Table of Contents
What is a source control drawings?
A source control drawing provides an engineering description, qualification requirements, and acceptance criteria for commercial items or vendor-developed items procurable from a specialized segment of industry, that provide the performance, installation, interchangeability, or other characteristics required for Jul 5, 2013.
What is a source controlled part?
The source control drawings call out a standard military part that is available from distributors. The source control drawings do not specify any modifications to these parts. They simply lift the part information from the mil spec.
What are control drawings?
A control drawing (sometimes called control art) is finalized artwork rendered as line drawings depicting the full design and engineering of a toy. Control drawings are also often used as the basis for color guides.
What is a procurement control drawing?
A class of drawing, some sub-types of which are identifying, that is used to purchase outside Engineered materiel or Engineering services. PCD types include Envelope Drawings, Source Control Drawings, and Vendor Item Control Drawings.
What are types of engineering drawing?
Introduction. One of the best ways to communicate one’s ideas is through some form of picture or drawing. Isometric Drawing. The representation of the object in figure 2 is called an isometric drawing. Orthographic or Multiview Drawing. Sectioning. Drawing Tools. “Assembly” Drawings. Cross-Sectional Views. Half-Sections.
How many types of lines are there in engineering drawing?
10 Different Types of Lines Used In Engineering Drawing. For general engineering drawings, the types of lines recommended by the Bureau of Indian Standards shown in table 2 must be used. The thickness of the lines must be chosen according to the type and size of the drawing from any of the six groups given in Table 1.
What is envelope drawing engineering?
A type of PCD used when the procuring authority wishes to stipulate certain design features without themselves completing the design. An ED is usually created as the first in a chain of drawings when some or all of the design Engineering effort is to be procured.
What are the 4 types of technical drawing?
There are many types of technical drawings, including: 3D drawings (isometric, perspective) • Exploded-view 3D drawings • Complete working drawings • Detail drawings (2D orthogonal projections) •Diagrams are another form of technical drawing with looser, less universal standards.
What are the 2 types of engineering drawing?
There are two basic types of drawings: Artistic and Technical drawings.
What are the basic components of engineering drawing?
For example, a mass-marketed product usually requires a much higher surface quality than, say, a component that goes inside industrial machinery. Line styles and types. Multiple views and projections. Scale. Showing dimensions. Sizes of drawings. Technical lettering. Title block. Revisions block.
What is RF in engineering drawing?
Explanation: Representative fraction is the ratio of the length of the object represented on drawing to the actual length of the object represented. So the representative factor is that dimension in drawing to actual dimension. R.F.
What are the 3 major line types that are used for technical drawings?
Using the Alphabet of Lines Construction Line. This line is used mainly in sketching, which is a freehand drawing technique. Visible Object line. This line is used to draw all the edges of the object. Hidden Object Line. Centre Line (or centreline) Extension Line. Dimension Line.
What are the 7 types of lines?
Points, Lines and Angles. Horizontal Lines. Vertical Lines. Parallel Lines. Perpendicular Lines. Some Other types of Lines in Maths.
What is E in tolerance?
“E” stands for “envelope,” and this symbol indicates that if a part conforming to size tolerance is within the envelope of perfect form, which has the maximum material size, the part passes this requirement.
What is envelope principle?
The envelope principle is the concept that the indicated toleranced size also controls the geometrical characteristics if the target is a feature of size. The indicated toleranced size also controls the geometrical characteristics for a feature of size. ASME also adopted the independence symbol in 2009.
What is product drawing?
Product sketching or Object drawing is essential for the representation of 3D objects. It is a 2D representation of a 3D object or objects for the purpose of communication of a designer’s visualization.
What are the 5 basic skills of drawing?
The five basic skills include the ability to recognize edges, understand the proportion, perspective of drawing, different colour schemes and putting the thought together. But in the entire process, practicing, again and again, is the main factor that will enhance your skill and bring a difference in the art form.
What are the 7 categories of technical drawing?
Sets of technical drawings In architecture, these include civil drawings, architectural drawings, structural drawings, mechanical systems drawings, electrical drawings, and plumbing drawings.
What are the different types of drawing instruments?
Instruments Used in Engineering Drawing Drawing sheet. Drawing board. Mini drafter. T square. Compass. Divider. Set squares. Clinograph.
What is Cabinet oblique drawing?
Cabinet Oblique – an oblique drawing where in the receding side is half the measurement of the actual size. In cabinet oblique drawings, the receding lines are shortened by one-half of their true length to compensate for distortion and to approximate more closely what the human eye would see.
What is the difference between engineering drawing and artistic drawing?
The main difference is; engineering drawing is designed for parts to be manufactured, but artistic drawings are just visual representation.
Is engineering drawing hard?
Engineering drawing may be about technical drawings but it is one of the toughest subjects, ask any engineering student and you will know. A sound knowledge of drawing is vital otherwise its a tough road ahead with the subject. It is an art because it involves a lot of drawing, that to complex form of drawing.
What are basic drawing conventions?
Two important conventions that go hand in hand are scaling and dimensioning. Dimensioning is the convention used for adding measurement notes, such as the length and breadth of the object, to a drawing. Dimensions include text, lines, extension lines and arrowheads.
What are drawing standards?
A set of working drawings is a set of drawings which contain all the information needed to manufacture a product. It includes information needed to fabricate each part, specify all standard components, and assemble the parts and standard components into the product.
What is the need of engineering drawing?
Typically, the purpose of an engineering drawing is to clearly and accurately capture all geometric features of a product or component so that a manufacturer or engineer can produce the required item.
