Create wireframe geometry

CREATING WIREFRAME ELEMENTS

The wireframe construction elements aid in creating surfaces. The sketches drawn in sketcher workbench can also be used to create surfaces. The tools available for constructing the wireframe geometries are discussed in the following section.

Creating Circles

Menu: ------>Insert > Wireframe > Circle

Toolbar: --->Circle-Corne... >Circle

The Circle tool is used to create circular arcs and circles. Choose the Circle button from the Wireframe toolbar; the Circle Definition dialog box is displayed

The_circle_definitaion_dialog_box

The other tools such as Corner, Connect Curve were discussed in the earlier chapters

Creating Splines

Menu: Insert > Wireframe > Spline

Toolbar: Curve > Spline

The Spline tool is use to draw a spline in three dimensional space by selecting the connecting points. Choose the down arrow on the right of the Spline button to invoke the Curves toolbar.

Spline_helix

The Spline Definition dialog box displayed and you are prompted to select a point. You can select a predefined point or create a point using the options from the contextual menu, which will be displayed when you right-click in the Points selection area of the dialog box. Once you have selected a point, you are further prompted to select a point or a direction (line or plane) or a curve. You can choose a number of points to draw the spline.

In the Spline Definition dialog box, Geometry on Support check box is provided. On selecting this check box you are prompted to select a support element. Select a plane or a surface such that the point defined for spline creation lies on it. The spline thus created will lie completely on the defined support element. Choose OK button from the dialog box to complete the spline.

The_Spline_definitaion_dialog_box

Creating Helix

Menu......>	Insert > Wireframe > Helix
Toolbar:...>	Curve > Helix

The Helix tool is used to create a helical curve. When you invoke this tool, the Helix Curve Definition dialog box will be displayed,and you are prompted to select the helix starting point. Select a predefined point, or create a point using the options from the contextual

menu, which will be displayed when you rightclick on the Starting point selection area of the Helix Curve Definition dialog box. Next, you are prompted to select a line as the helix axis. Select a predefined line or draw a line using the options from the contextual menu, which will be displayed when you right-click in the Axis selection area. You can set the pitch, height, orientation, and start angle values in the respective spinners. You can also add a taper angle to the helix by specifying a value in the Taper Angle spinner available in the Radius variation area of the dialog box

The_Helix curve_definitaion_dialog_box

Helix_spring

1.The helix without specifying the taper Angle, 2.The helix with specified taper Angle.

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