Engine cylinder hole honing driving head device

The invention discloses an engine cylinder hole honing driving head device. The engine cylinder hole honing driving head device comprises a driving shaft, an end cover, a distributor and a cutter rod;the lower part of the end cover is arranged on the upper part of the distributor in a sleeving manner; the driving shaft is sleeved with a front bearing and a rear bearing; the front bearing is located between the upper part of the distributor and the driving shaft; the rear bearing is located between the lower part of the distributor and the driving shaft; a first framework seal and a second framework seal are arranged between the driving shaft and the middle part of the distributor from top down; a sealing cavity is defined by the distributor, the first framework seal, the second frameworkseal and the driving shaft; compressed air and lubrication oil are arranged in the sealing cavity in a flow adjustable manner; the distributor is vertically-slidably connected; the cutter rod sleevesand is rotatably connected