TH170D vertical honing machine is a machine tool for honing inner holes in cars, trucks and other automobilecylinders. The utility model has many functions, is easy to use, the operator can get started quickly, and can adapt to any type of operator. The worktable is the most advanced one on the market, which can process the rotating workpiecein the direction of 0-50 “and honing the V-shaped cylinder block. The fastening of the cylinder block is safe andeffcient. The vertical rise and fall of the worktable is controlled by the handwheel. The spindle head can movelongitudinally and horizontally on an air cushion plate and can lock it in any position. The expansion of the honinghead can be adjusted at any time in the process of honing; manual point grinding can be carried out at any positionand the point grinding can also be controlled by stroke bumping.