Details
| Original language | English |
|---|---|
| Pages (from-to) | 79-82 |
| Number of pages | 4 |
| Journal | Materials Science Forum |
| Volume | 394-395 |
| Publication status | Published - 2 Dec 2002 |
| Externally published | Yes |
| Event | International Conference on Shape Memory and Superelastic Technologies and Shape Memory Materials (SMST-SMM 2001) - Kumning, China Duration: 2 Sept 2001 → 6 Sept 2001 |
Abstract
Two parallel structures with 2 and 3 DOF in which the conventional bearings are replaced with flexure hinges made of single crystals CuAlNiFe are presented. Measurements have been made to determine the repeatability of the parallel robot with 3 DOF. The accuracy is in the range of 0.5-1.3 μm. Investigations have also been made on the kinematic behavior of flexure hinges since they do not behave exactly like conventional rotational joints. The movement of the instantaneous center of rotation of the flexure hinge is reflected in the behavior of the compliant parallel mechanism, which shows deviations to its rigid body model. These deviations are also simulated by means of FEM. Because the hinges are loaded cyclical investigations are made to characterize the fatigue failure behavior of this material in combination with the geometry of the hinges. As a result of the anisotropic properties of the single crystal tests have been made to determine dependencies between the orientation of the hinge relative to the lattice.
Keywords
- Compliant Mechanism, CuAlNiFe, Flexure Hinges, High-Precision Robotics, Parallel Structure, Pseudoelastic Single Crystal
ASJC Scopus subject areas
- Materials Science(all)
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Materials Science Forum, Vol. 394-395, 02.12.2002, p. 79-82.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Pseudoelastic flexure hinges in devices for high-precision tasks and investigations of their fatigue
AU - Hesselbach, Jürgen
AU - Raatz, Annika
PY - 2002/12/2
Y1 - 2002/12/2
N2 - Two parallel structures with 2 and 3 DOF in which the conventional bearings are replaced with flexure hinges made of single crystals CuAlNiFe are presented. Measurements have been made to determine the repeatability of the parallel robot with 3 DOF. The accuracy is in the range of 0.5-1.3 μm. Investigations have also been made on the kinematic behavior of flexure hinges since they do not behave exactly like conventional rotational joints. The movement of the instantaneous center of rotation of the flexure hinge is reflected in the behavior of the compliant parallel mechanism, which shows deviations to its rigid body model. These deviations are also simulated by means of FEM. Because the hinges are loaded cyclical investigations are made to characterize the fatigue failure behavior of this material in combination with the geometry of the hinges. As a result of the anisotropic properties of the single crystal tests have been made to determine dependencies between the orientation of the hinge relative to the lattice.
AB - Two parallel structures with 2 and 3 DOF in which the conventional bearings are replaced with flexure hinges made of single crystals CuAlNiFe are presented. Measurements have been made to determine the repeatability of the parallel robot with 3 DOF. The accuracy is in the range of 0.5-1.3 μm. Investigations have also been made on the kinematic behavior of flexure hinges since they do not behave exactly like conventional rotational joints. The movement of the instantaneous center of rotation of the flexure hinge is reflected in the behavior of the compliant parallel mechanism, which shows deviations to its rigid body model. These deviations are also simulated by means of FEM. Because the hinges are loaded cyclical investigations are made to characterize the fatigue failure behavior of this material in combination with the geometry of the hinges. As a result of the anisotropic properties of the single crystal tests have been made to determine dependencies between the orientation of the hinge relative to the lattice.
KW - Compliant Mechanism
KW - CuAlNiFe
KW - Flexure Hinges
KW - High-Precision Robotics
KW - Parallel Structure
KW - Pseudoelastic Single Crystal
UR - http://www.scopus.com/inward/record.url?scp=0036432006&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:0036432006
VL - 394-395
SP - 79
EP - 82
JO - Materials Science Forum
JF - Materials Science Forum
SN - 0255-5476
T2 - International Conference on Shape Memory and Superelastic Technologies and Shape Memory Materials (SMST-SMM 2001)
Y2 - 2 September 2001 through 6 September 2001
ER -