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针对Al2O3陶瓷材料半球陀螺谐振子的难加工性,基于超声旋转磨削加工技术研究了其加工过程关键技术,包括超声振动频率选取,刀具结构参数和切削力对谐振子加工影响,以及壁厚均匀性加工。通过模态分析确定超声振动频率;建立了刀具结构参数与薄壁壳体加工表面质量之间数学模型;利用有限元软件研究在切削力作用下谐振子受力变化情况;并分析了由于装夹误差造成的壁厚加工不均匀现象,建立了其数学模型。
Aiming at the difficult processing of Al2O3 ceramic material hemispherical gyro resonator, the key technologies of the machining process are studied based on ultrasonic rotary grinding technology, including the selection of ultrasonic vibration frequency, the influence of cutting tool parameters and cutting force on the resonator processing, Sex processing. The frequency of ultrasonic vibration was determined by modal analysis. The mathematical model between tool structural parameters and the machined surface quality of thin-walled shell was established. The finite element software was used to study the force variation of the resonator under the action of cutting force. The wall thickness caused by the error is uneven, and its mathematical model is established.