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PROCEEDINGS IN MANUFACTURING SYSTEMS

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

 

 

 

 

EDITURA ACADEMIEI ROMÂNE

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

 

 

Reviewing Committee

 

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

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Journal

 

PROCEEDINGS

IN MANUFACTURING SYSTEMS

 

Volume 5, No. 3,  2010

 

   

 

Contents

 

·   Florin IONESCU, Ion BOSTAN, Valeriu DULGHERU, Dragoş AROTĂRIŢEI, George CONSTANTIN, Florin STRATULAT, Mechatronics between dream and actual reality, pp. 121-136

 

·   Jana ŠTEININGEROVÁ, Jozef MAJERÍK,   Surface quality analysis of 102Cr6 bearing steel after CC6050 insert by hard turning and by SG grinding wheel, pp. 137-142

 

·   Michael DUSCHA, Fritz KLOCKE, Anna d’ENTREMONT, Barbara LINKE, Hagen WEGNER,       Investigation of temperatures and residual stresses in speed stroke grinding via FEA simulation and practical tests, pp. 143-148

 

·   Zuzana MURČINKOVÁ, Computational methods for wider application of short-fiber composite, pp. 149-152

 

·   Jean-Yves K’NEVEZ, Mehdi CHERIF, Miron ZAPCIU, Alain GERARD, Experimental characterization of robot arm rigidity in order to be used in machining operation, pp. 153-156

 

·   Radu-Eugen BREAZ, Octavian BOLOGA, Gabriel RACZ, Valentin OLEKSIK, Improving CNC machine tools accuracy by means of  the circular test and simulation, pp. 157-162

 

·   Adrian PÎSLĂ, Tudor IRIMIAŞ, Romică MUNTEAN, Elements for modeling change management, pp. 163-166

 

·   Iuliana PISCAN, Nicolae PREDINCEA, Nicolae POP, Finite element analysis of bolted joint, pp. 167-172

 

·    Katarina MONKOVA, Peter MONKA, The possibilities of Group Representative utilization at NC Machining within New CAPP Software, pp. 173-176

 

·    Gabriel Vasile ONIŢĂ, Paul Dan BRÎNDAŞU, Livia Dana BEJU, Aspects regarding product lifecycle management of cutting tools, pp. 177-182

 

·    Vladimir SCHOR, Gheorghe SINDILĂ, Diana POPESCU, Nicoleta CĂRUŢAȘU, Beatrice NICA, System and methodology for the analysis, diagnosis and correction of human locomotion, pp. 183-186

 

 

pp 121-136

 

MECHATRONICS BETWEEN DREAM AND ACTUAL REALITY

 

 View full text

Florin IONESCU1, Ion BOSTAN2, Valeriu DULGHERU3, Dragoş AROTĂRIŢEI4,

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

 View full text

 

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

 View full text

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

 View full text

 

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

 View full text

 

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  
OF  THE CIRCULAR TEST AND SIMULATION

 

 View full text

Radu-Eugen BREAZ1, Octavian BOLOGA2, Gabriel RACZ3, Valentin OLEKSIK4

 

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

 

 View full text

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

 

 View full text
 

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

 View full text

 

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

 View full text

 

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

 

 View full text

Vladimir SCHOR1, Gheorghe SINDILĂ2, Diana POPESCU3, Nicoleta CĂRUŢASU4, Beatrice NICA5

 

 

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   /