The cutting tool inserts are used in different machining processes and are most often made out of cemented carbide and have different geometries depending on application. During the machining process, the insert is subjected to elevated temperatures and high pressure which cause the insert to be worn out. Depending on the cutting conditions different wear mechanism and wear types appear on the insert. One of the most common wear types are flank wear but according to experts there is a lack of publication in this area and there are not sufficient information about how flank wear affects the thermo-mechanical loads that act on the insert. The present project was performed together with AB Sandvik Coromant with the aim to develop a fundamental understanding of loads on worn cemented carbide inserts during metal cutting. An additional aim is to investigate to which degree of detail the thermo-mechanical loads on the flank wear land (VB) can be modeled with regards to e.g. the angle between the wear land and the cutting direction. This was executed by modeling a worn insert in CAD and then importing the model to the software AdvantEdge, to simulate the cutting process. The results from the simulations are presented with TecPlot as figures showing the temperature and pressure distributions on the insert as well as plots generated in MATLAB showing the contact pressure. While analysing the results it was partly found that varying the VB affected the distribution of load and stresses. It was also found that the temperature decreased as the angle of the flank wear decreased. The highest temperatures were present was along the part of the rake face closest to the cutting edge, as well as at the bottom of the VB. Possible future outlooks in this area of work is to investigate how to get a more refined mesh on the workpiece, in order to optimize the cutting process and its results.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:uu-531321 |
| Date | January 2024 |
| Creators | Strömberg, Susanna, Alteby, Marcus, Gohari, Negar, Askebro, Alice |
| Publisher | Uppsala universitet, Institutionen för materialvetenskap |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | MATVET-Q ; 24003 |
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