A Method for Predicting the Stability Region of Lateral Chatter in Rotary Ultrasonic Drilling
A technology of rotary ultrasonic and prediction method, which is applied in geometric CAD, design optimization/simulation, special data processing applications, etc., and can solve problems such as no prediction model suitable for rotary ultrasonic drilling
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[0110] The drilling force coefficient is calculated from the experiment of rotary ultrasonic drilling aluminum alloy, and the results are shown in Table 1. The dynamic parameters of the rotary ultrasonic drilling system obtained through the modal parameter identification experiment are shown in Table 2. Feed per revolution f r 0.01mm, ultrasonic vibration amplitude A is 0 / 10 / 20μm, ultrasonic vibration frequency F is 20KHz and the number of tool teeth is N f for 2.
[0111] Table 1 Drilling force coefficient
[0112]
[0113] Table 2 Modal parameters of rotary ultrasonic drilling system
[0114]
[0115] Through the prediction method described above, three stability curves with ultrasonic vibration amplitudes A of 0 / 10 / 20 μm were calculated and drawn. According to the definition of the stability curve, the stability region of the system is below the curve. It can be found that the addition of rotational ultrasonic vibration realizes the expansion of the drilling stab...
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