Hi,
I would like to add a "Length of curve" variable to my list but I do not know how to do it. The curve is made by specifying the radius of the curve in a sketch and then i used the sheet metal tools to create a part. I need the length of the curve (bend) to be the value of global variable (see attached pic) I have also attached the model.
Kind regards
Michael Mullineux
Here is a video showing how I would do this: https://mecadsa-my.sharepoint.com/:v:/g/personal/wian_mecadsa_net/EV2vb_WcgwVCrOwjn6fgV4cBbQ6bekEwuzn3xa0xCj2Wew?e=dwzM8…
Thanks so much Wian
or:
2Πr/(360/α)
Hi Krzysztof,
Thanks for replying, I will need the angle for this to work and since Im not sure what that will be I cannot use the formula. I sure there would be a way to dimension that angle as driven and then use the formula but measuring the length as per the video above seems a little easier.
Thansk again for the reply, I appreciate all the help I can get.
Kind regards
Michael Mullineux
You get the angle value from the model.
Also, the mathematical method allows you to get the length of the material used for the bend.
2Π(r-(thickness*k)) / (360 / α)
Hi Krzysztof,
Wouldnt the mathematical length would depend on the radius I use? So either way I will get the actual length of material I just need to make sure I use the correct arc/radius?
I noticed that I specified a radius of 20 and then when I made the sheet metal extrude it gives me a choice of which side of the curve the material. The length of the curve when I flatten it is the center point of the sheet metal (see pictures below). Inner arc length is 31.42 and the outer arc length is 32.57 making the middle length 31.99/ so for the correct length of the material I could need to use either the center line to get the arc length or the radius plus the material thickness in the formula (what is the k in your formula)?
Kind regards
Michael Mullineux
So, as I thought, you need the length of the material used for the bend. In that case, the Wian Vermaak method is useless (Averaging the length from the external and internal dimensions will only work if the "K" factor is 0.5). You specify the bending radius in the Flange options. Also the angle and "K" factor. By default it is 0.5, but it is dependent on the material and tools used. It should generally be checked.
You can take all these parameters from the model to the equation editor and the result will be updated when you change them
Most suitable title is "Linking curve dimension to global variable".
Hi Maha,
Im not sure what you mean?
Kind regards
Michael mullienux
What I mean is already you have a curve with dimension, you are making that dimension as a global variable. Therefore most appropriate title will be "Linking curve dimension to global variable".
Here is a video showing how I would do this: https://mecadsa-my.sharepoint.com/:v:/g/personal/wian_mecadsa_net/EV2vb_WcgwVCrOwjn6fgV4cBbQ6bekEwuzn3xa0xCj2Wew?e=dwzM8…