Angle vector analysis method for 2D (two dimensional) dimension chain

A technology of vector analysis and dimensional chain, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as inaccurate calculation results, and achieve the effect of improving accuracy

Active Publication Date: 2015-04-01
北汽瑞翔汽车有限公司
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Problems solved by technology

[0002] At present, dimensional engineering professional and dimensional design companies often ignore the angle between the closed ring and the direction of the component ring when calculating the 2D dimensional chain of the DTS area of ​​the vehicle appearance, and all of them are treated as 0°, resulting in inaccurate calculation results and resulting in calculation The result is not precise enough

Method used

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Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with specific embodiments.

[0014] A 2D size chain angle vector analysis method, which includes,

[0015] S1. According to the assembly strategy or part design drawing, obtain the basic information of the constituent rings and closed rings of the dimensional chain, and use the statistical method to calculate the constituent ring tolerance T1 and the closed ring tolerance T0 respectively;

[0016] S2. Analyze the relationship between the tolerance T1 of the component ring and the tolerance T0 of the closed ring, T0=T1cosa, get T0 / T1=cosa, which is the angle vector, where a is the folder between the direction of the tolerance zone of the component ring and the direction of the tolerance zone of the closed loop horn;

[0017] S3. The tolerance zone of hole-pin fit obeys 360° divergent distribution, and the included angle between the direction of the tolerance zone of the constituent ring and t...

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Abstract

The invention discloses an angle vector analysis method for a 2D dimension chain. Included angles consisting of the ring surface characteristics and non-ring surface characteristics in 3D data are directly measured to obtain angles, and then the angles are substituted into T0/T1=cosa, so that the angle vector is obtained. The invention not only can effectively consider the influence of the included angles consisting of the ring tolerance zone and closed ring tolerance zone on the whole tolerance analysis result, but also can realize the measurement of the included angles conveniently, so that the accuracy and reasonability of dimension tolerance analysis are accordingly improved, and the tolerance distribution is finally ensured to meet the requirement of finished automobile assembly.

Description

technical field [0001] The invention relates to a dimension chain angle vector analysis method, based on the field of mechanical precision design, in particular to a 2D dimension chain angle vector analysis method. Background technique [0002] At present, dimensional engineering professional and dimensional design companies often ignore the angle between the closed ring and the direction of the component ring when calculating the 2D dimensional chain of the DTS area of ​​the vehicle appearance, and all of them are treated as 0°, resulting in inaccurate calculation results and resulting in calculation The result is not precise enough. In order to improve the accuracy of dimensional engineering tolerance analysis, it is necessary to design a method that can not only consider the angle vector, but also facilitate the measurement. Contents of the invention [0003] In view of the deficiencies in the above-mentioned prior art, the present invention aims to provide a 2D dimens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 张旭光刘毓春姜伟董海波
Owner 北汽瑞翔汽车有限公司
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