Optimizacija putanje alata pri obradi skulptorskih površina glodanjem
Tool path optimization in sculptured surface milling
2015
Authors
Mladenović, GoranContributors
Tanović, LjubodragMilutinović, Dragan
Puzović, Radovan
Glavonjić, Miloš
Željković, Milan
Doctoral thesis (Published version)
Metadata
Show full item recordAbstract
Razvoj obradnih sistema nove generacije i super brzih personalnih računara je doprineo sve češćoj upotrebi mašinskih delova sa skulptorskim površinama u inženjerstvu. Razvijeni postupci obrade skulptorskih površina loptastim glodalom su bili polazna osnova za formiranje analitičkih modela za analizu i optimizaciju projektovane putanje alata što predstavlja i osnovni cilj istraživanja u ovoj disertaciji. Analizom mogućnosti komercijalnih CAD/CAM sistema sa stanovišta obrade skulptorskih površina glodanjem su uočeni nedostaci istih čime je ukazano na mogući prostor za poboljšanja i kvalitetnija rešenja. Sistematizovanim pregledom parametarskog opisa različitih tipova krivih i površina i odgovarajućim diferencijalnim računom nad njima je stvorena osnova za implementaciju istih u razvijenom softverskom sistemu. Istraživanjem je takođe, obuhvaćena izgradnja različitih modela za optimizaciju procesa obrade skulptorskih površina baziranih na različitim kriterijumima optimizacije kao što su: m...aksimalna hrapavost obrađene površine, sile rezanja i ravnomernost hrapavosti obrađene površine. Zbog nepostojanja podataka za usvojenu kombinaciju materijala i geometrije alata i meterijala pripremka razvijen je mehanistički model za predikciju komponenata sile glodanja koji je podrazumevao eksperimentalno određivanje skupa koeficijenata rezanja. Za ovako razvijene modele u disertaciji je razvijen off-line metod višekriterijumske optimizacije putanje alata na bazi učitanih CAD modela izratka i pripremka. Metodi su implementirani u okviru softverskog rešenja koje omogućuje automatsko/interaktivno projektovanje tehnologije obrade za NUMA koja od korisnika ne zahteva veliko iskustvo u CNC tehnologiji. Mašinskom obradom delova na bazi upravljačkih kodova dobijenih iz razvijene aplikacije pokazan je kvalitet projektovanog sistema za proces off-line optimizacije putanje alata. Metrološkom analizom na NUMM je pokazano da je obrada izvršena u okviru dozvoljenog odstupanja čime je potvrđena tačnost generisanja tačaka lokacije alata pomoću razvijenih metoda.
The development of new generation manufacturing systems and super fast personal computers contributed to an increased use of mechanical parts with sculptured surfaces in engineering. The methods developed so far for machining of sculptured surfaces with ball end mill were used as the basis for constructing analytical models for analysis and optimization of the projected tool path, which represents the main research goal of this thesis. The commercial CAD/CAM system analysis of machining capabilities of sculptural surfaces by milling provided more insight into its limitations, pointing towards possible areas for improvement and finding more appropriate solutions. Using a systematic exploration of parametric descriptions for different types of curves and surfaces, and applying appropriate differential calculations, the basis for their implementation was created in the developed software system. The research also included the construction of different models for machining optimization of ...sculptural surfaces, based on various optimization criteria such as: maximum surface roughness, cutting forces and uniformity of surface roughness. A mechanistic model for the prediction of cutting force components, which included experimental determination of a set of cutting coefficients, was developed due to the lack of existing data for the adopted combination of material and tool geometry, as well as the material of the workpiece. For these models, an off-line method was developed for multi-criteria tool path optimization based on the loaded CAD models of the machined part and the workpiece. These methods have been implemented in a software application which enables an automatic/interactive design of manufacturing technology for a numerical control machine which requires very little user experience in CNC technology. The quality and reliability of the developed system for off-line tool path optimization was demonstrated by machining parts using the control code generated by the developed software application. Metrological analysis using a coordinate-measuring machine was used to verify that the machining was performed within the specified tolerance, thereby confirming the accuracy of generating cutter tool path using the methods developed in this thesis.
Keywords:
Skulptorske površine / optimizacija procesa obrade / generisanje putanje alata / CNC обрада / CAD/CAM системи / Tool Path Generation / Sculptured Surfaces / Machining Optimization / CNC Machining / CAD/CAM SystemsSource:
2015Publisher:
- Univerzitet u Beogradu, Mašinski fakultet
URI
http://eteze.bg.ac.rs/application/showtheses?thesesId=3198https://nardus.mpn.gov.rs/handle/123456789/5832
https://fedorabg.bg.ac.rs/fedora/get/o:11561/bdef:Content/download
http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=514665891
https://machinery.mas.bg.ac.rs/handle/123456789/35
Collections
Institution/Community
Mašinski fakultetTY - THES AU - Mladenović, Goran PY - 2015 UR - http://eteze.bg.ac.rs/application/showtheses?thesesId=3198 UR - https://nardus.mpn.gov.rs/handle/123456789/5832 UR - https://fedorabg.bg.ac.rs/fedora/get/o:11561/bdef:Content/download UR - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=514665891 UR - https://machinery.mas.bg.ac.rs/handle/123456789/35 AB - Razvoj obradnih sistema nove generacije i super brzih personalnih računara je doprineo sve češćoj upotrebi mašinskih delova sa skulptorskim površinama u inženjerstvu. Razvijeni postupci obrade skulptorskih površina loptastim glodalom su bili polazna osnova za formiranje analitičkih modela za analizu i optimizaciju projektovane putanje alata što predstavlja i osnovni cilj istraživanja u ovoj disertaciji. Analizom mogućnosti komercijalnih CAD/CAM sistema sa stanovišta obrade skulptorskih površina glodanjem su uočeni nedostaci istih čime je ukazano na mogući prostor za poboljšanja i kvalitetnija rešenja. Sistematizovanim pregledom parametarskog opisa različitih tipova krivih i površina i odgovarajućim diferencijalnim računom nad njima je stvorena osnova za implementaciju istih u razvijenom softverskom sistemu. Istraživanjem je takođe, obuhvaćena izgradnja različitih modela za optimizaciju procesa obrade skulptorskih površina baziranih na različitim kriterijumima optimizacije kao što su: maksimalna hrapavost obrađene površine, sile rezanja i ravnomernost hrapavosti obrađene površine. Zbog nepostojanja podataka za usvojenu kombinaciju materijala i geometrije alata i meterijala pripremka razvijen je mehanistički model za predikciju komponenata sile glodanja koji je podrazumevao eksperimentalno određivanje skupa koeficijenata rezanja. Za ovako razvijene modele u disertaciji je razvijen off-line metod višekriterijumske optimizacije putanje alata na bazi učitanih CAD modela izratka i pripremka. Metodi su implementirani u okviru softverskog rešenja koje omogućuje automatsko/interaktivno projektovanje tehnologije obrade za NUMA koja od korisnika ne zahteva veliko iskustvo u CNC tehnologiji. Mašinskom obradom delova na bazi upravljačkih kodova dobijenih iz razvijene aplikacije pokazan je kvalitet projektovanog sistema za proces off-line optimizacije putanje alata. Metrološkom analizom na NUMM je pokazano da je obrada izvršena u okviru dozvoljenog odstupanja čime je potvrđena tačnost generisanja tačaka lokacije alata pomoću razvijenih metoda. AB - The development of new generation manufacturing systems and super fast personal computers contributed to an increased use of mechanical parts with sculptured surfaces in engineering. The methods developed so far for machining of sculptured surfaces with ball end mill were used as the basis for constructing analytical models for analysis and optimization of the projected tool path, which represents the main research goal of this thesis. The commercial CAD/CAM system analysis of machining capabilities of sculptural surfaces by milling provided more insight into its limitations, pointing towards possible areas for improvement and finding more appropriate solutions. Using a systematic exploration of parametric descriptions for different types of curves and surfaces, and applying appropriate differential calculations, the basis for their implementation was created in the developed software system. The research also included the construction of different models for machining optimization of sculptural surfaces, based on various optimization criteria such as: maximum surface roughness, cutting forces and uniformity of surface roughness. A mechanistic model for the prediction of cutting force components, which included experimental determination of a set of cutting coefficients, was developed due to the lack of existing data for the adopted combination of material and tool geometry, as well as the material of the workpiece. For these models, an off-line method was developed for multi-criteria tool path optimization based on the loaded CAD models of the machined part and the workpiece. These methods have been implemented in a software application which enables an automatic/interactive design of manufacturing technology for a numerical control machine which requires very little user experience in CNC technology. The quality and reliability of the developed system for off-line tool path optimization was demonstrated by machining parts using the control code generated by the developed software application. Metrological analysis using a coordinate-measuring machine was used to verify that the machining was performed within the specified tolerance, thereby confirming the accuracy of generating cutter tool path using the methods developed in this thesis. PB - Univerzitet u Beogradu, Mašinski fakultet T1 - Optimizacija putanje alata pri obradi skulptorskih površina glodanjem T1 - Tool path optimization in sculptured surface milling UR - https://hdl.handle.net/21.15107/rcub_nardus_5832 ER -
@phdthesis{ author = "Mladenović, Goran", year = "2015", abstract = "Razvoj obradnih sistema nove generacije i super brzih personalnih računara je doprineo sve češćoj upotrebi mašinskih delova sa skulptorskim površinama u inženjerstvu. Razvijeni postupci obrade skulptorskih površina loptastim glodalom su bili polazna osnova za formiranje analitičkih modela za analizu i optimizaciju projektovane putanje alata što predstavlja i osnovni cilj istraživanja u ovoj disertaciji. Analizom mogućnosti komercijalnih CAD/CAM sistema sa stanovišta obrade skulptorskih površina glodanjem su uočeni nedostaci istih čime je ukazano na mogući prostor za poboljšanja i kvalitetnija rešenja. Sistematizovanim pregledom parametarskog opisa različitih tipova krivih i površina i odgovarajućim diferencijalnim računom nad njima je stvorena osnova za implementaciju istih u razvijenom softverskom sistemu. Istraživanjem je takođe, obuhvaćena izgradnja različitih modela za optimizaciju procesa obrade skulptorskih površina baziranih na različitim kriterijumima optimizacije kao što su: maksimalna hrapavost obrađene površine, sile rezanja i ravnomernost hrapavosti obrađene površine. Zbog nepostojanja podataka za usvojenu kombinaciju materijala i geometrije alata i meterijala pripremka razvijen je mehanistički model za predikciju komponenata sile glodanja koji je podrazumevao eksperimentalno određivanje skupa koeficijenata rezanja. Za ovako razvijene modele u disertaciji je razvijen off-line metod višekriterijumske optimizacije putanje alata na bazi učitanih CAD modela izratka i pripremka. Metodi su implementirani u okviru softverskog rešenja koje omogućuje automatsko/interaktivno projektovanje tehnologije obrade za NUMA koja od korisnika ne zahteva veliko iskustvo u CNC tehnologiji. Mašinskom obradom delova na bazi upravljačkih kodova dobijenih iz razvijene aplikacije pokazan je kvalitet projektovanog sistema za proces off-line optimizacije putanje alata. Metrološkom analizom na NUMM je pokazano da je obrada izvršena u okviru dozvoljenog odstupanja čime je potvrđena tačnost generisanja tačaka lokacije alata pomoću razvijenih metoda., The development of new generation manufacturing systems and super fast personal computers contributed to an increased use of mechanical parts with sculptured surfaces in engineering. The methods developed so far for machining of sculptured surfaces with ball end mill were used as the basis for constructing analytical models for analysis and optimization of the projected tool path, which represents the main research goal of this thesis. The commercial CAD/CAM system analysis of machining capabilities of sculptural surfaces by milling provided more insight into its limitations, pointing towards possible areas for improvement and finding more appropriate solutions. Using a systematic exploration of parametric descriptions for different types of curves and surfaces, and applying appropriate differential calculations, the basis for their implementation was created in the developed software system. The research also included the construction of different models for machining optimization of sculptural surfaces, based on various optimization criteria such as: maximum surface roughness, cutting forces and uniformity of surface roughness. A mechanistic model for the prediction of cutting force components, which included experimental determination of a set of cutting coefficients, was developed due to the lack of existing data for the adopted combination of material and tool geometry, as well as the material of the workpiece. For these models, an off-line method was developed for multi-criteria tool path optimization based on the loaded CAD models of the machined part and the workpiece. These methods have been implemented in a software application which enables an automatic/interactive design of manufacturing technology for a numerical control machine which requires very little user experience in CNC technology. The quality and reliability of the developed system for off-line tool path optimization was demonstrated by machining parts using the control code generated by the developed software application. Metrological analysis using a coordinate-measuring machine was used to verify that the machining was performed within the specified tolerance, thereby confirming the accuracy of generating cutter tool path using the methods developed in this thesis.", publisher = "Univerzitet u Beogradu, Mašinski fakultet", title = "Optimizacija putanje alata pri obradi skulptorskih površina glodanjem, Tool path optimization in sculptured surface milling", url = "https://hdl.handle.net/21.15107/rcub_nardus_5832" }
Mladenović, G.. (2015). Optimizacija putanje alata pri obradi skulptorskih površina glodanjem. Univerzitet u Beogradu, Mašinski fakultet.. https://hdl.handle.net/21.15107/rcub_nardus_5832
Mladenović G. Optimizacija putanje alata pri obradi skulptorskih površina glodanjem. 2015;. https://hdl.handle.net/21.15107/rcub_nardus_5832 .
Mladenović, Goran, "Optimizacija putanje alata pri obradi skulptorskih površina glodanjem" (2015), https://hdl.handle.net/21.15107/rcub_nardus_5832 .