The invention relates to a centrifugal
barrel rotation coaxiality detection mechanism, which comprises a positioning frame, wherein the top of the positioning frame is connected with a rotating sleevethrough a rotary support mechanism; the rotary supporting mechanism comprises a supporting inner ring coaxially and fixedly connected to the outer wall of a rotary sleeve, a plurality of annular inlaying grooves are formed in the supporting inner ring in a
linear array mode, two sets of limiting rings are arranged at the top of the positioning frame, the supporting inner ring is located between the limiting rings, and a plurality of supporting pieces are further arranged at the positions, corresponding to the positions between the limiting rings, of the inner wall of the positioning frame ina
linear array mode and embedded into the inlaying grooves; a clamping mechanism, which comprises a plurality of pressing rods which are arranged on the inner wall of the rotary sleeve in an
annular array manner; a deflection detecting mechanism, which comprises a floating ring rotationally connected to the outer wall of the rotary sleeve, wherein an indicating mechanism comprises a sliding sleeveperpendicularly connected to the side wall of the positioning frame, a push rod is slidably connected into the sliding sleeve, a relaxation spring is arranged at the
tail end of the sliding sleeve, and a displacement sensor is further connected between the
tail end of the sliding sleeve and the push rod.