Dynamic vibration attenuation boring tool

Abstract

The invention discloses a dynamic vibration attenuation boring tool which comprises a tool bit, a tool bar, a tool bit end cover, a connection rod and a tool tail end cover, wherein the connection rod is arranged in the tool bar; two ends of the connection rod are respectively connected with the tool bit end cover and the tool tail end cover; the tool bit end cover is also connected with the tool bar; the tool bit is arranged on the tool bit end cover; the tool tail end cover is connected with the inner wall of the tool bar through an O-shaped ring; at least two vibration attenuation modules are arranged on the connection rod, and are axially fixed on the connection rod through clamping springs; the vibration attenuation modules comprise vibration cores, damping oil and rubber rings; the vibration cores are suspended on the connection rod through the rubber rings; and the damping oil is filled between the vibration cores and the connection rod. According to the dynamic vibration attenuation boring tool, the diameters of the vibration cores of different vibration attenuation modules are different, so that differentiated vibration attenuation can be performed on different positions of the tool bar, vibration generated during part machining can be attenuated, and the quality of a machined surface is improved.

Description

technical field [0001] The invention relates to a cutting tool, in particular to a dynamic damping boring tool for hole processing, and belongs to the technical field of metal cutting. Background technique [0002] In machining, hole machining is usually performed by boring tools. During machining, the boring tool and the workpiece periodically cut in and out, causing the boring bar to vibrate. Especially when the gear rod has a large length-diameter ratio, the gear rod has low stiffness and severe vibration, so that the roughness of the processed surface cannot meet the requirements, which affects the processing quality of the hole. Most of the current dynamic vibration reduction methods are to add an equal-diameter vibration core in the body of the boring bar for dynamic vibration reduction. Such a vibration reduction method can only reduce the vibration at a certain fixed position of the tool bar. During cutting, since the boring tool is a cantilever structure, the clos...

AI Technical Summary

Problems solved by technology

Especially when the gear rod has a large length-to-diameter ratio, the gear rod has low stiffness and severe vibration, so that the roughness of the processed surface cannot meet the requirements, which affects the processing quality of the hole

Most of the current dynamic vibration reduction methods are to add an equal-diameter vibration core in the body of the boring bar for dynamic vibration reduction. Such a vibration reduction method can only reduce the vibration at a certain fixed position of the tool bar. During cutting, since the boring tool is a cantilever structure, the closer to the tool head, the greater the vibration amplitude, and the greater the mass of the vibration core is required for dynamic vibration reduction. The current vibration reduction method cannot account for the different vibration amplitudes at different positions of the tool bar. differentiated vibration reduction

Images