The article deals with the evaluation of residual stress after machining of surfaces using effective milling strategies programmed by CAM systems. Milling of the shaped parts containing pockets and grooves, the cutting tool must be driven into corners with lower feed rate, because angle of entry, cutting depth increase and then a chip is tamped and leaving from the place of cut is very difficult. Application of standard strategies affects the beginning of tool wear, decreased durability and tool life, raised roughness parameters of the machined surface and increased residual stress. Aspects of efficient milling strategies programmed by CAM systems allow to machine with the entire cutting length of the tool with a constant angle of entry for the entire machining time. These strategies have a positive effect on residual stress in the material. It was confirmed by the machining test of an experimental piece from material Toolox44. The residual stress was measured by non-destructive method with using the device Proto iXRD operating on the principle of X-Ray diffraction. This measurement was realized in cooperation with the Department of Machining and Manufacturing Technology at University of Žilina in Žilina.Keywords: Residual Stress; X-Ray Diffraction; Machining; Milling Strategy; CAM Systems
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