Linuxcnc Press brake - Open Source

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10 Oct 2020 07:36 - 10 Oct 2020 07:41 #185560 by pinder
Hello everyone,
Everyone here with a plasma cutter need a press brake. PlasmaC saved our lives once. :laugh: .

Now, I want people to gather here and discuss how we can design a Linuxcnc Press brake.

We can do discussions in phases. One phase at a time, so that we dont lose track ( its important for efficient solution).

[1] Inspiratons, suggestions, example videos. etc

[2] We have to set goals and limit ourselves to achieveable stuff. What we need and what we dont.

[3] Solving mechanical problems

[4] Then, electrical and digital

[5] Then comes software.

[6] Then we can design a GUI.

Please give your opinions, It will be milestone for Linuxcnc.

Cheers,
Pinder
Last edit: 10 Oct 2020 07:41 by pinder.
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10 Oct 2020 07:40 #185561 by pinder
[1]
This is triumph 5000 I think. Superb! work efficiency

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10 Oct 2020 08:04 #185563 by Aciera
Automatic angle measuring system. Very cool. Maybe achievable by using external offsets?

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10 Oct 2020 08:31 #185567 by pinder

Automatic angle measuring system. Very cool. Maybe achievable by using external offsets?


Angle defined by tool height and shape of the base and tool.

External offset will surely help in aacuracy. Some kind of measuring system with light system
on one side and camera on other.

Attachments:

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10 Oct 2020 08:45 - 10 Oct 2020 08:45 #185569 by rodw
Yeh, that is a cool video. I might have this a bit wrong but on my 2 axis press brake, it looks really simple. X axis is the back stop and Y I assume is a threaded acme rod each side that acts as a stop for the punch so you set the axes and press on the foot pedal which activates the hydraulics. More sophisticated machines will control the height of the back stop and position them left to right.

Setting the X axis is easy as it comes from your cad drawing so you just need to do some maths to convert the bend angle to a Y axis position. SO just get that far to start with and add the bells and whistles later.

There are a few different machine types described here icontrol.net.au/PressBrakeApps

and this video shows the settings defining a bend

Last edit: 10 Oct 2020 08:45 by rodw.
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10 Oct 2020 09:13 #185574 by tommylight
Start at 50Cm wide and a bigger one at 1M, those can be pretty much made with hand tools.
Leaving megalomania aside, lets do a simple one that will do repeatable bends with usable accuracy, 1 motor for the back stop and the hydraulic parts, then we can add lasers and bells and whistles later.
Starting with a 2.5 million $ machine is a no no.
But during planing it would be nice to think about additions so it can be easily upgraded.
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10 Oct 2020 10:02 #185581 by rodw
If you want to build something, come up with a design that can be cut on a 1200 x 1200mm (4' x 4') plasma table, say 16mm steel but use no more than 1 sheet (1200 x 2400mm)
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10 Oct 2020 10:22 #185584 by tommylight
I would stay at 1M wide in respect to us in the oldest continent.
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10 Oct 2020 10:25 #185585 by Clive S

If you want to build something, come up with a design that can be cut on a 1200 x 1200mm (4' x 4') plasma table, say 16mm steel but use no more than 1 sheet (1200 x 2400mm)


I think 16mm might be a bit optimistic for a DIY build even 12mm might be pushing it at 1200mm wide.

Just my 2c worth
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10 Oct 2020 10:30 #185587 by tommylight
He meant for parts use 16mm.
Bending 16mm is another level where only a few dare to wander. :)
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