Experimental study on lapping ceramic balls with variable-radius groove plate

Zhou, Fenfen; Yao, Weifeng; Yuan, Ju Long; Lyu, Binghai; Zhao, Tianchen; Zhao, Ping

doi:10.1177/16878140211033416

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…For plane polished, chemical mechanical method produces chemical reaction between polishing slurry and carbide subsurface. Adding modified fiber into polishing pad to make abrasive particles contact with workpiece evenly [16][17][18]. Xi-Zeng et al [19] and Song et al [20] raise the problem that local concentration about particles that makes a lot of scratches on surface.…”

Section: Introductionmentioning

confidence: 99%

Research Polyphenylene Sulfide Fiber-Reinforced Elastic Wheel Polishing based on Soft Consolidation Abrasive

yisen

Zeng

2022

Preprint

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In industry 4.0 background, traditional technical industry is mentioned more and more times. Technological innovation has been advanced in precision-machine internationally. Faced to remained peak of surface layer distributed non-uniformly, this article proposes polyphenylene sulfide fiber-reinforced method to get highly sophisticated surface. Based on different hard matrix rubber of wheels, fiber added into wheels to improve elastic modulus and guarantees abrasive particles which contacts with workpiece distributed evenly while polishing. This method reduces scratches and avoids subsurface damage when wheel polishes in declining angle. Compared to different proportional fiber, two hard wheels in 5% fiber can get smoother and parallel surface when wheel rotates in high speed. Predicted model of rubber built based on Halpin-Tsai empirical formula, which displays elastic modulus of fiber is much higher than matrix rubber and adds polyphenylene sulfide can enhance anti-truncation ability of wheel exponentially. Rubber surface layer supports soft consolidation abrasive elastically to ensure particles arranged horizontally which can be reflected from observing deformation and stress of wheel by ansys. This phenomenon called elastic support that guarantees every particle have same volume material removed on contact area to get smoother surface. In following polishing experiments, carbide surface polished by 5% fibrous elastic wheel is the best among 0%, 2% ,4% and 5% polyphenylene sulfide. Fiber-reinforced elastic wheel surely promotes carbide polished effectively.

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Section: Introductionmentioning

confidence: 99%

Research Polyphenylene Sulfide Fiber-Reinforced Elastic Wheel Polishing based on Soft Consolidation Abrasive

yisen

Zeng

2022

Preprint

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Advances in ultra-precision machining of bearing rolling elements

Zhang

Geng

et al. 2022

Int J Adv Manuf Technol

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Research on the Roundness Approximation Search Algorithm of Si3N4 Ceramic Balls Based on Least Square and EMD Methods

et al. 2023

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This paper aims to obtain the best shape accuracy evaluation algorithm for silicon nitride ceramic balls after lapping, and to extract the initial signal of the ball surface to improve the accuracy and reliability of the algorithm. The research methods of this paper are as follows: Firstly, an analysis of the uniform envelope of the lapping trajectory of ceramic balls is carried out to verify whether the lapping trajectory after processing can achieve a consistent envelope on the balls’ surface. On this basis, it is found through experiments that the standard deviation SD between the roundness deviations of different contour sections is small. The value is maintained at approximately 0.03 μm, and the roundness deviation can approximately replace the spherical deviation. Then the different contour sections of the sphere are sampled by the Taylor roundness instrument. Considering the uncertainty, the sampling points of different contour sections are averaged and used as the original signal of the sphere surface. Then the EMD method is used to process the signal to be detected on the sphere surface. The initial signal of the sphere surface is extracted by judging whether the number of ripples Kc obtained by decomposition is greater than the critical value. Then the initial signal is used as the input value of the approximation algorithm. Through the roundness deviation approximation algorithm based on the least square method, the given minimum approximation domain range is finely processed. The divided fine points are used as the center of the circle to intersect with the initial signal. The maximum, minimum, and range of each circle are calculated to obtain the roundness error based on the minimum circumscribed circle, the maximum inscribed circle, and the minimum region method. Finally, the calculated values are compared with those obtained by the traditional algorithm. The experimental results of this paper show that the algorithm is consistent with the roundness error measured by the instrument, compared with the mainstream evaluation criteria. In summary, the conclusions can be drawn as follows: Through a large number of experimental cases and comparative experiments, the algorithm has high accuracy and reliability. The research results of this paper have essential reference significance for accurately evaluating the shape accuracy of ceramic balls in actual production.

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Experimental study on lapping ceramic balls with variable-radius groove plate

Cited by 3 publications

References 17 publications

Research Polyphenylene Sulfide Fiber-Reinforced Elastic Wheel Polishing based on Soft Consolidation Abrasive

Research Polyphenylene Sulfide Fiber-Reinforced Elastic Wheel Polishing based on Soft Consolidation Abrasive

Advances in ultra-precision machining of bearing rolling elements

Research on the Roundness Approximation Search Algorithm of Si3N4 Ceramic Balls Based on Least Square and EMD Methods

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