The paper describes a kind of mobile drill clamp that fits different-diametical bolt holes and hole numbers.And details the functions and application ways of each parts and their conditions in site.

• 介绍一款能适应多种螺栓孔(或光孔)所在圆的直径(简称孔位直径)和孔数的可转位钻孔夹具结构,并详细说明了各个部件的功用和使用方法以及现场使用情况。