Evaluation method of part flatness error based on minimum area

An error evaluation and minimum area technology, which is applied in the field of part flatness error evaluation, can solve problems such as poor calculation stability, difficulty in applying the minimum area method, and difficulty in achieving calculation results.

Inactive Publication Date: 2013-08-21
陈磊磊
View PDF3 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the shortcomings of these methods, such as poor calculation stability, low calculation efficiency, limited number of sampling points,

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
  • Evaluation method of part flatness error based on minimum area
  • Evaluation method of part flatness error based on minimum area
  • Evaluation method of part flatness error based on minimum area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] The following is attached figure 1 The embodiments of the present invention will be described in detail.

[0044] Step 1: Place the measured plane on the measuring platform, measure and acquire the points on the plane in the rectangular coordinate system of the measuring space , =1, 2,... n , n Is the number of measuring points and n Is a positive integer greater than 3, all measuring points Form a set of measuring points ; Arbitrarily select 3 measuring points that are not on the same straight line, and calculate the normal vector of the plane of the 3 points , As the initial iterative value of the ideal plane normal vector corresponding to the measured plane.

[0045] Step 2: Calculate the measuring point set in sequence Distance from each measuring point in the middle to the ideal plane , And record the measuring point set separately The measurement points corresponding to the maximum and minimum distances from each measurement point to the ideal plane; the measure...

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 discloses an evaluation method of a part flatness error based on a minimum area method. The evaluation method comprises the steps of measuring and obtaining coordinates of measuring points on a measured plane, giving an initial parameter of the plane, enquiring the measuring points contacted with an error containing area according to the distances from the points to the plane, projecting the measuring points into a designated plane and converting into straightness error calculation in the designated plane by a coordinate system transformation method according to the quantity and the relative positions of the contact points, searching the measuring points contacted with the containing area and satisfying a straightness error discretion rule through the rotation change of the containing area in the projection plane, obtaining a rotated containing area, redefining a projection plane, conducting iterative calculation sequentially according to the straightness error calculation till a flatness discretion rule is satisfied, and outputting the flatness error and an optimal value corresponding to an ideal plane parameter. With the adoption of the evaluation method, the flatness error satisfying a minimum area discretion rule can be accurately calculated.

Description

Technical field [0001] The invention discloses a method for evaluating the flatness error of a part based on a minimum area, which belongs to the field of precision measurement and computer application, and can be used for the qualification detection of plane elements in geometric products under various conditions, and is an improvement of the processing process and the processing technology. Provide guidance. Background technique [0002] Flatness error is an important evaluation index for the plane accuracy of parts, which is widely used in work platforms, machine tool rails and various flat parts. Commonly used evaluation methods for flatness are: least square method, minimum area method, three-point plane method and diagonal plane method. Only the minimum area method meets the tolerance definition, and the calculation result is the smallest and unique. International ISO standards and most national standards stipulate the minimum condition as the arbitration criterion for th...

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): G01B21/30
Inventor 陈磊磊黄美发宫文峰田文豪
Owner 陈磊磊
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