A special tool holder for deep and long hole circular inner groove boring
A special tool holder, deep and long hole technology, applied in the direction of the boring bar, etc., can solve the problems of poor axial dimension accuracy, aggravated tool wear, large cutting force, etc., to reduce cylindricity error, reduce force deformation, and improve machining The effect of precision
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[0042] Such as figure 1 It is a schematic diagram of the longitudinal section of the segmented special boring bar for deep hole annular inner groove boring with guiding double supports of the present invention. It is mainly suitable for the boring process of small diameter deep long holes and deep long hole annular grooves. The length-to-diameter ratio of the boring bar is 17:1, and the diameter of the main body of the tool bar is 21mm. The boring bar is composed of a guide part, a cutter head part, a tool advance and retreat control part, an axial positioning part, an auxiliary support part and a rod body part. The guide part and the auxiliary support part provide support for the cutter head part, reducing stress deformation at the cutter head. The rear mandrel in the body section is made of a material with a high modulus of elasticity, which further increases the overall rigidity of the shank. The cutter head part is provided with three uniformly arranged blades, most of t...
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