Amazing knowledge! Thanks

If there are high surface finish requirements when edge bending/press brake, the Swedish product Tribotextil™ can be applied in the bending/pressing tool and mechanically protect the sheet metal from scratches and other damages. Tribotextil™ is an extremely thin and very strong textile that in this process replaces lubricants in the tool.

@TheEngineeringToolboxChannel

2 жыл бұрын

Thank you for sharing. Also the V-Series Black by Wilson tool will reduce die marks, use less bend force, and lessen unwanted material deformation when features are close to bend lines.

sin(t)/tan(t)=cos(t) After simplifying the formula becomes more easier.

Excellent explanation ! Where could we download that excel sheet ?

@TheEngineeringToolboxChannel

4 жыл бұрын

Here is how you can create it for yourself. kzread.info/dash/bejne/dWqWxrmhnKmbeZM.html

If I use beggar V, like 20 mm more V length than the standers one, is there any problem I may face?

@TheEngineeringToolboxChannel

Жыл бұрын

Not necessarily any problems. But you should be aware that with air bending the die opening affects the radius of the bend....and therefor affects your bend deduction values. If the flat was made with a certain bend deduction in mind and you change the die it can affect your formed dimensions.

The company I work for uses a 1" die for everything. Is there a way to determine what the radius will be across varying thicknesses while using only a 1" die?

@cafiveohsrockbandremix9254

Жыл бұрын

It depends what material you are bending and whether you are bottoming or air bending. If you are air bending aluminum parts, you're probably getting an approximate inside radius between .13 and .15 (13-15% of die opening) and your outside radius will be material thickness + inside radius. If you're bending steel, your radius is probably 20-22% of the die opening. Check out the article "Bending Basics: How the inside bend radius forms" on The Fabricator website for a better explanation

@TheEngineeringToolboxChannel

Жыл бұрын

Couldn't have said it better myself!

My first thoughts towards "these rules of thumb are open to guessing etc" was yeah no theres a science we just have bent and rusted shit LOL

Sir this formula is applied only to the air bending in press brake machine or we can use this formula for designing a V-bending tool for power press.

@TheEngineeringToolboxChannel

3 ай бұрын

This formula is for air bending using standard press brake tooling.

When do we multiply by 6, 7 or 8..... to get the value of V die??????

@TheEngineeringToolboxChannel

3 жыл бұрын

The point of the video was to show that you shouldn’t! Instead use the calculation shown 👍

12x material thickness WTF bending 12 gauge on 30mm die is insane. I use 6x every time

@TheEngineeringToolboxChannel

2 күн бұрын

Agreed, but it ultimately Depends on the punch radius and bend angle as well. Hence the point of the video.

Holy moly, that narrative is so fast and there is no example. Thanks anyway.

@TheEngineeringToolboxChannel

3 жыл бұрын

Sorry about that! 😬 Edit: check out this video. Shows some calculated examples. kzread.info/dash/bejne/dWqWxrmhnKmbeZM.html

@KushyKaar420

3 жыл бұрын

@@TheEngineeringToolboxChannel He's not wrong but it also doesn't apply to large radius bending of thinner mat'l... And I don't mean it with disrespect but as a tool and die guy who has achieved what some with 10x my experience thought "impossible" physics is very much a large player in this. I'd be happy to see a response to this.

@TheEngineeringToolboxChannel

3 жыл бұрын

@KushyKaar420 in my experience this method works very well regardless of material thickness and punch size combination. In fact, it that is where it is most useful. Happy to be proven wrong though! Using this method for 3”R in 20ga mtl would suggest a ~8.5” die opening for air bending. What die opening would you suggest for this scenario? And how would you determine it? This is another video that goes further with some examples of more standard scenarios but I’ve certainly used it for odd-ball punch mtl thickness combos as well. kzread.info/dash/bejne/dWqWxrmhnKmbeZM.html

@KushyKaar420

3 жыл бұрын

@@TheEngineeringToolboxChannel I've put a 6"R in 1/2" matl' with a 12.6" bottom. There are a lot of factors to bring to the table here and I dare not assume I'm always right. Btw that 6"R wasn't achieved by a 6"R punch was done with a 4"R punch. I've done the same with thinner stuff even bypassing your Die width + 2xmt.

Very low voice