Technical Drawing кратко презентация

Drawings definition
Drawing ? graphic communication
A drawing is a graphic representation of an object (building, equipment, machine and etc.), or a part of it (unit, detail).
Drawings, photographs, slides, transparencies, and sketches are all forms of graphic communication.

Types of drawing
There are two basic types of drawings:
Artistic
Technical drawings
Artistic drawings are used to express the feelings, beliefs, philosophies, and ideas of the artist
Technical drawing is a means of clearly and concisely communicating all of the information to transform an idea into reality

Drawing equipment and tools
1) DRAWING PAPER is the sheet of paper, on which drawing is to be made.
The ISO most recommended paper sizes for technical drawings are known as
A-FORMATS

Drawing equipment and tools
2) TITLE BLOCK, BORDERS AND FRAMES
Russian Standard Title block (First sheet)

Drawing equipment and tools
2) TITLE BLOCK, BORDERS AND FRAMES
Russian Standard Title block (for subsequent sheets)

Drawing equipment and tools
2) BORDERS AND FRAMES, AND LAYOUT
Layout of sheet for engineering drawing
vertical
horizontal

Drawing equipment and tools
3) TOOLS: triangles (setsquares)
3) TOOLS: French curves
30°
60°
45°
45°

Drawing equipment and tools
3) TOOLS: Protractor
3) TOOLS: Scales (rulers)

Drawing equipment and tools
3) TOOLS: Pencil
Recommended size of the lead
is 8-10 mm
Recommended direction of drawing
From left to right
From bottom to top
Hardness of pencil

Drawing equipment and tools
3) TOOLS: Compass
3) TOOLS: Template

Lettering
4) LETTERING
Lettering used on technical drawing written according to Russian standard 2.304-81.
The height h of the capital letter is taken as the base of dimensioning.
The lettering may be inclined 75° to the horizon or may be vertical.

Lettering
4) LETTERING
The two standard ratios for d/h, 1/14 (Type A) and 1/10 (Type B), are most
economical as they result in a minimum number of line thickness.
TYPE A

Lettering
4) LETTERING
The two standard ratios for d/h, 1/14 (Type A) and 1/10 (Type B), are most
economical as they result in a minimum number of line thickness.
TYPE B

Lettering
4) LETTERING
Numerical symbols
TYPE B
TYPE A

Types of the lines on drawings

Technology Interactions
Computer-aided design uses computer systems to design products and create the drawings needed for the products to be manufactured.

Manual Drawing Vs CAD

What Is Computer-Aided Design?
CAD is the process of designing and drafting on a computer.
CAD is quicker and more accurate.

CAD Advantages
Saves time
Is more accurate
Improves team communications

The CAD System
Hardware
Input devices, such as a keyboard and mouse
Output devices, such as a monitor and a printer or plotter
Software
The computer is the main component. It has these subsystems:

Two-Dimensional (2D) CAD
Can show only two dimensions of an object:
Width and length
Width and height
Length and height
Frequently being replaced by systems that can do both 2D and 3D design.

Three-Dimensional (3D) CAD
Wireframe models resemble “stick figures.”

Three-Dimensional (3D) CAD
Surface models can look like the shape of the object.

Three-Dimensional (3D) CAD
Solid models show the shape, area, and volume of an object.

Using 3D CAD
Mechanical design
CAD/CAM
Rapid prototyping
Architectural design

CAD/CAM
This process combines computer-aided design and computer-aided manufacturing.

Rapid Prototyping
Uses CAD data to create physical models for communicating ideas or to test designs.

Introduction to
AutoCAD Engineering Drawings

Introduction to CAD
AutoCAD
One of the most well-known 2D CAD software developed by Autodesk
Widely be used to output construction drawings for civil engineering, architecture, and building services
AutoCAD2015 Free Trial

Engineering Drawing Created by AutoCAD

Architecture Drawing Created by AutoCAD

Starting AutoCAD
Start up > Autodesk > AutoCAD Mechanical 2015 > AutoCAD 2015
Auto CAD 2015

User Interface (AutoCAD classic)
Current File Name
Menu Bar
Toolbar
(Icon)
Layers
X, y, z coordinate system
Draw Toolbar
Status Bar
User Coordinate System (UCS)
Graphic
cursor
Drawing Area
(Graphic Window)

AutoCAD User Interface
Tabs
Click here to expand panel
Tooltip

AutoCAD User Interface
Length Dimension
Cursor
Current Input Field
Dynamic Prompt
Angle Dimension

Mouse Interface
Left button
Click the specific points and select pull down menu or graphic icon
(Selection)
Right button
Click to activate the right click menu
Middle button Scroll to zoom in or zoom out