PURPOSE: To facititate repeating of the cut edge rotation and the accurate adjustment of the annular saw blade by a method wherein the rotation in the radius direction of the cut edge is measured as an function of the position and the saw blade is extended as a function of the position responsive to the deviation caused by the tensile el-ement, this process being repeated until the deviation in the direction of radius of the cut edge meets the logic value.

CONSTITUTION: The radius value to be measured by a measuring device 4 during the rotation of a saw blade and the position value to be measured via the rotation angle of a positioning motor 2 should be correlated and said values are stored. After initially adjusting the actual operation of the cut edge to the predetermined range of approx. 0.03 mm, a step for the tensile operation is carried out. A tension is applied to said blade via all tensile screws 11 and the actual operation of the cut edge is then measured and stored as a function of the position. The tension strength of the saw blade is intensified by controlling the tensile screw 11. The saw blade is pulled outward within the region where the hole radius is smaller than the maximum measured value of which results are measured as a function of the position. Additionally, the correction measurement cycles are repeated until the desired value becomes within the allowable range of 0.01 mm.