这是一种为了便于更换刀片及调整刀尖位置精度而专门研制的镗杆。其结构特点为,在镗杆1上加工出圆柱孔8,在孔8内的下半部分装入带有槽4的半圆柱状轴2,刀片6就镶在该槽内。上半部分装入夹紧刀片6的压板,在其上带有调整螺栓12,根据加工孔的尺寸,就可以调整并移动刀片6的位置。 This is a boring bar that has been specially developed to facilitate blade replacement and tip position accuracy. Its structure is characterized in that a cylindrical hole 8 is machined in the boring bar 1 and a semi-cylindrical shaft 2 with a groove 4 is fitted in the lower half of the hole 8, in which the insert 6 is inserted. The upper half is fitted with the pressure plate of the clamping blade 6 with the adjusting bolt 12 thereon, which can be adjusted and moved according to the size of the working hole.