step 1. :
helix in command line
specify the center point of base of the spring your going to draw
specify the base radius or Diameter of the spring
specify the top radius of spring.. it'll same value unless your spring is of conical shape
specify height of the spring
to see the spring you have drawn in isometric views.. type 3d orbit
and enter.. or click the icon showing 3d orbit...
now rotate the drawing with help of your mouse..
now change the view of figure,if you have started to draw the spring in top view then change to front view...
or according to the view you've started to draw... final view should be like as shown in fig.
Now rotate the model slightly... so that you are comfortable to draw a circle over the edge of 2dspring.. (check fig.)
draw a circle of required pitch you wanted.. using command C or circle or clicking the icon..
now type command SWEEP and then select the circle (for Object to sweep)..
select the helix or spring for the sweep path...
After doing it... you can see the spring as 3d wireframe like the one shown below...
to see the 3D SPRING in shaded view.. type SHADE in command box and enter.. you will get the 3d spring.. :)
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~~credit to http://1000autocadtricks.blogspot.com..~~
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dapat digunakan untuk projek baru