Creo Parametric - Chamfers (Part 1 of 5) - References, Sets, and Dimension Schemes

in creo parametric feed chamfer command is most often used to break sharp edges remove non structural mass and create counter bores on holes that don't have them in this video we're going to take a look at the different ways you can select references the different dimensioning schemes and the options tab to create a chamfer you can use the chamfer command in the ribbon on the model tab also you can start off by selecting an edge that you want to chamfer for example for this hole and we have from the mini toolbar the edge chamfer command and there we can see the value that's being created and you can double click on the dimension if you want to change it to a different number let's take a look at the interface right now we are in sets mode a single chamfer feature can contain multiple sets of references that's something I will take a look at in a moment from this drop-down list we have our different dimensioning schemes and you can see that there are six of them here and since we're using the deep ID dimensioning scheme here we have the value for the distance that the chamfer is being created and there are a few different tabs in here we have the set tab and right now we're working on set number one it's just got this single reference here we have our value for the dimension and instead of Val you could use a reference like a datum point or a curve to drive the size of the feature and from the drop-down list we have the ability to choose the distance the way that the distance is calculated the default is offset surfaces but you could also use tangent surface if that becomes a factor we have the transitions tab so if you have multiple sets that intersect each other you can go into transition mode and control the interaction of the geometry there let's go back to sets mode also you have different pieces that you can choose whether to include or not and transitions and pieces is something I will take a look at in part two the options tab we'll take a look at later so you can generate a chamfer as a non solid feature if possible and the properties tab is where you can change the name but let's go back over here I'm going to leave the sets tab open I don't need my model tree let's collapse it just make it a little easier to see right now I've just got one edge selected if you hold down the control key you can add additional edges to that particular set and the advantage of using multiple edges in the same set is that they'll all be controlled by a single dimension value if you select an edge and you don't want it to in the set just hold down the control key and select it again if I don't hold down the control key when I'm selecting my different references I'm actually getting a new set in here and this is one of the biggest mistakes I see new users make when they are creating rounds or chamfers they don't hold down the control key one picking multiple references so they get multiple sets and they're all driven by different dimensions when usually you want them to be driven by the same dimension so if I don't want this set I will right-click on it and choose delete and then I can use the control key again to add that particular edge into this set so that is good for the chamfer feature for this one I could hit the check mark I'll show you again how to create other additional sets when you're still in the command here you just select the edge that you want to chamfer and there we can see the value and we can drag this out and because this is in a different set I have the ability to have a different value versus the other edges that are in here and in addition to that one of the nice things about having multiple sets is that it helps reduce clutter in the model tree let's take a look at the other ways of selecting various references so right now I have just an edge selected I'm gonna right-click and remove that I highly recommend one you can to use what are called intent references and intent references are a more stable way of selecting references rather than using the control can picking the four vertical edges on the outside of this feature if I tap the right mouse I can get what are called the intent edges which you can see from the pop-up-menu so this way I'm grabbing the edges associated with this particular feature in this case it's recognizing it as a protrusion and that way if the shape of that feature ever changes it'll automatically update the edges that are being used here so in ten inches I find to be very very helpful all right let us hit the check mark for now and we'll go back later on and change the dimensioning scheme some of the other different ways in which you can define your chamfers is if you go into the chamfer feature rather than picking individual edges you can have it go from a and surface to an edge and also from a surface to a surface for example I won't select this surface over here hold down the control can pick that particular edge and in this case drag it down a little bit here you can see the chamfer that is being created if I go to the drop-down list you'll notice that my dimension schemes that are available are oh by oh and oh one by o - I'll go into o versus D in a moment so that is one way of creating again I'm creating from a surface to an edge and they have to be selected in that order a surface to an edge another way is creating it from a surface I'll select this surface over here hold down control can select another surface and again at the as the name implies that is a surface to surface selection and a surface to surface selection a lot of times can be more stable than just selecting individual edges one thing I want to point out with both of these sets you'll notice that even though I selected this surface in this surface or this surface and an individual edge the chamfer automatically gets propagated to all tangent references so this one is good let us hit the check mark and let's edit definition of the original chamfer in order to show some of the different dimensioning schemes if I go to the drop-down list right now set one is active and that is that counter board that I created I have Eve all six different dimensioning schemes available first one I'm going to talk about is 45 by D and 45 by D has a very specific requirement 45 by D can only be used when the two surfaces that form the edge are at a 90 degree angle to one another so again it's got that 90 degree angle requirement if you don't have both of your surfaces at a 90 degree angle then instead of 45 by D you can use D by D and it's going to just measure that distance D back along both of the surfaces so the D options measures the distance along the surfaces that form the edge that you are chamfering besides D by D you have this option for D 1 by D 2 and in this particular case now I get different dimensions for the chamfered distances so for example maybe I want it to only be point 1 in one direction and in the other direction I'll change it to a value of 0.3 and in this particular case if you take a look in the tab on the ribbon you can see the two dimensions here also I've got an additional field for the dimension on the ribbon also there is a flip button if you want to change which side is the one side and which one is the two side so again you can see what happens when I flip there ain't another option that you have in this particular case the fourth one that we'll take a look at is angle by D so angle by D is going to be some distance back along the edge at a particular angle and similarly we can flip it in this case over here and I'd want to flip in this case so let's say that I am trying to do a counter board and I want this to be at 82 degrees this is probably way too big yeah it's way too big let me change this down to smaller value if the pre you goes away you can tell when you're trying to make it way too big let me just use a small value in this case over here before that yeah really really small in this particular case I'm gonna go a little bigger so for again if I wanted to do that real countersink at 82 degrees out let's flip it just looks terrible so again if you're trying to do it at 9 45-degree angles in your model and again you have the different drag handles you are not limited to just double-clicking on the dimensions and entering different value you can drag if you're trying to eyeball it out to the value that you want but let's go back over here and change this to 30 so those are the four the sort of like the more obvious dimensioning schemes but then we have this oh by oh and oh one by oh two and I'll be honest when I used to teach this material classes I hated discussing oh by oh and oh one by Oh two because it can be really really confusing but probably the easiest way of understanding and estate I mentioned that 45 by D has that restriction that you can only use it when you have a 90-degree angle between your different surfaces probably the easiest way to understand when you're using the D options instead is that the D options are available when you have and a constant angle along the edge references that's other than 90 degrees 45 by D is available when it's 90 degrees but the D by D D 1 by D 2 and D by angle those are used when you have a situation in which the angle between the surfaces that form the edge is not 90 degrees but the angle is constant the big difference with the Oh BIOS 1 the angle between these surfaces that form the edges is not constant so for example I've taken an ellipse and I've extruded it and then I sliced it at an angle with the day plain so if you take a look at the angle between this surface and the surface over here as its created the angle is not constant so if I try to chamfer the edge here I'll select the edge and then choose edge chamfer from the mini toolbar from the drop-down list I only have two different options oh by oh and oh one by Oh two and so it's measuring this particular dimension which I will let's make it bigger it's measuring this distance by offsetting along the surface rather than going directly along the surface that you are using and the difference between oh by oh and oh one by oh two is the same as the difference between D by D and D 1 by D 2 this is going to give you a separate dimension to control along both of the surfaces and last thing to mention for this part one is the options tab so on the options tab here by default if you are creating a chamfer on solid geometry it's going to give you a solid feature and by the way the chamfer can either add or remove material it is removing material in this particular edge but if in the previous model and we hit the check mark and jump back to it real quick you'll notice that in this particular case it added material because of the angle between the surfaces it's what's called a reentrant corner but let's go back over here select my chamfer edit definition again by default it is going to generate it as a solid feature which either adds or removes material when you are generating this feature on solid geometry if this particular part was non solid then the chamfer feature would be generated as a surface but I have the option in here in my solid model to generate this chamfer feature as a surface feature so we just generate a surface in here in this particular case it's not relevant but you do have an option to cap the end of the chamfer as necessary but again since this goes in a loop it really doesn't have a difference so in this case here you can see if I query select here is the surface feature that is generated at the chamfer but it is a non solid feature please join us for part two when we will go into transitions and pieces I hope you enjoyed this video for more information please visit WWE winchell comm if you learned something from this video please give it a thumbs up and if you liked this video please click the subscribe button to be informed when new videos are uploaded thank you very much

Channel: Creo Parametric

Views: 1,946

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Id: csJiJnKoRe0

Length: 14min 1sec (841 seconds)

Published: Sat Sep 07 2019