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图示单刃镗刀的新结构(苏联作者发明征1093410),由于使用连续补偿切削部分磨损的方法,因而在难加工的材料上精细镗削深孔时,不但能提高镗孔的精度(如尺寸精度和锥度)和生产率,并且还能增加刀具工作时的稳定性,避免镗孔时经常出现的卡刀现象。该刀具在本体1的刀槽2内配置着扇形浮动镗刀片3,在其内设置有切削元件(切削部分)6和支承元件4与5。支承元件相对于切削元件的回转角应小于180°。刀体上还配置有导向元件7和8,用以承受切削过程中产生的切向和径向切削力。为了连续补偿切削部分的磨损,使切剖部分所形成的刃口同导向与支承元件和
The new structure of the single-blade boring tool (the Soviet author’s signature 1093410), due to the use of continuous compensation for cutting part of the wear and tear, so difficult to process the material fine boring deep hole, not only can improve the accuracy of boring (such as Dimensional accuracy and taper) and productivity, but also to increase the stability of the tool work, to avoid the phenomenon of frequent card bore when boring. The tool is provided with a sector-shaped floating boring blade 3 in the sipe 2 of the body 1, in which a cutting element (cutting portion) 6 and support elements 4 and 5 are arranged. The angle of rotation of the support element relative to the cutting element should be less than 180 °. The knife body is also provided with guide elements 7 and 8 for supporting the tangential and radial cutting forces generated during cutting. In order to continuously compensate for the wear of the cutting portion, the cutting edge formed by the cut portion is brought into contact with the guide and support member and