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首页> 外文期刊>Cutting Tool Engineering >Parting know-how: understanding parting-off operations
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Parting know-how: understanding parting-off operations

机译：离别知识：了解离别操作

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The purpose of a molded-style chip-former is twofold. First, it curls and breaks the cut material into manageable chips. Second, and equally important, the chip-former reduces the width of the chip to make it narrower than the groove being cut. A chip that is not narrowed will score the side walls of the part, leading to an unacceptable surface finish. Furthermore, a flat chip whose width isn't reduced tends to break off in the groove and damage the cutting edge as it continues cutting. Cut material that's not broken into manageable chips can lead to the creation of long, stringy chips. They can wrap around parts or interfere with subsequent operations. This often leads to downtime while the operator halts production to clear the machine. Figure 1 depicts three types of chips. The types of carbide insert chipformers used most often for parting off can be divided into two main categories: negative cutting edge chipformers and positive cutting edge chipformers (Figures 2, 2a).
机译：模压式切屑成型机的目的是双重的。首先，它将卷曲的材料切成碎片，并切成易于处理的碎片。其次，同样重要的是，切屑形成器减小了切屑的宽度，使其比要切割的凹槽更窄。未变窄的切屑会划伤零件的侧壁，从而导致不可接受的表面光洁度。此外，宽度不减小的扁平切屑在继续切削时往往会在凹槽中折断并损坏切削刃。未切成易碎屑的切屑会导致产生长而细的切屑。它们会缠绕零件或干扰后续操作。这通常会导致停机，而操作员会暂停生产以清理机器。图1描绘了三种类型的芯片。最常用于切断的硬质合金刀片切屑成型机的类型可分为两大类：负切削刃成型机和正切削刃成型机（图2、2a）。

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