Retrofitting a 1986 Maho MH400E

Hanmon
As I remember ? The Lub pump cycled at machine start-up and cycled after some time ( amount of movement ) period t , but also cycled due to the axis movements being short in length.
Zeeson Muhr ( Sp ? ) converted his Mikron mill and wrote a program for lubrication cycle timing
I saw the program in the Wicki or somewhere else in the .Linux CNC site.
If you can't find It ----let me know and will try to stumble across it again.

Bob

Hanmon
It is written by Zeeshan Munir

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Located in" Linux CNC Documentation" under Centralized Lubricator .
Hope this helps

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but not sure if it has the extra cycling part that Philips did for many short moves.
Bob

Hi,
thx a lot !
I took a short look at the code.
It seems to build up pressure for 10s and if there is no fault, low fluid level or pressure loss, it keeps running for 50s more to then idle for 12min.
This cycle starts every time when machine is on an the spindle is running.
I will take it as is and eventually modify it later.

Hanno

Hi Hanno,

Good progress, but remember, photos or it didn't happen

I'll post that clover leaf program later.

If you work in the garage at 2°C you are a tougher breed than me.

I also used that same PID tuning procedure and found it very helpful. I think I'll have to retune Y once the replacement exe is wired up, as I never got a good tune, and the axis drift was probably a factor there.

We had a discussion about the lube system at some time. I thought in here. My one has the automatic pump. It runs for something like 30 sec at start up, and then again every 20 minutes.
Mark

Here is the code which draws a cloverleaf each 15 minutes.

Mark I remember when Zeeshan converted his Mikron (about size of a MH500e) a discussion that the Maho also had a extra Lubrication cycle for short an small moves . Think I saw it in some of the Philips 432 machine parameters .
Are you getting another EXE board ? Or what is the latests in the Y axis problem.
Could be very interesting to compare the PID values you and Hanmon use for the initial servo tune.
It will not be very much time before you an Hanmon have initial conversion done and can start on the fine tuning part.

Stay warm
Bob