Cost Estimation Methods of Machine Elements at the Design Stage in Unit and Small Lot Production Conditions

Więcek, Dorota; Kuric, Ivan

doi:10.1515/mspe-2019-0002

Cited by 12 publications

(9 citation statements)

References 9 publications

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“…In the example presented, the developed structure (Figure 1) is non-technological from the point of view of the possibility of implementation into production in conditions of high-volume production. In the applied assessment method, the project efficiency index was obtained at the level of W ep = 22% (authors of publications [23][24] give a minimum value of 60%) and W man = 2.92 and W mon = 12.36 (where both indicators should be less than 2.5).…”

Section: Lucas Dfa Methodsmentioning

confidence: 99%

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Assessment of the Constructionality of the Structure in the Assembly Processes

Matuszek¹,

Seneta²,

Dulina³

et al. 2021

Komunikácie

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The paper presents the methodology of designing the production process of a new product from the point of view of the criterion of the assembly operations technology (Design for Assembly - DFA) in the automotive industry. The article describes methods and techniques used during the implementation of a new product into production. The impact of the methods on improving the assembly technology of a complex product is described. Suggestions for improving for unit and small series production are presented.

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Section: Lucas Dfa Methodsmentioning

confidence: 99%

“…After the redesign for the small lot production: W unk = 71/ 71 + 85 = 0.45 (45 %). (24) After the redesign for the mass production:…”

Section: B208mentioning

confidence: 99%

Assessment of the Constructionality of the Structure in the Assembly Processes

Matuszek¹,

Seneta²,

Dulina³

et al. 2021

Komunikácie

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“…The severity of the effects is the second feature of the matrix and from its perspective, problems can be divided into five main categories: technical, planning, cost, safety and environment, and software [2]. The technical category concerns problems related to production technology, planning is related to tasks not completed on time, cost problems define problems higher than planned costs, or deficiencies in the budget, safety and the environment group problems directly affecting health and life, and indirectly also costs and delays, software are all the problems that affect the process, but are outside the production system and often beyond the company's control [6], [7], [8]. In addition to the above five problem categories, Dennis A. Perry distinguishes the categories of quality, legality and employee commitment, and notes that during his research, some environmental problems were more closely related to technical problems than safety [9].…”

Section: Review Of the Literaturementioning

confidence: 99%

Model of non-conforming product feature as a tool for selecting product groups with the greatest impact on quality in production processes

Łampika

Burduk

Machado

2022

J. Phys.: Conf. Ser.

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The article describes four stages of building a model based on a set of non-conforming products, and then verifies them on a practical example of implementation in a company from the automotive industry. The aim of the model is to support the analysis of quality problems in manufacturing companies. The first stage consists in defining the level at which the model will be built in the organizational structure. The second stage is to define the characteristics of non-conforming products. The third stage is to determine the possible values of each feature and grouping non-conforming products into sets of feature values. The fourth step is to define all parts of the common sets feature values. The model was checked at the level of the aluminium wheel production plant, where 7 features of non-conforming products were defined. The production data obtained from the model were described and interpreted. Possible ways of using the model of non-conforming product features by both technologists and management staff were shown.

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“…Estimations might be used instead of calculations, for instance when data are scarce or when future events are uncertain. Such estimations can be based on knowledge and experience of experts or on similarities with previous projects (Więcek et al, 2019). The ability to make good estimations and assumptions increases with experience, but even for experienced investigators, new situations will pose problems.…”

Section: Some Things Are Hard or Impossible To Monetizementioning

confidence: 99%

Total Cost Analysis in Logistics : Practical Execution, Learning, and Teaching in Higher Education

Oskarsson

2019

Linköping Studies in Science and Technology. Dissertations

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Cost is considered a crucial factor in much decision-making in private and public organisations. Therefore, the ability to calculate total estimated costs for different alternatives is important. However, such total cost analysis is a challenging task. Providing students with the knowledge and skills needed for total cost analysis is therefore relevant in several disciplines within higher education. Within logistics management, total cost analysis is for decades by several scholars regarded as a 'cornerstone', a fundamental part of the discipline. However, except for describing the basic steps and presumptions, the literature does not give much support concerning how to conduct such analyses, or which the difficulties associated with total cost analysis are. This blank space in literature is not limited to the logistics discipline, it stretches throughout many disciplines. Neither does literature cover how to teach to support students' learning of total cost analysis. Hence, to address the lack of research, the purpose of this thesis was formulated as follows: To contribute to the understanding of conducting, learning, and teaching total cost analysis. Three research questions were shaped to address each part of the purpose: conducting, learning and teaching. RQ1 What challenges are connected to the process of conducting total cost analysis? RQ2 What thresholds are there for learning how to conduct total cost analysis? RQ3 How can total cost learning be supported by suitable educational methods? The research questions are connected to each other in the sense that the challenges of conducting total cost analysis (RQ1) indicate within which areas total cost learning is difficult, and thereby where thresholds are to be investigated (RQ2). Further, knowledge about the learning thresholds is needed to discuss suitable educational activities (RQ3). The research was conducted by a combination of literature reviews and multiple case studies at four Higher Education Institutions, where both teachers and students were approached. The findings for RQ1 were developed in an abductive procedure walking back and forth between literature and cases. A twelve-step process for total cost analysis was defined, and specific challenges associated for each of these steps. Regarding learning thresholds (RQ2), perceived difficulties with learning total cost analysis were identified in the case studies. These difficulties were then analysed against threshold characteristics available in literature. This resulted in the identification of four total cost learning thresholds. Literature on constructivist-based teaching was used to suggest teaching methods to support learning (RQ3). These types of activities proved to match the ones most appreciated by teachers and students in the studied cases.

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Cost Estimation Methods of Machine Elements at the Design Stage in Unit and Small Lot Production Conditions

Cited by 12 publications

References 9 publications

Assessment of the Constructionality of the Structure in the Assembly Processes

Assessment of the Constructionality of the Structure in the Assembly Processes

Model of non-conforming product feature as a tool for selecting product groups with the greatest impact on quality in production processes

Total Cost Analysis in Logistics : Practical Execution, Learning, and Teaching in Higher Education

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