Frictional stress wave propagation and attenuation characteristics on the flank face of a high-efficiency milling cutter

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Journal of Vibration and Shock ›› 0

ZHAO Peiyi,OUYANG Yijie,JIANG Bin,JIANG Yupeng

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Abstract

During the high-efficiency milling, under the action of high-frequency and intermittent cutting loads, the contact angle and posture between the milling cutter and the workpiece change frequently, making the relative friction and stress waves generated at the tool-workpiece interface dynamically change, leading to difficulty in accurately identifying and predicting friction damage and wear life during high-efficiency milling. A dynamic contact relationship model between the milling cutter and the workpiece under the influence of cutter error and milling vibration was constructed. The frictional force on the flank face of the milling cutter tooth was solved. Based on the one-dimensional string theory, a solution method for calculating the propagation distance, change rate and attenuation rate of frictional stress wave on the flank face of the cutter tooth was proposed. The results show that the stress wave peak value and change rate are greater near the cutting edge. The attenuation process of frictional stress waves in high-efficiency milling cutters shows biased exponential attenuation. The correlation verification results of the stress wave calculation method show that the energy of the feature points on the flank face of the cutter teeth has a correlation of more than 0.8 with the experimental accumulated wear depth, verifying the accuracy of the model.

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high efficiency milling cutters / flank face / friction / stress wave

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ZHAO Peiyi, OUYANG Yijie, JIANG Bin, JIANG Yupeng. Frictional stress wave propagation and attenuation characteristics on the flank face of a high-efficiency milling cutter[J]. Journal of Vibration and Shock, 0

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