Constraint-based sketching with DesignSpark Mechanical
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- Опубликовано: 3 окт 2024
- This is a tutorial to get you started with using different constraints in your sketches. You will need version 5.0 or newer of DesignSpark Mechanical to access this advanced sketch mode. The video was created by our developer partners at ANSYS Inc.
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Note to users: the 'Sketch' tab becomes available only after you enable it in the software via File (top left DSM logo) -> DesignSpark options -> Advanced -> Enable constraint based sketching.
Tick the box and restart the software to see the new tab. This constraint-based sketch mode is an advanced function which is toggled off by default, so existing users can start with a familiar UI and new users can easily follow the starter tutorials.
Why has the Polygon tool been dropped when in Constraint based mode there seems to be plenty of space for it?
thank you
this really should have been in the description... looking for help and not reading replies
Why has the Polygon tool been dropped when in Constraint based mode there seems to be plenty of space for it?
Is there a way to mirror flip an object that is already made?
I started with designspark mechanical then went to fusion360 just because I can update the model just by updating the Dimensions now the designspark mechanical has the same way of working sketch based modeling i will be returning to designspark mechanical thanks great work keep adding more options.
Constraint Sketching assists with the sketch only. Once a sketch becomes a face the sketch is consumed and no reference to it can be made for further changes. Only undoing upto the sketch will bring back the constraints.
Thanks...i appreciate the indepth example.
Many users will like adding dimensions to sketches and some will comment that it takes longer to add / subtract constraints to drive changes than before. It takes getting used to but i'm speeding up now. The traditional non constraint method is still retained - i'm very glad as with sectional working in advanced mode, it works differently at the moment. I note that overconstrained sketches aren't always that easy to debug although, as a counter positive point, both under constrained and overconstrained are still accepted as a valid sketch for subsequent pulling operations.
from this user, It's very appreciated that this new Spaceclaim technology is included in DSM .
In my DSM v5.0 ( 7171) Sketch Option ' Automatically Create Constraints' isn't there to turn off ! Perhaps it is in DSM v5.0 ( 7232 )...Edit, DSM support has said this option will be in V6
I'm used to constraints now and can work fairly fast - not moaning anymore...
After enabling Constraint-based sketching, the "equation" in sketching is missing
So, how do you other users work with this? You design a part, you make sure the constraints are right, you close the sketch, then the constraints disappear and if you then realise that one constraints should have been a few millimetres more, you are out of luck, because the constraint is gone? For simple shapes, I guess you can just "pull" the surface that additional mm, but that's not really the same. I realise this is supposed to be easy-to-learn, but this is a massive destroyer of productivity for me.
Hi and thanks for your comment. it's i feel important to note that as you progress with a design, you constantly re-evaluate what was done before. Believe in your eye's and brain and make a forward alteration. It's easier to pull, move, add, delete what you see now than go back , make a change, go forward 3 steps, make another change etc. Of course history editing is possible. ps you can always undo any action or undo to any point backwards ( i usually have a limit of 50 steps but that's an user setting option ).
if it was easier to undo, then undo to the sketch and make a change to it.
The constraints in the sketcher are there only to make sketching easier and more predictive to sketch ( whilst in the sketcher) changes. it's quite easy after a while to make quite radical sketch changes - the sketcher will get more tools in the next release. I'm quite a convert now but there are some short comings i'll not argue.
@@TAH1712 "undo" is in absolutely no way a replacement for parametric design where you can change dimensions at any time.
"It's easier to pull, move, add, delete what you see now than go back ,"
That is simply wrong in software such as SolidWorks, OnShape, Creo and all other professional CAD tools. Of course in DesignSparks it is prohibitive to go back, because you can't just change your parametric values, you would have to undo and redo it with different values. That is just proof that this is an inferior way of doing things.
You mention "history editing" - is that a thing in DesignSpark? I cannot find it in the menus or by googling.
@@TAH1712 ". it's quite easy after a while to make quite radical sketch changes"
How? The sketch is subsumed into the solid you generate from it - the sketch disappears. Hence, there is no way to edit the sketch after creating a solid.
@@YensR I meant changes within a sketch only. Yes, sketches are subsumed afterwards.
Great video! Easy to understand, thank you!
How can i edit an old sketch after creating a solid from it?
Thank You. It is Decenber 27 and I just got Spaceclaim modeler 2 weeks ago. This is a question - without being critical or intending a pun!
@ 1:00/17:34 you created a rectangle, giving it dimensions 40x60. Rectangle - by definition - is constrained by its sides being parallel, which implies that giving it its dimensions it is fully defined and constrained! Why are the 2 far sides unconstrained? That would imply it is parallelogram of undefined size and inner angles.
Next I am wondering is, if it is possible to constrain and edit the size of extrusions (straight or rotational)
How do I turn off automatically creating constraints? The checkbox is literally not there for me.
Auto-constrain is a feature added in DSM v6.0. With constraint-based sketching enabled, click on the Select tool and look in 'Options-Selection' (usually docked to the left of your screen) for 'Automatically Create Constraints'. Click to un-tick the option. You can disable constraints completely and go back to classic sketch mode by following the above pinned comment.
@@designsparkmechanical1693 Yeah that "automatically create contraints" checkbox isn't there.
@@HypothermicIce Go to Help/Resources -> About DSM. If it doesn't say version 6.0 there, you have DSM v5 which didn't have the auto-constrain option.
As an important point , it's my view that the final completed 3D design, in the quickest time possible, is the TARGET, thus, I strongly recommend ONLY adding enough constraints and dims as necessary to get the sketch right and go no further, getting the JOB DONE ASAP! ;) All selection methods for dragging / moving to grid positions or incremental amounts etc ( traditional techniques) all work well 'in the mix' with the new constraint methodology ( under constrained) - yep i do like...once a sketch is exited, all constraints are lost - their 'reason for being' is only to assist in successful, joined up accurate sketching...
That is a setup for disaster down the road.
Not properly constraining a sketch, and we are talking about maybe two minutes for a pretty complex sketch, can save your bacon.
Last thing you want is multiple sketches in a model having hidden problems that stack up because you didn't constrain a sketch fully.
" ONLY adding enough constraints and dims as necessary to get the sketch right and go no further" That is way to open to interpretation per each individual designer.
Over a decade working in a group with hundreds of models and the last thing that I want to do is having to stop in the middle of some project where I am finishing work on a model that someone else made and I blow up the feature / history tree because someone was changed far up in the tree that screwed up something else 10 features down that then lead to a cascade of sketches and features dying that I have to then fix.
You might save a 15 minutes in a larger model by ignoring some constraints but you might make for lots of work later on especially if someone outside of you has to fix something that may not even know your design intent which is what constraints help with. They don't just lock down sketches.
@@mjs28s Umm, DesignSpark Mechanical is not a history based parametric modeler. Whilst Spaceclaim has the ability to record it's history 'IF' using Block recording, so far with DSM it does not yet offer this ability. The new to V5 constraint sketcher based approach is in addition to the traditional sketcher. Adding constraints is a bit of interest which I enjoy actually if wishing to explore the sketch with different proportion geometries. The purpose of the sketch is to produce a face which is the end result in most of my modelling situations. However, in the future no doubt block recording will become more flexible ( it's pretty good now in spaceclaim ) and I'll be using it more especially in situations where procedural modeling has benefits such as plastic components with mold draft etc however I'm very open to it's use wherever there's a time benefit.
Hello, how to add the DETAIL tab? Thank you.
Hi, the detail tab is part of the paid Drawing add-on. More info on how to buy: www.rs-online.com/designspark/introducing-the-new-designspark-mechanical-add-on-modules
@@RSDesignSpark thank you.
Great presentation
Great tool & feature update
Thank you
Unwatchable, well strictly speaking unlistenable. How many "go ahead and"s can you cram in per minute? It's meaningless, redundant and bloody irritating.
Phil Chadwick put on subtitles then.. the content is what matters, not the accent/delivery. Not everyone speaks Oxford English in 2020.
I'm far more interested in learning the content / purpose of this new functionality than count the 'go ahead' s - i've no complaints with this tutorial delivery at all.