M-DRO 2-axis mill console functions

[Chris GillParticipant @chrisgill22114]

[Chris GillParticipant @chrisgill22114]

Hi all

I installed a 2-axis MDRO unit on my mill recently and it made a big difference to my work. Unfortunately, I found that the user manual is incomplete when it comes to machining an arc in the vertical plane.

After a lot of messing around I figured out how to do it. I also discovered that the default Y-axis direction means things don't work as per the book so I changed it to 1. I also found that the XZ options isn't available on this model of DRO.

If anyone is using this DRO and wants to machine vertical arcs I've created a 2-page addendum that might help. However, as I can't upload DOCX or even PDF, I've converted it into two JPG files below.

Let me know if there are any cases of muddled fingers (or if I've completely lost the plot)

Chris

[Brian HParticipant @brianh50089]

Many thanks for that Chris, I haven't had a close look but I'm sure it will be useful.

Brian

[Mike DonnerstagParticipant @mikedonnerstag]

I have the 3-axis Easson DRO kit fitted to my Sieg SX3 and have been trying to interpret the dreadful English translation in the manual. I too have been experimenting with milling a radius (or 'arc function' ) in the vertical plane. I am wondering what limitations the DRO has in this respect. Specifically, is it limited to a quarter circle?

For example, would it be possible to mill a radius into the top surface of some material, as in the example below:

If anyone has done this using a DRO arc/radius function, I'd be interested to know.

Edited By Mike Donnerstag on 27/04/2020 11:40:49

[Mike DonnerstagParticipant @mikedonnerstag]

Further to my previous post, if anyone has done any arc/radius milling in the XZ or YZ plane using an Easson ES-12 DRO with scales fitted to all three axes, I'd be very interested in their experience.

[JasonBModerator @jasonb]

Mike I have the Sino one from M-dro and did some half rounds with no problem. Even if you can only do 1/4 circles it should be easy enough to just select one side and then the other using the same zero down the middle of the job

 

Edited By JasonB on 04/05/2020 17:16:40

[Henry BrownParticipant @henrybrown95529]

Thanks Chris, printed off and now in the folder with the manual for future reference…

[Mike DonnerstagParticipant @mikedonnerstag]

JasonB: I just downloaded the Sino manual and the parameters are:

1. Processing plane (XY, XZ or YZ)
2. Centre coordinates
3. Radius
4. Tool diameter
5. Maximum cut
6. Start angle
7. End angle
8. Tool diameter modification (inside/outside arc)

This makes far more sense to me than my Easson, which substitutes the Start and End Angle parameters (6 and 7 above) for the Start and End Coordinates. This makes it difficult if not impossible to program an arc of something other than 90deg. Also, it seems to get confused when I try to program a 180deg arc in the XZ or YZ planes, though of course this can be done in two steps with opposing 90deg arcs.

I was hoping for something more intuitive and dynamic from a DRO with a graphical display that wasn't cheap! I'm also amazed by the poor quality translation in the manual. For example, the manual states an advantage of the R Function is that it 'can machine virtually all kind of ARC, even the intersected ARCs', however the Simplified R function's disadvantage is that it 'cannot machine more complicated ARC such as interested ARC and etc.'. Perhaps someone could help with a translation from Chenglish to English?

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