Design and 3D printed implementation of a microgripper actuated by a piezoelectric stack

Ferrara-Bello, C. A.; Sandoval-Reyes, J. O.; Vargas-Chable, Pedro; Tecpoyotl-Torres, M.; Varona, Jorge

doi:10.1109/icmeae.2019.00019

Cited by 2 publications

(6 citation statements)

References 14 publications

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“…The structural support of the piezoelectric driver or actuator was manufactured using PLA-based additive manufacturing, which contributes to obtaining a low-cost prototype. In the previous design [45], the piezoelectric driver was composed of 4 buzzers electrically connected in parallel; in this case, the number of buzzers, with diameters of 27 mm, has been increased to 6, with larger diameters (35 mm). This fact allows us to increase the displacement by approximately 121%.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, Amp depends on the dimensions of the linkages of the leverage and parallelogram mechanisms. Substituting the values shown in Table 3, in Equation ( 6), the MG design has an individual Amp of 6.26 in each of the symmetrical parts of the MG; therefore, Amp has a value of 12.52, which is larger than the corresponding value (6.5) of the MG shown in [45].…”

Section: Analytical Model 41 Kinematic Modelingmentioning

confidence: 99%

“…A microgripper with a similar geometry of the output and middle stages was also considered [56]. No additive manufactured and piezoelectric actuated miniature grippers have been found, only the previous design shown in [45]. Other grippers and microgrippers are made with soft materials, resins, etc., under different manufacturing processes such as stereolithographic and additive manufacturing, with thermal and magnetic actuation schemes, among others.…”

Section: Comparison With Other Microgrippersmentioning

confidence: 99%

“…• MG's jaws. Modifications of the previous model [45] were made to improve its performance. The shape of the handmade tips was modified and machined with a CNC.…”

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confidence: 99%

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Additive Manufactured Piezoelectric-Driven Miniature Gripper

2023

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In several cases, it is desirable to have prototypes of low-cost fabrication and adequate performance. In academic laboratories and industries, miniature and microgrippers can be very useful for observations and the analysis of small objects. Piezoelectrically actuated microgrippers, commonly fabricated with aluminum, and with micrometer stroke or displacement, have been considered as Microelectromechanical Systems (MEMS). Recently, additive manufacture using several polymers has also been used for the fabrication of miniature grippers. This work focuses on the design of a piezoelectric-driven miniature gripper, additive manufactured with Acrylonitrile Butadiene Styrene (PLA), which was modeled using a pseudo rigid body model (PRBM). It was also numerically and experimentally characterized with an acceptable level of approximation. The piezoelectric stack is composed of widely available buzzers. The aperture between the jaws allows it to hold objects with diameters lower than 500 mm, and weights lower than 1.4 g, such as the strands of some plants, salt grains, metal wires, etc. The novelty of this work is given by the miniature gripper’s simple design, as well as the low-cost of the materials and the fabrication process used. In addition, the initial aperture of the jaws can be adjusted, by adhering the metal tips in the required position.

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Section: Methodsmentioning

confidence: 99%

Section: Analytical Model 41 Kinematic Modelingmentioning

confidence: 99%

Section: Comparison With Other Microgrippersmentioning

confidence: 99%

“…• MG's jaws. Modifications of the previous model [45] were made to improve its performance. The shape of the handmade tips was modified and machined with a CNC.…”

mentioning

confidence: 99%

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Additive Manufactured Piezoelectric-Driven Miniature Gripper

2023

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“…The successful integration of piezoelectric actuators and sensors to suppress hand tremors has been reported [58]. 3D-printed piezoelectric actuators have shown promising results and can be utilized in micro applications [131][132][133]. Dielectric elastomer actuators (DEA) have also shown great capability to suppress PD hand tremors [63].…”

Section: Electro-responsive Actuatorsmentioning

confidence: 99%

4D printing of soft orthoses for tremor suppression

et al. 2022

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Tremor is an involuntary and oscillatory movement disorder that makes daily activities difficult for affected patients. Hand tremor-suppression orthoses are noninvasive, wearable devices designed to mitigate tremors. Various studies have shown that these devices are effective, economical, and safe; however, they have drawbacks such as large weight, awkward shape, and rigid parts. This study investigates different types of tremor-suppression orthoses and discusses their efficiency, mechanism, benefits, and disadvantages. First, various orthoses (with passive, semi-active, and active mechanisms) are described in detail. Next, we look at how additive manufacturing (AM) has progressed recently in making sensors and actuators for application in tremor orthoses. Then, the materials used in AM are further analyzed. It is found that traditional manufacturing problems can be solved with the help of AM techniques, like making orthoses that are affordable, lighter, and more customizable. Another concept being discussed is using smart materials and AM methods, such as four-dimensional (4D) printing, to make orthoses that are more comfortable and efficient. Graphic abstract

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Design and 3D printed implementation of a microgripper actuated by a piezoelectric stack

Cited by 2 publications

References 14 publications

Additive Manufactured Piezoelectric-Driven Miniature Gripper

Additive Manufactured Piezoelectric-Driven Miniature Gripper

4D printing of soft orthoses for tremor suppression

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