Fusion 360 - FINALLY! Tolerances and Clearances in Fusion -Your Comments & Questions -
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- เผยแพร่เมื่อ 28 ก.ย. 2024
- Live Stream - Might be most asked Question- How do you define tolerances and clearances with Fusion?. This is Fusion 360 AND we will chat about your comments and questions.
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What about when you're doing 3D Printing? Is there a way to specify tolerances when you're generating the STL? It would be very handy to have the STLs take into account component contact
ATMakers I hoped that he would have covered that topic too. Maybe in part 2.😃
ATMakers Indeed, the inner lid should be smaller in the 3d design and not only within the descriptive drawing. To my knowledge conversion to STL only uses the 3d model
I came back to this again and forgot it does not cover if you are 3D printing the parts. You need to design in the clearances in the 3D parts, but I know each 3D printer can change the size. That can eve change if the part is small or large. I hate printing a test but that is the only way I know how to work it.
I guess you could just use parameters for that. Instead of typing the regular value for the critical dimensions, use a formula which takes into consideration the tolerances.
You can use press pull or offset faces or design it with an offset in the sketch.
Great video! I would be very interested in hearing how and when you address joint clearances when moving from CAD to CAM in fusion to CNC mill wood? Is it easier to set this in the modeling environment or in the CAM environment? I have yet to find a tutorial that addresses issue with wood joints. As you explained, nominally designed joints are going to be too tight and will not go together, especially with glue on them. Thank you!
Quick how to: Double click on the dimension in the drawing, add tolerances there. Just thought I'd put that out there for other engineers who are making a Fusion 360 drawing for the first time and are looking for how you add in tolerances, but don't need an explanation of tolerances in general. Maybe that was obvious to others, but it wasn't to me. Thanks for the video!
I started Fusion because of your videos and really enjoy it. Thanks!
can't model nominally for 3d printed things. I just made a part with a slot and a tab and they do not fit when printed. I have to build the clearance into the slot or the tab. Unfortunately I discovered it after printing the part for 16 hours (
Lars is there a plan to add the ability to assign tolerance to the model as an attribute so that the tolerance would come across automatically in the 2d drawing? Even better would be the ability to use the attributes to for a tolerance stack analysis.
Honestly, I don't know what the development team has up their sleeve until a week before release :-) I would love to see a cool tolerance stack analysis tool though.
Have an awesome day!
The project method, excellent. I’m learning. I’m learning. Keep going.
That is awesome to hear Kevin Duquette .Thank you for watching the videos
20 minutes in and I still don't know how to make the lid a specified ammount smaller than the box, so when I 3d print it, it will fit.
He already said it's for manufacturing. You don't change the fit and clearance in the model, you specify it in the drawing. For 3D-Printing its different.
But here's some info for your case:
Pressfit = -0.15; Revolute fit=-0.2; Sliding fit= -0.25
@@aloexkborn Each 3D printer needs different values if you want high quality so you really need support for easily changing these. Sadly, Fusion 360 doesn't seem to support any generic way to do this.
The only problem I have with this guy is that it takes forever to get to the point. Over 9 minutes in before he gets to Clearance and tolerances.
Hi LexMexNow Thank you for watching!
I know. I need to be better at getting to the point
Hope you have an awesome day
I found the Video very helpfull
I know what your saying but the un-rushed approach really helps me follow along.
I would have made the 3D model in the middle of the tolerance, because 3D printing and machining use the 3D model for generating toolpaths, and rather used the nominal values on the drawing ,and defined tolerance on the drawing as well.
Is "Drawing" just a notation.... OR does it ACTUALLY effect the 3D model dynamically with tolerances?
If you use fusion to create the gcode for a cnc using the "perfect" dimension of the design, would you have problems? if you do what are the options to fix the problem before actually machining.
I have always cam’ed to perfect dimension on CAD model and then uses cutter comp on the machine to dial in within tolerances
I really don't get this. I get the drawings that's just drafting 101. Clearances and tolerances are needed to cam a part that actually will work. In a cnc environment is a drawing then a recad for cam standard? That seems like a lot of wasted effort and doesn't match what I saw while doing IT consulting in a cad shop. A lot of what they did drawings were never produced it went from cad to cam to machines to finished part.
I usually use the "Stock to Leave" to define clearances. You can use Negative stock to leave to define clearances. I'm just a NOOB so I don't know if this is the best way, but it works for me.
storm strmrdr & Ray Manzi go check out the tolerances and probing webinar I did on the Autodesk HSM TH-cam channel.
Good Webinar. Although I think Lars can polish it up a bit in Fusion. I found it hard to find the items that you selected in HSM and follow along in Fusion. FYI, the 27 minute Bio in the beginning wasn't necessary. 5 min Max Please......
Ray Manzi yeah. The bio got out of hand because there were two of us... And it's actually something Autodesk asks us to do... And the reason you're struggling to find those commands in Fusion is because as I point out in the webinar, they don't exist. You can't do model based tolerancing in Fusion... Or Solidworks for that matter without making the nominal parameter value the toleranced one.
I thought of using variables for clearance. For example diameter = 2.5 -slipfit1. That way if I needed to adjust it all I did was change the variable. Is it possible in fusion to import a table of variables into a project or have a standard set that is inserted into every new project so you don't have to add them one at a time?
Haha What are the odds. Aug. 4th Barak Obama Birthday.
Lars - I think what all of the 3D makers would find VERY helpful, is how to do an interference between two parts, specifying a tolerance, so that it would show any material that interferes with at least that amount, rather than just zero, and then how to remove that interfering amount. Could it be done with an outward facing shell or some other technique? I have been struggling with this, and have come up with no solution yet. But you're the master. Any ideas?
Can you give me an example of what these two components could be? I have only had half a cup of coffee and my brain is not fully running yet.
Lars Christensen for example your box and lid. We would want to remove all the material that was in red on your interference analysis, plus the additional material if the lid was millimeters larger on any face that contacts the box.
@@cdeerinck maybe this could be done by cutting the clearence areas using surfaces that are thickened based on a parameter?
Quote of the day "somebody is going to come to the party with a chainsaw..." #LarsChristensen :)
lol....Thank you!! I think I need that on a T-shirt :-)
Have an awesome day!
Dorian Buck that's America for you ☺
Hi Lars! Great tutorials, thanks for doing that! Question... I know it makes sense to design with nominal values and later on add the tolerances in 2D drawings but how are you getting on with this if you want to 3D print a prototype of what you have just designed? I just finished a mechanism in Fusion360, printed 3D and am ready to do 2D drawings. Now all the mess starts. Is there any simple way of doing it?
Great Video! I would love to see a video dedicated to explaining in detail every command in the drawing feature and how they are typically used in industry.
Thank you so much Bill Rockmaker ! I have the drawing topic on my future list of topics. Thank you for watching the videos
WTF?
It gets really fun with GD&T.
Hi Lars, thanks for the video. Is it possible to change the position of the deviation. IE on top or bottom of the measurement instead of to the right? Also is it possible to add a sectional view from the 3D model in the 2D drawing?
Cheers,
E.
Is there a was to generate a dynamic clearance surface in Fusion 360? For example, a surface that would represents the space to room that front wheel may need to have clear in order to complete it's fully intended angle range?
I am not sure I totally understand the question, but you could possibly offset a surface from a model face and that could be dynamic as long at it was always moved to the end of the timeline
@@cadcamstuff Thanks and sorry if I wasn't clear. Say I have a tire can turn left or right by 30 degrees. If the model of the tire were a simple squat cylinder, then the volume it interacts with as it sweeps from -30 to 30deg will make a sort of hour of hour glass shape with a curved surface fore and after on the tire, which represents the space occupied but tire when all angles are accounted for. The you can design around this area to make sure your wheel well maintains clearence at the full designed tire angle range. I see this sort of design surface all of the time in design meetings and I was just wondering if there was a built in was to generate such a surface/body based on an component and it's constraints in an assembly using Fusion 360.
Designers can't wait to bypass machining but all the models they are lazy with will be no good on 3D printing
I want to start my 7 year old learning 360. Do you have or could you do a video that would be fun but at the same time informative that would spark interest. 3D printing could be the outcome. Thanks. Love your stuff.
Not the first request to do something for the younger generation....I will have to think about something cool :-)
He starts covering adding dimensional tolerances around the 19 minute mark.
Thank you for the video. I'm a new user and this was very helpful.
The way you do your tutorials is really great for beginners, very easy to grasp.
Great video. I agree with the comment about the pace of the video, but if you were to go faster, then I would have to listen to the video twice, so in the end, I think your pace is good. It seems that if I like the pace, it means that I don't have enough time to digest the material. Maybe I'm just not smart enough to grasp all the information in a fast pace.
One question, could you give a suggestion of tolerances for wood, for a snug joint in wood working? For the CAM we need to program these tolerances. Any guidance would be great.
That is awesome to hear Laurence Schenk .Thank you for watching the videos.
Honestly, I don't have any great knowledge about tolerances for wood. I think I would do some test cuts if I was in your shoe's. I could imagine that fits will be different from different types of wood, and the surface area that it touches.
Have ana awesome day!
Always Great info Lars. Video is perfect. It seems I always have to pin my volume though to hear you. It's very clear, just not loud. Can you turn up you mic a bit?
Thank you so much Ray Manzi ! I will try to turn the volume up for sure
Thanks for so many great tutorials. Is there any chance you could cover nesting and general CAD to CAM workflow for CNC routers with wood or acrylic?
Hi Philip KIS Thank you for taking the time to watch the videos!
I know that at some point there was rumors of adding some specific nesting functions. At this point you can use pattern th-cam.com/video/zwkIxRw6eBA/w-d-xo.html
I will put this on my list to show for sure at some point.
Thank you!!
Best,
Lars
Thanks Lars. You are good teacher. What about removing parameters in model (extrude, hole, etc) with inventor HSM 2018
Jim, if I understand your question correctly I would just suppress the features you don't want to machine or another alternative is creating a patch over the surfaces you want to avoid
Hey Lars, which camera do you use to do these live streams?
Hi Scott,
Logitech C930e.
When are we getting the video about the mouse Lars?
I was suppose to record it last weekend, but then I had a shower modeling project on my hand :-)
Cool video as usual, but I agree with one of the later comments that a video on GD&T would be handy. Thanks for all the info!
Hi Jack Bryan Thank you for watching!
I think some of that are to come in an upcoming video!
Best,
Lars
Looking forward to it!
Thanks Lars! Very nice tutorial!
Thank you mstoops69
Great, like always.
Thank you so much Ele Mistrz !
Lars, no offense, but have you considered to increase the pace of your explanations/lectures? I don't know how the rest of your audience, but I think your videos can be followed even by a smarter dolphin making it sometimes a bit tedious for an average Fusion 360 user (or at least me).
It's informative, I always learn something new from your videos, but you know... The video can be always paused, rewind back etc. Think about the information density as time is precious... ;-)
Hi Jan, Thank you for taking the time to watch the videos and the time to comment.
Sorry if the videos at times drag.
Hope you have an awesome day!
Best,
Lars
My pleasure, Lars! Sorry if my comment is too harsh. I didn't mean it like that. It's been just a bit of hopefully constructive criticism... Other than that you are doing a great work with all those videos about Fusion360. Keep doing it!:-)
Never took it as other than constructive criticism :-). Truly appreciate you taking the time to watch the videoes!
Jan, I recently discovered the speed setting on videos greatly decreases time to watch videos. Even at 1.25X speed makes a big difference. Lars is great and glad he takes his time to explain details, but I know time is valuable. Hope this helps.
Being Fairly new to fusion, and self teaching through youtube and experimentation, I appreciate the pace.