Aerospace Assembly

      3DCS - Three-Dimensional Deviation Analysis Specialist——Graphical tolerance simulation software.3DCS is the most advanced dimensional deviation analysis tool used to simulate the design, manufacture and assembly of the product, predicting the amount of deviation inherent in the design and determining the source of the deviation.3DCS provides the necessary tolerance analysis methods to predict process changes in an assembly ,identifies the source of additional changes and improves the stableness of the design.ultimately,enabling users to analyze and optimize designs to improve quality and reduce costs early in the design phase.


Background and status

  •  Aircraft is a special mechanical product.its aerodynamic shape has a  highly precise requirement , which makes a high demand on manufacturing. Generally consisted of wings, fuselage, tail wing, landing device, power,the whole aircraft structure dimension is large, composed of hundreds of millions of components. The shape is very complex and easy to produce deformation because the stiffness is low. The hierarchical relationship of components is complicated, including complex assembly constraints and various internal structures, which makes the accumulation of assembly errors complex.Traditional tolerance allocation and assembly process mainly rely on manual experience, and lack of rigorous technical support of tolerance allocation and assembly. Meanwhile, in aircraft assembly deviation sources are complex, and traditional assembly lacks targeted control of critical factors. Therefore, tolerance analysis of aircraft has become a core technology to improve the assembly quality and efficiency of aircraft assembly.


Solution scheme

  •  In the assembly of aerospace,tolerance allocation design and optimization ,and improvement of assembly process are an iterative process.Aerospace assembly analysis based on 3DCS requires analysis, verification and optimization of the following contents:

1、design input:the main contents are that the designer according to the experience, relevant standards and assembly process,to establish a deviation analysis model.then, combined with the analysis results, the accuracy and rationality of the original input are verified.

2、analysis and optimization: the main contents are that the tolerance allocation and assembly process are optimized and improved repeatedly according to the results, and the quality analysis based on the design state is completed. 

3、Closed-Loop: associated with plant measurement data,constructing the closed-loop analysis system ,which will further verify and analyze the deviation allocation design and assembly process of the design to promote the continuous improvement of product quality.


Advantages and features

  •  In the design and assembly of aerospace , the use of 3DCS Variation Analyst for three-dimensional deviation analysis can ensure the reliability of the design ,meanwhile, greatly improve the design efficiency, compress the project development cycle, and has the following features and advantages:

1、Optimize product design and process

     uAllows 3DCS users to pre-evaluate design and assembly concepts and identify possible problems early stage in product development.

     uOptimize critical quality characteristics, allowing users to enhance the analysis of critical area tolerances and structural process adjustment.

2、Shorten time cycles and reduce rework costs

     uUsing process capability database and product manufacturing capability to create digital virtual prototype. 

     uThe virtual prototype simulation  is used to reduce the physical prototype ,thus reducing the cost, shortening the development time, and accelerating the product delivery to the market.

3、Identify the critical contributors

     uDetermine the deviation source and identify the critical contributors. 

     uMeet the size requirements while maximizing the tolerances of the parts, reducing rework of tools and instruments, minimizing scrap, reducing defects, and thus reducing manufacturing  costs. 

     uBefore the design is released to the entire process of the product, the use of 3DCS  to check the function and assembly of components, ensuring the minimum requirements and significantly improve product quality.

4、Continuous improvement in quality

     uCreating a closed-loop quality deviation analysis system for associated plant data, fully evaluate the pre-design and post-manufacturing, and establish the enterprise process capability Library. 

     uCreating a  mechanism for data-driven production.