Thanks Hood
Since I posted the question I found a calculation spreedsheet on this side and it stats that I had a right calc.
See below. (I do not know how to insert a file to this page).
I do not remember how much of but it was quit a bit - something like in the x direction 5mm instead of 10 and in z 30 instad of 10.
Of to bed now,- check it to morrow
Metric
Required inputs
Stepper Motor Deg/step - 1,8
Steps/rev - 200
Micro Stepping Pulse/step - 8
Pulse/rev - 1600
Gear Reduction Stepper teeth - 12
(Enter zeros for Lead screw teeth - 24
direct drive) Multiplier - 2
Leadscrew Pitch (mm) - 3,18
Thread starts - 1
Lead (mm/rev) - 3,18
Result *Steps per mm - 1007,87
Resolution (mm/step) - 0,000992
Input: Result:
Feed - mm/min 2500 pulse/sec = 41994,75
mm/sec = 41,67
stepper rpm = 1574,8
Stepper RPM 500 mm/min = 793,75
mm/sec = 13,23
pulse/sec = 13333,33
Pulse/sec 13333,33 stepper rpm = 500
mm/min = 793,75
mm/sec = 13,23
Distance vs. 3200 steps = 3,175 mm
Steps 1 mm = 1007,874016 steps