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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Awtar, Shorya Ustick, John Sen, Shiladitya |
| Copyright Year | 2011 |
| Abstract | We present the constraint-based design of a novel parallel kinematic flexure mechanism that provides highly decoupled motions along the three translational directions (X, Y, and Z) and high stiffness along the three rotational directions (θx, θy, and θz). The geometric decoupling ensures large motion range along each translational direction and enables integration with large-stroke ground-mounted linear actuators or generators, depending on the application. The proposed design, which is based on a systematic arrangement of multiple rigid stages and parallelogram flexure modules, is analyzed via non-linear finite element analysis. A proof-of-concept prototype of the flexure mechanism is fabricated to validate its large range and decoupled motion capability. The analyses as well as the hardware demonstrate an XYZ motion range of 10 mm × 10 mm × 10 mm. Over this motion range, the non-linear FEA predicts a cross-axis error of less than 3%, parasitic rotations less than 2 mrad, less than 4% lost motion, actuator isolation less than 1.5%, and no perceptible motion direction stiffness variation. Ongoing work includes non-linear closed-form analysis and experimental measurement of these error motion and stiffness characteristics. |
| Sponsorship | Design Engineering Division and Computers and Information in Engineering Division |
| Starting Page | 119 |
| Ending Page | 126 |
| Page Count | 8 |
| File Format | |
| ISBN | 9780791854839 |
| DOI | 10.1115/DETC2011-47713 |
| Volume Number | Volume 6: 35th Mechanisms and Robotics Conference, Parts A and B |
| Conference Proceedings | ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference |
| Language | English |
| Publisher Date | 2011-08-28 |
| Publisher Place | Washington, DC, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Design Actuators Errors Degrees of freedom Bending (stress) Flexure mechanisms Kinematics Stiffness Generators Hardware Finite element analysis Engineering prototypes |
| Content Type | Text |
| Resource Type | Article |
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