Telescopic wheel type polishing tool

The invention discloses a telescopic wheel type polishing tool and aims at being used for improving the accuracy and the efficiency when a robot performs automatic polishing on an aeroengine blade. The telescopic wheel type polishing tool comprises a drive mechanism, a telescoping mechanism and a polishing mechanism; the drive mechanism comprises a base, a hand wheel, a lead screw sliding block, alead screw rod and a connection block; the base is fixed on the ground; a screw rod formed by the lead screw sliding block and a lead screw rod is connected to the base through a bearing; the hand wheel is fixedly connected with the screw rod in an interference fitting manner; the connection block is fixedly connected to the lead screw sliding block and is engaged with a first stud bolt in the telescoping mechanism through threads; the telescoping mechanism comprises the first stud bolt, an upper end shaft, a spring shock absorber, a second stud bolt and a lower end shaft; the lower end of the lower end shaft is fixe