According to the meaning of the words , there are two kinds of spiral springs . In terms of Figure Mechanical Engineering expertise often times people use a rotation of sorts that ends in - line screw .
It is also called spring screws . Spring - spiral , in which all the spins lie in the field , is widely used in a watch factory .
Divide people into two kinds of springs , namely
a. tensile springs and
b . spring press .
Shapes and sizes spring springs often found on how to use his ¬ and , given the measures that need to be
Sometimes all sizes and clues collected into one list , which is placed next to a spring.
Lo = length of which is not withdrawn , the length of the spring in a state , where
no external power to work .
D = diameter round is
. d = is thick whorls .
To draw a 3 -dimensional spring in AUTO CAD Program primarily on AUTO CAD version 2007 and above there are two steps that must be done
gambit
In the first step aims to form a helix , which became the basis of the spring
1 . Type the helix in the command window ,
2 . Determine the center point of the spring by clicking on the cross hair in the work area AUTO CAD
3 . Determining the value of the diameter or radius in the upper surface of the spring as an example in this case 150 units 1 unit = 1 mm
4 . Determining the value of the diameter or radius of the surface of the spring at the bottom as an example in this case 150 units 1 unit = 1 mm
5 . In the command window in the Option Specify helix height or [ Axis endpoint / Turns / turn Height / Twist ] < 250.0000 > : turn , turn type or value type T and then enter the number of whorls as my example input value and then enter 10
6 . In the command window in the Option Specify helix height or [ Axis endpoint / Turns / turn Height / Twist ] < 250.0000 > : Enter the numbers as high as an example of whorls I and enter the input value of 250
helix model image as the basis for drawing spring
Below is the window is AUTO CAD Text
Customization file loaded successfully . Customization Group : EXPRESS
Regenerating the model .
AutoCAD Express Tools Copyright © 2002-2004 Autodesk , Inc. .
; Error : bad character read ( octal ) : 0
AutoCAD menu utilities loaded . ; Error : bad character read ( octal ) : 0
Command : commandline
Command : helix
Number of turns = 3.0000 Twist = CCW
Specify center point of base :
Specify base radius or [ Diameter ] < 1.0000 > : r
Point or option keyword required .
Specify base radius or [ Diameter ] < 1.0000 > : 150
Specify top radius or [ Diameter ] < 150.0000 > : 150
Specify helix height or [ Axis endpoint / Turns / turn Height / Twist ] < 1.0000 > : TURN
Enter number of turns < 3.0000 > : 10
Specify helix height or [ Axis endpoint / Turns / turn Height / Twist ] < 1.0000 > : 250
command :
command :
Command : _ - view Enter an option
[ ? / Delete / Orthographic / Restore / Save / Settings / Window ] : Regenerating _swiso models .
The second step
In the second step aims to thicken thread
The trick is
1 . Move the view to isometris , click view on the standard tool bar , click on the sub 3Dview standard tool bar click SE isometris
2 . UCS at the command window and then click enter, the option Specify origin of UCS or [ Face / named / object / Previous / View / World / X / Y / Z / Zaxis ]
3 . <World> : Type the letter Y then enter, the option Specify rotation angle about Y axis < 90 > : click enter
4 . Make a circle with a radius of 12
5 . Move and stick it on the end of the spring
6 . SWEEP Type in the option Select objects to sweep : click on the circle
7 . the option Select sweep path or [ Alignment / Base point / Scale / Twist ] : click on the screw on the spring
spring picture in 3 dimensions
Below is the window AUTO CAD Text is :
Command : UCS
Current ucs name : * WORLD *
Specify origin of UCS or [ Face / named / object / Previous / View / World / X / Y / Z / Zaxis ]
<World> : Y
Specify rotation angle about Y axis < 90 > :
command :
command :
Command : _circle Specify center point for circle or [ 3P/2P/Ttr ( tan tan
radius ) ] :
Specify radius of circle or [ Diameter ] < 209.5667 > : 12
Command : SWEEP
Current wire frame density : ISOLINES = 4
Select objects to sweep : 1 found
Select objects to sweep :
Select sweep path or [ Alignment / Base point / Scale / Twist ] :
command :
command :
Command : _vscurrent
Enter an option [ 2dwireframe/3dwireframe/3dHidden/Realistic/Conceptual/Other ]
< 2dwireframe > : _c
Command : ' _textscr
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