A cae compensation method and device for virtual positioning in laser measurement
A technology of laser measurement and compensation method, applied in measurement devices, optical devices, instruments, etc., can solve problems such as judgment affecting the quality status of parts, different deformation of parts, deviations, etc., to achieve high work intensity, high precision, low cost effect
Active Publication Date: 2017-02-08
SUZHOU BEISHUO INSPECTION TECH CO LTD
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the real assembly process of the whole vehicle, bolts are often used to connect parts to the body, and the pre-tightening force of the bolts will cause the deformation of the parts; at the same time, due to the effect of gravity, the deformation of the parts is different between the virtual positioning state and the real assembly state in laser measurement , there is a deviation
As a result, the judgment of the size of the part during the virtual positioning is not accurate enough, which in turn affects the judgment of the quality status of the part
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0038] The present invention will be described in detail below in conjunction with various embodiments shown in the drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes easily made by those skilled in the art based on these embodiments are included in the protection scope of the present invention.
[0039] see figure 1 , figure 1 It is a flowchart of a CAE compensation method for virtual positioning in laser measurement according to an embodiment of the present invention.
[0040] The CAE compensation method for virtual positioning in laser measurement provided by an embodiment of the present invention, the CAE is the abbreviation of Computer Aided Engineering in English, and its Chinese translation is: Computer Aided Engineering, and the compensation method includes the following steps:
[0041] a. Evaluate and determine the first force that causes the deformation of the key area of the product under te...
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
Login to View More Abstract
The invention provides a CAE compensation method and device for virtual positioning in laser measurement. The compensation method includes the following steps that firstly, first acting force causing deformation of a critical area in a real assembly state is evaluated and determined; secondly, in combination with CAE structural analysis, the actual deformation quantity caused by the first acting force is determined; thirdly, second acting force causing deformation of the critical area in a virtual positioning state is evaluated and determined; fourthly, in combination with CAE structural analysis, the virtual deformation quantity caused by the second acting force is determined; fifthly, according to the actual deformation quantity and the virtual deformation quantity, accuracy compensation factors are acquired and transmitted to laser measurement software; sixthly, a feature district is scanned and positioned, scanning data are acquired, processing data are acquired according to the accuracy compensation factors, a product to be measured and a digifax are matched, and then the product to be measured is virtually positioned. The method and device have the advantages that the real assembly condition can be simulated, compensation for accuracy losses of virtual positioning in laser measurement is achieved, and measurement errors are reduced.
Description
technical field [0001] The invention relates to a CAE compensation method and device for virtual positioning in laser measurement, belonging to the technical field of mechanical engineering. Background technique [0002] In the field of mechanical engineering, the quality of product assembly is getting more and more attention. Taking the automotive industry as an example, the assembly quality of auto parts or assemblies directly affects the appearance quality of the vehicle, and sometimes unqualified parts size directly affects the assembly process. With the rapid development of automation technology, high precision, high efficiency, flexibility and intelligence are becoming more and more important. Dimensional measurement has gradually developed from traditional inspection tools to visual measurement. [0003] The currently commonly used measurement method virtual positioning is different from real assembly. In the real assembly process of the whole vehicle, bolts are of...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00
Inventor 王岩卞大超刘铎宋孚群王浩田张一丁张敏张冬运
Owner SUZHOU BEISHUO INSPECTION TECH CO LTD