Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Milling stability predicting method based on cubic polynomial

A stability prediction, polynomial technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as low computational efficiency of calculation methods

Inactive Publication Date: 2015-05-27
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]"On the higher-order semi-discretizations for periodic delayed systems" on "Journal of Sound and Vibration" magazine, Issue 313, 2008, published by the international publishing group ELSEVIER A milling chatter stability prediction method based on a high-order semi-discrete method is disclosed in the article, which has high calculation accuracy, but the calculation method has low calculation efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Milling stability predicting method based on cubic polynomial
  • Milling stability predicting method based on cubic polynomial
  • Milling stability predicting method based on cubic polynomial

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0155] this invention Implement with the following steps:

[0156] ① Establish the dynamic equation of the milling cutter in the single-degree-of-freedom milling process:

[0157] (1)

[0158] in, is a constant coefficient matrix, is the coefficient matrix that changes with time period,

[0159] Indicates that the tool is momentary status response, Indicates the natural frequency of the tip point, represents the relative damping, represents the modal mass, is the axial depth of cut, Indicates time lag;

[0160] Indicates the instantaneous chip thickness, and its expression is:

[0161] (2)

[0162] In formula (2), Indicates the number of teeth of the milling cutter, and are the cutting force coefficients in the tangential and normal directions, respectively, for the first The angular displacement of the cutter tooth, the expression is , the window function The definition formula is:

[0163] (3)

[...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of advanced manufacturing, in particular to a milling stability predicting method based on a cubic polynomial. The milling stability predicting method has the advantages that a state term, a delay term and a cycle coefficient term of a dynamics equation are approximated by the cubic polynomial, the required term is fit by a plurality of known time points and corresponding responses, the local error of a calculating method is reduced, and the accuracy of the predicting method is improved; an H matrix is substituted into the stability lobe graph obtaining process, and is not directly substituted into an F matrix for calculating, so the number of iteration times in the F matrix calculating process can be reduced, the time of the calculating method is saved, and the calculating efficiency is improved.

Description

technical field [0001] The invention relates to the field of advanced manufacturing, in particular to a milling stability prediction method based on cubic polynomials. Background technique [0002] With the continuous development of my country's aerospace, transportation and energy fields, high-speed cutting technology has emerged and has been widely used in the manufacture of complex parts. Chatter during milling seriously affects the surface quality of the workpiece and may cause damage to the machine tool. Predict the chatter stability of the milling process, select the appropriate processing conditions, improve processing efficiency, and reduce processing costs. [0003] The article "On the higher-order semi-discretizations for periodic delayed systems" of the "Journal of Sound and Vibration" magazine published by the international publishing group ELSEVIER on the 313th issue in 2008 discloses a milling vibration based on a high-order semi-discrete method. The vibratio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 刘志兵闫正虎王西彬王东前刘彪吕维维赵倩
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com