Modelling and investigation of material removal profile for computer controlled ultra-precision polishing

Ren, Lijuan; Zhang, Guangpeng; Zhang, Lu; Zhang, Zhen; Huang, Yumei

doi:10.1016/j.precisioneng.2018.08.020

Cited by 32 publications

(7 citation statements)

References 21 publications

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“…υ represents Poisson's ratio and σ z is normal stress in the z-direction. According to Equation (5) and Equation (6), the displacement along the z-direction can be expressed by Equation (8):…”

Section: Contact Stress Prediction Model and Verificationmentioning

confidence: 99%

“…Material removal uniformity during lapping and polishing process has been a focus of research for years owing to its significant effects on processing efficiency and surface quality. [1][2][3][4][5][6][7] Preston equation (material removal rate [MRR] = KPV) has a wide range of applications in material processing, [8][9][10] where P is the contact stress, V is the relative velocity, and K is a coefficient related to the processing parameters. In terms of Preston equation, the non-uniformity of the distribution of P and V is the important source for the nonuniformity of MRR.…”

Section: Introductionmentioning

confidence: 99%

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Contact stress prediction model of double‐layer elastomer with functionally graded and composite structure

et al. 2021

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As hard and brittle materials are widely used in the modern industry, it is essential to effectively achieve uniform material removal. In the present study, a contact stress prediction model for double-layer elastomer under uniform displacement load was proposed. It aims to predict the contact stress distribution based on the structure size and material parameters of the double-layer elastomer and optimize the relevant parameters to improve the uniformity of material removal. The functionally graded and composite structured lapping and polishing plate (FG/CS-LPP) was developed by mixing abrasive particles and rubber with different mass ratios to get different Young's moduli. Through optical microscope, the surface morphology was observed, and the mechanism of Young's modulus gradient change was demonstrated. After numerical simulation analysis, the effect of Young's modulus fluctuation on contact stress distribution trend was evaluated. As for the contact stress prediction model, an equivalent Young's modulus model and compensation function H(z) was introduced to simplify the analytical process. Further, the obtained equivalent equation was verified by simulations and experiments with an average percentage deviation of~2% and~6%, respectively. By fitting calculated and simulated values with a deviation of less than 5%, the compensation function H(z) was established. Finally, the contact stress prediction model was obtained and validated by simulations and experiments, the percentage deviation is less than 13%. Accordingly, the contact stress prediction model can provide a theoretical basis for FG/CS-LPP to achieve uniform material removal.

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Section: Contact Stress Prediction Model and Verificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Contact stress prediction model of double‐layer elastomer with functionally graded and composite structure

et al. 2021

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“…for d and θ, respectively, we can get the magnetic field force of particle interaction as:   (12) where ed is the direction vector in the direction of the particle centerline, and eθ is the direction vector perpendicular to the direction of the particle centerline. Treat the radius of soft magnetic particles as equal, all of which are a, because μp is much larger than μ1; thus, equation ( 12) can be simplified as:…”

Section: Solution Of Contact Pressure Distributionmentioning

confidence: 99%

Investigation of the Polishing Mechanism of Magnetorheological Elastic Polishing Composites

Wang

et al. 2021

Preprint

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Computer-controlled ultra-precision polishing technology is widely used for high-quality surface processing. However, its polishing tool has some shortcomings, such as limited adaptability to the complex surface and easy to cause surface damage. Therefore, a new smart material-based abrasive tool named magnetorheological elastic polishing composites (MREPCs) and its flexible polishing method are proposed. This study first prepared MREPCs and developed a polishing tool for MREPCs. Then, the material properties of MREPCs were obtained by theoretical and experimental analysis, and the tool influence function (TIF) of the hemispherical MRPECs was established according to the Hertz contact theory, the variable rheological theory and the Preston equation. Finally, the TIF and the polishing performance of MREPCs were verified by polishing experiments. The results show that the theoretical and the experimentally measured TIF models have a high coincidence, and the developed MREPCs can remove surface material with high precision. The above preliminary study indicates that MREPCs are promising for ultra-precision machining of small-sized parts with complex profiles.

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“…Nowadays, there are many studies on the establishment of the material removal function model of abrasive particle fixation or semi-fixation polishing tools, almost all based on the Preston's equation. For example, in the polishing process, some scholars used the finite element method to solve the pressure distribution in the polishing contact area [9][10][11], and some scholars used Hertz contact theory to analyze the material removal function in the polishing process and obtained the pressure distribution in the polishing contact area [12,13]. In addition, PAN et al…”

Section: Introductionmentioning

confidence: 99%

Investigation of the polishing mechanism of magnetorheological elastic polishing composites

Wang

et al. 2021

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Computer-controlled ultra-precision polishing technology is widely used for high-quality surface processing. However, its polishing tool has some shortcomings, such as limited adaptability to the complex surface and easy to cause surface damage. Therefore, a new smart material-based abrasive tool named magnetorheological elastic polishing composites (MREPCs) and its flexible polishing method are proposed.This study first prepared MREPCs and developed a polishing tool for MREPCs. Then, the material properties of MREPCs were obtained by theoretical and experimental analysis, and the tool influence function (TIF) of the hemispherical MRPECs was established according to the Hertz contact theory, the variable rheological theory and the Preston equation. Finally, the TIF and the polishing performance of MREPCs were verified by polishing experiments. The results show that the theoretical and the experimentally measured TIF models have a high coincidence, and the developed MREPCs can remove surface material with high precision. The above preliminary study indicates that MREPCs are promising for ultra-precision machining of small-sized parts with complex profiles.

show abstract

Modelling and investigation of material removal profile for computer controlled ultra-precision polishing

Cited by 32 publications

References 21 publications

Contact stress prediction model of double‐layer elastomer with functionally graded and composite structure

Contact stress prediction model of double‐layer elastomer with functionally graded and composite structure

Investigation of the Polishing Mechanism of Magnetorheological Elastic Polishing Composites

Investigation of the polishing mechanism of magnetorheological elastic polishing composites

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