Applied Mechanics and Materials Vol. 816

Abstract: Experimental studies of production technological processes are now enabled through a use of the available simulation software. The scientific studies, executing experiments with simulation software, are used to optimize, improve efficiency, and elimination of deficiencies in manufacturing processes without any interfering with the real processes. The big advantage is that by using simulation software, one can simulate a number of experimental variations of scenarios in advance, and evaluate any intervention in the course of the active process. Experiments with a built simulation model answer the questions of what-if analysis for variable set scenarios.

Abstract: Article is directed to segmentation of production using hierarchical methods of cluster analysis. Analysis is performed in statistical software STATISTICA. The result of clustering process are segments of products and machinery in form of arranged machine-product matrix. These data may serve for changing the disposition of workplace toward to manufacturing cells.

Abstract: The paper deals with the mechatronical system, that are necessary during the implementation of the production processes in the companies. Mechatronics systems is a relatively new approach to product design and development, merging the principles of electrical, mechanical, computer and industrial engineering. Examples include robots, photocopiers, PC disk drives, sensors, automotive equipment sucha s anti-lock braking systems and many others. This paper focuses on robots and their possibilities of commissioning to the real production processes.

Abstract: A variety of engineering errors can cause a defect in vehicles. Problems are usually concentrated on models that were produced during a certain time period at one specific plant. Consumers who encounter such problems can report them, fill petitions or put online complaints on specific car manufacturers. Vehicle defects can cause many problems and even endanger human life. That is why, in the interest of safety, any recall affecting the consumer vehicle should be completed without delay. The paper presents recalls of three car manufacturers, namely: Volkswagen group, PSA, and Kia analyzed between years 2005 to 2015. The results are presented in graphs and diagrams. First part of the paper discusses the current terminology and procedures of car recalls. In the second part the three car manufacturers are presented. Recall analysis creates the third part of the paper and the results are presented in form of graphs and diagrams. Also the error rate of each car manufacturer is calculated and presented in the paper.

Abstract: This article deals about the challenges of structural changes in manufacturing conditions. The objective of this paper is to present the modular workstations concept based on miniaturization and re-configurability trends. The article is aimed at problems of designing of production systems with a modular construction structure. The modular structure allows an individual and flexible adaptation to varying requirements but also the realization of low-cost solutions for creation of new or modernized production base. The goal is to present the example of modular workstations solutions that correspond with new designing approach. The specification of basics principles, which should help to designing flexible manufacturing systems, discussed in this paper are: modularity; integrability; convertibility; diagnosability; customization. The theoretical part provides an overview of fundamental design principles in manufacturing structures. In the first part of this article are discussed the specification of basic flexibility types in production system and the main impacts influencing design of manufacturing structures. The closing section of the article provides the specification of example solution of adjustable production platform with modular frame (called desktop factory).

Abstract: Successful performance of a company and its ability to handle growing competition is dependent on its capacity of implementing new technologies and making use of new methods of management. This report aims at cost management tool that enables controlling of costs through the whole life-cycle. Life Cycle Costing allows us to look at the start-up costs and the costs associated with the cessation of production, after-sales services costs and other expenses not taken into account in planned or operational calculation, see them as one unit and thereby evaluate the effectiveness of the product. Before establishing a production, calculation of the life-cycle costs is based on various factors which can be found in this article as well as the division of costs within the scope of calculation. It contains an example of calculation and accurate illustrations of process-based models of life-cycle costing from different points of view brought by various authors dealing with this topic, the usage of costing and the relationship with other calculations that are component parts of a company’s strategic cost management.

Abstract: The paper deals with application of simulation software for optimizing lines dealing with the manufacture of doors a car. The introduction is described briefly compare advantage and disadvantages of applying simulation in different processes [2]. It also includes a brief description of the manufacturing process of a car doors. Based on the results of simulation software Tecnomatix Plant Simulation evaluates two potential variants of optimization [10].

Abstract: Simulation as a decision making method through its software is a supportive tool for analysis of a material flow, and it is appropriate when a performance of complex systems have to be evaluated, designed and optimized. As the behavior of complex systems is hardly predictable, simulating the existing systems’ performance is helpful in order to gain results of system performance before applying changes in a real system. A change that appears to be a best solution might, after calculation and analysis of its consequences, prove as a wrong direction lead. The more accurately is the model built, the more real results are being achieved. Decisions about the performance improvement might be intuitive as what-if analysis, or achieved by process redesign and improvement methods as Theory of Constraints, Lean Manufacturing, Six Sigma Method, some of them with slight changes in a single processes following Kaizen principles.

Abstract: To survive in such an increasingly competitive world, there is a need of continuous improvement in every type of industry. An answer to these challenges for manufacturing companies is the implementation of lean concepts. The importance of short changeover times, SMED, has always been critical for manufacturing companies. It is one of the many lean production methods for reducing waste in the manufacturing process. It's a quick and effective way adjustment process of the actual product to another product. The practical part is focused on usage of SMED in manufacturing. Project was realized in engineering company oriented on machining heavy products. Separating time to external and internal we saved about 10% of total production time. The result is proposal timetable of standard changeover process. Also timetable of two pieces in batch, because insertion two pieces in the batch reduced the total time of production. Total time was reduced of two changeovers.

Abstract: Production lines are complex mechatronic systems which have in their structure mechanical, electronic, control and software subsystems. The complexity of these systems is identified for mass production of paper napkins. The aim is to decide on the choice of the production line in terms of ensuring growth of value of the business and satisfaction of customers needs. The decision making process is carried out in steps of formulating the investment problem, technical features of the project, economic evaluation of the project based on a financial model in Microsoft Excel and analysis of project risks utilizing Monte Carlo simulations in the Crystal Ball system.