Simulation and experimental research of tool path planning on profile and surface generation of aspherical-cylindrical lens array by ultra-precision envelope grinding

Yu, Shimeng; Yao, Peng; Ye, Zhen; Wang, Wei; Chu, Dongkai; Qu, Shuoshuo; Huang, Chuanzhen

doi:10.1016/j.jmatprotec.2022.117690

Cited by 12 publications

(3 citation statements)

References 25 publications

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“…Iso-parametric and iso-residual strategies are frequently employed in tool path planning for surface grinding [27]. Because the grinding wheel wears down during the grinding process of a CVD rotary dresser, controlling the residual height becomes challenging.…”

Section: Tool Path Planningmentioning

confidence: 99%

Research on the precision machining of CVD rotary dressers based on graded grinding and real-time profile planning path of grinding wheel

Zhu,

Tie,

Zhao

et al. 2024

Int J Adv Manuf Technol

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Dressing wheels with CVD rotary dressers are widely used in the grinding process. To meet the accuracy requirements of dressing grinding wheels, the profile accuracy of CVD rotary dressers must be processed to the micron level. However, CVD diamond is a hard and brittle material, making it difficult to machine to a high degree of shape and dimensional accuracy. A graded grinding method is proposed in this paper to achieve precision machining of the CVD rotary dresser. The normal residual error is calculated by measuring the difference between the actual grinding profile and the target profile along the normal direction first, and then graded compensation processing is carried out based on the magnitude of the normal residual error. In the grinding process, it is proposed that the grinding path be planned according to the real-time profile of the grinding wheel. Experiments on a CVD rotary dresser for the NILES ZP 12 gear grinder showed that the profile accuracy (Peak to Valley, PV) of the CVD rotary dresser was improved from 14.79µm to 1.57µm after grinding. The fluctuation of the arc radii of CVD diamonds in different phases along the circumferential direction was reduced from 0.0117mm to 0.0019mm.

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Section: Tool Path Planningmentioning

confidence: 99%

Research on the precision machining of CVD rotary dressers based on graded grinding and real-time profile planning path of grinding wheel

Zhu,

Tie,

Zhao

et al. 2024

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…These deviations are reflected in the different spatial frequencies in spatial distribution. Scholars divide the frequency band error into three parts: the Figure, Mid-Spatial Frequency (MSF), and High Spatial Frequency (HSF) [25,35]. The scallop height is defined as the unremoved area between adjacent grinding wheel paths.…”

Section: The Correlation Between Scallop Height and Surface Roughnessmentioning

confidence: 99%

“…This method can obtain a surface scallop height that conforms to the three-dimensional roughness sampling characteristics, and realize the prediction of the three-dimensional roughness following ultra-precision grinding. Yu et al [25] proposed a multi-scale model that uses different wheel paths for grinding and predicts the surface topography of micro-aspheric-cylindrical structural array (MACSA) mold ground.…”

Section: Introductionmentioning

confidence: 99%

Effect of Wheel Path in Raster Grinding on Surface Accuracy of an Off-Axis Parabolic Mirror

Li,

Guo

et al. 2023

Applied Sciences

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Off-axis parabolic mirrors have extensive applications in X-ray optics, with the precision of their curvature directly impacting grazing-incidence focusing performance. Notably, the off-axis parabolic surface has non-rotating and non-symmetrical characteristics. Ultra-precision raster grinding utilizing a diamond wheel is a common method. Crucially, establishing an optimal wheel path stands as the key to ensuring surface accuracy during off-axis paraboloid grinding. In this study, according to the double curvature property of an off-axis parabolic surface, two different wheel paths were compared: one tracing the meridian direction (parabolic generatrix) and the other following the arc vector direction (arc). The results showed that the wheel path in raster grinding stepping along the arc vector direction can obtain a smaller scallop height and higher surface accuracy. The surface accuracy of one step along the arc vector direction is 9.6 μm, and that of the other step along the meridian direction is 32.6 μm. A model of the scallop height was established based on the relative relationship between adjacent wheel paths, and the error is within 5%. According to the correlation between scallop height and shape error, we conducted an analysis of the spatial distribution of shape errors under varying wheel paths. The wheel path that steps along the arc vector is more suitable for raster grinding of the off-axis paraboloid. The above study can provide theoretical guidance for the wheel path planning of off-axis parabolic mirrors with high surface accuracy.

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A high-precision prediction model for surface topography of abrasive belt grinding considering elastic contact

Liu

Song

Xiao

et al. 2022

Int J Adv Manuf Technol

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Simulation and experimental research of tool path planning on profile and surface generation of aspherical-cylindrical lens array by ultra-precision envelope grinding

Cited by 12 publications

References 25 publications

Research on the precision machining of CVD rotary dressers based on graded grinding and real-time profile planning path of grinding wheel

Research on the precision machining of CVD rotary dressers based on graded grinding and real-time profile planning path of grinding wheel

Effect of Wheel Path in Raster Grinding on Surface Accuracy of an Off-Axis Parabolic Mirror

A high-precision prediction model for surface topography of abrasive belt grinding considering elastic contact

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