drawing to 3d solid autocad

With rapid change in technology, peculiarly in the surface area of Computer Aided Design, customers are demanding quick and accurate 3D models for their like shooting fish in a barrel visualization and quick projection completion time. Further at that place is a rapid transformation from 2d CAD to 3D CAD solutions. This article provides an overview and basic technique available to convert the existing 2d CAD drawings into 3D CAD models without much loss in fourth dimension and data using 3D Computer Aided Design software's similar Autodesk Inventor. This technique not only allows users to convert CAD 2D drawings, but also allows conversion process with more accuracy. Further the various concepts involved in converting the 2nd CAD drawings into 3D CAD Models leading to easy conversion of STL format, which tin can be after used for physical prototyping is a too discussed

Introduction

3D is a real object or true depiction of existent paradigm. Though we may exist viewing 3D image on plane newspaper or computer monitor (both flat 2D), our brain compares 3D image with its own archive of 3D real objects equally seen past our eyes in past and hence even not and so adept 3D image provide more information to our brain than plain 2D drawing. Fifty-fifty for a layman, identification of loftier rise sky scrapper is merely easy if yous prove him a 3D model but extremely hard if you show him Plan, Elevation and Sectional Drawings of same building. For engineer, both are good enough, because he is trained to understand 2D. Well! In simple terms, understanding 3D is part of natural procedure, where as you need to go trained to sympathize 2nd

Design engineers by and large focus on ane main upshot; they include either designing or drafting or in some applications both. The primary difference between second and 3D technology is apparent in the corporeality of time designers spend on these tasks when they use the respective tools. Dissimilar 2nd drafting tools, 3D modeling technology provides life like representation of a design, from structural limerick and the fashion parts fit and motility together, to the functioning bear on of characteristics such every bit size, thickness, and weight. When design engineers can encounter the sum of the parts in 3D, they can meet problems and opportunities without ever having to spend time creating documentation. Further any CAD user would definitely affirm that a simple second drawing doesn't concenter much attention, just the third dimension tends to impress people Rather than starting a new product concept with meticulous 2D technical drawings of elements that might not office equally planned, this technology speedily shows whether a blueprint idea is viable or not based on existing data. This difference amounts to business advantage for companies that otherwise might take to retrace all manufacturing processes in search of an answer or build physical prototypes of products that don't role as desired.

2D to 3D Conversion Engineering

With the emergence of 3D modeling tools, which occurred two decades agone, it is estimated that roughly 75% of the current CAD user base still primarily employs second drafting. Although with rapid change, the pace of migration from 2d drafting to 3D modeling to have accelerated, unyielding time-to market place constraints offer no opportunity for manufacturers to allow users to suit to new paradigms and convert legacy drawings into new formats without being productive at the aforementioned time. Notwithstanding some manufacturers are not only accomplishing this feat, simply excelling in top-line and lesser-line measures.

All 3D CAD tools available in the marketplace today tin can easily generate a 2D drafting view from a 3D CAD model and this further proves to exist genuine true. Further this technology is used in every day project activity by a designer, which in plow tin exist directly used by a machine operator to manufacture the component using any sophisticated CNC auto. However the concept of converting a 2D cartoon into a 3D native CAD model is quite challenging and the process of conversion looks quite complicated. However this process is now simplified using popular 3D modeling tools like Autodesk Inventor, Solid Border which is a 3D CAD solution provider. Further one needs to understand that, the concept of second to 3D applied science is to simplify the process of creating 3D function models from existing second CAD drawing.

Further this technology helps design and manufacturing engineers to improve productivity to a greater extent. Typically, reconstructing a 2D geometry into 3D model involves the employ of basic Extrude feature and this is easily accomplished if the projected views are aligned on orthogonal planes. Apart from features mentioned above, other features like hole, chamfer, and fillet are ideally created past Boolean operations which involves cut and intersect options. The algorithm that works in achieving this engineering is generally based on Boolean operation. To sympathise this engineering, the second to 3D conversion is carried out from AutoCAD 2008 to Autodesk Inventor 2008 developed by"AutoDesk®".

Benefits of 3D in an organization

With many companies migrating from second CAD to 3D solid modeling for mechanical design, Solid modeling shortens blueprint cycles, streamlines manufacturing processes, and accelerates product introductions by improving the flow of product design data and communication throughout an arrangement, as well as amongst its suppliers and customers. For any business organisation, this ways faster time-to-market and higher quality products translate into increased revenue, while reduced design costs provide larger profit margins.

Some of the benefits of 3D are listed below

Faster product design (roughly around 45% faster on average)
Automated flattening of canvass metal parts (with bend allowance)
More than effective communication with suppliers/customers
Visualize more 'what-if' scenarios during the design process
The ability to create renderings and animations for design proposals or reviews
More constructive internal design reviews
Generation of virtual prototypes allows non-CAD people to participate in the process
Easily incorporate late design changes
Examination and validate designs to reduce costs from quality problems, errors, ECO's
Reduce the need and cost of physical prototypes
Automatic Bills of Materials
Better employee morale
Increase customer confidence and loyalty
Data direction to organize and manage your design data
Helps to standardize on detailing and drafting practices
Easily manufacture your designs with manufacture leading partner products
Automate your pattern process and increment speed and accurateness of output and response to customers
Allow non-technical personnel such equally sales department (and even customers) to quote, specify and configure production whilst maintaining your blueprint & engineering science integrity

3D CAD and Product Development Process

Nowadays the production development team must wait way across questions of drawing productivity when deciding on the right CAD tools to specify. 2D CAD technology has delivered all the drawing productivity improvements that are likely to get and those benefits accept long ago been absorbed. 3D CAD, on the other manus, is a completely different technology, capable of delivering far more broad-ranging benefits across the whole of the engineering and collaborative engineering process. Whereas 2D CAD shortens time scales to some extent, 3D CAD goes much further, directly supporting the whole product development bike, speeding upward every action and increasing the quality of design past
removing many sources of inaccuracy and mistake, the authentic 3D solid geometric model, together with all the non-geometric engineering information attached to it, becomes a consummate 'digital product model' for purposes of blueprint review, holding all the data required to analyze, procure and make it, in a course immediately usable by all engineering processes. When allied to production data direction and the Cyberspace, 3D solid modeling provides an entire foundation for product information menses across the collaborative engineering network. A 2D drawing is an indirect and incomplete representation of an technology product or organisation, subject to interpretation and fault. Taking off data in correct form for downstream assay, simulation and manufacturing processes requires additional endeavor and is bailiwick to mistakes. Sending drawings electronically to partners, customers and suppliers is fine, but the potential for errors and misinterpretation remain. By dissimilarity, 3D solid modeling produces a consummate and accurate geometric model of the product, analogous to a concrete model. Any required geometric and physical information can be derived from it for purposes of engineering assay, simulation and manufacture, using linked specialist applications that have become an integral part of the concurrent engineering science process. Given this loftier degree of integration it becomes feasible to iterate through several cycles of design, analysis and manufacturing simulation at an early phase in blueprint in order to encourage innovation while achieving the best possible product inside the time available. Product and engineering science data management, similarly integrated, ensures that the engineering production is fully and accurately documented by the time the design is complete

Basic 2nd to 3D Conversion Methodology

Typically whatsoever 3D modeling tool that involves the conversion of second to 3D should work in line with the above menstruum nautical chart in guild to create accurate and quick 3D models from existing second drawings. The same process is likewise used by Autodesk Inventor 2008, in generating 3D CAD models. However during transfer of data from second to 3D sufficient intendance should be taken to ensure shine transition process. This includes exporting only the desired geometry (lines and polylines) and retaining the layers, dimension styles, all axis lines that be in the 2d data. Further the properties similar line blazon, line weight are also vetoed.

Further with reference to the figure 2 if all the views are oriented in a drinking glass box, i.e. in their respective position, then the process of extrusion and Boolean operation becomes easier. This is the basic concept of 2D to 3D conversion.

Interoperability Bug

From recent developments, in area of CAD, interoperability is the key issue which integrates diverse CAD CAM CAE tools. Further, this technology helps seamless transition of CAD information either from 2nd to 3D or from 3D CAD tools to CAE tools. The geometric kernels, used in these tools are seamless, since they work on the same coding using popular programming tools similar C++, C# and VB.

Stages in conversion from 2D to 3D

Converting second files to 3D solid models tin exist expensive and deadening for big manufacturers with tens of thousands of product drawings. But a programming mathematics combines the serial of sparse slices on a logical path to course a 3D object. Every 3D object used in AutoCAD or Inventor got its base of operations as 2D shape. Box got rectangle as base of operations shape and Cylinder got circle as a base shape. When dealing with 2D model, the third dimension is silent (zero value), as soon equally 3rd dimension assumes some value other than zero is given to adjust the changes in second to 3D, model is at present termed every bit 3D model. How always, the fundamental concept is to suit the 2D geometry onto a"glass box" making it like shooting fish in a barrel to convert the design into 3D

The key concept apart from utilize of tools like Extrude and the work flow that involves in conversion from 2D to 3D is listed below in four steps leading to effective conversion technique. Farther a unproblematic case written report is taken to understand the conversion process.

i. Establishing the base geometry (front View)
two. Identification of projected geometry (Side and Tiptop View)
three. Alignment of various geometric views
4. Extrude (Boolean operation)

i. Establishing the Base Geometry (forepart View)

A second drafting tool like AutoCAD having file extensions as *.dwg provides seamless data transition into any 3D CAD system. Hence a drawing as shown in figure 3 is generated in AutoCAD 2008. Farther this data is imported into Autodesk Inventor 2008 using Insert AutoCAD file option. During this translation process, using filter technology option built in, Autodesk Inventor, data like dimensions, diverse line type parameters, layers are filtered before they are actually imported into the second to 3D module. This process leads to effective and accurate conversion from 2D to 3D. Once the views that are drawn using AutoCAD are imported into inventor, the base view is aligned along the XY plane. Nonetheless, this process tin can be extended to conversion of a transmission drawing into CAD drawing using the technique of raster to vector conversion. The base view by and large refers to the front end view in whatever orthographic project.

two. Identify Projected View geometry

With a seamless data transition from a 2nd CAD package to a 3D parametric CAD tool, information technology is essential to have a significant technique to enable quick and accurate orientation of data from various views. This process can generally be established by orienting various views into a box, which provides all three planes like XY – YZ – ZX, since a 3D model tin be viewed from 6 different orientations. To amend understand this, consider a cube, which includes all the 4 views followed by top and bottom view. Based on the view blazon, the corresponding views can exist selected to improve associate with the front view as shown in figure 05.

three. Alignment of diverse geometric views

Once a the basic views are identified, that are necessary for creation of a 3D Model, the orientation and alignment bug are very important before the 3D model can be extruded. These alignments are generally carried out using basic translation technique which basically includes simply movement control to appropriate plane, since other technique cannot provide an accurate 3D model. However it is clear that when translation process is carried out, the entire view is fabricated use to position accordingly. Figure vi provides the iii view alignment before this could be converted into a 3D model.

4. Extrude (Boolean operation)

The models, afterward appropriate orientation, demand to be extruded for creating the 3D model. The conversion is generally made easy by selecting one view at a time. Once the basic view is extruded, it is essential that all other views needs to be created using a combination of Extrude and Boolean performance, by accomplishing this procedure the final 3D Part model would be gear up without any errors. However the user must ensure proper use of the sketch, since, once the sketch has been utilized for extrusion or Boolean, that sketch cannot be used again. The process of cut and intersect is mainly used for arriving at the final model. To meliorate understand this technique refer figure 7.

Conversion from CAD to RP files

Any 3D modeling tool, has the capability of converting a 3D CAD model into an STL file. This conversion is once more using the triangulated format technique; generally know as the STL format. These formats help users to directly interface with any Rapid Prototyping machine to apace create a 3D Model. This technique calls for quick concept to market scenario since, the process of physical prototyping is taken care in a brusque time. Farther any changes can always exist done within considerable time, leading to better sustainability in the market. The concept of rapid prototyping reduces the manufacturing mistakes. Some manufacturing companies crave a physical prototype due to ergonomics in mind. No matter how good the model looks on the screen, i tin can't tell how it volition acquit once he or she handles the model.

Conclusion:

Most 3D modeling systems offers features that help manage the accuracy and completeness of second to 3D conversion. However, the stages of conversion seem to be a major concerns, if the extrude and Boolean operation is not used properly. Further, Manufacturers plan to add together 3D modeling to 2D drafting instead of replacing it. This is the main reason which calls for such conversion technique. Nevertheless if these technologies can arrange, conversion of 2D assembly drawing into a prepare to use 3D associates models, and so the technology growth would be at its peak and nigh companies would go into 3D engineering science, and the cost factor would drastically drop downward. This will encourage even mid-sized companies to wrap up second to 3D engineering and this trend would continue to abound among all verticals.

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Source: https://cadprofessor.wordpress.com/2009/01/30/transforming-a-2d-drawing-to-3d-cad-data/

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