Automatic Rebar bending machine

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30 Jul 2021 17:54 #216368 by shpatb
Automatic Rebar bending machine was created by shpatb
Hello , i hope You are all doing well .A guy showed at my workshop and asked me if I could build an automatic bending machine for steel rods for appliance in construction sites .Machine should look something like this :

I was wondering if anyone here has any kind of experience with this stuff to exchange any ideas for parts that are needed to build this kind of machine.
Kind regards 
Shpat
 

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31 Jul 2021 20:40 #216491 by andypugh
Replied by andypugh on topic Automatic Rebar bending machine
It looks like a relatively simple 3-axis machine.
It should be pretty easy to control with LinuxCNC, though I imagine that the G-code would need to be hand-coded.

I think that the rotating bend axis needs to be a true axis, then it can make other angles than 90 degrees and could also be used to make gentle curves (if the linear axis is strong enough)

More ideas (such as 3D bending here:
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31 Jul 2021 22:02 - 31 Jul 2021 22:04 #216512 by shpatb
Replied by shpatb on topic Automatic Rebar bending machine
Thanks for reply Andy.
the bending axis should be build with servomotor with reduction , or an electromotor controlled by timer. (eg, wait 3 seconds and rotate the shaft for the product size as desired )
thanks Shpat.
Last edit: 31 Jul 2021 22:04 by shpatb.

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01 Aug 2021 16:24 #216623 by andypugh
Replied by andypugh on topic Automatic Rebar bending machine

Thanks for reply Andy.
the bending axis should be build with servomotor with reduction , or an electromotor controlled by timer. (eg, wait 3 seconds and rotate the shaft for the product size as desired )

I would use a servo motor with reduction so that the bender position was controlled closed-loop as a G-code axis. 
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02 Aug 2021 14:20 #216701 by shpatb
Replied by shpatb on topic Automatic Rebar bending machine
cool , thanks for Ur time!

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31 Mar 2022 03:06 #238864 by jane song
Replied by jane song on topic Automatic Rebar bending machine
We provide a variety of steel bar bending machines, small rebar bending machine and CNC stirrup bar bending machine. The price is very cheap, if you are interested, you can visit rebarequip.com/cnc-bender-machine

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31 Mar 2022 10:36 #238887 by tommylight
Replied by tommylight on topic Automatic Rebar bending machine
The above post is considered spam, but it is about the topic and the web site seems ok, so leaving it for now.
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31 Aug 2022 18:47 #250878 by valts
Replied by valts on topic Automatic Rebar bending machine
I have stirrup bender and thinking to retrofit it on Linuxcnc. So ,if You need information about gear ratio and design . First , what is max wire diameters will be used.

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09 Sep 2022 17:56 #251558 by shpatb
Replied by shpatb on topic Automatic Rebar bending machine
Hello,
From 6mm diameter to 12 mm maximum .

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12 Sep 2022 16:20 #251747 by valts
Replied by valts on topic Automatic Rebar bending machine
Hi
Bending and wire pulling motor is 3 kw servo 3000rpm, 14,3Nm, gearbox I=21,62
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