在此刨刀出现之前,哈滨尔四海机械厂在加工大面积工件时,采用宽刃精刨刀。由于刀具磨损严重,使加工表面光洁度前后不一致,难以达到▽▽▽7以上。另外,宽刃精刨刀刃磨及对刀要求严格,这样加工大面积工件,就成一个生产技术上的关键。特别是加工低碳钢,困难更多。为了突破这一关 Prior to the emergence of this planing knife, Hahnery Sihai Machinery Works in the processing of large area workpiece, the use of wide blade precision planing knife. As the tool wear and tear, so that the machined surface finish before and after the inconsistency, it is difficult to achieve ▽ ▽ ▽ more than 7. In addition, wide blade fine sharpening Sharpening and strict requirements on the knife, so processing a large area of ​​the workpiece, it becomes a key production technology. In particular, the processing of low-carbon steel, more difficult. In order to break this level