Deformation-free clamping device for fine boring of conjoined pin wheel housing and application

The invention provides a deformation-free clamping device for fine boring of a conjoined pin wheel housing and application. The device comprises flexible steel supporting body supports fixed to a workbench of a double-face boring machine tool, and flexible steel supporting bodies are locked to the tops of the flexible steel supporting body supports through flexible steel column supporting body fastening screws by means of the flexible steel supporting body supports. Four flexible steel column supporting heads are arranged on the clamping face of each flexible steel supporting body in a centralsymmetry mode, and radial radial telescopic ball head supporting steel columns and axial telescopic ball head supporting steel columns are symmetrically installed at the positions, on the two sides of the vertical center line of the outer contour of the conjoined pin wheel housing, on the flexible steel column supporting heads. Flexible clamps are supported on a cast blank surface which is not machined, and the conjoined