What is a cavity?
In Design Engineering a cavity is the area or shape created after the removal of material from the body. The cavity is a vacant volume in the body. This vacant volume can be used or left as it is. In modern days or we save from past decades we are seeing many products which are having a cavity. Those products are used to store small items.
We also see the cavity is designed according to the shape of the product which is going to be kept in it. We see many examples of such in a Mobile phone box, Earbuds charging case, Egg tray, etc. The cavity in these items is designed according to the product in existence or which is going to fit in it.
The cavity is designed in two ways and the purpose is also different. The first one is when this cavity is used as a mold and different shapes are created. By filling the material in this cavity and then removing it for the mold. The second is designing the casing or outer shell of the thing or product. Which is created by first taking the dimensions and measurements of the product and then creating it on the CAD software.
Creating an outer shell or casing is a bit challenging. As the shell needs to be created first then the material needs to be removed from the solid shell. This can generally take time and tiring. To decrease the fatigue and time consumption in designing software are having this feature. This feature lets the designer create the cavity within a few clicks. This method is very accurate and can be used for any shape or design making sure the shape is removable.
Designing Cavity in SolidWorks
The cavity feature creates a cavity of the tool body on the present body. This feature can also be used in part mode as well as in assembly mode.
First, you have to open the blocks (top and bottom shell) into the assembly mode. Then open the tool body or part for which we are going to create the cavity. Make the basic mates between the parts in which way they are going to be assembled. For explaining in this article we will create the cavity on the bottom block. In the same way, we can create the cavity on the top shell.
After arranging the tool and block. Right-click on the block from the property manager and select the editing part. As the cavity is going to be created on the block. The part tools will be available to make any modification or edit.
Now we have to select the Cavity feature by going to Insert > Features > cavity.
Once we have selected the cavity tool in property manager we have to select the tool body. Under Design Component select the tool body.
We get an option under Scale Parameters, Option is scale about and the percent of scaling. Moreover, we can select any one option available under scale about and then click OK. Then exit the edit component and hide the tool part. You will see the cavity is created according to the tool body.
The cavity is created which is more accurate and less time-consuming.