LVD BTL Folding Table

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1

Hello in the folder C:\Program Files\SOLIDWORKS Corp\SOLIDWORKS\lang\english\Sheetmetal Bend Tables, I saw that there is a sample.btl file that can be opened with notepad.

According to an online training course from avenao, it is a machine data table.

Is anyone in possession of a BTL table for an LVD brand folding machine.

I want to use as exact a frame as possible to make them in laser cutting, I set up a template table for the sheet thicknesses and I want to use something that is as close as possible to the VĂ©s and the tool radii that we use.

Thank you

2

The .btl is the "ancestor" of the bend loss table in Excel:

http://help.solidworks.com/2016/french/SolidWorks/sldworks/c_Bend_Table_Overview.htm

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3

Hello 

Look there; It has a folding table that you will need to adapt.

http://www.lynkoa.com/forum/3d/perte-au-pli-et-facteur-k-avec-une-plieuse-cn-amada

Or this one

http://www.lynkoa.com/forum/tĂŽlerie/tables-de-zones-de-pliage

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4

How do you know exactly the value of the bend loss in relation to the machine you are using?

I imagine it must depend on the radius of the bending tool used and the Vee.

On the chart of the bending machine it is indicated that for a 20/10 sheet metal it is necessary to use a 16 V and that the bending radius is 2.6 mm; excluding the tool that is used to bend to a radius of 0.4 mm.

I'm a bit dumped in the solidworks tables.

5

See this link Video tutorial

https://www.youtube.com/watch?v=d068bXXRsU8

@+

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6

When you say that the tool used to bend has a radius of 0.4; This is the punch, whereas when we give a radius of 2.6 on an ABAC, it is the radius that we obtain with the die (Ve). 

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7

The ONLY way to have a correct and most accurate bend loss table possible,

it is to make tests in the workshop with the different thicknesses, V, angle, material.

 

You can rely on an existing basic table (easily found on google) and then modify the values as you try the workshop.

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8

Indeed, with a thickness of 20/10 I take in most cases a V of 16.

For a 90° crease, the crease loss with us is 4mm.

 

Either for an angle of 50x50 = 196mm of developed and a fold at 48mm.

 

Adam.. The folding tables... Quite a story!

 

 

 

9

To put it simply, up to ~ 5mm is more or less the inner ribs. Folding is a theoretical science, there are so many variables. Cutting without rolling or contrary quality of the sheet, thickness of the sheet metal batch (variations of a few tenths) and hardness, softer, radius and dev a little larger and harder radius smaller and dev smaller. In all this we have to find a happy medium....

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10

Yes, up to 40/10, you can use the factor at 0.33 as long as you use the right Vs. You should get closer to the loss at the folds.

 

Attention Ac cobra. Your answer is correct if it's 90° folds! ;)

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11

Problem solved by doing tests on the machine, I have a tolerance of 0.3 mm on angles greater than 90°;

Testing there is nothing better in the end.

12

So the best answer was not yours but Bart's:

Bartâ˜ș

Bartâ˜ș

The ONLY way to have a correct and most accurate bend loss table possible,

it is to make tests in the workshop with the different thicknesses, V, angle, material.

 

You can rely on an existing basic table (easily found on google) and then modify the values as you try the workshop.

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