Special cutter bar for boring inner annular grooves of deep-long holes
A special tool holder, deep and long hole technology, applied in boring bars and other directions, can solve the problems of poor axial dimensional accuracy, aggravated tool wear, large cutting force, etc., to reduce cylindricity error, improve local rigidity, and improve tool holder The effect of stiffness
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[0042] Such as figure 1 It is the longitudinal sectional structure diagram of the segmented deep hole annular inner groove boring special boring bar with guiding and double support of the present invention. It is mainly suitable for boring deep long holes with small diameters and deep long hole annular inner grooves. The length to diameter ratio of the boring bar is 17:1, and the main body diameter of the tool bar is 21mm. The boring bar is composed of a guide part, a tool head part, a tool advance and retreat control part, an axial positioning part, an auxiliary support part and a rod body part. The guiding part and the auxiliary supporting part provide support for the cutter head, reducing the force deformation at the cutter head. The rear core rod in the rod body part is made of a material with a high elastic modulus, which can further improve the overall rigidity of the cutter rod. The cutter head part is provided with three uniformly arranged blades, most ...
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