JPH06251024A - Method and device for evaluating easiness of work and treatment of article - Google Patents

Abstract

PURPOSE:To provide the method and the system which evaluate the degrees of difficulty of the work and the treatment in each of states of the life such as production, sales, use, maintenance/inspection/repair, recovery, dismantling, decomposition, recycling, conversion to harmless materials, and abandonment of an article and parts in the design stage. CONSTITUTION:Parts examination marks Ei expressing the degrees of difficulty of works and processings of parts are recognized as functions of indexes Gi expressing the degrees of difficulty of works and treatments of parts and are expressed by Ei=f (Gi), and product examination marks E expressing the degrees of difficulty of the work and the treatment of an article are recognized as functions of indexes G (=SIGMAGi) expressing the average values of parts examination marks Ei or the degrees of difficulty of the work and the treatment of the article and are expressed by E=f (g)=f (SIGMAGi), and work and treatment expenses C and Ci of an evaluation article are estimated from work and treatment expenses C', Ci', G', and Gi' of simsilar articles. The time or expenses required for works and treatments, the design structure, material, etc., are easily and quantitatively evaluated without requiring rich experiences in such form in the early stage of design development of the article and parts that anybody can understand them.

Description

Detailed Description of the Invention

[0001]

The present invention relates to the manufacturing, sale, use, maintenance / inspection / repair, collection, disassembly, disassembly, recycling, detoxification, disposal (or storage) of articles or parts for the lifetime of articles or parts. In order to reduce the time or cost required for the work and processing at each stage, factors such as the size, shape, structure or material of the work are particularly important at the stages of maintenance / inspection / repair, disassembly, disassembly and recycling. And the effect on the ease of processing are quantitatively evaluated, and the evaluator can easily perform the work and the processing by providing the evaluator with the evaluation result and the guideline for improving the ease of the work and the processing. The present invention relates to a method for accelerating the design of various articles or parts, and a device for automatically providing a guideline for improving its evaluation and easiness.

[0002]

2. Description of the Related Art Conventionally, there is a first method for evaluating whether or not work and processing at each stage of the life of an article are easy.
There was a method to give a check sheet to the designer and check whether each item is satisfied. Secondly, at the time of designing, a person skilled in designing and work, called a design review, judges the ease of work and processing of articles based on experience,
He pointed out the parts that need improvement. Thirdly, there is a method implemented by an assemblability evaluation method or a workability evaluation method when assembly and processing are handled as work types.

The first and second methods are Nikkei New Materials (NIKKEI NEW MATERIAL).
S) A contribution and the like entitled “Recommendations for Environmentally Conscious Product Design” published on pages 14 to 25 of June 10, 1991. Further, as a technique related to the third evaluation method, there are JP-A-4-69703 and JP-A-5-114003.

[0004]

[Problems to be Solved by the Invention] Products are manufactured, sold, used, maintained / inspected / repaired, recovered, disassembled, disassembled, recycled,
It is most effective that the work and treatment at each stage of the life of the article such as detoxification and disposal (or storage) are easy to carry out at the design stage of the article and incorporated into the article.

In order to build it into an article at the design stage, some kind of preliminary evaluation method is required, and further it is necessary to carry out an improved design based on the evaluation index obtained by the evaluation method.

For this purpose, some preliminary evaluation methods have been published so far as described above. However, most of the evaluation methods published so far are (1) Only at the checklist stage, the required evaluation indicators are qualitative and quantitative evaluation is not possible.

(2) Abundant experience and knowledge are required for evaluation.

(3) It is difficult to judge whether the design is good or bad only by the time or cost required for the work and processing of the obtained information.

(4) Evaluation cannot be performed unless the design is completed or approaching the end, and it is difficult to improve the design after the evaluation is completed.

(5) Only the determination of workability and processing easiness is targeted, and it is difficult to lead to design improvement after evaluation.

(6) Only workability at the time of manufacturing the article or part is considered, and workability and processing at each stage of the life of the article or part such as maintenance, inspection, repair, disassembly, disassembly, and recycling are facilitated. Can not be evaluated.

(7) Since a uniform work form at the time of manufacturing articles or parts is evaluated, the time or cost required for the work and process such as maintenance, dismantling, disassembly, etc. is complicated. It cannot be calculated.

(8) Obtaining information for improvement from the evaluation result is a work relying solely on the experience of the evaluator and is inefficient.

However, it is not applicable to the evaluation of maintenance / inspection / repair, disassembly, disassembly, and recycling.

An object of the present invention is an evaluation method which does not have these problems, namely, (1) quantitative evaluation, (2) without requiring abundant experience and knowledge, and (3) judgment of good or bad design. It has a possible index, (4) it can be evaluated even in the initial stage of design, and (5) it has cases that can be used as a reference for design improvement.
(6) Evaluate the ease of work and processing at each stage of the life of an article or part, especially maintenance / inspection / repair, dismantling, disassembly, and recycling, and (7) Complex work form such as maintenance, disassembly, and disassembly. (8) Corresponding to (8), there is provided an evaluation method having a feature of supporting improvement activities and an apparatus for automatically performing the evaluation and improvement support.

[0016]

In order to achieve the above-mentioned object, the work and processing easiness evaluation method of the present invention comprises a plurality of objects classified according to the work and processing contents of the article or part to be evaluated. The elements of basic work and processing are defined as basic elements, and in addition to the basic elements, correction factors are extracted by extracting factors for each state of goods or parts that affect the ease of work and processing of goods or parts. Define as.

An operation estimation database for estimating the contents of work and processing for an actual article or part is prepared from the work and processing information of the article or part to be evaluated given by these basic elements and correction elements. Utilizing this, detailed contents of work and processing for the article or part are derived.

A basic index indicating the degree of difficulty of each work and process is given to the work and process contents derived by the database. This basic index is the time or cost required for each work and processing, these indexes,
And the function or function expression to be compared with these. Environmental conditions of work and processing (same work and number of processes, same work and processing procedure,
Even if the same work and processing capacity) changes, it is desirable to use one whose comparison value does not change much.

Further, an article or a part having a standard condition for the article or the part is defined, and the work or the processing content of the article or the part, the time or the cost required for the work or the processing of the article or the part obtained by the function or the function formula. If the time or cost required for the work or treatment of an article or part having a standard condition or the index or these index increases more than these indexes, the article or part showing the difficulty of the work or treatment of the article or part. By calculating the workability and processing easiness index by a function or a function formula that decreases or increases from a predetermined value, the workability and processing easiness index of the article or part is calculated.

In calculating the easiness index of work and processing of articles or parts, a reference route (single or plural) under the same environmental conditions as the evaluation object, for example, "manufacturing → selling → use → collecting → disassembling → manufacturing" The sum of the time or cost required for work and processing based on goods or parts, and the time or cost required for work and processing including the addition of "regeneration, etc." to the route as a product to be evaluated, such as the standard route. It is desirable to calculate the workability and processing easiness index of the evaluation article or part by comparing with the value and using a function formula or function that decreases or increases the value with little change in the comparison value even if the environmental condition changes.

In order to evaluate the workability and processing easiness of an article, which is an assembly of parts, the time or cost and easiness required for the work and processing of each of one or more parts constituting the evaluation article are evaluated. Calculate the index, and the total time or cost required for the work and processing of each part calculated becomes the time or cost required for the work and processing of the whole article, and the total value of this time or cost is the same as the evaluation article. An index of workability and workability of an article indicating the difficulty level of the work and processing of the article as a whole when the time required for the work and the processing of a part having a reference state under the work and processing environmental conditions is increased from the total value. Is calculated by a function or a function formula that decreases or increases from a predetermined value, thereby deriving an index of easiness of work and processing of the article. Further, regarding the workability and processing easiness index of the article, the workability and processing easiness index for each of the one or more parts constituting the evaluation article is calculated by the above method, and the workability and processing easiness index of the calculated one or more parts is calculated. It is also possible to evaluate quickly and easily by calculating the workability and processing easiness index of the article based on a function formula or function for obtaining an average value of the workability and processing easiness index.

Then, the calculation of the time or cost required for the work and processing of the article or part to be evaluated is compared with the actual value of the time or cost required for the work and processing of the existing article or part similar to the article or part. Therefore, the time or cost required for the work and processing of the article or part to be evaluated will be more accurate, and existing goods or parts similar to the workability and processing index of the article or part to be evaluated will be improved. By using a function or a function formula for comparing the workability and processing easiness indexes, the effect at the time of improving the article or part can be clearly expressed, and the practicality of the evaluation result is further enhanced.

Further, it is judged from the workability and processability index calculated by the above method whether the workability or the workability of the article or part to be evaluated is good or bad, and the result and the analysis database are estimated. It is possible to provide a guideline for design improvement by automatically searching the improvement case database from the work content and displaying one or more cases having a large improvement effect.

Further, it is possible for the designer to register the improvement case by himself in the improvement case database, and it is possible to accumulate the know-how of the designer by strengthening the improvement case database.

The workability and processing easiness evaluation apparatus of the present invention configured to carry out the above method comprises an input device, a storage device, a computing device, and a display / output device, and the input device is an object to be evaluated. An article or a part is provided with a function of applying at least one basic element suitable for the work and processing and a correction element if necessary, and the storage device is an article provided by an input device. Or input data such as basic elements for parts, analysis database, improvement case database, work and processing contents for each article or part estimated by input data and analysis database, time or cost, easy work and processing of article or part Equipped with a function or function formula to calculate the sex index, and a function to store the evaluation calculation result The computing device has a function of estimating work and processing contents for an article or part based on the contents of the storage device, and an evaluation target based on the estimated work and processing contents for the article or part. Which has a function of calculating an index representing the difficulty level of the work and processing of the article or part,
The display / output device displays and outputs input data, a time value or cost required for work and processing calculated by the arithmetic device, workability index of articles or parts.

[0026]

According to the above-described evaluation method of the present invention, it is necessary that the work and the processing for the maintenance / inspection / repair, dismantling, disassembly, and recycling of articles or parts are easy. It is expressed as a workability and processability index based on time or cost.

The basic element and the correction element described above do not require special skill, investigation, experiment, etc., and can be easily extracted from the description content of the design drawing or the article or part itself.

Then, the input information such as the extracted basic elements and correction elements and the work and processing content estimated by the analysis database used in this evaluation method can be calculated by simple calculation (for example, deduction method, addition method or indexing method). By calculating a total or an average value, the workability and processing easiness of the article or part to be evaluated can be represented by an index.

When the above basic index is corrected by the correction index,
More precise evaluation is possible.

By applying the above-described evaluation method to an article which is an assembly of parts, the workability and treatment of the article as a whole can be expressed as an index.

By displaying the improvement cases extracted from the improvement case database, it is possible to contribute to the design improvement, and by incorporating the improvement case database, the know-how element of the design is incorporated into this evaluation method. It is possible.

Further, according to the apparatus of the present invention, the evaluation element (basic element, correction element, etc.) of the article or part can be input by the input device, and the evaluation element, the analysis database, and the improvement example can be stored by the storage device. Database,
It is possible to store functions, functional expressions, etc., and to perform work of parts and estimation of processing operation by an arithmetic unit,
It is possible to calculate an index that represents the difficulty level of work and processing as a part, and calculate an index that represents the difficulty level of work and processing of an entire article based on the index that represents the difficulty level of work and processing of a part. Since the calculation result can be displayed by the display / output device, the method of the present invention can be performed quickly and accurately, which is suitable for carrying out the method of the present invention.

[0033]

【Example】

Example 1 In the following, manufacturing, sales, use, maintenance / inspection / repair, collection, dismantling, disassembly, recycling, detoxification, disposal (or storage) of articles targeted by the present invention and each work type The outline will be described with reference to FIG.

Manufacture 1: In manufacturing 1, manufacturing work (eg, assembly work, processing work, inspection work, etc.) and manufacturing process (eg, purchase of materials, parts, electric power, fuel, etc., processing using chemical reaction, etc.) Then, the article is manufactured.

Sale 2: The manufactured goods are sold in Sale 2 including distribution channels (for example, transportation work, display work,
It is sold after undergoing inspection work, etc.) and sales processing (for example, purchasing materials, electric power, fuel, etc.).

Use 3: Use work (eg control work, adjustment work, placement work, etc.) and use processing (eg purchase of materials, electric power, fuel, etc., processing using chemical reaction purchased by the user) , Etc. are applied and used. The article that has finished use 3 may be transferred to another user and returned to use 3 again.

Maintenance / inspection / repair 4: Maintenance / inspection / repair work (eg inspection work, adjustment work, replacement work, etc.) and maintenance / inspection / repair processing (eg material) , Purchase of electric power, fuel, etc., treatment using chemical reaction, etc.) is performed and maintenance / inspection / repair may be performed. In this case, when a part or article to be exchanged is generated, a collecting operation and a collecting process are performed in the collecting 5.

Collecting 5: The goods for which the mission of use 3 has been completed are collected in collecting 5 (for example, transportation work, sorting work of goods, collecting work of chemical substances, etc.) and collection processing (for example, purchase of electric power, fuel, etc., Receive processing using chemical reaction, etc.). There are several routes for the collected articles depending on the type of the article, such as a route to return to the manufacturing 1 as it is, a route to proceed to the dismantling 6 for separating materials, and a route to the recycling 8 as it is.

Dismantling 6: Dismantled items (such as dismantling work, equipment operating work, sorting work of parts and subassemblies, sorting work of articles, etc.) and dismantling processing (eg power, fuel, etc.) Purchase, decomposition processing using chemical reaction,
Etc.) is applied to form parts or subassemblies. Parts or subassemblies take several routes depending on their type.
There are a route for returning to the manufacturing 1 as it is, a route for directly discarding 10, a route for detoxifying 9 for harmful materials, and a route for recycling 8.

Disassembling 7: Disassembling work of the article advanced to disassembling 7 (for example, disassembling work, equipment operating work, sorting work of parts and subassemblies, sorting work of articles, etc.) and disassembling treatment (for example, electric power, fuel etc. Purchase, decomposition processing using chemical reaction,
Etc.) is applied to form parts or subassemblies. Parts or subassemblies take several routes depending on their type.
There are a route for returning to the manufacturing 1 as it is, a route for directly discarding 10, a route for detoxifying 9 for harmful materials, and a route for recycling 8.

Recycling 8: The parts or subassemblies that have advanced to recycling 8 are recycled (for example, equipment operation,
Etc.) and recycling process (eg purchase of electricity, fuel, etc.,
However, in this case, it does not always return to the original production 1, but may proceed to another production and become another article. Further, it is possible to consider a route that goes to the disposal 10 without returning to the production 1 and a route that goes to the detoxification 9 in the case of a harmful material.

Detoxification 9: Parts or subassemblies that have proceeded to detoxification 9 are detoxified work (for example, equipment operation work) and detoxification processing (for example, purchase of electric power, fuel, etc., harmless using chemical reaction). , Etc.) and proceed to some routes. A route that directly returns to manufacturing 1, a route that proceeds to disposal 10, a route that proceeds to recycling 8 are conceivable.

Disposal 10: Items, parts or subassemblies that have advanced to Disposal 10 are disposed of (eg, transportation, equipment operation, incineration, etc.) and disposed of (eg, purchase of electric power, fuel, etc., chemical reaction). Waste treatment, reuse of heat energy obtained by incineration, etc.).

As an example of the present invention, a method for evaluating the decomposition of an article will be described.

FIG. 2 shows a basic flow of the design of an article or part and the evaluation calculation. In the concept design 11, a concept design of an article or a part is performed. At this stage, evaluation elements such as basic elements are extracted from the conceptual design drawing or the actual article or part by the evaluation element extraction 12, and the evaluation elements are input to the computer system equipped with the evaluation program by the evaluation element input 13. The input data can be stored in the external storage device 14. The automatic calculation 15 exchanges information with the storage device 16 storing the evaluation information to perform the automatic calculation, and the evaluation result output 17 outputs the display of the evaluation result and the improvement case. Based on this, the evaluation result determination 18 determines the necessity of design improvement, and when the design improvement is necessary, the design improvement 19 performs the design improvement, and the effective improvement case is added to the improvement case information. . Further, when the design improvement is completed, the process proceeds to the detailed design 20. Even after proceeding to the detailed design 20, the evaluation element extraction 12, the evaluation element input 13,
The automatic calculation 15, the evaluation result output 17, the evaluation result determination 18 may be performed, and the design improvement 19 may be performed.

FIG. 3 shows a computer system equipped with the evaluation program according to the present invention. The hardware of this computer system stores an input device such as a pen input board 21 for inputting evaluation elements, a keyboard 22 or a mouse 23, an arithmetic unit 24 for calculation, an evaluation program or basic data, input data and an arithmetic result. Storage device 16, printer 25 or display 26 for displaying calculation results, and external storage device 1 for storing evaluation results
It is composed of 4 etc.

The configuration of software installed in this hardware is as follows. First, as basic data to be stored in the storage device 16, a basic element (decomposition operation) X described with reference to FIG. 4 and a deduction εx as a basic index, and names, symbols, numerical values, etc. given to these, and FIG. The correction elements Y and Yn described below, the correction coefficient α as a correction index, and the names, symbols, and numerical values given to the correction elements Y, Yn, and each process of the evaluation process described with reference to FIG. Basic elements of evaluation order j of (disassembly operation)
Input of data Xij, Ynij, etc. for each item, calculation of the component decomposability demerit ei by correcting the basic demerit εxij corresponding to the input data with the correction coefficient αnij, component disassembly work and disassembly processing using the component degradable demerit ei Of parts disassemblability score Ei = 100-ei as an index of all parts disassemblability score Ei
Calculate the degradability score E of the article as an index of degradability of the article, disassembling work cost w of the article or disassembling work time w
T, and decomposition processing cost pC or decomposition processing time pT
Calculation, displaying the results on the display 26, and outputting the results by the printer 25, the external storage device 14
Is a program that stores data in.

An example of the contents of the basic element X in which the disassembling operations of FIG. 4 are classified is shown. Example 1 is an upward movement. I will omit the following,
These basic elements X can be extracted from the information, articles, and parts described in the design drawing in which a predetermined disassembly operation is defined, and the disassembly operation is applied to the basic element X as in this example.

The name of the basic element X is described in the first column of FIG. The number of basic elements X can be large. The higher the number of basic elements, the higher the accuracy, but the more difficult it is to use. Conversely, the smaller the number, the easier the evaluation process but the lower the accuracy. Not limited to disassembly, assembly,
Also in the case of processing, actually about 20 is the best condition.

Symbols corresponding to the respective basic elements X are described in the second column of FIG. Here, the symbol is determined as, for example, “↑” for upward movement or “→” for lateral movement so that the corresponding basic element X can be easily associated with it. Figure 4
In the third column of, the basic deduction εx given to each basic element X
An example of the value of is described. In this embodiment, the upward movement “↑” that is most easily decomposed is taken as the “reference element Xo”, and the reference deduction εxo (X of the basic deduction εx as the reference index A given to this is taken.
Is set to 0, and the other basic elements X become more difficult to decompose than the "reference element Xo", the more the "decomposition number and the decomposition means, for example, the conditions of the decomposition equipment to be used, that is, the decomposition environmental conditions. As the disassembling cost Cx for each basic element X becomes larger than the disassembling cost Cxo of the reference element Xo as shown in the fourth column when the above are aligned.
Is a functional relation such that is greater than 0, that is,

[0051]

[Equation 1]

Is determined in advance. However, (Equation 1) a
1 and a2 are constants and have a1 = a2Cxo relationship.

As an embodiment different from this embodiment, the decomposition time Tx or the index Ix thereof can be used instead of the decomposition cost Cx. Further, the formula of the basic demerit εx includes the following (Equations 2-4) in which the tendency of increase / decrease of εx is different with respect to the increase of Cx.

[0054]

[Equation 2]

[0055]

[Equation 3]

[0056]

[Equation 4]

Further, instead of the basic deduction εx, the basic coefficient ε'x
, And the following (Equations 5 and 6) or the like that is larger or smaller than a predetermined value (Example 1) may be used.

[0058]

[Equation 5]

[0059]

[Equation 6]

However, in (Equations 2 to 4), a3, a
4, a5, b1, b2, c1, c2, d1, d2 and β are constants. By properly selecting these constants, it is possible to change the tendency of the increase or decrease of the basic index with respect to the increase of the cost of the basic element or the required time.

FIG. 5 shows an example of the correction element Y. Correction element Y
Examples of the material include the material m of the component, the size l, and the like.

For each of these correction elements (m, l, ...), a relatively simple one is selected and the correction reference (mo, lo, ...) Is defined. Alternatively, it is divided into a plurality of n pieces, which can be specified by extracting from the information, articles, and parts shown in the design drawings, and are items that affect the ease of disassembling parts other than the basic elements. . The correction factor Y, which has a correction coefficient previously described as a correction index indicating the degree of influence, has a decomposition cost Cxyn of each state divided into n when the production environment conditions are aligned.
Is larger than the decomposition cost of the correction standard (Cxyn = Cy), the correction coefficient αn becomes proportionally larger than 1, and αn = (Cxyn / Cxyo) y mean ………… It is determined that the average for y = (Cxyn / Cy) y mean. Therefore, in addition to the correction coefficient αn being larger than 1, the correction coefficient α is set for the correction element whose addition causes the decomposition cost Cxyn to become smaller than the decomposition reference decomposition cost (Cxyn = Cy).
There are some in which n is smaller than 1.

In this embodiment, Cyxo = Cy, but in addition, Cyxn = Cy, [Cxyn] yn mean = Cy, and so on.
Further, the disassembly cost Cxyn, Cxyo instead of the disassembly time Txyn,
It is also possible to take Txyo and these indices Ixyn and Ixyo.

In this way, the component disassemblability rating Ei, which finally represents the disassemblability of the component, is obtained, the details of which will be described below.

First, in the part reference b of the part i, the basic element representing the disassembly operation of the part i is one reference element Xo, the correction element is a predetermined size lb, and the production environment conditions are the same as those of the part i. To do. The decomposition cost Cbi is obtained from FIGS. 4 and 5.

Next, the basic element X for each disassembly order j of the part i
ij and the correction element Ynij decomposition cost Cxynij are obtained from FIGS. 4 and 5. Hereinafter, Cxynij is abbreviated as Cij.

Here, ΣCij obtained by adding Cij in the order of j is the component disassembly cost Ci. That is, Ci = ΣCij When the component disassembly cost Ci exceeds the component-based disassembly cost Cbi, the component disassembling rating Ei of the part is set to a predetermined value (1
00), a functional expression decreasing or increasing, Ei = 100 ± ei = 100 ± gi (Ci) = f2 (Ci).

However, ei = gi (Ci) is a component demerit point that increases when Ci exceeds Cbi. Where ei
Substituting the previously determined εx = f1 (Cx) and αn = [Cxyn / Cx] x mean into the equation, ei = g1 (ΣCij) = g1 (ΣCxynij) = g1 [Σ (αnij · Cxij) = g1 { Σ [αnij · f1 ′ (εxij)]} = g2 (αnij · εxij). However, Cxyn / Cx≈ (Cxyn / Cx) x mean = αn, and f1 ′ is an inverse function of f1.

As a result, Ei = 100 ± g2 (αnij ·
εxij) and using this equation, the basic deduction εxij and the correction coefficient αnij corresponding to the basic element Xij and the correction element Yij
Can be calculated.

Further, Ei = 100 ± g2 (αnij · εxi
Ci can be obtained by substituting Ei obtained from j) into Ei of Ei = f2 (Ci).

This is convenient because Ei and Ci can be calculated in a simple diagram in which data such as Cx and Cxyn in FIGS. 4 and 5 are not entered.

Instead of the above decomposition costs Cbi and Cxynij, the decomposition times Tbi and Txynij and their indexes Ibi and Ixynij can be used. Further, instead of the component deduction ei, the component coefficient ei 'is taken, and the component disassembling rating Ei is Ei = 100ei'.
Can also be However, ei '= gi' (Ci) is a component coefficient that increases or decreases as Ci increases more than Cbi.

In this way, the parts disassembling score Ei and the parts disassembling cost Ci are obtained for all parts, and then the product disassembling score E and the disassembling cost C are obtained from these values.

That is, C = 100 ± e = 100 ± g3
It is calculated by (C) = f3 (C).

However, when e = g3 (C), C = ΣCi is Σ
It is a product demerit that increases and decreases as it increases from Cbi.

Here, in the equation of E, Ei = f2 obtained previously
Substituting (Ci) gives E = f3 (C) = f3 (ΣCi) = f3 {Σ [f2 ′ (Ei)]} = f4 (Ei). However, f2 'is an inverse function of f2.

Instead of the above decomposition costs C, Ci, Cbi, the decomposition times T, Ti, Tbi and their indexes I, Ii, Ibi can be taken. Further, instead of the product deduction e, the product coefficient e ′ may be taken and E = 100e ′. However, e ′ = g3 (C) is a product coefficient that increases or decreases as C increases from ΣCbi.

In this way, Ei is an index showing how easily the part i is decomposed, whereas the product decomposability score is an index showing how easily the entire product is decomposed.
Here, the approximate expression of f4 (Ei) is (ΣEi) / N, so

[0079]

[Equation 7]

Alternatively, an approximate value may be used. However, N is the number of disassembled parts.

When the disassembling costs C and Ci of the products and parts to be evaluated and the disassembling time T and Ti are calculated,
If the disassembling costs C'and Ci 'of the existing products and parts similar to the above-mentioned products and parts, and the actual values T'and Ti' of disassembling time are known, the disassembling score of the product and parts to be evaluated The relational expressions between the disintegration scores E ′, Ei ′ of E, Ei and similar existing products and parts and C, Ci, C ′, Ci ′ are modified as follows.

[0082]

[Equation 8]

∴Ci = Ci'f5 (Ei, Ei ') Since it is a comparison with similar parts, it is assumed that the functional expression and constant are the same, and f5
Derive.

[0084]

[Equation 9]

∴C = C'f6 (E, E ') Since it is a comparison with similar products, it is assumed that the functional formula and constants are the same and f6
Derive.

The above two equations for obtaining C and Ci are the decomposition costs Cx, Cxyn and f2 ', f3' of FIGS. 4 and 5 in various work environments and processing environments required by the above-mentioned function described above.
It is very convenient because it does not require a lot of data such as constant values of.

Ci = ΣCij ... Cij is obtained from FIG.

C = ΣCi Ci = f2 '(Ei) C = f3' (E) Instead of the above decomposition costs C, Ci, C ', Ci', decomposition times T, Ti, T ', Ti' and these Index I, Ii, I ',
You can also take Ii '.

FIG. 6 shows an output example of the evaluation result. The upper diagram of FIG. 6 shows the evaluation result of the evaluation target article, and the lower diagram of FIG. 6 shows the evaluation result of each evaluation target component. As can be seen from the lower diagram of FIG. 6, the evaluation results are in the order of poor grading, which is an index of workability and processing of parts (the index of work and processing difficulty is large, and workability and processing are difficult). It has a display function. Also, for each basic element extracted from the work and processing contents of each part,
By providing the function of displaying the index indicating the degree of difficulty of the work and processing of the part in descending order, it is possible to indicate to the evaluator a part that needs more design improvement for each part and for each work and processing content. It is possible.

In order to show to the evaluator the degree of improvement in workability and processability of the article or part before the improvement and the article or part after the improvement, the time or cost required for the operation and the process should be measured before and after the improvement. On the other hand, it has a function of displaying a reduction rate indicating how much the reduction has been made.

FIG. 7 shows a display example of design improvement cases for ease of work and processing, and FIG. 8 shows a method of searching for design improvement cases. This example shows the case where the analysis is performed with four screws: basic element: “screw rotation”, “lateral movement”, one flat plate, basic element: “lateral movement”, one flat plate, basic element: “upward movement”.

In displaying the improvement example, the work and processing contents of the article or part are estimated from the combination of the basic element and the correction element extracted by the evaluator, and the construction of the article or part requiring the work and processing is estimated. At least one is estimated. Then, for each of the estimated configurations of the article or part, at least one configuration example of the article or part having the same function as the configuration and easier in work and processing than the configuration is displayed as an improvement example. It has a function. Here, in estimating the configuration of an article or part that requires work and processing estimated from the basic elements and in searching for improvement cases for the estimated configuration, they are prepared in advance and stored in a storage device or an external storage device. The improved case database will be used.

In the improvement example of FIG. 7, the component structure before the improvement is the “screw rotation / lateral movement” operation of the four screws (in the case of screws, it can be estimated that the screws are the basic elements “screw rotation”). And two parts (in the case of parts other than screws, it is not possible to estimate what kind of form the part is from input information such as basic elements), the "lateral movement" operation and the "upward movement" operation Since the work and processing have been completed, the component configuration as shown in the upper diagram of FIG. 7 is estimated. When there are two or more estimated parts configurations for the same analysis content, the evaluator has a function of selecting the one that is closest to the actual design content.

As shown in FIG. 8, with respect to the estimated or selected parts configuration, the cause of increasing the index indicating the difficulty level of the work and the processing is estimated by the improvement case database as a problem, and this problem is solved. Search for improvement measures against the improvement case database. Further, it has been found that it is effective to reduce the number of parts, which is always considered as an extraction condition of the improvement plan, to reduce the index indicating the difficulty level of work and processing.

Next, an improved case is searched from the improved case database according to the searched countermeasure plan, and the improved component structure is output.

The improved case is a structure of an article or a part which has a function similar to that of the article or the part structure estimated from the analysis result or selected by the evaluator, but which is easier to work and process than the article or the part structure. Will have. A display example of the improvement example is shown in the lower diagram of FIG. 7. In this example, two parts fastened with four screws can be combined by fitting in a shape that takes workability at the time of removal into consideration, so that the workability and processing of articles or parts can be improved. Shows. In addition, even in the case of two or more improvement cases such as the estimated component configuration, such an improvement case can be sequentially displayed so that the evaluator can select the optimum improvement case.

An index indicating the degree of difficulty of the work or treatment of the article or part before improvement is calculated by indicating the basic elements required for the work or treatment of the article or part of the improvement example and calculating the degree of difficulty. It also has a function to show how much the index indicating the difficulty level of the work of the article or part can be reduced before and after the improvement.

Further, as for the improvement cases, those having the same function as the article or part configuration based on the article or part configuration estimated by the analysis result of the work content of the article or part before the improvement or selected by the evaluator. Is displayed, but in that case, it is also possible to make it easier for the evaluator to improve the design by displaying the advantages and disadvantages when changing to the improved case.

However, in some cases, the estimated configuration contents of articles or parts are not prepared for all combinations of the basic elements, and similarly, improvement examples are not always prepared, and the types of products are not always provided. Therefore, it is desirable that the improvement case database can be updated at any time because there are some cases where the improvement cases are appropriate or not. Therefore, the improvement case database has a function that can be added, deleted, and changed at any time. It is possible for the evaluator to add the improvement case database to the improvement case database and accumulate the know-how of the user in this improvement case database. Also, by incorporating the improvement case database of other users, a more effective improvement case database can be created. It is also possible to build. For example, by incorporating the evaluation and improvement case display function of the present invention in the CAD system used by the designer, the designer can combine the designed drawing and the evaluation result and perform registration as an improvement case without feeling uncomfortable. It is possible.

FIG. 9 shows the operation by the computer system.

In step 1, "the evaluation target article is represented by a combination of basic elements for the work and processing of each work type, and each basic element is corrected by a correction element as necessary". However, if there is no suitable symbol, select the symbol of the basic element with the most similar content.

In step 2, "a symbol representing a basic element of work and processing of each type of work, a symbol representing a correction element, a numerical value, etc. are input to the computer" for each part.

If the above operation is carried out for all the parts constituting the article to be evaluated, the computer automatically calculates the score of each part and the article, the work cost or work time, and the treatment cost or all or part of the treatment time. Then, the result is displayed on the display unit and, if necessary, the result is output to the printer.

The basic element and the correction element are input as input data for each part. The input method is as follows: (1) Direct input from the keyboard.

(2) A method of displaying basic elements and correction elements on the display, and selecting and inputting the elements there by moving the mouse or the cursor.

(3) A method of assigning each symbol of the basic element and the correction element to each key of the keyboard in advance and inputting by tapping the key.

(4) A method of preparing and inputting a dedicated input device (tablet or the like).

Etc. are conceivable. The input method of (1) is convenient when the initials of the names of the basic element and the correction element are used as symbols and expressed in alphabets.
The input methods (3) and (4) are convenient when it is difficult to express them in alphabets or when the operator is not familiar with keyboard operation.

Second Embodiment In the first embodiment, each basic element, correction element, etc. has a basic deduction εx and a correction coefficient αn, and those values are substituted for the basic element, correction element, etc. input by the evaluator. By doing so, easiness of work and processing was sought. On the other hand, there is also a method of determining the workability and processing of articles or parts from the given basic elements and correction elements by the following method.

FIG. 2 is a schematic diagram of the life of the article to which the present invention is applied and the types of work described with reference to FIG.
The basic flow of designing and evaluating calculation of the article or part described with reference to FIG. 3 and the computer system equipped with the evaluation program according to the present invention described with reference to FIG. 3 are common to this embodiment.

However, the configuration of software installed in the hardware of FIG. 3 is as follows. Storage device 16
The contents stored in are the information such as the names and numerical values given to the articles or parts to be evaluated, analysis data such as work and processing elements corresponding to those work and processing contents,
And an analysis database for estimating the work and processing contents for the article or part from these analysis data, the work and processing contents estimated by the analysis database, a basic index indicating the degree of difficulty of the work and processing contents, and an improvement example Database, a function of inputting / displaying / adding / deleting / correcting the extracted basic elements and the like necessary at each processing stage of the evaluation process shown in FIG. 14, a function of outputting an evaluation result to the printer 25 or the display 26, It is a program that has a function to search and display improvement cases and a function to add improvement cases to the improvement case database.

FIG. 10 shows an example of basic elements. The greater the number of basic elements, the higher the accuracy but the more difficult it is to use. Conversely, the smaller the number, the easier the element extraction but the lower the accuracy. Empirically, it is good to make an evaluation using around 20 basic elements, but there is no problem with more than this. Predetermined work and processing contents are defined for these basic elements, and they can be extracted from the information described in the design drawing or the article or part. The first column of FIG. 10 shows the name of each basic element, and the second column of FIG. 10 shows the symbols corresponding to each basic element. As shown here, symbols are assigned a burden on the evaluator by making it easier to associate with the work and processing contents of the corresponding basic elements, for example, "↑" for upward movement or "→" for lateral movement. It is possible to reduce.

FIG. 11 shows an example of the correction element. The correction element is an item that can be specified and extracted from the information, articles, and parts shown in the design drawing, and is an item that affects the ease of disassembling the part in addition to the basic element. Examples of the correction element include the material, size, and mounting position of the component, and many other factors are possible.

The correction elements are those used when estimating the work and processing contents of an article or part from the combination of basic elements in the analysis database, and the work and processing contents estimated by the analysis database. It can be divided into those used when calculating the processing time or cost.

An example of the correction element used when estimating the work and processing contents of the article or part in the analysis database is to indicate the attachment position of the article or part. For example, if a correction element such as "low component mounting height position" is attached to the removal operation of an article or a part, "squat" and "stand up" when estimating the work and processing contents by the analysis database. The action such as “” is added.

On the other hand, as an example of the correction element used for calculating the time or cost required for the work and the process, the mass of the article or the part is shown in the work and the process content estimated by the analysis database. There is. When the mass of an article or a part is increased, the time or cost required for the same work and process tends to increase in general. Therefore,
When this type of correction element is added, the time or cost required for the work and processing calculated by the general rule is required for the work and processing calculated by multiplying the correction coefficient αn by 1 or more. Correct time or cost. Depending on the type of correction factor, the correction coefficient α
There are some in which n is 1 or less.

FIG. 12 shows an example of the contents of the analysis database for estimating the work and processing contents of articles or parts from the basic elements and the like. As the input information, the part names and the number of parts shown in the first column of FIG. 12, the basic elements shown in the second column of FIG.
The work and processing contents shown in the fourth column of FIG. 12 are estimated from the information such as the correction factors shown in the third column. For example, it is presumed that the problem that the screw is inside the deep hole makes it difficult for the operator to grip during the actual work or processing, and the basic elements of screw rotation and upward movement make the driver The work used and the processing content will be estimated. In addition, this work procedure estimation database
It is possible to estimate the work procedure corresponding to various work environments and products by changing it according to the product.

With such an analysis database, the evaluator can judge the situation and automatically convert it into detailed analysis contents by simply giving simple input information, so that the evaluation can be performed accurately.

FIG. 12 shows an example of a basic index indicating the degree of difficulty of the work and processing of the article or part to be evaluated based on the estimated work and processing contents in the fifth column. The basic index has a set index indicating the degree of difficulty independently for the work and processing contents, and some such as the screw removal operation using a screwdriver that often occurs as a series of work and processing. In some cases, an index indicating the degree of difficulty is set by collecting work and processing contents. Also, the value may change depending on the correction factor.

As shown in the fourth and fifth columns of FIG. 12, when the number of the same parts is 2 or more, the number of the same parts is not always 1
It is not always the case that the work and processing contents obtained by doubling the work and processing for the above parts are estimated and an index indicating the degree of difficulty is given. For work and processing that requires tools such as a screwdriver, such as removing screws,
The operation of removing the tool from the tool rest is performed before the first part, and the operation of placing the tool on the tool rest is performed only after the last part.

The total of the basic indexes given in the fifth column of FIG. 12 is an index showing the degree of difficulty of work and processing of the article or part to be evaluated.

With the index representing the degree of difficulty of the article or part calculated here, it is possible to calculate the score of the article or part as an index of workability and processing of the article or part. The details will be described below.

The total value Gi of the indexes representing the work and processing difficulty of the parts is determined by the ratio to the basic index Gbi representing the work and processing difficulty of the parts having the reference state under the same production environment condition. It can represent the time or cost required to work and process a part. That is, the evaluation component requires time or cost for the work and the processing by the cost multiple N times calculated by the following formula with respect to the work and the processing of the component having the reference state.

[0124]

[Equation 10]

Here, as the reference state of the article or part, among the work and the processing of the article or the part, the article or the part whose work and processing are completed only by the work and the processing having the smallest index showing the degree of difficulty. That is, the articles or parts to be worked and processed are applied only by the basic elements having the smallest index showing the degree of difficulty.

FIG. 13 shows the evaluation results of work and processing of articles or parts having a standard state. This is an analysis of the work and processing of articles or parts that are processed and processed only by upward movement, which is the basic element that has the smallest index of difficulty in disassembly work and processing. The total value of the indexes indicating the difficulty level of is Gbi.

When the index indicating the difficulty level of the work or processing of the article or part is N times the index indicating the difficulty level of the work or processing of the part having the standard condition, Score (E), which is an index of ease
Is calculated by a functional formula that decreases or increases from a predetermined value, E = 100 ± f7 (N). By taking 100 as the predetermined value, a score is obtained as an index of workability and processing easiness of 100 points, which is generally easy to understand.

The time or cost required for the work and processing of the article or part to be evaluated can be estimated by the following procedure.

The time or cost required for the work and processing of the article or part having the reference state under the same production environment condition can be obtained by measuring and calculating from the production environment under the production environment condition.
Here, the time or cost required for the work and treatment of the article or part having the standard condition is calculated as Tbi.
Alternatively, if Cbi is used, the estimated value of the time or cost required for the work and processing of the article or part to be evaluated (Tfi or Cfi) can be calculated by Tfi = Tbi × N Cfi = Cbi × N is there. If the disassembling cost or time of the part is used, it is possible to obtain the rating of the part by the method described in the first embodiment.

Here, as Tbi or Cbi, the time or cost required for the work and treatment of the article or part having the standard condition under the same production environment condition is usually used, but the value under the similar production environment condition is used instead. It is also possible to do so. However, in such a case, it is necessary to consider that the estimated Tfi or Cfi includes a difference from the similar production environment condition.

The operation by the computer system will be described with reference to FIG.

In step 1, the work and processing contents of the part to be evaluated are expressed by a combination of basic elements, and each basic element is also input to the computer with a correction element if necessary. If there is something that is difficult to express with a basic element in the work and processing content of a part, it is expressed by selecting the symbol of the basic element with the most similar content. In step 2, the input data is confirmed, and addition / deletion / correction is performed.

If the above operation is carried out for all the articles or parts to be evaluated, the computer automatically calculates the grade of each article and all or part of the time or cost required for work and processing, and displays the result. The result is displayed on a copy and the result is output to a printer as needed. It also assists the user in design improvement by automatically searching and displaying improvement cases.

[0134]

As described above, according to the present invention, each stage of the life of an article or part, especially maintenance / inspection / repair,
The ease of work and processing in dismantling, disassembly, and recycling is (1) easy at the early stage of design development, (2) easy without requiring abundant experience and knowledge, (3) work and processing time, or Not only the work and processing costs, but also the quality of the design structure, materials, etc. will be evaluated quantitatively in a form that is easy for anyone to understand.

Therefore, the designer can evaluate and improve his / her own design at an early stage of design development. And
(4) By having an example that serves as a reference for design improvement, it is possible to prompt the designer to make an improvement, and to obtain a good quality design in a short time from the viewpoint of workability and processability.

[Brief description of drawings]

FIG. 1 is a schematic diagram of the life of an article and each work type.

FIG. 2 is a basic flow chart of design of an article or part and evaluation calculation of the present evaluation method.

FIG. 3 is a computer system diagram for evaluation calculation of the present invention.

FIG. 4 is a diagram showing basic elements and their contents in the disassembling work of the present invention.

FIG. 5 is a diagram showing a correction element and its contents in the disassembly work of the present invention.

FIG. 6 is an output example of an evaluation calculation result according to the present invention.

FIG. 7 is an example of an improved case display according to the present invention.

FIG. 8 is an improved case retrieval method according to the present invention.

FIG. 9 is an evaluation process chart of the present invention.

FIG. 10 is an example of basic elements in the disassembling work of the present invention.

FIG. 11 is an example of a correction element in the disassembling operation of the present invention.

FIG. 12 is an example of an analysis result by the analysis database of the present invention and an index indicating the degree of difficulty in disassembly work.

FIG. 13 is an example of an evaluation result of work and processing of an article or a part having a reference state.

FIG. 14 is an evaluation process diagram in the second embodiment of the present invention.

[Explanation of symbols]

 1 ... Manufacturing (including inspection), 2 ... Sales, 3 ... Use, 4 ... Maintenance / inspection / repair, 5 ... Collection, 6 ... Disassembly, 7 ... Disassembly, 8 ... Recycling, 9 ... Detoxification, 10 ... Disposal, landfill, incineration, etc. 11 ... Conceptual design, 12 ... Evaluation element extraction, 13 ... Evaluation element input, 14 ... External storage device 15 ... Automatic calculation, 16 ... Storage device, 17 ... Evaluation result output, 18 ... Evaluation result determination 19 ... Design improvement 20 ... Detailed design 21 ... Pen input board, 22 ... Keyboard, 23 ... Mouse, 24 ... Arithmetic unit, 25 ... Printer, 26 ... Display

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsuya Suzuki, 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa, Ltd.Institute of Industrial Science, Hitachi, Ltd. Hitachi, Ltd., Production Engineering Laboratory

Claims (10)

[Claims] 1. A method for quantitatively evaluating, by a computer, whether or not the structure of an article is easy to work, including a process of registering in a computer and a process of evaluating the workability of an article to be evaluated. The registration process in the computer is composed of the following steps, and (a) a plurality of types of states that are expected to be included in the parts constituting the article to be evaluated are classified into basic elements, and each basic A standard work cost required for working a component equipped with an element in a standard state, a work required time, and at least one value of these indexes are input from the input device in association with the identification symbols of the respective basic elements. Then, (b) classify multiple types of factors other than the above basic elements that affect the work cost of each of the above basic elements, the required work time, and these indexes. Each as a correction factor , Each correction element is divided into at least one state, and the standard work cost required for the work of parts in each state, the work required time, and the respective values of these indexes are associated with the identification symbols of the respective correction elements. Input from the input device, registered in the correction element storage unit of the storage device, (c) from among the registered basic elements, input a basic element representing a predetermined reference state as a reference element, and Input a correction standard that represents a predetermined state as a reference for each registered correction element, and register each in the standard storage unit of the storage device, (d) work cost of the reference element, work required time, and these Of each of the basic elements with respect to at least one value of the index, the required work time, and a basic reduction representing the degree of difficulty of the operation for the basic element, which is obtained based on at least one value of these indexes. And (e) the work cost in the correction standard of each correction element, the work required time, and the work cost in each state in the correction element for at least one value of these indexes, A correction coefficient representing the degree of difficulty of the work for the state of the correction element, which is obtained based on the work required time and at least one of these indexes, is registered in the correction element storage unit, and the work of the evaluation target article is performed. The process of evaluating the ease of execution is executed by the following steps, and (f) the input device, and the identification symbols representing the basic element and the correction element of each part constituting the evaluation target article are input, (g) Referring to the basic element storage unit and the correction element storage unit based on the input of the identification symbols representing the basic element and the correction element included in each part, the corresponding basic deduction and correction The number is read out, and the work cost of each part, the work required time, and at least one value of these indices are the work cost of the part standard corresponding to the part, the work required time, and at least one value of these indices. The component deduction of each component is obtained based on the read basic deduction and the correction coefficient by the first index function that is defined to give an increasing value when the component deduction is increased. All the correction elements other than the correction element that has the element and represents the size are correction standards and have a size of a predetermined ratio, and (h) represents the difficulty level of the work for each part. The workability score of the part is calculated by calculating the value of the part deduction by decreasing or increasing from the predetermined reference value, and (i) the work cost of each of the parts constituting the article, the work required time, and the index of these indices. At least 1 The value of at least one of the work cost of the article, the work required time, and these indexes obtained by adding up the values of A second index function, which is defined to give an increasing value when increasing compared to the value, determines an article deduction based on the part workability score, and the article standard is configured by combining the part criteria. It is a standard of the article to be evaluated, which is assumed to have been performed, and (j) an article workability score indicating the degree of difficulty of work on the article to be evaluated by decreasing or increasing the value of the article deduction from the predetermined reference value. And (k) an output device to output the workability score of the work, the workability and processing ease evaluation method of the product. 2. The method according to claim 1, wherein in the step (d), the arithmetic unit stores at least one of the work cost of each basic element, the required work time, and these indexes from the basic element storage unit. A value is read, and the corresponding work cost of the reference element registered in the reference storage unit,
The work duration and at least one value of these indices are read, and the difficulty level of the work for each basic element is determined based on the value of the read basic element with respect to the value of the read reference element. The process of obtaining the basic deductions to be expressed and registering each of the basic deductions in the basic element storage unit is repeatedly executed for each basic element, and in the step (e), the arithmetic unit stores the correction element storage. At least 1 of the work cost, the work required time, and these indexes in one state classified in each correction element by the department.
One value is read out, at least one value of the work cost, the work required time, and the index corresponding to the correction reference registered in the reference storage section is read out, and the reading for the read value of the correction reference is read. Based on the value of the state of the correction element that has been issued, a process of obtaining a correction coefficient indicating the difficulty level of the work for the state of the correction element and registering the correction coefficient in the correction element storage unit Repeat for each state of. 3. An easiness score of work and processing of the parts is calculated for a plurality of parts constituting an article to be evaluated, and a single or a plurality of work and processing of the calculated plurality of parts is calculated. The ease of work and processing of the article according to claim 1, wherein the ease of work and processing of the article is calculated based on a function formula or a function for obtaining an average value of the ease scores. Sex evaluation method. 4. The work cost or working time of the article or part to be evaluated, and the processing cost or the processing time or index thereof are calculated using the existing article or existing part similar to the above-mentioned article or part. Ease of work and treatment of existing goods and parts that are similar to the cost or work time and the actual value of treatment cost or treatment time and their indexes, and the easiness of work and treatment of the parts and articles to be evaluated The workability / processability evaluation method according to claim 1, wherein the evaluation is performed by a function formula or a function for comparing the scores. 5. A plurality of basic work and processing elements classified corresponding to work and processing contents of an article or a part to be evaluated are respectively assigned to the article or part to be evaluated. 7. An analysis database which has analysis data in which at least one work and processing element suitable for the work and processing is applied and which can estimate the work and processing content for the article or part from the analysis data. 1. A method of evaluating workability and processing easiness of an article according to 1. 6. The time or cost required for the work or the processing is increased based on the work or processing easiness index (score) calculated by the method for each article or part to be evaluated. The workability and processing easiness evaluation method according to claim 1, which automatically points out and outputs the point. 7. The function according to claim 1, further comprising a function of automatically displaying an improved example for a point that causes an increase in time or cost required for work and processing, based on the result of the article workability score. Evaluation method of workability and handling of articles. 8. A function for accumulating improved cases for improving workability and processing of articles or parts is provided.
A method for evaluating the easiness of work and processing of the article according to. 9. A method for quantitatively evaluating, by a computer, whether or not the structure of an article is easy to work, including a process of registering in the computer and a process of evaluating the workability of an article to be evaluated. The registration process in the computer is composed of the following steps, and (a) a plurality of types of states that are expected to be included in the parts constituting the article to be evaluated are classified into basic elements, and each basic A standard work cost required for working a component equipped with an element in a standard state, a work required time, and at least one value of these indexes are input from the input device in association with the identification symbols of the respective basic elements. Then, (b) classify multiple types of factors other than the above basic elements that affect the work cost of each of the above basic elements, the required work time, and these indexes. Each as a correction factor , Each correction element is divided into at least one state, and the standard work cost required for the work of parts in each state, the work required time, and the respective values of these indexes are associated with the identification symbols of the respective correction elements. Input from the input device, registered in the correction element storage unit of the storage device, (c) from among the registered basic elements, input a basic element representing a predetermined reference state as a reference element, and Input a correction standard that represents a predetermined state as a reference for each registered correction element, and register each in the standard storage unit of the storage device, (d) work cost of the reference element, work required time, and these Of each of the basic elements with respect to at least one value of the index, the required work time, and a basic reduction representing the degree of difficulty of the operation for the basic element, which is obtained based on at least one value of these indexes. And (e) the work cost in the correction standard of each correction element, the work required time, and the work cost in each state in the correction element for at least one value of these indexes, A correction coefficient indicating the degree of difficulty of the work for the state of the correction element, which is obtained based on the work required time and at least one of these indexes, is registered in the correction element storage unit, and the work of the evaluation target article is registered. The process of evaluating the ease of maintenance is executed by the following steps, and (f) the input device identifies the basic element and the correction element of each component of the article to be evaluated, and the article, and The existing value of the existing article similar to the part, the actual value of the work cost of the existing part, the actual value of the work required time, or the actual value of these indexes, and further, the basic element and the correction element of the existing part And (g) referring to the basic element storage unit and the correction element storage unit based on the input of the identification symbols representing each of the basic element and the correction element provided in each part. Then, the corresponding basic deduction and the correction coefficient are read out, and the work cost of each part, the work required time, and at least one value of these indexes are the work cost of the part standard corresponding to the part, the work required time, And the component deduction of each component based on the read basic deduction and the correction factor by the first index function defined so as to give an increasing value when increasing in comparison with at least one value of these indices. The component reference has the reference element, all the correction elements other than the correction element expressing the size are the correction reference, and have the size of a predetermined ratio, and (h) About parts The workability score of parts, which indicates the difficulty level of all work, is calculated by decreasing or increasing the value of the part deduction from the predetermined reference value, and (i) the work cost and work of each of the parts that make up the above article. The work time of the article, the work required time, and the at least one value of these indexes obtained by summing the time required and at least one value of these indexes are the work costs corresponding to the article standard, and the work requirement. Determining an article deduction based on the part workability score by a second index function defined to provide an increasing value when increasing compared to time and at least one of these indices. The article standard is a standard for the article to be evaluated, which is assumed to be configured by combining the above-mentioned parts criteria, and (j) the value of the article deduction is decreased or increased from the predetermined reference value to determine the product for the article to be evaluated. The article workability score representing the difficulty level of the item is calculated, and (k) based on the input of the identification symbols representing the basic element and the correction element provided in each of the existing parts, the basic element storage unit and the correction element memory are stored. The corresponding basic deduction points and the correction factors are read out by referring to the section, and the component deduction points of the existing parts are obtained by the first index function based on the read basic deduction points and the correction factors, and the parts are deducted. A component workability score of the existing component is obtained by decreasing or increasing a deduction from the predetermined reference value, and the article of the existing product is calculated by the second index function based on the component workability score. Calculate the workability score, (l) the actual value of the work cost of the existing parts, the actual value of the work required time,
Or, based on the actual values of these indexes, by comparing the part workability score of the part of the evaluation target article and the part workability score of the existing part, the work cost of the evaluation target part,
Calculate the required work time or the estimated value of these indexes, and
Based on the actual value of the work cost of the existing article, the actual value of the work required time, or the actual value of these indexes, the article workability score of the article to be evaluated and the article workability score of the existing article And the work cost of the article to be evaluated,
Calculate the required work time or the estimated value of these indices, and (n)
With the output device, the article workability score, the component workability score, and the article, the component work cost, the work required time, or the estimated value of these indexes of the article to be evaluated are output by the output device. Workability evaluation method. 10. An input device, a storage device, a computing device,
A display device, and the input device improves the function of applying at least one work and processing element commensurate with the work and processing, and the ease of the work and processing to each of the articles or parts to be evaluated. The storage device has a function of inputting improvement cases, and the storage device is a basic element for each of the articles or parts given by the input device, an analysis database, an improvement case database, and each article or part estimated by the analysis database. Is provided with a function of storing work and processing contents, a functional formula, a function, and an evaluation calculation result, and the arithmetic unit operates on an article or a part based on the data and the analysis database read from the storage device. And processing contents are estimated, and Has a function to calculate the index of the difficulty level of the work and processing of the article or part to be evaluated based on the work and processing content of the part, and the work of the article or part to be evaluated is easy from the improvement case database. Of the article or part characterized in that the display device has a function of extracting an example of improvement in sex, and the display device has a function of displaying an index representing the degree of difficulty of work and processing calculated by the arithmetic device. Workability evaluation support device.