Direct Distance Entry Method In AutoCAD

  

  Direct distance entry is one of those Auto CAD features that enable you to draw an object,

  Such as a line, by pointing in a particular direction with the mouse pointer and entering a    distance at the command line. Before drawing in direct distance entry method, make sure  that you have set Ortho (locking your input to vertical and horizontal). by pressing the F8  button and checking to see that the "Ortho" button is depressed on the status bar like this:  Ortho is on Your F8 key will toggle Ortho on and off.

   

Relative Polar Co-ordinate Method In AutoCAD

 Polar coordinates specify a point’s exact location by a distance and angle from the last

 point that was entered. The distance is always positive and the angle is measured from the

 positive X axis.

 For example, typing @4<45 tells AutoCAD to locate a point that is four units away from

 the current location and at an angle of 45 degrees from the horizontal.

 Assignment 

Complete the below drawings using Relative polar co-ordinate method.

                                              

Relative Rectangular co-ordinate Method in Autocad

   Relative Rectangular Method: (@X,Y)

  Relative Cartesian coordinates specify a point’s exact distance from the last point that was   entered. For example, typing @5,2 tells AutoCAD to locate a point that is five X units and     two Y units away from the last point entered. The X and Y relative coordinates are signed     numbers.

  

  Assignment 

  Complete the below drawings using Relative rectangular co-ordinate method.

                              

 

          

Creating Drawings using Absolute Co-Ordinate Systems In AutoCAD

   

  Absolute Method: (X,Y)

  Absolute Cartesian coordinates specify a point’s exact distance from the origin point of

  the coordinate system, which is represented as (0,0). The absolute X and Y coordinate

  are signed numbers.For Example how to create beow drawings using this method.

  
Assignment No

Complete the below drawings using absolute co-ordinate method.

 (a)

(b)

Basic Commands for drawing and modifying the drawing

1. LINE

 Command:  L ↵

 The first command we will look at drawing straight lines. Each line has a beginning and an           ending point and the program wants you to specify the beginning point of the line. You enter the beginning point by either typing the point coordinates at the keyboard or by clicking the mouse on a location of the screen where you want the line to begin.

2.ERASE

Command: E↵

This removes a selected group of entities, which may be entered before or after the command itself is entered.

3.Redo: 

Command: Ctrl+y

This command is used immediately after an error to redo what was undone

4.Undo:

Command: Ctrl+z

It is able to undo several commands at once, allows the user to set mark points and later undo back to those points, and to group operations together and undo them simultaneously.

5.Grid: Command: F7

This command sets up a visible grid of white dots that is used for referencing purposes.

Generalized Design Process

-         Customer Order

-         Problem Definition(Initial Design)

-         Geometric Modeling

-         Engineering Analysis

-         Design Evaluation

-         Production And Marketing