Problem with a sketch line arc
Inventor and Fusion do not use the same sketch engine.
It seems Inventor allows you to sketch draw a perpendicular arc while with Fusion you can sketch tangent transitions nicely.
So I think for what you want you need to use the arc tool and then constrain it perpendicular to the line end!
Claas Kuhnen
Faculty Industrial Design – Wayne State Universit
Chair Interior Design – Wayne State University
Owner studioKuhnen – product : interface : design
@Anonymous That drafting wise can work but it seems not logical. Inventor like Fusion 360 use constraint sketches.
most cases when using the line tool people need to draw an arc tangent to a drawn line for mechanical shapes / designs.
Because this will also add the tangent constraint it makes more sense to draw a line then draw the arc and via the perpendicular
constraint or 90 degree angle constraint set the arc perpendicular to the line and not tangent to a helper line to make it perpendicular.
Claas Kuhnen
Faculty Industrial Design – Wayne State Universit
Chair Interior Design – Wayne State University
Owner studioKuhnen – product : interface : design
but that is an unusual task
most times I draw the arc and then use the perpendicular constraint!
You know how to use that?
Let me know I can make a video for you!
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*Claas Kuhnen*
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Claas Kuhnen
Faculty Industrial Design – Wayne State Universit
Chair Interior Design – Wayne State University
Owner studioKuhnen – product : interface : design
@johnKLUQK wrote:
I see no way to apply such a constraint to an arc in Fusion
Regards
John
To draw an arc perpendicular to a line use the Arc center point arc and when it asks for a centre point pick somewhere on the line, try to avoid the midpoint
, then pick the endpoint of the line as the start of the arc.
If you already have the arc just apply a coninsident constraint, first pick the arc centre the pick on the line.
Mark
Mark Hughes
Owner, Hughes Tooling
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Sorry for the delay and miss information. The perpendicular constraint does not work with the arc - I quoted the process of a different application.
But basic geometry tells you that to make an arc perpendicular to a line you need to have the end point of the arc + the center point of the arc to
be on the line.
Secondary as mentioned one could also add a helper line and make the arc tangent to that line but that adds an additional line to the sketch
which in time when repeated a lot makes sketches needlessly heavy.
Here is a screencast showing both ideas:
https://drive.google.com/file/d/0Byzv_NlyKp_2SDQ4MWl0X1FoVW8/view
Let me know if this helps!
One thing you need to understand about Fusion is that it focuses on fast and most common workflows.
Line to tangent arc is the most common approach when sketching it at once with the line tool.
However sketches are most times always roughly put down and then via dimensions and constraints you start adjusting the sketch as needed.
As stated then adding an arc and via constraints positioning it as needed is only a natural step.
Obviously being able to sketch an arc with the mouse direction tangent or perpendicular from a line is nice but doing it the way with constraints is
not really that much of a different approach either. In addition the student will learn about basic geometry in addition.
I find very often that this is what students lack and then when they have to approach a creative problem from a different angle they do not see the solution"s" in-front of them.
Essentially we are talking only about a different approach and not a time consuming work around!
Claas Kuhnen
Faculty Industrial Design – Wayne State Universit
Chair Interior Design – Wayne State University
Owner studioKuhnen – product : interface : design