Journal
PROCEEDINGS IN MANUFACTURING SYSTEMS
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Journal PROCEEDINGS IN MANUFACTURING SYSTEMS |
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ISSN 2067-9238 |
George CONSTANTIN Adrian GHIONEA
Series Editorial Team Emilia BĂLAN Sorin Mihai CROITORU Costel Emil COTEŢ
Editorial Council Traian AURITE, Alain GERARD, Csaba GYENGE, Florin IONESCU, Constantin ISPAS, Branko KATALINIK, Stanislav LEGUTKO, Aurel OPREAN, Eugen PAY, Daniel PLAY
Bucharest, 2011
University “Politehnica” of Bucharest Machines and Production Systems Department Splaiul Independenţei 313, sector 6 060032 Bucureşti, România Tel: (+4021) 402 94 20 http://www.icmas.eu
Editura Academiei Române Calea 13 Septembrie nr. 13, sector 5 050711 Bucureşti, România Tel.: (4021) 318 81 46, (4021) 318 81 06, Fax: (4021) 318 24 44 E-mail: edacad@ear.ro http://www.ear.ro
Peer reviewers: Aurel OPREAN, Alain GERARD, Daniel PLAY
Editorial assistant: Irina FILIP Computerized editing: George CONSTANTIN, Mariana ŞERBĂNESCU
Gheorghe AMZA, Romania Traian AURITE, Romania Laurean BOGDAN, Romania Octavian BOLOGA, Romania Ioan BONDREA, Romania Gheorghe BRABIE, Romania Daniel BRUN-PICARD, France Olivier CAHUC, France Gavrilă CALEFARIU, Romania Ilie CATANĂ, Romania George CONSTANTIN, Romania Radu COTEŢIU, Romania George DOBRE, Romania George DRĂGHICI, Romania Gabriel FUMUŞANU, Romania Alain GERARD, France Adrian GHIONEA, Romania Marius GURAN, Romania Csaba GYENGE, Romania Florin IONESCU, Germany Sorin IONESCU, Romania Mihaiela ILIESCU, Romania Kostadin KOSTADINOV, Bulgaria Ivan KURIC, Slovakia Stanislav LEGUTKO, Poland Nicolae MARINESCU, Romania Josef NOVAK-MARCINCIN, Slovak Republic Constantin MINCIU, Romania Sevasti MITZI, Grece Vasile NĂSUI, Romania Tadeusy NIESZPOREK, Poland Nicolae OANCEA, Romania Viorel PĂUNOIU, Romania Daniel PLAY, France Nicolae PREDINCEA, Romania Dan PRODAN, Romania Ştefan Dan PASTRAMĂ, Romania Tomasz RYDZKOWSKI, Poland Jean François RIGAL, France Ion SIMIONESCU, Romania Laurenţiu SLĂTINEANU, Romania Ştefan STAICU, Romania Constantin STĂNCESCU, Romania Eugen STRĂJESCU, Romania Ioan TĂNASE, Romania Miron ZAPCIU, Romania |
Journal
PROCEEDINGS IN MANUFACTURING SYSTEMS
□ Volume 6, Issue 3, 2011
· L ubomir DIMITROV, Fani VALCHKOVA,
· Ludmila NOVAKOVA-MARCINCINOVA, Veronika FECOVA, Miroslav JANAK,
·
Jozef MAJERÍK, Jaroslav JAMBOR,,
Technological aspects of manufacturing process programming Contributions regarding structural and functional analysis of a Gantry industrial robot NC axes · Valeriu MIRONESCU, Aurelian VLASE, Technological reliability analysis with the multivariate statistics drian StereAugmented virtual reality applications
· Adrian POPESCU, George ENCIU, Data acquisition regarding the landmarks achieved inside a manufacturing flexible cell
· Georgi TODOROV, Borislav ROMANOV, Konstantin KAMBEROV, S vetoslav STOEV,Structural FE dynamic simulation of complex casings for power tool
PROBLEMS WITH 3D DATA EXCHANGE BETWEEN CAD SYSTEMS USING NEUTRAL FORMATS
Lubomir DIMITROV1,*, Fani VALCHKOVA2
1) PhD, Assoc.
Prof., Dean, Mechanical Engineering Faculty, Technical University of
Sofia, Bulgaria 2)
MEng, PhD
Student, Mechanical Engineering Faculty, Technical University of Sofia,
Bulgaria
Abstract:
This
paper is focused on the results of 3D data exchange between CAD systems
using neutral data formats such as STEP and IGES which have addressed
the issue of the data transfer, but these are incapable of handling
design intent information generated by
contemporary
CAD systems. Accentuate are problems
of
loss and
change of the graphic
information, topological data, naming and
coordinates after the
transformation.
This project is called “CMS in CATIA” and is executed by the Engineering
and Integration Office on Compact Muon Solenoid (CMS) Experiment, which
is part of the Large Hadron Collider (LHC) at the European Counsel for
Nuclear Research – CERN, Switzerland.
The 3D models have been created at Institutes and
Universities which are collaborators in the CMS experiment in different
CAD environments and different version of the systems.
Key words: 3D models, CAD systems, graphic information, neutral formats.
THE OPTIMAL LOCATION LOGISTICS OF MANUFACTURING RESOURCES in CASE OF FOUR PIECES MANUFACTURE OF AN INTAKE SYSTEM
Marian Andrei GURĂU1,*
1)
PhD student, Faculty of
Engineering and
Technological Systems Management,
University “Politehnica” of Bucharest, Romania
Abstract:
In
this article the optimal location logistics of manufacturing resources
is analyzed, for the manufacture of four parts: intake gallery, square
flange, injector support and body of the component product intake
system. After a preliminary analysis was found that the best method of
location of the resources in this case is the links method. For its
implementation will be completed the study stages: grouping of parts
that are processed on workstations to be located; development of matrix
location; the representation of theoretical location and adapting the
theoretical location to real conditions of the workshop.
Key words: logistic industry, intake system, links method, optimal location, matrix location.
SOME ASPECTS OF RAPID PROTOTY
Ludmila
NOVAKOVA-MARCINCINOVA1,*,
Veronika FECOVA2,
Miroslav JANAK3
1)
Ing., PhD. Student, Department of Manufacturing
Technologies, Technical University of Kosice, Presov, Slovakia
2)
Ing., PhD. Student, Department of Manufacturing
Technologies, Technical University of Kosice, Presov, Slovakia
3)
Ing., PhD., Assistant, Department of Manufacturing
Technologies, Technical University of Kosice, Presov, Slovakia
Abstract:
Rapid
Prototyping (RP) can be described as a group of technologies used to
quickly manufacturing a scale model of a part or product using
three-dimensional computer aided design (CAD) data. What is commonly
considered to be the first RP technique, Stereolithography, was
developed by 3D Systems of Valencia, CA, USA. The company was founded in
1986, and since then, a number of different RP techniques have become
available.
Key words: Rapid Prototyping (RP), RP methods, RP utilization, gearbox, CAD model, prototype.
TECHNOLOGICAL ASPECTS OF MANUFACTURING PROCESS
PROGRAMMING
Jozef MAJERÍK1,*, Jaroslav JAMBOR2 1)
PhD, Eng, Lecturer, Special Subject Department, Dubnica Institute of
Technology, Dubnica nad Vahom, Slovakia 2)
PhD, Eng, Lecturer, Didactics Techniques and Educational Technologies
Department, Dubnica Institute of Technology, Slovakia
Abstract: This publication deals with simulation process and NC-code generating in the system CATIA V5R20. In this superior CAD/CAM system it is possible to manufacture models with very complicated shapes and NC-code then finally transferred into the operating systems of machining centers. Each machining technology must be supported by selection of the relevant cutting tools and cutting materials, design and use of plant and machinery suitable for innovative machining technology, which benefits must always be continuous reduction in production time and mechanical machining time in each operation, subject to the quality and accuracy of the product. Production processes have to be optimized by CAD/CAM systems application in the technological preparation of production and use of innovation in programming CNC machine tools
Key words:
cutting conditions, CAD/CAM systems, Computer Aided Design, Computer
Aided Manufacturing, postprocessor, programming.
CONTRIBUTIONS
REGARDING STRUCTURAL AND FUNCTIONAL ANALYSIS
OF A
Adrian NICOLESCU1,*,
Cezara AVRAM2
1)
2)
Abstract:
The
paper presents the
original contributions on
structural and functional
analysis
of
numerical controlled (NC) axes of industrial robots (IR) with
electric driving system.
Main purpose of the paper is to define and validate an
assisted selection procedure of IR’s NC axes
optimal structure imposed specification accordingly IR’s output for
performance level. For this purpose a complex assisted study
on NC axes optimum structure of a
gantry robot for part handling
application and both IR’s NC axes specific performance parameters and their
influence on robot’s overall
performances has been performed. The method was
applied for actual performance evaluation of NC
axes structure and electric driving systems performances of a GUDEL
gantry IR. The results of study had shown good
conformity of procedure and real robot design as well as how real robot
design / overall performances may be improved.
Key words: industrial robots, numerically controlled axes, optimal design, software modelling, electric driving systems.
THEORETICAL AND PRACTICAL CONSIDERATIONS ABOUT BEARING LUBRICATION
Valeriu MIRONESCU1,*,
Aurelian VLASE2
1)
2)
PhD, Prof., Machine Building Technology Department, University „Politehnica”
of Bucharest, Romania
Key words: lubricating, oils, greases, viscosity.
TECHNOLOGICAL RELIABILITY ANALYSIS WITH THE MULTIVARIATE STATISTICS
Adrian Stere PARIS1,*, Ioan TĂNASE2, Constantin TÂRCOLEA3 1)
Assoc. Prof., PhD, Department of Materials Technology and Welding,
University Politehnica, 2)
Prof., PhD, MSP Department , University Politehnica, 3)
Prof., PhD, Department of Mathematics, University Politehnica,
Abstract:
The lifetime evolution of the manufacturing accuracy of the machine-tools,
defined as technological reliability, is an important research domain. The
chosen practical case is connected with the accuracy of a set of universal
milling machines. A pre-selection of field data using the Spearman technique
was developed. Five characteristics of manufacturing accuracy were selected
from the field experimental data for a detailed analysis. After a brief
introduction in the multivariate analysis, the main side of the paper covers
a dimensional reduction of the accuracy attributes. Based on the factor
analysis method, using XLSTAT 7.5.2 software and the determining the numbers
of factors for a given level of significance, a given alpha risk.
Key words: technological reliability, factor analysis, XLSTAT software.
DATA ACQUISITION REGARDING THE LANDMARKS ACHIEVED INSIDE A MANUFACTURING
FLEXIBLE CELL
1)
PhD - student, 2)
Assoc. Prof.,
Key words:
STRUCTURAL FE DYNAMIC SIMULATION OF COMPLEX CASINGS
FOR POWER
Georgi TODOROV1,*,
Borislav ROMANOV2,
Konstantin KAMBEROV3,
Svetoslav STOEV4
1)
PhD, Prof., Head of Laboratory “CAD/CAM/CAE in Industry”, 2)
3)
4)
Abstract: The presented study aims to overview the development a detailed simulation model for analysis of dynamic behavior of complex casings for power tool, using virtual prototype. Developed simulation model has high level of geometry detail which allows evaluating its dynamic parameters with sufficient accuracy. Various materials application for the examined casings is reviewed too. The target is to demonstrate the approach for dynamic simulation of high loaded mechanical components using virtual prototype and its advantages when applied at earlier design stage. Future steps for design optimization are marked, based on the obtained simulations results.
Key words: power tool, structural, dynamic simulation, virtual prototype, optimization.
RAPID MOULD MANUFACTURING FOR SCULPTURED SHAPED PART BY REVERSE ENGINEERING AND CAD/CAM
Tadi SURESH BABU1,*,
Palankannayil George SIJI2
1) Eng, Instructor/Trainer, Department of Mechanical Engineering
Technology, Yanbu, Saudi Arabia
2) Eng, Research Assistant,
Abstract:
Meeting the dead lines to retain the customer in this competitive
market, complex 3D moulds are a challenge before Die and Mould
manufacturers, that too when it is to produce the part without the aid
of drawings or design data in a very short time. As manufacturers strive
to further optimize the development cycles to maintain market
competitiveness, the use of reverse engineering technologies have
started to play the pivotal role in the product development cycles.
Reverse Engineering has become an increasing part of product development
process chains resulting in reduced time to market and reduced
development costs. Integration of this technology into existing
development cycles provides tools to maintain design integrity during
development stages as well as between successive product lines. One
aspect of Reverse Engineering is the interfacing of data obtained from
this technology to various manufacturing processes. This paper discusses
about the work carried out at Central Institute of Tool Design to
develop the part by integrating Reverse Engineering process loop and
CAD\CAM application to optimize the time and cost in real time tool and
mould production.
Key words: List Reverse Engineering, mould design, coordinate measuring machine, point cloud data.
Electronic mail: orgcom@icmas.eu /
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