How to improve Mach3 accuracy
MACH3 parameter setting
1.Processing mode
In MACH3 General Logic Configuration (Config-> General Config ...). Settings-> General Settings.
There is MACH3 processing mode selection.
2.CV control
CV control is very important. When the CV angle is too large, such as 180 degrees, the square corner will be cut into round corners. So when the square corner is cut into a circle, set the CV angle to 6-12 degrees. This will control the MACH3 to automatically decelerate when it is greater than 6 degrees to ensure square corner processing.
But usually this value is set to 90 degrees. The corners are controlled together by the CV distance.
3. Look ahead
Usually set to 200. The maximum is 1000. If it is too less to judge the shape.
4. Kernel speed
In config → Ports and Pins. This speed should be consistent with the maximum HZ speed set by the motor. For example the motor speed is 6000 and the pulse is 200.
6000÷60×200＝20000 Hz/s
So we select 25000 is enough.
5. Acceleration
In config → Motor Tuning
ACC= Velocity÷20
For servo motors, it can be increased by *3 times
Proper acceleration keeps the machine running smoothly.
