Spline Locked

[Anonymous]

Hello everyone

I am sorry if my question is too simple, but I really don't understand how to solve it.

I am trying to redesign a simple mouse based on Soli*works tutorial https://youtu.be/lnJTfrqYfMU?t=125

I am new in the spline. I can't do exactly as he did

this is what he did

this one is mine

I don't really know why I can't move the red square. I want to lengthen it so I can get a better curve, but I can't. I have open "show all constraint", but there's no constraint

I just make a constraint to X and Y axis.

when I try to lengthen it, the overconstrained error pop up

one more thing, what are 130 and 115 mean in his tutorial? how can I do that in Inventor?

I try to measure the dimension but the dimension shows the length of the square.

**I use Autodesk inventor 2020 student version

thank you so much

[JDMather]

Have you Activated that Handle?

Attach your file here.

[Anonymous]

@JDMather Hi, thank you so much for your help

here I attached the file.

I have activated the handle, I constrained the handle into X axis/Y axis, but when I add the dimension

it is always said "overconstrained", I can't do constrained axis, add dimension and adjust the handlebar in the same time

by the way, what is the 130 and 105 in inventor?

thank you so much

[JDMather · Accepted solution]

I think the fact that you are not able to drag the handles in Inventor 2020 is a bug - it would make it easier as the spline handle weight formula for Inventor does not match SolidWorks, so you have to go by trial and error.

The weight dimensions are added in a different technique than SolidWorks - simply select anywhere on the Handle.

Note that the weight dimensions are ul (unitless).

Open the Attached file.

Make the SWx sketch visible.

I dimensioned the handles to approximate the spline in the SolidWorks image.

[Anonymous · Accepted solution]

Hi, thank you so much for your reply @JDMather 

it is really help me,