External chip removal deep hole drill with deviation prevention function

Abstract

The invention belongs to the technical field of deep hole machining in the mechanical industry, in particular to an outer chip removal deep hole drill with anti-deflection function. The problems thatthe cutting tool is fine and long, the bending deformation is generated due to small rigidity, and the correct position is deviated can be solved; the hole drill comprises a cutting portion and a cutter bar portion; a V-shaped groove, a concave mark, a wedge-shaped bulge and a rectangular bulge are machined on the outer surface of the knife rod part; the concave mark and the wedge-shaped bulge form a wedge-shaped space with the inner surface of the machined deep hole, part of cutting fluid flows from the large end of the wedge-shaped space to the small end of the wedge-shaped space, the pressure of the liquid in the wedge-shaped space is increased, acting force is generated on the cutter rod part, and the resultant force of the acting force is used for counteracting the external force which causes the part of the cutter rod to deform; and contact between the rectangular projection and the inner wall of the deep hole can prevent part deformation of the knife rod. By means of the dynamiccharacteristic of the fluid and the supporting effect of the rectangular projection, the knife rod is prevented from deviating from the correct position, so that the position precision of the straightness of the deep hole and the relative design reference of the deep hole is improved.

Description

technical field [0001] The invention belongs to the technical field of deep hole processing in the machinery industry, and in particular relates to an external chip removal deep hole drill with the function of preventing deflection. Background technique [0002] Deep hole machining is a difficult machining process, and it is inconvenient to observe the cutting tools and cutting parts during the machining process. Because the depth of the hole is large, relatively speaking, the cutting tool system appears thin and long, with low rigidity, and is prone to deflection, resulting in quality problems of the workpiece. It is very important to ensure the quality of deep hole processing to prevent the deformation of the cutting tool and the processing technology system and stabilize it in the correct position. [0003] Deep hole tools include internal chip removal deep hole drills and external chip removal deep hole drills. Internal chip removal deep hole drilling is also called gu...

AI Technical Summary

Problems solved by technology

[0002] Deep hole processing is a difficult machining process, and it is inconvenient to observe the cutting tools and cutting parts during the processing

Because the depth of the hole is large, relatively speaking, the cutting tool system appears thin and long, with low rigidity, and is prone to deflection, resulting in quality problems of the workpiece

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