The invention belongs to the technical field of positioning supports, and relates to a high-precision high-strength carbon
fiber thin-wall
pipe end face connecting structure. The connecting structure comprises a square
pipe, a connecting piece fixed to the side wall of the square
pipe and a connecting pipe fixed to the side of the square pipe through the connecting piece, and at least two
rivet nuts are arranged on the square pipe. The connecting piece is provided with a fixing taper hole, the end, facing the connecting piece, of the connecting pipe is provided with an end face, and the connecting piece is fixed to the end face through a plurality of reverse screws embedded into the fixing taper hole. Counter bores matched with the
rivet nuts are formed in the faces, facing the square pipe, of the connecting piece, and the connecting piece is fixed to the
rivet nuts through forward screws penetrating through the counter bores. According to the connecting structure, the
strength reduction of a punched carbon
fiber thin-walled pipe is compensated through the rivet nuts, and the connecting piece is used for connecting, positioning and fixing, so that the connecting pipe can be accurately and firmly fixed on the side of the square pipe.