February 25 th 2008

Overall views and concepts

◦ Adam Stagnaro (Machining) ◦ Stephen Steger (FEA) ◦ Karina Pikhart (Solidworks) ◦ Sarah Cooper-Davis (MathCAD ) ◦ Tess Veuthey

 n= σ yield / σ max  Chosen Safety Factor:  n=3   Worst Case Scenario  Tool Hits Chuck

Production and Calculations

F cutting RARA RBRB R A = -0.5 F cutting R B = 1.5 F cutting F cutting -0.5 F cutting -1.5 F cutting

 Determined that bending stress is greatest at D (σ d = 10.5 kpsi)  For 12L14 steel: ◦ S y = 60 kpsi ◦ S e = 31.1 kpsi (calculated)  With given load, the part has infinite life (σ d < S e ) and does not yield (σ d < S y )  Safety Factor 2.96 for endurance limit  Safety Factor 5.7 for yield

 Using σ m = σ a = 10.5 kpsi, plotted data on Goodman diagram.  Well within acceptable range  Calculated cycles to failure: N = 1.81*10 10 cycles

 Manufacturing  Thermal  Material  Bearing  Deflection  Vibrations

Shaft fabrication

Fabrication Video

Finished Product