Infact not fiction

1995 ◽  
Vol 15 (1) ◽  
pp. 34-34
Author(s):  
Clive Loughlin
Keyword(s):  
Assembly Line ◽  
New Product ◽  
Assembly System ◽  
Assembly Operation ◽  
Flexible Assembly ◽  
Change Mechanism ◽  
Assembly Operations ◽  
Shuttle System

Examines the development of a flexible assembly machine, GENASYS [Generic Assembly System] which has been designed to produce a range of components. The machine comprises two manipulator arms, a tool changer and a shuttle system for the pallets on which the assembly operations are performed. Each manipulator is able to select a different tool from a carousel tool change mechanism that can accommodate up to 20 different tools. The machine can easily be programmed for a specific assembly operation and low batch numbers can be produced economically. Timescales for the design and installation of the machine are considerably shorter than for a dedicated assembly line and once installed in a factory new product variants can be accommodated within very short timescales and with low‐retooling costs.

scholarly journals Exploring the application of machine learning to the assembly line feeding problem

2021 ◽  
Author(s):  
Moretti Emilio ◽  
Tappia Elena ◽  
Limère Veronique ◽  
Melacini Marco
Keyword(s):  
Machine Learning ◽  
Assembly Line ◽  
Optimal Solution ◽  
Product Variety ◽  
Supervised Machine Learning ◽  
Assembly System ◽  
Optimization Approach ◽  
Feeding Problem ◽  
Managerial Implications ◽  
Multiple Feeding

AbstractAs a large number of companies are resorting to increased product variety and customization, a growing attention is being put on the design and management of part feeding systems. Recent works have proved the effectiveness of hybrid feeding policies, which consist in using multiple feeding policies in the same assembly system. In this context, the assembly line feeding problem (ALFP) refers to the selection of a suitable feeding policy for each part. In literature, the ALFP is addressed either by developing optimization models or by categorizing the parts and assigning these categories to policies based on some characteristics of both the parts and the assembly system. This paper presents a new approach for selecting a suitable feeding policy for each part, based on supervised machine learning. The developed approach is applied to an industrial case and its performance is compared with the one resulting from an optimization approach. The application to the industrial case allows deepening the existing trade-off between efficiency (i.e., amount of data to be collected and dedicated resources) and quality of the ALFP solution (i.e., closeness to the optimal solution), discussing the managerial implications of different ALFP solution approaches and showing the potential value stemming from machine learning application.

Minimizing the cost of products manufactured by the assembly line

2020 ◽  
pp. 483-487
Author(s):  
N.I. Aristova
Keyword(s):  
Computer Modeling ◽  
Assembly Line ◽  
Scientific Research ◽  
The Self ◽  
Manufactured Products ◽  
The Cost ◽  
Assembly Operations ◽  
Automation Tools ◽  
Probabilistic Nature ◽  
Product Assembly

A significant criterion for the functioning of an assembly line is to minimize the cost of manufactured products, for the achievement of which approaches are currently used that apply computer modeling and the hierarchical principle of product assembly, the approach, as well as taking into account the probabilistic nature of the assembly operations. An overview of scientific research aimed at solving these problems is given. An approach has been proposed that makes it possible to assess the efficiency of production in the self-reproduction of automation tools by the criterion of minimizing the cost of manufactured products.

scholarly journals The Concept of Flexible Assembly System with Fuzzy Missions and Self-Organization

1998 ◽  
Vol 31 (7) ◽  
pp. 77-80
Author(s):  
Vasile Enache ◽  
Gheorghe Boncoi ◽  
Gheorghitã Drãghici
Keyword(s):  
Self Organization ◽  
Assembly System ◽  
Flexible Assembly

Autonomous Control of Non-Silicon MEMS Flexible Micro-Assembly Line

2014 ◽  
Vol 496-500 ◽  
pp. 1468-1472
Author(s):  
Gao Yang Zhang ◽  
Xin Jin ◽  
Zhi Jing Zhang
Keyword(s):  
Assembly Line ◽  
High Volume ◽  
Research Community ◽  
Autonomous Control ◽  
Assembly System ◽  
Micro Fabrication ◽  
Micro Assembly ◽  
Wide Range ◽  
Micro Systems ◽  
Real Challenge

A wide range of micro-components can today be produced using various micro-fabrication techniques. The efficient high volume assembly of complex micro-systems consisting of vast single components (i.e., hybrid micro-systems) is, however, a difficult task that is seen to be a real challenge for the robotic research community. It is necessary to conceive flexible, highly precise and fast micro-assembly methods. In this paper, a frame of a micro-assembly system in the form of flexible micro-assembly line and its autonomous control is presented. Implementation of the control system are described and the procedure of autonomous control is described as well.

Virtual Assembly Operation Modeling Based on Colored Petri Net

2010 ◽  
Vol 431-432 ◽  
pp. 237-240 ◽  
Author(s):  
Peng Chen ◽  
Ping Jun Xia ◽  
Yue Dong Lang ◽  
Ying Xue Yao
Keyword(s):  
Petri Net ◽  
Early Stage ◽  
Virtual Assembly ◽  
Assembly System ◽  
Colored Petri Net ◽  
Stage Design ◽  
Assembly Operation ◽  
Cpn Tools ◽  
Early Stage Design ◽  
Mathematical Presentation

In this paper, a Colored Petri Net modeling method for early stage design of virtual assembly operation is presented. The characteristics of virtual assembly system, Petri Net and Colored Petri Net are analyzed. Some previous work in Petri Net application in assembly and virtual assembly system is discussed. The theoretical aspects of Colored Petri Net are introduced mathematically. Based on the mathematical presentation and the process of fasteners assembly operation, a Colored Petri Net model is constructed for the simulation of assembly operation in virtual environment. With CPN Tools software package, the simulation for evaluating the feasibility of modeling is implemented. It is demonstrated that the modeling approach can support the early stage design of virtual assembly system.

The Factory of the Future? The Contradictory Restructuring of an Assembly Line in France

2020 ◽  
pp. 118-136
Author(s):  
Juan Sebastian Carbonell
Keyword(s):  
Economic Crisis ◽  
Assembly Line ◽  
New Technologies ◽  
Industrie 4.0 ◽  
Labour Process ◽  
The Future ◽  
Factory Of The Future ◽  
Assembly Operations

This paper studies how the introduction of new technologies and a new organiza-tion of work transforms the labour process at an assembly line of the PSA group in France. The firm presents the new organization as an innovative modernization bringing forward the "Factory of the Future" through concepts directly inspired by Industrie 4.0 and Industrie du futur. At the same time, this modernization also re-sponds to the need for the plant to become more competitive in order to face the consequences of the economic crisis of 2008. Drawing from data obtained through fieldwork (interviews with workers, union representatives and internal documents), the author shows that behind the rhetoric of modernization and industrial excel-lence, the firm intensifies work in assembly operations and workers lose autono-my.

A Productivity Improvement of a Cookware Assembly Line

2015 ◽  
Vol 799-800 ◽  
pp. 1398-1402 ◽  
Author(s):  
Jongrak Niamsawan ◽  
Suksan Prombanpong
Keyword(s):  
Cycle Time ◽  
Assembly Line ◽  
Line Balancing ◽  
Productivity Improvement ◽  
Motion Study ◽  
Machine Layout ◽  
Workplace Organization ◽  
Bottle Neck ◽  
Assembly Operations ◽  
Working Method

This research objective is to improve the productivity of cookware assembly line by means of time and distance reductions. The motion study and line balancing techniques were applied to the entire assembly operations. A bottle neck was identified to where the operation with inadequate machine layout and workplace organization, including the unbalanced workloads. The new workplace layout and new working method for operators were designed and implemented as well as balancing the assembly line. Specifically, the conveyor speed and duration between the consecutive workpieces in the production line were adjusted to 0.10 m/s and 50 cm, respectively. The number of operators needed in the process can be reduced from 14 persons to 11 persons. The cycle time for assembling process is decreased from 12 to 5 second.

scholarly journals Safety Times for Multistage Assembly System

2018 ◽  
Vol 2018 ◽  
pp. 1-10
Author(s):  
Goran Lazovic ◽  
Vesna Sesum-Cavic ◽  
Slobodanka Mitrovic ◽  
Slobodan Radojevic ◽  
Nebojsa Dedovic ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Wide Class ◽  
Existence And Uniqueness ◽  
Assembly System ◽  
Exact Results ◽  
Holding Costs ◽  
One Stage ◽  
Uniqueness Of The Solution ◽  
Newsboy Model ◽  
Assembly Operations

Nowadays, a wide class of problems can be solved by using the classical newsboy model. However, in problems where uncertainty of events and randomness are omnipresent, there is a necessity to adapt the existing solutions and/or find new extensions that will properly answer all requirements. This paper considers a multistage assembly system where interrelated assembly operations with independent stochastic operation times should be planned in an optimal way. Delivery of items in a requested time implies that either delay costs or holding costs appear. The goal is to find optimal safety times. We propose an approximate technique based on successive application of the solution of simpler one-stage problem. The generalized mathematical model suggested is built up on the relaxed hypothesis and can be used in multistage assembly networks. The existence and uniqueness of the solution are proven. The preliminary tests are performed and our approximate technique is compared to exact results.

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