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  #1  
Old Wed 09 December 2009, 05:13
drinksalot
Just call me: Gerry
 
Wexford
Ireland
Mechmate build - Wexford Ireland.

Hello All
I have been reading this forum for a couple of months now and I want to say thanks to Gerald and all who post on this forum for the wealth of information you have made available.
I started the build 2 weeks ago and I am now waiting on the laser cut parts from cncbasher and the v bearing kit from superior bearings. I will get organised with the electrical side of things as I progress with the Y carriage.
Heres a few photos of the build so far. I thought that I would use my dewalt saw with a 12 inch cutting disk to do the steel cutting and all went well untill the second last cut on the 7 inch channel iron. Bye bye motor!!!! I know it wasn't built for cutting steel but I was all smiles until I burnt out the feed coil and the armature. A little over 100 euro later and its cutting "Wood" again.
Regards
Gerry
Attached Images
File Type: jpg dewalt grinder.JPG (125.8 KB, 673 views)
File Type: jpg crossmembers.JPG (93.0 KB, 670 views)
File Type: jpg grinding jig.JPG (89.9 KB, 669 views)
File Type: jpg mechmate rhs.JPG (118.8 KB, 667 views)
File Type: jpg nice doggy Sit.JPG (102.2 KB, 674 views)
File Type: jpg mechmate Lhs 1.JPG (101.3 KB, 671 views)
File Type: jpg mechmate angled.JPG (123.1 KB, 669 views)
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  #2  
Old Wed 09 December 2009, 15:34
Greeny
Just call me: Greeny
 
The North
United Kingdom
That's a great looking base you got there Gerry.
Great start.
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  #3  
Old Wed 09 December 2009, 17:18
drinksalot
Just call me: Gerry
 
Wexford
Ireland
Thanks Greeny. I have the laser cut parts, the gecko g302v and the v bearings arriving next week. Time to clean the shed so I can make another mess.
Regards
Gerry
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  #4  
Old Wed 09 December 2009, 23:17
KenC
Just call me: Ken
 
Klang
Malaysia
Interesting way to mount your cross channel with a SHS underneath. Is that 50 x 50 SHS? Did you build the table bottoms-up?
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  #5  
Old Thu 10 December 2009, 02:41
drinksalot
Just call me: Gerry
 
Wexford
Ireland
Hello Ken. I am not sure what shs is but the cross channel is 75mm x 38mm welded to the 7inch x 4inch heavy channel I propped and clamped the steel and welded from the top. "Right side up". I hoisted it all in the air so I could weld the bottoms of the cross members and paint.
My main channel is 1/2 inch thick and very heavy. I was worried whether the roof would buckle while it was being hoisted but it was ok.
Regards
Gerry
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  #6  
Old Thu 10 December 2009, 02:48
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
Gerry

Welcome and good luck with build. You are making nice progress.
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  #7  
Old Thu 10 December 2009, 03:07
KenC
Just call me: Ken
 
Klang
Malaysia
Gerry
Thanks for elaborating.

I meant Square Hollow Section = SHS.

Did you see much twisting when you hoist the table?
Did you tried hoisting one corner of the table & the leg nearest to this corner lifted before the other legs lift?

Great progress! Look your very well organised workshop.
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  #8  
Old Thu 10 December 2009, 12:19
drinksalot
Just call me: Gerry
 
Wexford
Ireland
Hello Ken. I hadn't tried it but you got me curious and as the hoist was in position I moved it to above one corner and started to lift. It was about 40 mm off the ground before the oposite side decided to lift. I could nearly use this blue lump (mechmate) as a tuning fork. If you hit it it can hold a tune for a few seconds.
Regards
Gerry
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  #9  
Old Wed 16 December 2009, 17:38
drinksalot
Just call me: Gerry
 
Wexford
Ireland
I am using qty 4..Gecko 203v with qty 1..PMDX-122 and 4qty 34hs9801 motors. Can some one tell me what power supply to order and maybe where to buy it from. Euro zone. Thanks
Gerry

Last edited by drinksalot; Wed 16 December 2009 at 17:41..
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  #10  
Old Wed 16 December 2009, 22:19
domino11
Just call me: Heath
 
Cornwall, Ontario
Canada
Welcome Gerry. Looking good so far!
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  #11  
Old Thu 17 December 2009, 00:10
isladelobos
Just call me: Ros
 
Canary Islands
Spain
Send a message via MSN to isladelobos Send a message via Yahoo to isladelobos
I have this info.

MotionKing 34HS9801 (490 Oz-in / 3.5N.m)--> price: $55.00/PC --> 3.0Kg

4.1mH half-coil/parallel/unipolar
50 to 65VDC --> 65VDC Max
4 Amps
WATTS = 65 Volts X 4 Amps = 260

If you purchase only the toroidal transformer, you need match to AC:
60VDC / 1.4 = 42.8VAC
WATTS = 60 volts x 16 Amps = 960
Capacitor = 4A x 80,000/42.8 = 7.476 uF --> 42.8 + 20% = 51.36 Volts

bipolar series
Dont match with the Gecko
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  #12  
Old Thu 17 December 2009, 07:52
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Gerry, from the first post in this thread: Calculate the Voltage and VA size of the DC power supply for stepper motors/geckos, you will see that you need a 65V DC power supply capable of supplying 11 Amps max. (Ros forgot the 67% factor). A 60V DC supply may be easier to get and will still be quite okay.

I havn't seen anyone in Europe get these easily off-the-shelf, but I do see that MCP is starting to offer power supplies http://www.motioncontrolproducts.com...plies_v2.0.pdf
A pair of PS705 supplies could do the job. Suggest you give them a call and see if they have a bigger model yet.

Otherwise, it really isn't difficult to build your own supply: Homebuilt power supplies for GeckoDrives
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  #13  
Old Thu 17 December 2009, 10:54
wintersgillg
Just call me: Graham
 
Glasgow
United Kingdom
Toroid Transformers

Gerry

RS Online have transformers and probably all the other bits:

http://uk.rs-online.com/web/search/s...duct&R=3616349

and this company has transformers:

http://www.canterburywindings.co.uk/standard_range.html


Graham
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  #14  
Old Thu 17 December 2009, 16:46
drinksalot
Just call me: Gerry
 
Wexford
Ireland
Thanks Gerald and Graham. I am sorting through all the info at the moment. I hope to have the power supply sorted in the next few days. Then its time for the kitchen project. I received my laser cut parts today from cncbasher and I have to say the quality is stunning. I will post more photos very soon.
Regards
Gerry
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  #15  
Old Thu 17 December 2009, 21:20
KenC
Just call me: Ken
 
Klang
Malaysia
Hi,
I can have EI core transformer custom woound here. wonder if anyone is interested.

Cheers

Ken
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  #16  
Old Sat 19 December 2009, 04:33
drinksalot
Just call me: Gerry
 
Wexford
Ireland
Hello all.
I am just about to order based on the above advise for my setup a 65vdc 15 amp unregulated keling power supply. Are there any problems with this choice. Thanks Gerry

http://www.kelinginc.net/KL_6515.pdf
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  #17  
Old Sat 19 December 2009, 05:52
KenC
Just call me: Ken
 
Klang
Malaysia
Hi Gerry,
You should go through Gerald's previous post religiously.
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  #18  
Old Sat 19 December 2009, 06:08
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Gerry, that should be fine.
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  #19  
Old Sat 19 December 2009, 07:39
drinksalot
Just call me: Gerry
 
Wexford
Ireland
Thanks Gerald. The plastic in my wallet is certainly getting excercised this month.
Gerry
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