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由于紫铜材料质软、塑性大及导热性好等原因,所以比较难以加工。尤其是在切断过程中,如刀具前角选择不当,容易产生切削瘤、排屑不顺和使刀片折断等情况,或者切屑会严重破坏已加工表面,降低表面光洁度。这里介绍的紫铜分屑切断刀,其主要特点是控制切屑的流向,使切屑不与已加工表面摩擦,让切削热随着切屑迅速离开切削区,而获得较平整和光洁的加工面。刀具结构分屑切断刀的结构如图1所示,由刀体1,主刀片2和副刀片3组成。利用刀架上螺钉压紧刀体,刀片被夹紧在刀体的刀槽中,并可按工件直径和切断深度伸缩刀片。刃磨时,松开刀架螺钉,取出主、副刀
As the copper material is soft, large plasticity and good thermal conductivity and other reasons, it is more difficult to process. Especially in the cutting process, such as improper choice of tool rake, easy to produce cutting tumor, chip removal and blade breakage, etc., or the chip will seriously damage the machined surface and reduce the surface finish. The introduction of the copper swarf cutting knife, its main feature is to control the flow of chips so that the chip does not rub the surface has been processed, so that cutting heat quickly leave the cutting area with the chip, and get a more smooth and smooth surface. The structure of the cutter structure chip breaking knife as shown in Figure 1, the cutter body 1, the main blade 2 and the sub-blade 3 composition. The knife body is fastened by a screw on the knife holder, the knife blade is clamped in the knife groove of the knife body, and the blade can be retracted according to the workpiece diameter and the cutting depth. Sharpening, loosen the turret screw, remove the main, vice knife