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Another Lathe Dro Install

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RJSakowski

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I just finished the installation of a set of iGaging DigiMag DRO's on my G0602 lathe. I chose the iGaging because of their ability to fit the lathe without loss of machining capability and being able to install them with serious modification of the OEM lathe. They also work with Yuriy's TouchDRO ap for Android devices.

I used a 6" scale for the tailstock, a 12" scale for the cross slide, and a 24" scale for the Z axis. The 6 and 12 inch scales were trimmed to fit. The 24" scale had about .4" excess but was left untrimmed. I gave up about 3/4 inch of clearance between the tailstock and the saddle but have full travel in the X and Z axes as well as for the tailstock. The cover for the X axis scale extends .135" above the cross slide.

The scales are protected against swarf and lube splash by custom covers. The pickups are mounted from below on the X and Z axes to permit the use of the covers. The saddle was milled for the X and Z axis pickup mounts to provide a good vertical surface. the Z axis scale mounts were tapered about .65 degrees to match the casting draft on the lathe bed. Provision was made for cross slide gib adjustment although the scale would have to be removed for that. Since this is a fairly rare event, the partial tear-down is not oppressive.

The cross slide lock is accessible with a 10mm ignition wrench. The saddle lock and oil port are accessible.
As per Yuriy's design, an Arduino module with the prototype shield and Bluetooth module were used for the TouchDRO readout. Micro USB sockets are being used in the electronic design, which will allow the OEM displays to be used, if desired. Wiring was routed through 1/4" flexible stainless steel conduit. Because of this, it was necessary to cut the DRO wiring and splice it. Conduit terminations were clamped at either end with custom clamps.

Parts were laid out in SolidWorks and machined with my Tormach but there is nothing that can't be done with a conventional mill. aluminum was used for all parts except for the cross slide pickup mount where a .035 thickness dictated a piece of steel sheet metal and the cross slide scale cover which was made from .025" stainless steel, again because of clearance concerns. Inch socket head cap screws were used with the exception of the scale clamps and covers and for the 3mm flat head screws used for the pickup mounts.
SolidWorks models and drawings are available.Conduit Gang Clamp.JPG Conduit Routing.JPG Control Box.JPG Smartphone Readout.JPG Tailstock Conduit Clamp.JPG Tailstock Scale Mount.JPG X Axis Conduit Clamp.JPG X Axis Cover.JPG X Axis Scale.JPG Z Axis Conduit Clamp.JPG Z Axis Cover.JPG Z Axis Scale.JPG
 

davidh

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that looks great. good planing, good execution. .
 

RJSakowski

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Thanks for all your kind compliments. It was a fun project and hopefully a very useful one.
 

bpratl

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Great job...nice machining, layout and design. Bob
 

ch2co

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RJ
Very well executed, and worthy of my praise and copying. Very clean and much more stable than my old setup.
This is the best setup that I've seen so far. YES, I'd like to see copies of your SolidWorks drawings.
Thanks!

Chuck the grumpy old guy
 

brino

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Bob,

Beautiful install.
Thanks for the great pictures!

-brino
 

middle.road

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Nice, come on down and do that to my 1440 if you can.
I'm going to bookmark this and duplicate it on mine when I get a chance.
 

alloy

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Very nice. Thanks for posting it. You are giving me ideas for a DRO install on my "new to me" lathe.
 

MachGeek

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Beautiful job - I too would love to get those SolidWorks files. I am doing a similar build now and would love to look at your solutions in mor detail.
 

RJSakowski

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Beautiful job - I too would love to get those SolidWorks files. I am doing a similar build now and would love to look at your solutions in mor detail.
The files were posted in the Downloads section about a month ago.
 

MachGeek

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The files were posted in the Downloads section about a month ago.
Great - I am new to this forum and hunted about for a "Downloads" section. It is alas eluding me. Could you please point me in the right direction? Your help is much appreciated!!!
 

RJSakowski

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Great - I am new to this forum and hunted about for a "Downloads" section. It is alas eluding me. Could you please point me in the right direction? Your help is much appreciated!!!
It is the 5th tab in on the upper header strip at the top of the page.
Header Strip.JPG
 

MachGeek

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Hmmm, that is not the banner which I see on my iPad and the order is not the same on the existing options. I will look on another device/OS. I found a post from two years that talked about the Download item disappearing. Vexing...
 

great white

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Your post count may be too low right now. You have enough posts to have "active member" status or have made a donation to the site to have access to the downloads section.

Get a couple more posts on your count and it should show up in the top banner just after "notifications".

I'm not sure what the total count has to be off the top of my head...
 

ffmowers

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What did you use for the conduit? It should be obvious but I'm a little overwhelmed.. Starting this same project on my lathe..
 

RJSakowski

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ch2co

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RJ
Is this tubing oil tight, i.e. won't let oil get into the wiring, or is this a problem?

CHuck the grumpy old guy
 

RJSakowski

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RJ
Is this tubing oil tight, i.e. won't let oil get into the wiring, or is this a problem?

CHuck the grumpy old guy
No, it is not oil tight. I didn't think it would be a issue on my lathe as I don't use coolant and the cables are fairly well out of the way from stray oil. I used the same conduit on my Tormach homing mod where I do have coolant issues. There, I jacketed the conduit with oil resistant Tygon tubing purchased from McMaster. For terminations, I modified some brass compression fittings to make a liquid tight seal. This conduit is the same stuff they use in the DRO glass scales. I have had those scales in operation on my mill drill for eleven years without a problem.
 

ffmowers

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I was inspired by this project and finally started my installation. I've had the scales for a bit but have been scratching my head on how to mount them. I did get distracted installing the DRO on my mill but got that done a few days ago.

I work nights and stay up all night even on my days off; today was my day off. I headed out to the shop around midnight and fiddled a bit. I came up with what I think is a pretty simple solution for connecting the reader head to the carriage. Just a simple milled aluminum block and the hardware that came with the scales. I sort of borrowed from my experience with the Mill DRO and the FigNoggle plans. This doesn't allow for a chip cover, but I'll figure something out.

I'd upload a pic but they keep posting upside down.

Oh - and I did order some 1/4" steel conduit (I really liked that part of the design). I got way more than I need but 50' is on the way. I can always use it on the mill and other projects..
 
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ffmowers

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Finally got it to post right side up. Something to do with way the Ipad took the photo..

Reading Head Bracket View 3.JPG
 

FOMOGO

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Beautifully done. I've also filed it away for future use. Thanks, Mike
 

rwm

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Very nice! I need to do this with my new SB eventually. I like how you set this up and I will probably copy what you have done. Maybe you can help me through it when I get started.
R
 

RJSakowski

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Very nice! I need to do this with my new SB eventually. I like how you set this up and I will probably copy what you have done. Maybe you can help me through it when I get started.
R
Glad to help. You cam PM me with any questions. As you are laying things out, double check dimensions. There were some last minute changes that should have made it into the SolidWorks models but may not have.
 

ffmowers

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This project was truly an inspiration for me. I completed the Cross Slide DRO install today. I a little different bur I used what I had on hand.
Just waiting on the conduit and Touch DRO components to arrive!

Cross Slide View 1.JPG
 

ffmowers

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I downloaded the files; great job by the way! Do you happen to have a drawing of the cross slide mount? I'm looking for the measurements to the clearance holes and such. I know I can figure it out but I much prefer to stand on the work of others..
 

RJSakowski

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I downloaded the files; great job by the way! Do you happen to have a drawing of the cross slide mount? I'm looking for the measurements to the clearance holes and such. I know I can figure it out but I much prefer to stand on the work of others..
There may not have been drawings made as some parts went into the CAM program and exited as G-code. Let me know which parts/areas you are interested in and I will find or create a drawing. You cam PM me if you wish with e-mail address and I can send SolidWorks drawings or I can save as jpg files.
 

coherent

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I know this thread is a bit old, but just wanted to say thanks. I finally got around to ordering some of the igaging DRO's for my G0602 and I'm sure this will help with the mounting!
 
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