An ingenious mechanism based on magnetic force was designed for separating iron powder and paper scraps in order to solve the problem that iron powder which was used as medium to fix honeycomb workpiece was polluted by paper scraps after milling machining process in the honeycomb fixture method based on magnetic and friction force. The two step separation method, swing sieve followed by magnetic separating, was adopted according to the form of scraps. Through characteristic analysis of linkage mechanism, a way to control swing frequency by adjusting motor speed of eccentric wheel was accepted. According to the roller structure, magnetic field intensity value of iron powder area was calculated, not less than 0.107 T, and a way to control iron powder thickness by adjusting motor speed of roller was applied. Magnetic subassembly structure with guide pole was selected through finite element analysis and result contrast. Guide pole thickness should be 15～20 mm, and air gap should be 20～25 mm．
LIU Gang, LIU Chun, ZHANG Ming, KE Zhen-zheng, KE Ying-Lin, LI Wen-qing,ZHAO Xue. Separating mechanism design for iron powder and paper scraps based on magnetic force . J4, 2013, 47(7): 1267-1274.
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