JP3662143B2 - Manufacturing condition determination device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a manufacturing condition determination device, and more specifically, manufacturing that determines manufacturing conditions according to required specifications issued by customers for industrial materials manufactured by rolling, forging, extrusion, casting, and the like. The present invention relates to a condition determining device.
[0002]
[Prior art]
When manufacturing industrial materials, it is necessary to determine manufacturing conditions such as material composition, passing process, and manufacturing method so as to satisfy the specifications required by customers and the specifications stipulated in official manufacturing standards. A technique for determining manufacturing conditions from the above required specifications is described in, for example, Japanese Patent Application Laid-Open No. 8-335230.
In the “product quality design device” described in the above publication, product characteristics and management items are grouped in a first table for each of a plurality of uses and processing processes of the product, and quality design rules corresponding to each product characteristic and management item are set. It is summarized in the second table. For the requested product specifications, product characteristics and management items are determined from the first table, quality design rules are selected from the second table, and manufacturing conditions are determined.
[0003]
[Problems to be solved by the invention]
In the technology described in the above publication, the manufacturing conditions can be determined if the required specifications are as specified in accordance with the product standards and internal standards. The manufacturing conditions were manually set using past experience and unique know-how. In this case, the manufacturing condition varies depending on the person in charge of setting the manufacturing condition, and an inappropriate manufacturing condition may be set.
In addition, it is not impossible to incorporate the exceptional requirement specifications as described above into the first table and the second table, but in that case, the rule base is enlarged and the maintenance cost of the system is increased. There was a problem of doing.
In order to solve such problems in the conventional technology, the present invention improves the manufacturing condition determination device, and even if there are exceptional requirement specifications from customers, it is appropriate to combine past results (design examples). An object of the present invention is to provide a manufacturing condition determining apparatus that generates simple manufacturing conditions and is easy to maintain.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 has accumulated a requirement specification input section for inputting a requirement specification of a consumer, and a design example in which a past requirement specification and its manufacturing conditions are paired. A request to search for the case base based on the requested case base and the requirement specification input from the customer using the requirement specification input unit, and to extract a design case having a requirement specification similar to the requirement specification In a manufacturing condition determining apparatus, comprising: a specification matching unit; and a case registration unit for registering actual manufacturing conditions actually adopted in accordance with the requirement specifications from the customer in the case base. The requirement specification matching unit satisfies the requirement specification from the customer from the case base when the requirement specification from the customer is not satisfied by the single design case accumulated in the case base. A plurality of design cases are extracted, and the production conditions of the plurality of design cases extracted by the requirement specification matching unit are synthesized to generate a synthesis production condition that satisfies the requirement specifications from the consumer. A composite manufacturing condition generation unit, and the case registration unit generates a storage candidate case that includes the actual manufacturing conditions based on the composite manufacturing conditions and the corresponding requirement specifications, and the storage Compare the manufacturing conditions of the stored candidate cases generated by the candidate case generation unit with the manufacturing conditions of the design cases stored in the above case base, and the above design cases having the required specifications equivalent to the required specifications of the above stored candidate cases Is already in the case base, the manufacturing conditions of the existing design case equivalent to the required specifications are replaced with the manufacturing conditions of the storage candidate case, and the storage candidate case is Wherein the design case with the required specifications equivalent requirement specifications in the absence of the above case base are those comprising a comparison section for registering in the case based on the accumulation candidate case as a novel of the design case It is comprised as a manufacturing condition determination apparatus.
Further, in the above production condition determining apparatus, the synthetic manufacturing condition generating unit, to determine whether there is a conflict between the items included in the production conditions of each design case in which a plurality extracted by the required specifications matching section, each If there is a conflict between items included in the manufacturing conditions of the design example, the gist is that the above-mentioned synthetic manufacturing conditions are generated after the conflict is resolved according to a predetermined rule.
[0005]
Above SL Manufacturing condition determining device, when the required specifications from the customer is not satisfied by the design case of a single stored in the case base, a plurality of design case so as to satisfy the required specifications from the customer Extracted from the above case base. The manufacturing conditions of the plurality of extracted design examples are synthesized after the conflict is resolved when there is a conflict between items included in the manufacturing condition, and a combined manufacturing condition is generated. In addition, the above-mentioned design example having a requirement specification equivalent to the requirement specification of the above-mentioned accumulation candidate case is generated as needed by the accumulation candidate case in which the actual production conditions actually adopted and the corresponding requirement specification are paired. Is already present in the case base, the manufacturing conditions of the existing design case equivalent to the required specification are replaced with the manufacturing conditions of the storage candidate case, and the required specification equivalent to the required specification of the storage candidate case is changed. In a case where the design case possessed does not exist in the case base, the accumulation candidate case is registered in the case base as a new design case.
That is, according to the manufacturing condition determining apparatus according to claim 1, exceptional requirement specifications there from customers, even if the required specifications from customers through the design case of a single accumulated in the case base is not satisfied Thus, a plurality of past design cases are combined to generate an appropriate manufacturing condition. Therefore, it is possible to provide a stable system that is not affected by the user's experience. In addition, it is not necessary to register the design case in the case base according to the exceptional requirement specifications, so case-based maintenance becomes easy. In addition, when a new case is added to the case base, additional registration of the new case is permitted only when there is no design case having the required specifications equivalent to the new case. When there is a design case with the required specifications equivalent to the above, the manufacturing conditions of the existing case are replaced with that of the new case. This prevents the case base from becoming bloated and degrading maintainability. it can.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. The following embodiment is a specific example of the present invention, and is not of a nature that limits the technical scope of the present invention. FIG. 1 is a diagram showing a schematic configuration of an apparatus according to an embodiment of the present invention.
The manufacturing condition determining apparatus according to an embodiment of the present invention relates to an industrial material manufactured by, for example, rolling, forging, extrusion, casting, etc., and manufacturing conditions for determining manufacturing conditions according to required specifications issued by consumers. It is embodied as a determination device.
As shown in FIG. 1, the manufacturing condition determination apparatus includes a requirement specification input unit 1 for inputting a requirement specification of a customer, and a case in which design examples in which past requirement specifications and production conditions are paired are accumulated. The case base 2 is searched based on the base 2 and the requirement specification from the customer input using the requirement specification input unit 1, and a design example having a requirement specification similar to the requirement specification is extracted. A conventional apparatus in that it includes a required specification matching unit 3 and a case registration unit AD for registering actual production conditions actually employed in the case base 2 in response to the required specifications from the customer. It is the same.
On the other hand, the manufacturing condition determination device is different from the conventional device when the requirement specification matching unit 3 does not satisfy the requirement specification from the customer by a single design case stored in the case base 2. A plurality of design cases that satisfy the requirement specifications from the customer are extracted from the case base 2 and items included in the manufacturing conditions of the plurality of design cases extracted by the requirement specification matching unit 3 If there is a conflict between them, the conflict is resolved according to a predetermined rule, and then the manufacturing conditions of the plurality of extracted design examples are synthesized to generate a synthetic manufacturing condition that satisfies the required specifications from the customer. Competing resolution unit 4 (corresponding to a synthetic manufacturing condition generation unit) and a manufacturing condition display unit 5 for displaying the synthetic manufacturing conditions generated by the competitive resolution unit 4 are provided. A design case registration unit (corresponding to a storage candidate case generation unit) 6 for generating an accumulation candidate case composed of the actual production condition based on the synthetic production condition and a requirement specification corresponding to the AD, and the design case registration unit 6 is compared with the manufacturing conditions of the design cases stored in the case base, and the design case having the required specifications equivalent to the required specifications of the storage candidate cases is If the base 2 already exists, the manufacturing conditions of the existing design case equivalent to the required specification are replaced with the manufacturing conditions of the storage candidate case, and the design having the required specification equivalent to the required specification of the storage candidate case When the case does not exist in the case base 2, it includes a comparison / determination unit 7 that registers the accumulation candidate case in the case base 2 as a new design case.
[0007]
The details of the manufacturing condition determining apparatus will be described below. Here, FIG. 2 is a flowchart for explaining the operation of the manufacturing condition determining apparatus, and FIG. 3 is a diagram for explaining the conflict item resolution operation in the conflict resolution unit.
In the manufacturing condition determining apparatus, first, the required specification input from the customer is input with respect to the industrial material manufactured by, for example, rolling, forging, extrusion, casting, etc. using the required specification input unit 1 (S1).
The requirement specification from the customer input using the requirement specification input unit 1 is compared with the requirement specification of the design case stored in the case base 2 in the requirement specification matching unit 3 (S2).
The design examples stored in the case base 2 are a combination of past requirement specifications and corresponding manufacturing conditions. The past requirement specifications input using the requirement specification section 1 or accumulated in the case base 2 include, for example, a plurality of items relating to standard names of industrial materials, applications, and the like. The manufacturing conditions stored in the case base 2 in pairs with the required specifications include, for example, a plurality of items relating to components, manufacturing methods, quality, and the like.
By the way, if the required specifications from customers are as specified in accordance with product standards and internal standards, only one or a very small number of design examples that have the required specifications equivalent to the above-mentioned required specifications are received from the above customers. However, as the requirement specifications from customers are exceptional ones that do not conform to the product standards and internal standards, more design examples are It corresponds to the required specification.
In the requirement specification matching unit 3, if it is determined as a result of comparison that there is no single design case that satisfies the requirement specification from the customer in the case base 2, the requirement specification from the customer is obtained. A plurality of design cases satisfying the above are extracted from the case base 2. Whether or not the requirement specification from the customer is satisfied is determined based on whether or not the item included in the requirement specification from the customer is included in the design case stored in the case base 2, for example. Determine.
Further, the comparison between the requirement specification from the customer and the requirement specification of the design example of the case base 2 is performed based on the similarity calculation. More specifically, between each item of the requirement specification from the customer input using the requirement specification input unit 1 and each item of the requirement specification of the design case stored in the case base. The harmonic distance is calculated, and a design example having a high similarity based on the harmonic distance is extracted from the case base 2.
In addition, among the items included in the above required specifications, for example, when the standard name is an indispensable item, it is assumed that the indispensable item matches.
Only the design examples that satisfy the requirement specification of the design case 要求 the requirement specification from the customer are extracted.
[0008]
The plurality of design examples extracted by the requirement specification matching unit 3 are supplied to the conflict resolution unit 4, and in the conflict resolution unit 4, contention among items included in the manufacturing conditions of the plurality of design examples occurs. Each manufacturing condition is synthesized after being resolved according to a predetermined rule (S3).
For example, as shown in FIG. 3, from the design case (required specification X, manufacturing condition Y) stored in the case base 2, the required specification matching unit 3 uses (A, α) and (B, β) 2 When two design cases are extracted and the two design cases are supplied to the conflict resolution unit 4, the conflict resolution unit 4 first compares the manufacturing conditions of the plurality of design cases. In particular, if the demand from the customer is exceptional, there is a high possibility of competition between items included in the manufacturing conditions of each design case. If there is a conflict between items included in the manufacturing conditions of each design case, the value of the item corresponding to a design case from among the multiple design cases is selected according to a predetermined rule. , The above conflict is resolved.
In the example of FIG. 3, a design example having a requirement specification set A and a design example having a requirement specification set B are extracted as corresponding to the total set X of requirement specifications from the customer. There are interfering parts (items) in the specification set A and the requirement specification set B, and there is a conflict in the parts (items) where γ = α∩β in the corresponding set of manufacturing conditions α and β. .
The predetermined rule for resolving this conflict is that if the item in which the conflict has occurred is an item that can define an order relationship such as an inspection level, the inspection level is higher for the item. This makes it possible for the consumer to make a safe selection.
In addition, if the item in which the conflict occurs is not an item for which the order relationship can be defined or there is a conflict that completely contradicts, the item is similar to the requirement specification from the customer. A design example having a high requirement specification is preferentially selected.
In accordance with this predetermined rule, for the item γ with the competition, either the value of the manufacturing condition set α or the manufacturing condition set β is selected.
Then, after the value of either of the production conditions set α, β is selected for the item γ with the competition, the production corresponding to the required specification from the customer is made from the production condition set α∪β. An overall set Y of conditions (synthetic manufacturing conditions) is synthesized.
The synthetic manufacturing conditions generated by the conflict resolution unit 4 are displayed on the manufacturing condition display unit 5 and presented to the user (S4). At this time, if the user determines that the synthetic manufacturing conditions need to be corrected, the input device corrects the data. Then, the synthetic manufacturing conditions are transferred to the production planning system or sent as instructions to each process, and the product is manufactured (S5).
The above-mentioned synthetic manufacturing conditions adopted in actual product manufacturing or the modified synthetic manufacturing conditions (actual manufacturing conditions) can be stored as design examples in the above-described case base 2 at the discretion of the user or the like. . When it is determined by the user or the like that the new design case is stored in the case base 2 (S6), the actual manufacturing conditions are supplied to the design case registration unit 6.
In the design case registration unit 6, an accumulation candidate case in which the actual production conditions are paired with the requirement specification input from the customer is generated, and the generated accumulation candidate case is supplied to the comparison determination unit 7. Is done.
The comparison / determination unit 7 performs a matching operation between the requirement specification of the accumulation candidate case and the requirement specification of the design case already accumulated in the case base 2, and is equivalent to the requirement specification of the accumulation candidate case. It is searched whether or not design cases having the required specifications are already stored in the case base 2 (S7).
If a design example having a requirement specification equivalent to the requirement specification of the accumulation candidate case has already been accumulated in the case base 2, the manufacturing condition of the design case is replaced with the production condition of the accumulation candidate case. Therefore, the manufacturing conditions of the design example are corrected so as not to compete with the manufacturing conditions of the accumulation candidate examples. On the other hand, when the design example having the requirement specification equivalent to the requirement specification of the accumulation candidate case is not accumulated in the case base 2, the accumulation candidate case is accumulated in the case base 2 as a new design case. (S8).
As described above, in the manufacturing condition determining apparatus according to the embodiment of the present invention, there is an exceptional requirement specification from the customer, and the requirement specification from the customer is not satisfied by the single design case stored in the case base. Even in this case, a suitable manufacturing condition is generated by combining a plurality of past design cases. Therefore, it is possible to provide a stable system that is not affected by the user's experience. In addition, it is not necessary to register the design case in the case base according to the exceptional requirement specifications, so case-based maintenance becomes easy. In addition, when a new case is added to the case base, additional registration of the new case is permitted only when there is no design case having the required specifications equivalent to the new case. When there is a design case with the required specifications equivalent to the above, the manufacturing conditions of the existing case are replaced with that of the new case. This prevents the case base from becoming bloated and degrading maintainability. it can.
[0009]
【Example】
In the above embodiment, whether or not to register the actual production conditions in the case base 2 is determined by the user or the like, but is not limited to this, and the actual production conditions are automatically determined. You may make it register to the said case base 2. FIG.
The required specification input unit 1, case base 2, required specification matching unit 3, conflict resolution unit 4, manufacturing condition display unit 5, design case registration unit 6, and comparison determination unit 7 do not need to be provided in the same apparatus. The storage device corresponding to the case base 2 and the interfaces such as the required specification input unit 1 and the manufacturing condition display unit 5 may be provided separately.
[0010]
【The invention's effect】
As described above, according to the manufacturing condition determination apparatus according to claim 1 , the exceptional requirement specification is from the customer, and the requirement specification from the customer is satisfied by the single design case stored in the case base. Even if it is not performed, a suitable manufacturing condition is generated by combining a plurality of past design cases. Therefore, it is possible to provide a stable system that is not affected by the user's experience. In addition, it is not necessary to register the design case in the case base according to the exceptional requirement specifications, so case-based maintenance becomes easy. In addition, when a new case is added to the case base, additional registration of the new case is permitted only when there is no design case having the required specifications equivalent to the new case. When there is a design case with the required specifications equivalent to the above, the manufacturing conditions of the existing case are replaced with that of the new case. This prevents the case base from becoming bloated and degrading maintainability. it can.
[Brief description of the drawings]
FIG. 1 is a functional block diagram showing a schematic configuration of a manufacturing condition determining apparatus according to an embodiment of the present invention.
FIG. 2 is a flowchart for explaining the operation of the manufacturing condition determining apparatus.
FIG. 3 is a diagram for explaining conflict resolution in a conflict resolution unit included in the manufacturing condition determining apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Required specification input part 2 ... Example base 3 ... Required specification matching part 4 ... Conflict resolution part 5 ... Manufacturing condition display part 6 ... Design case registration part 7 ... Comparison determination part

Claims (1)

A requirement specification input unit for inputting a requirement specification of a consumer;
A case base in which design cases in which past requirement specifications and manufacturing conditions are paired are accumulated,
A requirement specification matching unit that searches the example base based on the requirement specification input from the customer using the requirement specification input unit and extracts a design example having a requirement specification similar to the requirement specification;
In a manufacturing condition determination apparatus comprising a case registration unit for registering the actual manufacturing conditions actually adopted in the above-mentioned case base in response to the required specifications from the customer,
When the requirement specification matching unit does not satisfy the requirement specification from the customer by the single design case accumulated in the case base, a plurality of requirements specification matching units satisfying the requirement specification from the customer from the case base. To extract design cases,
A synthetic manufacturing condition generation unit is provided for synthesizing manufacturing conditions of a plurality of design cases extracted by the required specification matching unit, and generating a synthetic manufacturing condition satisfying the required specifications from the customer, and generating the synthetic manufacturing condition Determines whether there is a conflict between items included in the manufacturing conditions of each design case extracted by the requirement specification matching unit, and there is a conflict between items included in the manufacturing conditions of each design case. In this case, the above-mentioned synthetic manufacturing conditions are generated after the conflict is resolved according to a predetermined rule.
The case registration unit generates an accumulation candidate case that includes the actual production conditions based on the synthetic production conditions and the corresponding requirement specifications, and the accumulation generated by the accumulation candidate case generation unit. When the manufacturing conditions of the candidate case and the manufacturing conditions of the design case stored in the case base are compared, and the design case having the required specification equivalent to the requirement specification of the stored candidate case already exists in the case base In the case base, the manufacturing conditions of the existing design case equivalent to the above requirement specification are replaced with the manufacturing conditions of the above storage candidate case, and the above design case having the requirement specification equivalent to the requirement specification of the above storage candidate case exists in the above case base. If not, the production conditions determined, characterized in that those comprising a comparison section for registering in the case based on the accumulation candidate case as a novel of the design case Apparatus.

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