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双刃镗刀与单刃镗刀相比有以下优点:(1)在结构上,两把镗刀相对镗杆轴心线成对称布置,故不会产生多大的不平衡。(2)在切削过程中,两镗刀本身会形成径向支撑,作用于刀具上的径向切削力,在很大程度上相互抵消,故镗削时稳定性较好。这特别有利于镗削深孔。(3)如将其中一把镗刀在径向上稍向里移动,则可以在一次走刀下,实现半精镗和精镗工序。
Double-edged boring tool compared with the single-edge boring tool has the following advantages: (1) In the structure, the two boring tools symmetrical to the boring bar axis symmetrical arrangement, it does not produce much imbalance. (2) In the cutting process, the two boring tools themselves will form a radial support, the radial cutting force acting on the tool largely offset each other, so the stability when boring is better. This is particularly beneficial for boring deep holes. (3) If one of the boring tools is slightly moved in the radial direction, the semi-fine boring and fine boring operations can be realized under one pass.