REGENERATING METHOD OF CUTTING BLADE, ITS REGENERATING EQUIPMENT, AND CUTTING BLADE FOR SHEARING TYPE GRINDING MACHINE

摘要

A regenerating method of a cutting blade to be repaired includes a chamfering step of chamfering the leading edge part and the side edge parts of a cutting blade, 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 build-up welding portions of the cutting blade into a specified shape of leading edge part and side edge parts, and of the side build-up welding portions formed on the side edge part, dimension L1 of a lateral build-up weld zone is 1 to 3 times of dimension L2 of an outer build-up weld zone.

主权项

1. A regenerating method of a cutting blade to be repaired, having a fixed part, and a blade tip projecting outward from this fixed part, the blade tip having a leading edge part pointed toward a rotational direction, and having side edge parts at the side outer edge including the blade tip, comprising:
a chamfering step of chamfering the leading edge part and the side edge parts of the cutting blade, 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 build-up welding portions of the cutting blade into a specified shape of leading edge part and side edge parts, in which of the side build-up welding portions formed on the side edge parts, a lateral build-up weld zone extending on the lateral side of the cutting blade is specified in the dimension in a vertical direction on the outer circumference of the main body, from the outer circumference of the main body of the cutting blade, by 1 to 3 times of the dimension in thickness direction of the cutting blade, in an outer build-up weld zone extending on the outer circumference of the cutting blade.