MechMate CNC Router Forum

Go Back   MechMate CNC Router Forum > Personal Build Histories > Construction started, but not cutting yet
Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Reply
 
Thread Tools
  #1  
Old Tue 15 January 2013, 21:38
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
Happy Rail Grinding - Mesa AZ

Hi everyone, starting to put my parts together, so far have ordered these items:
BLPK - Basic Laser Cut Parts Kit (Includes Feet)
MP01 - Idler and Bushings
DP01 - Motor Plates for Belt Drive(Set of 4)
SB4 - Stop Blocks
BC01 - Basic Control Box Kit
BPA02 - (This is the 4:1 setup) 4 Sets Pulley/Belt/Axle
Idler Bearing
WR04 - 4 core wire - 164 feet
WR08 - 8 core wire - 82 feet

Steel for table coming next week
Need to order rack, pinions, rack tape, V bearings and hardware, prox switches etc. I am going to give one of the Chinese 3.3K air cooled spindles a try with a Hitachi VFD.

I also dug out some parts I had on hand 4 motors, kelinginc KL34H280-45-8A
and a power supply that I regret but am willing to try it's a switching 600W 48V 12.5A Variable, I do have a few new Mallory 22K uf caps,I'm not sure it would be worth the time trying to use this or just count my losses and buy an unregulated power supply. I will be using gecko 203V's and a pmdx 126.

Anyone have any opinions about my power supply set up?

Thanks for your time.

JD
Reply With Quote
  #2  
Old Wed 16 January 2013, 06:57
MetalHead
Just call me: Mike
 
Columbiana AL
United States of America
You do not need caps for the 203V. The PS should be fine (I think) and I recommend getting the PMDX-133 boards with cables (18 inch) to hook the 203V's to the 126 board.
Reply With Quote
  #3  
Old Wed 16 January 2013, 12:02
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
You might be okay without Caps, but highly recommended. The 20K Mf capacitance even's out the ripple for the drivers. Power supplies from places like Antek or otherwise include them.
Reply With Quote
  #4  
Old Wed 16 January 2013, 12:28
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
Thanks Mike and Sean, I'm gonna schematic the whole thing out and figure my calculations.
Reply With Quote
  #5  
Old Thu 17 January 2013, 21:30
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
Found a 70lb box sitting by my garage when I got home...Thanks Metalhead!
Parts look awesome.
Reply With Quote
  #6  
Old Fri 18 January 2013, 07:54
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
Link to power supply supplier in the US

http://www.antekinc.com/gview.php?d[]=1
Reply With Quote
  #7  
Old Fri 18 January 2013, 10:19
darren salyer
Just call me: Darren #101
 
Wentzville mo
United States of America
Its always a great feeling when those boxes start showing up.....
good luck with your build.
Reply With Quote
  #8  
Old Wed 23 January 2013, 21:52
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
Thanks Sean and Darren, for the info and support, yes it's getting exciting! Gonna be doing a build log here shortly. Ok so, I'm gonna change out the power supply to a non-regulated. So, doing some motor calculations, I have the KL34H280-45-4A motors (not the 8 wire) which require 86V at 4.5A however a couple concerns. The inductance is 6.8mh and my gecko 203v's are 80V max. I'm gonna use Metalheads 3:3:1 reduction kits, the torque will be incredible (2100+oz/in) but I wonder about speed and temps of my the motors if I deregulate them at say 75V? I have read a post by Mike Richards of jog speeds of 13 plus inch/sec which is plenty. Most of my cutting is HDPE, my biggest concern is cutting resolution (clean cuts) would I be better off taking a loss on these motors and buying some better ones?

Last edited by jd.roberts; Wed 23 January 2013 at 21:56..
Reply With Quote
  #9  
Old Wed 23 January 2013, 23:39
MetalHead
Just call me: Mike
 
Columbiana AL
United States of America
I think it is worth derating the motors for now since they are already bought. But buy a PS that is in line with where you would end up. Like a 63 volt unit that will also be a good fit for the KL34H280-55-4A motors.

Only problem at the moment is that I tried to order parts from Antek and they are OOC until April with no stock for some reason. I had to buy a PS from Keling at a steep difference in price and my concern is that they will then call Antek to fill my order and I will be in the same place again !!!
Reply With Quote
  #10  
Old Fri 25 January 2013, 23:01
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
Geez, is there anyone else that supplies parts, Motors or power supplies? Metalhead I'll be contacting you for a couple other parts if you haven't shipped my other stuff yet.
Reply With Quote
  #11  
Old Sat 26 January 2013, 08:32
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
Motors and Drives
- Oriental
- Keling

Are the most familiar in the USA and have a good track record.

Computer breakout boards
- Gecko Drives if your using the 540 with drives
- PMDX
- CNC4PC
Reply With Quote
  #12  
Old Mon 04 February 2013, 21:31
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
Ok, so it seems that Antek is going to be out for awhile, after talking to Metalhead, and reading online that their warehouse and offices burned down they are not able to provide power supplies. Has anyone found another resource for transformers?
Reply With Quote
  #13  
Old Mon 04 February 2013, 22:05
domino11
Just call me: Heath
 
Cornwall, Ontario
Canada
Parts express should have just about all the parts you need for a simple unregulated power supply.

http://www.parts-express.com/

Avel Toroidal Transformers

Bridge Rectifier

Check out Digikey for capacitors
Digikey Capacitors
Reply With Quote
  #14  
Old Tue 05 February 2013, 10:45
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
...love parts-express just saying.
Reply With Quote
  #15  
Old Tue 05 February 2013, 12:42
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
Yeah, they look like they have a great selection, just need to find one that will work for me.
Reply With Quote
  #16  
Old Tue 05 February 2013, 16:27
Zouave
Just call me: Eric #115
 
Sacramento, CA
United States of America
Not sure if you picked a power supply yet, but it looks like Antek is working on getting some supplies in stock by the 15th. Have you worked out your power supply requirements yet?
Reply With Quote
  #17  
Old Tue 05 February 2013, 18:25
KenC
Just call me: Ken
 
Klang
Malaysia
If you are gonna to wire up your control panel, you ought to be able to figure out how to put a transformer PSU together.
Reply With Quote
  #18  
Old Tue 05 February 2013, 19:53
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
That's great news. If I'm doing the math right the KL34H280-55-4A is a 4 wire, 5.5A, 4.1mh it will require a 63V, 1000VA transformer, Antek makes one of these that fits the bill. Ken you're right, I can build this PS if I can get the right parts in my hand. I've been reading the forum every night now for 3 weeks, but I know there is so much more to learn.
Reply With Quote
  #19  
Old Tue 05 February 2013, 19:57
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
This is the transformer I'm looking at. http://www.antekinc.com/details.php?p=144
Reply With Quote
  #20  
Old Tue 05 February 2013, 20:06
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
I probably couldn't build this for this cheap considering the transformer alone is $100.00 http://www.antekinc.com/details.php?p=309
Reply With Quote
  #21  
Old Tue 05 February 2013, 20:24
KenC
Just call me: Ken
 
Klang
Malaysia
1000VA is good for building an arc welding machine. 300~400VA is sufficient. There are just too many threads explains... I'm not bored enough to repeat the explaination.
Reply With Quote
  #22  
Old Tue 05 February 2013, 21:53
MetalHead
Just call me: Mike
 
Columbiana AL
United States of America
Your not going to get any ps out if antek or keling at this point because of s fire at antek. I am doing the math and agree with Ken that a 5 or 600 VA is fine and I rhink we should derate these motors to 50 volts. Reason being is the cost to build a 63v ps is high in my opinion whrn 50v is a lot cheaper.
Reply With Quote
  #23  
Old Tue 05 February 2013, 23:51
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
Thanks for the responses guys, Like I said so much more to learn. I didn't do enough research on the topic and went off of numbers given to me in emails from other members to arrive at such a high VA. I read up more on Gecko's website and here on the forum. Speaking of which, Ken, I appreciate your response looks like we've all been here before huh? http://mechmate.com/forums/showthread.php?t=1950
Mike, after more reading, I think that your numbers will work nicely.

Thanks,
JD
Reply With Quote
  #24  
Old Fri 08 February 2013, 12:15
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
Got another 100lb box yesterday, Thanks Mike!
Reply With Quote
  #25  
Old Fri 08 February 2013, 12:18
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
Also have a possible transformer 50V, 600VA, 6a output-wire parallel and get 300VA and 12a does that sound right, only found a couple posts showing parallel application on transformers.

Thanks for any help with this.

JD
Reply With Quote
  #26  
Old Fri 08 February 2013, 13:03
domino11
Just call me: Heath
 
Cornwall, Ontario
Canada
JD,
Your VA does not change on how you wire the transformer. If you have two 6A 50V secondaries and you wire them in parallel you would have a 50V 12A secondary. If you wire them in series, you would have a 100V 6A secondary. It still all works out to 600VA. This would give you a 70.7VDC supply when rectified and filtered when the two secondaries are wired in parallel.
Reply With Quote
  #27  
Old Fri 08 February 2013, 13:54
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
Thanks Heath appreciate it.
Reply With Quote
  #28  
Old Sat 09 February 2013, 20:53
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
Degreased and Started welding the monocoque Y-Car, UPS man wasn't nice, little bend in the main piece, hope he didn't hurt his foot to bad when he kicked the box. I'm also laying out my control box.

Last edited by jd.roberts; Sat 09 February 2013 at 20:53.. Reason: miss spelling
Reply With Quote
  #29  
Old Sat 09 February 2013, 22:28
MetalHead
Just call me: Mike
 
Columbiana AL
United States of America
I am going to work on sourcing the parts for the Power Supply. I have a line on available transformers.
I just have not had time to read back and see if I need a 50v/50v or a 25v/25v transformer.
Reply With Quote
  #30  
Old Mon 11 February 2013, 08:18
jd.roberts
Just call me: JD
 
Mesa, AZ
United States of America
Sounds good Mike, My goal is to be making dust by the end of March. By the way the laser parts are awesome, they almost snap together. I am, going to be making stand offs today for my components in the control box. Also thanks for the new thread name that's what it feels like, tons of parts, some assembly required.
Reply With Quote
Reply

Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
rail grinding. alexhhisc Rails & Rollers 1 Wed 18 December 2013 20:57
Rail Grinding Jig for a Radial Arm Saw Mr Ron Rails & Rollers 4 Wed 27 June 2012 10:43
Tips for Rail Grinding Radishworks Rails & Rollers 10 Wed 03 March 2010 12:42
Rail grinding GaryS 10. Base Table 3 Mon 22 February 2010 23:24


All times are GMT -6. The time now is 16:18.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.