Fwd: [New post] Open Source Pick and Place Machine

[Daniel Dumitru]

I like a lot what this fellow write make etc.

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From: "openhardware.co.za" <commen...@wordpress.com>
Date: Mar 17, 2016 11:46 AM
Subject: [New post] Open Source Pick and Place Machine
To: <dand...@gmail.com>
Cc:

peter6960 posted: "Sticking to my usual folded sheetmetal methodology: See https://github.com/openhardwarecoza/PickAndPlaceMachine    " Respond to this post by replying above this line New post on openhardware.co.za Open Source Pick and Place Machine by peter6960 Sticking to my usual folded sheetmetal methodology: See https://github.com/openhardwarecoza/PickAndPlaceMachine     peter6960 | March 17, 2016 at 9:46 am | Categories: CNC / Lasers / 3D Printing | URL: http://wp.me/p5Y0RV-8I Comment    See all comments    Like Unsubscribe to no longer receive posts from openhardware.co.za. Change your email settings at Manage Subscriptions. Trouble clicking? Copy and paste this URL into your browser: https://openhardwarecoza.wordpress.com/2016/03/17/open-source-pick-and-place-machine/ Thanks for flying with WordPress.com

[mojalovaa1]

Can you give more information , dimension , head number  .......?

Feeder design is yours ?
How much will be PCB area ? 

[Anthony Webb]

I follow Peter on google plus, he is one prolific dude!  I bought one of his Laser cutter designs too, good stuff.  More about the PNP he is building can be found here: https://plus.google.com/collection/wKbAgB

I'm keen on following his progress.  My heart sank a little when I saw the open builds extrusion wheels for the X, I've been around enough of those machines to know that it will invariably be the place you end up tweaking to keep rolling properly.  A nice set of properly pre loaded rails just has no match when it comes to reliable and accurate fluid motion.  That said, I've seen good things from my 3D printer which uses the openbuilds stuff, I just hate the feeling of being either loose and sloppy, or tight and bound/lumpy.  I've not been very successful of finding a happy medium that will stay put for any length of time.  But again, because of my exposure to the good stuff I probably expect more than the delrin wheels are capable of delivering.

[Jason von Nieda]

Nice looking design. Looks like there are still lots of details to fill in, but I like the folded sheet metal idea. This is used to excellent effect in my Lulzbot Mini 3D printer and it's a manufacturing process I'd like to use someday.

Jason

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[Peter van der Walt]

Thanks for the kind word guys!

Shoot if you have questions, i'll be building some more today, i'll make sure to cross post pictures here.

@Anthony (; you know I love my OpenBuilds (;

[Anthony Webb]

Hey Peter, OpenBuilds isnt half bad, a lot of the BOM for my machine can be sourced there.  The concept I definitely love, I'm a bit spoiled with rails now though :)  I am curious though why you decided on rods for the Y for this one?  Other qquestion I had was regarding the feeders, what width of tape are you targeting?  I love to see your designs come alive, do keep us posted!

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[Peter van der Walt (Gmail)]

This is a very quick prototype,  and i had just one length of 2020 v slot left.

But i had a few of the sc12uu and shf12s left from the opencnc-za days.  So consider this a 'slapped together from what I had at hand'  design choice.  If you look at the sketchup  and so a unhide all,  you'll see I actually modelled both,  a 12mm bar rail and a vslot rail for Y.  The Y carriages has holes for both sc12uu and for mini v wheels. The base has a row of 5.2mm holes for vslot and holes for shf12 (so dual purpose everything) 

Mark is sending me some 2040 vslot so when they arrive i'll actually strip off the 12mm and change Y to vslot too (just to upset you a little more (; lol)

On the 2mm mild steel,  the mini v wheels have just enough natural springiness that it becomes easy to tweak the preload.  But take any statements i make now in light of 'its not pick and placing yet)  so i may backpedal on any statements hehe

Looks like my Juki nozzle and nema8 that Varun S sponsored is at the postnet office,  will go pickup today (:

Peter

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[Peter van der Walt (Gmail)]

Tape width: i have 13.5mm between uprights.   In the base there is cutouts for inserting 3d printed 'guides'  to tweak the width per rail. 

On 19 Mar 2016 06:38, "Anthony Webb" <anthon...@gmail.com> wrote:

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[Jason von Nieda]

Hi Peter,

Welcome to the group, and thanks for stopping by! Love the build and am very jealous of your ability to quickly get bent sheet metal parts!

Are you planning to use OpenPnP for the software side, or do you have other plans? Have you chosen a motion controller, cameras, solenoids, pumps, etc?

Jason

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[Peter van der Walt (Gmail)]

Motion control will be my own smoothieware based controller (also see the wordpress/googleplus/github.com around that)  but the rest of it is also still up in the air.  Thats why i go in hardware first.. Having a platform to experiment on makes it easier to evaluate options :)

I have cutouts on the base for a bottom view camera (;

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[Peter van der Walt (Gmail)]

Quick test fit of the pcb clamping https://plus.google.com/+PetervanderWalt/posts/X8yMpJpyeXF

And view of the machine https://plus.google.com/+PetervanderWalt/posts/QN6hv1PKHan

[mojalovaa1]

Peter  very nice job , you are cut still to laser ?

I m little confused  with yours feeder , you are sure that you have enough space  between  tape for normal put tape to machine  , and all so  cover puller  seems to me  that will be hard  assembly it ?

On my video you can see that have allot space  , and need  more place that you are stay , can you make more  image for that part please ? https://www.youtube.com/watch?v=Yk2LwsnRq_A
For pull tape you will use actuator with needle ?

[Peter van der Walt (Gmail)]

Tape advance for this version is with the needle in dragging it forward.  The rest of your comment,  i had trouble understanding unfortunately.  I planned all my sizes in CAD

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[Peter van der Walt (Gmail)]

Juki nozzle and robotdigg adapter arrived today.  I have runout thats visible by eye.  Not on the motor+coupler side.  But the grub screws holding the juki in + o-ring causing a squishy surface + too much play in the hole for the nozzle.   Not unusable,  shouldnt be enough to offset a 0603 (reflow surface tension is great.  I currently tweezer 0603s, this cant be worse) 

Pic attached

[Ray Kholodovsky]

Try without the o ring. You should still be able to maintain enough suction considering you'll be using a compressor. It's important that the nozzle seat against a known square surface.

[mojalovaa1]

Peter , I follow yours work  , for now is very good  job :) .

The best option is  run rotation and see if nozzle have  offset .
If rubber have space then you can use electrical insulating tape  before put rubber ring  , that is for testing of course .

[Peter van der Walt (Gmail)]

Without the o ring it seats better yes.  I wont be swopping nozzle mid job,  so a liquid sealant,  silicon gasket may be an option

On 22 Mar 2016 14:04, "Ray Kholodovsky" <rayk...@gmail.com> wrote:

Try without the o ring. You should still be able to maintain enough suction considering you'll be using a compressor. It's important that the nozzle seat against a known square surface.

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