Mapping X/Y G-code to cylinder on A-Axis
This is useful if you have a 4th axis and want to mill on the outside of a cylinder as if it were the X-Y plane. You must have set up the A axis as “4THMILL”. This is possible with a normal XY G-Code file. EdingCNC will perform the mapping for you. Some calibration needs to be done to make this work. It is done on the coordinates page. The location of the A-axis rotation point needs to be set and also the radius of the workpiece needs to be set first.
First we set the location of the A rotation point:
We move by jogging or MDI to the center point of rotation of the A axis, only Z and Y are important here. Press button "1. Set to current position". Done, center is set.
Next, we set the outside radius of the workpiece:
There are 2 possibilities to do this:
1. Just type the radius if you know it and press "Set Radius"
2. We move the Z up touch the outside of the material with the tool bit and press "2. Calibrate Radius".
Calibration is done. First, we need to be sure that our Y axis is at the correct position before we switch on the Y->A mapping. We need to do this now because when the mapping is ON, Y can no longer be moved, as Y is now mapped to A. You can press "Move Y to rotation point” to do the movement.
The mapping can be switched on now. Then we can load a standard G-Code file with XYZ coordinates. Below we see how it looks in the graphic.
Position the X and the Z at the zero point of the drawing, so where the milling should start.
Now Zero all axes in the Operate screen
Important: Zero the Z at the top surface of the cylindric material, in this case, the material has a radius of 20 mm, so the Z zero is 20 mm higher than the CenterPoint.
Y to A mapping OFF
//IMAGE of flat picture....
Y to A mapping ON