Assignment of Labour to a Production Line Depending on Lot Size

2014 ◽  
Vol 474 ◽  
pp. 121-126
Author(s):  
Júlia Kurnátová ◽  
Pavel Važan ◽  
Gabriela Križanová ◽  
Katarína Orihelová
Keyword(s):  
Production Line ◽  
Simulation Optimization ◽  
Lot Size ◽  
Order Processing ◽  
Technological Processes

The paper describes the results of real simulation project in production line. The aim was to optimize the number of workers according to the different orders during one working week, to minimize time for orders realization with using the alternative technological processes, to minimize the length of order processing at maximum the number of workers on the shift. The simulation optimization was used for solution finding.

Simulation optimization as a method for lot size determination

2011 ◽  
Author(s):  
P. Vazan ◽  
O. Moravčík ◽  
D. Jurovatá ◽  
A. Juráková
Keyword(s):  
Simulation Optimization ◽  
Size Determination ◽  
Lot Size

scholarly journals THE CONTROL OF FLEXIBLE AUTOMATED PRODUCTION OF THE SCRAPER CONVEYERS

2021 ◽  
Vol 2 (446) ◽  
pp. 189-197
Author(s):  
L. G. Shpakova ◽  
E. Moraru ◽  
B. N. Feshin ◽  
K. M. Tokhmetova ◽  
Ye. V. Kalashnikova
Keyword(s):  
Energy Consumption ◽  
Control Systems ◽  
Production Line ◽  
Energy Savings ◽  
Optimization Methods ◽  
Automated Production ◽  
Technological Processes ◽  
Industrial Complexes ◽  
Virtual Modeling ◽  
Electromechanical Equipment

The analysis of possible energy saving in in the technological process of production of elements of scraper conveyors containing flexible automated production is given. It consists of complex subordinate aggregate installations consisting of conveyor lines, robot manipulators and tripods. The studied technological processes and control systems for electric drives of actuators are multi-connected, distributed in space, stochastic and multidimensional in the number of control and monitoring coordinates. It is proposed a methodology of reducing energy consumption of actuators by means of physical-virtual modeling and parameterization based on estimates of energy costs, by means of planning factor experiments, steep ascending in the anti-gradient direction of integral quadratic estimates of the control system, which are proportional to the costs of electricity in transient modes of actuators. The methodology, in comparison with the well-known optimization methods, is invariant to the type of products developed in flexible automated production, to the laws of distribution of the semi-finished products flows entering the production line, and is focused on predicting the boundaries of the saved energy and the life of the electromechanical equipment and improving reliability of electric drive control systems operation as a part of industrial complexes. The uniqueness of the method consists in applicability of the developed algorithm of evaluating energy savings and optimizing technological processes according to the criterion of energy consumption in real time in the condi- tions of the probabilistic situation of input parameters, regardless of the selected method of setting the optimal parameters of production line facilities.

scholarly journals INTRODUCTION OF DIGITAL MANAGEMENT METHODS IN THE TECHNOLOGICAL PROCESSES OF FLAX TOW YARN PRODUCTION

2021 ◽  
Vol 51 (1) ◽  
pp. 22-27
Author(s):  
Natal′ya S. Kuznetsova ◽  
Anastasiya G. Shutova
Keyword(s):  
Russian Federation ◽  
Production Line ◽  
Control Methods ◽  
Process Chain ◽  
Technological Processes ◽  
Digital Management ◽  
Yarn Production ◽  
The Subject ◽  
The Russian Federation

The ways of automating the process chain in a short spinning system, when producing combed yarn, are described in the article. The degree of automation of all stages of the process chain is the subject of the article. In particular, the introduction of digital control methods, when using an automatic layer forming hopper of the production line (the device is protected by a patent of the Russian Federation), which increases the quality of semi-finished products by reducing long sliver unevenness and, consequently, by aligning the sliver coils by mass; application of the automatic sliver levelling system, which allows to increase the evenness of the formed sliver, on the card; possibility to equip the spinning rotor with breakage sensors and the pneumatic autolevelling system, which allows to increase the productivity and to reduce the down time, increasing the ratio of the useful time of the spinning machine.

scholarly journals Assessment of Technological Usefulness of Panel Production Line in Shipbuilding Process

2018 ◽  
Vol 25 (s1) ◽  
pp. 134-144
Author(s):  
Tomasz Urbański ◽  
Tadeusz Graczyk ◽  
Michał Taraska ◽  
Remigiusz Iwańkowicz
Keyword(s):  
Heat Input ◽  
Production Line ◽  
Welding Process ◽  
Technical Documentation ◽  
Material Consumption ◽  
Production Lines ◽  
Shipbuilding Industry ◽  
Technological Processes ◽  
Linear Heat ◽  
Large Ship

Abstract This paper presents assessment of technological usefulness of panel production line in prefabrication process of large ship hull sections, in which special attention is paid to producibility of welding operations. Basing on the assessment these authors worked out hierarchy of analyzed sequences of welding technological processes as well as production line stands used for the processes. The assessment was performed on the basis of analysis of a concept of panel production line based on real production lines functioning in shipbuilding industry, as well as technical documentation of typical hull sections of a multi-purpose ferry. The presented analysis took into account impact of technological - constructional parameters onto producibility of welding process of prefabricated sections. Among these parameters the following were numbered: mass of the sections and number of their elements, total length of welds, labour consumption, material consumption as well as linear heat input in welding operations. On the basis of the achieved results, places which worsen effectiveness of production line operation were identified, as a result it was possible to formulate proposals for modernization of flow prefabrication line for hull sections.

A Study on Lot-Size Dependence of Energy Consumption per Unit of Production Throughput Considering Buffer Capacity

2017 ◽  
Vol 11 (1) ◽  
pp. 46-55 ◽  
Author(s):  
Hironori Hibino ◽  
◽  
Masahiro Yamamoto ◽  
Makoto Yamaguchi ◽  
Takayuki Kobayashi ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Quantitative Evaluation ◽  
Production Line ◽  
Buffer Capacity ◽  
Size Dependence ◽  
Lot Size ◽  
Consumption Energy ◽  
Semiconductor Production

A quantitative evaluation and reduction of consumption energy on all production activities and a factory management with focus on consumption energy are necessary for industries. Previous studies were conducted on the formulation of lot-size dependence of energy consumption per unit of production. However, the effect of interprocess buffer capacity was not clarified in the formulation. In this study, the lot-size dependence of the energy consumption per unit of production with consideration of the buffer capacity is formulated. Furthermore, a simulation of a semiconductor production line is performed to verify the validity of the formulation.

scholarly journals APPLYING SMED/QCO TOOL TO IMPROVE THE PRODUCTIVITY AT SCREWING STATION OF HFR ASSEMBLY – A STUDY AT ROBERT BOSCH (I) LIMITED

2014 ◽  
pp. 240-243
Author(s):  
NYSTHA BAISHYA ◽  
SATHISH RAO U
Keyword(s):  
High Pressure ◽  
Production Line ◽  
Lean Manufacturing ◽  
Fuel Injection ◽  
Product Market ◽  
Injection System ◽  
Value Stream Mapping ◽  
Lot Size ◽  
New Production ◽  
Value Stream

Nowadays the industrial product market is increasingly demanding more customized and quality products, forcing the manufacturers to cut down the price, in order to survive in the highly competitive product market. Working on this, Robert Bosch INdia (RBIN) Limited, Bangalore Plant (BanP) designs and produces Diesel systems which make vehicles more cleaner and economical. Bosch has to manufacture products as per the demands of every customer, economically, to maintain being the world’s leading manufacturer of diesel injection systems. Fuel Injection Equipment in diesel engine is the “Heart of the Engine” and plays a major role in its performance, emissions and reliability. Hot Forged Rail (HFR) finds its application in common rail fuel injection system, which stores the fuel at high pressure (1600bar). And at the same time, the pressure oscillation, which is generated due to the high pressure pump delivery and the injection of fuel are damped by the rail volume. Its design varies according to customer requirement and engine design. Therefore, BanP has to produce different types of rails to compete the diesel market in India. In order to be customer centric and productive, BOSCH follows Bosch Production Systems (BPS), the elements of BPS in Lean manufacturing are Value Stream Mapping (VSM), Value Stream Design (VSD) and Value Stream Planning (VSP). The Single Minute Exchange of Die (SMED) is one important lean manufacturing tool to reduce waste and improve production flexibility, allowing lot size reduction and manufacturing flow improvements. Quick Change over (QCO) is a set of activities (preparation, changing and adjustment) which are being carried out in between the production of two varieties to reduce changeover time and to reach the optimum production running. The proposed SMED approach was tested for screwing machines changeovers and the implementation had enabled reduction in setup time, through company’s internal resources without the need for significant investment. The objective of the present study is to implement the SMED/QCO tool approach in RBIN, BanP, HFR production line at screwing station to reduce the changeover time by 90% and improve availability by >42%, thereby eliminating the possibility of investing on new production line to meet customer demand.

scholarly journals Improvement Of The Production Process With The Use Of Selected Kpis

2020 ◽  
Vol 2 (1) ◽  
pp. 307-315
Author(s):  
Czerwińska Karolina ◽  
Andrzej Pacana ◽  
Renata Dwornicka
Keyword(s):  
Production Process ◽  
Production Line ◽  
Global Competition ◽  
Manufacturing Companies ◽  
Technological Processes ◽  
Key Indicators ◽  
Efficiency And Productivity ◽  
Increase Efficiency ◽  
Customer Demands

AbstractFaced with ever-increasing customer demands and global competition, companies are forced to look for production reserves, increase efficiency and productivity. Hence, the need to monitor the use of the machine park has arisen, making it possible to identify waste and production reserves in the implemented technological processes. The aim of the article is to evaluate the effectiveness of the production line of internal frame doors and to analyze the correctness of the use of selected key indicators of the production process effectiveness. This article proposes a response to the problems formulated in manufacturing companies, including practical aspects of the use of specific measures to assess the effectiveness of the use of technical infrastructure. The solutions presented in the article can be used in practice for improvements in production units.

Applying Lean Manufacturing Tool (SMED/QCO) to Overcome Additional Investment for Meeting Customer Needs – A Study at Robert Bosch (I) Limited

2012 ◽  
Vol 622-623 ◽  
pp. 1846-1851
Author(s):  
Baishya Nystha ◽  
Rao U. Sathish ◽  
Diwakar Sharath
Keyword(s):  
High Pressure ◽  
Production Line ◽  
Lean Manufacturing ◽  
Fuel Injection ◽  
Injection System ◽  
Value Stream Mapping ◽  
Lot Size ◽  
New Production ◽  
High Pressure Pump ◽  
Value Stream

Nowadays the market is increasingly demanding more customized products, thus making the manufacturers under the pressure of cost reduction, to survive in the highly competitive market. Working on this, Robert Bosch INdia (RBIN) Limited, Bangalore Plant (BanP) designs and produces Diesel systems which make vehicles more cleaner and economical. To be the world’s leading manufacturer of diesel injection systems, Bosch has to manufacture its very own design to fulfill the requirements for every customers, economically. Fuel Injection Equipment in diesel engine is the “Heart of the Engine” and plays a major role in its performance, emissions and reliability. Hot Forged Rail (HFR) finds its application in common rail fuel injection system, which stores the fuel at high pressure (1600bar). And at the same time, the pressure oscillation, which is generated due to the high pressure pump delivery and the injection of fuel are damped by the rail volume. Its design varies according to customer requirement and engine design. Therefore, BanP has to produce different types of rails to complete diesel market in India. In order to be customer centric and productive, BOSCH follows Bosch Production Systems (BPS), the elements of BPS in Lean manufacturing are Value Stream Mapping (VSM), Value Stream Design (VSD) and Value Stream Planning (VSP). The Single Minute Exchange of Die (SMED) is one important lean manufacturing tool to reduce waste and improve production flexibility, allowing lot size reduction and manufacturing flow improvements. Quick Change Over (QCO) is a set of activities (preparation, changing and adjustment) which are being carried out in between the production of two varieties to reduce changeover time and to reach the optimum production running. The proposed SMED approach was tested for injection machines changeovers in the automotive industry and the implementation had enabled reduction in setup time, through company’s internal resources reorganizations without the need for significant investment. The objective of the present study is to implement the SMED/QCO tool approach in RBIN, BanP, HFR production line to reduce the changeover time by >65% and improve availability by 15%, thereby eliminating the possibility of investing on new production line to meet customer demand.

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