Minimum surface roughness using rule-based modeling of the vibratory finishing process in a high-frequency bowl system

Wong, Ben Jin; Majumdar, Ketav; Ahluwalia, K. S.; Yeo, Song Huat

doi:10.1177/0954405420911282

Cited by 7 publications

(3 citation statements)

References 12 publications

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“…Unfortunately, this type of research is the least developed, as mass-finishing processes are generally poorly controllable and difficult to optimize. The aim of the research is to conduct a given treatment in such a way that its effects in the form of the surface texture are predictable [ 10 , 11 ], consistent with expectations, and repeatable [ 12 , 13 , 14 ]. In [ 10 ], the authors proposed a model combining vibration finishing process parameters and material removal mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Surface Treatment Process of AISI 304 Stainless Steel by Centrifugal Disc Finishing with the Use of an Active Workpiece Holder

et al. 2022

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This article presents the results of experimental studies of the centrifugal disc finishing (CDF) process of 304 steel elements with the use of an active workpieces holder, that allows workpieces for additional rotational and oscillation movements. The main aim of the research was to evaluate the mechanism of formation of the surface texture and to assess the intensity and effectiveness of the machining process. It is shown that additional movements of the workpiece significantly affect the formation of the machining traces generated by the elementary phenomena of micro-cutting, scratching, grooving, etc. As a result, these combined and complex interactions lead to the formation of the surface topography of the workpieces. Based on the research results, it can be concluded that the use of an active workpiece holder in the CDF process allows changes in the intensity of the machining process. Moreover, the active holder allows modification of the surface smoothing process. The intensity of the treatment process depends primarily on the location of the workpiece holder in the appropriate energy area of the work charge. On the other hand, the efficiency of the workpiece surface smoothing depends on the parameters of the oscillation and rotational movements of the workpiece mounted in the active holder. The presented research results show that the use of an active holder, enabling rotation and oscillation of the workpiece, may lead to a more effective use of smoothing processes in CDF machines. The analysis of the results shows that the values of the Sdr and Sa parameters are more strongly dependent on the vibration frequency and increase with its increasing frequency. This is undoubtedly the result of the concentration of smoothing marks on the smoothed surface. However, with regard to the rotational speed of the object, this relationship is non-monotonic, and its greatest influence occurs at its intermediate values. It follows that this activity does not have a significant impact on the generation of the number of smoothing marks and the degree of their concentration. The research methodology proposed in the work allows the initial determination of the dependence of the results of the CDF process on the machining parameters, including the parameters of the active holder. This methodology can also be used for machining materials other than AISI 304 steel.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Surface Treatment Process of AISI 304 Stainless Steel by Centrifugal Disc Finishing with the Use of an Active Workpiece Holder

et al. 2022

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“…In addition, the discrete element (DME) method has been employed in studies [13][14][15][16] for the mass finishing process. Hashemnia et al [17] studied the fluidized granular media at top, middle and bottom of the finisher using DEM simulation method. The effect of parameters such as the grain size of the abrasive media, the operating frequency of the barrel, the loading volume, and the lubrication condition on the surface finishing has been studied for finding the optimal conditions of vibratory finishing [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Study on the Motion Characteristics of Abrasive Media in Vibratory Finishing

Liu

Wang

Jiang

et al. 2022

J. Phys.: Conf. Ser.

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In order to investigate the motion characteristics of the abrasive media in the vibratory finishing, the RecurDyn and EDEM coupled simulation method is employed. The simulation results show that the trajectories of the abrasive media are annular spiral motions in general, including a circular motion about the central axis of the vibratory finishing machine and an elliptical motion around the center of the media flow. The reliability of the RecurDyn-EDEM coupled simulation for the vibratory surface finishing process is validated by X-ray real-time detection, which has significance in better understanding of the motion characteristics of abrasive media and the optimal design of the vibratory surface finishing processes.

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“…They computed the effect of the process parameters and the relation of particle and container wall speeds with the exerted forces to the workpiece. Wong et al 37 estimated a mathematical model by using experimental data to predict the processing time in vibratory polishing. They stated that by this model, estimation of the processing time to achieve desirable surface roughness is possible.…”

Section: Introductionmentioning

confidence: 99%

Surface roughness study of polyamide in nano-metric polishing using low-frequency acoustic energy

Beigmoradi

Vahdati

2021

Proceedings of the Institution of Mechanical Engineers, Part B:

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Polymers have gained the attention of manufacturers due to their significant advantages such as low density, high corrosion resistance, and high humidity resistance. Producing high-precision polymeric components is one the most challenging issues especially in fabricating complex or micro-scale systems. Some of the machining techniques such as electro discharge machining (EDM) and electrochemical machining (ECM) cannot be employed for machining the non-conductive parts. Using abrasive particles is one of the best options for machining these types of materials. In this work, the capability of the acoustic energy for machining polyamide (PA) workpieces is studied. To this end, an experimental setup is installed and design of experiment (DoE) algorithm is employed to survey the effect of process parameters on surface roughness. Three parameters at three levels are considered as the effective factors of the process and the sensitivity of the surface roughness on the process factors is investigated. In the next step, a hybrid finite element/boundary element approach was used to discuss the relation of process parameters to the vibrational characteristics of the container, then the mechanism of the process was investigated employing the discrete element method. Finally, the surface topology of the optimal workpiece before and after the process was presented and compared. It was observed that acoustic energy can be considered as a vibration source of the container’s floor to provide kinetic energy for machining PA parts on the nano-metric scale. Moreover, it was found that the initial roughness of the workpiece and the chosen parameters play a crucial role in the machining process. Experimental results show that in this technique by selecting appropriate process factors the surface roughness can be reduced up to 50%.

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Minimum surface roughness using rule-based modeling of the vibratory finishing process in a high-frequency bowl system

Cited by 7 publications

References 12 publications

Investigation of the Surface Treatment Process of AISI 304 Stainless Steel by Centrifugal Disc Finishing with the Use of an Active Workpiece Holder

Investigation of the Surface Treatment Process of AISI 304 Stainless Steel by Centrifugal Disc Finishing with the Use of an Active Workpiece Holder

Study on the Motion Characteristics of Abrasive Media in Vibratory Finishing

Surface roughness study of polyamide in nano-metric polishing using low-frequency acoustic energy

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