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大型车床的切断刀,由于承受的切削力大,切断截面大,排屑困难,工作条件十分恶劣,同时,由于刀具伸人工件被切的槽子里,周围被工件和切屑所包围,属半封闭容屑空间,散热条件极差,刀刃容易磨损。极易造成扎刀现象、刀片碎裂,大量焊接切断刀具报废,浪费大量资金。为此,我厂将焊接切断刀改为机夹切断刀,效果很好。我厂机夹重型切断刀具基本分为两类:一是用于C650切断φ200～400毫米的硬质合金切断刀(图1);一是用于大型卧车切断φ400～600毫米的高
Large lathe cutting knife, due to the cutting force, cutting section, chip evacuation, the working conditions are very poor, at the same time, as the tool extends into the workpiece is cut in the groove, surrounded by the workpiece and the chip is enclosed, semi-enclosed Chip space, poor cooling conditions, the blade easy to wear. Can easily lead to the phenomenon of blade, blade fragmentation, a large number of welding cut off the tool scrapped, waste a lot of money. To this end, I plant the welding cutting knife into a folder cut knife, the effect is very good. I plant machine folder heavy cut off the tool is basically divided into two categories: one for the C650 cutting φ200 ~ 400 mm carbide cutting knife (Figure 1); one for the large bed cut off φ400 ~ 600 mm high