Optimizacija gladilnega valjanja v trdo
magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo
Abstract
Magistrska naloga obravnava možnost vpeljave postopka gladilnega valjanja v proces izdelovanja pestičev za hladno preoblikovanje. Za izvedbo naloge in optimizacije smo razvili in izdelali napravo za gladilno valjanje. Ker uvajamo nov postopek, smo v ta namen s pomočjo metode načrtovanja eksperimentov določili vplivne parametre procesa in njihove nastavitve. Doseči želimo čim manjšo hrapavosti in čim krajši čas gladilnega valjanja. Ugotovili smo, da so premer gladilne krogle, sila gladilnega valjanja, podajalna hitrost in hrapavost pred-obdelane površine glavni vplivni parametri. Dosegli smo hrapavost površine, ki je primerljiva z brušeno površino. Ugotovili smo, da postopek gladilnega valjanja vpliva na površinsko strukturo materiala. Primerjali smo dosedanji obstoječi tehnološki postopek izdelave pestičev z novo vpeljanim, kjer smo uvedli gladilno valjanje. Izdelali smo primerjalni test poliranja gladilno valjane in brušene površine. Ugotovili smo, da hitreje in nižjo hrapavost poliranja dosežemo pri gladilno valjani površini. Na podlagi tega smo izdelali ekonomsko analizo med tehnološkima postopkoma. Izračun je pokazal, da lahko z uporabo gladilnega valjanja kot nadomestitve postopka brušenja pocenimo izdelavo.
Keywords
magistrske naloge;obdelava;tehnološki postopki;gladilno valjanje;načrtovanja eksperimentov;optimizacija;
Data
| Language: | Slovenian |
|---|---|
| Year of publishing: | 2019 |
| Typology: | 2.09 - Master's Thesis |
| Organization: | UL FS - Faculty of Mechanical Engineering |
| Publisher: | [L. Fišer] |
| UDC: | 621.923.7(043.2) |
| COBISS: |
16957211
|
| Views: | 1144 |
| Downloads: | 169 |
| Average score: | 0 (0 votes) |
| Metadata: |
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Other data
| Secondary language: | English |
|---|---|
| Secondary title: | Hard steel ball burnishing optimization |
| Secondary abstract: | In the thesis the possibility of introducing roller burnishing process to production of cold forming tools has been researched. To perform the analysis a ball burnishing tool/device was developed. Since implementing a new manufacturing process, the optimal process parameters were determined by using design of experiments methods. Burnishing time and resulting roughness needed to be minimized. Diameter of the burnishing ball, burnishing force, feed rate and roughness of the pre-treated surface were found to be the main influencing parameters. A surface roughness comparable to that of the grinded surface was achieved. Effects of burnishing process on the surface structure of material were discovered. Current standard technological process of tool manufacturing was compared with an updated one, where ball burnishing was implemented. A comparative test of polishing a grinded and burnished surface was made. We discovered that faster and lower polishing roughness were achieved with burnished surface. Based on this, an economic analysis between the technological processes was made. Using ball burnishing as a substitute for grinding process the cost of product manufacturing can be reduced. |
| Secondary keywords: | machining;technological processes;roller burnishing;experiments design;optimization; |
| Type (COBISS): | Master's thesis/paper |
| Study programme: | 0 |
| Embargo end date (OpenAIRE): | 1970-01-01 |
| Thesis comment: | Univ. Ljubljana, Fak. za strojništvo |
| Pages: | XXI, 73 str. |
| ID: | 11270621 |
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