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How to automate the process of design verification

Print View , by: iSee ,Total views: 22 ,Word Count: 1452 ,Date: Sun, 16 Aug 2009 Time: 10:08 AM

With the CAD modeling techniques become more advanced, parametric feature-based modeling, and modeling techniques, such as synchronous application of breakthrough technologies become more widespread, senior management began to realize that much faster than the speed of product modeling and design changes. However, we still need to check and review the creation of these high-performance design, to ensure that meet the company, team, customers and industry to develop drawings and models of design standards. This article is to explore the design verification and related problems as well as how to effectively manage the process to be automated in order to avoid delaying time to market or to a negative impact on product quality bottleneck.

How to automate the process of design verification

Authentication problem

CAD models and drawings and authentication-related issues can be divided into three areas - productivity, quality (product and the CAD model), as well as process management.

First of all, designers can spend a lot of time for model checking whether there are any problems or errors, and after design changes during the review. Productivity continued to rise with the design, inspection process of the product development process may become a bottleneck.

Second, CAD users need to meet the growing number of design standards and objectives. If as a result of human error or because designers do not know a specific industry standards and did not find errors, these errors may be spread from the CAD model analysis and / or manufacturing model, thus a negative impact on product quality, and ultimately affect product delivery.

Finally, regardless of your business is a major OEM manufacturers, or a few small and medium-sized suppliers customers, you will face a large number of a wide range of CAD drawings and the model standards and design standards. Enterprise need for effective management of these standards, so no problem, and to maintain efficient product design.

As a result of facing these challenges, the need to start well aware that we not only need to automate the verification process to improve efficiency, but also need to check the function of automatically activated to ensure that the most effective in the verification time to verify, for example, when a modeling error or violation of design specifications, the immediate feedback. In addition, the necessary design requirements of automatic tracking, and the demand management process and integrate the design process.

To improve productivity and quality verification

In considering how to improve the design of inspection and verification productivity, the need to pay attention to two issues: standards validation and design verification.

Means test to check all aspects of design (spare parts, drawings, assembly), to ensure that the design in line with the company's modeling standards (the use of layers, colors, etc.), graphics standards (tolerancing, font size, etc.) as well as best practice disciplines ( For example, the minimum pipe bend radius on the road or on sheet metal parts bent slot corner position) (Figure 1 shows the test NX software interface). In relation to the design in the context of these inspections are not proprietary to a specific part design checks.

Authentication The second major category of design objectives is to examine the individual test items or key. These inspections is more designed for specific items, the focus is to ensure that the implementation of a specific design features to meet the important standards of the company rather than the general standards or industry standards, as shown in Figure 2 NX software verification. These requirements will affect the shape of the design to meet or function, which may include parts of the particular specification, such as dimensional tolerances, weight limits or minimum clearance between parts. Product specification documents are provided for this type of request. Design system should be able to use the definition of each of the local demand (including demand management tools, xml documents or EXCEL spreadsheets) for automatic verification.

No matter what type of verification carried out, preferably automatically, in the inspection process should not carry out any direct interaction between users. Is to ensure the realization of fully automated line to verify an important step in the implementation, quality control standards to ensure that the actual useful. Found the problem, the user should immediately receive feedback, and then proceed to full control in order to further verify the interaction, to solve the problem.

This can provide immediate feedback will automatically check the company's existing work Patterns brought about major changes. In addition to the design may significantly reduce inspection time, will shorten the design time problem, which flows to the lower reaches of the problem to minimize the possibility, to avoid triggering a series of other problems. This will avoid costly rework, increase productivity and quality. In addition, in violation of a corporate design standards or industry practice, if the designer can be notified immediately, they can not only correct the errors, but also learned from the process of things. This will help the training of design staff, to improve efficiency, boost confidence and to believe that all the models and to achieve the design requirements.

PLM and CAD technologies used to manage authentication

Of course, the only design requirements tracking, CAD industry standard practice, as well as the number may be an enormous challenge - not to mention a lot of demand will change as time changes. Therefore, we must be able to design systems or integrated in digital format to capture and maintain this information.

For example, NX Check-Mate is a Siemens PLM Software's NX CAD software as part of the application to allow for standards-based inspection, to ensure that the file structure to maintain consistent and in line with a variety of companies and industry standards.

The use of Siemens PLM Software applications TeamcenterRequirements provide a way to easily store and edit all the needs of its directly connected to the NXCAD applications, and then on the basis of these needs can be highly efficient, continuously validate the design. Similarly, NX can also be stored in the CAD design of authentication other than the EXCEL spreadsheet or xml file which needs. This feature we called "demand-driven design verification (RDDV)".

These can be run interactive verification tool, or set it to run automatically so that the process of the company according to their own custom authentication solution.

In order to increase the authentication level from the maximum value, the method must be useful to verify the results together with the parts store. Published in parts in the context of workflow, validation results can be an important tool to help ensure that only validated releases of components, and parts did not pass the authentication is not released. Should be easy to understand graphical manner and can be used in the format used by the company to report these results. The use of "signal quality" and tool to generate reports and monitor the quality of the model - which is to improve the quality of the design part of a continuing process.


Through the management of the design verification process, engineers can use the latest advanced design techniques to enhance confidence and consistency in order to provide faster and higher-quality design

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