MIT2_72s09_lec08

MIT2_72s09_lec08 - MIT OpenCourseWare http:/ocw.mit.edu...

Info iconThis preview shows pages 1–14. Sign up to view the full content.

View Full Document Right Arrow Icon
MIT OpenCourseWare http://ocw.mit.edu 2.72 Elements of Mechanical Design Spring 2009 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms .
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2.72 Elements of Mechanical Design Lecture 08: Flexures
Background image of page 2
Schedule and reading assignment Quiz ± Today: Bearing layouts (mid-class) ± Thursday: Hale 6.1 ± Soon: Bolted joint qualifying quiz Topics ± Flexure constraints and bearings… Degrees of Freedom Reading assignment ± Thursday: Layton Hale’s thesis – Read 2.6, 2.7, 6.1, skim rest of Chapter 6 Chapter 7 is cool to look at ± Tuesday: Read: 8.1, 8.3 – 8.5, 8.7, 8.9 – 8.11 Skim: 8.6, 8.8, 8.12 © Martin Culpepper, All rights reserved 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Examples drawn from your lathe © Martin Culpepper, All rights reserved 3
Background image of page 4
Mechanisms: Compliant vs. rigid Rigid mechanisms Images removed due to copyright restrictions. Please see ± Sliding joints http://www.physikinstrumente.com/en/primages/pi_m850_tip_i4c_o_eps.jpg http://www.hexapods.net/images/M850Ani160-1-slow.gif ± 100s of nm resolution ± Large range ± kg load capacity Compliant mechanisms ± Motion from member compliance ± Angstrom resolution θ y ± Limited range ± Limited load capacity z © Martin Culpepper, All rights reserved 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Micro-scale precision machines © Martin Culpepper, All rights reserved 5
Background image of page 6
Static SEM: Drs. Andras Vladar & Jason Gorman (NIST) FIB: Dr. Konrad Jarush (Hitachi) © Martin Culpepper, All rights reserved Courtesy of Andras Vladar, Jason Gorman, and Konrad Jarausch. Used with permission. 6
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
s y t e m Lighting Forceps Lens Meso-scale devices: Biomedical Two -photon endomicroscope S c a n i g Two -photon endomicroscope Lighting Forceps Lens m © Martin Culpepper, All rights reserved 7
Background image of page 8
Nano-scale devices Stator CNT “Rigid” link “Compliant” joint Rotor x y F © Martin Culpepper, All rights reserved 8
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Meso-scale precision machines © Martin Culpepper, All rights reserved 9
Background image of page 10
TMA y s te m Lighting Forceps Lens Nano-scale devices TMA Two -photon endomicroscope S c a n in g Two -photon endomicroscope m Lighting Forceps Lens Stator CNT “Rigid” link “Compliant” joint Rotor x y F © Martin Culpepper, All rights reserved 10
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Dip pen nanolithography on DNA arrays What is fundamentally different? ± Size Physics Fabrication ± Raw materials Images removed due to copyright restrictions. Please see ± Surfaces vs. points or lines http://mcf.tamu.edu/images/DPN_process.png http://www.nanoink.net/d/Nano%20-%20Part%201_Sm_Lo-Res_240x180.wmv http://images.iop.org/objects/nano/news/4/12/10/diagnal.jpg ~20 mm ~1 mm Courtesy PI 250 mm © Martin Culpepper, All rights reserved 11
Background image of page 12
© Martin Culpepper, All rights reserved 12
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 14
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 42

MIT2_72s09_lec08 - MIT OpenCourseWare http:/ocw.mit.edu...

This preview shows document pages 1 - 14. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online