Manufacturing maturity capability factor determination method based on maturity threshold matrix

Abstract

The present invention provides a manufacturing maturity capability factor determination method based on a maturity threshold matrix. The maturity threshold is obtained according to the criticality coefficient and maturity scale of each evaluation rule. The maturity threshold is combined with the maturity threshold matrix to give a quantitative result on whether the capability factor meets the relevant clauses, so that the determination method can be quantified, the accuracy of the determination is improved, and the transformation from the previous determination based on subjective experience to quantitative determination is realized. Through evaluation, the technical development status in model development can be accurately understood, manufacturing risks can be scientifically identified and responded to, and the optimized management and control of the equipment development and production process can be realized, manufacturing risks can be reduced, the production cycle can be shortened, and costs can be effectively controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of manufacturing maturity evaluation, and is a quantitative method for determining whether capability elements meet corresponding clauses. Specifically, the invention relates to a manufacturing maturity capability element determination method based on a maturity threshold matrix. Background Art

[0002] At present, the pre-emptive control of major project risks has become a focus of attention in the development and production of weapons and equipment in various countries. The development process of major projects often faces challenges in performance indicators, progress, and funding. Foreign countries use manufacturing maturity evaluation methods to manage project risks, which can effectively improve project progress and reduce costs.

[0003] However, due to insufficient estimation of the maturity of key manufacturing adopted, it is difficult to optimize the management and control of my country's equipment development and production process, resulting in high manufacturing risks of my country's projects, difficult to control the development progress, and ineffective control of manufacturing costs and quality.

[0004] In response to the above problems, it is necessary to design a manufacturing maturity determination method to evaluate the manufacturing maturity of equipment at each stage of development and provide a strong basis for risk control of model equipment. Summary of the Invention

[0005] In response to the problems existing in the prior art, the present invention provides a method for determining manufacturing maturity capability factors based on a maturity threshold matrix, which can achieve quantitative management of manufacturing maturity.

[0006] The present invention is achieved through the following technical solutions:

[0007] A method for determining manufacturing maturity capability elements based on a maturity threshold matrix comprises the following steps:

[0008] Step 1: Determine key manufacturing elements based on the preparation project;

[0009] Step 2: Based on the general manufacturing maturity level definition, the manufacturing maturity level of key manufacturing elements is divided into several levels, and the maturity level of each level is specified in the manufacturing maturity definition;

[0010] Step 3: Define specific evaluation criteria for each level based on the general evaluation criteria for manufacturing maturity;

[0011] Step 4: Preliminarily determine the manufacturing maturity level of key manufacturing elements based on the manufacturing maturity definition to obtain a preliminary determination level;

[0012] Step 5: Score the importance and novelty of each evaluation criterion of the preliminary grade to obtain the criticality coefficient of each evaluation criterion;

[0013] Step 6: Obtain the maturity scale of each evaluation criterion in the preliminary determination level;

[0014] Step 7: Based on the criticality coefficient and maturity scale of each evaluation criterion of the preliminary determination level, a maturity threshold of each evaluation criterion is obtained, and the determination result of each evaluation criterion is determined based on the maturity threshold;

[0015] Step 8: Determine the final manufacturing maturity level of the key manufacturing elements based on the judgment results of each evaluation criterion.

[0016] Preferably, in step 3, the evaluation criteria for each level are defined based on the capability elements and sub-elements of the key manufacturing elements;

[0017] The capability elements include industrial base, design, cost, materials, supply chain management, manufacturing processes, schedule, quality and facilities.

[0018] Preferably, in step 5, the importance and novelty of each evaluation criterion are scored separately by an independent scoring method, and then the average value is calculated to obtain the criticality score of each evaluation criterion;

[0019] Finally, each criticality score is assigned to obtain the criticality coefficient of each evaluation criterion level condition.

[0020] Preferably, in step 6, the maturity scale of the evaluation criteria is assigned in a nonlinear manner according to the capability elements and sub-elements to obtain the maturity scale of the evaluation criteria.

[0021] Preferably, in step 7, the maturity scale of the evaluation criteria is multiplied by the criticality coefficient to obtain the maturity threshold of the evaluation criteria.

[0022] Preferably, the expression of the maturity threshold is as follows:

[0023] M = W·Z ijk

[0024] Where W is the criticality coefficient, and Z is the key factor. ijk It is the maturity scale of the i-th capability element, the j-th sub-element, and the k-th value.

[0025] Preferably, the method for determining the evaluation details is as follows:

[0026] When the maturity threshold is less than the first set value, the corresponding evaluation criteria do not meet the requirements;

[0027] When the maturity threshold is greater than the first set value and less than the second set value, the corresponding evaluation criteria meet the requirements under the set conditions;

[0028] When the maturity threshold is greater than the second set value, the corresponding evaluation criteria meet the requirements.

[0029] Preferably, the method for determining the final manufacturing maturity level of the key manufacturing element in step 8 is as follows:

[0030] If all evaluation criteria meet the requirements, the initial assessment level will be raised by one level. Then, steps 5-7 will be repeated until an evaluation criterion fails to meet the requirements, thus obtaining the final manufacturing maturity level.

[0031] Preferably, if any one of the evaluation criteria fails to meet the requirements, the preliminary judgment level is lowered by one level, and then steps 5-7 are repeated until all the evaluation criteria meet the requirements, thus obtaining the final manufacturing maturity level.

[0032] Compared with the prior art, the present invention has the following beneficial technical effects:

[0033] This invention provides a method for determining manufacturing maturity capability elements based on a maturity threshold matrix. The method obtains maturity thresholds based on the criticality coefficient and maturity scale of each evaluation criterion. By combining these maturity thresholds with the maturity threshold matrix, a quantitative result is given on whether the capability elements meet the relevant clauses. This quantifies the determination method, improving its accuracy and shifting from subjective experience-based judgment to quantitative assessment. Through evaluation, the method can accurately understand the technological development status in model development, scientifically identify and address manufacturing risks, optimize management and control of the equipment development and production process, reduce manufacturing risks, shorten production cycles, and effectively control costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a flow chart of a method for determining manufacturing maturity capability elements based on a maturity threshold matrix according to the present invention;

[0035] Figure 2 A flowchart of the maturity evaluation is produced for the present invention. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below with reference to the accompanying drawings, which are intended to explain rather than limit the present invention.

[0037] See Figure 1 and 2 The manufacturing maturity capability factor determination method based on the maturity threshold matrix includes the following steps:

[0038] Step 1: Determine the key manufacturing elements based on the preparation project.

[0039] Step 2: Based on the general manufacturing maturity level definition, the manufacturing maturity level of key manufacturing elements is divided into several levels, and the maturity of each level is specified in the manufacturing maturity definition.

[0040] The definition of manufacturing maturity is shown in Table 1:

[0041] Table 1 Definition of manufacturing maturity levels

[0042]

[0043]

[0044] Step 3: Define specific evaluation criteria for each level based on the general evaluation criteria for manufacturing maturity.

[0045] The evaluation criteria for each level are defined based on the capability factors and sub-factors of key manufacturing elements. The capability factors correspond to 9 capability factors and 23 sub-factors: industrial foundation, design, cost, materials, supply chain management, manufacturing process, schedule, quality, and facilities.

[0046] Step 4: Preliminarily determine the manufacturing maturity level of key manufacturing elements based on the manufacturing maturity definition to obtain a preliminary determination level;

[0047] Step 5: Score the importance and novelty of each evaluation criterion of the preliminary grade to obtain the criticality coefficient of each evaluation criterion grade condition.

[0048] Specifically, multiple experts independently scored each evaluation criterion for importance and novelty, and then averaged the scores to obtain the criticality scores for each evaluation criterion.

[0049] The final score was calculated using the arithmetic mean method.

[0050] The scoring table for the evaluation criteria is shown in Table 2

[0051] Table 2

[0052]

[0053]

[0054] Importance and novelty are assigned values ​​from 1 to 5 from high to low, corresponding to Table 3, thereby obtaining the criticality coefficient of manufacturing elements, where 1 is very low, 2 is low, 3 is medium, 4 is high, and 5 is very high.

[0055] Table 3 Distribution of criticality coefficients of manufacturing elements

[0056]

[0057] After obtaining the element criticality coefficient, linear values ​​are assigned from low to high as 0.9, 0.7, 0.5, 0.3, and 0.1, respectively, to obtain the comprehensive evaluation matrix of the criticality of manufacturing elements. The evaluation matrix is ​​shown in Table 4.

[0058] Table 4 Comprehensive evaluation matrix of criticality of manufacturing elements

[0059]

[0060] Step 6: Obtain the maturity scale of each evaluation criterion in the preliminary determination level;

[0061] Each evaluation criterion is scored based on its capability elements and sub-elements to obtain a maturity scale for each evaluation criterion.

[0062] The maturity scale ranges from 0 to 1 and is assigned nonlinearly in the order of 0.05, 0.1, 0.2, 0.4, and 0.8, which reflects the maturity of the project. ijk , where is the i-th capability element, the j-th sub-element, and the k-th value, see the appendix.

[0063] Step 7: Based on the criticality coefficient and maturity scale of each evaluation criterion of the preliminary judgment level, the maturity threshold of each evaluation criterion is obtained. The judgment result of each evaluation criterion is determined based on the maturity threshold and the set maturity threshold matrix. The maturity threshold matrix is ​​shown in Table 5.

[0064] Table 5

[0065]

[0066] According to the formula M=W(criticality coefficient)·Z ijk (Maturity Scale) is calculated to determine the maturity threshold M:

[0067] If the M value is in region A, it means that the capability element is considered immature, and the corresponding manufacturing maturity element is unacceptable.

[0068] If the M value is in area B, the capability factor is between mature and immature, and further discussion is needed based on the actual situation. Under certain conditions, the factor can be deemed inapplicable.

[0069] If the M value is in the C area, it means that the capability element is considered mature and its corresponding manufacturing maturity element is acceptable.

[0070] Step 8: Determine the final manufacturing maturity level of key manufacturing elements based on the judgment results of each price detail.

[0071] If all evaluation criteria meet the requirements, the initial assessment level will be raised by one level. Then, steps 5-7 will be repeated until an evaluation criterion fails to meet the requirements, thus obtaining the final manufacturing maturity level.

[0072] In other words, only when the evaluation support information proves that the work content and requirements specified in a certain level condition are met can the condition be judged to be met. Only when all the specific level conditions of a certain level are met can the first-level evaluation project be judged to have reached that level.

[0073] When one of the results of all the evaluation criteria does not meet the requirements, the preliminary judgment level will be lowered by one level, and then steps 5-7 will be repeated until the results of all the evaluation criteria meet the requirements and the final manufacturing maturity level is obtained.

[0074] Existing methods compare the work content and requirements specified for a certain level of condition with the actual situation to arrive at a conclusion of "yes," "no," or "not applicable." This method relies primarily on subjective experience and fails to consider the importance of relevant factors, thus failing to reflect the actual situation. This invention introduces a manufacturing maturity capability element determination method based on a maturity threshold matrix, enabling quantification of the determination method and improving its accuracy.

[0075] Example 1

[0076] The manufacturing maturity capability assessment method based on the maturity threshold matrix, taking the evaluation of the stator assembly of the turbocharger stage as an example, includes the following steps:

[0077] Step 1: Determine the key manufacturing elements: Determine the booster stage stator assembly as the evaluation object (key manufacturing element);

[0078] Step 2, Preliminary evaluation of the manufacturing maturity level of key manufacturing elements: Based on the definition of Manufacturing Maturity Level (MRL) (Table 6), the preliminary level is determined to be Level 6;

[0079] Table 6 Preliminary determination of manufacturing maturity level

[0080] MRL General Grade Definitions 6 Ability to produce prototype systems or subsystems in a production-relevant environment

[0081] Step 3: Detailed evaluation of the manufacturing maturity level of key manufacturing elements:

[0082] (1) Complete the preparation of specific rules according to the general evaluation rules of manufacturing maturity. Fill in the work description according to the actual work situation and collect relevant supporting materials to provide support for the work description. Compare the actual situation with the specific rules one by one to determine whether the corresponding clauses are met. Take the level 7 evaluation as an example (see Table 7 for details).

[0083] Table 7 Self-evaluation table of booster stage stator assembly (level 7)

[0084]

[0085]

[0086] (2) Determine the criticality coefficient of manufacturing elements

[0087] For the capability factor "material", according to the expert scoring results, the importance of this capability factor is determined to be 3 and the novelty is 2. According to the comprehensive evaluation matrix of the criticality of manufacturing elements (Table 3), the criticality coefficient W of the manufacturing element is 0.7.

[0088] (3) Determine the maturity scale

[0089] The indicator requirement for level 7 of the capability factor "material" is that "the maturity of the material meets the trial production requirements." In reality, the surface quality of the raw material is poor, and the flatness of the non-machined surface is poor, which requires research and development to improve the quality of the raw material. The maturity is not high, so its maturity level is medium. According to the content in the maturity scale (appendix), its maturity scale Zijk value is 0.2.

[0090] (4) Determine the maturity threshold

[0091] Calculating using the formula M = W·Zijk yields M = 0.7 × 0.2 = 0.14. According to the maturity threshold matrix (Table 6), this capability factor is in region B, somewhere between mature and immature. Further discussion is needed based on actual circumstances. Because the material capability factor significantly impacts progress and processing yield, the threshold was revised, ultimately resulting in a "No" rating for this factor.

[0092] By analogy, we can obtain the maturity thresholds of other capability elements, and draw conclusions on whether they are met or not according to the maturity threshold matrix.

[0093] Table 8 Self-evaluation Table of Stator Components for Booster Stage (Level 7)

[0094]

[0095]

[0096] Appendix: Maturity Scale

[0097]

[0098]

[0099]

[0100]

[0101]

[0102]

[0103] This invention provides a method for determining manufacturing maturity capability elements based on a maturity threshold matrix. The method obtains maturity thresholds based on the criticality coefficient and maturity scale of each evaluation criterion. By combining these maturity thresholds with the maturity threshold matrix, a quantitative result is given on whether the capability elements meet the relevant clauses. This quantifies the determination method, improving its accuracy and shifting from subjective experience-based judgment to quantitative assessment. Through evaluation, the method can accurately understand the technological development status in model development, scientifically identify and address manufacturing risks, optimize management and control of the equipment development and production process, reduce manufacturing risks, shorten production cycles, and effectively control costs.

[0104] The above content is only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A method for determining manufacturing maturity capability elements based on a maturity threshold matrix, characterized in that: The following steps are involved: Step 1: Determine key manufacturing elements based on the preparation project; Step 2: According to the general manufacturing maturity level definition, the manufacturing maturity level of key manufacturing elements is divided into several levels, and the maturity of each level is specified in the manufacturing maturity definition; Step 3: Define specific evaluation criteria for each level based on the general evaluation criteria for manufacturing maturity; Define the evaluation criteria for each level based on the capability elements and sub-elements of key manufacturing elements; Said capability elements include industrial base, design, cost, materials, supply chain management, manufacturing processes, schedule, quality and facilities; Step 4: Preliminarily determine the manufacturing maturity level of key manufacturing elements according to the manufacturing maturity definition to obtain a preliminary determination level; Step 5: Score the importance and novelty of each evaluation criterion of the preliminary determination level to obtain the criticality coefficient of each evaluation criterion; The importance and novelty of each evaluation criterion are scored separately by independent scoring, and then the average is calculated to obtain the criticality score of each evaluation criterion; Finally, assign a value to each criticality score to obtain the criticality coefficient of each evaluation criteria level condition; Step 6: Obtain the maturity scale of each evaluation criterion in the preliminary determination level; According to the capability elements and sub-elements, the maturity scale of the evaluation criteria is assigned in a nonlinear manner to obtain the maturity scale of the evaluation criteria; Step 7: Obtain the maturity threshold of each evaluation rule according to the criticality coefficient and maturity scale of each evaluation rule of the preliminary determination level, and determine the determination result of each evaluation rule according to the maturity threshold; The maturity scale of the evaluation criteria is multiplied by the criticality coefficient to obtain the maturity threshold of the evaluation criteria. The expression of the maturity threshold is as follows: M=W· Z ijk Among them, W is the criticality coefficient, Z ijk is the maturity scale of the kth value of the i-th capability factor, j-th sub-factor; Step 8: Determine the final manufacturing maturity level of the key manufacturing elements based on the results of each evaluation criteria; The determination method of the evaluation details is as follows: When the maturity threshold is less than the first set value, the corresponding evaluation criteria do not meet the requirements; When the maturity threshold is greater than the first set value and less than the second set value, the corresponding evaluation details meet the requirements under the set conditions; When the maturity threshold is greater than the second set value, the corresponding evaluation criteria meet the requirements.

2. The manufacturing maturity capability factor determination method based on the maturity threshold matrix according to claim 1 is characterized in that: There are 8 capability elements and 32 sub-elements.

3. The manufacturing maturity capability factor determination method based on the maturity threshold matrix according to claim 1 is characterized in that: The method for determining the final manufacturing maturity level of the key manufacturing elements in step 8 is as follows: When the judgment results of all evaluation criteria meet the requirements, the preliminary judgment level will be increased by one level, and then steps 5-7 will be repeated until there are evaluation criteria that do not meet the requirements, and the final manufacturing maturity level will be obtained.

4. The manufacturing maturity capability factor determination method based on the maturity threshold matrix according to claim 1 is characterized in that: When one of the results of all the evaluation criteria does not meet the requirements, the preliminary judgment level will be reduced by one level, and then steps 5-7 will be repeated until the results of all the evaluation criteria meet the requirements and the final manufacturing maturity level is obtained.

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