magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo
Jure Kuralt (Author), Davorin Kramar (Mentor)

Abstract

Pri odrezavanju plastičnih mas prihaja do deformacij obdelovancev po obdelavi. Do tega prihaja zaradi slabe toplotne prevodnosti plastičnih mas, ki povzročijo veliko hitrejše ohlajanje površine po obdelavi v primerjavi z notranjimi deli obdelovanca. Posledično pride do zaostalih napetosti, ki povzročajo ukrivljanje kosov po obdelavi. Z metodo načrtovanja eksperimentov se je v nalogi optimiziralo parametre frezanja za čim manjše ukrivljanje kosov po obdelavi, obenem pa še čim krajši čas obdelave. Ugotovljeno je bilo, da imata največji vpliv na ukrivljanje podajanje in globina reza, nekoliko manjši vpliv pa vrtljaji vretena. Z bolj blagimi parametri kot se obdeluje (majhno podajanje in majhna globina reza), manjše bodo deformacije kosov po obdelavi.

Keywords

magistrske naloge;frezanje;plastične mase;deformacija obdelovancev;metoda načrtovanja eksperimentov;optimizacija;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FS - Faculty of Mechanical Engineering
Publisher: [J. Kuralt]
UDC: 621.914:678(043.2)
COBISS: 16657179 Link will open in a new window
Views: 887
Downloads: 216
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: English
Secondary title: Optimizing the parameters of milling plastics to reduce deformation after machining
Secondary abstract: When cutting plastics, workpieces are deformed after machining. This is due to the poor thermal conductivity of plastics, which results in a much faster cooling of the surface after processing than the internal parts of the workpiece. Consequently, there are residual stresses that cause bending of workpieces after processing. With the Design of Experiments method, the milling parameters were optimized in order to minimize bending of workpieces after processing, while at the same time minimizing the processing time. It has been found that the greatest impact on bending has feed rate and depth of the cut, while a slightly lower impact has spindle speed. If cutting is done less intensively (small feed rate and a small depth of the cut), the deformation of the pieces after processing will be reduced.
Secondary keywords: milling;plastics;workpieces deformation;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, 62 str.
ID: 11149677
Recommended works:
, magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo
, magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo
, magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo
, diplomska naloga visokošolskega programa
, magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo