A Cutting Tool for Machining Right Angle and Obtuse Angle Edge in Shallow Blind Hole

Abstract

The invention discloses a tool for machining right-angle edges and obtuse-angle edges of shallow blind holes. The tool comprises a taper tool bit, a pair of bevel gears, an upper cover and a lower base. The tool is characterized in that the taper tool bit has a taper angle ranging from 68 degrees to 72 degrees and can be simultaneously tangent to three planes which are perpendicular to one another, and the right-angle edges can be machined in a cutting manner at the plane junctions through rotation; when the included angle between two planes is larger than 90 degrees, the obtuse-angle edges can be machined just by making the taper tool bit be tangent to the two planes and performing machining twice; the pair of bevel gears have an included angle ranging from 53 degrees to 57 degrees, and vertical rotation of a milling machine rotary head is changed into rotation at a needed angle; the bevel gears are wrapped and fixed by the upper cover and the lower base, and transmission can be achieved as long as longitudinal shafts on the bevel gears are installed on the milling machine rotary head; and two non-contact side faces of the lower base are provided with sliding tracks used for installing a sliding plate. The tool has the beneficial effects that the machine tool machining process is enriched, shallow square or polygonal blind holes are machined easily, and concerns about the structure are dispelled during design.

Description

technical field [0001] The invention relates to the technical field of machine tool processing, in particular to a cutting tool for processing right-angled and obtuse-angled edges in shallow blind holes, which is suitable for processing right-angled and obtuse-angled edges in relatively shallow blind holes. Background technique [0002] The existing processing methods for the right-angled edge and obtuse-angled edge of the shallower blind hole generally include manual processing, EDM and other more complicated processing methods, because the complexity of processing this structure sometimes leads to avoiding this as much as possible during the design process. If such a situation occurs, sometimes it is necessary to process a through hole first and then add a bottom cover, which will make it difficult to design and process a workpiece with this structure. Contents of the invention [0003] The purpose of the present invention is to solve the problems existing in the prior a...

AI Technical Summary

Problems solved by technology

[0002] The existing processing methods for the right-angled edge and obtuse-angled edge of the shallower blind hole generally include manual processing, EDM and other more complicated processing methods, because the complexity of processing this structure sometimes leads to avoiding this as much as possible during the design process. In this case, if necessary, sometimes it is necessary to process the through hole first and then add the bottom cover, which will make it difficult to design and process the workpiece with this structure.

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