Method for reducing self-excited vibration of deep-hole processing boring bar and power vibration damping boring bar thereof

A technology of self-excited vibration and dynamic vibration reduction, applied in the direction of boring bars, etc., can solve the problems of verification, no design of boring bars, processing, etc., and achieve the effect of improving quality, simple structure, and suppressing vibration
CN101758253AInactive Publication Date: 2010-06-30CHENGDU AIRCRAFT INDUSTRY GROUP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDU AIRCRAFT INDUSTRY GROUP
Publication Date
2010-06-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for reducing the self-excited vibration of a deep-hole processing boring bar, a vibration damper designed by utilizing the method for selecting parameters of the vibration damper has the advantages of simple structure and convenient detachment and can modify the parameters of the vibration damper of a power vibration damping boring cutter according to the needs at any time, the vibration damper consists of a vibration damping rod, damping fluid and rubber rings, and the vibration damper can effectively suppress the vibration during the processing. The method is realized through the following technical scheme: (1) establishing a theoretical model of a power vibration damping boring bar; (2) establishing a simulation model on the basis of the theoretical model and selecting the parameters of the vibration damper; (3) selecting finite element analysis software ANSYS and multi-body dynamics simulation software ADAMS for jointly establishing a dynamics simulation model of a vibration damping system and constituting a rigid-flexible coupling model; (4) designing a physical vibration damping boring bar model according to the models; and (5) selecting the vibration damping rod; and using the vibration damping rod with sheathed rubber rings at two ends and a boring bar inner hole for constituting the vibration damper, wherein the boring bar inner hole is arranged deep at one end and sealed by a plug, and the damping fluid is filled in the inner cavity of the boring bar inner hole.
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Description

technical field

[0001] The invention relates to a method for reducing the self-excited vibration of a boring bar for deep hole processing, especially a method for reducing the self-excited vibration of a boring bar for small-diameter deep hole processing. The invention also relates to a dynamic vibration-absorbing boring bar manufactured using the method. Background technique

[0002] Deep hole machining is a recognized technical problem in the field of metal cutting, and sometimes product performance has to be sacrificed to meet the processing technology requirements. The bottle cavity at the bottom of the deep hole is more difficult to process. The workpiece with the deep hole bottle cavity structure as shown in Figure 6 further restricts the diameter of the boring bar and the structure is further restricted. During the boring process of the hole, the boring bar with the aspect ratio less than 4 will not produce vibration when machining the workpiece. When the length-to-d...

Claims

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