Search:

Hi Gerry,

Thanks for that. I've looked at BST but haven't had a chance to purchase yet.

Cheers,

Peter

Hi Russel,

Thanks for that. It explains it perfectly.

Cheers,

Peter

I believe that they do. I'm not up on how it is done though.
3 Double Ball Nuts Double Ballnuts Ball SCREWS1605 2005 C7 for CNC Router | eBay

I could do it the way you suggest. That way it...

Hi Russel,

Thanks, one of my options is to get some double ball nuts from linearmotionbearings2008.
Hopefully I can use the nut on my existing screws.

Paul suggested that I check that I've...

Thanks for all the replies.

I'll pull it apart on the weekend.

Cheers,

Peter

Hi All,

My TM20VL mill conversion uses FK12 bearing blocks to retain the RM1605 ballscrews. I measured the backlash in the X axis and it is around 0.12mm. :oo:

I'm sure it should only be about...

Hi Brad,

60degC is fairly standard for stepper motors. At that temp you can only touch it for a few seconds. I normally try to run them a little cooler though.
That motor will run hot with a...

Hi Guys,

A bit of a strange topic for a CNC thread, but the payment could be in CNC components. :)

I'm after some professional help with my website Joomla installation. I figured that I'd make...

Good to hear it is up nd running. :)
Cheers,

Peter

Looking good! looking forward to seeing it fire up.

Cheers,

Peter

Hi,

If I read you correct, you want to have the G540 VFD voltage output operate a relay?

I haven't done it but it should be possible with a relay such as this.
...

Hi Peter,

I purchased an Intel NUC around Christmas time. Looks similar but different model number. Is a DN2820FYKH
http://www.intel.com.au/content/www/au/en/nuc/nuc-board-dn2820fykh.html

I've...

Hi Guys,

I was so impressed with the quality of the Belt Drive kit for the TM20VL mill that I fitted to my mill that I decided to stock a few.

323161

The kit is produced by Scott at Benchtop...

Hey Willy,

Sorry to hear about your challenges. A few years ago I was an executor on my Mothers Will and it was not fun, so without a will I feel for you.

As to the mill, I agree don't give it...

Hi,

At the moment Scott who makes the belt kits agreed to make one so I'll see what he can do.

Thanks very much for the offer though.

Cheers,

Peter

Hi Guys,

I had a bit of time on Saturday to start the spindle belt-drive conversion. I'm using using the kit from Scott at Bench Top Precision

The kits are beautifully made. They are almost...

Hi Rod,

Yes, I will be reducing the rapids as running it this fast will only wear thing out. I was just seeing what speeds I could wring out of it.

I tightened the jibs up so there was no...

Hi Bob,

You can use a larger motor but it won't be producing it's full torque. If I get time, I might measure the torque it develops at 3.5A.

Thanks for the tip on the pedestal drill. I had not...

Hi All,

I finally got around to wiring up the motors on the mill.

I'm using my 570 oz.in 5A stepper motors on the mill. The pulleys are set up for a 1:1 ratio.

I have a G540 based controller...

Well, the Z-Axis brackets are finally done. That's the last of the axis conversions.

The drive is a 1:1 belt drive. I chose the pulleys and belt from what I had on hand to match the stepper...

Hi,

Have a look at this manual. It should answer all your questions.
http://www.machsupport.com/wp-content/uploads/2013/02/Mach3Turn_1.84.pdf

Cheers,

Peter

Hi,

One tip to keep in mind with these type of connectors is to not to put any strain on them through the wiring. Tight bends my reduce the conctact between the pins and connector.

Cheers,
...

Hi MPW,

Yeah, probably. I don't know great deal about the Shark controller. If you want, send me a PM and I'll see what can be done. It is possible that you could use a G540 along with most of...

Hi,

This images shows the difficulty I'm going to have attaching the top plate. The original top plave was just a thin sheet steel cover. The mounting holes were just hand drilled.
I'm thinking...

Well it's been quite a while since I last worked on the conversion. I must be 10 to 12 months. Every time I walk past it in the shed I feel a small guilt twinge.

I haven't really done much, but...

Hi,

Also, if you purchase off ebay, many of these routers have a controller based around the dreaded Toshiba chips. They work OK when they work, but are very fragile.

You may want to consider...

Hi Marty,

It's going a bit slow at the moment. There just doesn't seem enough time at the moment. I'm tring to get the Z-Axis done at the moment.

Cheers,

Peter

Hi Marty,

Wiring looks correct. The A and /A, B and /B are used to differentiate the two coils labelled A and B. For each coil the A and /A, B and /B differentiate the two wires within each coil....

Hi Guys,

Thanks for all your support.

I noticed that they stock the new G215 for same day dispatch. I have received one for evaluation but as I understand it, they have not been released for...

Hi Guys,

I just got an email asking for someone to help out with some machining.

"


If anyone is interested and can help out let me know and I'll pass on the details.

Cheers,

Hi all,

I get a lot of enquiries as to whether I stock cable suitable for VFD drives. I do now. :)

The cable contains four cores and has a tinned copper braided screen and a PVC transparent ...

Just a couple of tips on the wiring.

In the first 2 photos, you have heavy duty wires in terminals 1,2 and 3 of the G540. The power for the g540 connects to terminal pins 11 and 12.

I've has...

Hi Rod,

Thanks for the ideas. Where the nut holder attached to the Z-Slide, there is already a slot that will take care of the misalignment in one direction, so I could put use 1 plate with slots...

My plan for the top plate is to make a replacement plate for the side plate. This will be made from of 12mm aluminium plate.

I'll then make the top to sit on the top of the column. It will bolt...

I still have a bit of work to do with respect to making the Z-axis top plate that holds the Z-axis bearing supporting the screw. It's going to be tricky as there are no real reference points.
...

These two images show the Z-axis ballscrew and nut holder inserted into the column.

I'm really pleased with how it turned out as it is so quick to assemble the axis.

These images show the nut holder mounted to the Z-nut on the ballscrew.
The last of the images shows the ballscrew clearance through 25mm hole in the nut holder.

The hole was drilled with a...

The first image shows both part A and Part B of the Ballnut holder. I was very happy with the fit of the peg into the pocket. It ended up being a firm press.

The next two images show the two...

As depicted in the images below part A of the Z-axis ballnut contains a pocket for part B to lock into. The two parts are held together with a pair of M6 bolts.

Part A is attached to the ballnut...

The two parts need to lock together so I decided to make a square peg that locks into a matching square pocket.

The first job was to make the square peg. The part is made out of 50mm x 25mm...

Over the weekend I had a bit of time to work on the Z-Axis ballnut holder. Most of the weekend was taken up with my sons basketball tournament. 5 games in 2 days!. I was sort of happy that the team...

Hi Russell,

Yes, that's why I suggested a relay with double the current capacity, for a 10A system, a 20A or 30A rated relay.

I've been using a 20A relay on my G540 controller for about 4 years...

Hi Russell,

I have to respectfully disagree. When a solid state relay fails, it mostly fails in the "ON" state, which is the last thing you want for an ESTOP. This is the reason that safety...

What mains components you shut off with the relay is up to you. Think of the reasons that you need to push the Estop.

If the VFD fails and suddenly starts the spindle by itself the only way to...

The circuit below is a sample EStop I snatched of the net.

The DC (power supply) is 12Vdc. Control relay (CR) is a 12V relay such as the link below, but you could use any small 12V relay as the...

Hi Geoff,

On my G540 controller I have the controller box on/off power switch turn on a small 12V switch mode power supply. This 12V supplies an Estop circuit that consists of the EStop button, a...

Hi Grant,

If you think that's nice you should see it now. I just need to pick it up after the camping trip.



Cheers,

Peter

Hi All,

Homann Designs will be closing for the 2012 Christmas break from the 21st
December until the 14th January for the annual camping holiday in Port Fairy
(hopefully it won't be too hot this...

Hi,

You may find that the spindle is still OK assuming you turned it off as soon as you saw the smoke.

Try putting the settings back to where they should be and see if it is OK.

Cheers,
...

Yes I agree. We want pictures. :~

Cheers,

Peter