The paper presents a new way for piston noncircular pin hole boring which uses a piezodriven displacement mechanism through a flexible hinge.The working principle of the mechanism has been analyzed.

• 提出一种新型活塞异形销孔数控加工方法,该方法采用一个基于压电陶瓷驱动的柔性铰链机构来实现镗刀的径向微位移。