Abstract
In order to develop the preparation process of sand blank for NC milling requirements, the study of the material and the formula of sand blank are performed by experiment method. In order to obtain the optimal cutting parameters combination, the study is performed to evaluate the NC milling accuracy influence of sand mold for different cutting parameters by orthogonal experiment method. And the NC milling problems of sand mold such as avalanche angle, crack and uneven surface etc are solved by the above studies. The feasibility and effectiveness of the research findings are finally verified by the specific machining example. So, the whole technology solution of the preparation of sand blank and the NC precision milling of complex sand mold could be provided in this paper.
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