20.500.12556/RUL-147996 Analytical study on critical load and deformation of chip in high-pressure jet assisted machining In machining, particularly of difficult-to-machine materials, chip-breaking with the aim to avoid entangled chips represents an important issue. In contrast to the widely used obstacle-induced chip breaking (e.g., chip former on the rake face of the cutting insert), the use of the high-pressure jet offers a potential for active, load-induced chip control. In this paper, the essential mechanics of the high-pressure jet assisted machining process is revealed by a robust analytical model as an elastic-plastic bending of a helical chip considering the spring-back effect. The description of the helical chip geometry and the determination of the bending moment caused by the jet are adapted to the fundamental model of chip-mechanics. The critical bending moment of the chip breakage is assessed, which could be an important step towards the determination of the critical coolant supply pressure. The model is validated by chip-in-hand radius measurements for various turning conditions over the full range of applied coolant pressure up to chip breakage. turning high-pressure jet helical chip bending elastic-plastic deformations spring back struženje visokotlačno rezanje spiralni odrezki upogib elasto-plastične deformacije povratna deformacija true false true Angleški jezik Slovenski jezik Članek v reviji 2023-07-17 12:55:32 2023-07-17 12:55:38 2023-09-01 12:07:59 0000-00-00 00:00:00 2023 0 0 12 str. Vol. 316, art. 117944 Jul. 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.9 0924-0136 10.1016/j.jmatprotec.2023.117944 158995971 Kern,_Drazumeric,_Pusavec-Analytical_study_on_critical_load_and_deformation_of_chip_in_high-pressure_jet_assisted_machining.pdf Kern,_Drazumeric,_Pusavec-Analytical_study_on_critical_load_and_deformation_of_chip_in_high-pressure_jet_assisted_machining.pdf 1 2F73626D5567F46C3BABC35E613DED80 225e56e848ed3b4d3a6277f3d80d23b240eacdda5c706b0a1543dfa497217ebb a99fae8a-2490-11ee-aeaf-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=171903 https://www.sciencedirect.com/science/article/pii/S0924013623000894 1 7664314f-2490-11ee-aeaf-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=171902 Fakulteta za strojništvo 0 0 0