2003 and ibms nanodrive vettiger et al 2003 the

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Unformatted text preview: adius of the accumulative T-Map is t"a= a + t″Pb + db t″Pa/da. In these, the quantities tf and t″a represent accumulated positional and orientational variations (relative to the frame) for the edge of the 44mm diameter face of the collar that engages the blade. Expanding the stack up equations we get d t t d t f = t M + (t Cs + t w ) + b + b F + E + b 2 hEF hE d Q " t Q d " db (t G1 + t E 2 + t ecc1 + t ecc 2 + t K ) + t Pb + t Pa + b − 1t Pa + 2h d H 1− E 2 a (2) d " ta = b 2 tE db t F h + h +d EF E Q " Pb " db t Q + (t G1 + t E 2 + t ecc1 + t ecc 2 + t K ) 2h H 1− E 2 +t d + b d a " t Pa (3) 274 A. D. Jian et al. Figure 5. Three Tolerance-Maps and their sum, all of which are conformable to target face Pb on the collar. a) The T-Map for Pb relative to face Q on the spindle. b) The T-Map for target face Q relative to face D. c) The T-Map for target face D1 which accounts for the amplification of positional variations arising from the offset b between axis E-F and the center of D1. d) The accum...
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