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环槽铆钉具有强度高、铆接质量好、无铆接噪音、铆接效率高等优点,故在飞机上逐步被采用。我们原来用样板刀车削铆钉的环槽和断颈槽,加工一个约需三分钟,而且质量也不太好。现在在自制的“自动冷挤压滚轧铆钉机”上加工铆钉的环槽和断颈槽,工效提高400倍(每分钟可加工140个),而且质量好。自动冷挤压滚轧铆钉机的结构原理(见图1)很简单,即利用蜗杆带动蜗轮作圆周运动,在蜗轮轴上装有圆盘滚刀亦作圆周运动,并带动铆钉在月型面刀和圆盘滚刀之间作圆周运动,在型面上滚轧100°的弧
Ring groove rivets with high strength, riveting quality, no riveting noise, high riveting efficiency, it is gradually being adopted on the plane. We used the prototype knife turning rivets ring groove and broken neck slot, processing a about three minutes, and the quality is not very good. Now in the self-made “automatic cold extrusion rolling riveting machine” Riveting ring groove and broken neck groove, work efficiency increased 400 times (140 per minute processing), and good quality. Automatic cold extrusion rolling riveting machine structure principle (see Figure 1) is very simple, that is, the worm driven by the worm for circular motion, mounted on the worm shaft disc cutter also for circular motion, and drive rivets in the moon-shaped knife And disc cutter circular motion between the rolling surface in the 100 ° arc