Browsing by Author "Xianning , She"

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    Research and simulation of the machining process of difficult-to-cut materials
    (Lviv Politechnic Publishing House, 2020) Stupnytskyy, Vadym; Xianning , She; Lviv Polytechnic National University
    Heat-resistant and high-alloy steels and alloys are difficult materials to machine. Optimizing the cutting parameters for such materials is a complex and multi-factorial technological process planning task. The paper describes the method of analysis of loading, thermodynamic and stress-strain state of a workpiece while cutting of typical representative of hard-to-cut materials (chromium-nickel alloy IN718) using finite element simulation. Influence of feed rate on cutting force and temperature in the zone of chip formation is given. The paper also analyzes the effect of cutting edge geometry on the thermal and stress state of the workpiece during cutting. Based on the conclusions about the simulation results, an analogy can be made with the processing of such materials. This will significantly reduce the time of technological preparation and decrease the cost of experimental studies.