Basic Solid Modelling. Solids can be created as Primitives, from Wireframe and as the result of a Solid operation on another solid, страница 2

·  Blank the cavity solid and switch on level 5.

·  Select the Z principal plane.

·  Create a surface primitive plane at 0, width 80, length 120.

This surface does not need to be turned into a solid for the split command.

·  Make the handle solid Active

·  Select the plane and from the Features menu, select solid split

·  Delete the upper half of the handle

The solid has been split in half. If you shade the model you can see it more clearly.

·  Create a composite curve around the top edge of the handle.

·  Open the Edits toolbar and Project the curve to Z 0   

·  Make a solid extrusion 15mm up Z.

·  Add the extrusion to the handle.

By projecting the curve onto Z0, it adjusts any tolerance errors when tracing the composite curve.

The extrusion can then be added

·  Create a solid block at 0 0 15, length 60, width 130, height 20.

·  Add the two solids together.

·  Rename the solid as Cavity_Electrode.

·  Put the new solid, on level 5 and switch the level off.

A new insert can now be made.

·  Select Unblank and Activate the Cavity solid.

·  Select Principal Plane along Y.

·  Create a Solid Cylinder at 4.0 –52.0 -3.0 Radius 2.0 length 5.0

·  Select the solid cylinder and Add it to the active solid.

The solid now has an internal protrusion. A workplane is going to be created at the end of this protrusion to assist with the creation.

 

·  Create a WorkPlane between these 2 points

Hint, create a line between the two points and then you can snap to the mid-point.

·  Select Principal Plane along Z and Lock the plane

·  Select a view down the Z axis

·  Sketch the shape of the loose piece or slide around the cylinder as shown.

·  Make a composite curve from the lines.

·  Unlock the plane

·  Select the wireframe and create a Solid Extrusion.

·  Double click over the solid extrusion

·  Enter a Negative length of 30, Draft angle 2 and Length 0

·  Select Accept

The extrusion is the right size and shape.

·  Make sure the main Die insert solid is the active solid.

·  In the Feature Tree area expand all the +symbols so the full history of the active solid can be seen working from the bottom upwards

·  Select the solid extrusion and Split active with selected solid.

This is a warning to let you know that any associative features will be removed (the history will be lost).

·  Click OK

Most solid operations are associative so the Solid history can be kept and updated but this particular operation divides the solid into 2 separate entities as shown.

The History has been lost for the Die insert so it might be useful to undo this operation and create a copy of the original solid for reference/modification purposes.

Burglar Alarm Box Example

·  Open a new model

·  Create a workplane at 0 and rename it Datum.

·  Generate a rectangle from  -125 –150 with a size of X 250, Y 300.

·  Change the rectangle into a composite curve.

·  Generate a solid extrusion up the Z-axis using the Solid extrusion icon.

·  Change the extrusion length to 130 and Draft Angle to 340 and Accept.

This has formed the basic shape of the Alarm Box.

The features can now be added.

·  Generate a rectangle from -60 –80 130 with a size of X 120, Y 160.