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《Foundry》 2016-03
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Sand Model Milling Force Prediction Calculation and Fracture Surface Analysis

RAO Jiang-hua;XU Zhi-feng;XIE Yun-long;ZHAO Kai-fa;NIE Ming-ming;LIANG Xiao-wen;National Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology, Nanchang, Hangkong University;  
With the blank of coated sand as research object, the influences of milling depth, milling breadth,feeding speed and cutting width on milling force were studied. Also, we set up the maximum mathematical model of the milling force through the orthogonal experiments and the multiple linear regression analysis, and did a significant test to this model as well. We observed the milling fracture morphology through the SEM and analyzed the cause of the sand milling fracture. The experiment shows that the maximum cutting force of the Z axis direction increases with the increase of cutting depth, but with the increase of spindle speed, feed rate,cutting width, the milling force is very small and stable. In the process of milling the sand blanks, the main reason of the fracture is that the uneven sand blanks strength, the deep milling force and the quickly feeding speed.
【Fund】: 江西省自然科学基金项目(20151BAB206039);; 江西省科技攻关项目(20133BBE50025);; 江西省教育厅科技落地计划项目(DB20130301)
【CateGory Index】: TG54
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