战术助开折刀与自动刀的区别：越死点弹簧机构解析 | Over-Center Spring Mechanism Explained with Benchmade 580 скачать в хорошем качестве

战术助开折刀与自动刀的区别：越死点弹簧机构解析 | Over-Center Spring Mechanism Explained with Benchmade 580

本期视频完整拆解 Benchmade 580 Barrage 折刀，带你看清 助开刀（Assisted Opening）与自动刀（Automatic Knife） 的核心区别： 1. 自动刀解锁后刀刃会直接弹开 2. 助开刀解锁后，需要推动刀刃到达临界角度，才会感受到弹簧力矩完成开启 Benchmade 580 利用 越死点弹簧机构（over-center spring mechanism） 实现这一点：托盘上的缺口让刀刃在临界角度前感受不到弹簧的力，而越过死点后弹簧力矩介入，使刀刃快速开启。 如果你对 折刀内部结构、机构原理、机械力学 感兴趣，或者想搞懂战术助开折刀的工作原理，这期视频非常适合你。 In this video, we take apart the Benchmade 580 Barrage to reveal its internal structure and explain the key difference between assisted opening knives and automatic knives. 1. Automatic knives: the blade opens immediately after unlocking. 2. Assisted opening knives: the blade won’t open until pushed past a critical angle, at which point the spring force takes over and completes the opening. The Benchmade 580 uses an over-center spring mechanism to achieve this. A detent pocket in the pivot tray prevents the spring from applying force before the blade reaches the critical angle, and once the blade passes the “dead center,” the spring engages to rapidly open the blade. This design is similar in principle to a rifle bolt that loses spring tension at a certain position, ensuring safety and controlled motion. If you’re interested in knife mechanics, folding knife engineering, or the working principles behind assisted opening knives, this video is for you.