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TY - CONF AU - Olea, G. AU - Huber, N. ED - Casas, Joan ED - Schaa, Volker RW ED - Costa, Isidre ED - López, David ED - Prieto, Montserrat TI - OCTOGLIDE - Table Positioning Device for Diffraction Applications J2 - Proc. of MEDSI2016, Barcelona, Spain, 11-16 September 2016 CY - Barcelona, Spain T2 - Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation Conference T3 - 9 LA - english AB - A new Table Positioning Device(TPD) for high precision and heavy load manipulations has been developed. Conceived as an alternative to the precision hexapods it fulfils the gap of sample (and/or, instruments) positioning in small (height) available working spaces of synchrotron Diffractometers (Dm). The concept is based on a Redundant Parallel Kinematic Structure (Rd-PKS) with four (4) legs having 2 dof active joints (actuators). In this Proof of Functionality (PoF) step, a stacked solution has been adopted for actuators design using the existent XY translation Positioning Units (Pu). The symmetrically modular 6-4(PP)PS precision mechanism - OCTOGLIDE(OG) having eight (8) gliding actuators (P) is implying also a pair of wedges - Elevation (El) and socket/ball - Guiding (G) Pu, as passive joints (P and S) forming one of the Positioning modules (Pm). Spatial positions can be reached without any singularities and planar motions along/around X or Y axis are performed very intuitively with some of the actuators (decoupled) motion. The first tests of the prototype are revealing both, high accuracy (straightness, flatness, etc) and stiffness capabilities. PB - JACoW Publishing CP - Geneva, Switzerland SP - 38 EP - 40 KW - ion KW - controls KW - software KW - GUI KW - synchrotron DA - 2017/06 PY - 2017 SN - 978-3-95450-188-5 DO - doi:10.18429/JACoW-MEDSI2016-MOPE17 UR - http://jacow.org/medsi2016/papers/mope17.pdf ER -