Showing posts with label detail. Show all posts
Showing posts with label detail. Show all posts

Thursday, 18 February 2016

One LOD To Rule Them All

NEVER use more than on LOD (Level of Detail) in the drawing, especially for large assemblies.


I see this problem ALL THE TIME, new or experienced users so, even if it’s not a proper blog I need to get this out… you all need to know, understand and remember this.

LOD is a memory tool not to be used in the drawings. Each LOD will load in to memory all the parts as if they were new parts even if they are just occurrences (duplicates).

Say you have an assembly of 1000 parts and you create a LOD where you suppress 1 element. If you use these two LOD’s on separate views in the same drawing then the number of occurrences will be 1000 + 999 = 1999 instead of 1000. Inventor treats each LOD as a separate assembly in the drawing!!!!



You will see a huge increase in size and you will impact performance severely.

Use Design View Representations to document different views and if you need to use LOD then have one per drawing (all sheets) like “All Content Center Suppressed” and differentiate the changes with Design View Representations.

                Now you can filter Parts List for “Design View Representation” and document a specific configuration on each Parts List but the Quantity will come from the full assembly (2017 has a fix on this).

                For now, to fix the quantity you need to look at iAssemblies. My notes on this here.

                Take a look at Large Assembly Instructions.pdf.

                You might want to suppress some of the views and turn them on when you need to work on them.

Now, repeat after me: “I swear to use only one LOD for each drawing, cross my hart and hope Inventor crashes if not”.


Later,

ADS



photo credit: Vanishing Point (license)

Thursday, 11 June 2015

Inventor Assembly Template

                There is a lot of info on the internet on how to setup your template files and many of you have already configured the drawing template, adding title blocks, borders and some symbols maybe. You have probably edited the part template and changed the default material but chances are that you haven’t altered your assembly template too much if at all.
                I am saying this because I see recurring questions popping out every once in while by frustrated people doing repetitive tasks that could have been avoided with a proper setup of their assembly template.
                One of the main things that will save a lot of frustration would be to setup a new design view representation as default instead of the locked “Master”. God knows how many times I’ve found Assemblies that cannot be saved because of the “Main design view is locked” error.



TIP: Instead of locating the template file and folder you can create a new file using New command and then save those changes in the template using Inventor (big I top left) / Save As / Save Copy As Template command.

                So open your standard.iam file template or fire up the new assembly command. Create a new design view representation, I call mine “Default” and set is as active. This will become the default view and hopefully if you don’t manually change it back to Master you should get over that pesky error on editing locked design views.
                The next one up is BOM. By default the Structured tab is disabled and every time you place a Parts List or edit the BOM you need to activate it. You then set it to All Levels, you may change the default delimiter and most certainly you will add and remove columns to suit your design needs.
So why don’t you go ahead and make these changes persistent in the template?


Depending on your design process and needs you might not use this but I recommend that you add Item QTY to your BOM. This will report the cumulated number of instances in the BOM. The default QTY will report the number of items as long as the item doesn’t have a length (G_L parameter) like structural sections, pipes, etc. in which case it will report cumulated length and not the number of items in the assembly.



                I feel better already, anything else?
                I use a lot of Content Center and Purchase Parts that are library read-only items and when doing large assemblies it’s hard to navigate the browser to find that part you want to edit. So what I like to do is add two folders called CC (Content Center) and PP (Purchased Parts) where I group the files to clean up the browser keeping just the normal parts. It makes a huge difference to be able to find something fast not to hunt and pick all the time. Also, you can now suppress hide or disable a whole folder at a time ;)



                Nice... what else?
                How about adding some virtual parts? This is where you get creative and to utilise the tip above you might want to add them to a folder called Virtual. It’s better to add as much you can think off and then delete them in the assembly later if not used. Creative? Like what? Stuff like oil, grease, man hour costs, machining costs, shipment, painting, etc. Remember that you have Estimated Cost on iproperties and virtual parts although exist in the assembly only they do have iproperties just like any other parts. You can even add a long descriptive text in the comments field. Do you need to add the Estimated Cost to BOM? How about Comments then?



                Keep going please!
                 Anything you need changing in the Document Settings? Maybe you want to change the default Lightning Style, maybe not but you might want to change the default dimension display to “Display as expression” to see the full equation driving that dimension. In here you can change the units as well as modelling precision. Verify all the tabs and make sure there’s nothing else that needs changing.

                Is this it?
                On the short list you might also consider:
·         Deactivating the Contact Solver in Inspect Tab
·         Parameters that you keep adding all the time like bounding box dimensions.
·         Link or embed some excel files
·         Add various iLogic Forms if needed
·         Add some iLogic code like one to prompt you to fill in iProperties at first save.
·         Turn on Center of Gravity
·         Etc.

I suggest that every time you find yourself changing settings in an assembly pause and think if this is something that might be saved in the template. If you do this for a week then you’ve probably got most of things but it’s a good exercise to do every once in a while especially with each new Inventor release.
               

Later,

ADS.

Friday, 14 November 2014

Tube and Pipe

I have been working long hours trying to get this Tube and Pipe video out and I just missed my deadline. One rule that impose myself was to do a post at least every week and it's usually published Thursday midnight.

There was no time for a proper blog on the all the info in the video but I will draw from it for the next couple of posts where I hope to add images and detailed explanations.

Because it's rather long I suspect some of you might get bored quite a lot but I recommend that you watch it over the lunch break just to see if there's anything new you can get from it.

Please send back your comments as well as best practices and other tips that you might have.