Quantitative characterization of Poisson burrs on the V-shaped texture based on the volume method

During the original mold cutting process of a V-groove optical functional textured film, the Poisson burr will affect the optical properties of the textured film. Using traditional methods, the height or width of the Poisson burr cannot accurately characterize the three-dimensional feature information of the burr. This paper presents a novel method for quantitatively characterizing Poisson burrs by using the volume parameter. The unit length volume parameter VUL of a Poisson burr is defined. The burr volume is calculated using the integration method in the height direction within the sampling length, and an expression of the unit length volume for the Poisson burr is derived. According to the characteristics of burrs generated during V-groove microcutting, the relationship between cutting process parameters and burr size is analyzed. The unit length volume VUL is used to find the optimal microcutting parameters. The experimental results show that when using a cutting speed of 15 mm/s and a cutting depth of 2.0 μm, the minimal unit length volume VUL of the Poisson burr produced by machining the V-groove microstructure is 0.132 μm3/mm. The optimal roughness of the V-groove side surface is obtained as Ra = 13 nm with the corresponding cutting parameters.

Abstract licence: CC BY-NC

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