Figure - available from: The International Journal of Advanced Manufacturing Technology
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Path of a single grain under the EUVADGG and CGG (f = 35 kHz, R0 = 55 mm, rb = 30 mm, AL = 4 μm, AR = 1.5 μm, vs = 20 m/s, vw = 0.02 m/s). Grain path (a) in the og-xgygzg coordinate system; (b) in the x–y plane; (c) in the x–z plane
Source publication
Ultrasonic vibration-assisted dry grinding has been focused on to alleviate the cutting fluids' negative impact on environment, avoid the unnecessary waste, and reduce the manufacturing costs. However, this technology has not been used for grinding gear. In order to explore its effect, this study proposes a two-dimensional (i.e., 2D or elliptical)...
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Citations
... Ductile grinding of hard and brittle materials can effectively improve surface quality and reduce subsurface damage depth. As a result, considerable efforts have been expended to achieve ductile grinding of hard and brittle materials, improving machining efficiency by ensuring surface integrity of the crystalline composition [37][38][39][40]. Li et al. [41] conducted ultra-precision grinding experiments to explore surface and subsurface damage in single crystal materials across varying grinding wheel speeds, feed speeds, grinding depths, and abrasive particle sizes. ...
Any product must undergo precise manufacturing before use. The damage incurred during the manufacturing process can significantly impact the residual strength of the product post-manufacturing. However, the relationship between residual bending strength and manufacturing-induced damage remains unclear, despite being a crucial parameter for assessing material service life and performance, leading to a decrease in product performance reliability. This study focuses on investigating the impact of crack generation on residual bending strength through theoretical and experimental analyses of scratching, grinding, and three-point bending. The research first elucidates the forms and mechanisms of material damage through scratch experiments. Subsequently, using resin-bonded and electroplated wheels as case studies, the influence of different process parameters on grinding damage and residual bending strength is explored. The reduction of brittle removal can lead to a 50%–60% decrease in residual bending strength. Lastly, a model is developed to delineate the relationship between processing parameters and the residual bending strength of the product, with the model exhibiting an error margin of less than 11%. This model clearly reveals the effect of crack generation under different process parameters on residual flexural strength.
... On the basis of one-dimensional ultrasonic vibration, scholars have introduced two ultrasonic vibrations for assisted grinding. The surface quality of the workpiece is further improved, and the surface damage, such as roughness and cracks, is reduced [89][90][91]. As shown in Figure 10, two-dimensional ultrasonic vibration mainly involves coupled vibrations and includes three primary types: longitudinal-bending [92], double-bending [93], and longitudinal-torsional [94,95]. ...
... The maximum relative mean error between the theoretical and experimental results was 12.3%, while the overall relative mean error was 4.94%. Bie et al. [8] proposed a two-dimensional (i.e., 2D or elliptical) ultrasonic vibration-assisted dry grinding gear to explore the grinding performance. The grain kinematics and the characteristics of grinding force and surface roughness during elliptical ultrasonic vibration-assisted dry gear grinding were theoretically substantiated. ...
