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Method for weakening machine tool chatter and machine tool structure

A machine tool and flutter technology, which is applied in the field of machine tool vibration and control, can solve problems such as the limited ability of the machine bed to absorb vibration, and achieve the effect of weakening adverse effects and weakening machine tool chatter

Active Publication Date: 2019-12-10
HUBEI UNIV OF ARTS & SCI +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ability of the marble bed to absorb vibration is limited. In high-speed and high-precision processing occasions, a very weak flutter may have serious consequences.

Method used

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  • Method for weakening machine tool chatter and machine tool structure
  • Method for weakening machine tool chatter and machine tool structure
  • Method for weakening machine tool chatter and machine tool structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0082] A method for weakening chatter of a machine tool, comprising the steps of:

[0083] Step 1: According to the way of energy transmission during the flutter of the machine tool, determine the way the machine tool is implanted with viscoelastic damping material.

[0084] Step 2: Artificial marble can be used as the bed of the machine tool for implanting the viscoelastic damping material in the machine tool, so that the line rails and threaded holes can also be pre-embedded conveniently.

[0085] Step 3: The thickness of the implanted viscoelastic damping material is determined according to the size of the machine tool, and the Poisson's ratio and elastic modulus ratio of the artificial marble bed and the viscoelastic damping material are selected according to the genetic algorithm, and then the loss factor is determined to be maximized . By weight ratio and loss factor diagram, such as image 3 As shown, its specific calculation is as h / d=0.05ρ 1 / ρ 2 Determine the thi...

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Abstract

The invention discloses a machine tool structure for weakening machine tool chatter. A lathe bed is sequentially provided with a first marble layer, a first elastic layer, a second marble layer, a second elastic layer and a third marble layer from top to bottom. The first marble layer, the second marble layer and the third marble layer are all made of artificial marble. The first elastic layer andthe second elastic layer are both made of viscoelastic damping materials. According to the machine tool structure, the manner and thickness of the viscoelastic materials implanted in the lathe bed ofa machine tool are obtained through analysis and calculation, and therefore the adverse effects caused by the chatter of the lathe bed of the machine tool are weakened to the greatest extent.

Description

technical field [0001] The invention relates to a method for weakening machine tool chatter and a machine tool structure, and belongs to the technical field of machine tool vibration and control. Background technique [0002] In CNC machine tools, the material of the bed is generally composed of cast iron with certain strength and rigidity. This kind of structural member has weak absorption of flutter in actual processing and is extremely susceptible to thermal expansion and contraction due to the influence of the environment. In the current situation of unstable international steel prices, machine tool factories are also struggling to purchase cast iron beds. [0003] With the improvement of people's requirements for the machining accuracy of machine tools, artificial marble is more and more widely used as bed material. This material is prepared by adding auxiliary materials such as epoxy resin to granular granite. Therefore, the shape of the machine tool can be designed ...

Claims

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Application Information

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IPC IPC(8): B23Q11/00B23Q1/01G06F17/50G06N3/12
CPCB23Q1/015B23Q11/0032G06N3/126
Inventor 刘宏伟杨锐向华李波陈国华
Owner HUBEI UNIV OF ARTS & SCI
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