification DB shown in FIG. 1, in which relationships between items are shown.

FIG. 6 is a block diagram showing a specific example in which the embodiment shown in FIG. 1 is applied to a semiconductor integrated circuit.

FIG. 7 is a block diagram showing a conventional design information management method.

[Explanation of symbols]

 1 Library DB 2 Material Information DB 3 Manufacturing Specification DB 4 Requirement Specification DB 5 CAD Tool 6 Production Management System 7 Material Ordering System 8 Design Data File 11 CAD Tool Group 12 Design Support Tool 13 Framework 14 Material Management Database 15 Manufacturing Specification Form 16 Production management system a Required specifications b Product model number b'Product model number c Design data c'Design data d Serial number d'Serial number e Inventory status information f Process number g Material requirement entry x Order h Order entry j Design data k Magnetic medium m Manufacturing data n Label p Data name q Manufacturing specifications

Claims (1)

[Claims] 1. A library database that manages design data of each process with application conditions and serial numbers for each process, a material information database that manages an inventory amount of materials corresponding to the serial number, and the serial number and process. A production specification database for managing a product model number expressed by appending a set of numbers, and the product model number corresponding to a product is retrieved from the production specification database and obtained from the product model number corresponding to the product. Searching the design data from the library database using the process number as a key, and searching the material information database for a list of parts corresponding to the serial number obtained from the product model number corresponding to the product and the inventory status information thereof. A characteristic design information management method.