This work has evolved beyond what is reported here a

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Unformatted text preview: he final hole’s geometry. A reduction in the size of the gap between the hub and the gear and an increase in the width of the hub can significantly decrease the angle of rotation of the 286 A. Bryan et al. drill structure, thereby improving the run-out and positional accuracy of the final hole. However, even if these kinematic adjustments are made, the error that would be caused by the gear forces would still be significant. 5. SUMMARY In this paper, the determination of the horizontal and vertical errors in the position of the tip of a nanodrill is presented. As a result of this study, it is determined that the horizontal error in the tip can be quite large, making it practically infeasible to obtain the holes with diameters on the nanoscale with the current drill architecture. Although, both the kinematic and static errors are large, the kinematic error is found to have a dominant effect on the final error of the horizontal position of the drill tip. Vertical errors in the drill tip are found to be negligible. However, changes...
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This note was uploaded on 08/03/2010 for the course DD 1234 taught by Professor Zczxc during the Spring '10 term at Magnolia Bible.

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