4axis xyuv constant velocity

luckym wrote:

Does this mean that the longer move will move at feed rate and the shorter one at lower speed regardless of which side move longer xy or uv?
So is there any setting that say these axis are in pair: xy and uv? because I can wire the axis such: xu an yv. and linux cnc don't know which axis are in pair.

I tried this code in mach with the results of xy side speed:

g00 x0 y0 a0 b0

f1000
1 g01 x50 y50 u20 v20
2 g01 x100 y100 //xy speed increased
3 g01 x150 y150 u70 v70 //xy speed decreased
4 g01 x200 y200 u250 v250 //xy speed decreased

If you notice the travel of xy side is the same in each movement (delta is 50), uv travel changes (delta is 1:20 2:0 3:50 4:180)

According You linuxcnc should perform movement 1 2 3 at constant speed of xy side at defined feed (uv side has shorter movement)
in movement 4 xy decrease speed and uv move at defined feed.