No. Heisei 8-99123. That is to say, the cutting blade is bent leftward or rightward in conformity with a size of a desired configuration under the control of a computer program. Concretely speaking, by finely moving in a controlled manner a movable bending member which is positioned at a distal end of a guide member, the cutting blade which is discharged in a fitted state by the guide member is properly bent.
However, in the Japanese Patent Laid-open Publication Gazette, when implementing the cutting blade fabricating procedure, for example, when it is necessary to bend the cutting blade at the right angle, over an area where the bending of the cutting blade takes place, since a compression stress is produced in an inner part of the cutting blade andis generated to cause degradation of the bite.
Specifically, when defining the groove using the grinder or bite, since there is not provided a separate structure for supporting a machining area of the cutting blade, a bending phenomenon occurs in the cutting blade, whereby it is difficult to precisely define the groove in the cutting blade.
In Korean Patent No. 239943, there is disclosed an apparatus in which arc-shaped grooves for enabling bending of a cutting blade are defined on upper and lower surfaces of the cutting blade using grinding rolls which are rotated about a horizontal shaft.
In this apparatus, while the grinding rolls having a minimum length corresponding to a width of the cutting blade press the upper and lower surfaces of the cutting blade to define the bending