whats the matter!

[ptjw7uk]

Well nothing really just that I have just come to the decision that there is no REAL information available for stepper motors and their use.
I had thought that when converting my X1 mill to cnc I had gleaned all the information that was on offer. In selecting the steppers I went with 1.8Nm from ArcEuro as this seemed to be about right( obviously wrong as Zaxis is to weak). I then decided to fit ball screws to try and get better efficiency but completely forget that the pitch was a lot higher that the original screws and therefore making the motors appear weaker. I am in the process of fiting a 3Ncm motor to the z-axis, in so doing I noticed the torque curves for the motor and was amazed at just how weak it was in parallel against series connection.
In hind sight I should have waited and bought a ready made KX1 and saved the headaches.

I have still to try a head counter weight or spring. So I am left wondering why the only info we normally hacve on steppers is their holding torgue wherease we relay need their stepping torque so as to compare them.

I am surprised that anything works at all perhaps its all down to gearing.

The one thing I have learnt is that you never can have enough tooling.

Peter