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Autor: Pedro Vargas Chable
XYZ Micropositioning System Based on Compliance Mechanisms Fabricated by Additive Manufacturing
CARLOS ANDRES FERRARA BELLO Pedro Vargas Chable José Gerardo Vera Dimas Margarita Tecpoyotl Torres (2021)
This article presents the design and implementation of a micropositioning system actuated
by three piezoelectric stacks to control its displacements on XYZ axes. The use of conventional
piezoelectric buzzers allows us to reduce fabrication costs. The working or mobile platform is the base
for objects that will be manipulated, for example, in automated assembling. The micropositioner can
be integrated into a microgripper to generate a complete manipulation system. For micropositioner
fabrication, at first, Polylactic Acid (PLA) was chosen as the structural material, but after simulation
and some experimental tests performed with a micropositioner made of Acrylonitrile Butadiene
Styrene (ABS), it showed larger displacement (approx. 20%) due to its lower stiffness. A third test
was performed with a positioner made with Polyethylene Terephthalate Glycol (PETG), obtaining an
intermediate performance. The originality of this work resides in the geometrical arrangement based
on thermoplastic polymer compliance mechanisms, as well as in the use of additive manufacturing
to fabricate it. An experimental setup was developed to carry out experimental tests. ANSYS™ was
used for simulation.
Artículo
INGENIERÍA Y TECNOLOGÍA CIENCIAS TECNOLÓGICAS PETG, MEMS, micromanipulation, piezoelectric actuation, hysteresis effect linearization