Inner diameter positioning and external expansion tool for circular ring thin-wall part

The utility model discloses an inner diameter positioning external expansion tool of a circular ring thin-wall part, which comprises a transmission element, a connecting rod, a mounting seat and an external expansion block, the external expansion block is fixedly connected on the end face of the mounting seat, the transmission element is fixedly connected with the connecting rod, and the connecting rod is fixedly connected with the mounting seat. According to the inner diameter positioning and external expanding tool for the circular ring thin-wall part, the contact area between the inner diameter positioning and external expanding tool and the workpiece is large, the clamping stroke is small, the product is not prone to deformation in the machining process, the clamping force borne by the workpiece is more uniform, and the machining precision is guaranteed. 本实用新型公开了一种圆环薄壁件的内径定位外胀工装，包括：传动元件，连接杆，安装座和外胀块，所述外胀块在安装座端面上固定连接，所述传动元件与连接杆固定连接，所述连接杆与安装座固定连接。本实用新型提供了一种圆环薄壁件的内径定位外胀工装，与工件的接触面积较大，夹紧程小，且不易在加工时产品产生变型，工件受到的夹紧