Parabola?

[Anonymous]

Is there no way to draw a parabola in Fusion 360?

[Anonymous]

Is there no way to draw a parabola in Fusion 360?

[AndrewSears]

The current build of Fusion360 does not have the ability to "draw" an equation controlled parabola. Here are 2 suggestions.

1) Try modeling a cone and inserting a plane if you know the angle and starting position WRT the base of the cone.  You can then project the intersecting edges of the cone into a sketch created on the plane and get a parabola.

2) If you do not need the parabola to be precise (you are just going for close enough) you could use a spline curve with symmetry.

Give that a try and see if this gets you to your solution.  If you are having problems with this let me know and I will help you work on it.  Might need to break out that geometry or calculus book.  🙂

Andy 

[AndrewSears]

The current build of Fusion360 does not have the ability to "draw" an equation controlled parabola. Here are 2 suggestions.

1) Try modeling a cone and inserting a plane if you know the angle and starting position WRT the base of the cone.  You can then project the intersecting edges of the cone into a sketch created on the plane and get a parabola.

2) If you do not need the parabola to be precise (you are just going for close enough) you could use a spline curve with symmetry.

Give that a try and see if this gets you to your solution.  If you are having problems with this let me know and I will help you work on it.  Might need to break out that geometry or calculus book.  🙂

Andy 

[rishivadher]

hi

for complex geometric funcions I usually use the Maple, but this has also plots SVG (http://www.padowan.dk), and plot the SVG can be imported to Fusion 360

[rishivadher]

hi

for complex geometric funcions I usually use the Maple, but this has also plots SVG (http://www.padowan.dk), and plot the SVG can be imported to Fusion 360

[Z.P.]

I am going to take a screenshot of a parabola in desmos and then trace the screenshot with a bunch of little curves... wish me luck

[Z.P.]

I am going to take a screenshot of a parabola in desmos and then trace the screenshot with a bunch of little curves... wish me luck

[etfrench]

Perhaps it would be easier to use the built-in function Conic Curve

[etfrench]

Perhaps it would be easier to use the built-in function Conic Curve

[Anonymous]

i  have just created a parabola with the control point spline function. its seems to be exactly what i needed.

I hope the image shows the relations clear enough, since i dont know how to explain it clearly.

[Anonymous]

i  have just created a parabola with the control point spline function. its seems to be exactly what i needed.

I hope the image shows the relations clear enough, since i dont know how to explain it clearly.

[etfrench]

It's a spline, but is it also a parabola? 

See this site for another way to create a parabola.

[etfrench]

It's a spline, but is it also a parabola? 

See this site for another way to create a parabola.

[Anonymous]

i've made a screenshot of a parabola that i made in geogebra, and used that to trace it and it seems to be exactly following that function.      (y= sqrt(18.906x)   A(9.543,0)  )

[Anonymous]

i've made a screenshot of a parabola that i made in geogebra, and used that to trace it and it seems to be exactly following that function.      (y= sqrt(18.906x)   A(9.543,0)  )

[chromation]

There are two ways in Fusion 360: Conic Curve with rho=0.5, and Control Point Spline. Locate three points before drawing the curve:

- the two endpoints of the parabola

- the point where the tangents to the parabola endpoints intersect

For more detail, please see my reply to a similar question:

https://forums.autodesk.com/t5/fusion-360-design-validate/how-to-represent-a-quadratic-bezier-curve-...

[chromation]

There are two ways in Fusion 360: Conic Curve with rho=0.5, and Control Point Spline. Locate three points before drawing the curve:

- the two endpoints of the parabola

- the point where the tangents to the parabola endpoints intersect

For more detail, please see my reply to a similar question:

https://forums.autodesk.com/t5/fusion-360-design-validate/how-to-represent-a-quadratic-bezier-curve-...

[drew.regner]

Another way if you know the Parabola function you are using make a table and solve for the values and put those points in then connect it with a spline, mirror it about the vertex and it should make the parabola pretty nice.  Just like we did back in Algebra 2 in High School. 

[drew.regner]

Another way if you know the Parabola function you are using make a table and solve for the values and put those points in then connect it with a spline, mirror it about the vertex and it should make the parabola pretty nice.  Just like we did back in Algebra 2 in High School.