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Adjustable type electromagnetic damping vibration absorption boring bar

A technology of electromagnetic damping and electromagnetic damper, which is applied to boring bars and other directions, can solve the problems of difficult and complicated manufacturing, and the structure of vibration-absorbing boring bars is easy to fail, and achieves the effect of simple structure.

Inactive Publication Date: 2018-12-04
HARBIN UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0005] The present invention proposes an adjustable electromagnetic damping damping boring bar in order to solve the existing damper-based damping boring bars that are prone to failure or complex in structure and difficult to manufacture

Method used

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  • Adjustable type electromagnetic damping vibration absorption boring bar
  • Adjustable type electromagnetic damping vibration absorption boring bar
  • Adjustable type electromagnetic damping vibration absorption boring bar

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Embodiment

[0039] Embodiment: combine below Figure 1 to Figure 6 This embodiment will be described in detail.

[0040] The adjustable electromagnetic damping and damping boring bar described in this embodiment includes a rod body 1, and a cutter head 2 is arranged at the front end of the rod body 1, and the cutter head 2 is used for clamping a boring tool 3;

[0041] The damping boring bar also includes a main controller, an excitation current source and an electromagnetic damper;

[0042] The master controller pre-stores the corresponding relationship table between the combination of process parameters and the optimal excitation current. Each combination of process parameters includes the rotational speed, feed rate, back engagement, workpiece material and geometric parameters of the boring tool;

[0043] The electromagnetic damper can minimize the radial vibration of the rod body 1 under the corresponding process parameter combination under the excitation of the optimal excitation cu...

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Abstract

The invention discloses an adjustable type electromagnetic damping vibration absorption boring bar, and belongs to the field of mechanical machining. The problems that an existing vibration absorptionboring bar based on a damping device is prone to failing, or complex in structure and large in manufacturing difficulty are solved. The vibration absorption boring bar is characterized in that corresponding relation tables of process parameter combinations and optimal exciting current are preset in a master controller, each process parameter combination comprises rotating speed, the feeding amount, the back cutting depth amount, the workpiece material and boring cutter geometric parameters, the electromagnetic damping device is motivated by the optimal exciting current to enable the radial vibration of a bar body under the corresponding process parameter combination to be minimum, and the master controller searches the process parameter combination closest to the input actual process parameter combination and the corresponding optimal exciting current from the corresponding relation table before the vibration absorption boring bar is used for boring and machining, the master controller is further used for controlling an excitation current source to carry out excitation on an electromagnetic damping device when the vibration absorption boring bar is used for boring, and the electromagnetic damping device is motivated by the optimal exciting current to carry out vibration absorption on the bar body.

Description

technical field [0001] The invention relates to a vibration-damping boring bar, which belongs to the field of mechanical processing. Background technique [0002] The dampers used in existing damper-based damping boring bars are mainly divided into squeeze film dampers, electrorheological fluid dampers and magnetorheological fluid dampers. However, these damped boring bars mainly have the following problems: [0003] For the vibration-damping boring bar based on the squeeze film damper: when the actual unbalance of the rotor of the squeeze film damper exceeds its critical unbalance, the rotor will experience asynchronous whirl and exhibit bistable characteristics, which will lead to squeeze The pressure oil film damper fails, and even aggravates the vibration of the boring bar. [0004] For damped boring bars based on ER fluid dampers and actively damped boring bars based on MR fluid dampers: Electrorheological fluid dampers for electrorheological fluid dampers and magneto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B29/02
CPCB23B29/022
Inventor 刘献礼杨浩刘强
Owner HARBIN UNIV OF SCI & TECH
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