The invention discloses an angle adjusting device of a
grinding wheel dresser for a guide roller
grinding machine, which relates to the technical field of
grinding wheel dressing and comprises a base, an
equidistant dressing part connected with a movable seat is arranged on one side of a positioning seat, and a
limited angle adjusting part is arranged on the outer side of a turntable. By arranging the
equidistant trimming piece, the distance from
a diamond pen to the circle center of the rotary disc is adjusted by sliding a movable seat on a positioning seat, connection between the movable seat and a hexagonal sleeve is achieved by screwing a second lead screw, a movable
insertion plate is pulled, and a rotary connecting shaft is
clockwise rotated by 180 degrees; the
diamond pen is used for finishing and grinding the edge of the
grinding wheel by rotating the movable seat, and the
diamond pen intermittently moves towards the
grinding wheel by a certain distance by pulling the limiting bolts one by one anticlockwise, so that the situation that the thickness of the edge of the
grinding wheel is large when the
diamond pen is used for finishing the grinding wheel once due to the fact that the movable seat drives the diamond pen to directly finish the grinding wheel is prevented; therefore, the problem of uneven abrasion of the grinding wheel caused by excessive pressure of the diamond pen on the grinding wheel is prevented.