A framework for estimating manufacturing cost from geometric design data

Wei, Yui; Egbelu, Pius J.

doi:10.1080/095119200130054

Cited by 39 publications

(13 citation statements)

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“…The reason for the increasing complexity of the methods is the increased level of detail used to determine the manufacturing cost of a product as well as the accuracy of the calculation. In essence, product cost estimation attempts to realistically predict the costs required to manufacture a specific product before it is actually created (Wei & Egbelu, 2000;Jha, 1992).…”

Section: Challenges Of Product Cost Estimation In Die Manufacturingmentioning

confidence: 99%

“…In principle, feature-based methods break down the analysed part into standard sections, referred to as features and, based on their geometry, the volume of the material to be removed is determined, which when put together with the properties of the machine used reveals the needed processing time. Further, the cost estimate is an aggregate of the individual processing costs, in a similar manner as with the activity-based approaches (Shehab & Abdalla, 2001;Weustink, et al, 2000;Bouaziz, et al, 2004;Bouaziz, et al, 2006;Chin & Wong, 1995;Wei & Egbelu, 2000;Ben-Arieh, 2000;Ou-Yang & Lin, 1997;Nagahanumaiah, et al, 2005;Jung, 2002).…”

Section: Generative Cost Estimationmentioning

confidence: 99%

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An Accuracy Investigation of Product Cost Estimation in Automotive Die Manufacturing

Bendul¹,

Apostu²

2017

IJBA

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Automotive die manufacturers face the constant challenge of producing qualitative products while having to reduce costs. However, cost reduction measures are rather insignificant during the actual manufacturing process as the most important cost-impacting decisions are taken during the design phase. Cost estimation methods attempt to determine the production cost already in the design phase; the cost can be broken down and therefore the plan times of manufacturing processes can be pre-calculated, thus enabling early capacity decisions. Many researchers have been focusing for decades on developing efficient cost estimation methods. Yet their scarce access to cost information meant that most of the developed methods could not be evaluated with real data and thus their implementation in practice being challenged. This paper reviews and classifies cost estimation methods and investigates the accuracy of the estimate based onpractical application in 190 cases. The overall aim is to determine the accuracy level of the studied methods in practice and therefore identify their application fields.

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Section: Challenges Of Product Cost Estimation In Die Manufacturingmentioning

confidence: 99%

Section: Generative Cost Estimationmentioning

confidence: 99%

An Accuracy Investigation of Product Cost Estimation in Automotive Die Manufacturing

Bendul¹,

Apostu²

2017

IJBA

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“…In Wei and Egbelu's research, they arranged the possible process orders from the shape data of the machine processing products, and among these, they presented every possible process order expressing the process order that can minimize the machine processing cost using the tree structure composed of AND/OR, and calculated the processing cost according to each process plan using the cutting volume in each process, but the calculating method for material cost or labor cost was not taken into consider (Wei & Egbelu, 2000). Like the previous researches above, analogy-Based techniques have difficulties of measuring the degree of similarity between a new product and an existing product, and reflecting the technical change factors.…”

Section: Study Of Previous Researchesmentioning

confidence: 99%

Design and improvement of product using intelligent function model based cost estimating

Lee

Seo

2011

Expert Systems with Applications

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“…T ij ϭ k j n kϭ1 p ijk (2) where, T ij ϭ time required to accomplish the machining operation j of feature i k j ϭ coefficient for the operation j p ijk ϭ value of a parameter or the reciprocal of a parameter used in defining feature i 2. Computation of the required machining cost for each operation.…”

Section: Algorithmic Techniquementioning

confidence: 99%

“…Wei and Egbelu [2] developed a framework to estimate the lowest product manufacturing cost from the AND/OR tree representation of an alternative process. A major drawback of their framework was that it focused only on processing and material handling costs without considering other direct product costs such as set-up, material, fixtures, and labour cost.…”

Section: Introductionmentioning

confidence: 99%

An Intelligent Knowledge-Based System for Product Cost Modelling

Shehab

Abdalla

2002

Int J Adv Manuf Technol

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An intelligent knowledge-based system for product cost modelling is presented in this paper. The developed system has the capability of selecting a material, as well as machining processes and parameters based on a set of design and production parameters; and of estimating the product cost throughout the entire product development cycle including assembly cost. The proposed system is applied without the need for detailed design information, so that it can be used at an early design stage, and, consequently, redesign cost and longer lead time can be avoided. Hybrid knowledge representation techniques, such as production rules, frame and object oriented are employed to represent manufacturing knowledge. Fuzzy logic-based knowledge representation is applied to deal with uncertainty in the knowledge of cost model to generate reliable cost estimation. This paper deals with cost modelling of both a machining component and an injection moulding component, which is a process that gives high production rates, excellent quality and accuracy of products, and low manufacturing cost. Based on the analysis of the moulded product life cycle, a computerbased cost model was developed which integrated the relationship between cost factors, product development activities, and product geometry. The estimated cost included the costs of material, mould and processing. The system has been validated through a case study.

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A framework for estimating manufacturing cost from geometric design data

Cited by 39 publications

References 0 publications

An Accuracy Investigation of Product Cost Estimation in Automotive Die Manufacturing

An Accuracy Investigation of Product Cost Estimation in Automotive Die Manufacturing

Design and improvement of product using intelligent function model based cost estimating

An Intelligent Knowledge-Based System for Product Cost Modelling

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