The utility model discloses a bush flaring and
flanging tool which comprises an upper die, a lower die, a forming punch, a buffer cover, a driving
piston, a guide rod and a buffer
assembly, the upper die is connected to the top of the lower die in a sliding mode through the guide rod, and the center of the lower die is provided with a forming boss protruding towards the top. The top end face of the forming boss is provided with a positioning
punching groove where a lining is embedded, the center of the end face of the upper die is provided with a hollow column extending downwards, the forming punch is axially connected into the hollow column in a sliding mode, one end of the forming punch extends out of the hollow column, and the other end of the forming punch is provided with a driving
piston axially sliding in the hollow column. The buffer cover is arranged at the other end of the hollow column for sealing; the forming punch in the tool is used for flaring and
flanging the lining, and the annular punch is used for trimming after
flanging is completed, so that the processes of flaring, flanging and trimming are completed by one set of tool, stations do not need to be switched again in the whole
machining process, and meanwhile, the purpose of improving the working efficiency can be achieved.