Schaublin 125-CNC retrofit.

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12 Mar 2021 14:48 - 12 Mar 2021 14:48 #201971 by Muzzer
Replied by Muzzer on topic Schaublin 125-CNC retrofit.
I also have Lichuan A4. I am using step / dir, as I prefer to stay in the digital domain, although they seem to support +/-10V.

The Lichuan B2 appears to support analogue input, too. Would be surprising if they didn't. Are you sure they don't?
servo.xlichuan.com/ProductsStd_207.html
Last edit: 12 Mar 2021 14:48 by Muzzer. Reason: typo

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13 Mar 2021 08:48 #202073 by tecno
Replied by tecno on topic Schaublin 125-CNC retrofit.
Yes I am absolutely sure.

Analog is usually +/-10V but B2 is 0-10 + switch to change direction = not fast enough.

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13 Mar 2021 10:25 #202080 by Muzzer
Replied by Muzzer on topic Schaublin 125-CNC retrofit.
That's annoying. I'm glad I didn't go the analogue route. It has to be said, the Lichuans are thin on features compared to the likes of Yaskawa etc and the setup "software" is little more than a parameter table you can configure offline and upload.

As modern drives and controllers are both inherently digital, what is the benefit of going analogue +/-10V? The signals are being converted from digital to analogue at the controller, then back to digital at the servo drives, with the opportunity for noise, delays (filters etc) and offsets along the way.

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14 Mar 2021 11:00 #202204 by RotarySMP
The guys answered my similar question on Analog v Step/Dir a few pages back.
forum.linuxcnc.org/26-turning/41498-scha...ofit?start=40#200693

The cutting oil used has hardened to a varnish, and glues the ways down pretty well. I am having to break it down further than I hoped, but am very happy with yhat I am finding so far.


Mark
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21 Mar 2021 13:03 #203114 by RotarySMP
Pulled off the saddle this week.
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21 Mar 2021 16:00 #203125 by arvidb
Replied by arvidb on topic Schaublin 125-CNC retrofit.
Such a beautiful machine! After goofing around with one of those chinese mini lathes one can really appreciate the quality of this Schaublin.
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21 Mar 2021 16:19 #203126 by RotarySMP
It really is nicely made. Especially the castings. I think I might do some special coverage of Schaublin castings.

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21 Mar 2021 16:45 #203133 by db1981
Replied by db1981 on topic Schaublin 125-CNC retrofit.
contraves(csr) is still alive, this was one of germanys top servo controller and motors company in the 80/90.
The old workmen founded a new company.

www.contraves-drives.com/D/index.php

maybe they can give you informations about the motors
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28 Mar 2021 11:24 - 28 Mar 2021 11:24 #203885 by RotarySMP


Here is this weeks update.
Mark
Last edit: 28 Mar 2021 11:24 by RotarySMP.
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28 Mar 2021 23:35 #203963 by andypugh
Is that a D1-4 nose? (Or D1-3?).

I am putting in an order at the iron foundry for the body casting for this

a360.co/3fjEnJs

A mill-table or rotary-table adaptor mount for D1-4 lathe chucks. I have made the central bore small enough that machining for D1-3 is possible too.

I have a couple of orders from the Holbrook list. I expect the raw casting to be about £35 based on previous experience with the foundry.

Any takers?
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