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Vibration reduction boring bar with adjustable rigidity and damping and control method

An adjustable and boring bar technology, applied in the direction of boring bars, can solve the problems of boring bar vibration control, etc., to achieve the effect of reducing vibration, improving cutting efficiency, and strengthening its own functions

Active Publication Date: 2021-12-21
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of vibration control of the boring bar, and propose a damping boring bar with adjustable stiffness and damping and its control method

Method used

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  • Vibration reduction boring bar with adjustable rigidity and damping and control method
  • Vibration reduction boring bar with adjustable rigidity and damping and control method
  • Vibration reduction boring bar with adjustable rigidity and damping and control method

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specific Embodiment approach 1

[0027] Specific implementation mode one: the following combination Figure 1~5 Describe this embodiment, the vibration-damping boring bar with adjustable stiffness and damping described in this embodiment includes a boring bar 6, a cutter head connector 2, a cantilever beam 3, a mass block 4, an iron block 5 and an electromagnet 7,

[0028] The boring bar 6 is provided with a front-end opening cavity, the front opening of the cavity is provided with a cutter head connector 2, the cutter head connector 2 is used to install the cutter head 1, and the fixed end of the cantilever beam 3 is arranged on the cutter head connector 2 At the center point of the inner wall, the mass block 4 is cylindrical with a central through hole, the left end of the mass block 4 is sleeved on the free end of the cantilever beam 3, and can move axially along the cantilever beam 3, and the right end of the mass block 4 is provided with an iron block 5,

[0029] The electromagnet 7 and the iron block 5 ...

specific Embodiment approach 2

[0039] Specific implementation mode two: the following combination Figure 1~4 Describe this embodiment, this embodiment is a method for adjusting the stiffness of a boring bar, which is realized based on the vibration-damping boring bar with adjustable stiffness and damping described in Embodiment 1. The method is as follows:

[0040] S1, the mass block locking unit 12 releases the cantilever beam 3, and the electromagnet 7 is powered off;

[0041] S2, the stepper motor 11 works, pushes the slider 9 to move to the left, and drives the electromagnet 7 to move to the left through the telescopic rod 8;

[0042] S3, move further to the left after the electromagnet 7 collides with the iron block 5 and presses against it, until the mass block 4 moves to the point where it can no longer move;

[0043] S4, the electromagnet 7 is energized, and the adsorption iron block 5 drives the mass block 4 to move to the right until a predetermined position, and the predetermined position is a ...

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Abstract

The invention discloses a vibration reduction boring bar with adjustable rigidity and damping and a control method, belongs to the technical field of metal cutting machining, and aims to solve the problem about boring bar vibration control. The vibration reduction boring bar comprises a boring bar body, a tool bit connecting piece, a cantilever beam, a mass block, an iron block and an electromagnet, the boring bar body is provided with a cavity with an opening in the front end, the tool bit connecting piece is arranged at the opening in the front end of the cavity, the fixed end of the cantilever beam is arranged at the center point of the inner wall of the tool bit connecting piece, and the mass block is a cylinder with a center through hole; and the left end of the mass block is arranged at the suspended end of the cantilever beam in a sleeving mode and can move in the axial direction of the cantilever beam, the iron block is arranged on the right end face of the mass block, the electromagnet and the iron block are coaxially and oppositely arranged, an axial gap exists between the electromagnet and the iron block, attraction force is generated between the electromagnet and the iron block after the electromagnet is powered on, then damping vibration reduction is achieved, and damping is adjusted by controlling voltage values at the two ends of the electromagnet.

Description

technical field [0001] The invention relates to a boring bar vibration reduction technology, which belongs to the technical field of metal cutting. Background technique [0002] In metal cutting processing, inner hole processing accounts for about 33% of the total processing. Before the 20th century, ultra-deep hole processing technology was mostly used in the confidential military industry, and it was famous in the entire manufacturing industry for its difficult processing and high processing cost. After entering the 21st century, with the rapid development of science and technology, ultra-deep hole parts have been widely used in military and civilian fields, most of which involve major fields such as military industry, aerospace, and energy equipment that are related to national defense and people's livelihood. [0003] Boring bars are widely used in deep hole machining. However, due to the low stiffness of the cantilever beam structure of the boring bar, vibrations ofte...

Claims

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Application Information

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IPC IPC(8): B23B29/02
CPCB23B29/022Y02P70/10
Inventor 刘强周强马晶韩伟李定坤范吉庆
Owner HARBIN UNIV OF SCI & TECH