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现阶段,工厂在普通车床上加工细长轴时一般采用跟刀架。如果工件超细过长,直径小,加工时跟刀架就难以调整,以致辅助时间多,并且至少要吃三刀以上。分析了现行加工方法中存在的弊端,我们在实践中自行设计、制造了双刃切削引导刀体。加工超细长轴(直径φ5～φ10,长度300～800mm,细长比达1:60～1:80)时,不需要顶尖装置,能一次加工成形,质量符合二级精度要求。在大批量生产细长轴的单位中,对提高生产效率,有一定的推广意义。下面举例说明φ5×300mm细长轴的加工方法 (1)取45号钢棒校直,去应力; (2)先加工一只φ5_0~(+0.02)的引导套,放进夹具刀体的引导套座孔内;
At this stage, the factory in the ordinary lathe slender shaft generally used with the knife holder. If the workpiece is too long and too small, the diameter is small, it is difficult to adjust the turret with the processing, resulting in more auxiliary time, and at least eat more than three knives. The disadvantages of the current processing methods were analyzed. In practice, we designed and manufactured a dual-edge cutting guide body. The processing of ultra-thin long axis (diameter φ5 ~ φ10, length 300 ~ 800mm, slenderness ratio of 1:60 ~ 1:80), do not need the top device, can be processed once formed, the quality meets the two precision requirements. In the mass production of slender shaft units, to improve production efficiency, there is a certain promotion. The following example illustrates the φ5 × 300mm slender shaft processing methods (1) take 45 steel bar straightening, to stress; (2) first processing a φ5_0 ~ (+0.02) guide sleeve, into the fixture guide Sleeve hole;