Sharma,

It's also feed rates and spindle (router) speed. Your tooling (cutting bit) may be correct, but your feed rate needs to be slowed down.

Sharma,

You are very welcome to come visit me in Cleveland, Ohio, USA in January. I'll teach you EVERYTHING you ever wanted to know about snowflakes. :p:D

Marc,
Come on, Ohio? Canada is far better for snow! :):eek:

India does well enough on their own snow; link

Marc

Thanks for invitation, MM also produces lotta snow ;) http://www.mechmate.com/forums/showt...&postcount=379 I invite you to view sand dunes of Rajasthan http://www.rajasthantravelguide.com/...jaisalmer.html

Gerald - Been there a few years back and also in Nepal, you must visit 'Pokhra' some day to feel tranquility of nature. http://www.oktatabyebye.com/Picture-...vel-photo.html


Buzy changes in control box.

Impressive architecture!
The site states that the sand dunes are 5.1 sq km. Only such a small area?:confused:

Sharmaji - show us your control box -

Lex,

This particular area is called 'SAM' and this area is covered with pure shifting send dunes in the desert. This is only a part of vast sand sea. Since it is approachable from Jaisalmer a large number of foreign tourists visit Jaisalmer every year and in Christmas holidays this area is totally covered with humans. People come to see picturesque Sun set. You can't even find place to stay if no advance booking.
I'll be able to show some pics, can't find right now in which DVD I stored them:confused:

Changes in control box
 

Here are some changes in my control box. And this new setup is working fine. All cables are detachable and have good quality contacts. Signal and power cables are separate and opposite side of CB.
I was thinking from beginning that how to save pc from dust, here is how I've done this and this also safe from noise etc. The pics are self explanatory.
I am using C11G from cnc4pc and this is working great. I am using one of NC of Estop (no AC line on button boxes) to drive BOB enable switch. Other Estop NC goes to BOB input.
Sequence of Estop condition - When Estop is pressed BOB is disabled, through EN swich/charge pump, outputs are disabled and on board configured mechanical relay cuts contactor coil, which in turn cuts power supply to steppers and router ssr. Since BOB receives power through pc ps it stays on but disabled.
When Estop is depressed BOB enables relay but contactor coil being in series with on/off push button disabled till on button is pressed again.
I am also using low rating fuses for each drive as this is expensive here to replace Gecko fuses.
8 core wire used for inputs, using four pairs for each button, saving some wire and space on chain.
On board other SSR has not been used (only 8A AC output) instead output pin used to drive outer SSR and configured for F5 , M3/M4 and M5 codes. I can now control my router through gcodes also.
I replaced my old pc (1.9) with Quantum Core and old pc becomes dedicated pc for MM. Only MB, RAM & HDD utilised (saved some bucks).
I am using new PC for processing nc files and then input it via usb port which is same as professional machines.
Old USB gamepad used in place of pendent. Which is working great and also agronomic. This is very easy to configure.
Right now I am scripting Z zero routine for touch plate for OEM button (blue), if any of you guys is doing this then this will be easier for me.(I have gone through all cnczone and mach forum posts;) so help is desired from who has done this on his MM )
Thanks. Critics are welcome.:D
(The filter is of bike air cleaner, I am replacing it with car air filter for more air)
Disclaimer - This is done after thoroughly reading, consulting and working fine for me. If you are following this do it at your risk.

Thats a nice sweet little control box sharmaji - really very nice setup.

where is the monitor - keyboard placement - did you do something like what JR did?

RGDS
IRfan

Processor I mentioned above is Quad core and not Quantum core lol.
Wiring need some tidying up, thinking of cutting some wooden cleats for that, as I could not find sticky pad ties here.
I have also wired CB fan on other side of contactor so that when power is on and even after Estop it stays on to cool pc. pc box has slits for getting cool air from filter directly.

Irfan bhai,
I have plan for that and withing a few days that will be done.
Thanks.

so did u advertise - what was the initial response from the locals? what are your contactor specs and what price did you pay for it.

RGDS
Irfan

I already got order from local for board cutting. Being small city People are amazed and could not believe what a cnc can do. All credit goes to Gerald for this fabulous machine. I need not advertise, as I am already buzy. Now I need dust cleaner or have to get out with MM.:), and Indexer is also in mind ( CB is already set up for that)
Contactor is TEC brand and I think it is around 700 INR, I have to look at my diary for confirmation. It has 4 contatcs, 40A, 600V. The best is ABB brand but double the price.This is also good brand.

Thank you Sharmaji! we dont yet have you on the mugshots - kindly add urself! also PM me how much you are charging for board cutting.

Sharmaji - I particularly like the way you have set up the E stop - using the c11g board. how did you set up the extra motor on the long axes?

I am planning to use a contactor which operates on a 24dc coil so that estop is activated directly - still have to check on that one.

RGDS
Irfan

Mr. Irfan,
That contactor was INR440.
I could not get that? wanna know mach setting?

the long axis has 2 stepper's right - how did ya config them in mach?

do post ur mach settings.

RGDS
Irfan

Irfan, look for "Slave Axis" settings in Mach under Config. You "slave" the second x-motor to the first x-motor.

Thanks Gerald for reply, I think I should remind one more thing to Irfan.
Irfan
Check A axis for X axis and restart mach. And don't forget to reverse the motor winding connections to drive term 3 and 4. Otherwise gantry will derail.

You have to provide extra 24 V supply for that, while I am using 12 v for proxy and 5 v for bob from ps of pc, which cuts extra cost. On board mechanical relay can be used for driving AC contactor. Any particular reason for that?

Yes - I am going to have a separate 24v supply - my thinking is that limits / estop - estop light - and if a buzzer is used need to be operated on a supply - so the 24V - Though none have faced a problem due to residual power I dont want to take chance - in your case the BOB is still powered by the computer and it is covered , in mine it is not. During a power outage - I plan to use a UPS on the PC and BOB which will then act on the estop and activate a blinker powered by the same UPS. the UPS is just 10min backup and since I am planning on LED blinker and Atom motherboard processor combo the backup will extend to around15 min.

I will set up the Estop in such a way that any power outage will trigger a estop -, I will also have a delay switch on the mains - before power enters the mains - it will go thru a Omron delay switch - this helps when in our areas there is huge variation in power and where we have external shorts where power gets on / off many times in a few second.

More over one important thing I am planning is to have a Voltmeter placed near your meter box - I have seen in my other machine with servos that any voltage drop will need changes in mach velocity settings. So better safe than sorry.

I hope this is not boring - so much rant so that if I am wrong somewhere you folks can corrrect me - sorry sharma - this is sort of hijacking your thread.

RGDS
Irfan

I know that most of it is probably a overkill.

Irfan, I copied your last post to this thread for further discussion:
http://www.mechmate.com/forums/showthread.php?t=60

If you see my outside connectors it has smps output, which has been taken out from smps and put on cb, it is connected from outside ups, there is no connector near smps fan. So my pc is also connected to ups. Since ups is big it can't be fitted in box :)

Nice going Irfan :)

As Irfan indicated that power goes frequently, although here is timebound power cuts, as a safety feature I added AC relay to input of contactor to control C11G EN switch. This now controls Estop when power is out and disables BOB as well.

I mention above wrong, DPDT AC relay controls Estop and 12 V spply to Estops from pc. i.e. long time ups power available. I tested it and it is working fine when power cuts.
I remember to read somewhere that power of bob should not be cut suddenly when pc is on. I donno for what reason.

HI Sharma, what's happening with your machine? any updates - I was expecting to see more work.

RGDS
IRfan

Nice machine, Sharma...

Looks like the world is slowly being painted blue...:)