Fastening features in SolidWorks

Fastening features in SolidWorks streamline creation of common features for plastic and sheet metal parts. A fastener is a hardware device that mechanically joins or affixes two or more objects together. Fasteners can also be used to close a container such as a bag, a box, or an envelope; or they may involve keeping together the sides of an opening of flexible material, attaching a lid to a container, etc. to create this feature in your assembly, fastening features are used.
There are different types of fastening features available in SolidWorks.


TIP: lip and groove feature in fastening was added to solidworks after SolidWorks 2009.


Different types of fastening features with their use :
Mounting bosses  – Create a variety of mounting bosses. Set the number of fins and choose a hole or a pin.
Snap hooks and snap hook grooves – Customize the snap hook and snap hook groove. You must first create a snap hook before you can create a snap hook groove.
Vents – Create a variety of vents using a sketch you create. Set the number of ribs and spars. Flow area is calculated automatically.
Lips and Grooves – Align, mate, and hold together two plastic parts. Lip and groove features support multibodies and assemblies.
You can create a lip and groove feature when the interface between the lip and groove contains multiple faces, for example, for a mouse hole or a gap in the parting line.


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In this, we will talk about lip and groove feature.


We will use this assembly to demonstrate the use of lip and groove in fastening features.


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Remember that fastening feature does not work without edit mode.


As we are in assembly right now therefore edit the bottom part to enter into edit mode.


To edit, right click on the bottom part click on edit part.


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To use fastening feature, go to features-> fastening features-> lip and groove.


This will open up the property manager for lip and groove feature.


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Note that lip and groove’s property manager is a little different from other feature’s property manager.


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In this property manager as you keep selecting the parts, more options will be visible.


Select the groove as the bottom part.


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Make sure that ‘show preview’ box is checked.


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Select the inner edge of the bottom part as the grove edge, after seeing the preview, we can see that groove has been made.


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           Yellow curves represent the groove made


“Lip and groove” is also known as “tongue and groove”.


In fabrication lip and groove is made because: Tongue and groove is a method of fitting similar objects together, edge to edge, used mainly with wood, in flooring, parquetry, paneling, and similar constructions. Tongue and groove joints allow two flat pieces to be joined strongly together to make a single flat surface. Before plywood became common, tongue and groove boards were also used for sheathing buildings and to construct concrete formwork.


Each piece has a slot (the groove) cut all along one edge, and a thin, deep ridge (the tongue) on the opposite edge. The tongue projects a little less than the depth of the groove. Two or more pieces thus fit together closely. The joint is not normally glued, as shrinkage would then pull the tongue off.


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As we have selected the groove. Next, we will select the upper part as the lip.


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As we selected the inner edge as the groove, ensure that inner edge is selected as the lip too, to make them coincide.
Then set the parameters for lip and groove.
Make sure that link matched values is checked.
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lip and groove feature has been applied to the assembly.
To confirm it, click on cross-sectional view.
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