Courses Covered:
- Architectural Drafting
- Mechanical Shop Drawings
- Survey Drafting
Mechanical Drawing is an important art and craft in the today’s mechanized world. So much so that it would be difficult to over estimate its importance. Without it, civilized life as know it now would very quickly come to a standstill. In this electronic and mechanical age, it has become indispensable as part of our industrialized system. It has the position, apart from its connection with theoretical mechanics, as a necessary feature in our economic production. Indirect or made by memory production methods are no longer commercially feasible. Every important piece of machinery or fixture or begins on paper or in a CAD program, and the accuracy and completeness of what a drawing shows of a mechanism depends on the craft of mechanical drafting.
A good mechanical drawing is in itself a powerful aide in design. In addition to its main goal as an accurate depiction of the ideas of the designer, it also is a practical test of the practicality of the functions of the parts drawn. A large part of ordinary machine design, where rigidity and practicality are what you want to end up with, is produced by the showing of the drawing (object) only. No complex mechanism can be designed and produced with complete accuracy without the help of a top notch mechanical drawing.
Scale drawings, while mainly intended for producing representations of structures in readable sizes for drawing, handling and storing, are also necessary to the properly proportioned design of all objects that if drawn in their natural size, are too large or too small to be completely seen by the naked eye. This is especially true where there is little or no graphic information for mathematical calculations.
The information needed for mechanical production demands an accurate drawing, displayed and explained by understandable and uniform methods, which are common knowledge to all who deal with the subject’s construction. Collectively, these constitute an important and invaluable skill, apart from any connection with abstract science, a skill which has to be acquired by plenty of work, care and diligence. This is most readily accomplished by making it a separate study in the early stages of drafting training; and that period is most needed, also, because this kind of skill is a powerful help to the progress of every other branch of vocational training or study that is involved in this type of work.
It should also be noted that, although special aptitude to draw is always a valuable asset, it is not a substitute for the necessity of studying and practicing drafting conventions, and that it is really necessary to go through a good training course in this field.
The author, Tim Davis, has built a very complete course in Mechanical Drafting at http://draftingservice.us/m101.
Taking a course in mechanical drafting is not one of the easiest endeavors. A student needs to develop a discipline over the way he or she looks at things. They also need to develop a constructive way of thinking so that the student can think in a mechanical way. Not only this but they need to be trained to be able to communicate graphically so that the intentions of an idea, process, or item are understood without question in a fabrication or machine shop.
Mathematics are a major part of the learning process. In this field of drafting, some of those math classes you took in high school will actually seem like a necessary skill to have once you start your studies. Calculations of material stresses and deflection, calculations of material density and volume, sheering, load tables, etc. are only a few of the things a student will have to learn.
The student has to get a working knowledge of the fundamental operations and conventions of mechanical drawings from lettering and calculations, to the lay out of the work and so on in order that the completed sheet or sheets of drawings reflect a well arranged and clearly executed finished drawing. In the making of working drawings, it is often very difficult for the novice because of its conventional character of the work.
In today's engineering drafting offices, the student will need to be able to work on a CAD system. CAD is short for Computer Aided Drafting. In other words, it is a drafting board in a computer. And before a CAD system is learned it is always best to learn how to draw on a drafting board. Manual drafting may be a disappearing discipline but in my mind as a teacher it is indispensable.
As I said, it isn't the easiest career to learn. But like anything you have to learn to do, once you get past the basics it can become second nature to you. It is a high paying however and good pay means a more comfortable life. With enough determination, you too can do it. I did...
My name is Tim Davis and I draw architectural and mechanical plans for a living. I also teach others how to draw house plans, site plans, mechanical and shop drawings and other types of drafting that I have been trained to do in a virtual classroom on the internet called Drafting 101 at http://drafting101.com/