A method for predicting the milling force of end face milling cutter combined with SVM

A prediction method and face milling cutter technology, applied in the direction of instrumentation, calculation, design optimization/simulation, etc., can solve the problems of large cutting force error, decreased cutting force calculation accuracy, long calculation time, etc., to improve efficiency and shorten simulation time , the effect of reducing the amount of calculation
CN109543329AActive Publication Date: 2019-03-29XIAMEN UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAMEN UNIV
Publication Date
2019-03-29

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Abstract

The invention relates to a method for predicting the milling force of an end face milling cutter combined with SVM, which relates to an ultra-precision machining technology. The simulation parametersof different cutting depth and different radial feed back are designed, and the geometric model is established. The round corners are arranged at the cutting edge position of the insert, and the insert only takes the tip part which is in contact with the workpiece, so that the mesh can combine the shape of the micro-structure on the insert. After getting the simulation value, the mixed kernel function SVM algorithm is used to fit the simulation value. the tool tip kinematics model is computed. According to the kinematics model, At that current phase angle, the cut forces of each insert are calculated by substituting the cutting force model into the cutting force model. The cutting forces are divided into three directions: axial force, radial force and tangential force, which are convertedinto tool axial force Fz, feed direction force Fy and perpendicular feed direction force Fx, and the cutting forces are directly superposed and solved.
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Description

technical field

[0001] The invention relates to ultra-precision machining technology, in particular to a method for predicting the milling force of an end mill combined with SVM, which can be used in the calculation of the vibration of the main shaft and the calculation of the roughness of the machined surface. Background technique

[0002] There are usually three traditional cutting force prediction methods: 1. empirical formula, 2. cutting force coefficient identification (Engin S, Altintas Y. Mechanics and dynamics of general milling cutters.: Part II: inserted cutters [J]. International Journal of Machine Tools&Manufacture,2001,41(15):2195-2212; Yao Q, Wu B, Luo M, et al.On-line cutting force coefficient identification for bull-end milling process with vibration[J].Measurement,2018,125.( 2)), 3. Overall tool cutting force finite element simulation (Tapoglou N, Antoniadis A.3-Dimensional kinematics simulation of face milling[J].Measurement,2012,45(6):1396-1405.), cutting ...

Claims

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