AutoCad :: How To Use Constrain To Bisect Angle In Geometry
Aug 6, 2011
In triangle ABC, AD is drawn as angle bisector and BE is drawn perpendicular to AD. I want to draw these two lines and triangle ABC by means of constrains, so that when I move point A (make it bigger or smaller), I can get those two lines move automatically. What kind of constrains should I use? For triangle itself, I use "coincident" constrain. I think this part is correct. Whenever I move a vertex after selecting a line and using red grips, it responds and triangle reshapes. Do we have angle bisector constrain? I draw angle dimension line for two equal angle and tried to impose equal constrain for these two angle but couldn't succeed.
I just set up an angle constrain with min and max values (explicit vector) and when I grab and move the part inv will crash, it happened 2 times after restart too...
I have inv2013 Pro with the latest SP1 installed - win7 ultimate
I've got this hinge working using translational constraints - but I don't seem to be able to apply an angle constrain to it to drive it.
I can't apply an angle constraint when using it as a flexible assembly either - and the flexible assembly keeps throwing an error to do with the translational constraints.
Is there a quick way to rotate an object to match an angle without knowing what the angle is? I am using AutoCAD 2011 now. I was using 2007 and I had an add on command the would rotate an object using a base point and picking the two lines that make up the angle, and it would match the angle you wanted. I can not get that command to load in 2011.
I have a property line that is N 36d19'52" E but needs to be N 12d52'18" E. The obvious and calculated rotation angle would be 23d27'34" but when I rotate the line by the calculated angle it doesn't rotate to the right angle. It's off by 0d11'10"!? When I draw a line by bearing at N12d52'18" E and inquiry the angle between the property line and the drawn line the angle difference is in fact 23d27'34".
Let's say I am inserting a square block into a dwg and want to get it parallel to an existing angled line. Do I have to read the angle of the line and insert the block to that angle or is there a quicker way?
how to convert "real world" angles of elliptical arcs into those shown in a dxf file?
Say that I have drawn an elliptical arc with its start angle on 210 degrees and an end angle of 324 degrees. The values in a DXF file, for an elliptical arc, have something to do with the contant "PI" (3.14159). I know that a full circle is 2*Pi but how to do this with elliptical arcs!!
I've managed to hack together some code to draw a rectangle and dimension it. Now I want to constrain it to the origin. I figure either using two dimensions from a top/side to the origin and setting the dimension as half of the other respective dimension would work. Or constraining the center point of a top/side line to be vertical/horizontal to the origin.
The problem I'm having is I do not know how to reference the origin. So until I figure out how to reference the origin point I can't use either method.
Public Sub DrawSketchLine() ' Check to make sure a sketch is open. If Not TypeOf ThisApplication.ActiveEditObject Is PlanarSketch Then MsgBox "A sketch must be active." Exit Sub End If ' Set a reference to the active sketch. Dim oSketch As PlanarSketch Set oSketch = ThisApplication.ActiveEditObject ' Set a reference to the transient geometry collection. Dim oTransGeom As TransientGeometry Set oTransGeom = ThisApplication.TransientGeometry Dim oUOM As UnitsOfMeasure Set oUOM = [Code].......
I've made 2 parts and I'm attempting to constrain them but I can't seem to get it to fit properly.The transition should fit at the opposite end of the 2 square cutouts with the square end of the transition inside the cylinder.
I've not seen it mentioned anywhere so I must ask. When in 3D modelling, is it possible to set AutoCAD to constrain drawing and movement in only the positive Z axis? I'd like to draw obviously in the XY plane but also only in positive Z (above ground?). I don't think i'll ever need to draw anything in the negative Z plane, which by my understanding would be actually underground (correct??). If it is at all possible to constrain in the positive Z plane, would there be a way to temporarily over ride this for the times I may need to Press Pull a hole out of a solid?
I have this strange knack of drawing in Top view in a left viewport (model space) then extruding in the right SW viewport then sometimes when I try ti move objects the end up underground (negative Z plane).
With reference to dynamic blocks. When I insert the block it is no problem, but how do you constrain the block, so when you re-size it using the block table the center of the block stays on the insertion point and is symmetrically around that point!
I am trying to CAD a model rocket I just made so I can test the aerodynamics of it. I have all of the individual parts made in inventor, but I am having trouble getting the fins on the rocket.
How can I constrain the fins (which have a flat face) to the outside of the cylindrical rocket tube? The photo shows the fin and the face (the narrow and long face) that I am trying to constrain to the tube.
SO what is everyone say, trick about speeding up constrain execution. I have started working on this new project with 2013. And i'm finding myself losing alot of time. Basicly what i do is insert part from our database or content center and assemble them. So 80% of my activities on inventor are constraints. Right now i have this assemblies 175 / 156(small to me). And executing a constraint is minimum 4 seconds each time. If you consider that about 3 contraint is needed for each piece and final total part will probably be around 1000. i'm losing alot of time here
Yeah, i am not using preview. Why is inventor recalculating that much each time? Is it doing a rebuilt after each constraint?
What have you done that really increase the excution time of constraints?
Workstaion is Windows 7 64bit Intel Extreme i7cpu I975 @ 3,33 12bg ram 4 ssd in Raid stripping.Nvidia FX3800 Inventor 2013 SP1
I am trying to determine how to properley constrain the assembly below, so that the compression of the rubber gasket will be properly indicated.
Currently I am seeing the deflection of the shelf in the downward direction, but I do not see any indication of stress in the gasket behind.Currently the gasket is "bonded" to the steel tube the screws are bonded to the shelf bracket and the steel tube.
I put in "work axis" at the center line of the shelf bracket and the CL of the gasket, but I can't find a way to constrain to a work axis.The file is too large to upload here...
I have one problem and I would like to get your opinion how I could solve this.
I can't share models I have problem with, but I made another with the same problem.
I have two parts - one with slot, another with "pin". How to constrain the "pin" to always move in slot?
I had some ideas but non of them worked for me:
1. Use the Transitional constrain came first in mind, but it gives unsuspected results in this situation. Pin part is jumping around and ends up contrained in another place ir should be.
2. Contact solver kind of do the job, but it works quite bad. I gives no control or accuracy (i can not control how much pin is moved out)
3. I even thought of point on 3d sketch constrain, but it can not be done
How you would suggest to constrain the movement? I hope I stated problem clear enough.
I'm trying to make a constraint allowing the dark smaller cylinder (1) to run in the copper track (2). I want the larger cylinder (3) to be able to rotate around its own axis, while everything is rotating around the Z axis. I've successfully constrained the parts so that all the parts can rotate around the Z-axis but when I constrain the smaller cylinder (1) with the tangent constraint with the track (2) the smaller cylinder is not able to move around on the face, it's just glued to the face.
I want the smaller cylinder (1) to recognize the copper faces as solids (so that it can't intersect the surfaces), this would allow the proper movement. I've attached an image of the parts.
How is this accomplished in Inventor? The 3D sketch environment seems intentionally crippled. Many of the constrains are not available, and the "include geometery" command refuses to include the origin (or any other planes and axis for that matter).
Is it possible to have a tangent constrain on multiple curves?
see enclosed rough sketch, i would like the curved free end or the arm to be in constant contaced with the wavey top line on the other part, the wavey line is constructed as 3 curves but i can only get the tangent constrain to apply to one of the curves.
i would like the tangent constraignt to move between the curves so the part stays in constant contact with the wavey line. this is just a mess about sketch i suppose a real world instance will be a wheel following a shaped cam plate.
I have a sketch that Inventor changes its status between under constrained, over constrained, and fully constrained depending on dimensions (makes sense), and wether I rebuild the model (WTF?).
Steps to reproduce:
1) Open the attached .ipt file.
2) Examine Sketch11 (under Face3) It should be fully constrained.
3) Exit the sketch. Open the parameters dialog and change the value of "angle" from 45 to 60. (If you get an error message change it to 50 first, then 60. It's a work in progress.)
4) Re-examine Sketch11. It is now under constrained.
5) Exit the skecth and go to the manage tab. Click "Rebuild All".
6) Re-examine Sketch11. It is now fully constrained.
7) Scratch your head and post back with your theory.
I have an assembly with a curved line made in a sketch, and a part with a point in the bottom.
I want to constrain the point to the curved line, but the regular Constrain options wont let me do so.
I am making an animation with Inventor Studio, so I need this constrain, so I later on in studio can manipulate it and insert the first part into the other.
How you constrain a section view so that is perpendicular to an axis. See "SECTION B" on the attached drawing for an example of what I am attempting. I have created the view but cannot make (constrain) the view perpendicular to the slot that is orientated at 30 degrees from the vertical centre line. I have lined up the view by eye so it looks close but it's obviously it's not accurate.
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