Vpliv rezalnih orodij in procesnih parametrov na ekonomičnost obdelave jeklene puše

Truden, Aljaž (author), Pušavec, Franci (mentor)

Na ulitku za avtomobilsko industrijo je jeklena puša tista, s katero imamo težave pri obdelavi, saj je obstojnost orodja nizka. Sama puša ima velik razpon trdote, ki se giblje od 230 BHN do 280 BHN. To veliko območje močno vpliva na časovno obstojnost orodja, saj so lahko puše v enem trenutku nižje trdote, v drugem pa višje, zato obstojnost orodja zelo niha. Omejeni smo bili tudi s strani parametrov zaradi velikega premera orodja, ki istočasno obdeluje ?68 in ?223, med katerima je ozka toleranca soosnosti. Zaradi teh težav je bilo treba poiskati nove tehnološke rešitve, s katerimi smo dosegli daljšo obstojnost orodja, zmanjšali potrebo po poseganju v stroj, kar je povečalo delovne ure stroja in prihranke pri orodjih. Pred tehnološkimi spremembami je orodje dosegalo maksimalno 108 obdelovalnih ciklov, sedaj pa jih lahko dosega maksimalno 378. S temi izboljšavami imamo pri tej operaciji 92,66 EUR prihranka letno.

• Language: Slovenian
• Keywords: jeklena puša, struženje, nastavitev rezalne ploščice, geometrija orodja, oblike odrezkov, sestavljena rezalna orodja, orodje, ulitek
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [A. Truden]
• Year: 2023
• Number of pages: XX, 48 str.
• PID: 20.500.12556/RUL-152626
• UDC: 621.941.025:621.887:669.14(043.2)
• COBISS.SI-ID: 183723779
• Publication date in RUL: 01.12.2023

TRUDEN, Aljaž, 2023, Vpliv rezalnih orodij in procesnih parametrov na ekonomičnost obdelave jeklene puše [online]. Bachelor’s thesis. Ljubljana : A. Truden. [Accessed 25 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=152626

Secondary language

• Language: English
• Title: The influence of cutting tools and process parameters on the economy of steel bushing processing

Abstract

In casting for the automotive industry, the steel bushing is the one with which we have problems in processing, as the durability of the tool is low. The bushing itself has a wide range of hardness ranging from 230 BHN to 280 BHN. This large area greatly affects the durability of the tool, as the bushings can be of lower hardness at one moment and higher at the next, so the durability of the tool fluctuates a lot. We were also limited by the parameters due to the large diameter of the tool, which simultaneously processes Φ68 and Φ223, between which there is a narrow axial tolerance. Due to these problems, it was necessary to find new technological solutions, with which we achieved a longer durability of the tool, reduced the need to intervene in the machine, which increased the working hours of the machine and savings on tools. Before the technological changes, the tool achieved a maximum of 108 processing cycles, but now it can achieve a maximum of 378. With these improvements, we save EUR 92.66 per year in this operation.

• Keywords: steel bushing, turning, cutting insert calibration, tool geometry, composite cutting tools, tools, casting