Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

In-place precision measurement method for three-dimensional shape error of aspheric grinding circular arc diamond grinding wheel

A diamond grinding wheel and precision measurement technology, which is applied to the parts of grinding machine tools, grinding/polishing equipment, metal processing equipment, etc. Radian error and other problems, to achieve the effect of simple measurement process and high measurement efficiency

Active Publication Date: 2017-07-07
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
View PDF12 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can accurately obtain the roundness error of the metal-based grinding wheel online in a non-contact manner, but it is also unable to accurately obtain the parameters of the arc grinding wheel such as arc radius, arc center deviation, and arc error. Non-conductive grinding wheels such as bases cannot be measured accurately

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
  • In-place precision measurement method for three-dimensional shape error of aspheric grinding circular arc diamond grinding wheel
  • In-place precision measurement method for three-dimensional shape error of aspheric grinding circular arc diamond grinding wheel
  • In-place precision measurement method for three-dimensional shape error of aspheric grinding circular arc diamond grinding wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0047] The measurement object of this embodiment is an arc diamond grinding wheel with a size of Φ400mm×W20mm. Install the diamond grinding wheel on the spindle of the ultra-precision grinding machine, and use a dresser to modify the shape of the grinding wheel. The steps of the in-situ precision measurement method of the present embodiment are as follows:

[0048] 1) Fix the non-contact displacement sensor on the surface of the magnetic table of the machine tool, the direction of the measuring beam is vertically upward, and move the coordinate axis of the machine tool to adjust the spatial position between the sensor probe and the grinding wheel, so that the light spot irradiated by the probe on the surface of the grinding wheel is located on the grinding wheel The lowest point in the X direction, while ensuring that the entire profile of the grinding wheel along the Y direction is within the measurement range of the sensor;

[0049] 2) Move the measuring head along the Y di...

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 provides an in-place precision measurement method for a three-dimensional shape error of an aspheric grinding circular arc diamond grinding wheel. The in-place precision measurement method comprises the steps that (1) height data of all points on the surface of the grinding wheel are spirally and continuously scanned and measured; (2) the data are subjected to interpolation fitting treatment according to a spiral trajectory model, a three-dimensional geometrical morphology matrix on the surface of the grinding wheel is obtained, and least square circular arc fitting is conducted, so that the circular arc radius, the circular arc center coordinate and the circular arc center deviation of the grinding wheel are obtained; (3) an average three-dimensional geometrical morphology matrix on the surface of the grinding wheel is established and subtracted from the morphology matrix, and a three-dimensional error distribution matrix, a circular arc degree error and a radial run-out error are obtained; and (4) outer circumference height data of the grinding wheel are measured, and the basic part radius of the grinding wheel is obtained through least square circular arc fitting. According to the in-place precision measurement method for the three-dimensional shape error of the aspheric grinding circular arc diamond grinding wheel, efficient precision non-contact measurement of all the important geometrical parameters of the circular arc diamond grinding wheel is achieved, and the measurement results can be directly used for precise interpolation calculation of aspheric optical element ultra-precision grinding machining grinding wheel movement control point coordinates.

Description

technical field [0001] The invention relates to the field of ultra-precision grinding of aspheric optical elements, in particular to a precision measurement method for the three-dimensional shape error of an arc diamond grinding wheel used in the aspheric grinding process. Background technique [0002] Aspherical mirrors can eliminate the adverse effects of spherical aberration, coma, and aberrations produced by spherical elements during beam transmission, reduce light energy loss when beams are focused, and improve focus and alignment accuracy. They are used in large-scale high-power optical systems. Wide range of applications. Using the method of ultra-precision grinding, high-precision large-diameter aspheric lenses can be obtained in batches. At present, it has been manufactured by many large-scale optical systems (such as NIF, KECK, TMT, GMT, EURO50, OWL, etc.) as optical components in the world. The main process used. Ultra-precision grinding is based on high-precisi...

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): B24B49/12
CPCB24B49/12
Inventor 周炼安晨辉张清华陈贤华王健赵世杰廖德锋侯晶
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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