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A basic explanation on Helix Command
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Feature Based Solids Modeling - MicroStation
A basic explanation on Helix Command
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A basic explanation on Helix Command
Product(s):
MicroStation
Version(s):
N\A
Environment:
N\A
Area:
Feature Based Solids Modeling
Subarea:
N\A
As you enter the command, you can see some possible adjustments.
Thread ->
direction of helix (Right, Left)
Pitch ->
if the pitch will be equal in the entire Helix or not (Constant, Varying)
Height -> height of the helix
Top Radius -> The radius of the top part of Helix
Botton Radius -> the radius of the lower part of the helix
Helical Pitch -> interval for each of the helix turns
Cell -> Will select a cell to be the base for the Helix
Keep Profile -> weather or not you want to keep the profile used to create the Helix
Create a small circle as your profile. Record the diameter that you enter.
Put the circle perpendicular to the view to facilitate.
Now Select Helix Feature command
Select the circle from its center. Move to your right or left to determine the botton Radius of your helix and click were you want it.
Move towards the bottom to define the pitch value for the helix. Click were you see fit.
Note: The pitch value has to be bigger than the diameter of the circle used on profile.
Determine the height of the helix, by moving down with the mouse. See that the helix is starting to get a shape.
Move sideways to determine the other radius of the helix. Click were you see fit.
You can see the format of the helix. Click on the view to create it.
See the helix created.
One example using the Create Helix Feature to create a screw for a bolt:
Create a cylinder.
Make sure to record the height and radius values entered.
Create a small circle as your profile, record the diameter that you enter.
Put the circle perpendicular to the cylinder.
Now Select Helix Feature command
Define the profile as base for your screw, and remember the values for the cylinder.
The Helical Pitch
has to be bigger
than the value you put for the diameter of your profile.
Then, generate the helix based upon your cylinder profile, the initial and final radius.
Or you can select the initial and final radius. It will be following your mouse.
Select the profile by its center
Move towards the center of the cylinder and select it as the top radius. As you move downwards, you will see a profile of the helix being created
After you select the bottom part, in its center, click again to start the helix
Click away from the area to accept its position.
To create the final part, subtract the helix from the cylinder to see the crew.
See the final element.
See Also
Original Author:
Fernando Moreira