Machsupport Forum
G-Code, CAD, and CAM => G-Code, CAD, and CAM discussions => Topic started by: Rimmel on January 25, 2014, 12:12:24 PM
-
I have been searching for a while on how to calculate and angle in g-code.
e.g.
Stock - 50 diameter
I want to cut a a 45 degree angle
(http://www.freerabbitcontrol.co.uk/images/angle.jpg)
The mach3 wizards with cut a taper but the g-code overshoots the end. So if I put a x as 10 and z as 0 the the code will go to -9.5 (example), this is OK if it's an end angle but not if it's like the picture.
Questions:
I've seen a couple of wizards that ask for angle and then start z and end z. Isn't the z end redundant? e.g if i wanted a angle from x=0 z=0 @45 degrees to a stock diameter of 30mm then put in a z end of 500mm the angle using the z end would not be 45 degrees. I would have thought it would be either an angle or point to point and you get what angle comes out.
Anyway I would like the formulas for working this out myself - arc formulas would be nice as well.
thanks
-
Rimmel,
Do an internet search "Right Triangle Formulas"
Similar for arc's
You'll definately find something that suites your math understanding.
RICH
-
If you are working in diameter mode then the code is simply move to start diameter and Z start e.g. X30. Z2., feed in 10mm G01 Z-10. F.1 then form a 10*45 deg chamfer X50. Z-20. this may be a big chamfer to cut in 1 go but that's the code to do it. so for 45 degree chamfer move twice the x for the z e.g. a z move of 2 will need and x move of 4.
G00 X30. Z2. G97 S1000 M3
G01 Z-10. F.1
X50. Z-20.
X52.
G00 Z2.
M30
For a 30 degree chamfer the x and z are the same e.g. x2. z-2. will create a 30 degree chamfer.