Draw

Páginas: 22 (5385 palabras) Publicado: 11 de febrero de 2012
Engineering drawing

1

Engineering drawing
An engineering drawing, a type of technical drawing, is used to fully and clearly define requirements for engineered items. Engineering drawing (the activity) produces engineering drawings (the documents). More than just the drawing of pictures, it is also a language—a graphical language that communicates ideas and information from one mind toanother.[1] Most especially, it communicates all needed information from the engineer who designed a part to the workers who will make it.

Overview
Relationship to artistic drawing

Technical drawings

Engineering drawing and artistic drawing are both types of drawing, and either may be called simply "drawing" when the context is implicit. Engineering drawing shares some traits with artisticdrawing in that both create pictures. But whereas the purpose of artistic drawing is to convey emotion or artistic sensitivity in some way (subjective impressions), the purpose of engineering drawing is to convey information (objective facts).[1] One of the corollaries that follows from this fact is that, whereas anyone can appreciate artistic drawing (even if each viewer has his own uniqueappreciation), engineering drawing requires some training to understand (like any language); but there is also a high degree of objective commonality in the interpretation (also like other languages).[1] In fact, engineering drawing has evolved into a language that is more precise and unambiguous than natural languages; in this sense it is closer to a programming language in its communication ability.Engineering drawing uses an extensive set of conventions to convey information very precisely, with very little ambiguity.

Relationship to other technical drawing types
The process of producing engineering drawings, and the skill of producing them, is often referred to as technical drawing or drafting, although technical drawings are also required for disciplines that would not ordinarily bethought of as parts of engineering (such as architecture, landscaping, cabinet making, and garment-making).

Cascading of conventions by specialty
The various fields share many common conventions of drawing, while also having some field-specific conventions. For example, even within metalworking, there are some process-specific conventions to be learned—casting, machining, fabricating, andassembly all have some special drawing conventions, and within fabrication there is further division, including welding, riveting, pipefitting, and erecting. Each of these trades has some details that only specialists will have memorized.

Engineering drawing

2

Legal instruments
An engineering drawing is a legal document (that is, a legal instrument), because it communicates all the neededinformation about "what is wanted" to the people who will expend resources turning the idea into a reality. It is thus a part of a contract; the purchase order and the drawing together, as well as any ancillary documents (engineering change orders [ECOs], called-out specs), constitute the contract. Thus, if the resulting product is wrong, the worker or manufacturer are protected from liability as longas they have faithfully executed the instructions conveyed by the drawing. If those instructions were wrong, it is the fault of the engineer. Because manufacturing and construction are typically very expensive processes (involving large amounts of capital and payroll), the question of liability for errors has great legal implications as each party tries to blame the other and assign the wastedcost to the other's responsibility. This is the biggest reason why the conventions of engineering drawing have evolved over the decades toward a very precise, unambiguous state.

Standardization and disambiguation
In service of the goal of unambiguous communication (mentioned above), engineering drawings made professionally today are expected to follow certain well-known and widely followed...
Leer documento completo

Regístrate para leer el documento completo.

Estos documentos también te pueden resultar útiles

  • DRAW
  • Corel Draw
  • Corel draw
  • Corel draw
  • Corel Draw
  • Corel draw
  • corel draw
  • Corel Draw

Conviértase en miembro formal de Buenas Tareas

INSCRÍBETE - ES GRATIS