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Kinematics and machinability using bidirectional composite vibratory finishing
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Journal Article
Kinematics and machinability using bidirectional composite vibratory finishing
2024
Overview
Considering the poor accessibility of the current finishing process for parts with complicated geometries, a novel bidirectional composite vibratory finishing (BCVF) approach was proposed, which combined the power actions on abrasive particles and processed workpieces. To examine the feasibility and effectiveness of the BCVF approach, comparative simulations based on discrete element method (DEM) and experimental validation were performed on a cylindrical workpiece simplified by a gear. Moreover, the effects of container size (or wall effects), media amount, workpiece position, and vibration parameters (including vibration amplitude and frequency) on the media-component interaction were systematically studied by DEM. The results show that the BCVF had the highest polishing efficiency, resulting in a workpiece surface roughness reduction rate up to 57% within 15 min. The distance between the container wall and the workpiece surface along the container width direction can be reduced to 4
d
(
d
is the abrasive particle diameter) with little effect on the finishing effect. Meanwhile, with the enhancing one-dimensional horizontal vibration, particle impact and shear effects are subsequently strengthened. In contrast, the media amount above the workpiece and the vibration along the workpiece axial direction are mainly effective for the shear effect. This BCVF approach provides reference for the finishing of various complex-shaped components including gears.
Publisher
Springer London,Springer Nature B.V
