Calculation Method of Laser Spot Coincidence Degree of Laser Micro Machining

Abstract:

Laser micro machining is one of modern precision machining methods, which has significance on the modern manufacturing. The solid-state pulse laser (YAG) is processed by overlapped laser spots to remove material from a surface. Through studying the single pit with single pulse laser, the paper proposes two parts-melted part and molten pool and three parameters to describe single pit topography. Meanwhile it puts forwards the relation of the coincidence degree and the feed rate of the worktable, because the single pit model is the basic unit of convex and concave topography, affected by pulsed spot coincidence degree, and the coincidence degree is directly determined by the worktable feed rate, therefore it derives the relationship between the spot coincidence degree and the worktable feed rate. Using the scanning electron microscope (SEM) to photograph the machined surface, it verifies the correctness of the model of the coincidence degree and the worktable feed rate.

• Periodical: Advanced Materials Research (Volume 1095)
• Pages: 704-710
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1095.704
• Online since: March 2015
• Authors: Feng Long Yao, Li Bin Guo, Yun Fei Duan, Meng Guo
• Keywords: Coincidence Degree, Feed Rate, Laser Micro Machining

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