Quote from securesupplies on May 6th, 2013, 07:57 AM

Quote from ~Russ/Rwg42985 on December 20th, 2011, 02:49 PM

hello everyone!

this does not help me one bit sorry.
I am looking for a DXF file for CNC milling or 5 axis lathe.
I am to a computer wiz like you guys are!

cheers:angel:

Hi, so you are really going to build the cell? :) I have the AutoCad software and could perhaps try to draw it up, but i would need help with the dimensions and thread sizes and so on.

//pwrpro

Yes, it needs to be built,.exactly as Stan had it.
I am very serious about getting this built as I have the contacts for the CNC and the Material, and Fastening ect.
My advise would be if you have not done this work before, not try on the build.
this one needs to be done by a experienced CAD CAM engineer user,
as it is paramount for detail and expensive to build.
If this is to be used by everyone on open source. it must be done Just as Stan got it Built.

No guessing!:D


Kind regards

Adam

Hi, so you are really going to build the cell? :) I have the AutoCad software and could perhaps try to draw it up, but i would need help with the dimensions and thread sizes and so on.

//pwrpro[/quote]

Ok, i understand that the quality and the correctnes is very important. I'm a educated CAD drawer, so drawing advanced things off blueprints is not a problem. I have however not the experiens of designing and dimensioning parts. The problem is then of course that no original and absolute specs for the cavity exists.

One way of doing it would be to get a dialog going here on the forum for dimensions, nessecary clearance, thread drill sizes and so on in order to make an fail safe drawing.

Regards,
pwrpro

I agree budlooking at most of the unit, The Tolerances will not be to important due to the O-ring seals.

its not like there is any moving parts like bearings and such like.

Importance is everything lining up with each part.


looking at most of the unit, The Tolerances will not be to important due to the O-ring seals.

its not like there is any moving parts like bearings and such like.

Importance is everything lining up with each part.

Quote from pwrpro on May 6th, 2013, 06:02 PM

Ok, i understand that the quality and the correctnes is very important. I'm a educated CAD drawer, so drawing advanced things off blueprints is not a problem. I have however not the experiens of designing and dimensioning parts. The problem is then of course that no original and absolute specs for the cavity exists.

One way of doing it would be to get a dialog going here on the forum for dimensions, nessecary clearance, thread drill sizes and so on in order to make an fail safe drawing.

Regards,
pwrpro

===========================================
Great  to have you here also

please email me ,

danieldonatelli@hotmail.com

and I will forward files converted for you to advance it more in cad
please and post.
your versions every advance helps

all cad design , development
 drawings welcomed along with more 3d and assemble work
================================================
each part advanced is important to us  to start building

as it advances the tech proto types can be cnc milled or 3d printed to advance it

email
Dan
I have a list for sharing to tech colleges for there projects  etc.
 

Quote from securesupplies

Great  to have you here also

Thanks :D !

Ok, so I have started to draw the cavity and you can see the progress so far in the pictures below.
[attachment=3722]
[attachment=3723]


I have one question for now, does anybody know what type of bolts that were used for the cavity and what the necessary drill size is for tapping of the holes? (I guess that you have to tap the threads manually)

No all threads can be tapped by CNC
I am going to have to make an educated guess on this one as there are a lot of info left out of the drawings Don made.

From looking at the drawings and Pictures they are 304 S/S M5 4.80 metric fine thread drill size will be 4.3 for the 32 holes around the base.

thread and drill size is not to critical if it is not exact to Stan's

very possible to go to a M6 if need be.You guys over there ok to use metric?

guys,

here is the work Chris has done.

i believe the only part we are missing is the base. i don't think we got it done. please use as reference these should be correct:

Thanks for posting guys and carrying on the work! once your drawings are done i will post on the website for downloading.

attached is an unfinished set ( i think) of drawings ( i think the one base is not done or at least not dimensioned???) that should be all correct to the dimensions of the original cell.

have a look and re post if all correct please.

Sorry it took so long to respond...

~Russ

Quote from ~Russ/Rwg42985 on May 9th, 2013, 02:30 AM

guys,

here is the work Chris has done.

i believe the only part we are missing is the base. i don't think we got it done. please use as reference these should be correct:

Thanks for posting guys and carrying on the work! once your drawings are done i will post on the website for downloading.

attached is an unfinished set ( i think) of drawings ( i think the one base is not done or at least not dimensioned???) that should be all correct to the dimensions of the original cell.

have a look and re post if all correct please.

Sorry it took so long to respond...

~Russ

Thanks very much Russ ,I was asking for a very long time for those files...there are awesome ..very detailed work,thanks to Chris as well!B.r.!

How an earth do you MOVE the pieces in solidworks,i found some wird arows but does nothing,thanks

Quote from ~Russ/Rwg42985 on May 9th, 2013, 02:30 AM

guys,

here is the work Chris has done.

i believe the only part we are missing is the base. i don't think we got it done. please use as reference these should be correct:

Thanks for posting guys and carrying on the work! once your drawings are done i will post on the website for downloading.

attached is an unfinished set ( i think) of drawings ( i think the one base is not done or at least not dimensioned???) that should be all correct to the dimensions of the original cell.

have a look and re post if all correct please.

Sorry it took so long to respond...

~Russ

Awesome work there Russ/Chris!! :) Seems to me as the only parts missing is the top blow off valve cover and the very top metal piece. I decided to draw them up and you can see them in the pictures below.

[attachment=3726]
[attachment=3727]

Trethowen,
Going metric is Ok for me, but all the holes from Russes/Chris drawing is for imperial type threads. Can the CNC tap both types?

As for the material requirements it seems so far that it is:
7.5" roundstock Delrin/Acetal
6.5" Outside x 5.5" (5.48"?) Inner Delrin/Acteal Tube (Do they sell it in tubes?)

The CNC machine will put in any thread you give it, so it should be ok, however for  those of us over the other side of the world how don't use imperial sizes very much, it may be a good idea to list an alternative thread tape and drill size,
just a thought.

The Acetal for the 7' tub will me machined out with a lathe as yes they do have Acetal / Derlin in that size as I when down and checked today.

The reason Stan got the base and tub made separately is due the depth.
No CNC mill can get down that deep. and still do the 11 holes.

Quote from pwrpro on May 8th, 2013, 10:12 AM

Quote from securesupplies

Great  to have you here also

Thanks :D !

Ok, so I have started to draw the cavity and you can see the progress so far in the pictures below.




I have one question for now, does anybody know what type of bolts that were used for the cavity and what the necessary drill size is for tapping of the holes? (I guess that you have to tap the threads manually)

Job well done, very good to have the share and post Progress!!

Look forward to bringing it to life@!

danieldonatelli@hotmail.com

PLease post  

CNC Cad File Set ,
varying formats  
try to follow and keep 3d print files valid with cad updates
that why proto types can be printed and cnc guys
have more and faster uptake to get same
result

step by step as you do it so we can try and trail it to follow

PLease  
version number or a date on files so we keep going on passing them
forward here.

Great progress Dan

RIP STAN

Quote from pwrpro on May 9th, 2013, 03:50 PM

Quote from ~Russ/Rwg42985 on May 9th, 2013, 02:30 AM

guys,

here is the work Chris has done.

i believe the only part we are missing is the base. i don't think we got it done. please use as reference these should be correct:

Thanks for posting guys and carrying on the work! once your drawings are done i will post on the website for downloading.

attached is an unfinished set ( i think) of drawings ( i think the one base is not done or at least not dimensioned???) that should be all correct to the dimensions of the original cell.

have a look and re post if all correct please.

Sorry it took so long to respond...

~Russ

Awesome work there Russ/Chris!! :) Seems to me as the only parts missing is the top blow off valve cover and the very top metal piece. I decided to draw them up and you can see them in the pictures below.




Trethowen,
Going metric is Ok for me, but all the holes from Russes/Chris drawing is for imperial type threads. Can the CNC tap both types?

As for the material requirements it seems so far that it is:
7.5" roundstock Delrin/Acetal
6.5" Outside x 5.5" (5.48"?) Inner Delrin/Acteal Tube (Do they sell it in tubes?)

nice work!!

we had the top block but... we were just going to use a simple blow off.

but im glad you got it done!!

could you please make a single folder/set of drawings in all the formats ( like my files were... please do ST files also if you can...) so we can distribute them... that would be grate! i will make a video once we have it all done!!!!

you guys are grate! nice work!!

~Russ

Thanks guys!!!:):D Appreciate it! Working as fast as i can:)

I will post all the files just as you did when it is finished + different types of file formats (.dxf, .stl, .sat) Name more if you have need another format.

Trethowen,
I make all the thread holes for metric now. It looks now as it mainly will be M3 and M5 or M6. Do you also want the O - rings as metric?

As for the blow off valve i was first thinking to make the cover to simply sit over a purchased one. But did Stan make his own? Like with a valve and a spring?

I tried to make some basic calculations for a blow off valve and came up with this. Don't take it as correct calculations as I'm not sure they are. It would be great if someone could verify this or point out the errors.

Calculations for blow off at 20 Psi (all SL units):

p = F/A (p = pressure in pascals, F = Force in newtons that applies to the area A)

20 Psi = 137895 pascal

The area that affects the blow off valve is (.5" dia hole)  = 0.000126 m2

The force that act one the valve is then (F = p*A) = 137895 * 0.000126 = 17 newton

In summary: The spring need to start compressing at 17 newton applied. That would be around 1.7 kg or 3.7 lbs. Anybody know with what specs they sell springs?

you can buy just about any size spring including force,
1.7kg sounds about right,
Thinking it must be a S/S spring though due to corrosion!?!
Don't no how long it would last if it was Stainless Steel as it is brittle when it comes to moving parts.???

The O-rings will me 3m as common size, 1.5mm deep  x 3mm  grove on each part.

Ones the unit is finished and built, we can go down to your local O-ring specialist and get them to help you fit all the appropriate O-ring sizes.

All O-rings are listed by a common code and one we have the correct fitting O-rings,
then one of us can go ahead and list the part number code up in the plans, along with any other miscellaneous parts needed to complete the cell.

All good

Russ,did Criss lock the parts up in solidworks because i cant move them.Tried different solidw versions but still cannot move parts.I want to move them so i can asemble the cell.In the end after hours of trying to asemble it ,i gave up and converted them in . skp'' files and mached perfectly all the pieces except the outside tube,it is too thick...no problem though just leting you know.Thanks!

Quote from adys15 on May 11th, 2013, 09:26 AM

Russ,did Criss lock the parts up in solidworks because i cant move them.Tried different solidw versions but still cannot move parts.I want to move them so i can asemble the cell.In the end after hours of trying to asemble it ,i gave up and converted them in . skp'' files and mached perfectly all the pieces except the outside tube,it is too thick...no problem though just leting you know.Thanks!

Here is all the parts from Russ and Chris assembled. Nothing is changed.

Quote from pwrpro on May 11th, 2013, 10:44 AM

Quote from adys15 on May 11th, 2013, 09:26 AM

Russ,did Criss lock the parts up in solidworks because i cant move them.Tried different solidw versions but still cannot move parts.I want to move them so i can asemble the cell.In the end after hours of trying to asemble it ,i gave up and converted them in . skp'' files and mached perfectly all the pieces except the outside tube,it is too thick...no problem though just leting you know.Thanks!

Here is all the parts from Russ and Chris assembled. Nothing is changed.

Thanks, you also make them move ,Aleluyah ....

Update time:)
I have tried to design the safety valve mechanism, please look at it and see if it will work reliable.

[attachment=3731]
[attachment=3732]

It's designed for 1.5 mm dia O - rings. I used this chart to get the width and deept http://www.oringsusa.com/html/gland_design.html I used the "Liquid Gland" chart.

As for the spring I don't think SS is required. The valve should only be activated in case of failure of the electronics, and thus not allot.

EDIT: The inner O -ring grove is to narrow, but it have been fixed now.Safety Valve Top Cap.
Version 2013-05-11
Metric version

Holes are intended for use with M3 Socket Cap screws 15 mm long.

Quote from pwrpro on May 11th, 2013, 02:01 PM

Update time:)
I have tried to design the safety valve mechanism, please look at it and see if it will work reliable.




It's designed for 1.5 mm dia O - rings. I used this chart to get the width and deept http://www.oringsusa.com/html/gland_design.html I used the "Liquid Gland" chart.

As for the spring I don't think SS is required. The valve should only be activated in case of failure of the electronics, and thus not allot.

EDIT: The inner O -ring grove is to narrow, but it have been fixed now.
Safety Valve Top Cap.
Version 2013-05-11
Metric version

Holes are intended for use with M3 Socket Cap screws 15 mm long.

OK rocking and rolling

great job guys ,
liked the previous post tidied up a lot,
great job!

Dan

Quote from securesupplies on May 12th, 2013, 07:15 AM

OK rocking and rolling

great job guys ,
liked the previous post tidied up a lot,
great job!

Dan

Thanks Dan!

After talking to Trethowen I have redesigned the Safety Valve Top Cap for M4 screws. I have also renamed it to Pressure Relief Top Cap, as it is a more appropriate name and also complies with the name on Russ's and Chris drawings.

Please start looking the parts over and report any errors, check if it fits together, if clearance is missing, 3D print...

Pressure Relief Top Cap
Version 2013-05-12
Metric Version
304 S/S material

Holes are intended for use with M4 Socket Cap screws 30 mm long.

Cathode
Version 2013-05-12
Metric version
304 S/S material

Anode
Version 2013-05-12
Metric version
304 S/S material

way cool guys, cant wait to have a look.
just need to down load a better CAD program on this computer.
Any suggestions?

Quote from Trethowen on May 12th, 2013, 08:11 AM

way cool guys, cant wait to have a look.
just need to down load a better CAD program on this computer.
Any suggestions?

You could try Blender, its completely open source: http://www.blender.org/