| 摘要 |
A regenerating method of a cutting blade to be repaired includes a grouping step of dividing the cutting blade differing in the degree of abrasion of the leading end part and side edge parts, into groups A to E depending on the degree of abrasion, a chamfering step of chamfering the leading edge part and the side edge parts of the cutting blade belonging to groups A to D, to positions passing reference lines K1, K2, - - - , K4 built up to a specified height determined in each group, a build-up welding step of welding a build-up on the chamfered leading edge part and side edge parts, and a processing step of regenerating and processing the build-up welding portions of the cutting blade into a specified shape of leading edge part and side edge parts.
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