Abstract
In high precision applications flexures are used to accurately guide motion. Here it is essential to obtain sufficient off-axis support stiffness as to mitigate parasitic dynamics. When deflecting, stress concentrations limit the flexure thickness and hence the support stiffness and loadability of the structure. In this paper we present an approach to make the curvature and stress constant over the flexure such that its thickness and consequently its support-stiffness may be increased. We show this approach with a DiamondFlex element. This DiamondFlex structure supports the endpoint forces such that the guiding flexure only experiences a bending moment, which results in a constant curvature and stress over the length of the flexure. Application of this approach to a parallel flexure guidance enables a thickness increase of 45 %, increasing the support stiffness by a factor 2.5.
Original language | English |
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Pages | 47-50 |
Number of pages | 4 |
Publication status | Published - 30 May 2022 |
Event | 22nd International Conference & Exhibition, EUSPEN 2022 - CERN, Geneva, Switzerland Duration: 30 May 2022 → 3 Jun 2022 Conference number: 22 https://www.euspen.eu/our-events/geneva-2022-programme/ |
Conference
Conference | 22nd International Conference & Exhibition, EUSPEN 2022 |
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Abbreviated title | EUSPEN |
Country/Territory | Switzerland |
City | Geneva |
Period | 30/05/22 → 3/06/22 |
Internet address |
Keywords
- Flexure mechanisms
- Constant curvature
- Optimization,
- Precision engineering