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Parallel electrostatic grippers for layered assembly
DOI:10.1016/j.addma.2019.03.032.png)
摘要
En 中文
Layered Assembly is a voxel-based additive manufacturing method in which premanufactured voxels serve as the feedstock for producing multi-material parts. The parallel placement of voxels necessary for Layered Assembly is carried out by electroadhesion-a type of astrictive prehension, which is an elegant, scalable, low-power, solid-state, and epoxy-free grasping method with numerous applications. In the present work, 2 x 2 arrays of electroadhesive grippers were designed in both comb- and spiral-shaped electrode geometries. Electrodes were nominally designed for grasping voxels of 3 x 3 mm cross-section. Electrostatic field simulations were performed in COMSOL Multiphysics for both single electrodes, and 2 x 2 electrode arrays. The selective gripping capability of the electrode arrays was tested at voltages in the 75-800 V range and applied to both polymer and metallic voxels. A comparison of electrode performance in terms of geometry revealed that comb-shaped electrodes were superior, due to approximate to 100% reliability when operating in the 600-800 V range.
Keyword:
Additive manufacturing
Electrostatic gripper
Electroadhesion
Layered assembly
Voxel printing
Multi-material
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IF:
11.1
论文数:
4.7K
被引数:
4.9W
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