Rubber bearings for precision positioning systems
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2005.
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | eng |
| Published: |
Massachusetts Institute of Technology
2006
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/1721.1/33905 |
| _version_ | 1826196895320506368 |
|---|---|
| author | Barton Martinelli, Augusto E |
| author2 | David L. Trumper. |
| author_facet | David L. Trumper. Barton Martinelli, Augusto E |
| author_sort | Barton Martinelli, Augusto E |
| collection | MIT |
| description | Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2005. |
| first_indexed | 2024-09-23T10:39:39Z |
| format | Thesis |
| id | mit-1721.1/33905 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T10:39:39Z |
| publishDate | 2006 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/339052019-04-11T08:24:55Z Rubber bearings for precision positioning systems Barton Martinelli, Augusto E David L. Trumper. Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Mechanical Engineering. Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2005. Includes bibliographical references (leaves 251-252). In this thesis we investigate the use of thin rubber sheets or laminates of metal and rubber sheets as bearings in precision positioning systems. Such bearings have the potential to replace more conventional flexures fabricated for instance from metal. Rubber bearings also potentially have advantages in for example ease and low-cost of fabrication, overload robustness, and compact form. To study the properties of these we have designed a test fixture. This fixture allows us to measure the shear and compression characteristics of these bearings in their static sense, as a function of frequency, and of various design parameters. The test fixture has been used to test several types of rubber material. The tests performed include compression and shear tests of rubber laminates' static stiffness, dynamic stiffness, preload effects, step response, hysteresis, fatigue tests, and manufactureability. Different low-cost manufacturing methods of the rubber bearings have been suggested and preliminary tests have been done. The feasibility of these manufacturing methods has been confirmed, and the advantages and disadvantages of each identified. On the basis of the experimental results a rotary precision positioning system utilizing a rotary laminated rubber bearing, was designed, fabricated and tested. (cont.) The bearing of this device consists of multiple laminates of metal and rubber sheets packaged within a preload mechanism. This preload mechanism assures the bearing radial stiffness and compact form. It also assures a low cost alternative versus the use of conventional flexural bearings. Tests have shown that a steady-state angular travel of 2.5 mrad-pk can be accomplished and two types of controllers have been used to obtain a closed-loop bandwidth in the range of 1 kHz and 1.5 kHz. by Augusto E. Barton Martinelli. S.M. 2006-08-25T18:55:33Z 2006-08-25T18:55:33Z 2005 2005 Thesis http://hdl.handle.net/1721.1/33905 66530095 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 252 leaves 10229717 bytes 10241582 bytes application/pdf application/pdf application/pdf Massachusetts Institute of Technology |
| spellingShingle | Mechanical Engineering. Barton Martinelli, Augusto E Rubber bearings for precision positioning systems |
| title | Rubber bearings for precision positioning systems |
| title_full | Rubber bearings for precision positioning systems |
| title_fullStr | Rubber bearings for precision positioning systems |
| title_full_unstemmed | Rubber bearings for precision positioning systems |
| title_short | Rubber bearings for precision positioning systems |
| title_sort | rubber bearings for precision positioning systems |
| topic | Mechanical Engineering. |
| url | http://hdl.handle.net/1721.1/33905 |
| work_keys_str_mv | AT bartonmartinelliaugustoe rubberbearingsforprecisionpositioningsystems |