High precision machining on high speed machines

• Autorzy: Kopač J.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Modern Machines for precision products for three dimensional machining have by milling over 20.000 rpm. Differences between hard and soft machining have influences on concept of machines. Stiffness and rigidity are characteristics and variables which caused the precision and quality of machined part. Design/methodology/approach: This paper introduce some of interesting modern machine tools with different concept as DCG (Drive in Centre of Gravity - Mori Seiki), LAF (Look Ahead Function on Machine - Sodick), high speed 20.000 - 60.000 rpm, linear drive, etc. The way from idea to machined part will be shown. Findings: To achieve high precision it is necessary to fill out many request function on machine. Results on machined part depend also from machined material (hardness, structure, size of crystals). Research limitations/implications: Engineers job is to prepare the optimal CNC (PNC) program on connection of CAD - CAM software's. After all mentioned factor test work piece is machined and measured. Originality/value: Comparison between results data on plan and measurement shows us the reality and give us decision around high precision product.

Słowa kluczowe

EN

manufacturing; processing; machining; high speed machine tools; precision machining; soft machining; hard machining

PL

produkcja; przetwarzanie; obróbka skrawaniem; obrabiarki do obróbki szybkościowej; obróbka precyzyjna; obróbka CNC; obróbka na twardo

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 24, nr 1
• Strony: 405--412
• Opis fizyczny: Bibliogr. 16 poz., fot., rys.

Twórcy

autor

Kopač J.

• Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, SI-1000 Ljubljana, Slovenia,

Bibliografia

• [1] J. Kopac, Obdelovalni stroji, orodja in naprave (Machine tools, cutting tools and device), Monographic, ISBN 961-6238-99-X, Ljubljana 2005, Slovenia,
• [2] M. Ficko, M. Brezocnik, J. Balic, Oblikovanje prilagodljivega obdelovalnega sistema z genetskimi algoritmi (A model for forming a flexible manufacturing system using genetic algorithms), Stroj. Vestnik 51 (2005) 28-40.
• [3] M. Milfelner, U. Zuperl, F. Cus, Ustvarjanje modela rezalnih sil z uporabo umetne intelligence (Generation of a model for cutting forces using artifical inteligence), Stroj. Vestnik 51 (2005) 41-54.
• [4] F. Cus, M. Sokovic, J. Kopac, J. Balic, Model of complex optimisation of cutting conditions, Journal of Materials Processing Technology 64 (1997) 41-52.
• [5] F. Cus, U. Zupert, Adaptive self-learning controler design for feedrate maximization of machining process. APEM journal (Advances in Production Engineering and Manegement) 2 (2007).
• [6] M. Kamin, Izbolsave horizontalnega obdelovalnega centra (Improving the horizontal machining center), diploma thesis S1159, 2005, Slovenia.
• [7] B. Pucelj, Postavitev in zagon sodobnih obdelovalnih strojev (Instalattion and starting of the modern machine tool), diploma thesis S1192, 2006, Slovenia.
• [8] J. Jurkovic, Razvoj konstrukcijskih elementov iz sestavljenih materialov (Development of design elements from composites material), Doctor thesis, 1995, Slovenia.
• [9] F. Pusavec, J. Jurkovic, J. Kopac, Wear mechanisms and material flow analysis in HS Turning of grey cast iron, COBEF 2007, Brasil.
• [10] S. Jawahir, Sustainable manufacturing: Case studies in dry, near dry, and cryogenic machining, International conference COMAST 2006, Malaysia.
• [11] M. Sokovic, Model of improvement of cermet tool performance by TiN (PVD) coating, Journal of Mechanical Engineering 43 (1997) 129-136.
• [12] M. Sokovic, L. Kosec, L. Dobrzański, Raziskave difuzije skozi stik PVD prekrito orodje iz kermeta/obdelovanec=An investigation of the diffusion across a PVD-coated cermet tool/workpiece interface. Stroj. vestn 48 (2002) 33-40.
• [13] S. Ekonovic, S. Dolinsek, J. Kopac, M. Godec, Prehod iz obicajne v zelo hitro obdelavo in analiza oblikovanja odrezkov (The transmition from the conventional to the high-speed cutting region and chip-formation analysis), Stroj.vestnik 48 (2002) 178-182.
• [14] D. Puc, Karakteristike, postavitev in zagon VHO stroja Sodick MC430L, Characteristics, instalation and drive in of HSC Machine Tool Sodick MC430L, Diploma thesis, Ljubljana 2007, Slovenia.
• [15] L.A. Dobrzanski, D. Pakula, A. Kriz, M. Sokovic, J. Kopac, tribological properties of the PVD and CVD coatings deposited onto the nitride tool ceramics, Journal of Materials Processing Technology, 175 (2006) 179-185.
• [16] K. Golombek, L.A. Dobrzanski, M. Sokovic, Properties of the wear resistant coatings deposited on the cemented carbides substrates in the cathodic arc evaporation process. Journal of Materials Processing Technology 157-158 (2004) 341-347.