Tool removal function modeling and processing parameters optimization for bonnet polishing

Feng, Yunpeng; Heng-yu, WU; Cheng, Haobo

doi:10.1080/15599612.2016.1223236

Cited by 16 publications

(4 citation statements)

References 17 publications

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“…For dimple tools, the removal profile along the x-axis and the y-axis are approximately consistent with an isosceles triangular shape. based on equation (6). The spindle speed and tool offset are fixed at 600 rpm and 1.5 mm, respectively.…”

Section: Polishing Pressure For Morphable Polishing Toolsmentioning

confidence: 99%

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Image processing–based material removal rate analysis of morphable polishing tools with labyrinth and dimple textures

Nie,

Kaiyuan

2024

Int J Adv Manuf Technol

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Morphable polishing tools are capable of finishing diamond turned surfaces with roughness in the nanometre range. The material removal rate of morphable tools polishing is challenging to calculate due to the labyrinth and dimple textures. This paper introduces a multi-scale theoretical model for predicting the material removal rate of morphable polishing tools. The model includes the polishing veslocity, polishing pressure, material removal by an abrasive, and number of effective abrasives. First, polishing velocity is obtained by tool kinematics analysis. Second, polishing pressure is obtained based on image processing. Theoretical polishing pressure is calculated by polishing pressure equations. Morphable tool texture images are binarized and conducted with Boolean product of the theoretical polishing pressure images to get the morphable tool polishing pressure. The morphable tool polishing pressure and twelve-image averaged pressure are conducted with Boolean product of the polishing velocity to obtain the instant and average material removal rate. Then the polishing pressure and material removal rate model are validated through pressure measurement and polishing tests, respectively. It is found that the polishing spot is ellipse shape with long axis (10.6 mm) and short axis (9.6 mm). The material removal rate for smooth tools along the short axis is almost constant while it steadily increased along the negative long axis. For labyrinth tools, the material removal rate along the short axis and the long axis is a trapezoidal shape and scalene triangular shape. For dimple tools, the material removal rate along the long axis and the short

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Section: Polishing Pressure For Morphable Polishing Toolsmentioning

confidence: 99%

“…Feng et al [6] calculated the velocity from the tool-motion geometry, fitted parabolic pressure distribution from Hertzian contact theory to simulate MRR. Pan et al [7] established polishing forces based MRR.…”

Section: Introductionmentioning

confidence: 99%

Image processing–based material removal rate analysis of morphable polishing tools with labyrinth and dimple textures

Nie,

Kaiyuan

2024

Int J Adv Manuf Technol

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“…In a previous study, the Hertz contact theory was used to analyze the contact area and the pressure distribution. 25 In bonnet polishing, the polishing tool is made of hyper-elastic material that can produce large deformation. Therefore, it is inaccurate to establish the contact model in bonnet polishing by the Hertz contact theory.…”

Section: Contact Model In Bonnet Polishingmentioning

confidence: 99%

“…Raster distance, Z -axis offset, inner pressure, H -axis speed, and precession angle were considered in their study. Feng et al 25 simulated the removal function based on the velocity and pressure distributions. Compared with the study of Wang et al, Feng et al took into account the concentration of the polishing slurry; thus, the accuracy of the obtained model was improved.…”

Section: Introductionmentioning

confidence: 99%

Polishing path generation for physical uniform coverage of the aspheric surface based on the Archimedes spiral in bonnet polishing

Zhao

Zhang

Han

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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As a new polishing method, bonnet polishing is suitable for polishing the curved surface due to its advantages in flexibility and adaptability of the polishing tool. In the polishing process, the contact state between the bonnet and the curved surface always changes. The traditional polishing tool path with equal interval will inevitably lead to over-polished areas and unpolished areas. In this article, a new tool path for bonnet polishing, which is called the revised Archimedes spiral polishing path, is proposed to ensure the physical uniform coverage of the curved surface in bonnet polishing. The path generation method is based on the modified tool–workpiece contact model and the pointwise searching algorithm. To prove the effectiveness of the revised path, two aspheric workpieces were polished along the traditional Archimedes spiral polishing path and the revised path, respectively. The roughnesses of the two workpieces are 10.94 and 10 nm, and the profile tolerances are 0.4097 and 0.2037 μm, respectively. The experimental results show that the revised path achieves lower roughness and surface tolerance than the traditional Archimedes path, which indicates that the revised path can achieve uniform physical coverage on the surface.

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Influencing mechanism of the key parameters during bonnet polishing process

Pan

Zhong

Wang

et al. 2017

Int J Adv Manuf Technol

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Tool removal function modeling and processing parameters optimization for bonnet polishing

Cited by 16 publications

References 17 publications

Image processing–based material removal rate analysis of morphable polishing tools with labyrinth and dimple textures

Image processing–based material removal rate analysis of morphable polishing tools with labyrinth and dimple textures

Polishing path generation for physical uniform coverage of the aspheric surface based on the Archimedes spiral in bonnet polishing

Influencing mechanism of the key parameters during bonnet polishing process

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