Part 1 - How to create a simple skeleton sketch driven assembly within Autodesk Inventor.

in this video I'm going to show how to create a very simple skeleton driven assembly I'm going to create a very simple belt guard I'm going to start by using a standard part and I'm going to give it a name that that is unique to the assembly but also denotes that it's a reference so I like to use like the abbreviation ref at the end where you could use skeleton or whatever else okay we're going to start in the same manner that we would create parts from sketches we're basically going to create just the sketches in this part font so I'm going to start by creating a sketch on this plane which is going to be the base of our Curt I'm going to rename the parameters as I create them Lex is going to make it easier for us to identify them when we move on to the next step which is creating parts from our skeleton okay so this defines our basic shape for our base of our belt guard okay I'm going to rename my sketches just keep them in order you can see that our parameters have been renamed as I was creating when you create some additional parameters because I'm going to create this as a sheet metal to create a thickness parameter I also created an additional parameter that's going to control the depth of our health care which I'll show you in a moment okay for our next component sketch I'm going to create a sketch on the same origin plane and I'm going to project geometry from the first sketch that I want to reuse and we'll shut off the visibility of the first sketch so I can see what I what I've taken create construction geometry out of the part that I want to modify basically want to put a rip in this particular component I'm going to use the contour flange tool to create the sides of this filter so I want to put a rip in it so that will actually have stop and a start to our our contour flange shut off the visibility of my side for the time being okay now going to create a plane from our origin plane and offset at the distance that we specify for air depth now we're going to create a sketch which is going to be our top of our bail card again I'm going to project geometry from our previously used sketch and I want to create a vent hole in the cover as well so I'm just going to offset the outside and create a parameter to derive that distance I'm going to create another sketch on the same plane and this will be the material for the screen itself again I'm going to project geometry of the vent hole created I'm going to offset create the vent geometry as construction lines so that it doesn't doesn't pans don't get confuse with them and create a parameter for the lap of the screen inside the case now the last thing that I want to create is I want to create some tabs that will be created in the base part that will allow it to fit inside the side and have a couple of holes so that it could be fastened together so to start this by creating a plane between these two lines and line with the side and we'll create a new sketch here I'm going to project the tangency that's where I'm going to lock my tabs into I'm going to create these tabs and as I do I'm going to create a parameter on the first dimension to drive the size and I'm going to use the equal constraint to drive the side of the rest of the tabs from that one dimension create a hole the center of the tab make sure it's centered on our tab make the same hole on the other tab making them equal and again maintaining Center constraints you see we have all of our parameters that we should need in order to create this geometry make sure the save our reference sketch and now we can begin creating geometry now to create geometry I'm going to use a standard part template not the sheet now even though I'm going to make these components at a sheet metal I want to start with the standard part template the reason for it is when I derive our referencing to it I want it to pull in that thickness parameter and then when I convert it to a sheet metal it will use it without any issue so I'm going to drive pick our reference I'm going to select from our list the sketches involved with this particular component which we're starting with the base take the base sketch I'm going to take the tabs because I want those also in a sketch in addition to that I'm going to pull our thickness parameter I'm now going to convert it to sheet metal gives you the message saying that any uniform thickness should be equal to the parameter thickness which in our case our thickness parameter is now being used and you can see that the thickness parameter is being driven by the default sheet now rule I'm now going to create geometry so I'll create a face based on our first sketch and I'll create tabs I'm going to create them inward so that they do not conflict with our sides and I'm going to mimic those tabs on the other side of the part as well save heart now I'm going to continue to create the rest of the parts in a similar fashion okay now that I've created the rest of my components I'm now going to assemble them into an assembly start with an assembly file and I'm going to place all of my components into the assembly including my reference okay I'm going to use the command ground and root component in order to automatically grab all of the components to the origin basically the skeleton sketch will drive the positions of each of the components all the components are fixed in place relative to their position in the reference sketches I'll save the assembly I will change the occurrence the bill material structure from default to reference for our reference sketch so that our parts list and build material will not take into it into account now we can then simply modify any of the parameters in our skeleton in order to drive the shape of our Gert excuse me to return our pump card our Bell card updates my second video I will show how we can add simple iya logic rules in order to drive the values in our reference sketch from the 770 through a dialog box

Channel: Jason Cameron

Views: 41,725

Keywords: Autodesk inventor, Skeletal Modeling

Id: _G2C3fI1Qc0

Length: 16min 43sec (1003 seconds)

Published: Tue Jun 04 2013