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

A Method for Establishing 3D Optical Measuring Datum for Precision Casting Turbine Working Blades

A three-dimensional optical and measurement datum technology, applied in the field of measurement, can solve the problem of unresearched measurement datum, and achieve the effect of small deviation, simple process and improved detection efficiency

Active Publication Date: 2019-02-12
AECC AVIATION POWER CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The 3D optical measurement and evaluation software has a variety of coordinate system establishment methods, and the measurement references determined by different coordinate system establishment methods have deviations. However, for precision casting turbine blade parts, how to correctly establish the measurement reference (coordinate system) has not been studied.

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
  • A Method for Establishing 3D Optical Measuring Datum for Precision Casting Turbine Working Blades
  • A Method for Establishing 3D Optical Measuring Datum for Precision Casting Turbine Working Blades
  • A Method for Establishing 3D Optical Measuring Datum for Precision Casting Turbine Working Blades

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] see Figure 1 to Figure 5 , the present invention comprises the following steps:

[0030] Step 1, using a three-dimensional measuring device to scan the part to be tested to obtain point cloud data on the surface of the part, and the point cloud is in X, Y, Z format;

[0031] Step 2, process the scanned point cloud data to obtain STL format data;

[0032] Step 3, use the 3D optical measurement evaluation analysis software to fit the CAD digital model with the STL format model of the measured part, and establish the initial coordinate system;

[0033] Step 4: Use the 3D optical measurement evaluation analysis software to create reference points on the CAD digital model. If the coordinates of the reference points are clearly given on the drawing, then directly create 6 reference points. If no reference point is given on the drawing, it should be based on Select...

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 method for establishing a three-dimensional optical measurement basis of precision cast turbine working blades. The method comprises the steps of firstly scanning parts, establishing an initial coordinate system, creating a reference point and a positioning point via three-dimensional optical measurement evaluation analysis software, fitting the reference point and the positioning point, establishing a precision coordinate system, and finally evaluating the initial coordinate system and the precision coordinate system to obtain a final conclusion. The method is simple, low in measurement deviation of the precision cast turbine working blades and high in accuracy, and improves the detection efficiency.

Description

technical field [0001] The invention belongs to the technical field of measurement, and in particular relates to a method for establishing a three-dimensional optical measurement benchmark for precision casting turbine working blades. Background technique [0002] At present, most precision casting parts have been using the method of "fitter marking" to detect the conformity of casting allowance, which is not accurate and efficient. In the trial production stage of the product, due to the inaccurate conclusions of the fitter's scribing detection, the number of mold repairs was high, the setting time was long, and the cost was high. [0003] Precision casting parts have poor surface reflection ability and low dimensional accuracy, which meet the optical measurement conditions. [0004] The 3D optical measurement and evaluation software has a variety of coordinate system establishment methods, and the measurement references determined by different coordinate system establishm...

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 Patents(China)
IPC IPC(8): G01B11/24
CPCG01B11/24
Inventor 叶忠宇何锋朱石刚王世玮高晓斐同更强黄澈晁欣
Owner AECC AVIATION POWER CO LTD