4. A plane-strain machining operation is modeled as a 2-dimensional orthogonal cutting process. Two different cutting...
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4. A plane-strain machining operation is modeled as a 2-dimensional orthogonal cutting process. Two different cutting conditions are shown in Figure 1 and Figure 2 in terms of the undeformed and deformed chip thicknesses, the shear angle () and the tool rake angle (a). α₁ α₂ = 0 in tool workpiece tool workpiece FIGURE 1 Cutting process 1 FIGURE 2 Cutting process 2 (a) Assume the undeformed chip thickness t₁-t₂ for each process. Does one process remove move material than the other? Explain briefly your answer and any assumptions. Yes/No (circle one). Explain: (b) If the cutting velocity shown is the same for process 1 and 2, does one process remove material at a higher rate? Explain briefly your answer and any assumptions. Yes/No (circle one). Explain: (c) For both cutting conditions (Fig. 1 and 2) show how to derive the cutting ratio, undeformed chip thickness sin o r= deformed chip thickness cos (-a) (d) How can the chip ratio be used to determine the shear strain in metal cutting? 4. A plane-strain machining operation is modeled as a 2-dimensional orthogonal cutting process. Two different cutting conditions are shown in Figure 1 and Figure 2 in terms of the undeformed and deformed chip thicknesses, the shear angle () and the tool rake angle (a). α₁ α₂ = 0 in tool workpiece tool workpiece FIGURE 1 Cutting process 1 FIGURE 2 Cutting process 2 (a) Assume the undeformed chip thickness t₁-t₂ for each process. Does one process remove move material than the other? Explain briefly your answer and any assumptions. Yes/No (circle one). Explain: (b) If the cutting velocity shown is the same for process 1 and 2, does one process remove material at a higher rate? Explain briefly your answer and any assumptions. Yes/No (circle one). Explain: (c) For both cutting conditions (Fig. 1 and 2) show how to derive the cutting ratio, undeformed chip thickness sin o r= deformed chip thickness cos (-a) (d) How can the chip ratio be used to determine the shear strain in metal cutting?
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a YesNo circle one Explain To determine which process removes more material we can compare the volum... View the full answer
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Statistics Unlocking The Power Of Data
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1st Edition
Authors: Robin H. Lock, Patti Frazer Lock, Kari Lock Morgan, Eric F. Lock, Dennis F. Lock
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