UPPER BLADE FOR DOWN-CUT CROP SHEAR

摘要

PROBLEM TO BE SOLVED: To provide an upper blade capable of increasing the cutting performance of an existing down-cut crop shear and easily manufacturable and also provide a method of manufacturing the upper blade.;SOLUTION: To increase the cutting performance, the rake angle of the blade which bites in a material at the beginning of cutting is set larger than the rake angle of the blade which starts to bite in the material after a peak load occurs. The rake angle of the edge of the upper blade in an area used at the beginning of cutting is increased.;COPYRIGHT: (C)2009,JPO&INPIT