Servo Driven 4th Axis for CNC Mill

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awemawson:
All I had to do was mill a matching 3/16" slot on the other side and I could assemble the bits the other way round !

Manxmodder:
Hi Andrew, the plastic knob is is very likely to be made of a glass filled plastic as many structural plastic components are(PA 66 maybe?).

It is very abrasive and dulls most tooling very efficiently....OZ.

dsquire:

--- Quote from: awemawson on March 16, 2014, 12:51:51 PM ---As far as I know I've never set anything up for longtitude on the forum other than put the country as UK. I've just had a poke around my profile and found a setting to have an offset from 'forum time' with :D :Dan auto-detect feature that says it is to display local time. Clicking this gave a four hour offset so maybe this post will bear UK time.

Later edit - Nope shows 4 am ish !!!!! unless the 24 hour clock is wrongly implemented and it means 16:00, but it shows as 04:.. which is early hours in the dark even though it SAYS PM !

--- End quote ---

Andrew

Local Time:March 18, 2014, 05:57:21 PM (copied from your profile)
Local Time:March 18, 2014, 01:58:21 PM (copied from my profile)

Note the difference of 4 hours between your profile and mine. If you right click on my profile and compare it to yours you will see that there is a four hour difference which will be the reverse of that shown above.

Hope this helps Andrew, now back to those servo drives and sheep and whatever else may come your way. I know all about this retirement thing. I don't know how I ever had time to work. :D :D

Cheers :beer:

Don

Hazel:
Hi Andrew,
I am very impressed with your 4th axis upgrade. I know this is an old thread, but I am about to do something quite similar. I have the choke, the servo card and a J&S 4th axis. Before I start putting all the bits inside my BP Interact 1Mk2 I thought I'd try to get the encoder at least working first . I can get the IVth axis to display on the TNC151, and I can tell it to display encoder outputs for inhibited axes, but my spare working encoder does not work in the 4th axis. It works if I swap it into the X encoder plug if the X axis is inhibited. Is there a set of Machine Parameters someplace that I can set to check the IV axis encoder? Currently using MP72=9, MP75=0, MP76=1. Not really sure what I am doing to be honest.

Regards, Hazel

awemawson:
Hazel,

I'll pop over to the workshop later tonight and see how those parameters correspond with mine

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