Rigidity-variation-based milling chatter suppression method and milling flutter optimization system

A technology of milling chatter and stiffness change, applied in the direction of manufacturing tools, metal processing machinery parts, maintenance and safety accessories, etc., can solve problems that have not yet been discovered

Active Publication Date: 2017-12-12
XI AN JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

[0003] In previous milling chatter suppression, no research on chatter suppression through real-time stiffness changes has been found

Method used

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  • Rigidity-variation-based milling chatter suppression method and milling flutter optimization system
  • Rigidity-variation-based milling chatter suppression method and milling flutter optimization system
  • Rigidity-variation-based milling chatter suppression method and milling flutter optimization system

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Embodiment Construction

[0041] Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and is not limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0042] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that they may use different terms to refer to the same component. The specification and claims do not use differences in nouns as a way of distinguishing components, but use differences in functions of components as a criterion for distinguishing. "Includes" or "comprises" mentioned throughout the spe...

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Abstract

The invention discloses a rigidity-variation-based milling chatter suppression method and a milling chatter optimization system. The method comprises the steps of carrying out a hammering modal experiment on a milling cutter to obtain modal parameters, such as modal mass, modal stiffness and modal damping, of the milling cutter; carrying out a milling force coefficient identification experiment on a predetermined workpiece material to obtain a milling force coefficient; establishing a stiffness time varying milling dynamical equation; conducting stability analysis of the stiffness time varying milling dynamical equation under various stiffness changes to obtain milling stability lobe graphs under different conditions, comparing the lobe graphs and selecting the maximum cutting limit depth as the cutting parameter to suppress chatter. By means of the method and system, milling chatter can be effectively suppressed, the milling stability lobe graphs are improved, and the machining quality and the machining efficiency are improved.

Description

technical field [0001] The invention belongs to the field of milling processing, in particular to a milling chatter suppression method based on stiffness change and a milling chatter optimization system. Background technique [0002] The current CNC machining is developing towards high speed. In the high-speed machining environment, it can not only achieve high machining efficiency, maintain a low cutting temperature and prolong the service life of the milling cutter, but also make it possible to process thin-walled parts. However, in the process of high-speed machining of machine tools, there is a chatter phenomenon that seriously affects the machining quality and efficiency. Chatter is a kind of self-excited vibration between the tool and the workpiece. The occurrence of chatter will cause huge economic losses, such as tool wear, deterioration of workpiece surface quality, and reduced processing efficiency. Research on chatter suppression can greatly increase tool life, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/12B23Q17/09B23Q11/00
CPCB23Q11/0032B23Q17/09B23Q17/12
Inventor 陈雪峰王晨希张兴武刘金鑫
Owner XI AN JIAOTONG UNIV
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