根据气压流体控制原理，采用气动直线驱动技术和真空吸附技术，研制出气动送料机。
According to air flow control principle, by adoption of pneumatic line drive technology and vacuum suction technology, pneumatic feeding mechanism was manufactured.
特点：本机采用四凸轮及连杆原理，驱动下工作台(下工作台面安装下模具)，作直线运动和翻转运动。
Feature: our machine adopted four-cams and connecting rod elements to drive lower workbench which the mould on it, do rectilinear movement and tilting motion.
提出了一种矩形振子面内弯曲模态直线超声电机，分析了振子面内弯曲模态的激发原理及电机的驱动机理。
A linear ultrasonic motor based on the two different in-plane bending modes of rectangular actuator were presented.
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