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Journal PROCEEDINGS IN MANUFACTURING SYSTEMS |
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ISSN 2067-9238 |
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Editors Adrian GHIONEA, George CONSTANTIN
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, Radu VOINEA
Bucharest, 2010
University “Politehnica” of Bucharest Machines and Production Systems Department Splaiul Independenţei 313, sector 6 060032 Bucureşti, România Tel: (+4021) 402 94 20 E-mail: orgcom@icmas.eu 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: acad. Radu VOINEA, 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 Iooan BONDREA, Romania Gheorghe BRABIE, Romania Paul Dan BRÎNDAŞU, Romania Daniel BRUN-PICARD, France Olivier CAHUC, France Gavrilă CALEFARIU, Romania Ilie CATANĂ, Romania George CONSTANTIN, Romania Mariana CRAIU, Romania Radu COTEŢIU, Romania Valentin DIŢU, Romania George DOBRE, Romania George DRĂGHICI, Romania Cătălin FETECĂU, Romania Adriana FOTA, Romania Gabriel FUMUŞANU, Romania Alain GERARD, France Adrian GHIONEA, Romania Eugen GRECU, Canada 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 Dan PRODAN, Romania Ştefan Dan PASTRAMĂ, Romania Ioan PĂRĂUŞANU, Romania Tomasz RYDZKOWSKI, Poland Jean François RIGAL, France Gheorghe SINDILĂ, Romania Ion SIMIONESCU, Romania Laurenţiu SLĂTINEANU, Romania Ştefan STAICU, Romania Constantin STĂNCESCU, Romania Eugen STRĂJESCU, Romania Ioan TĂNASE, Romania Constantin TÂRCOLEA, Romania Nicolae UNGUREANU, Romania Luige Vladareanu, Romania Miron ZAPCIU, Romania |
Journal PROCEEDINGS IN MANUFACTURING SYSTEMS
□ Volume 5, No. 3, 2010
· Adrian PÎSLĂ, Tudor IRIMIAŞ, Romică MUNTEAN, Elements for modeling
change management, pp. 163-166 MECHATRONICS BETWEEN DREAM AND ACTUAL REALITY
George CONSTANTIN5,
Kostadin KOSTADINOV6, Florin STRATULAT7 Abstract: The paper presents some achievements in complex
modelling and simulation in mechatronics, being
underlined some characteristics of the mechatronics
field together with applications of the mechatronics
design principles. Some aspects of the optimized and integrated design having
as main part the modelling and simulation of the system are presented. The
facilities of the programs used for kinematic and dynamic simulation of
multi-body systems are emphasized. Some mechatronic
systems are presented as examples of modelling and simulation in MATLAB/Simulink (MS), SolidDynamics (SD)
or MotionInventor (MI) programs with accent on
robots for micro and nano manipulations of cells,
industrial robots, and precessional drives. Key words: mechatronic systems,
design, modelling, simulation, analysis, optimization, micro-nano robots, industrial robots, precessional
drives. 1 PhD, Dr. h.c.
mult., Prof., University of Applied Sciences
Konstanz, Germany, Tel./Fax 0049 7531 206 289, E-mail: ionescu@htwg-konstanz.de 2 Acad., PhD, Dr. h.c. mult.,
Prof., Rector, Technical University of Moldova, Republic of Moldova, E-mail: bostan@mail.utm.md 3 PhD, Assoc. Prof., Head of
Theory of Mechanism and Machine Elements Department, Technical University of
Moldova, Republic of Moldova, E-mail: dulgheru@mail.utm.md 4 PhD, Prof., “Gr. T. Popa”University of Medicine and Pharmacy, Iasi, Medical
Bioengineering Faculty, Iasi, Romania, E-mail: darotari@htwg-konstanz.de 5 PhD, Prof., University
“Politehnica” of Bucharest, Machines and Manufacturing Systems Department,
Bucharest, Romania, E-mail: george.constantin@icmas.eu 6 PhD, Assoc. Professor,
Bulgarian Academy of Sciences – Institute of Mechanics, E-mail: kostadinov@imbm.bas.bg 7 PhD, Prof., Assoc. Professor,
University “Politehnica” of Bucharest, Automatics and Industrial Informatics
Department, E-mail: stratulat@gmail.com.de
pp
137-142 SURFACE QUALITY ANALYSIS
OF 102Cr6 BEARING STEEL AFTER CC6050 INSERT BY HARD TURNING AND BY SG
GRINDING WHEEL
Jana ŠTEININGEROVÁ1,
Jozef
MAJERÍK2 Abstract: This paper deals with
analysis of qualitative aspects of machined surface by hard turning with CC6050 cutting ceramics cutting tool and by progressive
grinding with SG grinding wheel on the Seeded Gel grain application. The main area of this article is the analysis
and also the process influences
on surface roughness and Abbott surface profile and microstructure. The applied cutting conditions (parameters) supposed the influence on fatigue strength or wearing resistance, etc. It is possible to appreciate
the complex surface topology evaluation in term of various possible aspects. The main problem of surface integrity resides in the possibility of new theories creation in term of new trends of machining technology. It is necessary to advance functionality
of part surfaces. Key words: surface quality, hard turning, progressive grinding, cutting ceramics CC6050, SG (“seeded gel”) grinding grain, surface roughness. 1 Dubnica
Institute of Technology in Dubnica nad Vahom, Specialistic subjects, University teacher, Sladkovicova 533/20, 01841 Dubnica
nad Vahom, Slovakia, Tel./Fax,: +421918595640, E-mail: januska83@gmail.com 2 Dubnica
Institute of Technology in Dubnica nad Vahom, Specialistic subjects, University teacher, Sladkovicova 533/20, 01841 Dubnica
nad Vahom, Slovakia, Tel./Fax,: +421907409452, E-mail: jozefmajerik@yahoo.com pp
143-148 INVESTIGATION OF TEMPERATURES AND RESIDUAL STRESSES IN SPEED
STROKE GRINDING VIA FEA SIMULATION AND PRACTICAL TESTS
Michael
DUSCHA1, Fritz KLOCKE2, Anna d’ENTREMONT3,
Barbara LINKE4, Hagen WEGNER5 Abstract: The new technology of speed stroke grinding promises to meet
the industrial demand for
a high-efficiency, high-quality
finishing process. The surface layer properties of the workpiece, such as residual stresses, are a vital
factor in the quality of the
workpiece and must be considered when choosing process parameters. This paper discusses
the residual stresses resulting from practical speed stroke grinding tests of hardened steels using CBN grinding wheels, as well as an in-development FEA model for the
thermal aspects of speed stroke grinding. Key words: speed stroke grinding, residual stress,
FEA-simulation. 1 Dipl.-Ing.,
Research Assistant at
WZL, Laboratory
for Machine Tools and Production Engineering
(WZL) of RWTH Aachen University, Steinbachstraße
19, 52074 Aachen, Germany Tel.:
+49 241-80-28185 / Fax: +49 241-80-628185, E-mail address:
m.duscha@wzl.rwth-aachen 2 Prof. Dr.-Ing. Dr.-Ing. E.h. Dr. h.c., Chair of Manufacturing Technology at WZL 3 B.Sc., Research
Student at WZL 4 Dr.-Ing., Postdoctoral Researcher at WZL 5 Dr.-Ing., Chief Engineer of Department Grinding, Forming and Technology Planing at WZL
pp
149-152 COMPUTATIONAL METHODS FOR WIDER APPLICATION OF SHORT-FIBER
COMPOSITE
Zuzana MURČINKOVÁ 1 Abstract: The paper dealt with influence of development of
computational methods to designing the structures in near history and present
period. Moreover, paper dealt with increasing of utilization of composite
materials in last decades and with possibilities of wider application
regarding to specialized computational methods for different kinds of
composites. In case of short-fibre composites it provides the potential
strategy for designing the components with fibre orientation according to
load. Key words: computational method, material, composite, fibre reinforcement,
fibre orientation. 1
PhD, Eng.,
Lecturer, Faculty of Manufacturing Technologies in Prešov,
Technical university Košice, Department of
Technological Devices Design, Štúrova
31, 080 01 Prešov, Slovak
Republic, E-mail: zuzana.murcinkova@tuke.sk
pp
153-156 EXPERIMENTAL CHARACTERIZATION OF ROBOT ARM
RIGIDITY IN ORDER TO
BE USED IN MACHINING OPERATION
Jean-Yves
K’NEVEZ1, Mehdi CHERIF2, Miron ZAPCIU3,
Alain GERARD4 Abstract: Attempts to install a rotating tool at the end of a robot arm poly-articulated
date back twenty years,
but these robots were not designed
for that. Indeed, two essential features are necessary for machining: high rigidity and precision in a given workspace. The experimental results
presented are the dynamic identification of a poly-articulated robot equipped
with an integrated spindle. This study aims to
highlight the influence of the geometric configuration of the robot arm
on the overall stiffness of the system. The spindle is taken into
account as an additional weight on board but also as a dynamical excitation for the robot KUKA KR 240-2. Study
of the robotic machining vibrations shows the suitable directions of movement in milling process. Key words: robot arm, rigidity, milling stability, dynamic identification. [1] University of Bordeaux, LMP (Bordeaux 1- CNRS UMR 5469), 351,
Cours de la Libération, 33405 Talence, France Tel.
+ (33) (0)5 40 00 62 22 , Fax.:+(33) (0)5 40 00 69 64 ; E-mail address: jean-yves.knevez@u-bordeaux1.fr 2
University of Bordeaux , LGM˛B –
IUT Bordeaux 1, 15 rue Naudet,
33175 Gradignan Cedex
France 3 University Politehnica of Bucharest,
MSP department, Spl
Independentei 313, 060032, Romania Tel./Fax.
+40 21 402 9724; E-mail address: zapcium@yahoo.com 4 University of
Bordeaux, LMP (Bordeaux 1- CNRS UMR 5469), 351, Cours de la Libération, 33405
Talence, France
pp
157-162 IMPROVING CNC MACHINE TOOLS ACCURACY BY MEANS
Abstract: This paper presents a method for improving the
accuracy of CNC machine tools by means of a joint approach: experimental
tests and simulation. In the first stage, a circular test was performed, by
means of a special measuring device. The errors shown by the measurements
were evaluated and possible causes were assessed. After running a simulation
process, which took into consideration the phenomena which may cause the
errors, possible solutions for reducing the errors were proposed. Finally,
new measurements validated some of the solutions. The proposed approach is
indented to be use at the shop floor level, so it was kept as straightforward
and fast as possible. Key words: accuracy, circular test, ballbar
transducer, CNC machine tools, simulation. 1
PhD, Assoc. Prof.,.E-mail: radu.breaz@ulbsibiu.ro 2 PhD, Prof.,
Head of Department of Machines and Equipments, E-mail: octavian.bologa@ulbsibiu.ro 3 PhD, Assoc. Prof.,.E-mail:
gabriel.racz@ulbsibiu.ro 4 PhD, Lecturer, E-mail:
valentine.oleksik@ulbsibiu.ro University “Lucian Blaga”
of Sibiu, Department of Machines
and Equipments, Emil
Cioran 4, 550025 Sibiu, Tel./Fax
+40269216062, ext. 450-454/+40269217871
pp
163-166 ELEMENTS FOR MODELING CHANGE MANGEMENT
Adrian
PÎSLĂ1, Tudor IRIMIAŞ2, Romică
MUNTEAN3 Abstract: Economic models
tend to describe individuals behavior, entities or systems in terms of underlying characteristics such as risk attitude, internal and external flows or functional structures. Independent on where
the subject is situated in the real life, this characteristics change through experience triggered on the micro or the macro dimension of the four levels of influence: social, political, technological
and economical. Models usually ignore change because, traditionally are considered in
this way the simplicity of the model, as a necessary condition for modeling. A reason
would be the unclear position
that change takes in building up a model.
In this paper we stress that
modeling the change
management is vital for any
enterprise in order to thrive for a sustainable business.
Key words: change management, enterprise structure, influences, force field diagram. 1 PhD, Professor, Technical
University in Cluj-Napoca, Machine Tools and Industrial Robots, Bd. Muncii, No. 103−105, Tel:
0040264401762, E-mail: adrian.pisla@muri.utcluj.ro
pp
167-172 FINITE ELEMENT ANALYSIS OF BOLTED JOINT
Iuliana PISCAN1, Nicolae PREDINCEA2, Nicolae POP3 Abstract: This paper presents
a theoretical model and a
simulation analysis of bolted joint deformations. The bolt pretension force, friction coefficient and contact stiffness factor
are considered as parameters
which are influencing the joint deformation.
The bolted joint is modeled using
CATIA software and imported
in ANSYS WORKBENCH. The finite element analysis procedure required in ANSYS
WORKBENCH simulation is presented as a predefined process to obtain
accurate results. Key words: joints, bolts, machine tools, FEM, analysis, stiffness. [1] PhD Student,
University “Politehnica” of Bucharest, Machines and Production Systems, , 313 Spl. Independentei, Bucharest,
Romania, E-mail: iuliana.piscan@yahoo.com. 2 PhD, Professor, University “Politehnica” of Bucharest, Machines and Production Systems, E-mail:nicolaepredincea@yahoo.com. 3 PhD, Professor, North University of
Baia Mare, Dr. Victor Babeş
Str., no. 62 / A, Baia Mare, Romania, E-mail: nic_pop2002@yahoo.com.
pp
173-176 The
possibilities of Group Representative utilization at NC
Machining within New CAPP Software
Katarina
MonkovA1,
Peter
Monka2 Abstract: The article deals with the utilization of
group technology inside new software. This software aids the multivariant manufacturing process plans creation and
consequently it supported the processing of information in several versions.
It can be used for optimization according to the selected criteria, for the
generation of technological documentation and NC programs on the basis of hybrid approach. NC program, as one of
process plans form, can be for individual parts generated automatically on the basis
of group representative that is created as 3D model in CAD/CAM system. The
output of CAM module – CL data – is imported into new software application as
the basis of NC program. Key words: CAD/CAM
system, Individual Application
Software – IAS, CAPP, NC program, Group representative. [1] PhD, Assoc.
Prof., Faculty of Manufacturing Technologies, Technical University in Kosice,
Department of Technological Devices Design, Sturova
31, 080 01 Presov, Slovakia, ++421/517723791, E-mail: monkova.katarina@apeiron.eu 2 PhD, Assoc.
Prof., Vice-head, Faculty of Manufacturing Technologies, Technical University
in Kosice, Department of Manufacturing Technologies, Sturova
31, 080 01 Presov, Slovakia, ++421/517723791, E-mail: peter.monka@tuke.sk pp
177-182 ASPECTS REGARDING PRODUCT LIFECYCLE MANAGEMENT OF CUTTING TOOLS
Gabriel Vasile ONIŢĂ1, Paul Dan
BRÎNDAŞU2, Livia Dana BEJU3 Abstract: In this paper we present the concept of product lifecycle
management (PLM) with its main stages presented in a sequential workflow. We
propose a model for analyzing functional requirements of cutting tools,
applied for helical drills and selecting the optimum variant for their design
based on network design and QFD method. The rest of PLM stages such as modeling, simulation, optimization, designing
manufacturing process, manufacturing preparation, production, delivery, use, disposal and recycling are
presented suggesting the important role that an integrated design software
has upon the entire lifecycle of the product. Key words: lifecycle, PLM, helical drill, function, needs, QFD
analysis. [1] Eng., PhD. Student, E-mail: gabriel.onita@ulbsibiu.ro 2 PhD, Professor, E-mail:
dan.brindasu@ulbsibiu.ro 3 PhD,
Professor, E-mail: livia.beju@ulbsibiu.ro University "Lucian Blaga"
from Sibiu, Faculty of Engineering, Machine
and Manufacturing Systems Department, Emil Cioran
street, No.4, Sibiu, Romania, Tel/Fax: 0269217928/
0269212716
pp
183-186 SYSTEM AND METHODOLOGY FOR THE ANALYSIS, DIAGNOSIS AND CORRECTION OF HUMAN LOCOMOTION
Abstract: The paper presents
an innovative system – Ergosim – developed for the
analysis, characterization and correction of human locomotion pattern, which
can be used with very good results in medical rehabilitation situation, for
patients with locomotor problems (due to legs traumatisms,
neurologic disorder, strokes, etc.) and
for improving the locomotor skills of athletes. The
solution adopted by the authors is based on the use of visual feedback,
available as movement curves on a computer screen, which helps the subjects
by bringing to the
consciousness level the automatically
sequences of the movement engrams, naturally controlled at the subcortical level. Descriptions of the electromechanical
subsystem, diagnosis and correction methodologies are provided in this paper. Key words: gait analysis,
gait correction, movement pattern, engrams, Ergosim. 1 Eng., Medisport SRL, Constantin Noica140, Building D, Bucharest, Romania, E-mail:
vschor@yahoo.com 2 PhD, Professor, E-mail: sindila@yahoo.com 3
PhD, Lecturer, E-mail:
diana@mix.mmi.pub.ro 4 PhD,
Lecturer, E-mail:
nicoletacarutasu@yahoo.com 5 PhD, E-mail: beatricenica@yahoo.com For 2, 3
, 4 and 5: University “Politehnica” of Bucharest, Spl. Independentei
313, Sector 6, Bucharest, Romania
Electronic mail: orgcom@icmas.eu /
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