Kinematic characteristics of mass finishing process with the parallel spindle: Velocity measurement and analysis of the media

Li, Xiuhong; Wu, Fengfeng; Li, Wenhui; Yang, Shengqiang; Chen, Yunan

doi:10.1177/1687814017729091

Cited by 9 publications

(4 citation statements)

References 28 publications

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“…A good modification of the kinematics of the finishing process, leading to the improvement of machining efficiency, is placing workpieces in holders, and their appropriate positioning in the abrasive stream [ 20 , 21 , 22 ]. Due to functions in the machining process, the stationary and active holders are distinguished.…”

Section: Introductionmentioning

confidence: 99%

“…Stationary holders allow placement of the workpieces in established positions. Active holders enable additional movement of the workpieces, which ensures an even treatment of all surfaces [ 21 , 22 , 23 ]. On the other hand, active holders allow extra moves for the workpieces, including an auxiliary rotary motion, which increases the efficiency of machining [ 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

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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%

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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“…With the aid of a particle image tracking technique to acquire the position of the part within the granular flow in the rolling regime, Boschetto and Veniali 17 studied the two-dimensional kinetics of the workpiece during the barrel finishing operation. Li et al 18 determined the displacement variation of the media and the impact velocity of the media on workpieces in the mass finishing process via a charge-coupled device laser displacement sensor. Na et al 19 utilized the Hertz–Mindlin model with an Archard wear contact model in DEM simulation for spindle barrel finishing to evaluate the motion trajectory of the roller-grinding media during the spindle-type barrel finishing process.…”

Section: Introductionmentioning

confidence: 99%

Investigation into the surface integrity of crankshaft by barrel finishing

Chang

Yang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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With the advancement of processing technology, the surface quality of crankshafts has become very demanding, especially in locations with severe friction and wear, such as the main shaft and connecting rod journals. Barrel finishing technology is widely applicable to the surface processes of large- and medium-sized parts as a typical free-grinding processing method with the characteristics of low processing cost, high processing efficiency, and simple processing equipment. In this study, a horizontal spindle barrel finishing machine is applied to the crankshaft parts. The surface integrity of the crankshaft is systematically evaluated before and after the finishing processing. The experimental results show that the surface integrity of the crankshaft is significantly improved after the finishing processing, which further improves the wear resistance of the part surface and increases the bearing capacity.

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“…It aims to improve the surface quality of parts and ameliorate the surface integrity of parts, which belongs to the category of precision and ultra-precision machining. The barrel finishing process is widely used due to the wide application scope [2][3][4], good processing effect [5,6], low processing cost and friendly processing environment [7,8]. Cariapa [9] points out that the barrel finishing process is used to improve the surface quality of almost 50% machined parts in the world.…”

Section: Introductionmentioning

confidence: 99%

Amending Research on the Expression of the Contact Force of the Spindle Barrel Finishing Based on EDEM Simulation

Wang

Yang

Zhao

et al. 2020

Chin. J. Mech. Eng.

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The spindle barrel finishing is commonly used to improve the surface integrity of the important parts of the high-end equipment while it is difficult to provide enough test artifacts for the traditional trial and error experiment to obtain the desirable processing technology. The EDEM simulation of the spindle barrel finishing can provide effective help for the process design, however, the difference between the simulation and experiment is closely related to the selection of the contact model during simulation. In this paper, simulations and experiments are conducted based on the identical apparatus and conditions to facilitate the comparison and validation between each other. Based on the Hertz contact theory, the effect of the material properties of contact objects and the relative position of the workpiece on the contact force is qualified. The expression of the correlation coefficient of the contact model is deduced. Then the formula for calculating the contact force between the barrel finishing abrasive and the workpiece that includes influence coefficient of the material properties and the relative positions is established. Finally, the contact force calculation formula is verified by changing the rotating speed. The result shows that the material correction coefficient ranges from 1.41 to 2.38, which is inversely related to the equivalent modulus E. The position correction coefficient ranges from 2.0 to 2.3. The relative error value between the calculation result and the experimental test result is from 0.58% to 14.07%. This research lay a theoretical foundation for the correction theory of the core elements of the spindle barrel finishing process.

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Kinematic characteristics of mass finishing process with the parallel spindle: Velocity measurement and analysis of the media

Cited by 9 publications

References 28 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

Investigation into the surface integrity of crankshaft by barrel finishing

Amending Research on the Expression of the Contact Force of the Spindle Barrel Finishing Based on EDEM Simulation

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