Multi-frequency variable-rotation-speed based milling chatter restraining method

A milling chatter and speed technology, which is applied in the manufacture of tools, metal processing machinery parts, maintenance and safety accessories, etc., can solve the problems of multi-frequency speed that have not been found, and achieve the goal of improving processing quality, suppressing chatter, and improving processing efficiency Effect

Active Publication Date: 2018-12-21
XI AN JIAOTONG UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] In the previous milling chatter suppression, no research has been found on the use of multi-frequency speed changes to suppress chatter

Method used

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  • Multi-frequency variable-rotation-speed based milling chatter restraining method
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  • Multi-frequency variable-rotation-speed based milling chatter restraining method

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Embodiment Construction

[0034] 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.

[0035] 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 multi-frequency variable-rotation-speed based milling chatter restraining method. The method comprises the following steps of: performing a hammering modal experiment on a milling cutter to obtain modal parameters such as modal mass, modal rigidity and modal damping; performing milling force coefficient identification experiment on a predetermined workpiece material to obtain a milling force coefficient; establishing a multi-frequency variable-rotation-speed milling kinetic equation; analysing stability of a rigidity time-varying milling kinetic equation to obtain a milling stability leaf figure under multi-frequency variable rotation speed; and spreading a rotation speed change equation through Fourier series, utilizing an intelligent algorithm to optimize a rotation speed change function, thereby obtaining the optimal milling stability leaf figure. The method can effectively restrain milling chatter, improves the milling stability leaf figure, and improves processing quality and processing efficiency.

Description

technical field [0001] The invention belongs to the technical field of milling processing control, in particular to a milling chatter suppression method based on multi-frequency variable speed. 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, improve mac...

Claims

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Application Information

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