一种高精度台式旋转超声岩石取心装置

将野外采集或实验室合成的岩石样品制备成小尺寸柱状岩心样品，是进行地质学岩石高温高压物性实验的重要环节.岩石样本的脆硬性和成分不均匀性严重影响常规岩石磨削取心加工过程的稳定性和取心质量.将取样工具的旋转超声振动与岩石磨削加工过程相结合，并通过气动系统实现岩石样本在竖直方向上的柔性进给，所研制的台式旋转超声岩石取心装置可实现实验室小尺寸柱状岩心样品的高精度自动磨削取心加工过程.多种不同地质材料的取心测试结果表明，该装置能进行不同硬度岩石样品的高效率和高质量小直径取心加工，满足地质学高温高压实验的高标准制样需求. 

A High-Precision Bench-Toprotary Ultrasonic Rock Coring Device

The preparation of small-size cylindrical rock samples from the rock samples collected in field or synthesized in the laboratory is an important procedure for high-pressure and high-temperature rock physics experiments in geosciences. The brittle hardness and in homogeneity of rock samples can affect significantly the stability and coring quality of conventional rock core grinding process. To overcome this technique difficulty, we combined the techniques of rotary ultrasonic vibration and rock grinding and developed a flexible high-pressure air-operated sample feeding system along the vertical direction in a bench-top rotary ultrasonic rock coring device. This device can realize high-precision automatic coring and grinding of small-size cylindrical rock specimen.The coring tests on rock specimens of various hardness show that the new device can conduct high-efficiency and highquality small-diameter sample coring and satisfy the high-standard requirements of high-pressure and high-temperature geological experiments.