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发明公开
CN103552975A 液压微位移驱动器及微位移装置 无效 - 驳回

液压微位移驱动器及微位移装置
摘要：
本发明提供一种液压微位移驱动器及微位移装置，至少包括：设有内腔（18）的缸筒（13）；密封所述缸筒（13）两端的上端盖（12）以及下端盖（15）；位于所述上端盖上表面的球形凸台（11）；所述球形凸台的中心线与所述缸筒的中心线重合；设置于所述下端盖（15）内与所述内腔连通的进油通道（14）以及与所述进油通道（14）导通的进油嘴（17）。本发明提出的液压微位移驱动器采用向密封的缸筒内充进一定压力的液体使得圆柱形管状缸筒产生相应的轴向伸长来实现微位移驱动，具有驱动行程较大、驱动平稳、抗干扰能力强以及皮实耐用等特点，克服了压电晶体驱动行程小、稳定性较差缺陷。
摘要（英）：

The invention provides a hydraulic micro-displacement driver and a micro-displacement device. The hydraulic micro-displacement driver at least comprises a cylinder barrel (13) with an inner cavity (18), an upper end cover (12) and a lower end cover (15) used for sealing the two ends of the cylinder barrel (13), a spherical boss (11) positioned on the upper surface of the upper end cover, an oil inlet channel (14) arranged in the lower end cover (15) and communicated with the inner cavity, and an oil inlet nozzle (17) communicated with the oil inlet channel (14), wherein the central line of the spherical boss coincides with the central line of the cylinder barrel. According to the hydraulic micro-displacement driver provided by the invention, the sealed cylindrical and tubular cylinder barrel is filled with liquid with certain pressure to correspondingly axially elongate, so as to realize micro-displacement driving; the hydraulic micro-displacement driver has the characteristics of larger driving stroke, high stability in driving, high anti-interference ability, durability and the like, and overcomes the defects about small driving stroke of piezoelectric crystal and poorer stability.

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