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Milling stability analysis method based on overall discrete strategy

An analysis method and stability technology, applied in the field of milling, can solve the problem that modeling and stability analysis methods cannot take into account calculation accuracy and calculation efficiency

Pending Publication Date: 2019-08-23
COMAC +1
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Problems solved by technology

[0006] The technical problem to be solved in the present invention is to overcome the defect that the modeling and stability analysis methods of the milling process in the prior art cannot take into account the calculation accuracy and calculation efficiency, and propose a milling stability analysis method based on the overall discrete strategy

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  • Milling stability analysis method based on overall discrete strategy
  • Milling stability analysis method based on overall discrete strategy
  • Milling stability analysis method based on overall discrete strategy

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Embodiment Construction

[0065] The preferred embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. The following descriptions are exemplary and not limiting to the present invention. Any other similar situations also fall within the protection scope of the present invention.

[0066] In the following detailed description, directional terms, such as "left", "right", "upper", "lower", "front", "rear", etc., are used with reference to directions described in the drawings. Components of embodiments of the present invention may be positioned in a variety of different orientations, and directional terms are used for purposes of illustration and not limitation.

[0067] refer to figure 1 As shown, the milling stability analysis method based on the overall discrete strategy according to a preferred embodiment of the present invention includes the following steps:

[0068] Step 1, converting the milling time-delay kinetic equation of the...

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Abstract

The invention discloses a milling stability analysis method based on an overall discrete strategy. The method comprises the following steps: converting a milling time delay kinetic equation of a milling system into a state space equation; obtaining an analytical solution of the state space equation according to the situation that the milling system is in the free vibration process, and for the situation that the milling system is in the forced vibration process, adopting a Lagrangian interpolation function to integrally approach a periodic coefficient item, a state item and a time delay itemof the state space equation for solving; constructing a Floquet transition matrix according to the solution of the state space equation; and calculating the spectral radius of the Floquet transition matrix, and judging the stability of the milling system according to the spectral radius. According to the method, the calculation process of milling stability analysis is simplified, the calculation efficiency is improved, and compared with an existing semi-discrete method and an existing full-discrete method, higher approximation precision can be obtained.

Description

technical field [0001] The invention relates to the technical field of milling, in particular to a milling stability analysis method based on an overall discrete strategy. Background technique [0002] Milling is a basic and extremely important machining method. As one of the core technologies of high-performance machining, high-speed milling technology is widely used in the manufacture of various complex parts because of its advantages of high precision and high efficiency. Regenerative chatter is a self-excited unstable phenomenon common in milling process. The occurrence of chatter has a great negative impact on the surface quality of workpieces, machining efficiency and tool life. Therefore, it is necessary to take effective technical measures to avoid the occurrence of this unfavorable phenomenon. From the perspective of suppressing regenerative chatter, an effective technical means is to select chatter-free process parameters according to the stability lobe diagram ...

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Application Information

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IPC IPC(8): G06F17/11G06F17/16G06F17/50
CPCG06F17/11G06F17/16G06F30/20Y02T90/00
Inventor 李汝鹏刘成良汤海洋覃程锦薛雷陶建峰黄稳段贤强
Owner COMAC
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