To Modify Analytical Surfaces

2. Select a surface of a cylinder or cone or sphere or torus geometry. An Options Toolbar opens and draggers appear in the graphics window. Click

to see the Floating Dashboard.

3. Depending on your selection, the following appears:

◦ If you select a cylindrical surface, type a value in the Radius value box and press ENTER. Alternatively, pull the dragger to adjust the value.

◦ If you select a conical surface, type a value for the angle in the Angle value box and press ENTER. Alternatively, rotate the angular dragger to adjust the value.

◦ If you select a toroidal surface, type the following values corresponding to radii:

▪ Radius of the toroidal surface in the Radius 2 value box

4. Select the Maintain tangency check box to keep existing tangency between the modified geometry and directly adjacent surfaces. If Floating Dashboard is collapsed, click

• Use default conditions check box is available if Maintain tangency check box is selected. It is used to set system defined conditions for the selected and surrounding geometry.

• Click the arrow below Use default conditions check box to see conditions.

5. Do the following to assign system defined conditions:

a. Click the Condition collector (below Use default conditions check box) to activate it.

b. Select one or more surfaces, edges or vertices from the graphics window.

▪ Fixed with tangency: Fix a surface while maintaining tangency to neighbouring dragged surfaces or surface regions

▪ Fixed center: Fix the centre point of a sphere or a torus

▪ Fixed normal: Fix the normal direction of a planar surface

▪ Constant R1 : Keep the radius of revolution of a torus constant

▪ Constant R2: Keep the radius of the section of a torus constant

▪ Propagate through: Allow changes to a round surface and the neighbouring tangent surface to keep tangency

▪ Fix underlying edge: Fix a point on the underlying edge which has been rounded or chamfered

▪ Constant R: Keep the radius of a cylinder or sphere constant

6. Click Add to create a condition between the selected geometries.

Click Remove to remove a selected condition from the list of conditions.

Click Remove All to remove all the conditions from the list of conditions.

7. To reattach the modified geometry to the same solid or quilt surface where it was originally attached, selected in step 1, keep the Attach geometry check box selected. If Floating Dashboard is collapsed, click

When the Attach geometry check box is not selected, the resulting geometry is a quilt. The appearance of the original surfaces is propagated to both sides of the resulting quilt.

8. To store the attachment properties when you reattach the modified geometry to the model, select the Store attachment properties check box. Available when Attach geometry check box is not selected. Attachment properties specify how a selected modified geometry reconnects to the rest of the model.

9. To recreate rounds or chamfers if they were a part of the original geometry and the modified geometry is attached to the surface, keep the Recreate rounds and chamfers check box selected. Available when Attach geometry check box is selected.

10. To select a bounding edge reference:

11. To preview one or more geometric solutions, click

one or more times. Or select a pre calculated value from the adjacent list.

After computing several solutions if you move the geometry by dragging a handle, change the dragger reference, or modify the dimensions for the move operation, all the computed solutions are removed from the list. The new default solution is added to the list.