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Sensor Prototype to Evaluate the Contact Force in Measuring with Coordinate Measuring Arms.

Cuesta E, Telenti A, Patiño H, González-Madruga D, Martínez-Pellitero S - Sensors (Basel) (2015)

Bottom Line: The paper also describes the monitoring software that reads the signals in real time, the calibration procedure of the prototype and the validation tests oriented towards increasing knowledge of the forces employed in manual probing.Several experiments read and record the force in real time comparing different ways of probing (discontinuous and continuous contact) and measuring different types of geometric features, from single planes to exterior cylinders, cones, or spheres, through interior features.The final goal of this research is to improve the probing technique, for example by using an operator training programme, allowing extra-force peaks and bad contacts to be minimized or just to avoid bad measurements.

View Article: PubMed Central - PubMed

Affiliation: Department of Manufacturing Engineering, University of Oviedo, Campus de Gijón, Asturias 33203, Spain. ecuesta@uniovi.es.

ABSTRACT
This paper describes the design, development and evaluation tests of an integrated force sensor prototype for portable Coordinate Measuring Arms (CMAs or AACMMs). The development is based on the use of strain gauges located on the surface of the CMAs' hard probe. The strain gauges as well as their cables and connectors have been protected with a custom case, made by Additive Manufacturing techniques (Polyjet 3D). The same method has been selected to manufacture an ergonomic handle that includes trigger mechanics and the electronic components required for synchronizing the trigger signal when probing occurs. The paper also describes the monitoring software that reads the signals in real time, the calibration procedure of the prototype and the validation tests oriented towards increasing knowledge of the forces employed in manual probing. Several experiments read and record the force in real time comparing different ways of probing (discontinuous and continuous contact) and measuring different types of geometric features, from single planes to exterior cylinders, cones, or spheres, through interior features. The probing force is separated into two components allowing the influence of these strategies in probe deformation to be known. The final goal of this research is to improve the probing technique, for example by using an operator training programme, allowing extra-force peaks and bad contacts to be minimized or just to avoid bad measurements.

No MeSH data available.


Related in: MedlinePlus

Duration time for triggering signal.
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sensors-15-13242-f011: Duration time for triggering signal.

Mentions: The synchronization of this sensor also allows the duration of the triggering time to be studied. The main objective of this survey is to study the homogeneity of the duration among operators. These data correspond to the horizontal part of the triggering signal. These values were collected and an average duration of 0.182 s was found, Figure 11. This was constant for all operators.


Sensor Prototype to Evaluate the Contact Force in Measuring with Coordinate Measuring Arms.

Cuesta E, Telenti A, Patiño H, González-Madruga D, Martínez-Pellitero S - Sensors (Basel) (2015)

Duration time for triggering signal.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4507632&req=5

sensors-15-13242-f011: Duration time for triggering signal.
Mentions: The synchronization of this sensor also allows the duration of the triggering time to be studied. The main objective of this survey is to study the homogeneity of the duration among operators. These data correspond to the horizontal part of the triggering signal. These values were collected and an average duration of 0.182 s was found, Figure 11. This was constant for all operators.

Bottom Line: The paper also describes the monitoring software that reads the signals in real time, the calibration procedure of the prototype and the validation tests oriented towards increasing knowledge of the forces employed in manual probing.Several experiments read and record the force in real time comparing different ways of probing (discontinuous and continuous contact) and measuring different types of geometric features, from single planes to exterior cylinders, cones, or spheres, through interior features.The final goal of this research is to improve the probing technique, for example by using an operator training programme, allowing extra-force peaks and bad contacts to be minimized or just to avoid bad measurements.

View Article: PubMed Central - PubMed

Affiliation: Department of Manufacturing Engineering, University of Oviedo, Campus de Gijón, Asturias 33203, Spain. ecuesta@uniovi.es.

ABSTRACT
This paper describes the design, development and evaluation tests of an integrated force sensor prototype for portable Coordinate Measuring Arms (CMAs or AACMMs). The development is based on the use of strain gauges located on the surface of the CMAs' hard probe. The strain gauges as well as their cables and connectors have been protected with a custom case, made by Additive Manufacturing techniques (Polyjet 3D). The same method has been selected to manufacture an ergonomic handle that includes trigger mechanics and the electronic components required for synchronizing the trigger signal when probing occurs. The paper also describes the monitoring software that reads the signals in real time, the calibration procedure of the prototype and the validation tests oriented towards increasing knowledge of the forces employed in manual probing. Several experiments read and record the force in real time comparing different ways of probing (discontinuous and continuous contact) and measuring different types of geometric features, from single planes to exterior cylinders, cones, or spheres, through interior features. The probing force is separated into two components allowing the influence of these strategies in probe deformation to be known. The final goal of this research is to improve the probing technique, for example by using an operator training programme, allowing extra-force peaks and bad contacts to be minimized or just to avoid bad measurements.

No MeSH data available.


Related in: MedlinePlus