Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: v tec on January 07, 2012, 03:40:37 PM

hi from france
i want create a arm robot, and work with mach3
but what mach3 choose for 5 axis?
i want use the program for exprim the angle and not the "position"
exemple
g1 x10 y20 z30
x=10°
y=20°
z=30°
but the french patch can t work, and my english is so so
someone can help me on msn, for start to pilot and calibrate my stepper engine
thanks

1 step=1.8°
if my gcode is for exemple
x 1.8 y18 z36
how to mach3 know that 1.8°= for exemple 10mm on the X axis
thanks

1 revolution would be 360 degrees so if you work out how many steps it takes to move 1 revolution then divide by 360 that will give you the steps per unit and 1 unit will equal 1 degree.
As an example if you had a stepper motor with 1.8 degree steps then that is 200 per revolution, if your drives are 10 microsteps then that would be 200 x 10 =2,000 steps per rev so 2000/360 = 5.5555555555556 steps per degree.
Hood

for my project
stepper motor have 200 step, each step=1.8°
but i dont know where write when x=1.8, the information is 1step
and on the screen i see the xyz axis
but how to see the ABC axis?
i have try a gcode, with ABC position, but not work
i don t understand
someone can help me a little moment on msn, or aim?

You would do that in Motor tuning, you could just use X Y Z or you could change the screen by using one of the screen designers so that the X Y Z show A B C.
One thing however is Mach does not do kinematics so you would have to programme each movement.
Hood

for the program it s not a problem
i can write each rotation for each stepper= movement
but after i need to define, what is the g0 speed and the g1 speed