Multi-axis numerical control machine tool C-axis geometrical error measuring system and parameter identification method

A technology for geometric error and parameter identification, applied in geometric CAD, electrical digital data processing, special data processing applications, etc., can solve problems such as difficult geometric error parameters, increased geometric error parameters, complex coupling relationships, etc.

Pending Publication Date: 2017-08-18
BEIJING UNIV OF TECH
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the addition of rotating axes to multi-axis CNC machine tools, the geometric error parameters increase significantly, and there are complex coupling relationships between them.
Therefore, it brings great difficulties to the identification of geometric error parameters, and at the same time puts forward h

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
  • Multi-axis numerical control machine tool C-axis geometrical error measuring system and parameter identification method
  • Multi-axis numerical control machine tool C-axis geometrical error measuring system and parameter identification method
  • Multi-axis numerical control machine tool C-axis geometrical error measuring system and parameter identification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0095] The method of the invention is realized by measuring with a ballbar. The ballbar is equipped with a high-precision displacement sensor in the retractable fiber rod, which can be used to detect the change of the length of the fiber rod, so as to analyze various geometric error parameters of the C-axis through the collected data.

[0096] The method of the present invention specifically comprises the following steps:

[0097] Step 1, according to the multi-body system theory, establish the motion relation equation of two adjacent bodies;

[0098] Step 2, through the analysis of the machine tool rotation axis, get the geometric error item of the C-axis, and then according to the working principle of the ballbar, get the radial, tangential, and axial directions of the three measurement modes of the C-axis geometric error parameter identification . A h , B h 、D h The point is the connection end with the tool spindle. Due to the geometric error of the worktable (C-axis) ...

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 a multi-axis numerical control machine tool C-axis geometrical error measuring system and a parameter identification method. A motion equation with geometrical error and a motion equation under an ideal state are established under radial, tangential and axial three linkage modes by aiming at the structure and the characteristics of the multi-axis numerical control machine tool C-axis and by using a multibody system theory according to the working principle of a ball bar instrument, the two-end coordinates of the ball bar instrument are expressed into the same coordinate system separately through the variable quantity of the two-end positions of the ball bar instrument, and the actual distance between the two points is evaluated, so that the relation between a theoretical model and an actual measurement value is established and identification of eight geometrical error parameters of the C axis is realized. All the error items of the rotary C axis are identified, the coupling phenomenon existing in the geometrical error parameters is solved, accuracy and rapidness are realized, the identification precision is high, and important theoretical significance and practical significance in realizing the rest rotating shafts of the multi-axis numerical control machine tool are achieved.

Description

technical field [0001] The invention relates to a geometric error parameter identification and measurement system and method, which are suitable for the C-axis of the rotation axis of a multi-axis numerical control machine tool, and realize the identification of geometric error parameters by establishing the relationship between a theoretical mathematical model and an actual measurement value. Background technique [0002] In modern manufacturing, multi-axis CNC machine tools can simultaneously adjust the cutting position and direction of the tool relative to the workpiece. Therefore, compared with traditional three-axis CNC machining, multi-axis CNC machine tools have higher cutting efficiency and machining accuracy, and play an important role in processing complex parts in the fields of aviation, aerospace, energy and national defense. Horizontal technological breakthrough. [0003] However, due to the addition of rotating axes to multi-axis CNC machine tools, the geometr...

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
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/367
Inventor 范晋伟邬昌军李中生陶浩浩
Owner BEIJING UNIV OF TECH
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap