Elbow precision machining technology by abrasive flow based on direct Monte Carlo method

Liu, Guosong; Zhu, Zheng; Wang, Bin-yu; Zhang, Xinming; Wang, Fei; Zhao, Weihong; Xu, Chengyu

doi:10.1007/s11771-020-4562-0

Cited by 5 publications

(3 citation statements)

References 47 publications

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“…The technology adopts macro-drive and micro-drive dual-drives, in which the macro-drive provides large-stroke motion for the system, and the micro-drive compensates for the motion error of the macro-drive, realizing large-stroke and high-precision mechanical motion. Since the concept was put forward, it has become one of the hot spots in the field of precision machinery, and it is currently widely used in high-tech fields, such as the aerospace, biomedicine and military industries [ 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Research on Continuous Error Compensation of a Sub-Arc-Second Macro/Micro Dual-Drive Rotary System

Zhang

Huang

et al. 2022

Micromachines

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In this paper, a sub-arc-second macro/micro dual-drive rotary system is designed, and the continuous compensation of the system error and its experimental research are completed. First, the macro-drive system is driven by a direct-drive motor, and the micro-drive system uses a piezoelectric ceramic to drive the micro-drive rotary mechanism; the system uses a micro-drive system to compensate the motion error of the macro-drive system, and uses circular grating to feedback the displacement of the macro/micro total output turntable to form a macro/micro dual-drive closed-loop control system. Second, based on the establishment of the system error model, the design of the system’s continuous error compensation scheme is completed. Finally, the positioning accuracy testing of the system, direct error compensation of the macro-drive, manual error compensation of the macro-drive, error compensation performance of the micro-drive part and macro/micro compensation of the system are carried out in the study. The results show that the repeated positioning error and the positioning error of the system are reduced by 78.8% and 95.2%, respectively, after macro/micro compensation. The correctness and effectiveness of the designed system design, error compensation and control method are verified through performance tests, and its positioning accuracy is verified to the sub-arc-second (0.1 arcsecond) level. The research in this paper has important reference value for the development of ultra-precision macro/micro dual-drive technology.

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Section: Introductionmentioning

confidence: 99%

Research on Continuous Error Compensation of a Sub-Arc-Second Macro/Micro Dual-Drive Rotary System

Zhang

Huang

et al. 2022

Micromachines

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“…The AFF of laser-textured hobbed spur gears (LTHSG) reduced the surface roughness and microgeometric errors (including deviations of the total profile, total lead, total pitch, and radial runout), reduced its operating noise and vibration, and improved operating performance and service life. Li et al [12] carried out research on the technical problems of inner surface finishing of elbow parts and the mechanism of particles in AFPM of elbow parts, obtained the influence order of different parameters on the quality of AFPM, and established the optimal process parameters. Palwinder [13] used magnetic AFM to finish the micro-holes of aluminum cylindrical pipe workpiece samples and optimized the process variables by using the response surface method.…”

Section: Introductionmentioning

confidence: 99%

Quality control method of inner surface of valve sleeve in abrasive flow machining

Li¹,

Sun²,

Zhu³

et al. 2021

Preprint

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The abrasive flow precision machining(AFPM) method is utilized to smooth the inner wall of the valve sleeve. Through the method of large eddy simulation(LES) and a reasonable subgrid model, numerical simulation analysis is performed on the inner surface of the abrasive flow machining (AFM) valve sleeve to predict the material removal efficiency and surface quality. The effects of wall shear force, dynamic pressure, particle pressure, and vortex on the particle flow are analyzed under different processing parameters. The mechanism of precision machining of the inner wall surface of the valve sleeve by abrasive flow is obtained. The experiment of AFPM was performed by response surface methodology. The results show: The processing pressure and the number of abrasive mesh have a significant impact on the AFM. Through the quadratic response surface plot and contour plot, it is found that the roughness has a minimum point and the best process parameters are obtained. After AFPM, the roughness of the inner wall of the valve sleeve can reach 0.218μm. Finally, the roughness prediction model is established by using the analysis of variance method, and the quality control method of the inner wall surface of the valve sleeve is obtained.

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“…The results show that the simulation and experiment provide very close results in terms of material removal, and the relatively small differences observed can be reduced by improving the calibration scheme and adjusting the boundary conditions of the model. Li et al [16][17][18] studied the collision between abrasive particles in abrasive flow machining process and the influence of common machining parameters on machining effect, and verified and analyzed it by using large eddy simulation method to verify the effectiveness of abrasive flow machining and the efficiency of numerical analysis. Ramírez-Cruz et al [19] used the large eddy simulation method to study the free surface flow in a turbine-driven unbaffled stirred tank, and used a compact difference scheme and level set method to solve the flow equation and track the free surface.…”

mentioning

confidence: 99%

Research on quality control of precision machining straight internal gear by abrasive flow based on large eddy simulation

Zou

Yan

Wang

et al. 2022

Int J Adv Manuf Technol

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Traditional finishing technology is difficult to realize the precision machining of complex geometric parts. Abrasive flow machining technology solves this problem well. Taking the spur internal gear as the research object, the wall shear force, static pressure, dynamic pressure and abrasive velocity vector of the internal channel of the straight internal gear under different inlet velocity, abrasive concentration and abrasive particle size are analyzed by using the large eddy simulation method, and the action law of different parameters on the machining of straight internal gear by solid-liquid two-phase abrasive flow is discussed. At the same time, orthogonal test was carried out. The results show that the solid-liquid two-phase abrasive flow machining technology can effectively remove the burrs, pits and bulges on the tooth surface of spur internal gear, reduce the tooth surface roughness and improve the surface quality. The optimal combination of processing parameters and the primary and secondary order of various factors affecting processing are obtained by range analysis and analysis of variance. The regression equation is constructed by regression analysis to verify the effectiveness and accuracy of the model, which provides theoretical support and data reference for actual processing and production.

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Elbow precision machining technology by abrasive flow based on direct Monte Carlo method

Cited by 5 publications

References 47 publications

Research on Continuous Error Compensation of a Sub-Arc-Second Macro/Micro Dual-Drive Rotary System

Research on Continuous Error Compensation of a Sub-Arc-Second Macro/Micro Dual-Drive Rotary System

Quality control method of inner surface of valve sleeve in abrasive flow machining

Research on quality control of precision machining straight internal gear by abrasive flow based on large eddy simulation

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