Abstract
In this work, a theoretical analysis of surface generation numerical model is presented to predict the surface roughness achieved by side milling operations with cylindrical tools. This work is focused on the trajectory of tools with two teeth by the influence of tool errors such as radial runouts, as well as straightness with dynamic effects. A computational system was developed to simulate roughness topography in contour milling with cylindrical tool. Finally, the PSO (particle swarm optimization) algorithm is employed to find the optimal machining position for the best surface roughness. Experimental data is satisfied with the novel protection model for the tooth’s trajectory, and the final prediction accuracy is high enough, i.e. that the prediction surface roughness. Low prediction surface roughness error (1.37~15.04%) and position error (0.95~1.25 mm) indicate effectiveness of the model built in this work. The novel model may be used to determine the variation in surface roughness.
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Abbreviations
- L r [mm]:
-
The sampling length
- R a [μm]:
-
Average roughness
- R z [μm]:
-
Peaks and valleys (h)
- a p [mm]:
-
Radial depth of cut
- n [rpm]:
-
Spindle speed
- v [mm min−1]:
-
Feed speed
- R t [mm]:
-
The tool radius
- f Z [mm tooth−1]:
-
Feed per tooth
- h [mm]:
-
Maximum undeformed chip thickness
- α [°]:
-
Angle of teeth
- Z [No.]:
-
Number of teeth
- ε Y [μm]:
-
Radial runout
- ε X [μm]:
-
Axial runout
- Y X [μm]:
-
The straightness of Y in X direction
- ∆s [mm]:
-
Distance from processing position
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Funding
This research was funded by the National Natural Science Foundation of China (Grant No. 52005397), National Postdoctoral Program for Innovative Talents (Grant No. BX20180250), and Complete equipment project for ultra-precision processing of optical materials (TC190JED-207; TC190JED-210).
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Jinfeng Bai designed the research scheme and carried out the research process and so on. Huiying Zhao proposed research topic selection and guidance support. Lingyu Zhao and Mingchen Cao collected and organized the data. Duanzhi Duan investigated, organized, and revised the literature.
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Bai, J., Zhao, H., Zhao, L. et al. Modelling of surface roughness and studying of optimal machining position in side milling. Int J Adv Manuf Technol 116, 3651–3662 (2021). https://doi.org/10.1007/s00170-021-07463-y
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DOI: https://doi.org/10.1007/s00170-021-07463-y