Method for prediction of flutter in numerical-control milling of mold cavities

• Main Authors: JIANG YANCUI, LIU XIANLI, CUI JIAN, QIU YAN
• Format: Patent
• Language: Chinese; English
• Published: 06.11.2018
• Subjects: MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; MILLING; PERFORMING OPERATIONS; TRANSPORTING

The invention relates to a method for prediction of flutter in numerical-control milling of mold cavities, aiming to solve problems that conventional methods for predicting stability in milling utilizing single tool path are low in applicability, which causes low accuracy of flutter prediction, accelerates failure of tools and affects processing quality of mold cavities. The method for predictionof flutter in numerical-control milling of mold cavities includes the step 1, building the relative transfer function of a tool-workpiece system; the step 2, introducing the relative transfer function of the tool-workpiece system to a three-dimensional milling stability model to obtain a critical axial cutting depth at the milling flutter frequency of a milling cutter; the step 3, judging whetherthe mold cavities flutter in numerical-control milling according to the critical axial cutting depth obtained in the step 2. The method is applied to the field of numerical-control milling of the mold cavities. 种预测模具型腔数控铣削中颤振的