05 Advanced Machining questions

Page 1

DOMANDE ADVANCED MACHINING 2023-01-20 What is peculiar of the thrust force in micromilling? o It experiences a localized maximum before resetting to a lower value and increasing monotonically o It indefinitely increases monotonically along the tool path o It indefinitely decreases monotonically along the tool path What is the problem of not inclining a ball-end mill? o By not inclining the mill we have a small Dcap o By not inclining the mill we have excessive tool wear due to non-optimal working conditions o By not inclining the mill forces are non-homogenously distributed on the mill o By not inclining the mill tool deflection will be increased 2023-07-20 In milling, which error is it more important to reduce? Chordal error or interpolation error? o Interpolation error because it is more important to increase feed rate o Chordal error because it is more important when trying to increase the maximum feed rate o Chordal error because it allows for a lower sampling rate o Interpolation error because it allows for a lower sampling rate Which of the following statements is true in micromilling? o The BUE is stable and leads to negative rake angles o The BUE is instable and leads to positive rake angles o The BUE is stable and leads to positive rake angles o The BUE is instable and leads to negative rake angles 2023-02-10 Is advantageous of having a stable BUE in micromilling? o Yes, since it decreases the negative rake angle compared to the nominal one o No, since it decreases the negative rake angle compared to the nominal one o Yes, because it decreases the strain hardening effect o No, because the BUE is not stable in micromilling What would be the reason of detecting a lot higher chip volume than the nominal value? o Very high revolutions of the tool (over 12’000 RPM)…