Variable-diameter reaming centralizer

Abstract

The invention discloses a variable-diameter reaming centralizer. The variable-diameter reaming centralizer comprises a first shell, a second shell, a centralizing block, a centralizer inner pipe and adiameter adjusting nut, wherein the first shell is connected with the second shell; the centralizer inner pipe is connected in the first shell; the centralizing block penetrates through the side wallof the first shell to be connected with the centralizer inner pipe through a dovetail structure; the dovetail structure comprises a dovetail groove and a dovetail tenon; the dovetail groove is arranged on the centralizer inner pipe; the plane where the bottom surface of the dovetail groove is located intersects with the axis of the centralizer; the projection of the axis of the centralizer on theplane where the bottom surface of the dovetail groove is located is parallel to the length direction of the dovetail groove; the diameter adjusting nut is in threaded connection with the centralizerinner pipe and arranged between the first shell and the second shell; and the two end faces of the diameter adjusting nut are respectively attached to one end face of the first shell and one end faceof the second shell. According to the variable-diameter reaming centralizer, the machining level of a deep and long inner hole can be improved, the machining quality and the reaming efficiency can beimproved, and the operation is simple.

Description

technical field [0001] The invention belongs to the field of centralizers, in particular to a centralizer with variable-diameter hinge reaming. Background technique [0002] In the process of mechanical processing, the processing of the inner hole of deep and long pipe fittings is a difficult problem to solve. When processing the inner hole, it is often difficult to ensure the processing quality so that it can meet the technical requirements, especially when the precision requirement is relatively high and the inner hole depth is large. Processing is more difficult. The main reason for this phenomenon is that when the tool is machining the inner hole of the pipe, as the machining depth of the tool increases, the length of the drive shaft of the tool will also increase accordingly. The work of the tool is powered by the drive shaft. The increase in length will inevitably lead to the offset between the centerline of the drive shaft and the centerline of the pipe fitting in th...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing centralizers are of the non-variable diameter type, and the processing of each aperture requires a corresponding centralizer, which brings inconvenience to the processing, especially when processing non-standard parts.

Images