Very interesting alu. table #68 - Kirov, Russia

[obuhus]

Greetings to all builders of MM.

Separate many thanks to Gerald for its magnificent idea.

I Dmitriy from Russia. I too have decided to construct the MM.

All has begun in the end of the last year when I have come across this site. I long read, looked, studied... Has then solved - I will build.

My MM is not finished yet, a photo and explanatories I will gradually spread. I think, there is no sense to tell all as I has welded or painted details - with it any more will not surprise builders of MM. I wish to show some my non-standard ways which, I hope, own decisions in MM building will help other builders to make.

[obuhus]

April 2009. It is the first step on a way of construction of my MM. I have decided to buy only 8 pieces of V-bearings. On axis Z linear bearings will be established.

[obuhus]

July 2009. Test of manufacturing a rail... The result has not pleased.

[obuhus]

July 2009. New attempt - it is similar to the truth... Has started to build axis Y.

[obuhus]

July 2009. New experiments with manufacturing a rail.

[obuhus]

September 2009. Has begun partial assemblage of brains MM. For cooling G203V has made decision to use fans from the computer. Model of fans AMD Socket 754, 939, 940, AM2, F (Igloo 7223 series). A red wire +12V, black wire GRD. The yellow wire has removed.

I plan to do the fourth axis, therefore has left a place for the fifth G203V.
By the way recently I have received it :)

[javeria]

Think there will be no need of the fans, try first without running the fans.

[obuhus]

September 2009. Has begun assemblage belt-drive.
Many thanks to Gerald for the help with step-motors. After long searches and reflexions I have decided to go the checked up road, but have a little changed a traditional design of the mechanism of a reducer.
Reducer classical 3:1 (pulleys LS27T5/20-2, LS27T5/60-0, a belt 16T5/355). Has more low loaded drawings in dxf. It is not accurate a little - forgive, I only have started to study AutoCAD.

[sailfl]

Dmitiry,

Looks like you have a great start and Welcome to the site.

Though it may seem like you need to have lots of fans to combat the heat, the one fan works find. I agree with Irfan.

Your rails and belt drives look great. Keep taking pictures, we like to see what others are doing.

[obuhus]

Think there will be no need of the fans, try first without running the fans.

I plan to combine control-box and the computer in one case. The current of windings of motors 4А - is to that to heat up.

And in general I like all to do thoroughly :)

[Gerald D]

Great pictures, great thinking, great progress! Thanks!

[javeria]

I love your reduction drive - good thought given to it.

[kaartman]

Welcome Dmitriy
Great pictures, love to see more in future

[Robert M]

Hi Dmitriy, welcome aboard and as a new builder myself, I’m wishing you all the best and a smooth build with your project. When are you hopping to finish it, you seem well advanced ? Amicalement, Robert ;)

[obuhus]

Greetings to all! Thanks for kind words. :) To finish building I plan about New year. Time has not enough - the basic business demands attention.

[Doug_Ford]

Dmitriy,

Whether or not you need all of those fans and heat sinks, it looks REALLY sharp. Kind of like a big V8 engine under the hood of a small car. I like it. Good luck with everything.

[javeria]

G' I think seriously we should standardize this design for the reduction mechanism. Its metal laser cut welded and no bends reqd and can order a special shaft and pinion combined. Also we can avoid all nut's by tapping the motor plate by making it 6mm thk, that way we can use screw of upto M6.

ok nuts are reqd to adjust the belt tension a bit :)

[Gerald D]

Dmitriy's design seems to have all the bearings (or one wide bearing) on the outboard side of the reduction unit.

[javeria]

yes thats what I like too - hmmm is that wrong, ???? I feel it would be ok - I think one more of our forum member has done this already.

[obuhus]

Dmitriy's design seems to have all the bearings (or one wide bearing) on the outboard side of the reduction unit.

Gerald, you are confused with length of a shaft from the bearing to a gear wheel? In my case the shaft is made of stainless steel. For a usual steel there is more reliable configuration, but more bulky.

[Gerald D]

I am a little bit worried about the flexibility of the shaft. It is quite a long distance from the bearing to the pinion gear. There is no real difference in the flexibility of stainless steel compared to usual steel - the vibration frequency will be the same. It will be interesting to see if you get good cutting results.

[bradm]

Would something like a simple sintered bronze sleeve in the opening by the pinion gear help or hurt?

[obuhus]

I am a little bit worried about the flexibility of the shaft. It is quite a long distance from the bearing to the pinion gear. There is no real difference in the flexibility of stainless steel compared to usual steel - the vibration frequency will be the same. It will be interesting to see if you get good cutting results.


Gerald, I thought of it. For myself I have chosen a variant with stainless steel - there was at hand suitable preparation. And design more graceful. But the second variant obviously is stronger. And quality of processing we will see when will earn :)

[Gerald D]

Would something like a simple sintered bronze sleeve in the opening by the pinion gear help or hurt?

It would remove the concern about flexing. But then that bronze sleeve becomes the most heavily loaded bearing in the system and needs to be upgraded for long life. Which puts you back to having a standard bearing there in the first place.

[obuhus]

It seems to me, I have thought up an absolute variant of a reducer. It has a possibility to protect a belt and pulleys from a dust. In drawing I have designated a cover a blue line.

[javeria]

that is a good design - but for motors with different height it might be problem. so need to decide what depth it will be.
may be that can be left as a motor dependent variable.

also since the plate is laser cut on the pinion side a flange and bolt arrangement might not be necessary on the shaft case, we can just have the casing of the shaft match with the hole in the plate and make it go thru.

RGDS
Irfan

[obuhus]

Greetings to all builders of MM!
Time on former catastrophically does not suffice.
But there is a small progress.

[obuhus]

And here it is new design of mine cut&grind-skateboard. It is similar to the monster, the truth?

[obuhus]

And you know, this piece works! And with good results! The rail has identical height on all its length.

[obuhus]

This scheme explains a mode of functioning of my design.

[Gerald D]

Interesting, and good result!

[obuhus]

The main thing - is easy to work and stable result!
I now load video on youtube. It will be loaded - I will lay out the reference.

[obuhus]

And here cut&grind-skateboard in a position of 45 degrees. And result.

[obuhus]

Here a videoclip: http://www.youtube.com/watch?v=tnAmCa7islE

[Castone]

That is some very nice rail grinding.

[riesvantwisk]

Dmitry,

I just came across your thread here and noticed that in the pictures of post 6 (I think) you ground the shielding if the control cables from the BoB to the drivers on the cooling plate. This is incorrect. Officially they should be grounded on the BoB site, see this post http://www.mechmate.com/forums/showthread.php?p=2669&postcount=2

great build, I like to pictures, and I wish my rail grinding was that good!

Ries

[Gerald D]

Ries, there is nothing wrong with the way in which Dmitriy is grounding his Bob shields. Do you want to discuss it further in another thread?

[KenC]

Very nice grinding!

[Claudiu]

Hi Dimitry,

You built yourself a rail grinding monster !:) ...but with good results.
Nice building so far.
Good luck!

Greetings
Claus

[obuhus]

Thanks all for kind words:) Here an end result. X-rails are completely finished. Y-rails I will do again - better...

[obuhus]

And it is my relay board and its scheme.

[riesvantwisk]

@Gerald & Dmitry,

I think I did see that the shielding of the control (BoB to Drivers) is attached to the cooling plate of the drivers, I cannot enlarge the picture to confirm. it would be better to ground (put on the 0V side) the shielding on the Bob side.

if you want we can discuss this on a other thread, I am far from a authority though in this subject and haven't been doing electronics design for over 12 years.

Ries

[obuhus]

@Gerald & Dmitry,

I think I did see that the shielding of the control (BoB to Drivers) is attached to the cooling plate of the drivers, I cannot enlarge the picture to confirm. it would be better to ground (put on the 0V side) the shielding on the Bob side.

if you want we can discuss this on a other thread, I am far from a authority though in this subject and haven't been doing electronics design for over 12 years.

Ries

Greetings, Ries.

I do not understand, what problems? Try to draw a wiring scheme of it.

[riesvantwisk]

Dmitriy,

shielding of signal cables should be done at the signal source, in this case on the BoB (PMDX) side, not on the gecko side.

Shielding the signal cable on the cooling plate of the gecko driver might even introduce more nasty effects (EMI) because usually this ground is what's called dirty.

Since the ground of the power supply is attached there, and the gecko's are connected to the power supply (high current) this might introduce more EMI then not shielding at all.
Also EMI in the ground plate might come from external interferences outside of the box it's not 0V! and might contain any other fluctuations from for example plasma welders, drills, saws etc.. So don't use a dirty ground for shielding signal cables.

Beside, from computer tot BoB is electrically connected, but from BoB to Gecko it's isolated using opto couplers (on the gecko side) . So it's best to keep this circuit as much separated as possible.

Lastly, and this is what gerald also mentioned, reducing EMI in your signal cables can also be archived by:

1) Not lying the signal cables and high power cables (110V, gecko power, stepper cables) close next to eachother in one line, it might look better, but it can introduce a lot of EMI in signal cables. Lay thm as far away from each other as possible, left, rights side of your control box for example and in separate cable ducts to insure separation.


2) If you do need to cross (in space) signal cables then do so in a 90 degree fashion, so
they cables don't 'see' each other. This technique is also frequently used in RF circuits where coils need to be layed out 90degrees from each-other to minimize interference.




Ries

[obuhus]

Ries, many thanks for a competent substantiation. I think, already soon I can check up it in practice :) And unnecessary contact pieces to cut off is never late.

Dmitry

[obuhus]

27-04-2010.
Greetings to all builders MechMate.

After a long break I had a possibility to continue work on the machine tool. Result on a photo.

[obuhus]

27-04-2010
Time has come to take in hands this...

[Kobus_Joubert]

I like the wind-up piece between the table legs.:D
Is RED the official colour of MM's in Russia.... looking smart

Those Motion King's are looking good on the belt reduction

[obuhus]

Is RED the official colour of MM's in Russia.... looking smart



Red and Cherry :)

[timon]

Дмитрий молодцом !!! Я с товарищем такой же собираю. Ток покрашу по другому.

Dmitry the good fellow!!! I with a companion same collect !!!Only I will paint on another))))))

[domino11]

Nice Work Dmitriy!

[KenC]

Almost there! Keep it up!

[MetalHead]

Looking Great !!!! Keep up the great work !!!

[cvriv.charles]

Your shop is scary:eek:

[liaoh75]

Dmitriy, your build is looking real good. Those belt drives are nice and looks like a very polished design.

Charles, I was just about to say the same thing but my shop looked a little like that until I cleaned it out. I'm sure a fresh coat of paint on the wall would make a huge difference.

[obuhus]

Greetings to all!

It seems, I have finished a layer pad of wires "on a paper". Here my scheme of MM
http://img-fotki.yandex.ru/get/4301/obuhus.0/0_40daa_aaae94db_orig

[javeria]

Dmitriy, what software did you use to draw out this layout, I haven't gone thru the circuit- but a good effort i feel.

[obuhus]

Hi, Irfan.
One of my trades - the designer. Therefore I professionally own Corel Draw and Adobe Phonoshop. In most cases I use these programs - for me so more conveniently and easier. Also I use AutoCad and many other programs.

[javeria]

Thank you Dmitriy, now you can cut those beautiful designs on corel with the MM

[PEU]

That drawing should be part of the mechmate parts, beautifully done!

[obuhus]

As I did relay and laser boards. The small instruction in pictures.

[Sergio-k]

Dmitriy that's a professional job you've done there, congratulations.
I'm thinking of buying a Roland allready :D

[vishnu]

I think we have more Pro's than Rookies here, very nice work. Keep going :)

[smreish]

...or you can ask one of the members that has a MM already to machine the single layer board for you and not have to touch the chemicals! Just thinking....:)

[obuhus]

30-06-2010
It is finished "kitchen table" and I have seen the first movement of the motor of my MM.

Link to video (30Mb)
http://www.youtube.com/watch?v=WUHlVGlatcA

[obuhus]

And a few photo of my "kitchen table"

[smreish]

Very clean and well executed. Look at that custom standoff!

[obuhus]

08-07-2010.
Small progress in building.

[vishnu]

Nice clean design & execution, would love to see them kick dust.

Vishnu

[Gerald D]

That is very neat!

[MetalHead]

Man that looks awesome. Cool work on the circuit board.

[JamesJ]

Looks great, care to share the circuit?

[Gerald D]

Look at his 2 June post.

[JamesJ]

Thanks

[obuhus]

Greetings to all!

I am very glad that my work was pleasant to you. I have a little changed the scheme and have checked up on the mi MM, all works.
Here I spread the total scheme, it is possible to someone will help.
http://img-fotki.yandex.ru/get/3416/obuhus.0/0_4275f_daf95000_orig

Success to all in building MM!

[obuhus]

I have excluded button E-stop on Z-car. I think it difficultly to use, when the spindle is in the table centre. To reach edge Y-car much easier.

[Gerald D]

Sometimes we are walking on top of the big table while the machine is working, that is why we have buttons on the small car.

[smreish]

...and when the machine is cutting near the end of the table (where most small part work happens) the Car based Estop and control buttons are essential to daily operation. Actually, come to think of it, I can't remember the last time I used the end buttons!

Just my 2 cents.

[obuhus]

Greetings to all again.

After long think and experiments I have stopped on this variant of mine Z-axiz. E-bay - a great thing! I have bought there linear bearings and the ball screw.

Full travel of mine Z-axiz makes 250 mm. I plan to process on the 4-axiz details to 500 mm in diameter.

[cncb]

That's one heavy duty z axis!

[obuhus]

Greetings to all.

What do you think about this (http://www.usovo.de/shop/product_info.php?info=p528_Toolchangerwsystem-Kress-FME530--FME800--FME-1050.html) ?

Toolchangerwsystem Kress FME530, FME800, FME 1050

# housing made of Aluminium 7075, hard anodized
# spindleshaft made of stainless-steel
# double spindle ball bearings (Hybrid-Ceramic, class P4, Typ HY S 61904 C TXM P4 UL)
# concentricity 0,01mm
# fine balanced
# holding force on the cone 200N
# SK15 toolholder ER11 Collets (1-8mm)
# operating pressure 8 bar
# fixing with 43mm Euroneck
# driving speed up to 28.000 rpm
# complete diameter 59mm
# to be suitable for FME30, FME 800 und FME 1050

599,00 EUR
incl. 19 % Tax excl.Shipping costs

[danilom]

Most powerfull kress is 1050Watt, you could use it for engraving, but for some serious cutting you need more power.

[cncb]

It would be a shame to see you build such a stout machine and z axis to use such a small/low powered spindle.

[IN-WondeR]

Thatcher is a beautiful z slide. Any chance og getting Some high res photos by mail? Could've be a very interesting design to use on my new creation. It looks very sturdy. And the travel is perfect.

[obuhus]

It would be a shame to see you build such a stout machine and z axis to use such a small/low powered spindle.


I don't plan to use Kress as the basic spindle. I have shown an additive on Kress with automatic change of the tool. http://www.youtube.com/watch?v=_kp0SAeR-Kg

There can be use as an additional spindle for finishing processing at 3D.

[obuhus]

Kim, No problem :)

http://img-fotki.yandex.ru/get/4603/obuhus.0/0_46b54_606c885a_orig
http://img-fotki.yandex.ru/get/5205/obuhus.0/0_46b55_d93f8e5b_orig
http://img-fotki.yandex.ru/get/4509/obuhus.0/0_46b56_55c85c1_orig
http://img-fotki.yandex.ru/get/4604/obuhus.0/0_46b57_ddd7f337_orig
http://img-fotki.yandex.ru/get/5404/obuhus.0/0_46b58_a8d08d97_orig
http://img-fotki.yandex.ru/get/4900/obuhus.0/0_46b59_3ab54e58_orig

Z-axis It has turned out really strong, but also heavy.

[IN-WondeR]

Dmitriy

That is a great set of pictures.
The simplicity of the z-slide is amazing, and I would have wished that I had thought of something like this before I made my current z-slide.
But this will be so simple to make, that it will not be a problem to make it.

[obuhus]

Kim.

Here not all so is simple. I regret, but metal rolling has no ideal geometry. Welding too can't be exact. Therefore the pipes and a channel, welded together, should be milled. It not is accessible to all.
It is one of variants...

[obuhus]

Greetings to all!

I have progress in building MM.
Today I the happiest person.
MM has started to move!

I want to tell to Gerald of a word of the big gratitude!

You do people happy!
Thanks you big!

[obuhus]

Here video of the first cut.
http://www.youtube.com/watch?v=qPF52sH_R9A

[KenC]

BRAVO!
Congrats!

[Gerald D]

I am proud of you Dmitriy!

[fanefane]

Congratulations
красиво сделано, браво!

[MetalHead]

Great looking Machine !!! You get Number 68 !!!!!

[domino11]

Congrats Dmitriy! :)

[bolingerbe]

Great looking machine

[jhiggins7]

That's one beautiful MechMate. Congratulations on completing your build and earning Serial #68.

Here is the Updated Builder's Log (https://spreadsheets.google.com/ccc?key=0AttqjIPMBEXKcExveGc4d3U0V25zQmMyX1U1eUVhU Xc&hl=en).

Please review your entry and let me know any changes you want to make. Also, please let me know the "cutting" demensions of your MechMate for the Builder's Log.

[Oleks]

Hi Dmitriy
What iron profile did you use for Y gantry cross member tube (10 20 440 )?

[obuhus]

Oleks, i used a pipe 50х100х3 mm. Chose from this that was on sale.

[Rad Racer]

Nice job Dmitriy! Very clean build, excellent wiring job.

Looks like you are making some model airplane ribs:)

[obuhus]

Greetings to all!
Thanks for kind words, I are very pleasant :)
However, too early to have a rest. Ahead still it is a lot of work.

And this photo of my first test work:

[javeria]

Those are highly acceptable cuts!

Have fun with your Mechmate!

[obuhus]

Greetings to all again.

I continue to study CNC programs and work methods.
Here the first experiment in 3D. Certainly, for finishing processing I used a wrong mill. But I am happy even with such result.

[liaoh75]

Beautiful work there Dmitriy!

[KenC]

nice! how long did it take?

[Kobus_Joubert]

Nice. Get a 3mm Ballnose bit to do the final cut. Rough out most of the wood with a 6.35mm straight cutter and then final with the 3mm ballnose (round) bit.

[obuhus]

Vector art 3D Machinist has told 3 hours and 11 minutes, but it seemed to me faster.

[KenC]

Its about what I guestimated... 3D reliefs really kill time... very difficult to make much money with it... but they sure are beautiful!

[obuhus]

I think, in this case we shouldn't sell machine time. Unique custom 3D-product should cost much. For example: the violin of the Stradivari - one in the world and unique, therefore is invaluable. Our work on custom order - one in the world too, such isn't present another, in shop it not to buy. Therefore costs much. So I think :)

[jhiggins7]

Very nice wook Dmitriy! We appreciate you showing your results.

[Robert M]

Then this great work of your and others to come should be called “ Dimitriyus” :p

[Surfcnc]

Hi Dmitriy

I have yet to congratulate you on the fine machine you have constructed, so well done.
The quality of the work it is producing is great and I am certainly looking towards your future posts of any new work you might do.

Well done
Ross

[obuhus]

Greetings to all.
Yesterday I MM worked on the first commercial order. Here small video of process and a photo.
http://www.youtube.com/watch?v=EuXdhD9tdAE

My spindle isn't controling by program Mach3, therefore on screen Mach3, in a zone "Spindle", I have placed two buttons Z-Zero and X-Y laser zero.
This video shows, how all occurs.
http://www.youtube.com/watch?v=-6Xwcp-kd5A

And this video shows that occurs at this time on screen Mach3 program.
Watch for DRO and the mouse cursor :)
http://www.youtube.com/watch?v=1lP24CO4bCU

Time has come to put in order the remained wires, to make dust-foot and a cyclone, to make a good table together vacuum system.

Ahead the big work :)

Good luck all!

[obuhus]

Greetings to all!
Happy New Year! Happiness, love, health and successful building MechMate!

I continue to be improved in processing of different materials on the MM. Here test model dust-foot.
As I plan to make a table of an aluminum tube 100х40х4. Here so, approximately, it will look.

[jhiggins7]

Dmitriy,

Beautiful work...very creative dust foot. Your MechMate is very impressive.:)

[Surfcnc]

Gidday Dmitriy

As usual your standard of work is excellent.
Interesting the way your dust foot collects the dust through a cavity in the foot itself.
It also seems that the rare earth magnets are a must have for ease of access to the cutter in most dust foot designs.

Regards
Ross

[fanefane]

Congratulations Dmitriy!

How did you get that laser line? Did you make some improvements to the laser?

[obuhus]

Greetings to all.

Today I have finished work on a table. Now my MM has the finished appearance and is completely ready to work.

[Robo]

Bravo! great machine. Molodec!

[domino11]

Well Done Dmitriy! :)

[javeria]

Good idea - !

[Surfcnc]

Hi Dmitriy

A self assembling Mechmate.

It is good thick wall tube you have used there and there is plenty off it. You have shown a nice option for people who might be replacing an ageing support board as well.

Regards
Ross

[obuhus]

Thanks, guys that my idea was pleasant to you.

Today I have finished table manufacturing. I have pasted on the top surface of aluminum tubes a strip of the foam PVC-PLASTIC. They will carry out a role of a "sacrificial" table. In process of deterioration I will level them, and when become absolutely thin - I will simply replace with the new.

[Kobus_Joubert]

Nice very nice. Don't know how strong / stiff the PVC-Plastic is.
If strong I would make ALU smaller, PVC Plastic wider to make T-SLOT for clamping.

[obuhus]

Greetings Kobus.

PVC-PLASTIC is necessary only for aluminum protection. During through processing the top layer of PVC is damaged. In process of deterioration, PVC is leveled and again worked. Then simply we paste new strips of PVC. Function T-slot is carried out by tubes, approximately as on a picture.
Later I plan to develop special fast clamps for the table. Which can be established from above, through a table.

[Fox]

Hi Dimitri, nice design for the table.
I know the sacrificial PVC layer from professional tables with their heavy metal tops with machined t-slots. I might borrow your idea if I ever get around to building my MechMate. :)

I have an idea to propose to you ( maybe you already thought about it ?)

What if you seal up all the sides of your aluminum profiles ( weld/plug ) and then drill/mill a hole pattern in the top of them ( and bigger holes in the PVC ) ; you could make vacuum sections for holding your work. Fix a compressor style valve with a handle on each tube and voila a perfect sectional vacuum system !

Further elaborating: As most people seem to use only halve or less of their tables on most jobs; you could split the tubes in the middle and create two tubes out of each. That way when you fit valves on both sides so you can chose to split the entire vacuum table in half, and then section wise. Super versatile; and more hold down power on smaller jobs ( less vacuum needed ).

[smreish]

I wish I had a picture.
I had a machine in our shop a really long time ago that I sealed up the ends with PVC sheet "plugs" that matched the tube profile on one end. The other end I did the same and attached PVC gate valves in each "plug" to make a manifold. Worked like a champ...but required A LOT of CFM to work. If I recall, a 15hp VANE pump was providing the vacuum.

[silverdog]

Ciao Dmitriy,
I am building my dust-foot and it's very similar to your, I am looking for a circular brush and I would like to know if yours is a "commercial" product or it's a personal creation. If it's a personal creation,can you share some info/photo on how you made it ? (just the circular brush) thanks
Sergio

[obuhus]

Hi Dimitri, nice design for the table.
I know the sacrificial PVC layer from professional tables with their heavy metal tops with machined t-slots. I might borrow your idea if I ever get around to building my MechMate. :)

I have an idea to propose to you ( maybe you already thought about it ?)

What if you seal up all the sides of your aluminum profiles ( weld/plug ) and then drill/mill a hole pattern in the top of them ( and bigger holes in the PVC ) ; you could make vacuum sections for holding your work. Fix a compressor style valve with a handle on each tube and voila a perfect sectional vacuum system !

Further elaborating: As most people seem to use only halve or less of their tables on most jobs; you could split the tubes in the middle and create two tubes out of each. That way when you fit valves on both sides so you can chose to split the entire vacuum table in half, and then section wise. Super versatile; and more hold down power on smaller jobs ( less vacuum needed ).
Hi Fox.
Certainly, I thought of possible use of aluminum pipes together with vacuum. My table has the size 2222х1600мм and is divided into 3 parts - 1111х1600, 714х1600 and 397х1600мм.
I plan to make an average part demountable. There it will be established rotary А-axis. I wasn't defined with a choice of a source of vacuum - blower or a vacuum pomp. Therefore the table has an incomplete appearance.

[obuhus]

Ciao Dmitriy,
I am building my dust-foot and it's very similar to your, I am looking for a circular brush and I would like to know if yours is a "commercial" product or it's a personal creation. If it's a personal creation,can you share some info/photo on how you made it ? (just the circular brush) thanks
Sergio
Hi, Sergio.
I used brush-strip with length of a bristle 60мм with an aluminum cord - such could find. It bends simply the hands, for this purpose I didn't use any adaptations.

[obuhus]

Greetings to all!

I want to share the experiments in building of mine Dust foot.

Value judgment - 95 % of a dust assembles this design with brush-strip in the width 60мм. I plan to make some more brushes with different width of a bristle. The smaller width of a bristle will allow to create stronger vacuum in a tool zone - accordingly more dust will be assembled.

Dust foot it is not finished yet completely, but already quite successfully works. Here small video in work http://www.youtube.com/watch?v=0n7ujoC9N34

[javeria]

Dmitriy - thats a beautiful design you did v carving on - care to share the vector file - please -what was the aluminum cut speed

[obuhus]

Hi, Irfan!

This not my design. It was found by my friend in the Internet, and I have created a vector file on a photo. It is an infinite structure. In the attached file a fragment of this structure. And on a picture - how to make multiple copies.

[obuhus]

Irfan, here my options of aluminum cuting

[Robert M]

Nice dust foot design DMITRIY… поздравление :D
Also, what is this cam program you’re using, seem nice & simple !
Robert ;)

[IN-WondeR]

Robert, even you should be able to see that he's using Vcarve.. :-D

[obuhus]

Hi, Robert.

I`m use CorelDraw, AutoCad, Photoshop, 3D max, V-Carve, Cut-3D... and notepad (sum time) :)

[Robert M]

Sorry…..I’m not embarrassed to say here, never used or seen a Vcarve screen….. :cool:
Simpler to ask than search from all what’s out there ! :p

[Robert M]

Tks Dmitriy ;)

[IN-WondeR]

Hey Robert. I'm also sorry. Stupid of me to pressume that you also used Vcarve to do you G-Codes...

[Robert M]

Kim, No offence was taken, we all know you’re a friendly guy :D

[obuhus]

No problems, Robert! I am always ready to answer any question :)

[javeria]

Hi Dmitriy, thankyou very much !

[bradyaero]

Dmitriy, your work is excellent, keep it up!

[hennie]

Thanks , Dmitriy for the file

[obuhus]

Greetings to all.
Who does any know, what material is used in between a table and a red detail in it video?
http://protechcnc.com.au/protec_files/clips/OUTPUT_HP-Vacuum.wmv

[danilom]

mostly everyone uses MDF as its porous and spreads vacuum evenly.

[MariusL]

Hi Dmitriy
I am building my second MechMate. The biggest pain for me was the skateboard for cutting and grinding the rails. Please give some more details of your skateboard design, it seem to work very well and I might not use so many grinders in the process.

Thanks
Marius

[obuhus]

Hi, Marius!

I at all didn't draw many things - simply held in a head. Here only details of the carriage which I cut the laser. It is necessary to consider that thorns and reciprocal apertures have the identical sizes. It is necessary to cut with a backlash! I about it have forgotten, therefore after laser are sharp to me it was necessary to adjust a detail a file.

You will find a photo and the scheme of assemblage in my post №28 and later.

There will be questions - write, I will answer, no problems :)

[MariusL]

Thanks Dmitriy,
I will have a look at the files.

[MariusL]

Dmitriy,
I think the ZIP file is corrupt as I cannot open it.

[obuhus]

ups!
New attempt.

[obuhus]

For reliability.

[MariusL]

Dmitriy
Sorry to be a pain. I think I cannot open the Acad files with my editor. Can you export them to dxf file for me. Thanks a lot for the effort man.

[obuhus]

Attempt 2

[MariusL]

Aaaah!! now I can see them. Thanks a lot man, this is a great help for me.

[MariusL]

Dmitriy
Was the text on the drawings in your own language or in English? I just see ???? were the text is. I dont know how important the text is. Maybe to help me understand the drawings. I have an idea of how to assemble the skate but I might have to ask you again in the future if it is OK with you.

[obuhus]

It is a converting error. The main thing - a steel of 6 mm.
Crosses - to engrave for the drilling and tapping M8.

[obuhus]

Dmitriy
I might have to ask you again in the future if it is OK with you.

Marius, no problem! Im always ready to answer.
Good hunting!

[MariusL]

Ok, I gathered the 6mm steel size. I think with that information I can build the skate.

[obuhus]

Ok, I gathered the 6mm steel size. I think with that information I can build the skate.

Nearly hasn't forgotten! The sizes in millimeters!

[GAZIK]

I am very glad for you Dmitry!
I shall do too such car.
Yours faithfully.:)

[obuhus]

Greetings to all. I hope, building of MM at all goes according to plan.

I managed a rotary table which I have decided to restore and use for 4th axis.

[Kobus_Joubert]

Amazing what I little bit of love and time can do. Well done.

[KenC]

Always a delight to see your work :)

[obuhus]

Continue the report

[obuhus]

Greetings to all.
Today I have connected and have adjusted a limit-switch for the A-axis.
Small video here: http://www.youtube.com/watch?v=TBN9JISs2GQ

[Gerald D]

What is the total gear ratio?

[obuhus]

Hi, Gerald! I am glad to see you here.

The gear ratio is 90:1.

Rotation can be stopped with hands. I assume, that capacities of the motor can be insufficiently. For indexer, I think, enough. In the future I will change the motor for more powerful. It is necessary to put the additional power unit for it.

Here what backlash I could reveal. Rotation +/- 60 degrees, +/- 120 degrees, +/- 180 degrees... then go to zero. Ref all home give me same result.
I am very happy. But I can be not correct to check backlash?

[obuhus]

Greetings to all.

I represent to you mi holding down rollers for sheet materials.
I have seen them in the street, and have thought: "why not? It is necessary to try!"
Result in this video http://youtu.be/236xt6LX594
Now it is not necessary to buy a vacuum pomp :) - works perfectly!
Sheet in size 1500х1700 mm hold only 2 clips.

[MariusL]

Dmitriy
I can clearly see that you guys don't just sit and drink Vodka all day long. I also cut fiberglass sheets and you just solved a big problem for me. I normally screw the sheet down in several places.

Regards
Marius.

[obuhus]

I can clearly see that you guys don't just sit and drink Vodka all day long. I also cut fiberglass sheets and you just solved a big problem for me. I normally screw the sheet down in several places.

Russian like to drink as well as in any other country :) Probably with more scope... But also to work Russian are able too. And in this case it is necessary to work less :)

[MariusL]

I like your style man!:D

[obuhus]

I am always glad to impart experience :) No problem :D Wellcom to Russia!

[Alan_c]

спасибо

[KenC]

Brilliant idea!!!

[PEU]

Excelente !

[PEU]

A year ago I posted this hold down head that also allows for vacuuming: http://www.mechmate.com/forums/showthread.php?t=2662

[MariusL]

Dmitriy
I see that you also cut fiberglass. We have a CNC club over here and we had our last meeting for the year last night. I spoke to a guy there about your invention and he mentioned that you get a special tool for cutting fiberglass. This tool has straight flutes so it will not lift the job at all. You might try that as well to further improve the quality of your cut.

Regards
Marius

[hennie]

Marius is this an exclusive club.:)

[MariusL]

No Hennie, not at all. There are some old hands and some new ones. It is all about getting new guys to understand CNC and to share experience. The main focus is on EMC2 though. I am about to switch to EMC myself. Lots of advantages I am told.

I am waiting for a link to the group and I will pass it on to you.

[KenC]

Marius, what took you so long to switch to EMC2???

[MariusL]

Ken,
I have a problem with self when it comes to building things. Once I have created something I never go back to it because I loose interest in that item. It must just work.
So now I am building a new machine and hence the new interest. Also, I must say in shame, I like the blinking lights of Mach. But no more, I am cured of the lights.

[MariusL]

Dmitriy,
What size bearings did you use on the skate please?
And how did you arrange your tail stock for the rotary table?