Full -automatic duplex position cast iron pipe hole polisher

The utility model relates to a full -automatic duplex position cast iron pipe hole polisher, the trusteeship rotary part install subaerial, and the step -by -step device of automatic business turn over pipe is installed on trusteeship rotary part's upper portion, and polishing the dolly and install in trusteeship rotary part's support both sides in the duplex position, drives the installation cast iron pipe hole that grinding pin treated processing of beating above that by the motor and carry out two -way polishing, adjusts the device automatically well and install and enter the anterior both sides of tub track at the polisher, drives adjusting well of its completion cast iron pipe through the cylinder, prevent scurrying the device and fix the support both ends at trusteeship rotary part for control is at the axial drunkenness of in -process cast iron pipe of polishing. The utility model discloses can stretch out its hole to the cast iron pipe on two stations from both ends simultaneously and polish, effectiv