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我厂在加工图1零件时,由于不锈钢(1 Cr 18 Ni 9 Ti)韧性大,高温强度高,切屑不容易被切离,而且粘附性强,导热系数低。成形车刀工作刃宽,加工时易产生振动和加工硬化。影响了加工质量,甚至造成崩刃和损坏工具。为此,我们进行了多次改进,取得较好效果。几何参数的选择: 为了使切削轻快,减少切屑与前面的摩擦,减少切削力P_y及加工硬化层深度,抑制积屑瘤产生,应尽量采用较大的前角。另外,当成形车刀刀刃上
I plant in the processing of Figure 1 parts, due to stainless steel (1 Cr 18 Ni 9 Ti) toughness, high temperature strength, the chip is not easy to be cut off, and strong adhesion, low thermal conductivity. Forming lathe work blade width, easy to produce vibration and work hardening. Affect the processing quality, and even cause chipping and damage to tools. To this end, we have made many improvements and achieved good results. Geometric parameters of choice: In order to make cutting light, reduce the friction between the chip and the front, reducing the cutting force P_y and depth of work hardening layer, inhibit the build-up of BEC, should try to use a larger rake angle. In addition, when forming the lathe blade