Lagun 3-Axis Retrofit

[bfloresf1]

Hello...

The machine is home is a easy job after all remove the head like you did the first time, put blocks on the table, removed the 4 bolts pulled it away from the quill and lowered the table all the way and it cleared the door with no problems.

Now its time for me to clean this all up and fix some cables... i also need to do some research on a phase converter and run the 210 VAC over to it... Any suggestion on converters?

Here is the picture in my garage...

Ben

[millnturn]

Nice work getting it home! It is quite the sense of accomplishment when you succeed at moving something that massive and heavy into your own garage, usually with one helper and some pry-bars and pipes.

As far as phase converters, I only have experience with the rotary type. I built my own with an old 5hp motor, some caps, and a simple starter circuit. It works very well, and has not give me any problems. I used the plans that are available here: RPC I use it to power my manual Bridgeport and my 2.5hp vacuum pump that I use for my vacuum table on the Lagun CNC.

When I retrofitted my Lagun, I went with a VFD for the spindle drive, and would absolutely do it again! I bought a 3hp unit from automation direct for around $280, and it accepts single phase input. It is really cool to be able to basically set the speed on the vari-head and forget it, and do all of the speed adjustments through the software. I program the speeds for each tool I use in a part program, then the controller does the rest. It is a pretty cool feature to have, but you could always add it later.

For now, it looks like you will have your hands full (and dirty) with the cleaning! I have been there before. Something that I have found works very well for cutting the coolant crud is Greased Lightning. It is a water based alkaline degreaser, and seems to attack the sludge pretty well. Do avoid soaking any of the ways, or areas where it could get into bearing surfaces, as it is water based. Pretty fun to see how good you can get an old machine. Also, it is much easier to keep a machine clean, if you start with it clean. Also makes it much more pleasant to crawl around and work on it if you aren't getting filthy and full of metal slivers.

Post some pics of the progress.

Jon

[rac74]

Do the HDV series have "boxed" ways or the standard dovetail like the FTV series?

[erikjgreen]

I hate to try and resurrect an old thread, but I want to request details of the final setup you ended up with on your Lagun.

I have bought a Lagun 250 CNC with essentially the same config as yours, and I'm going to retrofit it for control with Linux emc.

I'd like to re-use as many parts of the original electronics as I can to keep costs down... can you post some details of the config you ended up with, including which parts you re-used, why you didn't use others, how you ended up hooking up the glass scales, and the VFD?

I'm trying to pick a VFD for my spindle, but mine is a 5 hp/3 phase, so I've only found one model that can deliver that if supplied with single phase 220. How big is your spindle motor?

Did you re-use the original limit switches?

Any comments on what you did end up using, problems in hindsight, that sort of thing?


Thanks much,
Erik

[millnturn]

Earlier this summer, I came across a great on a HAAS TM1, and sold the Lagun to help finance the purchase. Honestly, after the learning curve of a new controller, I have not looked back once! I am now spoiled with a 10 tool changer, 400 IPM, 6000 RPM, and 7.5 HP.

I do however, have some great memories of the Lagun, and the fact that I cut my CNC teeth on that machine.

Re. your questions, Erik;
-I stripped and painted to start.
-All motors were re-used (spindle and servo).
-Glass scales were Anilam, with an A-B quadrature output ( A+, B+, 5V+, GND), which fed directly into the Viper servo drives (5V from Viper).
-Bijur lubricator was cleaned, and function verified.
-Spindle motor was 3HP, and run off an Automation Direct VFD, supplied by 240V, 1 PH.
-Limit switches were all replaced, but with identical ones, so I did not have to re-invent the mounting and actuation.

As far as how I integrated it all, thats a much more involved reply. If you read through all my posts on this thread, you will get a good idea of the components used in the project. Connections are going to be different in every build, and the suppliers of the components are usually pretty good about helping you work through the details.

Good luck, and post your progress!
Jon