ABOUT THE PERFOMANCE MULTI-PRODUCT MANUFACTURING SYSTEMS

2021 ◽  
pp. 43-47
Author(s):  
A. I. Kondakov
Keyword(s):  
Manufacturing Systems ◽  
Mechanical Engineering ◽  
Production Efficiency ◽  
Production Systems ◽  
Machine Building ◽  
Work Time ◽  
Input And Output ◽  
Product Manufacturing ◽  
Multiproduct Manufacturing ◽  
Modern Machine

The multi-product type of modern machine-building production significantly complicates the definition and use of its indicators. Some of them have clear meaning for traditional types of production. However, it is not well defined for multi-product production. This fully applies to the wellknown concept of “productivity” in mechanical engineering. Productivity metrics have traditionally been used as measures of production efficiency. However, they are not formally defined for multiproduct manufacturing. The presented article shows that these systems are collections of separate, but interacting subsystems. They are determined by a multitude of realized technological connections. It can be used several different productivity estimates when analyzing each subsystem. Only the results of the operation of alternative production systems, similar in input and output variables, can be compared in productivity. The productivity of the system grows with an increase in the share of its productive work time in the total time fund of its equipment, which is characterized by the value of the coefficient of extensive equipment use

Demand Forecasting in Hybrid MTS/MTO Production Systems

2018 ◽  
Vol 5 (1) ◽  
pp. 63-78
Author(s):  
Moeen Sammak Jalali ◽  
S.M.T. Fatemi Ghomi
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
Manufacturing Systems ◽  
Production Efficiency ◽  
Production Systems ◽  
Demand Forecasting ◽  
Series Analysis ◽  
Effective Decision ◽  
Effective Decision Making ◽  
Manufacturing Environments

This article describes how simplifying production-planning approaches for demand responsiveness has been well recognized as an operative means of accomplishing production efficiency. To support an effective decision making in manufacturing environments, this study will focus on adopting time series analysis concepts. It will attempt to focus on bringing forward novel structures for classifications of available surveying materials, which helps companies using time series analysis within production strategies to make a logical prediction of demands in hybrid manufacturing systems. In this regard, the authors will present two different categorizing structures as efficient ways of helping practitioners and academicians to find new approaches for applying near possible future forecasts by means of time series analysis methods.

scholarly journals The peculiarities of innovative activity in mechanical engineering

2021 ◽  
Vol 14 (1) ◽  
pp. 32-41
Author(s):  
E. V. Krasnova ◽  
Yu. A. Morgunov ◽  
B. P. Saushkin ◽  
N. V. Khomyakova
Keyword(s):  
Mechanical Engineering ◽  
Production Efficiency ◽  
New Technologies ◽  
Machine Building ◽  
Innovative Activity ◽  
Innovative Development ◽  
Economic Decline ◽  
Russian Economy ◽  
Guidance Documents

Russian mechanical engineering and especially its scientifi c sector are in deep crisis due to the general economic decline, acute shortage of resources, low quality management of the industry and inappropriate assessment of the role of mechanical engineering in economic development. Advanced development of mechanical engineering provides manufacturing with new strategically signifi cant technical means and technologies during the country’s partial economic isolation, and eventually becomes the main provision for innovative development of the country. As the resources are limited it is necessary to create a comprehensible sciencebased strategy for innovative development of a machine-building enterprise. The strategy ought to be based on a system of technological priorities, scientifi c research trends and developments built on corresponding research and production structures, human resources, scientifi c research and experience. Targeted approach to the distribution of the resources allocated for innovative activity is connected with their being concentrated on the priority projects and developments. Their list should be created according to objective criteria and all the risks and limitations arising. Reindustrialization of the national mechanical engineering within the modern scientifi c and technical environment should be considered as the most important factor and mechanism for strengthening the Russian economy. During the process the limited resources should be wisely distributed between creating new technological trends and restoring lost positions in the global technological environment. It is an extremely vicious policy to provide the country with serious advantages in new technological trends and at the same time deprive it of the basic technologies. The technological side of innovative activity in mechanical engineering is not as well-developed as institutional and fi nancial stimulation mechanisms. One of the reasons for  that is lack or insufficient level of guidance documents which regulate certain innovative activity on creating new technologies and improving the existing ones, on fi nding and implementing methods for raising production efficiency by means of new technological solutions.

THE USE OF CASE STUDY METHOD IN TEACHING THE TERMINOLOGY IN THE FIELD OF AGRICULTURAL MACHINERY

2019 ◽  
pp. 123-130
Keyword(s):  
Case Studies ◽  
High Performance ◽  
Mechanical Engineering ◽  
The United States ◽  
Machine Building ◽  
Soil Tillage ◽  
Case Study Method ◽  
Agricultural Machine ◽  
Manufacturing Machine

The scientific research works concerning the field of mechanical engineering such as, manufacturing machine slate, soil tillage, sowing and harvesting based on the requirements for the implementation of agrotechnical measures for the cultivation of plants in its transportation, through the development of mastering new types of high-performance and energy-saving machines in manufacturing machine slate, creation of multifunctional machines, allowing simultaneous soil cultivation, by means of several planting operations, integration of agricultural machine designs are taken into account in manufacturing of the local universal tractor designed basing on high ergonomic indicators. For this reason, this article explores the use of case studies in teaching agricultural terminology by means analyzing the researches in machine building. Case study method was firstly used in 1870 in Harvard University of Law School in the United States. Also in the article, we give the examples of agricultural machine-building terms, teaching terminology and case methods, case study process and case studies method itself. The research works in the field of mechanical engineering and the use of case studies in teaching terminology have also been analyzed. In addition, the requirements for the development of case study tasks are given in their practical didactic nature. We also give case study models that allow us analyzing and evaluating students' activities.

METHODOLOGY FOR ANALYZING THE EFFICIENCY OF MECHANICAL ENGINEERING ENTERPRISES

2020 ◽  
Vol 1 (4) ◽  
pp. 102-105
Author(s):  
V. A. BORODIN ◽  
◽  
А. I. GALUSHKINA ◽  
E. A. NAGAEVA ◽  
◽  
...  
Keyword(s):  
Economic Efficiency ◽  
Mechanical Engineering ◽  
Economic Condition ◽  
Machine Building ◽  
Evaluation Indicator ◽  
Building Enterprises

The article deals with the assessment of the economic condition of machine-building enterprises . Three major automotive companies were considered as the object of research. Profitability indicators were adopted as the main evaluation indicator. To assess the economic efficiency of enterprises, a formula is proposed that takes into account the weight of its components.

scholarly journals MODEL-BASED DESIGN OF AM COMPONENTS TO ENABLE DECENTRALIZED DIGITAL MANUFACTURING SYSTEMS

2021 ◽  
Vol 1 ◽  
pp. 2127-2136
Author(s):  
Olivia Borgue ◽  
John Stavridis ◽  
Tomas Vannucci ◽  
Panagiotis Stavropoulos ◽  
Harry Bikas ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Systems ◽  
Production Systems ◽  
Data Generation ◽  
Production Networks ◽  
Model Based ◽  
Manufacturing Technologies ◽  
Am Processes ◽  
Final Consumer

AbstractAdditive manufacturing (AM) is a versatile technology that could add flexibility in manufacturing processes, whether implemented alone or along other technologies. This technology enables on-demand production and decentralized production networks, as production facilities can be located around the world to manufacture products closer to the final consumer (decentralized manufacturing). However, the wide adoption of additive manufacturing technologies is hindered by the lack of experience on its implementation, the lack of repeatability among different manufacturers and a lack of integrated production systems. The later, hinders the traceability and quality assurance of printed components and limits the understanding and data generation of the AM processes and parameters. In this article, a design strategy is proposed to integrate the different phases of the development process into a model-based design platform for decentralized manufacturing. This platform is aimed at facilitating data traceability and product repeatability among different AM machines. The strategy is illustrated with a case study where a car steering knuckle is manufactured in three different facilities in Sweden and Italy.

scholarly journals Robust scheduling and dispatching rules for high-mix collaborative manufacturing systems

2021 ◽  
Author(s):  
Andrea Maria Zanchettin
Keyword(s):  
Manufacturing Systems ◽  
Production Systems ◽  
Adaptive Scheduling ◽  
Dispatching Rules ◽  
Numerical Verification ◽  
Robust Scheduling ◽  
Collaborative Manufacturing ◽  
Processing Times ◽  
Increasing Demand ◽  
Variable Production

AbstractMotivated by the increasing demand of mass customisation in production systems, this paper proposes a robust and adaptive scheduling and dispatching method for high-mix human-robot collaborative manufacturing facilities. Scheduling and dispatching rules are derived to optimally track the desired production within the mix, while handling uncertainty in job processing times. The sequencing policy is dynamically adjusted by online forecasting the throughput of the facility as a function of the scheduling and dispatching rules. Numerical verification experiments confirm the possibility to accurately track highly variable production requests, despite the uncertainty of the system.

Reale Daten für Simulationen im digitalen Zwilling*/Real data for simulation in the digital twin -Study on how to record Profinet data and reproduce them in complex simulation environments

2019 ◽  
Vol 109 (09) ◽  
pp. 662-666
Author(s):  
M. Chemnitz ◽  
O. Heimann ◽  
A. Vick
Keyword(s):  
Twin Study ◽  
Manufacturing Systems ◽  
Production Systems ◽  
Real Data ◽  
Control Data ◽  
Cause Analysis ◽  
Digital Twin ◽  
Root Cause ◽  
Complex Simulation ◽  
Complex Manufacturing Systems

Die hohen Anforderungen an moderne Fertigungssysteme erfordern leistungsfähige Engineering-Lösungen. Wie man die Identifikation von Fehlerursachen in komplexen Anlagen erleichtert, wurde in einer Machbarkeitsstudie des Fraunhofer IPK im Auftrag von Siemens DI FA untersucht. In der vorgestellten Lösung werden die Daten der Anlage auf Feldbusebene erfasst und in den digitalen Zwilling eingespeist. So kann das Verhalten der Komponenten taktgenau nachvollzogen werden. Dies elaubt einen tiefen Einblick in das System und unterstützt so bei der Fehlerbehebung.   Powerful engineering tools are required to keep modern production systems manageable. Siemens DI FA and the Fraunhofer IPK present a novel tool for root cause analysis within complex manufacturing systems. The solution combines a CAx plant model with control data recorded from the field bus. This creates a comprehensive digital twin, allowing to analyse past machine behavior with bus clock resolution.

scholarly journals A Comparison between Conventional Tilled and Bicropped Winter Wheat Grown in Monoculture over Four Years

2015 ◽  
Vol 5 (1) ◽  
pp. 24
Author(s):  
J. M. Finnan ◽  
J. I. Burke ◽  
T. M. Thomas
Keyword(s):  
Winter Wheat ◽  
Nitrogen Uptake ◽  
White Clover ◽  
Production Efficiency ◽  
Production Systems ◽  
External Input ◽  
Wheat Crop ◽  
N Application ◽  
Grain Yields ◽  
A Site

<p>A four year experiment was conducted at a site in the south-east of Ireland in which medium and high input conventional winter wheat production systems were compared to no input and low input systems in which winter wheat was direct drilled into an understory of white clover. Whole crop and grain yields from all systems were strongly related to external input levels, yields from bicropped treatments were poor. Nitrogen uptake and grain yields from the conventional treatments declined during the course of the study whereas nitrogen uptake and yields from bicropped treatments were more stable. Fertiliser N application significantly depressed biological production efficiency and altered biomass partitioning. The proportion of biomass partitioned to the stem decreased with fertiliser N, differences between treatments persisted until final harvest. Although the clover sward was still present in the fourth year, this component of the bicrop was gradually replaced by weeds as the experiment progressed in spite of several attempts to control weeds. It is suggested that further research is needed to identify a clover management strategy which ensures the persistence of the white clover sward and allows it to enrich soil fertility in such a way as to be of benefit to the accompanying wheat crop.</p>

Concept to Support the Flexibility of Manufacturing System through Reconfigurable Structure Based on Modular Design

2015 ◽  
Vol 816 ◽  
pp. 536-546
Author(s):  
Vladimír Rudy ◽  
Andrea Lešková
Keyword(s):  
Flexible Manufacturing ◽  
Manufacturing Systems ◽  
Structural Changes ◽  
Modular Design ◽  
Production Systems ◽  
Low Cost ◽  
Modular Construction ◽  
Production Platform ◽  
Flexible Adaptation ◽  
Reconfigurable Structure

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).

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