Computer Aided Design, or CAD is a special software, which is used to design a particular product, create its blue print. These days, the use of CAD has become very popular in the engineering fraternity, as it offer more accurate and precise drawings, which can be achieved putting in a very less amount of time. When it comes to engineering drawings, they consist of numerous details like lines, curves, points, different types of shapes and curves. What CAD does, is that it offers a detailed description of a component in its graphical form.
It has been more than 2000 years, ever since engineering drawing came into existence. However, it was in the 18thcentury, a French Mathematician; Gaspard Monge, who introduced the concept of orthographic projections.
The fact that visual objects speaks volume about the features and characteristics, the concept of engineering drawing have evolved over the years and has become an indispensible aspect in the engineering field. Earlier, engineering drawing were made using hands; which made the entire process very complicated and time consuming. There was a desperate need for a mechanism which would come with the combination of problem solving abilities, analytical tolls, graphical representation and organization. In engineering, objects are represented with the help of technical drawings, which are known as drafting. Drafting is used to represent specifications and designs of a data relationship and physical object. The fact that technical drawings are precise and are meant to communicate all kinds of information pertaining to the object in a clear manner, it is absolutely essential for it to be precise. This is where CAD has become so popular and useful.
Computer Aided Design, that’s what CAD stands for. The major benefits of using CAD is the fact that it facilitates the process of designing, developing and optimizing products. CAD is a very versatile application, and is being extensively used in the manufacturing sector as well as in the construction industries. With the help of CAD, it has become possible for the design engineers for form a layout and to create their work on a computer, take a print out of it and then use it for future reference. When it was introduced for the first time, CAD wasn’t the most popular of options, as it was very expensive, and some degree of technical knowledge was require to operate it; besides, it also had a few major drawbacks. However, with time as the software got modified, it came up with more user friendly and advanced features, which had enable the designers to create designs using accurate calculations, dimensions and other parameters.
The Use of Computer Aid Design
The primary use of CAD is to accomplish preliminary layouts and designs; along with different types of calculations and details. CAD helps in creating 3D models, creating drawings, releasing them. Besides, it also helps in the process of interfacing with marketing, analysis and manufacturing.
CAD plays a very important role in facilitating the process of manufacturing by transferring detail and relevant information about a particular product in an automated mechanism, which can be interpreted by trained personnel. CAD can be used to design both 2 and 3 dimensional designs. With the help of CAD, it is possible to view a particular design from any possible angle. It even possible to have a look at the model designed from inside, looking out at it. If you are wondering what are the different benefits which CAD has to offer, in that case, the following points might convince you
- As opposed to the manual methods of creating drawings, CAD offers an easier and convenient way of processing it
- Apart from creating detailed 3D and 2D models, CAD is used widely for creating different types of conceptual layouts and designs for different manufacturing components.
- CAD helps to reduce the design time by a great extent and allows precise simulation rather than test and build physical prototypes.
- Integrating CAM (Computer Aided Manufacturing) with CAD, helps to streamline the process of product development
Presently, CAD is used in the movie industry, for making animated films, different types of industrial products and applications. In order to take print outs from CAD, a special type of plotter or printer is required. CAD programs uses either raster graphics or vector-based graphics which would show how an object is going to look.
How can a CAD Software Helps you
A CAD software can help you in different ways. Here are some of them
- It helps to enhance the level of efficiency when it comes to design quality
- It helps to increase the productivity of the engineer
- CAD has also proven to be very useful in maintaining proper records through advanced means of communication and documentation
Given the fact that CAD offers so many different types of benefits and yields so much of utilities; it has become an indispensible part of almost all kinds of industries; including aerospace. The fact that CAD plays an major role in improving creativity and also speeds up the process of productivity; it is becoming increasingly more useful and a visualization tool, which can be used prior to the manufacturing process.
What are the Different Types of CAD Software?
CAD was first introduced in the 60s, and ever since, it has come leaps and bounds. CAD can be classified into the following categories
- 3D CAD
- 2D CAD
- Solid Modeling
- Surface Modeling and 3D Wireframe.
Over the years, the use of CAD has increased tremendously and today, it has become one of the most widely used applications as far as engineering designing is concerned. With the help of CAD, it has now become possible to create designs, which would have taken months otherwise. Whether it is designing of aero places, space crafts, buildings or any other kinds of structures, the use of CAD had made sure that even the most complex of designs can be attained within a very short span of time, and with optimum level of efficiency.
How to Create a CAD Drawing?
If you are a newbie, then you might find this section to be quite informative. It offers a brief insight on how to create a CAD drawing. Here are the steps which needs to be followed
- Open the program which is already installed in your computer
- Go to the “model space” section. This is basically the interface where you can create your designs
- The next thing you need to do is to set your units. You can choose either meters, feet, inches or any other unit which you would like to work with.
- Then you need to select the toolbar, which you would be using throughout the entire process of drawing
- The next thing you need to do, is to turn on the OSNAP feature. It refers to object snap and comes real handy while you are drawing. In order to ensure that you have you OSNAP settings on, you need to right click on the icon that reads as “OSNAP”. It would be located on the left hand corner of your screen.
This is how you get your software ready for drawing. The next thing you need to do is either create a fresh drawing or export and existing one. Refer to the online tutorials for more details on how to use CAD software
Aerospace CAD Drawing
As mentioned, CAD is a software which is extensively used in different types of manufacturing sectors. It is one of the most reliable applications to be used when it comes to drawing 2D and 3D models. The aerospace industry is no exception. As a matter of fact, the use if CAD is considered to be at its peak in this particular domain. Designing complex machines, aircraft models, minute details of spacecrafts, missiles and other components have become much easier with the help of CAD.
When it comes to the aerospace industry, special versions of CAD are used, which come with multiple different features. The fact that the aerospace industry, all over the world have been able to speed up their production process, owes a lot to the advanced and latest version of CAD software. CAD has played an instrumental role in the military aerospace sector. With latest simulators and 3D designing capabilities, CAD has become one of the indispensible tolls of the aerospace industry all over the world. Without CAD, the process would slow down considerably
CAD is one of the most widely used applications, when it comes to designing and drawing. New and latest versions of this software is being introduced regularly, which add more to its features and makes sure that an enhanced level of efficiency and accuracy could be achieved. CAD has made the entire process of designing and drawing of models very easy and has also played an instrumental role, when it comes to generating the desired result. It is one of the best options available in the market for getting professional designs with pin point accuracy, within a very short period of time.
Aerospace CAD Drawings to download:
Here is a quick list of some pretty interesting CAD drawing that are available to download:
Type15-3 Multirole FighterJet
.Atomics MQ-9 Reaper
Lockheed Martin F-22 Raptor on solidworks
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