000149993 001__ 149993
000149993 005__ 20251017144547.0
000149993 0247_ $$2doi$$a10.1088/0957-0233/26/12/125902
000149993 0248_ $$2sideral$$a93267
000149993 037__ $$aART-2015-93267
000149993 041__ $$aeng
000149993 100__ $$0(orcid)0000-0002-3069-2736$$aTorralba, Marta
000149993 245__ $$aA three-fingered, touch-sensitive, metrological micro-robotic assembly tool
000149993 260__ $$c2015
000149993 5060_ $$aAccess copy available to the general public$$fUnrestricted
000149993 5203_ $$aThis article describes a metrological, robotic hand to manipulate and measure micrometer size objects. The presented work demonstrates not only assembly operations, but also positioning control and metrology capability. Sample motion is achieved by a commercial positioning stage, which provides XYZ-displacements for assembly of components. A designed and manufactured gripper tool that incorporates 21 degrees-of-freedom for independent alignment of actuators, sensors, and the three fingers of this hand is presented. These fingers can be opened and closed by piezoelectric actuators through levered flexures providing an 80 µm displacement range measured with calibrated opto-interrupter based, knife-edge sensors. The operational ends of the fingers comprise of a quartz tuning fork with a 7 µm diameter 3.2 mm long carbon fiber extending from the end of one tuning fork tine. Finger-tip force-sensing is achieved by the monitoring of individual finger resonances typically at around 32 kHz. Experimental results included are focused on probe performance analysis. Pick and place operation using the three fingers is demonstrated with all fingers being continuously oscillated, a capability not possible with the previous single or two finger tweezer type designs. By monitoring electrical feedback during pick and place operations, changes in the response of the three probes demonstrate the ability to identify both grab and release operations. Component metrology has been assessed by contacting different micro-spheres of diameters 50(±7.5) µm, 135(±20) µm, and 140(±20) µm. These were measured by the micro robot to have diameters of 67, 133, and 126 µm respectively with corresponding deviations of 4.2, 4.9, and 4.3 µm. This deviation in the measured results was primarily due to the manual, joystick-based, contacting of the fingers, difficulties associated with centering the components to the axis of the hand, and lower contact sensitivity for the smallest sphere. Finally, assemblies of spheres onto the edge of a razor blade plus assembly of spherical contact probes for micro-meter scale coordinate measurement applications are presented.
000149993 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000149993 590__ $$a1.492$$b2015
000149993 591__ $$aENGINEERING, MULTIDISCIPLINARY$$b26 / 85 = 0.306$$c2015$$dQ2$$eT1
000149993 591__ $$aINSTRUMENTS & INSTRUMENTATION$$b25 / 56 = 0.446$$c2015$$dQ2$$eT2
000149993 592__ $$a0.704$$b2015
000149993 593__ $$aEngineering (miscellaneous)$$c2015$$dQ1
000149993 593__ $$aInstrumentation$$c2015$$dQ1
000149993 593__ $$aApplied Mathematics$$c2015$$dQ2
000149993 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000149993 700__ $$aHastings, D.J.
000149993 700__ $$aThousand, J.D.
000149993 700__ $$aNowakowski, B.K.
000149993 700__ $$aSmith, S.T.
000149993 773__ $$g26, 12 (2015), 125902 [20 pp.]$$pMeas. sci. technol.$$tMEASUREMENT SCIENCE & TECHNOLOGY$$x0957-0233
000149993 8564_ $$s6028816$$uhttps://zaguan.unizar.es/record/149993/files/texto_completo.pdf$$yPostprint
000149993 8564_ $$s1982552$$uhttps://zaguan.unizar.es/record/149993/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000149993 909CO $$ooai:zaguan.unizar.es:149993$$particulos$$pdriver
000149993 951__ $$a2025-10-17-14:10:12
000149993 980__ $$aARTICLE