在机床上装好刀具,并把一切加工准备工作做好以后,随着开车、吃刀和走刀,可以看到切屑就唏哩哗啦地由工件上掉下来。但是,“切屑”的形成这一点却往往被人忽视。乍看起来好象很简单,其实不然。过去曾有人把它比做象斧子劈木头,是由于楔子的作用,而把金属劈下来的。后来经过实践、分析、观察,直到19世紀才证明以上的说法是错误的。那么,“切屑”究竟是怎样掉下的呢?为了弄懂这个问题,让我们先举一个生活中常见的例子。如果一个螺旋状弹簧,放在桌子上,当用手指压的时候,会看到它的高度将缩短,而手指一离开弹簧,弹簧又重新恢复原有高度,这种现象 After the tool is installed on the machine and everything is ready for machining, you can see the chips falling from the workpiece as you drive, eat and walk. However, the formation of “chip ” is often overlooked. At first glance it may seem simple, but it is not. In the past some people used to split wood like an ax instead of splitting the metal because of the wedges. After practice, analysis, observation, until the 19th century proved that the above statement is wrong. So, what exactly is “cuttings”? In order to understand this problem, let us first give a common example of life. If a helical spring is placed on the table, when it is pressed by a finger, it will see its height will be shortened, and as soon as the finger leaves the spring, the spring will regain its original height