转子外圆坚硬,车刀特别容易损坏。过去一把刀子只能加工4～5个转子就损坏了。对此,我们“推优”小组经过仔细分析,认为车刀易坏的主要矛盾是刀子前角不对。当前角在-10°时刀子易烧坏;前角在-30°时,阻力大,易折刀。于是,我们采用“对折法”在-10°至-30°之间进行优 Rotor cylindrical hard, particularly vulnerable to damage turning tools. In the past a knife can only be processed 4 to 5 rotor damage. In this regard, we “push excellent” team after careful analysis, that the main contradiction between the turning tool is the knife rake angle wrong. When the current angle at -10 ° when the knife is easy to burn; rake at -30 °, the resistance, easy knife. So, we use the “fold method” in between -10 ° to -30 ° for excellence