Unlock instant, AI-driven research and patent intelligence for your innovation.

Non-contact coordinate measuring machine

A coordinate measuring machine, non-contact technology, applied in the field of optical detection, can solve the problem of reduced positioning accuracy

Active Publication Date: 2018-07-31
SUZHOU UNIV +1
View PDF10 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is: to solve the problem that the normal direction of the measured point needs to be aligned with the probe when using the existing non-contact coordinate measuring machine to measure, which leads to the problem of reduced positioning accuracy

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
  • Non-contact coordinate measuring machine
  • Non-contact coordinate measuring machine
  • Non-contact coordinate measuring machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] as attached figure 2 As shown, a non-contact coordinate measuring machine includes a frame 14, an optical probe, a three-dimensional motion mechanism, a display system 19 and a control system 18, the optical probe is arranged on the three-dimensional motion mechanism, and the three-dimensional motion mechanism Set on the frame, the frame is connected with the control system, and the control system is connected with the display system, wherein the three-dimensional motion mechanism consists of three mutually perpendicular X-axis translation mechanisms 15, Y An axis translation mechanism 17 and a Z-axis translation mechanism 16 are formed, one of which is arranged in a vertical direction, and a position measuring device is arranged on the three-dimensional motion mechanism for recording the amount of position change;

[0018] It is characterized in that: the optical probe is composed of an interference optical path, such as figure 1 As shown, the interference optical pa...

Embodiment 2

[0022] On the basis of the technical solutions of the above-mentioned embodiments, such as figure 1 As shown, a non-contact coordinate measuring machine, a small aperture diaphragm 13 is also arranged between the spherical shell lens and the focusing lens. The aperture diaphragm can effectively filter stray light and improve the quality of interference fringes. Such as figure 2 and image 3 As shown, when measuring a high-steep test piece, data acquisition can be completed without aligning the normal direction of the detection point of the test piece with the optical probe.

Embodiment 3

[0024] Embodiment 1 On the basis of the technical solution, a non-contact coordinate measuring machine, the position measurement device provided on the three-dimensional motion mechanism is a grating ruler or a lead zirconate titanate piezoelectric ceramic (PZT) displacement position measurement device.

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 a non-contact coordinate measuring machine, and solves a problem that the positioning precision of a conventional non-contact coordinate measuring machine is reduced because the normal direction of a measured point needs to be aligned with a probe when the conventional non-contact coordinate measuring machine is used for measurement. A spherical shell lens is introduced based on a Twyman-Green interference optical path, and an interference-type optical probe is built successfully. During measurement, the optical probe is adjusted to be focused on one point on a measuredpart, and a measurement beam is reflected by the internal surface of the spherical shell lens to an optical system. The measurement beam enters a CCD image sensor through a beam splitter to form interference fringes with a reference beam, and a positioning metering device records the position information of a moving mechanism at the moment. The motion mechanism sequentially records the position information of other points where an image space focus of a focusing lens is located on the measured part, and obtains the surface form of the measured part through data processing. The device simplifies the moving mechanism, reduces the mechanical positioning error, and can measure a high-steepness element.

Description

technical field [0001] The invention belongs to the technical field of optical detection, and in particular relates to a three-dimensional contour measuring machine. Background technique [0002] The most commonly used method for three-dimensional surface measurement is three-coordinate measurement. Three-coordinate measurement technology has many advantages such as strong versatility, high degree of automation, and high measurement accuracy, and has been widely used in the fields of machinery and electronics. At present, according to the form of the three-coordinate measuring machine probe, the three-coordinate measuring machine can be divided into a contact three-coordinate measuring machine and a non-contact three-coordinate measuring machine. At present, non-contact three-coordinate measuring machine mainly has two forms: laser point measurement and line laser scanning measurement. For contact CMMs and non-contact laser point measurement CMMs, the measurement process r...

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): G01B11/25
CPCG01B11/2441G01B11/25
Inventor 黄启泰管敏
Owner SUZHOU UNIV